Product - Ruitailianxin https://www.lxrefra.com/product/ Refractory bricks, fire bricks, magnesia chrome bricks, high alumina bricks, refractory material supplier Tue, 21 Jul 2026 08:52:00 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.11 https://www.lxrefra.com/wp-content/uploads/2025/04/cropped-4443161fbf9c19781f72639f228a8d1-32x32.png Product - Ruitailianxin https://www.lxrefra.com/product/ 32 32 Lightweight Ultra-Low Conductivity Mullite Brick https://www.lxrefra.com/product/lightweight-ultra-low-conductivity-mullite-brick/ Fri, 12 Jun 2026 03:12:15 +0000 https://www.lxrefra.com/?post_type=product&p=6417 Lightweight ultra-low conductivity mullite bricks are a type of high-strength, low-thermal-conductivity refractory material. While retaining the advantages of traditional mullite bricks, such as high-temperature resistance and corrosion resistance, they achieve lightweight and energy efficiency through a large number of uniformly distributed micropores, making them an ideal choice for high-efficiency industrial furnaces.

Typically, they contain 65%-75% Al₂O₃, with a bulk density between 0.6-1.75 g/cm³, far lower than dense refractory bricks. Their refractoriness can reach over 1790℃.

Lightweight Ultra-Low Conductivity Mullite Brick最先出现在Ruitailianxin。

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Lightweight Ultra-Low Conductivity Mullite Fire Brick

Lightweight ultra-low conductivity mullite fire bricks are a type of high-strength, low-thermal-conductivity refractory material. While retaining the advantages of traditional mullite bricks, such as high-temperature resistance and corrosion resistance, they achieve lightweight and energy efficiency through a large number of uniformly distributed micropores, making them an ideal choice for high-efficiency industrial furnaces.

Characteristics of Lightweight Ultra-Low Conductivity Mullite Bricks

Energy saving and consumption reduction

Low thermal conductivity (approximately 0.25-0.53 W/m·K at 1000℃), significantly reducing furnace heat dissipation and heat storage, and accelerating heating and cooling rates.

Low creep rate at high temperatures, good thermal shock resistance, can directly contact the flame, and is resistant to acid and alkali corrosion.

Weight can be 10%-20% lighter than traditional refractory materials, effectively reducing the load on the kiln’s steel structure.

Mostly machine-pressed, ensuring precise dimensions, accelerating construction speed and guaranteeing masonry quality.

Application of Lightweight Ultra-Low Conductivity Mullite Refractory Bricks

Hot-face lining: Serving as the working layer of a kiln, directly in contact with the flame, used in ceramic roller kilns, tunnel kilns, shuttle kilns, etc.

Backing insulation: Serving as an insulation layer behind high-temperature heavy bricks, used in hot blast stoves, petrochemical cracking furnaces, etc.

Specialty applications: Lightweight ultra-low conductivity mullite bricks are widely used in critical components such as glass crucibles, non-ferrous metal furnaces, and transition zones (using composite structures) in cement kilns.

Lightweight Ultra-Low Conductivity Mullite Brick Technical Parameters

Item Lightweight Ultra-Low Conductivity Mullite Brick Type I Lightweight Ultra-Low Conductivity Mullite Brick Type II
Bulk Density (g/cm2) ≤2.5 ≤2.3
Compressive Strength at Room Temperature (MPa) 60 55
Softening Temperature under Load (T0.6, °C) 1500 1430
Thermal Shock Stability (1100°C water cooling, cycles) 9 8
Thermal Conductivity (1000°C, W/m.k) 1.5 1.4
Apparent Porosity (%) 19 17

Compared to Ordinary Lightweight Mullite Bricks

The ultra-low conductivity version has 30%~50% lower thermal conductivity across the entire temperature range, with an even greater difference in high-temperature insulation;

0.05~0.15g/cm³ lower density for the same grade, resulting in a lighter overall furnace lining;

15%~28% energy savings for intermittent kilns, and over 20% reduction in heat loss for continuous kilns;

Slightly higher unit price than ordinary JM bricks, but significantly reduced long-term fuel consumption, allowing the material price difference to be recovered within 1~2 years;

Ordinary lightweight bricks are used in conventional kilns; the ultra-low conductivity version is suitable for high-end precision projects, projects requiring frequent temperature increases and decreases, and projects with stringent energy-saving retrofitting requirements.

Lightweight Ultra-Low Conductivity Mullite Bricks Price

Our wholesale pricing for refractory bricks is flexible and subject to adjustment based on various factors, including order quantity, product specifications (dimensions and shape), refractory grade (standard, medium, or high-grade), and delivery terms. For custom lightweight ultra-low conductivity mullite bricks—specifically those with non-standard specifications or specialized refractory grades—pricing will be negotiated based on raw material costs, production complexity, and order volume.

As a reliable refractory bricks supplier, we are committed to providing you with the most competitive quotes; we will furnish a detailed quotation tailored to your specific order requirements, thereby assisting you in effectively managing your procurement costs.

Ruitai Lianxin lightweight mullite brick
Ruitai Lianxin lightweight mullite fire brick
Ruitai Lianxin lightweight mullite fire bricks
Ruitai Lianxin lightweight mullite firebrick
Ruitai Lianxin- lightweight mullite firebrick
Ruitai Lianxin lightweight mullite refractory bricks
Ruitai Lianxin lightweight mullite refractory bricks

Ruitai Lianxin Refractory Brick Manufacturing Process

Ruitai Lianxin refractory brick manufacturer consistently adheres to rigorous, standardized production processes to ensure that every refractory brick possesses consistent quality and reliable performance.

Manufacturing Process of Lianxin Refractory Brick

Why Choose Ruitai Lianxin Lightweight Ultra-Low Conductivity Mullite Bricks

Ruitai Lianxin is a leading refractory bricks manufacturer, operating its own dedicated facility and committed to providing global customers with factory-direct refractory bricks and high-quality wholesale services.

Industrial Refractory Bricks Wholesale

Factory-Direct Supply

As a direct-operated refractory brick manufacturer, we wholesale lightweight ultra-low conductivity mullite bricks and various other refractory bricks at direct-from-factory prices, drastically reducing your overall procurement costs.

Premium Refractory Materials

Rigorous Quality Control

Through our comprehensive quality inspection system, we oversee everything from raw material selection to final dispatch, ensuring your lightweight ultra-low conductivity mullite fire bricks meet international standards.

Refractory Solutions

Customized Furnace Solutions

The geometric structures and heat loss zones of different kilns vary widely. In addition to supplying standard bricks, we can directly manufacture a wide range of custom-shaped refractory bricks based on your engineering CAD drawings.

Direct Refractory Factory

Extensive Export Experience

With twenty years’ experience in the export of refractory products, we expertly manage customs clearance procedures, providing one-stop logistics services within 15-30 working days.

Ruitai Lianxin Refractory Brick Customer Case

Ruitai Lianxin focus on exporting high-standard refractory bricks and providing factory-direct refractory bricks to industrial clients worldwide. Our products and customized refractory fire brick solutions are widely praised globally, and we have stable, long-term partners in many countries,including Uzbekistan, Syria, and Pakistan. Ruitai Lianxin will continue to pursue mutual benefit and win-win results through in-depth cooperation with global refractory brick customers.

Ruitai Lianxin Syrian customers

Syria | Refractory Cement | Blast Furnace Refractory Materials

refractory brick India customers

Indian Customers | Refractory Brick Quality Check

fire bricks Vietnamese customers

Vietnamese Customers | Irregularly Shaped Refractory Bricks | Kiln Lining

Egyptian customer

Egypt | Sintered Zirconia Corundum Brick | Glass Furnace

lianxin shipping

Indian | High Alumina Fire Brick | Ladle Refractory Fire Bricks

refractory manufacturers in china

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Contact us

As a professional refractory brick manufacturer, supplier, and factory, we offer high-quality factory-direct refractory bricks and wholesale services, and can customize kiln solutions to meet your needs. Contact us now, and our team will reach out to you as soon as possible to provide you with the best factory quote.

Lightweight Ultra-Low Conductivity Mullite Brick最先出现在Ruitailianxin。

]]> Glass Melting Furnace https://www.lxrefra.com/product/glass-melting-furnace/ Fri, 23 Jan 2026 09:32:21 +0000 https://www.lxrefra.com/?post_type=product&p=5575 A glass melting furnace is a specialized, high-temperature vessel (1500-1700°C) that transforms raw materials like sand, soda ash, and cullet into molten glass, crucial for industries requiring consistent glass quality, operating continuously with refractory linings to withstand corrosive molten glass.

Glass melting furnaces use various energy sources (fossil fuels, electricity, or both) and come in different designs (tank, pot) for mass production (bottles, flat glass) or specialized items, featuring melting, refining, and working sections for different stages of glass processing.

Glass Melting Furnace最先出现在Ruitailianxin。

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Structural Components of Glass Melting Furnace

 Refractory Lining

Made of specialized ceramic bricks (like fireclay) to contain the extreme heat and molten glass.

A system introduces batch materials (silica sand, soda ash, cullet) into the furnace.

Can be gas-fired (oxyfuel or air-fuel), electric, or hybrid, heating the glass from above.

Chemical reactions and bubble removal occur as materials melt, requiring precise temperature and flow control for quality.

Molten glass flows to shaping machines, while different designs (pot furnaces for small batches, tank furnaces for mass production) serve different needs. 

structure of glass melting furnace

Characteristics of Glass Melting Furnace

High Temperatures: Essential for melting and ensuring glass quality.

Refractory Materials: Withstand extreme heat and chemical corrosion.

Precision Control: Critical for uniform melts, affecting final product properties.

Continuous Operation: Large furnaces run 24/7 for industrial scale. 

glass melting furnaces
ruitai glass melting furnaces
RTLX glass melting furnace
RT glass melting furnace
ruitailianxin glass melting furnace
ruitai glass melting furnace
LX glass melting furnace
ruitailianxin glass melting furnaces
lianxin glass melting furnace
lianxin glass melting furnaces

Applications of Glass Melting Furnace

Containers: Bottles, jars.

Flat Glass: Windows, automotive glass.

Technical Glass: Specialty products. 

Tableware & Art Glass: From machine-made to artisanal.

Classification of Glass Melting Furnace

A crucible furnace melts the raw materials in a crucible made of refractory material. It offers high flexibility and is suitable for small-batch, multi-variety specialty glass production.

A tank furnace, on the other hand, uses a refractory-lined melting pool into which the raw materials are directly added for melting. This is currently the mainstream form, particularly suitable for large-scale continuous production.

Refractory Bricks for Glass Melting Furnace

The working environment varies in different parts of a glass melting furnace, and the performance requirements for refractory bricks also differ. Below is an introduction to commonly used refractory bricks for each part:

refractory bricks of furnace
Pool Roof

The temperature at the top of the melting and cooling sections of a glass melting furnace often reaches 1600℃. It must withstand high temperatures, heavy loads, and the erosion from alkaline vapors and batch materials. High-quality, high-purity silica bricks are the first choice.

In the melting and cooling sections, the parts of the pool walls in contact with the molten glass commonly use fused zirconia-corundum bricks. For the breast walls not in contact with the molten glass, corundum bricks or silica bricks can be used.

The bottom of the pool must withstand the static pressure and chemical corrosion of the high-temperature molten glass. Fused zirconia-corundum bricks and chrome-zirconia bricks are commonly used. Dense clay bricks can be used for auxiliary parts.

Silica bricks are generally used for the top and side walls of the regenerator chamber. High-alumina bricks and low-porosity clay bricks can be used for the middle section side walls, and low-porosity clay bricks are used for the lower section. The top of the lattice has the highest temperature, and fused magnesia bricks are generally used. The upper part, with a temperature of 1100-1400℃, can also use fused magnesia bricks. The middle part, with a temperature of 800-1100℃, is best suited for directly bonded magnesia-chrome bricks, magnesia-alumina spinel bricks, magnesia-olivine bricks, and magnesia-zirconium bricks. The lower part, with its lower operating temperature, higher load, and less alkali corrosion, generally uses low-porosity clay bricks.

L-shaped hanging walls and necks typically use silica bricks.

Corundum bricks are typically used in areas directly in contact with molten glass, while silica bricks or corundum bricks are used in areas not in contact with molten glass.

The furnace door and front wall need to withstand significant mechanical impact and thermal load, and high-alumina bricks or corundum bricks are commonly used.

Sintered Zirconium Corundum Brick

fused zirconia-corundum bricks

silica brick

silica brick

corundum mullite brick

corundum brick

Magnesia brick

magnesia brick

Ruitai Lianxin Customer Case

Egyptian customer

Egypt | Sintered Zirconia Corundum Brick | Glass Furnace

refractory brick India customers

Indian Customers | Refractory Brick Quality Check

fire bricks Vietnamese customers

Vietnamese Customers | Irregularly Shaped Refractory Bricks | Kiln Lining

Ruitai Lianxin Syrian customers

Syria | Refractory Cement | Blast Furnace Refractory Materials

Direct Refractory Factory

Indian | High Alumina Fire Brick | Ladle Refractory Fire Bricks

fire brick manufacturers near me

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Contact Us

Glass Melting Furnace最先出现在Ruitailianxin。

]]> Oxygen-enriched Side-blown Furnace https://www.lxrefra.com/product/oxygen-enriched-side-blown-furnace/ Thu, 27 Nov 2025 06:47:38 +0000 https://www.lxrefra.com/?post_type=product&p=5195 An oxygen-enriched side-blown furnace (OESBF) is an industrial metallurgical furnace that enhances smelting and refining processes by injecting oxygen-enriched air horizontally into a molten bath through side nozzles (tuyeres). This process increases combustion efficiency, higher temperatures, and faster reaction times compared to traditional methods.

The technique is widely used in smelting non-ferrous metals like copper, lead, and nickel from concentrates or secondary materials like e-waste.

Oxygen-enriched Side-blown Furnace最先出现在Ruitailianxin。

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Structural Components of Oxygen-enriched Side-blown Furnace

Furnace Body/Shell

The main, often cylindrical, structure that contains the smelting process.

High-conductivity copper or steel water jackets often make up the walls and shaft of the furnace.

A protective lining of fire bricks or similar materials is used, especially in the hearth area.

Multiple nozzles are positioned along the sides of the furnace, typically arranged in layers, to inject high-purity, oxygen-enriched air horizontally into the molten bath.

The bottom part of the furnace where the molten metal (matte/bullion) and slag layers separate due to density differences.

An inlet, usually located on the top or side of the furnace, where raw materials (concentrates, fluxes, reductants) are continuously fed.

Metal Outlet: A lower tap-hole or siphon is used for continuously or intermittently drawing off the dense molten metal (e.g., lead bullion, copper matte) that settles at the bottom.

Slag Outlet: A separate tap-hole at a higher elevation is used to remove the less dense molten slag that floats on top.

A crucial exhaust system located on the furnace roof.

Structural Components

Operating Principle of Oxygen-enriched Side-blown Furnace

The core principle involves vigorous stirring and efficient combustion within a molten bath. 

Oxygen Enrichment: Air with a high concentration of oxygen (up to or exceeding 70%) is used instead of normal air. This increases combustion efficiency, rapidly raises the internal temperature, and accelerates reaction times.

Side Blowing: The oxygen-enriched air is injected horizontally through tuyeres positioned on the sides of the furnace, below the surface of the molten material. This creates intense agitation and ensures thorough mixing of gases with the molten metal and slag, promoting uniform and complete chemical reactions.

Reactions: The injected oxygen reacts with impurities (e.g., sulfur and carbon) and fuel, forming oxides that are removed as slag or exit as high-concentration SO2 off-gas, suitable for acid production.

Phase Separation: The process allows for quick separation into distinct layers: dense molten metal/matte settles at the bottom and a less dense slag layer floats above it. These are then tapped separately from different elevations. 

Oxygen-enriched side-blown furnaces

Characteristics of Oxygen-enriched Side-blown Furnace

High Efficiency and Productivity: The enhanced combustion leads to faster reaction rates and higher throughput, significantly reducing the time required for smelting and refining processes.

Energy Savings: Improved thermal efficiency reduces overall fuel consumption required to reach desired temperatures, lowering operational costs and energy consumption.

Environmental Performance: The process minimizes fugitive emissions due to enclosed design and effectively captures high-concentration SO2 off-gas for further use (e.g., in sulfuric acid plants). Full combustion of off-gases helps reduce pollutants like dioxins and carbon monoxide.

Flexibility and Control: The furnace can process a wide variety of raw materials, including concentrates, scrap, and residues with varying moisture content. Operators have precise control over oxygen levels and injection rates to optimize performance for different materials.

High Metal Recovery: The intense mixing and efficient reactions result in better impurity removal and high recovery rates of valuable metals like copper, lead, nickel, and zinc. 

lianxin Oxygen-enriched side-blown furnace
LX Oxygen-enriched side-blown furnace
RTLX Oxygen-enriched side-blown furnace
ruitai Oxygen-enriched side-blown furnace
RT Oxygen-enriched side-blown furnace
ruitailianxin Oxygen-enriched side-blown furnace

Application of Oxygen-enriched Side-blown Furnace

Oxygen-enriched side-blown furnace technology is widely applied in the non-ferrous metallurgical industry: 

Copper Smelting and Refining: Used for producing high-purity copper from various copper ores and electronic waste.

Lead and Nickel Production: Efficient for the primary production and recycling of lead (e.g., from lead-acid batteries) and nickel.

Secondary Metal Processing: Suitable for processing a wide range of secondary and recycled materials due to its flexibility.

Zinc Leaching Residue Treatment: Has proven effective in treating zinc-containing residues, achieving high recovery rates for valuable metals. 

Classification of Oxygen-enriched Side-blown Furnace

The furnace body is stationary, and this is currently the mainstream furnace type. It has a rectangular, vertical structure, with oxygen-enriched air and fuel injected into the molten pool through tuyeres on both sides of the furnace body.

The furnace body can rotate around a horizontal axis, allowing for adjustment of the tuyeres’ position and improvement of the furnace lining’s lifespan.

Refractory Bricks for Oxygen-enriched Side-blown Furnace

The selection of refractory bricks for the core structure of an oxygen-enriched side-blown furnace is primarily based on the temperature, melt erosion intensity, and scouring degree of each location, as follows:

Heart (including copper tapping and slag tapping areas): Semi-rebonded magnesia-chrome bricks, electrofused magnesia-chrome bricks (prioritized near the slag tapping area).

Furnace body (reaction zone, slag chamber): Directly bonded magnesia-chrome bricks, electrofused magnesia-chrome bricks (lower reaction zone).

Furnace top and charging port: High-alumina bricks (Al₂O₃≥75%), clay bricks (upper low-temperature zone).

Flue system (horizontal flue, rising flue): Directly bonded magnesia-chrome bricks (near the furnace body), high-alumina bricks or sillimanite bricks (far-end flue).

Special areas (copper water jacket inlay area): Wedge-shaped magnesia-chrome bricks, corundum refractory bricks.

Fused rebonded magnesia chrome brick

magnesia chrome brick

High-alumina-brick

high alumina brick

Corundum bricks

corundum brick

clay brick

clay brick

Ruitai Lianxin Customer Case

fire bricks Vietnamese customers

Vietnamese Customers | Irregularly Shaped Refractory Bricks | Kiln Lining

Ruitai Lianxin Kazakhstan Customer

Kazakhstan Customers | Refractory Brick Technology Exchange

Ruitai Lianxin Syrian customers

Syria | Refractory Cement | Blast Furnace Refractory Materials

refractory brick India customers

Indian Customers | Refractory Brick Quality Check

refractory manufacturers in china

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Direct Refractory Factory

Indian | High Alumina Fire Brick | Ladle Refractory Fire Bricks

Contact Us

Oxygen-enriched Side-blown Furnace最先出现在Ruitailianxin。

]]> Refractory Cement https://www.lxrefra.com/product/refractory-cement/ Thu, 20 Nov 2025 08:40:56 +0000 https://www.lxrefra.com/?post_type=product&p=5107 Refractory cement, also known as aluminate cement, is a hydraulic cementitious material made from bauxite and limestone. It is produced by calcining clinker, which is primarily composed of calcium aluminate and contains approximately 50% alumina, and then grinding it into a powder.

Refractory Cement最先出现在Ruitailianxin。

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Description of Refractory Cement

Aluminate cement is typically yellow or brown, but can also be gray. The main minerals in aluminate refractory cement are monocalcium aluminate (CaO·Al2O3, abbreviated as CA) and other aluminates, as well as a small amount of dicalcium silicate (2CaO·SiO2).

Aluminate refractory cement is used to bind various refractory aggregates (such as corundum and calcined high-alumina bauxite) to produce refractory castables or refractory concrete, used as linings for industrial kilns.

Characteristics of refractory cement

High Temperature Resistance

Refractory cement can withstand high temperatures, with a refractoriness exceeding 1580°C.

High bond strength firmly binds refractory aggregates together; good plasticity facilitates construction, mixing, transportation, and molding.

Excellent resistance to chemical corrosion, resisting erosion by strong corrosive substances such as acids and alkalis.Calcium magnesium aluminate      refractory cement, in particular, exhibits even stronger resistance to slag erosion.

Refractory cement performs exceptionally well in resisting sulfate erosion.

Due to its high density, its concrete possesses excellent waterproofing properties.

Bulk aluminate cement
calcium aluminate cement
aluminate cement
calcium magnesium aluminate cement
lx aluminate cement
RTlx aluminate cement
RTLXaluminate cement

Application of refractory cement

•  Kiln : Used for furnace linings (such as cement rotary kilns, glass kilns, ceramic kilns, metallurgical furnaces, etc.) to withstand extreme temperatures and protect structural components.
•  Boiler : Construction and repair of high-temperature boilers and repair of refractory linings.
•  Incinerator : Assemble and line the inner walls of industrial incinerator chimneys and other high-temperature chimneys.
•  Other industrial applications : It is used for coatings and linings in the aluminum manufacturing industry, and for lining kilns in cement plants.
•  Refractory material manufacturing : Refractory cement, as an important binder, is used in the manufacture of refractory materials such as refractory bricks, refractory castables, and refractory precast components, to bind refractory aggregates into products with a certain shape and strength.

What is the price of refractory cement?

The main factors influencing price include quantity and type. As a high-temperature ductile material, the price of refractory cement depends on the selected quantity and type. Ruitai Lianxin’s team will provide different pricing plans based on customers’ specific needs. Customers ordering the same type in bulk can enjoy larger discounts.

furnace refractory lining
aluminate cement type
aluminate cement products
aluminate cement CA70
Aluminate cement packaging

Why Choose Ruitai Lianxin Refractory Cement?

Refractory cement and other high-quality refractory bricks constitute our core product line. As a specialized refractory bricks manufacturer & supplier, we are dedicated to providing global clients with optimal kiln solutions, backed by the following core advantages:

Industrial Refractory Bricks Wholesale

Advantages of Factory-Direct Sales

Ruitai Lianxin is a leading refractory bricks manufacturer, operating its own dedicated facility and committed to providing global customers with factory-direct refractory bricks and high-quality wholesale services.

Request a Free Sample

Strict Quality Control

Our fire brick factory has advanced production lines and a professional quality inspection team, which conducts rigorous testing on every batch of products to ensure that they meet international standards.

Refractory Solutions

Customized Supply

We fully understand the diverse needs of industries such as non-ferrous metals, steel, cement, and glass for refractory cement, can provide custom-sized refractory cement in terms of specifications, refractoriness rating, and shape, perfectly matching your kiln and equipment requirements.

Direct Refractory Factory

On-Time Delivery

Reinforced with high-strength strapping and solid wood pallets, and customized packaging is also available. We strictly adhere to our delivery commitments, delivering your order within 20-30 days.

Ruitai Lianxin Customer Case

As a world-renowned manufacturer and exporter of refractory materials, our refractory material customers are located all over the world, including Egypt, Kazakhstan, India, Vietnam, Russia and many others. We have earned the trust of customers in various countries around the world and have gained partners in various industries.

Egyptian clients

Egyptian Customers

Kazakhstan customers

Kazakhstan Customers

Indian customers

Indian Customers

Russian customers

Russian Customers

Syrian clients

Syrian Customers

fire bricks Vietnamese customers

Vietnamese Customers

Related Products

In addition to refractory cement, we also produce monolithic refractory materials such as refractory castables and refractory ramming mixes; insulation materials such as lightweight insulating bricks and alumina hollow sphere bricks; and refractory bricks such as alumina series bricks and magnesia series bricks. Please feel free to contact us if you have any needs.

high alumina castable

Refractory Castable

High-alumina-brick

High-Alumina Brick

ramming mix

Refractory Ramming Mix

magnesia bricks

Magnesia Brick

Contact Us

If you are seeking a trustworthy manufacturer and supplier of refractory bricks—or require refractory cement and wholesale refractory services—we are your ideal choice. As a direct-from-factory refractories supplier, Ruitai Lianxin offers not only highly competitive pricing but also professional customization services and comprehensive after-sales support.

Contact us today to receive a free quote and a customized refractory solution for your kiln; let us become your long-term partner in the field of refractory materials!

Refractory Cement最先出现在Ruitailianxin。

]]> Blast Furnace https://www.lxrefra.com/product/blast-furnace/ Fri, 14 Nov 2025 09:13:53 +0000 https://www.lxrefra.com/?post_type=product&p=5061 A blast furnace is a vertical metallurgical device that uses air or oxygen-enriched air blown in from the tuyeres at the bottom of the furnace. This air reacts with the ore, coke, and other furnace charge added from the top at high temperatures, undergoing an oxidation-reduction reaction.

Blast furnace is mainly used for smelting non-ferrous metals (such as lead, zinc, and copper) or producing pig iron (blast furnace).

Blast furnace boasts advantages such as high thermal efficiency, high unit productivity, high metal recovery rate, and low cost, making it an important piece of equipment in pyrometallurgy.

Blast Furnace最先出现在Ruitailianxin。

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Structural Components of Blast Furnace

 Furnace Top:  Equipped with a charging port and a flue gas outlet.

Furnace Body:  A vertical furnace body, which can be designed as rectangular or circular as needed, with an internal water jacket.

Tuyeres:  Located at the bottom of the furnace body, responsible for blowing in air or oxygen-enriched air.

Hearth:  Collects molten metal and slag; depending on the design, it may have a hearth or not, used for further separation of the melt.

Foreboard:  A device located outside the furnace used for separating the melt, particularly in some blast furnace designs.

Structural Components of blast furnace

Operating Principle of Blast Furnace

1. Charging: Solid materials (such as ore, flux) and fuel (coke) are added in batches from the top of the furnace.

2. Descending: The furnace charge moves vertically downwards under its own gravity.

3. Blast and Reaction: Air is blown in through the tuyeres and encounters the descending charge, undergoing an oxidation-reduction reaction at high temperature to melt the charge.

4. Melt Discharge: The molten mixture flows into the hearth or forehearth for separation; slag and matte are discharged separately.

5. Flue Gas Discharge: High-temperature flue gas rises through the gaps in the furnace charge column and exits from the flue gas outlet at the top of the furnace, entering the dust collection device.

blast-furnace-operating principle

Features and Benefits of Blast Furnace

High thermal efficiency (counter-current heat exchange)

Waste heat from flue gas fully preheats the furnace charge, achieving a thermal efficiency of 70%–85% and low energy consumption.

High daily output per unit area (20–30 t/m²・d for lead furnaces), suitable for large-scale production.

Thorough slag-gold separation, with a recovery rate of 95%–98%.

Simple structure, low investment; continuous operation, low maintenance costs.

Can process copper, lead, zinc, nickel, etc., suitable for both lump and sintered

Application of Blast Furnace

• Non-ferrous metal smelting: Used for smelting non-ferrous metal concentrates such as lead, zinc, and tin.
• Ironmaking: Blast furnaces are commonly used in ironmaking.
• Sulfide ore smelting: Can be used to smelt copper sulfide ores, producing copper matte and slag.
• Resource recovery: Closed blast furnaces can recover sulfur dioxide from flue gas, achieving sulfur resource recovery and reducing pollution.

Lianxin blast furnace
Ruitai blast furnace
Ruitai blast furnaces
Ruitai Lianxin blast furnaces
Ruitai Lianxin-blast furnace
Ruitai Lianxin-blast furnaces
Ruitai-blast furnace
Ruitai-blast furnaces

Key Performance Parameters of Blast Furnace

Operating Temperature: Tubular Zone 1400–1500℃, Hearth 1200–1300℃.

Blast Pressure: 0.08–0.15 MPa, Hot Blast Temperature 400–600℃.

Bed Energy Efficiency: Lead Blast Furnace 20–30 t/m²・d, Copper Blast Furnace 15–25 t/m²・d.

Lining Life: Si₃N₄-SiC Bricks 2–3 years, Ordinary High Alumina Bricks 6–12 months.

Comparison with other furnace types

Furnace Type Thermal Efficiency Bed Energy Rate Adaptability Maintenance Cost
Blast Furnace High (70%–85%) Large Strong (Polymetallic) Low
Reverberatory Furnace Medium (50%–60%) Small Weak Medium
Flash Furnace High (80%–90%) Large Strong (Concentrate) High

Refractory Bricks for Blast Furnace

The temperature, erosion (slag/molten metal/gas), scouring, and mechanical impact vary greatly across different parts of a blast furnace. Refractory bricks must be specifically matched to these differences. The core parts and their selection are as follows:

refractory bricks of blast furnace

1. Furnace Roof and Throat

High-alumina bricks (Al₂O₃ 65%-85%), clay bricks (Al₂O₃ 30%-45%, suitable for medium- and low-temperature furnace roofs).

2. Furnace Body (Upper/Middle/Lower)

– Upper: High-alumina bricks (Al₂O₃ 65%-75%), clay-high-alumina composite bricks;

– Lower Middle: Dense high-alumina bricks (Al₂O₃ 75%-85%), corundum-mullite bricks (Al₂O₃ ≥90%, suitable for large blast furnaces);

– Special operating conditions (high-basicity slag): Magnesia-alumina spinel bricks (MgO 15%-30% + Al₂O₃ 60%-75%), with stronger resistance to slag erosion.

3. Furnace Waist and Abdomen

Corundum bricks (Al₂O₃ ≥95%), magnesia-alumina spinel bricks, corundum-silicon carbide bricks (Al₂O₃ 80%-90% + SiC 5%-15%).

4. Hearth (Sidewalls/Bottom)

– Hearth sidewalls: Magnesia-carbon bricks (MgO 70%-80% + C 10%-20%), Alumina-magnesia-carbon bricks (Al₂O₃ 20%-30% + MgO 50%-60% + C 10%-15%), combining the slag resistance of magnesia with the thermal conductivity/impermeability of graphite;

– Hearth bottom: Semi-graphite carbon bricks, graphite carbon bricks (C ≥90%), with a clay brick/high-alumina brick insulation layer at the bottom. The upper carbon brick layer must have low porosity and high bulk density to prevent molten iron penetration.

5. Tunnels (Tunnel Bricks/Surrounding Lining Bricks)

Silicon nitride-bonded silicon carbide bricks (Si₃N₄ 10%-20% + SiC ≥70%), reaction-sintered silicon carbide bricks (SiC ≥85%), and corundum-silicon carbide-carbon bricks in some applications.

6. Taphole/Slag Taphole (Trough/Lending Bricks)

Magnesium-carbon bricks (trough lining bricks), aluminum-carbon bricks (around the taphole), silicon nitride-bonded silicon carbide bricks (critical parts of the trough), and the core of the taphole is formed on-site using ramming mix (alumina-carbon, magnesia-carbon).

Grade 2 high alumina refractory bricks

high alumina brick

corundum mullite refractory brick

corundum brick

Lianxin silicon carbide bricks

silicon carbide brick

Ruitai Lianxin magnesia carbon brick

magnesia carbon brick

Ruitai Lianxin Customer Case

refractory brick India customers

Indian Customers | Refractory Brick Quality Check

Ruitai Lianxin Syrian customers

Syria | Refractory Cement | Blast Furnace Refractory Materials

Egyptian customer

Egypt | Sintered Zirconia Corundum Brick | Glass Furnace

refractory Vietnamese customer

Vietnamese Customers | Irregularly Shaped Refractory Bricks | Kiln Lining

refractory manufacturers in china

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Direct Refractory Factory

Indian | High Alumina Fire Brick | Ladle Refractory Fire Bricks

Contact Us

Blast Furnace最先出现在Ruitailianxin。

]]> Anti-oxidation Nano-ceramic Coating https://www.lxrefra.com/product/anti-oxidation-nano-ceramic-coating/ Thu, 23 Oct 2025 06:45:18 +0000 https://www.lxrefra.com/?post_type=product&p=4737 Anti-oxidation nano-functional ceramic coatings are functional films made from nano-ceramic materials and applied to substrate surfaces. Their core function is to prevent oxidation in harsh environments such as high temperatures and corrosion, while also offering wear and high-temperature resistance.

The nano-scale grain structure creates a denser coating, significantly improving its anti-oxidation efficiency compared to traditional ceramic coatings. Not only does this coating prevent oxidation, it is also compatible with a variety of substrates, including metals and alloys. Anti-oxidation nano-functional ceramic coating is commonly used in applications requiring extremely high material stability, such as aircraft engine blades and high-temperature molds.

Anti-oxidation Nano-ceramic Coating最先出现在Ruitailianxin。

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Billet Oxidation Problem

Billet oxidation problem

Technical solutions for high temperature anti-oxidation of steel billets

Core Technologies

Nano-ceramic Powder Preparation Technology

  1. Preparation Technology for Low-Sodium Microcrystalline Alumina Powder;
  2. Control Technology for Crystalline Alumina Powder Formulation;
  3. Particle Size Composition and Optimization Technology;
  4. Ultrafine Powder Dry Powder Deagglomeration Technology.

Core Technologies for Generation II Anti-Oxidation Coatings

1.Optimized Environmentally Friendly Component Formula;

2.Enhanced Anti-Oxidation Performance: ① Improved Adhesion between Coating and Steel Billet;② Improved High-Temperature Toughness and Thermal Shock Resistance of Coating; ③ Enhanced High-Temperature Density of Coating.

Automated Spraying

Automated spraying machines are designed based on site conditions to achieve automated, efficient, and environmentally friendly steel billet spraying operations.

Protective Coating Application Flowchart

Technical Principle

  • Using a specific crystal form of alumina ceramic nanopowder as the base material, combined with a nanoceramic binder and nanocatalyst, it achieves low-temperature curing. At temperatures above 500°C, the nanoceramic particles connect and the grains fuse, achieving sintering densification.
  • The active substances in the coating material fully fill the remaining voids in the ceramic coating at high temperatures, enhancing the coating’s self-healing ability and adhesion.
  • Ceramic whiskers are used to achieve inter-grain bonding and enhance the coating’s toughness;
  • The coating’s expansion coefficient is adjusted to match the steel billet during heating, and rapidly contracts during cooling, allowing for complete descaling during the descaling process.
Action mechanism of high temperature ceramic coating

Characteristics of Nano Ceramic Coating

LX Anti-oxidation Nano-ceramic Coating

1.Significant Results

Reducing oxidation and burning losses on steel billets by 90% with significant results and relatively low material costs, it can create substantial economic benefits for steel companies.

2.Room-temperature Curing and Densification

After application, the film forms and solidifies naturally, eliminating the need for sintering and cracking, allowing direct use in the furnace.

3.Environmentally Friendly

The primary ingredient is nano-alumina, and all auxiliary ingredients are safe and environmentally friendly inorganic raw materials. They are non-corrosive, contain no organic volatiles, and do not affect the steel rolling process.

Basic Properties of Nano Ceramic Coatings

Items Test Standards Performance Parameters Items Performance Parameters
Status in the Container GB 9755-2001 5.3 Uniform, No Agglomeration, Flocculation or Precipitation Thermal Expansion The expansion coefficient is similar to that of the metal matrix and is not easy to crack
Color GB/T 1722-1992 White Adhesion Strong bonding with the steel billet, not easy to fall off
Adhesion GB/T 9286-1998 Level 1 Healing  Self-healing ability at high temperatures
Flexibility GB/T1731-93 ≥3mm Density Able to maintain density over the entire temperature range
Coating Hardness GB/T 6739-2006 8H Corrosion Resistance Acid and alkali resistant and corrosion resistant
Bond Strength GB/T 16777-2008 8MPa Volatility The vapor pressure is low at high temperature, and the volatilization loss of the coating is very small
Falling Sand Abrasion Test of Coating Film GB/T 23988-2009 3.0L/um Temperature Resistance Range 1300℃
Density Volumetric Method 1.9g/cm3 Persistence Can maintain good anti-oxidation performance for a long time

Application effect of high temperature anti-oxidation technology for steel billets

  • In the laboratory, after coating, carbon steel, bearing steel, pipeline steel, tool steel, and 304 stainless steel were oxidized at 1200-1300°C for three hours, achieving zero oxidation and zero burnout.
  • In industrial applications, this coating can reduce oxidation and burnout by 80-95%.
Application effect of high temperature anti-oxidation technology for steel billets

The use of high-temperature protective coating technology can reduce oxidation and burning losses by more than 90%, greatly improve the steel yield during the production process, directly reduce the difficulty of removing iron oxide scale, alleviate the depletion of surface elements, and improve the output and quality of steel.

LX Application effect of high temperature anti-oxidation technology for steel billets
Ordinary steel
Coated steel
Ordinary steel sheet
Coated steel sheet
Ordinary steel billets
Coated steel billets
LX Ordinary steel billets
LX Coated steel billets

Why Choose Ruitai Lianxin Anti-oxidation Nano-ceramic Coating?

Anti-oxidation nano-ceramic coating and other high-quality refractory bricks constitute our core product line. As a specialized refractory bricks manufacturer & supplier, we are dedicated to providing global clients with optimal kiln solutions, backed by the following core advantages:

Industrial Refractory Bricks Wholesale

Advantages of Factory-Direct Sales

Ruitai Lianxin is a leading refractory bricks manufacturer, operating its own dedicated facility and committed to providing global customers with factory-direct refractory bricks and high-quality wholesale services.

Premium Refractory Materials

Strict Quality Control

Our fire brick factory has advanced production lines and a professional quality inspection team, which conducts rigorous testing on every batch of products to ensure that they meet international standards.

Refractory Solutions

Customized Supply

We fully understand the diverse needs of industries such as non-ferrous metals, steel, cement, and glass for anti-oxidation nano-ceramic coating, can provide custom-sized anti-oxidation nano-ceramic coating in terms of specifications, refractoriness rating, and shape, perfectly matching your kiln and equipment requirements.

Direct Refractory Factory

On-Time Delivery

Reinforced with high-strength strapping and solid wood pallets, and customized packaging is also available. We strictly adhere to our delivery commitments, delivering your order within 20-30 days.

Ruitai Lianxin Refractory Brick Customer Case

As one of China’s professional refractory materials manufacturers, we specialize in the export of high-standard refractory bricks and provide industrial clients worldwide with factory-direct supplies. Our products and customized solutions have garnered widespread acclaim globally, and we maintain stable, long-term partnerships in numerous countries, including Uzbekistan, Syria, and Pakistan. Through deep collaboration with refractory brick clients worldwide, Ruitai Lianxin will continue to pursue mutually beneficial outcomes.

Ruitai Lianxin Kazakhstan Customer

Kazakhstan customer

Ruitai Lianxin Syrian customers

Syrian customer

refractory Vietnamese customer

Vietnamese customer

refractory brick India customers

India customer

Egyptian clients

Egyptian customer

Russian customers

Russian customer

Contact Us

As a professional refractory brick manufacturer, supplier, and factory, we offer high-quality factory-direct refractory bricks and wholesale services, and can customize kiln solutions to meet your needs. Contact us now, and our team will reach out to you as soon as possible to provide you with the best factory quote.

Anti-oxidation Nano-ceramic Coating最先出现在Ruitailianxin。

]]> Electric Arc Furnace https://www.lxrefra.com/product/electric-arc-furnace/ Wed, 15 Oct 2025 08:15:37 +0000 https://www.lxrefra.com/?post_type=product&p=4657 An electric arc furnace (EAF) uses intense electric arcs between graphite electrodes and metal to melt and refine materials, primarily for steel production, by recycling scrap steel and other metals.

EAFs are a key part of making steel more sustainable, as they can utilize 100% scrap steel and have significantly lower carbon emissions than traditional blast furnaces when powered by renewable energy.

The process involves charging scrap, creating a high-temperature arc to melt it, and then treating the molten metal to achieve the desired quality.

Electric Arc Furnace最先出现在Ruitailianxin。

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Structural Components

structural components of electric arc furnace

Shell and Roof

The furnace shell is usually welded from steel plates and has certain strength and stiffness. Construction is usually heavy duty steel. The roof is removable and is used to charge raw materials into the furnace. Additionally, electrode ports, through which the electrodes penetrate into the furnace are found in the roof.

Furnace lining

Refractory Material Furnace lining contains refractory materials which are high heat resistant. It protects the shell of the furnace, preventing it from being priced by molten metal. In addition to this, refractory lining assists in insulating the furnace. Eventually the lining will need to be replaced in order for it to perform at its best.

Charging System

The charging system feeds raw materials like scrap steel straight into the furnace. In this system, cranes and buckets called as “charging baskets” are generally used to load the scrap into furnace quickly and safely. More recent charging systems may be conveyor belts, or other automated system that enable continuous charging.

 Electrical Arc Furnace Transformer

The electrical arc furnace transformer converts and transports the required power to the electrodes. It also transforms the high voltage electricity from the power grid into lower voltage suitable for electric arc. Current regulation provided by the transformer is important for allowing stable arc conditions and controlling melting.

Cooling System

Because the temperatures produced from an electric arc furnace are exceptionally high, a cooling system is required to prevent melting. Generally, the cooling takes place through water cooled panels. These absorb excessive heat and maintain the temperatures of the furnace at safer levels.

Electric Arc Furnace Dust System

While operating a side product of electric arc furnace dust is produced. This dust includes harmful materials such as metal oxides and other materials. Some of this dust is captured by a dust collection system, where the harmful components are separated and destroyed or recycled valuable metals.

Operating Principle

Charging:

The furnace’s roof is opened, and large buckets of scrap steel are loaded into the furnace chamber.


Arc formation:

The roof and electrodes are closed, and the electrodes are lowered to make contact with the scrap.

Melting:

A high-power electric arc is generated, producing temperatures of up to 20,000°C to melt the metal.

Refining:

Oxygen and other materials like lime are added to the molten metal to remove impurities and form a slag, which separates from the molten iron. 

Tapping:

The molten metal is then poured out of a tapping spout for further processing into steel of various qualities.

operating principle of electric arc furnace

Features and Benefits

Recycling – Electrical arc furnaces are crucial for recycling scrap steel and other metals, making the steelmaking process more resource-efficient.

Sustainability – Electrical arc furnaces have a lower carbon footprint than blast furnaces, especially when using renewable electricity, and can operate with almost zero direct emissions.

Flexibility – Electrical arc furnaces offer flexibility in steelmaking, allowing for the production of high-quality steel from various recycled feedstocks.

Efficiency – The process allows for increased production time by reducing dead times associated with charging and other stages.

lianxin electric-arc-furnace
lx electric arc furnace
rtlx electric-arc-steel-furnace-
ruitai lianxin electric arc furnace
ruitailianxin electric arc furnace
ruitailx electric arc furnace

Applications of Electric Arc Furnace

Steelmaking

Electrical arc furnace is mainly used for steel making. The furnace has a broad carbon to specialty alloy steel capability. This fine control over the composition is why Electrical arc furnaces can produce both bulk steel and specialty steel products. In addition, electric arc furnaces can smelt iron ore, and the iron ore is gradually melted in the furnace, and then the metal is separated.

Alloy Production

Electric arc furnaces also work to create alloys through different metals mixed together. An Electrical arc furnace can be use for producing alloys like stainless steel (chromium and nickel). This is why materials for different industries like construction, automotive and aerospace can easily be manufactured.

Capacity and Types of Electric Arc Furnaces

ruitai direct electric arc furnace

Direct Electric Arc Furnace (DC EAF)

The electric arc is produced using direct current (DC) in a DC Electric Arc Furnace (DC EAF). A DC EAF requires fewer electrodes than an AC EAF, in turn saving costs. Typically, there is just one graphite electrode in a DC furnace which tends to stay in place longer and provides arc stability. In addition, DC furnaces also tend to be quieter and have the potential for greater energy efficiency. But while they are generally more complicated structurally, the upfront cost to install may also be greater.

ruitai indirect electric arc furnace

Indirect Electric Arc Furnace

An AC Electric Arc Furnace (AC EAF) utilizes Alternating Current (AC) flowing through the graphite electrodes to produce the electric arc used for melting. AC EAFs are the most popular furnace type used for steel melting and offering flexibility, they can serve multiple applications. These furnaces are rather simple designs and can melt nearly any type of scrap metal. AC furnaces are a very versatile type of electric furnace which can be turned on and off quickly, ideal for small- to medium-scale steel making.

ruitai submerged electric arc furnace

Submerged Electric Arc Furnace

Submerged arc furnace (SAF) is a specific kind of furnace that is primarily used for producing ferroalloys or other metals. Electrodes are partially immersed in the charge materials to create a reducing atmosphere appropriate for some metallurgical reactions in e.g. SAF. SAFs are not used for melting steel, as is the case with standard EAFs, but rather to process ores such as manganese or chromium in order produce alloy components. Specialized submerged electric arc furnaces can be designed to attain high melting temperatures which facilitates finding suitable profiles for alloys with desired properties.

Refractory bricks of Electric Arc Furnace

refractory bricks of electric arc furnace

Furnace roof

High-alumina bricks with an alumina content of 75%-85% are commonly used. Basic bricks such as fired or unfired magnesia bricks and magnesia-chrome bricks may also be used, or cast refractory precast components may be used.

Furnace walls

Magnesia bricks, unfired magnesia basic bricks, and asphalt-bonded magnesia and dolomite ramming materials are commonly used for furnace walls. Magnesia-chrome bricks and high-quality magnesia bricks are used for ultra-high power electric arc furnaces or those used for smelting special steels. Magnesia-carbon bricks are widely used in the slag line and hotspots.

Furnace bottom

The furnace bottom and bank form the melt pool. The working layer is constructed with tar-asphalt-bonded magnesia bricks, and the permanent lining is mostly constructed with magnesia bricks. At the slag line above the bank, fused-cast magnesia-chrome bricks or re-bonded magnesia-chrome bricks are commonly used, with magnesia-carbon bricks also being an option.

Taphole

The taphole bricks are asphalt impregnated fired magnesia bricks, the tube bricks are magnesia carbon bricks with a resin-bound carbon content of 15%, and the end bricks are magnesia carbon bricks with a resin-bound carbon content of 10%-15%.

Magnesia bricks manufacturer

Magnesia Brick

Magnesium chrome refractory bricks

Magnesia Chrome Brick

magnesia carbon brick

Magnesia Carbon Brick

Refractory high alumina bricks

High Alumina Brick

Ruitai Lianxin Fire Brick Customer Cases

As one of China’s professional manufacturers of refractory materials, we specialize in the export of high-standard refractory bricks and provide industrial clients worldwide with factory-direct supplies.

Our products and customized kiln solutions have garnered widespread acclaim globally, and we maintain stable, long-term partnerships in numerous countries, including Uzbekistan, Syria, and Pakistan. Through deep collaboration with refractory brick clients worldwide, Ruitai Lianxin will continue to pursue mutually beneficial outcomes.

lianxin shipping

Indian | High Alumina Fire Brick | Ladle Refractory Fire Bricks

refractory manufacturers in china

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Indian customers

Indian Customers | High Alumina Refractory Brick | Cement Kiln

Uzbekistan customer

Uzbekistan | Magnesium Aluminum Chromium Spinel Brick | Rotary Kiln

Syrian clients

Syria | Refractory Cement | Blast Furnace Refractory Materials

Russian customers

Russia | Magnesium Chrome Brick | Cement Kiln Refractory Bricks

Cooperation Partners

We have many outstanding partners from all walks of life. Together with us, these partners have forged brilliant achievements and injected unlimited impetus into development.

YONGNING GOLD$LEAD
BEIJING LIRR
CHINA GOLD
CNMC
ENFI
Jind Gold And Lead
LB GROUP
LTGF
MINMETALS
MS
New Chun Xing
XIN JIN YE

Contact Us

As a professional refractory brick manufacturer, supplier, and factory, we offer high-quality factory-direct refractory bricks and wholesale services, and can customize kiln solutions to meet your needs. Contact us now, and our team will reach out to you as soon as possible to provide you with the best factory quote.

Electric Arc Furnace最先出现在Ruitailianxin。

]]> Converter https://www.lxrefra.com/product/converter/ Sun, 28 Sep 2025 10:10:14 +0000 https://www.lxrefra.com/?post_type=product&p=4477 A converter is a metallurgical furnace with a rotating furnace body used for blowing steel or matte. Based on the properties of the refractory lining, converters can be divided into basic converters and acid converters; based on the location of gas injection, they can be divided into bottom-blown, top-blown, and side-blown converters; and based on the blowing gas used, they can be divided into air converters and oxygen converters. The core feature of a converter is its rotating furnace body, which allows for flexible operations such as charging, blowing, and tapping. It also boasts extremely high smelting efficiency and speed, making it a key piece of equipment for efficient production in the metallurgical industry.

Converter最先出现在Ruitailianxin。

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Converter

Structural Components

The furnace body consists of a steel plate-welded shell and a refractory lining within it. The lining consists of a working layer, a permanent layer, and a filling layer. The furnace body consists of an upper furnace chamber and a lower furnace bottom.

The furnace cap is often truncated conical in shape to reduce blowing splashes and heat loss, facilitate gas discharge, and is often water-cooled at the furnace mouth. The furnace body, generally cylindrical, serves as the load-bearing part of the furnace. The tapping port is located at the junction of the furnace cap and the refractory bricks of the furnace body.

The support ring supports the entire weight of the furnace body and transmits tilting torque, bearing dynamic loads, impact loads, and thermal loads.

The furnace bottom is available in either truncated-conical or spherical shapes. The truncated-conical shape is used for small and medium-sized converters under 50 tons, while the spherical shape is mostly used for furnaces over 120 tons.

Lianxin converter

Operating Principle

Take a steelmaking converter as an example:

Scrap steel and other materials are first loaded into the furnace, followed by molten iron and slag-forming materials.

High-pressure oxygen is then blown in through an oxygen lance inserted from the top of the furnace. This oxygen reacts with the hot iron to remove impurities, such as silicon, manganese, and carbon, while generating heat to raise the temperature of the molten steel.

When the molten steel reaches the required composition and temperature, blowing is stopped and the furnace body is tilted to tap the steel. Deoxidizers are added during tapping to remove oxygen and adjust the composition.

Ruitai Lianxin-Converter

Characteristics of Converters

1. Outstanding Production Efficiency:

Taking the steelmaking converter as an example, a single-furnace smelting cycle is typically only 30-60 minutes, significantly faster than other steelmaking equipment, enabling rapid response to large-scale steel demand.

2. Strong Process Adaptability:

It can be used to produce steel using molten iron as the primary raw material, as well as non-ferrous raw materials such as copper matte and nickel matte. Adjustments to the injected gas (such as oxygen or air) and slagging agents can be made to accommodate different smelting objectives.

3. Energy Efficiency and Cost Advantages:

The oxidation reaction of the raw materials during the smelting process releases a significant amount of heat, significantly reducing external energy consumption and lowering production costs.

Applications of Converters

Converter is primarily used in steelmaking and is the most important piece of steelmaking equipment. However, converter can also be used in copper and nickel smelting. For example, the horizontal converter can process copper matte, oxidize and convert copper matte into blister copper, and convert nickel matte.

 

RuiTaiLianXin Converter
RuiTaiLianXin- Converter
LX-converter
Lianxin-converter
LX converter
RT LX-converter

Classification of Converters

1. Top-blown Oxygen Converter (LD Converter / BOF):

Oxygen lances are inserted from above the furnace opening for oxygen blowing. Simple structure, low cost, and the mainstream type for ordinary steel mills.

2. Bottom-blown Oxygen Converter:

Oxygen is injected through permeable bricks at the bottom of the furnace, along with a stirring medium. The composition is uniform, and dephosphorization is effective, making it suitable for high-phosphorus hot metal.

3. Top-and-Bottom Combined Blowing Converter (Modern Mainstream):

Top-blown oxygen blowing combined with weak bottom stirring, integrating the advantages of both methods. Currently used in over 90% of steel mills, it produces high-quality steel and has a short smelting cycle.

4. Side-blown Converter:

Air/oxygen is supplied from the side of the furnace. Mostly small furnaces, used in small steel mills, scrap metal smelting, and non-ferrous metal refining.

Refractory Bricks for Converters

Different parts of the converter are subject to varying degrees of high temperature, slag erosion, and mechanical impact, necessitating significant differences in the refractory materials used. Basic refractories are primarily used in the core (to meet the requirements of steelmaking and slag formation).

RT LX converter

1. Furnace Lining (Core Working Layer)

Furnace Bottom: Magnesia-carbon bricks (ordinary magnesia-carbon bricks, carbon content 10%-14%) are commonly used. More economical fired magnesia bricks can be used in the center of the bottom.

Furnace Shaft (Straight Section): High-grade magnesia-carbon bricks (magnesia purity ≥96%, carbon content 14%-18%) are required for enhanced erosion resistance.

Furnace Cap (Conical Section): Magnesia-carbon bricks or magnesia-alumina-carbon bricks (with added alumina for improved thermal shock resistance) are commonly used to prevent cracking caused by sudden temperature changes.

2. Taphole

Ultra-high erosion-resistant refractory materials are used, primarily alumina-carbon refractories (such as corundum-carbon bricks).

3. Furnace Mouth (Charging/Oxygen Blowing Area)

Mash-in magnesia carbon bricks or precast castable blocks are commonly used (e.g., magnesia castables, which can be cast and repaired on-site and are cost-effective).

4. Permanent Layer and Filling Layer (Non-working Layer)

Permanent Layer: Commonly used are fired magnesia bricks or magnesia-alumina bricks (low cost, high strength, and no direct slag corrosion).

Filling Layer: Generally, bulk magnesia or lightweight magnesia castables are used, which are easy to construct and can absorb the expansion stress of the working layer.

magnesia carbon brick

magnesia carbon brick

magnesia brick

magnesia brick

corundum mullite brick

corundum brick

high alumina castable

refractory castable

Contact Us

Converter最先出现在Ruitailianxin。

]]> Reverberatory Furnace https://www.lxrefra.com/product/reverberatory-furnace/ Wed, 24 Sep 2025 07:30:11 +0000 https://www.lxrefra.com/?post_type=product&p=4371 A reverberatory furnace is a chamber-type flame furnace widely used in industrial smelting.

Reverberatory furnace consists of a furnace base, furnace bottom, furnace walls, furnace roof, charging port, product discharge port, and flue. Ancillary equipment includes charging devices, air blasting devices, fume exhaust devices, and waste heat recovery devices.

Reverberatory Furnace最先出现在Ruitailianxin。

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Reverberatory Furnace

Structural Components

A reverberatory furnace is a chamber-type flame furnace widely used in industrial smelting.

Reverberatory furnace consists of a furnace base, furnace bottom, furnace walls, furnace roof, charging port, product discharge port, and flue. Ancillary equipment includes charging devices, air blasting devices, fume exhaust devices, and waste heat recovery devices.

In non-ferrous metal smelting, such as the smelting and refining of copper, lead, zinc and other metals;

In the glass industry, reverberatory furnaces are used to melt glass raw materials to make them into uniform glass liquid.

Ruitai reverberatory furnace

Operating Principle

Fuel is thoroughly mixed with air and combusted in the combustion chamber, generating high-temperature flames and furnace gases, reaching temperatures of 1500°C to 1700°C or even higher. These high-temperature flames and furnace gases flow within the furnace, transferring some of the heat directly to the material through radiation and some indirectly through reflection from the furnace roof and walls, heating the material, melting it, and initiating physical and chemical reactions.

RT LX-reverberatory furnace

Features of Reverberatory Furnace

  • Reverberatory furnace has simple structure, low investment, strong adaptability to raw materials and fuels, capable of processing a wide range of materials, especially fine-grained powders, easy to scale up, and low cost.
  • Disadvantages include significant metal oxidation losses, high fuel consumption, large flue gas volumes with low sulfur dioxide concentrations, difficulty in recycling, and environmental pollution.

Applications of Reverberatory Furnace

Reverberatory furnaces are important smelting equipment for non-ferrous metals such as copper, nickel, and tin. Reverberatory furnaces are used to process ores and concentrates, smelt ferroalloys, and perform metal fire refining. Reverberatory furnaces are commonly used as roasting equipment in metallurgy and chemical industries.

reverberatory furnace
reverberatory furnace
reverberatory furnace
reverberatory furnace
reverberatory furnace
reverberatory furnace
reverberatory furnace

Classification of Reverberatory Furnace

1. Smelting Reverberatory Furnace
Mainly used for smelting non-ferrous metal concentrates, it is representative of traditional large reverberatory furnaces.

2. Refining Reverberatory Furnace
Used for pyrometallurgical purification of crude metals, removing impurities (iron, sulfur, zinc, arsenic, etc.).

3. Melting/Holding Reverberatory Furnace
Mainly used for remelting, alloying, and holding metal materials, commonly used in casting and recycled metals.

4. Roasting/Calcination Reverb Furnace
Used for ore pretreatment, desulfurization, oxidation, and dehydration.

5. Semi-Smelting Reverb Furnace (Slag Reduction/Recycling Furnace)
Used for processing slag and recovering valuable metals.

Refractory Bricks for Reverberatory Furnace

The selection of refractory materials for various parts of a reverberatory furnace is primarily determined by the operating temperature of that area, the properties of the slag it contacts, and the degree of physical erosion it experiences.

Ruitai Lianxin reverberatory furnace

Furnace Bottom:

Furnace bottom is typically constructed of magnesia chrome bricks or magnesia carbon bricks. 

Furnace Walls:

Magnesia chrome bricks or directly bonded magnesia-chrome bricks are generally used in the critical areas from the furnace bottom to the furnace waist. High alumina bricks are sometimes used in the lower-temperature areas below the furnace roof.

Furnace Roof:

The furnace roof is typically constructed with high-alumina bricks or clay bricks in a vaulted structure. Some large reverberatory furnaces also utilize a suspended furnace roof, employing higher-quality high-alumina bricks or corundum bricks for easier maintenance and replacement.

Flue Duct and Waste Heat Recovery System:

Clay bricks or lightweight clay bricks are generally used, meeting these requirements while effectively reducing costs.

magnesia chrome brick

magnesia chrome brick

magnesia carbon brick

magnesia carbon brick

corundum brick

corundum brick

High-alumina-brick

high alumina brick

Contact Us

Reverberatory Furnace最先出现在Ruitailianxin。

]]> Zircon Brick https://www.lxrefra.com/product/zircon-brick/ Wed, 17 Sep 2025 08:39:32 +0000 https://www.lxrefra.com/?post_type=product&p=4243 Zircon bricks are primarily made from zirconium, an acidic refractory material. As a leading refractory brick manufacturer & supplier with over 20 years of export experience, Ruitai Lianxin Refractory Brick Manufacturer focuses on producing high-quality zirconium refractories specifically designed for high-temperature furnaces such as glass melting furnaces, copper smelting furnaces, and non-ferrous metal smelting kilns. These premium refractory bricks are designed to withstand the most extreme high-temperature and corrosive industrial environments.

ZrO₂(%) : ≥60%

SiO₂(%)：≥33

Refractoriness under load : ≥1500°C

Bulk density g/cm3（°C） ：≥3.6

Zircon Brick最先出现在Ruitailianxin。

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Zircon Refractory Brick

Our zircon refractory bricks are made from high-purity zirconium sand (ZrSiO₂) using advanced high-pressure molding and high-temperature sintering processes. This results in a dense and uniform structure, endowing them with excellent thermal stability, corrosion resistance, and mechanical strength.
As a professional zirconium refractory bricks manufacturer, we ensure that every brick meets stringent international quality standards. Ruitai Lianxin’s zirconium fire bricks effectively compensate for the performance deficiencies of ordinary refractory bricks under harsh operating conditions.

High-Quality Zircon Brick
Fire Zircon Brick
Zircon Brick Wholesale
Zircon Bricks For Glass Kiln

Characteristics of Zircon Bricks

Our premium zirconium bricks excel in key parameters, making them the preferred choice for industries worldwide:

  • Superior High-Temperature Stability : Maintaining structural integrity even at temperatures up to 1750°C;
  • Excellent Corrosion Resistance : Extremely resistant to molten glass, non-ferrous metals, and acidic slags;
  • Exceptional Thermal Shock Resistance : Withstanding rapid temperature fluctuations without cracking or spalling;
  • Low Thermal Conductivity : Reducing heat loss and improving the energy efficiency of industrial furnaces.

Widespread Application Scenarios of Zircon Bricks

Zircon refractory fire bricks are renowned for their superior performance and are widely used in various high-temperature industrial applications. As a trusted refractory brick manufacturer, we provide customized kiln solutions for specific applications:

In the glass industry, refractory zircon bricks are suitable for float glass furnaces, glass melt transport troughs, and furnace top linings. Zircon fire bricks for glass furnaces are the preferred choice for critical components, primarily used in the furnace bottom and sidewalls, furnace top and upper structure, furnace mouth and regenerators, as well as the furnace throat and discharge port.
Our zirconium refractories possess excellent resistance to molten glass corrosion and alkaline steam, ensuring longer furnace life and higher glass quality.

RTLX glass melting furnace
ruitai glass melting furnace
ruitai glass melting furnaces
ruitailianxin glass melting furnace

Zirconium bricks are essential refractory bricks for copper, lead, zinc, and nickel smelting furnaces and other non-ferrous metal kilns. Ruitai Lianxin’s zircon bricks are particularly suitable for lining smelting, refining, and casting zones.

Ruitai Lianxin electric arc furnace
ruitailianxin electric arc furnace
lianxin electric-arc-furnace

Ceramics industry : high-temperature kiln linings and kiln furniture;
Petrochemical industry : cracking furnaces and reforming pipes;
Steel industry : continuous casting tundish nozzles and sliding doors.

Ruitai Lianxin Steel Ladle
Refractory Bricks for Petrochemical
rtlx electric-arc-steel-furnace-
steel plant refractory

Zirconium Brick Technical Parameters

As a professional refractory brick supplier, Ruitai Lianxin can provide comprehensive technical specifications for zirconium refractory bricks to help you select the most suitable refractory and fireproof bricks for your high-temperature kilns.

ZS65JA ZS65JB ZS60
ZrO2% (≥) 65 65 60
SiO2% (≥) 33 33 36
Fe2O3% (≥) 0.3 0.3 0.5
Bulk Density（g/cm2）(≥) 3.85 3.75 3.60
Apparent Porosity(%) (≥) 16 18 20
Cold Crushing Strength(MPa)≧ 100 100 100
0.2MPa Load Softening Start Temperature (≥) 1700 1700 1500
Thermal Shock Stability excellent excellent /

Why Choose Ruitai Lianxin Zircon Bricks?

Ruitai Lianxin is committed to providing global customers with superior high-temperature kiln refractory material solutions.

Industrial Refractory Bricks Wholesale

Factory Direct Supply

As a factory-operated refractory brick manufacturer, we wholesale zircon mullite bricks and various other refractory bricks at factory direct prices, eliminating intermediaries and significantly reducing your procurement costs.

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Comprehensive Quality Control

Ruitai Lianxin boasts an advanced quality control laboratory, rigorously controlling every stage of production. The company strictly adheres to the ISO 9001 quality management system standard to ensure consistent product quality.

Refractory Solutions

Customized Production Capability

Ruitai Lianxin Refractory Brick Factory can customize and produce zircon mullite bricks of specific sizes and shapes according to your drawings and technical parameters to fully meet your specific kiln needs.

lianxin shipping

Extensive Export Experience

With over 20 years of experience exporting refractory materials, we have established solid partnerships with clients in more than 30 countries. We handle all aspects of international shipping, ensuring timely delivery within 15-30 working days.

Zircon Brick Refractory Brick Price

Ruitai Lianxin offers highly competitive and transparent wholesale prices for zirconium tiles. The final price depends on several factors: product grade and specifications, order quantity (bulk discounts available), customization requirements, packaging specifications, and shipping destination.
We offer exclusive pricing for long-term partners. For custom-shaped tiles or rush orders, please contact us for a detailed quote.

Ruitai Lianxin Refractory Brick Manufacturing Process

Ruitai Lianxin refractory brick manufacturer has always followed a strict standardized production process to ensure that every refractory brick has consistent quality and reliable performance.

Manufacturing Process of Lianxin Refractory Brick

Ruitai Lianxin Refractory Brick Customer Case

As one of China’s leading professional refractory material manufacturers, we focus on exporting high-standard refractory bricks and providing factory-direct refractory bricks to industrial clients worldwide. Our products and customized kiln fire bricks solutions are widely praised globally, and we have stable, long-term partners in many countries, including Uzbekistan, Syria, and Pakistan. Ruitai Lianxin will continue to pursue mutual benefit and win-win results through in-depth cooperation with global refractory brick customers.

lianxin shipping

Indian | High Alumina Brick | Ladle Refractory Fire Bricks

refractory manufacturers in china

Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining

Indian customers

Indian Customers | High Alumina Refractory Fire Brick | Cement Kiln

Uzbekistan customer

Uzbekistan | Magnesium Aluminum Chromium Spinel Brick | Rotary Kiln

Syrian clients

Syria | Refractory Cement | Blast Furnace Refractory Materials

Russian customers

Russia | Magnesium Chrome Brick | Cement Kiln Fire Bricks

Contact Us

If you are looking for a trustworthy refractory brick supplier, or need wholesale zirconia-mullite bricks and refractory brick services, we are the ideal choice. As a factory-direct refractory brick supplier, Ruitai Lianxin not only offers highly competitive prices, but also provides professional customization services and comprehensive after-sales support.
Contact us today for a free quote and customized kiln refractory brick solutions. Let us become your long-term partner in the refractory materials field!

Zircon Brick最先出现在Ruitailianxin。

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