Characteristics of Magnesia-Chrome Bricks
- Excellent high-temperature stability
- Excellent corrosion resistance and erosion resistance
- Exceptional thermal shock resistance
- High structural density and durability




Applications of Magnesia-Chrome Bricks
Refractory Fire Bricks For Cement Kiln
Magnesium-chrome bricks play a crucial role in cement rotary kilns, especially in the high-temperature and transition zones.
Refractory Bricks For Glass Furnace
Used as a lining for glass furnaces, it can withstand the high temperatures of molten glass and the corrosive effects of molten glass, reducing the frequency of furnace maintenance.
Refractory Bricks For Smelting
Magnesium-chrome bricks are widely used in flash smelting furnaces, melting furnaces and other high-temperature equipment.
Refractory Bricks For Steel Furnace
Ruitai Lianxin’s magnesia-chrome bricks are widely used in the linings of steelmaking equipment, including converters, electric furnaces, ladles, and refining furnaces.
Classification of Magnesia-Chrome Fire Bricks
Our magnesia chrome bricks are mainly divided into direct bonded magnesia chromium bricks, electro-fusion rebonded magnesia chromium bricks and semi-rebonded magnesia chromium bricks. As a reliable refractory brick manufacturer, we strictly control the production process of each brick to ensure stable quality and meet international export standards.
Direct-bonded Magnesia Chrome Brick
As a supplier that directly produces refractory bricks, Ruitai Lianxin’s directly bonded magnesia-chrome bricks use high-purity magnesia and chromium concentrate as raw materials. Through strict batching, high-pressure molding and high-temperature sintering processes, the products have excellent structural density and high-temperature stability.




Characteristics of Directly Bonded Magnesia-Chrome Fire Bricks
- Excellent high temperature resistance
- Excellent corrosion resistance
- Excellent thermal shock resistance
- High structural density and low porosity
Applications of Directly Bonded Magnesia-Chrome Bricks
- Electric arc furnace;
- Copper converter flash furnace;
- RH, DH vacuum treatment unit;
- VOD furnace, AOD furnace;
- Cement rotary kiln.
Direct–bonded Magnesia Chrome Brick
| LX-DMC-12A | LX-DMC-12B | LX-DMC-12C | ||
| Physical Property: | ||||
| Bulk Density(g/cm3) | ≥ | 3.05 | 3.00 | 3.00 |
| Apparent Porosity(%) | ≤ | 18 | 20 | 20 |
| Cold Crushing Strength(MPa) | ≥ | 45 | 45 | 40 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1700 | 1650 | 1600 |
| Thermal Shock Resistance( 950℃,Air)(Cycles) | ≥ | 80 | 60 | 40 |
| Chemical Analysis(%): | ||||
| MgO | ≥ | 75 | 70 | 60 |
| Cr2O3 | ≥ | 12 | 12 | 12 |
| SiO2 | ≤ | 1.5 | 2.5 | 3.2 |
| Note:All data are average values obtained at samples for laboratory purposes. | ||||
Electrofused Rebonded Magnesia-Chrome Bricks
Electrofused rebonded magnesia-chrome bricks are high-grade alkaline refractory products synthesized from magnesia-chrome spinel using an electrofusion method, and are formed under high pressure and sintered at high temperature. Compared with ordinary magnesia-chrome bricks, they have higher purity and superior high-temperature performance, making them the preferred material for high-end high-temperature industrial equipment.
Features of Fused Rebonded Magnesia Chrome Brick
- Ultra-high purity;
- Excellent corrosion resistance;
- Exceptional thermal shock resistance;
- High wear resistance and strong mechanical strength
Application of Fused Rebonded Magnesia Chrome Brick
- Cement lime rotary kiln;
- Glass melting furnace, iron smelting furnace;
- Non-ferrous metal smelting furnace;
- petrochemical hazardous waste incinerator.
As a reliable refractory fire brick supplier and manufacturer, we offer custom sizes & shapes of refractory bricks to meet our customers’ specific needs. Our electrofused rebonded magnesia-chrome bricks are exported to Europe, Southeast Asia, and other regions, serving the global high-temperature kiln industry.
Fused Rebonded Magnesia Chrome Brick
| LX-FRM Ge-12 | LX-FRM Ge-14 | LX-FRM Ge-16 | LX-FRM Ge-18 | LX-FRM Ge-20 | LX-FRM Ge-22 | LX-FRM Ge-24 | ||
| Physical Property: | ||||||||
| Bulk Density(g/cm3) | ≥ | 3 | 3.05 | 3.08 | 3.1 | 3.15 | 3.2 | 3.25 |
| Apparent Porosity(%) | ≤ | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Cold Crushing Strength(MPa) | ≥ | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 |
| Chemical Analysis(%) | ||||||||
| MgO | ≥ | 68 | 65 | 60 | 58 | 55 | 50 | 45 |
| Cr2O3 | ≥ | 12 | 14 | 16 | 18 | 20 | 22 | 26 |
| SiO2 | ≤ | 1.2 | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.5 |
| Note:All data are average values obtained at samples for laboratory purposes. | ||||||||
Semi-Recombined Magnesia-Chrome Bricks
Semi-rebonded magnesia-chrome bricks combine the advantages of directly bonded magnesia-chrome bricks and electrofused rebonded magnesia-chrome bricks. These fire bricks are synthesized using an electrofusion method with magnesia-chrome spinel, high-purity magnesia, high-purity concentrate, and composite high-temperature toughening agents. Through scientific ingredient formulation and sintering processes, a perfect balance between performance and cost is achieved.
Characteristics of Semi-Recombined Magnesia-Chrome Bricks
- Balanced performance
- High cost-performance ratio
- Excellent workability
- Consistent Quality
Application of Semi-Recombined Magnesia-Chrome Bricks
- Conventional steelmaking furnace
- Cement rotary kiln preheater
- Glass annealing furnace
- Auxiliary equipment for non-ferrous metal smelting
Semi Rebonded Magnesia Chrome Brick
| LX-FRM Ge-12 | LX-FRM Ge-14 | LX-FRM Ge-16 | LX-FRM Ge-18 | LX-FRM Ge-20 | LX-FRM Ge-22 | LX-FRM Ge-26 | ||
| Physical Property: | ||||||||
| Bulk Density(g/cm3) | ≥ | 3 | 3.05 | 3.08 | 3.1 | 3.15 | 3.2 | 3.25 |
| Apparent Porosity(%) | ≤ | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Cold Crushing Strength(MPa) | ≥ | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 |
| Chemical Analysis(%) | ||||||||
| MgO | ≥ | 68 | 65 | 60 | 58 | 55 | 50 | 45 |
| Cr2O3 | ≥ | 12 | 14 | 16 | 18 | 20 | 22 | 26 |
| SiO2 | ≤ | 1.2 | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.5 |
| Note:All data are average values obtained at samples for laboratory purposes. | ||||||||
As a professional refractory brick manufacturer, Ruitai Lianxin offers this high-performance refractory fire brick at a competitive price. We support wholesale of refractory bricks and can accept large-volume orders as well as small-batch customization.
Why choose Ruitai Lianxin Refractory fire bricks?
Factory Direct Sales
We supply refractory bricks directly from the factory at highly competitive wholesale prices, exporting globally.
Professional Production
Advanced production equipment and a rigorous quality control system ensure that every batch of refractory bricks meets international standards.
Customized Solutions
As a professional refractory brick manufacturer, we can customize sizes, specifications, and performance according to your specific needs.
Magnesium Chrome Refractory Brick Price
The main factors influencing the price of Ruitai Lianxin magnesia-chrome refractory bricks include quantity and type. Ruitai Lianxin’s magnesia-chrome bricks are a key refractory material for kiln construction. The Ruitai Lianxin team will provide different pricing plans based on the customer’s specific needs. The price varies depending on the quantity and model of the selected magnesia-chrome refractory bricks. Customers ordering larger quantities of the same model of refractory bricks can enjoy greater discounts.
Additionally, we can also provide other refractory brick options based on your kiln’s operating conditions.







Ruitai Lianxin Refractory Brick Manufacturing Process
As a supplier of high-quality refractory fire bricks, Ruitai Lianxin refractory brick company has always adhered to strict standardized production processes to ensure that every refractory brick has consistent quality and reliable performance.
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 solutions are widely praised globally, and we have stable, long-term partners in many countries, including Kazakhstan, Syria, and Russia. Ruitai Lianxin will continue to pursue mutual benefit and win-win results through in-depth cooperation with global refractory brick customers.
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.























