Magnesia Refractory Brick
Features of Magnesia Refractory Brick:
- Sintered magnesia fire brick is the main product of alkaline refractory materials.
- Magnesia refractory fire brick has high refractoriness and good corrosion resistance to iron oxides, alkaline slag and high calcium flux.
Magnesia Brick
| Physical Property: | LX–SMZ–89 | LX–SMZ–91 | LX–SMZ–93 | LX–SMZ–95 |
| MgO (%) ≥ | 89 | 91 | 93 | 95 |
| SiO2 (%) ≤ | / | / | 3.5 | 2.0 |
| CaO (%) ≤ | 3.0 | 3.0 | 2.0 | 2.0 |
| Apparent Porosity (%) ≤ | 20 | 18 | 18 | 18 |
| Cold Crushing Strength (MPa) ≥ | 50 | 60 | 60 | 60 |
| Refractoriness Under Load (°C) ≥ | 1550 | 1560 | 1620 | 1650 |
| Permanent Linear Change on heating ( 1650℃×2h) (%) | -0.6-0 | -0.5-0 | -0.4-0 | -0.3-0 |
| Thermal conductivity coefficient (1000°C)(W/m.k)≤ | / | 3 | / | 3.8 |
Application of Magnesia Fire Brick:
- steelmaking furnace linings, ferroalloy furnaces, mixed iron furnaces, non-ferrous metallurgical industrial furnaces;
- lime kilns in the building materials industry;
- regenerator grid heat exchangers in the glass industry;
- tunnel kilns and high-temperature calcining kilns in the refractory industry.
Magnesia Alumina Refractory Brick
Features of Magnesia Alumina Refractory Brick:
Magnesia aluminum fire brick with low calcium content of high quality magnesia and industrial alumina powder as the main raw materials, by high pressure molding, high temperature sintering, good thermal stability, to iron oxides, basic slag and other solvents have a good corrosion resistance.
Magnesia Alumina Brick
| Apparent Porosity(%) | ≤ | 18 | 19 |
| Bulk Density(g/cm3) | ≥ | 2.95 | 2.85 |
| Cold Crushing Strength(MPa) | ≥ | 45 | 40 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1700 | 1650 |
| Thermal Shock Resistance (950℃,Air Cooling)(Cycles) | ≥ | 120 | 100 |
| Thermal Expansion (1000℃) (%) | * | 1.2 | 1.2 |
| Thermal Conductivity (1000℃)(W/m.K) | ≤ | 4 | 3.8 |
| MgO | ≥ | 82 | 78 |
| Al2O3 | ≥ | 10 | 10 |
| SiO2 | ≤ | 1 | 3 |
| Note:All data are average values obtained at samples for laboratory purposes. | |||
Application of Magnesia Alumina Refractory Brick:
- masonry materials on the top of high temperature melting furnaces ;
- steel-making open hearth furnaces and electric copper reverberatory furnaces.
Magnesia-alumina-iron Spinel Refractory Brick
Features of Magnesia-alumina-iron Spinel Refractory Brick:
- good thermal shock stability and corrosion resistance;
- low thermal expansion;
- low thermal conductivity;
- good structural flexibility.
Magnesia-alumina-iron Spinel Brick
| MAFe-82A | MAFe-82B | MAFe-82C | ||
| Physical Property: | ||||
| Bulk Density(g/cm3) | ≥ | 2.95 | 2.92 | 2.90 |
| Cold Crushing Strength(MPa) | ≥ | 65 | 60 | 55 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1650 | 1600 | 1550 |
| Thermal Expansion( 1400℃) (%) | * | 1.4 | 1.3 | 1.2 |
| Apparent porosity | ≤ | 17 | 18 | 19 |
| Thermal Shock Resistance( 950℃,Air)(Cycles) | ≥ | 100 | 100 | 100 |
| Chemical Analysis(%) | ||||
| MgO | ≥ | 82 | 82 | 82 |
| Al2O3 | * | 11-13 | 11-13 | 11-13 |
| Fe2O3 | * | 1.5-3.0 | 1.5-3.0 | 1.5-3.0 |
| SiO2 | ≤ | 1.5 | 2.0 | 2.5 |
| Note:All data are average values obtained at samples for laboratory purposes. | ||||
Application of Magnesia-alumina-iron Spinel Refractory Brick:
- magnesia-alumina-iron spinel fire brick is mainly used in the non-ferrous metallurgy industry of various furnace top temperature fluctuation area;
- magnesia-alumina-iron spinel fire brick is used for the bottom of the melting pool, furnace wall and rotary kiln lining parts.
Magnesia-alumina-chrome Spinel Fire Brick
Features of Magnesia-alumina-chrome Spinel Fire Brick:
Magnesia-alumina-chrome compound spinel fire brick uses high purity magnesia and chromium concentrate as the main raw materials, through high pressure molding, high temperature sintering, with corrosion resistance and high temperature resistance characteristics.
Magnesia-alumina-chrome Spinel Brick
| LX-MLGe-80 | LX-MLGe-75 | ||
| Physical Property: | |||
| Cold Crushing Strength(MPa) | ≥ | 50 | 40 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1680 | 1650 |
| Apparent porosity | ≤ | 18 | 18 |
| Thermal Shock Resistance( 1100℃,water quenching)(Cycles) | ≥ | 10 | 8 |
| Chemical Analysis(%) | |||
| MgO | ≥ | 80 | 75 |
| Al2O3 | * | 9-13 | 9-13 |
| Cr2O3 | * | 3-5 | 3-5 |
| Note:All data are average values obtained at samples for laboratory purposes. | |||
Application of Magnesia-alumina-chrome Fire Spinel Brick:
- zinc play kilns and non-ferrous smelting furnace tops in the non-ferrous industry;
- high temperature kiln tops in the steel industry.
What is the Price of Magnesia Series Bricks?
The main factors affecting the price include: quantity and type. Magnesia series refractory bricks are key components for building kilns. Ruitailianxin team will provide different pricing plans according to the different needs of customers. The price of magnesia series bricks varies depending on the quantity and model selected. Customers who order large quantities of the same model can enjoy greater discounts.
Manufacturing Process of Ruitailianxin Refractory Brick
About Lianxin:
The company has more than 20 patented technologies, more than 20 corporate honors, and international certifications such as ISO. With an annual output of 300,000 tons, the company is a leader in China’s refractory industry. As a refractory bricks manufacturer, we will provide you with factory direct prices. With more than 20 years of experience and a team of more than 200 professionals, we are committed to helping you find a solution that suits your needs.
Why Choose Us?
- Free consultation and free quote
- High quality and source factory price
- Professional kiln design solution
- Professional kiln construction experience and technical guidance
- Fast delivery and after-sales maintenance
Customer Cases
As a world-renowned refractory manufacturer and exporter, our customers come from all over the world, including Kazakhstan, Uzbekistan, India, Russia, etc.The quality of our refractory bricks has won the trust of global customers and gained partners in various industries.
