Magnesia Chrome Brick
LAR’s magnesia chrome bricks are high-quality refractory materials used in steelmaking and metallurgical furnaces. The product combines magnesia (MgO) with chromite (Cr₂O₃), forming a strong and chemically stable structure. This composition provides excellent resistance to slag corrosion and thermal stress.
LAR’s magnesia Chrome Brick provides excellent resistance to high temperature, slag corrosion, and thermal shock. The product performs well in severe industrial furnace environments with heavy thermal loads.Magnesia chrome brick contains high purity magnesia and chromium oxide materials. These materials improve structural stability and enhance resistance to chemical attack from basic slags.
Direct bonded and rebonded mag chrome brick products offer higher density and stronger wear resistance. The bricks maintain stable performance during repeated heating and cooling cycles.Magnesia chrome bricks are widely used in cement rotary kilns, non-ferrous metal furnaces, refining furnaces, and glass industry applications. The products help extend furnace lining life and reduce maintenance costs.
Product Overview
Magnesia chrome bricks are high-performance refractory materials designed for high-temperature industrial furnaces requiring excellent corrosion resistance and structural stability. These bricks are manufactured mainly from magnesia and chrome-containing materials, providing strong resistance to slag attack, thermal stress, and high-temperature erosion.
Mag chrome brick is widely used in cement rotary kilns, non-ferrous metal furnaces, glass kilns, and metallurgical equipment. The combination of magnesia and chromium oxide improves the refractory structure and helps maintain performance under severe operating conditions. These bricks can withstand repeated heating cycles and provide reliable protection for furnace linings exposed to chemical corrosion and mechanical wear.
Magnesia chrome brick offers advantages such as high refractoriness, good volume stability, and excellent resistance to alkaline and acidic slag environments. Its stable performance makes it suitable for critical furnace zones where long service life and lining reliability are required.
LAR manufactures customized magnesia chrome bricks according to different furnace designs, temperature conditions, and application requirements. With strict quality control and optimized production processes, LAR provides durable refractory solutions that help customers improve furnace efficiency, reduce maintenance frequency, and extend lining service life in demanding industrial applications.
Key Features
Strong Slag Resistance
The combination of magnesia and chromite resists basic and neutral slags. This property extends the brick’s service life in harsh environments.
High Temperature Stability
The magnesia chrome brick maintains its shape and strength at temperatures up to 1700°C. It resists deformation under heavy loads.
Excellent Thermal Shock Resistance
The structure absorbs stress from rapid temperature changes. The brick performs well in furnaces with fluctuating heat.
Reliable Mechanical Strength
The sintering process produces a high-density brick. The brick supports heavy furnace loads without cracking.
Long Service Life
The material resists chemical corrosion and thermal damage. Users reduce maintenance frequency and operational downtime.
Typical Product Types
Manufacturers offer different types of magnesia chrome bricks:
· High-purity magnesia chrome bricks
· Sintered magnesia chrome bricks
· Direct-bonded magnesia chrome bricks
· Impact-area bricks for converters and ladles
· Customized mag chrome brick shapes
Each type is designed for specific furnace zones and operating conditions. Engineers select the right brick based on slag type and temperature.
Technical Characteristics
Item | Data | ||||||
DMG8A | DMG8B | DMG12A | DMG12B | DMG16A | DMG16B | ||
MgO | % | ≥74 | ≥74 | ≥66 | ≥66 | ≥60 | ≥60 |
Cr2O3 | % | ≥8 | ≥8 | ≥12 | ≥12 | ≥16 | ≥16 |
SiO2 | % | ≤1.5 | ≤2.0 | ≤1.5 | ≤2.0 | ≤1.5 | ≤2.0 |
Apparent Porosity | % | ≤19 | ≤19 | ≤19 | ≤19 | ≤19 | ≤19 |
Bulk Density | g/cm3 | 2.98 | 2.98 | 3.10 | 3.10 | 3.15 | 3.15 |
CCS | MPa | ≥40 | ≥35 | ≥40 | ≥35 | ≥40 | ≥35 |
0.2MPa RUL ºC | ºC | ≥1660 | ≥1600 | ≥1660 | ≥1600 | ≥1660 | ≥1600 |
Technical values may vary depending on raw materials and production methods. Professional suppliers can provide customized specifications.
Applications
Magnesia chrome brick is widely used in high-temperature metallurgical processes:
· Steel converters
· Electric arc furnaces (EAF)
· Steel ladles
· Tapping and impact zones
These magnesia chrome bricks protect furnace linings. They improve operational efficiency and reduce downtime.
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Advantages Compared To Others
Type | Advantages | Application |
Magnesia Chrome Brick | Stronger slag resistance, higher thermal stability | Harsh steelmaking zones |
Magnesia Brick | Good high-temperature performance, lower cost | Less demanding areas |
Mag chrome brick provides better performance where slag corrosion and thermal stress are severe. Traditional magnesia bricks are suitable for non-critical furnace zones.
Customization & Manufacturing
Suppliers offering magnesia chrome bricks can provide tailored solutions. They adjust:
· Magnesia and chromite content
· Brick size, shape, and density
· Porosity control
· Sintering process
These steps ensure each magnesia chrome brick meets industrial standards. The final product supports long-term, reliable furnace operation.
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