Magnesia chrome bricks are high-performance refractory materials made from high-purity magnesia and chrome ore as the main raw materials, shaped by high pressure and fired at high temperature. These bricks offer excellent resistance to high temperatures, thermal shock, and corrosive environments, making them ideal for use in high-stress industrial furnaces.
With outstanding slag resistance and structural stability, magnesia chrome bricks are widely used in the lining of electric arc furnaces (EAF), converters, refining furnaces, non-ferrous metallurgical furnaces, cement rotary kilns, and other high-temperature processing equipment.
Technical Specifications
| Item / Grade | MGe-16A | MGe-16B | MGe-12A | MGe-12B | MGe-8A | MGe-8B |
|---|---|---|---|---|---|---|
| MgO (%) | ≥50 | ≥45 | ≥60 | ≥55 | ≥65 | ≥60 |
| Cr₂O₃ (%) | ≥16 | ≥16 | ≥12 | ≥12 | ≥8 | ≥8 |
| Apparent Porosity (%) | ≤19 | ≤22 | ≤19 | ≤21 | ≤19 | ≤21 |
| Cold Crushing Strength (MPa) | ≥35 | ≥25 | ≥35 | ≥30 | ≥35 | ≥30 |
| 0.2MPa RUL (℃) | ≥1650 | ≥1550 | ≥1650 | ≥1550 | ≥1650 | ≥1530 |
Key Features
Excellent resistance to high-temperature corrosion and erosion
Superior thermal shock resistance and mechanical strength
Low porosity and high bulk density
Customizable shapes and sizes available
Suitable for steel, copper, cement, and glass industries
Typical Applications
Steel-making furnaces (EAF, converter, ladle lining)
Non-ferrous metal smelting furnaces (copper, nickel, lead)
Rotary kilns in cement and lime industries
Glass tank regenerators and incinerators
Production Details
Our Magnesia Chrome Bricks are manufactured through a combination of dry pressing and high-temperature sintering. Premium-grade magnesite and chrome ore are selected to ensure optimal purity and consistency. We use advanced mixing and pressing equipment, followed by kilning at temperatures over 1700°C to achieve high density and low porosity. All bricks are subject to rigorous quality control in accordance with international refractory standards.
Packing and Shipping Details
Packaging: Bricks are securely packed in fumigated wooden pallets with plastic wrapping and corner protection to avoid damage during transit.
Unit Weight: Approx. 3.0–4.5 kg/brick depending on size
Shipping: We support international shipping via sea or land freight. Lead time varies based on order quantity, typically within 15–20 days.
Customized Packaging: Available upon request with customer logo and specification label.
Frequently Asked Questions (FAQ)
Q1: What is the lifespan of Magnesia Chrome Bricks in steel furnaces?
Depending on furnace conditions and slag chemistry, service life typically ranges from 20 to 50 heats.
Q2: Can I get a customized brick shape or size?
Yes. We offer customized shapes (arch, wedge, key, etc.) and dimensions based on your CAD drawings or technical specifications.
Q3. What’s the minimum order quantity (MOQ)?
Our MOQ is generally 5 tons. For trial orders or special projects, smaller quantities can be negotiated.
Q4: Are these bricks environmentally compliant?
Yes, we use controlled Cr₂O₃ sources and comply with international environmental regulations (e.g., RoHS).
Q5: Can you help with installation and application advice?
Definitely. Our technical support team can provide brick layout designs, thermal calculations, and application consulting.
