Magnesia Chrome Brick
Magnesia Chrome Brick for sale
AGRM supplying a comprehensive range of magnesia chrome brick,which has high refractoriness, strong resistance to alkaline slag, and certain adaptability to acidic slag. It is used in high temperature furnaces and linings in the metallurgical industry, providing reliable refractory solutions for various operating conditions.
- MgO(≥): 45% - 75%;
- Cr2O3 (≥): 6% - 26%;
- Type: directly bonded magnesia chrome brick,fused recombined magnesia chrome brick etc.
composition of Mag Chrome Brick
Magnesia chrome bricks are one of AGRM’s hot-selling products. AGRM has been producing magnesia chrome bricks for more than 20 years and is the pioneer of this type of product in China. AGRM has a number of patents in this product area.
Magnesia chrome brick (also known as mag chrome brick) are classified as basic refractories. The composition of magnesia chrome bricks is centered around two main components: magnesium oxide (MgO) and chromium oxide (Cr2O3). The combination of these materials results in a high-performance refractory product. Magnesium oxide, as the primary component, provides excellent high-temperature resistance, corrosion resistance, and good thermal shock stability. Chromium oxide, the secondary component, further enhances the refractoriness, erosion resistance, and thermal shock stability of the brick.
properties of Magnesia Chrome Brick
The primary raw materials for magnesia chrome bricks are sintered magnesia and chromite, which, when combined, offer exceptional durability and stability in extreme conditions. These properties make mag chrome bricks ideal for various high-temperature applications in the metallurgical industry.
Specific properties are as follows:
- Good high-temperature volume stability and strong slag resistance;
- High refractory temperature, refractory temperature greater than 2000℃, firing temperature 1530-1700℃;
- Thermal shock resistance, rapid cooling resistance and rapid heating performance are better than magnesia bricks;
- Under a constant pressure of 0.2mpa, the load softening temperature is greater than 1530℃;
- Product specification: standard form, normal standard, shaped and special shaped bricks.
Classification of Magnesia Chrome Brick
Ordinary magnesia chrome brick
Ordinary magnesia chrome brick: MG-16A/MG-16B/MG-12A/MG-12B/MG-8A/MG-8B
Made by sintering magnesia and chromite at high temperature, they have high density and good thermal stability. They are suitable for permanent linings of cement rotary kilns, glass kiln regenerators, steelmaking furnaces and refining ladles.
Directly bonded magnesia chrome brick
Directly bonded magnesia chrome brick: ZMG-16A/ZMG-12A/ZMG-8A/ZMG-6
Use high-purity magnesia and chromite raw materials, sintered at a high temperature of about 1700℃. Its grains are in direct contact, with excellent corrosion resistance and acid resistance, and are commonly used in linings of high-temperature furnaces such as RH/DH furnaces, cement rotary kilns, and glass furnaces.
Fused Semi-Recombined Magnesia Chrome Brick
Fused semi-recombined magnesia chrome brick: BMG-26/BMG-24/BMG-22/BMG-20A/BMG-18/BMG-16A/BMG-12A
Made of electrofused MgO-Cr2O3 particles, magnesia and chromite, combining the advantages of direct bonded and rebonded bricks. With compact structure, low porosity and good thermal shock resistance, it is widely used in the side wall of electric furnace, degasser and slag line.
Fused Recombined Magnesia Chrome Brick
Fused recombined magnesia chrome brick: DMG-26/DMG-24/DMG-22/DMG-20/DMG-16/DMG-12
It is produced by full electric melting process, with compact structure, excellent high temperature resistance and corrosion resistance, and is often used in key parts of secondary refining furnaces such as VOD and AOD and glass kilns.
magnesia carbon bricks uses
magnesia chrome brick for heating furnace
Lining the furnace walls and floors: Their ability to withstand high temperatures and resist thermal shock makes them suitable for the inner linings of heating furnaces.
magnesia chrome brick for LSA furnace
Ladle lining: Their ability to withstand rapid temperature changes is crucial during the ladle heating and pouring processes.
magnesia chrome brick for PS converter
Lining the converter shell: They protect the steel shell from the intense heat and corrosive environment during steel production.
Magnesia Chrome Brick Specification parameters
1. Ordinary Magnesia Chrome Brick
| Item | Ordinary Magnesia Chrome Brick | |||||
| MG-16A | MG-16B | MG-12A | MG-12B | MG-8A | MG-8B | |
| MgO % | ≥50 | ≥45 | ≥60 | ≥55 | ≥65 | ≥60 |
| Cr2O3 % | ≥16 | ≥16 | ≥12 | ≥12 | ≥8 | ≥8 |
| Apparent Porosity % | ≤19 | ≤22 | ≤19 | ≤21 | ≤19 | ≤21 |
| Cold Crush Strength MPa | ≥35 | ≥25 | ≥35 | ≥30 | ≥35 | ≥30 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1650 | ≥1550 | ≥1650 | ≥1550 | ≥1650 | ≥1530 |
2. Directly Bonded Magnesia Chrome Brick
| Item | Directly Bonded Magnesia Chrome Brick | |||
| ZMG-16A | ZMG-12A | ZMG-8A | ZMG-6 | |
| MgO % | ≥60 | ≥68 | ≥75 | ≥75 |
| Cr2O3 % | ≥16 | ≥12 | ≥8 | ≥6 |
| SiO2 % | ≤1.5 | ≤1.5 | ≤1.5 | ≤2.5 |
| Apparent Porosity % | ≤18 | ≤18 | ≤18 | ≤18 |
| Cold Crush Strength MPa | ≥40 | ≥45 | ≥45 | ≥45 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1700 | |||
3. Fused Semi-Recombined Magnesia Chrome Brick
| Item | Fused Semi-Recombined Magnesia Chrome Brick | ||||||
| BMG-26 | BMG-24 | BMG-22 | BMG-20A | BMG-18 | BMG-16A | BMG-12A | |
| MgO % | ≥50 | ≥50 | ≥55 | ≥58 | ≥58 | ≥60 | ≥68 |
| Cr2O3 % | ≥26 | ≥24 | ≥22 | ≥20 | ≥18 | ≥16 | ≥12 |
| SiO2 % | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 |
| Apparent Porosity % | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crush Strength MPa | ≥40 | ≥45 | ≥45 | ≥45 | ≥40 | ≥45 | ≥45 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1700 | ||||||
4. Fused Recombined Magnesia Chrome Brick
| Item | Fused Recombined Magnesia Chrome Brick | |||||
| DMG-26 | DMG-24 | DMG-22 | DMG-20 | DMG-16 | DMG-12 | |
| MgO % | ≥50 | ≥50 | ≥55 | ≥58 | ≥62 | ≥68 |
| Cr2O3 % | ≥26 | ≥24 | ≥22 | ≥20 | ≥16 | ≥12 |
| SiO2 % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Apparent Porosity % | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crush Strength MPa | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 | >≥40 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1700 | |||||
