Magnesia Refractory Bricks are high-temperature resistant bricks made primarily from magnesia (MgO), offering excellent resistance to basic slags and high thermal stability.
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info@rsrefractories.comMagnesia Refractory Bricks are manufactured using high-purity magnesite and advanced firing technology to achieve outstanding thermal resistance and durability. With MgO content typically above 90%, these bricks provide superior resistance to basic slags, strong mechanical strength at high temperatures, and excellent dimensional stability. They are widely used in demanding industrial furnaces, especially where corrosion from basic environments is severe. Their combination of chemical resistance, thermal shock performance, and long service life makes them ideal for steel, cement, and non-ferrous metallurgical applications.
| Items | Physical and Chemical characters | ||||||
| M-98 | M-97A | M-97B | M-95A | M-95B | M-97 | M-89 | |
| MgO % ≥ | 97.5 | 97.0 | 96.5 | 95.0 | 94.5 | 91.0 | 89.0 |
| SiO2 % ≤ | 1.00 | 1.20 | 1.5 | 2.0 | 2.5 | - | - |
| CaO %≤ | - | - | - | 2.0 | 2.0 | 3.0 | 3.0 |
| Apparent Porosity % ≤ | 16 | 16 | 18 | 16 | 18 | 18 | 20 |
| Bulk Density g/cm3 ≥ | 3.0 | 3.0 | 2.95 | 2.90 | 2.85 | ||
| Cold Crushing Strength MPa ≥ | 60 | 60 | 60 | 60 | 50 | ||
| 0.2Mpa Refractoriness Under Load ℃≥ | 1700 | 1700 | 1650 | 1560 | 1500 | ||
| Permanent linear change % | 1650℃×2h -0.2~0 | 1650℃×2h -0.3~0 | 1600℃×2h -0.5~0 | 1600℃×2h -0.6~0 | |||
Magnesia Refractory Bricks are widely used in:
Steelmaking furnaces (EAF, BOF, ladles)
Cement rotary kilns and cooler zones
Non-ferrous metal smelting furnaces
Glass tank regenerators
Lime and dolomite kilns
Comprehensive Refractory Product Range
We manufacture 3 main types of refractory materials — refractory castables, high alumina cement, and refractory bricks — covering 100+ industrial furnace types worldwide.
Certified Quality and International Standards Compliance
All batches undergo strict quality control. Products comply with ISO, ASTM, and GB standards, ensuring reliable performance in high-temperature industrial applications.
Annual Production Capacity of 130,000 Tons
With a large-scale capacity of 130,000 tons per year, we guarantee stable supply and on-time delivery for long-term and large-volume projects.
Exported to 120+ Countries and 1,000+ Projects
Our products have been successfully delivered to over 120 countries, supporting more than 1,000 industrial projects, including cement, steel, incineration, glass, and petrochemical furnaces.
20+ Years of Experience in Refractory Manufacturing
With over 20 years of experience, we understand real furnace conditions and deliver materials proven in long-term industrial operations worldwide.
Professional Technical Support and Free Samples
We provide technical assistance from material selection to installation guidance, with free samples available for testing and supporting 1,000+ projects globally.
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