Description
Magnesia brick is an alkaline refractory brick made primarily from high-purity sintered magnesia or fused magnesia, manufactured through high-temperature sintering or chemical bonding processes. These bricks offer excellent high-temperature performance, corrosion resistance and strength, making them widely used in high-temperature industrial-especially in equipment exposed to molten metals or strongly alkaline environments.
Specification
| Item | Grade | ||||||
| M—98 | M—97A | M—97B | M—95A | M—95B | M—91 | M—89 | |
| ω(MgO)/%≥ | 97.5 | 97.0 | 96.5 | 95.0 | 94.5 | 91.0 | 89.0 |
| ω(SiO₂)/%≤ | 1.00 | 1.20 | 1.50 | 2.00 | 2.50 | — | — |
| ω(CaO)/%≤ | — | 2.00 | 2.00 | 3.00 | 3.00 | ||
| Apparent Porosity/%≤ | 16 | 16 | 18 | 16 | 18 | 18 | 20 |
| Bulk density/(g/cm³)≥ | 3.00 | 3.00 | 2.95 | 2.90 | 2.85 | ||
| Cold Crushing Strength /MPa≥ | 60 | 60 | 60 | 60 | 50 | ||
| 50 | 50 | 50 | 50 | 45 | |||
| Refractoriness Under Load / 0.2 MPa T0.6/℃≥ | 1700 | 1700 | 1650 | 1560 | 1500 | ||
| Permanent Linear Change on Heating/% | 1650℃×2h —0.2～0 | 1650 ℃×2 h —0.3～0 | 1600 ℃×2 h —0.5～0 | 1600 ℃×2 h —0.6～0 | |||
Product Size: We offer refractory brick sizes that comply with ISO, EN, ASTM, JIS, etc, and customized sizes.
Applications
Mainly used as lining material for steel-making furnaces, especially in converters and electric arc furnaces, and also applicable in industries such as lime and chemical.
Our services: refractory technicians, refractory installation drawings, refractory bricks and castables, refractory masonry services, refractory mixes and precast cell, special shaped bricks, insulation materials, installation supervision, accident investigation and resolution, other customized services.
