SK-32 / SK-35Basic refractories
JMB92 / JMB98Magnesia brick
Brick made from dense dead-burned or fused magnesia with high refractoriness and basic-environment resistance.
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PRODUCT / JMB92 / JMB9801 / APPLICATION
Application and operating zones
Glass regenerators, lime and non-ferrous furnaces, EAFs, iron mixers and ferroalloy furnaces.
02 / TYPICAL DATA
Technical specifications
PropertyTypical value
MgO92-97.5%
Bulk density2.90-3.00 g/cm³
GRADE COMPARISON
Grades and technical properties
For each shipment, composition, geometry, and guaranteed properties are fixed in the specification and batch quality certificate.
| Grade | MgO | CaO | SiO₂ | Bulk density | Apparent porosity | Cold crushing strength | RUL @ 0.2 MPa |
|---|---|---|---|---|---|---|---|
| JMB92 | 92% | 2.5% | 3.5% | 2.90 g/cm³ | 18% | 55 MPa | 1550°C |
| JMB95 | 95% | 2.0% | 2.5% | 2.95 g/cm³ | 16% | 60 MPa | 1650°C |
| JMB97 | 97% | 1.6% | 1.2% | 3.00 g/cm³ | 15% | 70 MPa | 1700°C |
| JMB98 | 97.5% | 1.2% | 0.6% | 3.00 g/cm³ | 15% | 80 MPa | 1700°C |
Properties are shown as typical values. The operating grade and guaranteed values are selected for the service conditions and fixed in the supply specification.
