SK-32 / SK-35Shaped refractories
JC-30 / DN-12Special fireclay brick
Low-porosity, low-iron fireclay brick made with selected chamotte and mullite for improved high-temperature service.
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PRODUCT / JC-30 / DN-1201 / APPLICATION
Application and operating zones
Reheating, rotary, glass and non-ferrous furnaces, incinerators and general industrial units.
02 / TYPICAL DATA
Technical specifications
PropertyTypical value
Al₂O₃30-45%
Apparent porosity13-17%
Cold crushing strength50-70 MPa
GRADE COMPARISON
Grades and technical properties
For each shipment, composition, geometry, and guaranteed properties are fixed in the specification and batch quality certificate.
| Grade | Refractoriness (SK) | Apparent porosity | Bulk density | Cold crushing strength | RUL @ 0.2 MPa | Al₂O₃ | Fe₂O₃ |
|---|---|---|---|---|---|---|---|
| JC-30 | 30 | 15% | 2.26 g/cm³ | 50 MPa | 1250°C | 30% | 2.0% |
| JC-40 | - | 14% | 2.32 g/cm³ | 70 MPa | 1300°C | 40% | 1.8% |
| DN-17 | 34 | 17% | 2.25 g/cm³ | 50 MPa | 1430°C | 42% | 1.7% |
| DN-14 | 34 | 14% | 2.34 g/cm³ | 65 MPa | 1470°C | 45% | 1.5% |
| DN-12 | 35 | 13% | 2.40 g/cm³ | 70 MPa | 1500°C | 45% | 1.3% |
Properties are shown as typical values. The operating grade and guaranteed values are selected for the service conditions and fixed in the supply specification.
