SK-32 / SK-35Insulating shapes
JIS-seriesInsulation silica brick
Porous silica brick with more than 90% SiO₂, low density and high refractoriness under load.
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PRODUCT / JIS-series01 / APPLICATION
Application and operating zones
Hot-blast stoves for large blast furnaces and insulating layers in glass furnaces without slag contact.
02 / TYPICAL DATA
Technical specifications
PropertyTypical value
SiO₂91%
Maximum service temperature1450-1550°C
GRADE COMPARISON
Grades and technical properties
For each shipment, composition, geometry, and guaranteed properties are fixed in the specification and batch quality certificate.
| Grade | Bulk density | Cold crushing strength | Permanent linear change limit | Thermal conductivity @ 350°C | RUL @ T2 | SiO₂ |
|---|---|---|---|---|---|---|
| JIS1.0 | 1.0 g/cm³ | 3 MPa | 1450°C | 0.50 W/mK | 1400°C | 91% |
| JIS1.1 | 1.1 g/cm³ | 4 MPa | 1500°C | 0.60 W/mK | 1420°C | 91% |
| JIS1.2 | 1.2 g/cm³ | 5 MPa | 1550°C | 0.70 W/mK | 1520°C | 91% |
| JISM1.8 | 1.85 g/cm³ | 20 MPa | - | 0.20 W/mK | 1280°C | 80% |
Properties are shown as typical values. The operating grade and guaranteed values are selected for the service conditions and fixed in the supply specification.
