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Luoyang Tianzhen Refractory Co., Ltd.
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silicon nitride-bonded silicon carbide
1. Performance of silicon nitride-bonded silicon carbide
High strength
Low thermal expansion coefficient
Good thermal conductivity and thermal shock resistance
Good resistance to liquid aluminum erosion capability
High erosion
2. Chemical & Physical Specification of silicon nitride-bonded silicon carbide
Index | Al electrolysis cell block | Kiln furniture brick | Pipe | |
SIC, % ≥ | 72 | 70 | 70 | |
Si3N4, % ≥ | 20 | 20 | 20 | |
Fe2O3, % ≤ | 0.7 | 0.7 | 0.7 | |
Bulk Density, g/cm3 ≥ | 2.62 | 2.60 | 2.55 | |
Apparent Porosity, % ≤ | 17 | 18 | 20 | |
Cold Crushing Strength, Mpa ≥ | 150 | 140 | 120 | |
MOR, Mpa | Room temp. ≥ | 42 | 40 | 35 |
1400°Cx0.5hrs ≥ | 45 | 45 | 40 | |
Refractoriness Under Load (0.2Mpa,0.6%), °C ≥ | 1700 | 1700 | ---- | |
Thermal Shock Resistance (Water quenching at 1100), cycle ≥ | 30 | 30 | ---- | |
3. Typically Application of silicon nitride-bonded silicon carbide :
1.) Side wall Electrolyzer cell chemical-industrial reaction pot.
2.) Used as Kiln shed board, slide push board, sagger, Tuyere combined bricks.
3.) Used in blast furnace belly, Bosh and lower stack, cooling wall, rubbish burning furnace and boiler