SILICON NITRIDE BRICKS USED IN COPPER SMELTING
1. Characteristic of silicon nitride bricks in copper smelting
High strength
Low thermal expansion coefficient
Good thermal conductivity and thermal shock resistance
Good resistance to liquid copper erosion capability
High erosion resistance
2. Applications of silicon nitride bricks
The silicon nitride bricks by nitriding has good resistance to copper liquid erosion, so the product has high strength, good corrosion resistance, good thermal shock and other properties, it is widely applicable to copper smelting furnace and other non-ferrous metal smelting.
3. Physical and Chemical Index of silcon nitride bricks
ITEM | INDEX | |
Lining brick | Special shape brick | |
SiC % ≥ | 70 | 70 |
Si3N4 % ≥ | 20 | 20 |
Porosity% ≤ | 17 | 18 |
Bulk density g/cm3 ≥ | 2.65 | 2.60 |
CCS MPa ≥ | 160 | 150 |
Cold bending strength MPa ≥ | 45 | 40 |
High temperature bending strength MPa ≥ | 50 | 45 |
4. Manufacture processing of nitride silicon bricks:
a.) Choose metal silicon as raw material, add additives, then mix.
b.) Put the mixture into the mold, then make embryoid by machine pressing.
c.) Be reaction sintered by nitrogen protection in electric furnace.
5. Packing details of silicon refractory bricks
a.) The finished silicon refractory bricks are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.
b.) We also pack products as custom request.
6.Delivery time
30 days for 1×20GP CMB
7. Lab equipment
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