90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks
90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks are excellent for making fire bricks. Adding 90% 88% silicon carbide grain & powder to SiO2-SiC brick, corundum-silicon carbide brick, and silicon carbide-graphite bricks can improve the performance of firebricks. That can enhance the thermal stability, increase thermal conductivity, and improve the hardness of firebricks.
90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks Features:
- Good wear resistance and wear resistance. Black silicon carbide itself is a good wear-resistant material. It can not only withstand the erosion of flowing high-temperature molten iron in the field of refractory materials but also has high high-temperature thermal shock resistance. The Vickers hardness of silicon carbide at room temperature is 3100-3200kg/mm2, which slightly decreases at high temperatures. However, even at 1200 degrees, it can still maintain a microhardness of 950-1000kg/mm2.
- High refractory temperature. The melting point of black silicon carbide is 2600 ℃. It is free at a high temperature of 2300 ℃, with a working temperature of up to 1850 ° C. It can maintain good high-temperature and physicochemical properties at a high temperature of 1600 ℃.
- Oxidation resistance: When the black silicon carbide casting material is within 1400 ℃, a silicon dioxide film will be formed on the outside of the particles to prevent further oxidation of silicon carbide. Made into refractory products, they can resist the erosion of oxidizing media such as oxygen and water vapor.
- Corrosion resistance: Black silicon carbide has excellent acid and alkali resistance. It can effectively resist the erosion of corrosive substances such as slag and metal oxides.
- High thermal conductivity: Black Silicon carbide has good thermal conductivity, and the heat inside the furnace can be evenly distributed and quickly transmitted. Thus it improves the thermal efficiency of furnace equipment.
90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks Physical indexes:
| Hardness(Mohs scale) | 9.2 |
| Melting Point: | dissociated at about 2300 °C |
| Maximum service temperature: | 1900℃ |
| Specific Gravity: | 3.2-3.45 g/cm3 |
| Bulk density(LPD): | 1.2-1.6 g/cm3 |
| Color: | Black |
| Particle shape: | Hexagonal |
| Modulus of Elasticity | 58-65×106 psi |
| Coefficient of Thermal Expansion | 3.9-4.5 x10-6/ ℃ |
| Thermal Conductivity | 71-130 W/MK |
Chemical content：
| Spec. | Purity | F.C | Fe2O3 | Moisture |
| SiC86 | ≥86% SiC | ≤2.4% | ≤ 2.0% | ≤ 0.2% |
| SiC88 | ≥ 88% SiC | ≤ 2.3% | ≤ 2.0% | ≤ 0.2% |
| SiC90 | ≥ 90% SiC | ≤ 2.0% | ≤ 1.8% | ≤ 0.2% |
| SiC92 | ≥ 92% SiC | ≤ 1.8% | ≤ 1.7% | ≤ 0.2% |
| SiC93 | ≥93% SiC | ≤ 1.8% | ≤ 1.6% | ≤ 0.2% |
| SiC95 | ≥ 95% SiC | ≤ 1.0% | ≤ 1.3% | ≤ 0.2% |
| SiC97 | ≥ 97% SiC | ≤ 0.8% | ≤ 1.2% | ≤ 0.2% |
| SiC97.5 | ≥97.5% SiC | ≤ 0.8% | ≤ 0.9% | ≤ 0.2% |
| SiC98 | ≥ 98% SiC | ≤ 0.5% | ≤ 0.5% | ≤ 0.2% |
Specifications:
| Black silicon carbide sand size | Particle size distribution |
| 0-1mm | +1mm 10% max |
| 0.2-0.5mm | -0.2mm 10% max +0.5mm 10% max |
| 1-2mm | -1mm 10% max +3mm 10% max |
| 1-3mm | -1mm 10% max +3mm 10% max |
| 3-5mm | -3mm 10% max +5mm 10% max |
| 0-60F | +0.250mm 10% max |
| 100F | +0.150mm 10% max |
| 200F | +0.075mm 10% max |
| 325F | +0.045mm 10% max |
Customized sizes are available upon request.
90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks Application：
- Castable and repair materials for kiln equipment in the steel, glass, power, chemical, and ceramic industries. Such as high-temperature kilns in steelmaking furnaces, ironmaking furnaces, and steel ladles. Nonferrous metal smelting kilns and converters. Glass furnaces, ceramic tunnel kilns, and shuttle kilns. Rotary kilns and gypsum kilns for cement and other building materials. High-temperature equipment such as catalytic cracking furnaces and gasifiers.
- Ceramic fillers and aggregates for refractory ceramic parts and thermal components.
- Deoxidizer for steelmaking furnace.
- Unshaped refractory materials and shaped refractory materials. Such as fire bricks &tiles in the heat exchanger. Tiles and Mortars in blast furnace, steel ladle, Crucibles, etc.
- Thermal resistance foamglass, etc.
90% 88% Silicon carbide aggregate 0-1mm 1-2mm for fire bricks Production:
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