yixing haiyu refractory co.,ltd
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carborundum abrasive first brown adamantine spar low iron content hardware grinding
Product name: section sand of brown fused alumina
Specification: 3-1#
Carborundum is also known as brown corundum. Brown corundum is an artificial abrasive with chemical composition of alumina. Its main materials are bauxite, coal and iron chips. After smelting above 2000 °C in high temperature electric arc furnace, the impurities in bauxite are removed, leaving brown alumina crystal blocks. Therefore, controlling the impurities in brown corundum has a direct impact on the quality performance index of brown corundum. The smelting equipment of brown corundum is divided into fixed furnace and dumping furnace. The alumina content in the brown corundum block will also vary according to different parts in the furnace.
MAIN APPLICATIONS
-Refractory materials, kiln feed, castable material, ramming material, refractory bricks, etc.
-Surface treatment, rust removal and oxidation layer removal.
-Abrasiveness material and tools, resin and ceramic abrasive wheels, cutting blade, abrasive cloth and belt.
-Sandblasting and water cutting of silicon materials such as poly-crystalline silicon and mono-crystalline silicon.
-Building ceramics, special ceramics, and process ceramics.
-silicon materials sandblasting.
-Silicon material sandblasting such as circuit board sandblasting, poly-crystalline silicon, mono-crystalline silicon.
-Industrial floor, sports ground, underground garage floor and other wear-resistant materials.
-The filter medium, which uses granular abrasive as the bottom medium of the filter bed to purify drinking water or wastewater, is a new type of water filter material.
VERAGE CHEMICAL COMPOSITION(TYPICAL)
| Al2O3 | Fe2O3 | Tio₂ | SiO2 |
| ≥95% | ≤0.3% | ≤0.3% | ≤1.5% |
PHYSICAL PROPERTIES(TYPICAL)
| Mohs hardness | Proportion | Melting point | Max. Working temperature | Crystalline form |
| ≥9.0 | ≥3.90g/cm3 | 2250℃ | 1900℃ | tripartite crystal system |
Composition standard of grit size GB/T 2479-2008
| Particle size | unit | guarantee value | typical value | |||||||
| 8-5mm | mm | +8.00 | -4.00 | +9.52 | +8.00 | +6.70 | +5.60 | +4.75 | -4.00 | - |
| % | 5 | 5 | 0 | 0-5 | 35-55 | 75-95 | 90-100 | 0-5 | ||
| 6-3mm | mm | +5.60 | -2.80 | +8.00 | +6.70 | +5.60 | +4.75 | +3.35 | +2.80 | -2.80 |
| % | ≤40 | ≤10 | 0 | 0-5 | 15-35 | 40-65 | 75-95 | 90-100 | 0-10 | |
| 5-3mm | mm | +4.75 | -2.80 | +5.6 | +4.75 | +3.35 | +2.80 | -2.80 | ||
| % | ≤10 | ≤10 | 0 | 0-10 | 60-80 | 90-100 | 0-10 | |||
| 3-1mm | mm | +2.80 | -1.0 | +4.75 | +3.35 | +2.80 | +2.00 | +1.18 | +1.00 | -1.00 |
| % | ≤10 | ≤10 | 0 | 0-5 | 1-10 | 30-50 | 70-90 | 90-100 | 0-10 | |
| 1-0mm | mm | +1.00 | -0.212 | +1.18 | +1.00 | +0.50 | +0.212 | -0.212 | ||
| % | ≤5 | ≤35 | 0 | 0-5 | 30-50 | 65-85 | 0-35 | |||
Particle size comparison sheet of brown fused alumina
| section sand of brown fused alumina | |||
|
Particle size number | (mm) Particle size range(mm) | Particle size number | (mm) Particle size range(mm) |
| 0-1# | 0-1mm | 5-8# | 5-8mm |
| 1-3# | 1-3mm | 8-12# | 8-12mm |
| 3-5# | 3-5mm | ||
