White corundum for ceramics 80 mesh 100 mesh 120 mesh white emery
The color is white, and the hardness is slightly higher than that of brown corundum,High purity,Good self-sharpening, strong grinding ability,Low calorific value,High efficiency,Acid and alkali corrosion resistance,High temperature resistance, good thermal stability. Suitable for precision casting, refractory materials, grinding, sandblasting, polishing materials, spraying materials, chemical catalyst carriers, special ceramics, etc.
The production process of white corundum
White corundum is made of high-quality aluminum oxide powder as the main raw material, which is smelted at high temperature in an electric arc furnace.
White corundum powder is made of high-quality aluminum oxide powder as the main raw material, smelted at high temperature in the electric arc furnace to form white corundum blocks, crushed to small pieces by jaw crusher, ball mill for secondary crushing to make the particles smaller, and then through pickling to remove impurities, siphon segmentation, stirring and precipitation on time to extract different models, and then through precipitation drying and sieving loose.
Physical properties of white corundum
Mohs hardness | 9.0 |
Bulk density | 1.75-1.95g/cm³ |
True density | 3.95g/cm³ |
Bulk density | 3.6 |
melting point | 2250℃ |
Maximum operating temperature | 1900℃ |
Chemical composition and chemical content of white corundum
Al2O3 | Fe2O3 | Na2O | SiO2 | |
Segment sand | 99.5% | 0.04% | 0.06% | 0.3% |
powder | 99.0% | 0.1% | 0.08% | 0.35% |
grain size sand | 99.5% | 0.04% | 0.04% | 0.23% |
Micropowder | 99.2% | 0.06% | 0.08% | 0.35% |
The use of white corundum: derusting, decontamination, and descaling of iron workpieces, increasing the adhesion of coatings and coatings; descaling of aluminum workpieces, surface strengthening, and light decoration; descaling and matte effects of copper workpieces , glass products, crystal matte, engraved patterns, plastic products with matte effect, denim and other special fabric plush processing and effect patterns .
- Surface processing: metal oxide layer, carbide black skin, metal or non-metal surface rust removal, such as gravity die-casting mold, rubber mold oxide or release agent removal, ceramic surface black spots, uranium color removal, painting Rebirth.
- Beautification processing: all kinds of gold,K gold jewelry, matte or matte treatment of precious metal products, matte processing of crystal, glass, corrugated, acrylic and other non-metallic materials, and can make the surface of processed objects into a metallic luster.
- Etching process: jade, crystal, agate, semi-precious stones, seals, elegant stones, antiques, marble tombstones, ceramics, wood, bamboo etc.
- Pre-processing: Teflon (TEFLON ), PU , rubber, plastic coating, rubber roller ( ROLLER ), electroplating, metal spray welding, titanium plating and other pre-treatments to increase surface adhesion.
- Burr processing: removal of burrs from bakelite, plastic, zinc, aluminum die-casting products, electronic parts, magnetic cores, etc.
- Stress relief processing: stress relief processing for aerospace, national defense, and precision industry parts, rust removal, paint removal, matting, and renovation.
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