The main raw materials of white corundum and brown corundum are alumina, but the alumina content of white corundum is higher than that of brown corundum. (The alumina content of white corundum is above 99%, and that of brown corundum is between 95% and 97%. )

Use:

White corundum

1, surface treatment: metal oxide layer, carbide black skin, metal or nonmetal surface rust removal, such as gravity die casting mold, rubber mold oxide or release agent removal, ceramic surface black spots, uranium color removal, paint regeneration.

2. Beautifying processing: matte processing of all kinds of gold, K-gold ornaments and precious metal products, matte processing of non-metals such as crystal, glass, ripple and acrylic, and the surface of the processed products has metallic luster.

3. Etching: an artist who etches jade, crystal, agate, semi-precious stones, seals, yashi, antiques, marble tombstones, ceramics, wood and bamboo chips.

4. Pretreatment: Teflon, PU, rubber, plastic coating, cots, electroplating, metal spray welding, titanium plating, etc. , to increase the surface adhesion.

Burr processing: bakelite, plastic, zinc, aluminum die casting, electronic parts, magnetic cores, etc.

6. Stress relief: stress relief, rust removal, paint removal, extinction and renovation of parts in aerospace, national defense and precision industries.

Brown corundum

1, which is used to manufacture advanced refractories, castables, refractory bricks, etc.

2. Sandblasting-Abrasive has moderate hardness, high bulk density, high specific gravity and good toughness, and is an ideal "environment-friendly" sandblasting material, which is widely used in aluminum profile, copper profile glass, precision mould for washed jeans and other fields;

3. Abrasive-free abrasive is widely used in kinescope, optical glass, monocrystalline silicon, lens, watch glass, crystal glass, jade and other fields.

4. Resin abrasive-The abrasive has the right color, good hardness, toughness, suitable particle cross-section type and blade retention, and the effect is ideal when applied to resin abrasive;

5, coated with abrasives-abrasives are raw materials for manufacturers such as sandpaper and gauze;

6. Functional fillers-mainly used for automobile brakes, special tires, special building products, etc. It can be used as a wear-resistant material for building roads, airstrips, docks, parking lots, industrial floors, stadiums, etc. in expressway.

; 7. A new field of abrasive application-filter media. Granular abrasive is used as the bottom medium of filter bed to purify drinking water or wastewater. It is a new type of water filtration material at home and abroad, especially suitable for mineral processing of non-ferrous metals: weighting agent for oil drilling mud;

8. Hydraulic cutting-It is a new, environmentally-friendly and safe cutting method, which uses abrasive as cutting medium and relies on high-pressure hydraulic jet for basic cutting, and is applied to cutting oil (natural gas) pipelines, steel and other parts.

White corundum is suitable for high-end users, and brown corundum is suitable for mass users.

density

White corundum: true density? 3.90 g/cm3? Bulk density: 3.60g/cm3.

Brown corundum: true density: ≥3. 90 (g/cm3) Volume density: 3.85g/cm3.