Brown aluminum oxide is bauxite, coke (anthracite) as the main raw materials, in the arc furnace by high temperature smelting, with it made of abrasive tools, suitable for grinding high tensile metal, such as a variety of general steel, malleable cast iron, hard bronze, etc., can also manufacture high-grade refractory materials.
The main component of brown corundum is alumina, and the classification is differentiated by aluminum content, and the lower the aluminum content, the lower the hardness.
The product particle size is produced according to international standards and national standards, and can be processed according to user requirements. The general particle size is F4~F320, and its chemical composition varies depending on the particle size. The outstanding feature is that the crystal size is small and impact resistant, because of the grinding machine processing, the particles are mostly spherical particles, the surface is dry and clean, and it is easy to bind the binder.
Brown corundum is known as the teeth of industry: mainly used in refractory materials, grinding wheels, sandblasting.
1. Sandblasting brown aluminum oxide - sandblasting abrasive hardness moderate, high density, no free silica, significant, good toughness, Aokai brown corundum is the ideal "environmental protection" type sandblasting material, widely used in aluminum, copper profile glass, washed jeans precision mold and other fields;
2. Free grinding - grinding grade abrasives, used in picture tube, optical glass, monocrystalline silicon, lens, watch glass, crystal glass, jade and other fields of free grinding, is widely used in the domestic advanced grinding materials;
3. Resin abrasives - abrasives have suitable color, good hardness, toughness, suitable particle section type and cutting edge retention, applied to resin abrasives, the effect is ideal;
4. Coated abrasives - abrasives are the raw materials of sandpaper, gauze and other manufacturers;
5. Brown aluminum oxide functional fillers - mainly used for automotive braking parts, special tires, special building products, etc. can be used as wear-resistant materials to build highway pavement, airstrip, dock, parking lot, industrial floor, sports field, etc.;
6. Filter media - is a new application field of abrasives, using granular abrasive as the bottom medium of the filter bed to purify drinking water or wastewater, is a new type of water filtration material at home and abroad, especially suitable for non-ferrous metal beneficiation, oil drilling mud weighting agent:
7. Abrasive hydraulic cutting - using abrasive as cutting medium, relying on high-pressure hydraulic jet for basic cutting, applied to oil (natural gas) pipelines, steel and other parts of the cutting, is a new, environmentally friendly, safe cutting method. Customer base: Washing factory Denim sandblasting workshop Shipyard repair shipyard Steel structure factory Micro-powder factory Abrasive Wheel factory Sandpaper, emery factory Crystal Glass Industry Building floor industry Steel Industry Hardware industry Electronics Industry Car Manufacturing Coastal Wharf, Parking Hospital Stadium. Sandblasting industry and other cooperation to meet the needs of various users of floor aggregates and abrasives.
Products reliable, stable performance, good quality, easy to use.
(1) Due to high temperature resistance, corrosion resistance, high strength and other properties, it is used to pour steel sliding nozzle, smelting rare metals, special alloys, ceramics, iron blast furnace lining (wall and pipe); Physical and chemical utensils, spark plugs, heat resistant and oxidation resistant coating.
(2) Due to the characteristics of high hardness, good wear resistance and high strength, in the chemical system, it is used as a variety of reaction vessels and pipelines, chemical pump components; Do mechanical parts, all kinds of molds, such as wire drawing die, extrusion pencil core die mouth, etc.; Do tools, mold abrasives, bulletproof materials, human joints, sealing mold rings, etc.
(3) Corundum insulation materials, such as corundum light bricks, corundum hollow balls and fiber products, are widely used in various high temperature furnace walls and furnace tops, both high temperature resistance and heat insulation. Brown corundum particle size sand is manually selected by the brown corundum block, using roller, ball mill, Barmack and other equipment processing, granularity from F8-F325. Mainly used for polishing, grinding, industrial grinding, etc., can also be washed according to customer requirements, pickling and other methods of processing, to meet the different needs of customers.
Low carbon brown aluminum oxide after the furnace and special process of reprocessing, reduce the content of residual carbon in brown corundum, so that the product in the use of no powder, no explosion, toughness is the first choice of abrasive tools industry, refractory industry. Mainly used for ceramic abraded tools, high-grade abraded tools, organic abraded tools, abrasive belt, coated abraded tools, etc. According to the residual carbon content, it is divided into: calcined brown corundum C ≤0.05%, low-carbon brown corundum C ≤0.10%, ordinary brown corundum C ≤0.15%.
Brown corundum with high quality bauxite as raw materials, anthracite, iron xiao, in the arc by more than 2000 degrees of high temperature melting made, by grinding and shaping machine, magnetic separation of iron, sieve into a variety of granularity, its dense texture, high hardness, pellet formation ball, suitable for manufacturing ceramic, resin high consolidation abrasives and grinding, polishing, sandblasting, precision casting, etc. It can also be used to manufacture high-grade refractory materials.
Brown corundum has the characteristics of high purity, good crystallization, strong fluidity, low coefficient of linear expansion and corrosion resistance. Through the practice of dozens of refractory production enterprises, the product has the characteristics of no initiation, no pulverization and no cracking in the application process. In particular, its cost performance is much higher than that of traditional brown corundum, which makes it the best aggregate and filler for brown corundum refractory materials.
Where is the difference between white and brown corundum? White corundum is made of high quality aluminum oxide powder as raw material, which is crystallized by electromelting. It has high purity, good self-sharpness, acid and alkali corrosion resistance, high temperature resistance and stable hot state performance. White corundum hardness is slightly higher than brown corundum, toughness is slightly lower, high purity, good self-sharpness, strong grinding ability, small heat, high efficiency, acid and alkali corrosion resistance, high temperature thermal stability.
Abrasive tools made of white corundum grit sand are suitable for grinding fine grit abrasives such as high carbon steel, high speed steel and stainless steel, and white corundum can also be used for precision casting and high-grade refractory materials. White corundum sand: 0-1mm 1-3mm 3-5mm 5-8mm physical and chemical indexes: Al2O3≥99% Na2O≤0.5% CaO ≤0.4% magnetic material ≤0.003%. Brown corundum is bauxite, anthracite, iron chips as the main raw materials, in the arc furnace by high temperature smelting, brown, good toughness, microhardness 1800-2200Kg/mm2, volume density ≥3.85g/cm3, high temperature resistance, refractoriness up to 1850℃, can be used as refractory material, but also used as abrasive.
