Black fused alumina, also known as low-aluminum corundum, is a gray-black crystal with α-Al2O3 and iron spinel as the main ore phase, which is obtained by melting aluminum bauxite in an electric arc furnace. It is characterized by low Al2O3 content. There is a certain amount of Fe2O3 (about 10%), so it has the characteristics of moderate hardness, high toughness, high temperature resistance and stable thermal performance. It is mostly used for free grinding, such as grinding and rough grinding before electroplating of products. It is mainly used for polishing and sand blasting of stainless steel, metal products, optical glass, bamboo and wood products, and is also a novel abrasive for manufacturing resin grinding wheels, cutting sheets and abrasive cloths.
Grains :F 36 46 60 80 70 100 120 Al2O3:95% min Brown fused alumina (BFA) is a type of synthetic abrasive which is made by fusing bauxite, iron oxide and coke at high temperatures in an electric arc furnace. It has a brown color and is used for grinding, polishing, blasting and cutting applications. BFA is known for its high hardness, toughness, and resistance to wear and corrosion. It is also chemically stable and does not react with acids or alkalis. These properties make it a popular abrasive for metalworking, surface preparation, and refractory applications. BFA is available in a range of grit sizes and can be used for both wet and dry blasting. It is commonly used for cleaning and preparing surfaces for painting or coating, removing rust and scale, and shaping and finishing metal parts. In addition to its abrasive properties, BFA is also used as a refractory material in the production of ceramics, glass, and cement. It is also used as a filler in plastics, rubber, and other composites. Package:25kg/bag,1000kg/jumbo bag
Grains :F 36 46 60 80 70 100 120 Al2O3:95% min Brown fused alumina (BFA) is a type of synthetic abrasive which is made by fusing bauxite, iron oxide and coke at high temperatures in an electric arc furnace. It has a brown color and is used for grinding, polishing, blasting and cutting applications. BFA is known for its high hardness, toughness, and resistance to wear and corrosion. It is also chemically stable and does not react with acids or alkalis. These properties make it a popular abrasive for metalworking, surface preparation, and refractory applications. BFA is available in a range of grit sizes and can be used for both wet and dry blasting. It is commonly used for cleaning and preparing surfaces for painting or coating, removing rust and scale, and shaping and finishing metal parts. In addition to its abrasive properties, BFA is also used as a refractory material in the production of ceramics, glass, and cement. It is also used as a filler in plastics, rubber, and other composites. Package:25kg/bag,1000kg/jumbo bag
Model: White fused alumina F46 Chemical compositions Al2O3: 99.53%min SiO2: 0.04%max Na2O: 0.26%max Fe2O3: 0.04%max Physical properties Color: White Bulk density: 1.75-1.95g/cm3 Grain density: 3.90g/cm3min Morse hardness: 9 Content of magnetic substance: 0.0023%max. 25kg PVC bags + 1MT big bag.
White Fused Alumina Oxide For Sandblasting abrasive is processed by high quality corundum from Ruishi Abrasive Plant as raw material and utilized unique advanced technology. It is characterized by short grinding time, high efficiency, good returns, low price and so on. In particular, its advantages such as high hardness, big specific gravity, good chemical stability and unique self-sharpening, it becomes the first choice for the sandblasting technics, meanwhile, it is also the ideal material for sandblasting and derusting, workpeice cleaning, and polishing. Packing:1 MT big bag or 25kg paper bag *40 bags on one pallet ; As per customers requirement We will provided FREE SAMPLE about 1kg
This kind of Brown Fused Alumina is mainly used for various material workpieces to decontaminate, Derusting, prevent corrosion, remove oxide skin, light-decorate, process pattern effect and so on. About Brown Fused Alumina for sandblasting: There are three factors the decide the effect of Brown Fused Alumina for sandblasting. 1. The grinding ability, the better for sandblasting. 2. The bulk density: the higher bulk density, the better for sandblasting. 3. The dust: the lower dust, the better for sandblasting. Brown Fused Alumina with high bulk density and air cleaned, the quality of this kind of Brown Fused Alumina is very excellent for sandblasting. We will provided FREE SAMPLE about 1kg Packing:1 MT big bag or 25kg paper bag *40 bags on one pallet ; As per customers requiremen
Black fused alumina (lower aluminium oxide abrasive)is a new type abrasive material for polishing various metal.Black aluminium oxide abrasive is featured with high hardness, strong tenacity, good self-sharpening, better cohesisness, higher durability, less heat generated in grinding and giving the metal works high finish, less power weakened in grinding.It is mostly used in grindin and polishing stainless steel, metal works , optical glass, bamboo or articles.And it is also the new grinding material of producing colophony grinding wheels, slice, and emery cloth. Grit size: 25kg/bag, 40bags/jumbo bag
Smelting of black fused alumina powder The smelting method of black fused alumina is basically same with smelting of brown corundum. The production method of black fused alumina is choosing high-quality bauxite, iron oxide and other raw materials, add other trace elements, carefully smelting in dumping-type electric arc furnace , to ensure that the massive black fused alumina block are top grade, less impurities, ,stable quality. This laid solid foundation for producing period of black fused alumina sand , grain size black fused alumina sand and black fused alumina powder that are of moderate hardness, good toughness, good using performance and stability quality. Prices of black fused alumina powder In the abrasive products, brown fused alumina, white fused alumina, black fused alumina are same in using bauxite as main raw material, add iron scrap in high-temperature electric arc furnace smelting, and why the price of black fused alumina is lower than price of brown fused alumina and black fused alumina , The price of aluminum in the market than the price of iron per ton to be much higher, brown fused alumina sand content of more than 95%, while the black fused alumina a sand content of aluminum oxide To 85%, we can see the same level of fused alumina aluminum content is much higher than black fused alumina, and fused alumina products in the most valuable component is alumina, therefore, the price of black fused alumina is much lower than white fused alumina and brown corundum.
White Fused Aluminium Oxide (WFA)� is widely used for Abrasive Tools, Sandblasting, Polishing, Surface Preparation. Our WFA is a hard, dense and iron-free material with highest purity, hence is an ideal abrasive material. It also has above 95% Al2O3 content, high degree of whiteness, extreme hardness and a wide range of precise grit sizes.
High Hardness White fused corundum for sandblasting polishing Wholesale white corindon for coated abrasives was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling.White corindon is white with the main crystal phase alpha-Al2O3.The White corindon produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved. Purpose: 1.Bonded abrasives and Coated abrasives 2.Floor/Wall Laminates 3.Thermal Spraying(Plasma Spraying) 4.Lapping & Micro-blasting applications 5.Surface preparation and finishing 6.Super Refractories,Ceramics and Tiles 7.Brake linings Available sizes; Grain: 0-1mm 1-3mm 3-5mm 5-8mm Fine powder: 0-100mesh 0-200mesh 0-320mesh Grit: 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# Micro powder: ï¼?FEPAï¼?F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 (JIS) #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 Chemical analysis: Al2O3(min) 99% SiO2(max) 0.4% Fe2O3(max) 0.2% Na2O(max) 0.4% Physical characteristics: color white Mohs Hardness 9.0 Melting point 2250 Bulk density 1.75-1.95g/cm3 Real density 3.95g/cm3
