Alumina Powder

Purity is 99.99% The 99.99% alumina powder (4 N) produces has as three different phase states α,θ and γ. The primary particle average size is 40 nm and the particle size distribution (D50) can be adjusted between 1-40 µm depending on clients's demands. Application for : Tricolor Phosphor, Long Afterglow Phosphor, YAG Phosphor, Synthetic Stone Luminous powder

1.Brown Fused Alumina is fused and crystallized under the high temperature of above 2250 degree centigrade with high quality bauxite,carbon and iron as raw material. Our product characterized by high purity,good crystal,strong fluidity,low coefficient of linear expansion,good corrosion-resistance and so on.Could not burst,no pulverization and crack in using course of refractory. 1.Place of original: HENAN 2.Material:AI2O3 3.Real Density: 3.9g/m3 4.Bulk density: 1.53-1.99g/m3 5.Melting point: 2250 6.Refractoriness:1900 7.Mohs hardness: 9.0 8.Usage: abrasive/blasting/polishing/refractory 9.Packages: 25kg PPbag, 1MT Jumbo bag, pallet, 25kg paper bag or  as customer's requirement. 10.Certificate: ISO9001, 11.Sampla: free 12.MOQ: 25ton 13.Color: Brown Supply Ability 3500 Ton/Tons per Month.

High-Performance Calcined Alumina Powder a- Al203 has good high temperature performance, Calcined Alumina Powder is widely used in ceramic industry, monolithic refractories and shaped refractories products. According to the degree of grinding and crystal size, Calcined Alumina Powder plays the different roles in ceramics and refractory industry. 1. Increase the content of alumina in the using of natural raw material formula in order to improve the refractoriness and mechanical properties. 2. Increase the amount of fine powder accumulate in order to improve the mechanical strength and wear resistance. 3. Through the reaction with binder such as cement into the stability of high refractoriness, and excellent reting matrix. a- Alumina Powder chemical and physical composition: Composition Specification Al203 Fe203 Na20 Si02 a-Al203 True Specific Gravity High Temperature Calcined Low Temperature Calcined By optimizing the particle accumulation to reduce water added in monolithic refractories

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.

Brief introduction of brown fused alumina powder Brown fused alumina uses bauxite, coke as the main raw material, smelting in the electric arc furnace at high temperature. The composition of brown corundum mainly include AL2O3, TiO2, also contains a small amount of SiO2 and Fe2O3, micro hardness is HV1800-2200. The toughness is lower than silicon carbide, higher than that of white corundum, hardness is 9.0, slightly lower than the same level of white fused alumina. Commonly used brown fused alumina can be divided into brown fused alumina powder, brown fused alumina segment of sand,brown fused alumina granular sand. Today, I mainly explain the brown fused alumina powder related knowledge for you. Brown fused alumina powder specifications: Commonly used brown fused alumina powder specifications: 325,400,600,800,1000. . . . (Head) Gongyi Qingyun Refractories Co., Ltd. can adjust production according to customer requirements? brown fused alumina powder brown fused alumina powder Properties of brown Alumina powder The brown fused alumina powder has moderate hardness, high toughness, good self-sharpening ability, low sand consumption and recyclable use, good abrasion and abrasion resistance, and chemical composition stability, abrasion resistance, acid and alkali resistance. Especially its high hardness, specific gravity large, chemical stability and its unique self-sharpening, etc., so used as the first choice in brown fused alumina abrasive sandblasting process , but also the best choice for cleaning up the work piece. Abrasives made of brown fused alumina powder , suitable for processing a variety of general steel, malleable iron, hard bronze, etc., can also produce high-grade refractories. Brown fused alumina abrasive use high-quality brown fused alumina as raw materials, using modern new unique technology from refining.Brown fused alumina sandblasting has characteristics of short grinding time, high efficiency, good efficiency and low price. The abrasive shell-shaped fracture, sharp edges and corners, in the crushing classification in the formation of new edges and edges, so that the grinding ability is better than other abrasives.

BFA brown fused alumina powder for Grinding stone Brown aluminum oxide crystals is made of bauxite/anthracite coal, and smelted in electric-arc furnace of high temperature more than 2000degrees.Abrasives tools made by brown fused alumina are suitable for metal with high tensile (like:steel, malleable iron, bronze etc).and suitable for grinding, polishing, blasting, precision casting etc.Brown aluminum oxide crystal is also used for refractory material. Brown aluminum oxide crystals with characteristics like: high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion resistance, high temperature, high strength. Chemical analysis: Al2O3(min) 92% SiO2(max) 2% Fe2O3(max) 2% TiO2(max) 4% Physical characteristics: color Brown Mohs Hardness 9.0 Melting point 2250â?? Maximum service temperature 1850â?? Bulk density 1.53-1.99g/cm3 Specific gravity 3.6-3.9g/cm3 Purpose: 1.grinding for konescope/glass/monocryst alline silicon/lens/jadeware 2.abrasion-proof material for expressway/airstrip/dock/ parking lot/stadium 3.bonded abrasives and coated abrasives 4.surface preparation and finishing 5.Thermal Spraying(Plasma Spraying) 6.Super Refractories, Ceramics and Tiles 7.Lapping & Micro-blasting applications Other models: 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 (FEPA)F230 F240 F280 F320 F360 F400 F500 F600 F800 (JIS) #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000

White fused alumina powder 1200 microgrit White fused alumina powder microgrit was made from the high quality alumina by melting above 2000 °C in the electric arc furnace and cooling. White fused alumina powder microgrit is white with the main crystal phase alpha-Al2O3.The white fused alumina powder microgrit 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. Chemical Compositions AL2O3: 99.2%min Fe2O3: 0.07%max Na2O: 0.30%max SiO2: 0.15%max Physical Properties Bulk Density: 1.78g/cm3 True Denstiy: 3.95g/cm3 Mohs Hardness: 9.0 Micro Hardness: 21600-22600kg/mm3 Melting Point: 2250 °C Application 1.Bonded abrasives and coated abrasives 2.floor/wall laminated 3.Thermal spraying(plasma spraying) 4.lapping & micro-blasting applications 5.optical glass polishing

BFA Brown Fused Alumina powder in refractory Brown corundum micro powder is produced by a reduction fusion of high quality bauxite in electric arc furnaces. It is both a hard and tough material with high strength, making it an excellent abrasive grain for applications.Its thermal properties make it an excellent raw material for abrasive and refractory applications. Advantages Of Brown Corundum Powder: 1. Large crystal, high strength, good toughness, dense texture, high bulk density. 2. Stable performance between batches. 3. The higher grinding efficiency and polishing brightness, the grinding efficiency is much higher than the soft abrasives such as silica. 4. Good particle appearance, high surface finish of the polished object. Product Parameter Grains Specifications And Composition JIS 240#,280#,320#,360#,400#,500#,600#,700#,800#,1000#,1200#,1500#,2000#,2500#,3000#,3500#,4000#,6000#,8000# European standard F240,F280,F320,F360,F400,F500,F600,F800,F1000,F1200,F1500 National standard W63,W50,W40,W28,W20,W14,W10,W7,W5,W3.5 Applications High Quality Brown Fused Alumina Powder for Precision Casting Bfa Brown Fused Alumina Powder in Refractory 1.Grinding and polishing of stainless steel, optical glass, bamboo or other materials. 2.For polishing various spare parts: bicycles, sewing-machine, hard metal tools, medical apparatus, timepieces, glass products and stone grinding. 3.For making abrasive tools: fiber-reinforced cutting wheels, grinding wheels, sand cloth, paper and paste. High Quality Brown Fused Alumina Powder for Precision Casting Bfa Brown Fused Alumina Powder in Refractory

Brown corundum micro powder takes the high-quality bauxite ore in deep underground as the raw material, produced by 24 hours uninterrupted high-current high-temperature smelting, cooling and crystallization. The conversion rate of the �±-Al2O3 is over 99%, can be produced according to JIS, European Standard, National Standard, or according to customers special requirements.