Brown Fused Alumina

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Brown Fused Alumina

Brown fused alumina is produced from high quality bauxite . This process is conducted via the 3500 KVA electric arc furnace at a temperature higher than 2200℃. The process of products :bauxite broken into crushing machine --- elevating -- roll crusher mill-- sizing ---magnetic separator ---fine sieve ---water washing (acid washing )---package (25kg/pp bag or paper bag ,40 bags / ton bag or pallet )

Our brown fused alumina covers two production lines. The F type is mainly used for producing resin cutting /grinding wheels and sand blasting. The P type is designed for coating abrasives. Raw materials are mainly acquired from Guizhou LuQian Alumina Fusing Factory. Currently, this producer is the only one in the northern of China to use ingot from XiuWen County,Guizhou Province to produce grain products of #16--#320,which is more suitable to be used in manufacturing vitrified and coated grinding tools

Grains Types and Grades
Usage For vitrified wheels For belts For sheets For Organic Wheels For Blasting
Type &Grade A A-P 1 A-P 2 A-B A-S
Size F: 4#-80# 90#-150# 180#-240# P: 8#-80# 100#-150# 180#-220# W: 1#-63#

Chemical composition
GB/T 2478-1996 CaO Typical Analysis
Type & Grade Grit Chemical Composition(%,by weight)
AL2O3 TiO2 CaO
A F4~F80 95.0~97.5 1.5~3.8 ≤ 0.45 0.25
F90~F150 94.0~97.5
F180~F220 93.0~97.5
F220 finer ≥ 92.0
A-P 1 P12~P80 95.0~97.5 1.5~3.8 ≤ 0.45 0.25
P100~P150 94.0~97.5
P180~P220 93.0~97.5
P220 finner ≥ 92.0
A-B F4~F80 ≥ 93.0 1.5~4.2   0.28
F90~F220 ≥ 91.0
F220 finner ≥ 90.0 ≤ 4.5
A-P 2 P8~P80 ≥ 93.0 1.5~4.5  
P100~P220 ≥ 91.0
P220 finner ≥ 90.0 ≤ 4.5
A-S 16~220 ≥ 92.0 ≤ 4.2  
Item 95 96 97
Al2O3 ≥95% ≥96% ≥97%
SiO2 ≤1.2% ≤1.0% ≤0.8%
TiO2 ≤3.2% ≤3.0% ≤2.0%
Fe2O3 ≤0.3% ≤0.2% ≤0.2%
CaO+ MgO ≤0.6% ≤0.5% ≤0.4%
Real Density ≥3.9 g/cm3
Moh's Hardness 9.0
Micro Hardness 2000-2200KG/MM2
Coarseness 8-5MM, 5-3MM, 3-1MM, 1-0MM
16# 24# 30# 36# 46# 60# 70# 80# 90# 100# 120#
Fines 180F 200F 240F 325F (Fe2O3 ≤0.50%)

Brown fused alumina of P type is commonly used for make ceramic grinding wheel, grinding stone, sand paper, sand belt, polish wax, abrasive paste, etc. Its F type can act as a sandblasting abrasive and is commonly used to decontaminate, remove dust, and prevent corrosion for select work pieces. Refractory material: Mainly used for abrasion and high temperature resiatant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy, various industrial stoves, electric furnace etc. In addition, the alumina can be used for construction , ideal for airports, chemical factories, and other similar locations. It is also the ideal candidate for precision casting of materials such as stainless steel and aluminum.

According to function, our alumina falls into five major categories including A, A-P 1, A-P 2, A-B, and A-S. Type A is used for ceramic abrasive, A-P 1 is used for abrasive belt, A-P 2 is used for coated abrasive, A-B is used for organic abrasive, and A-S is designed for sand-blast polishing. In addition, our brown fused alumina can be used for with a water jet dissector or other similar cutting systems to directly grind high-tensile metals such as cast iron, hard bronze, and annealed malleable iron. Apart from being used for manufacturing abrasive tools, it can also be used to produce high grade fireproof material.

Our company is an experienced brown fused alumina manufacturer and supplier in China. We provide a vast range of products, including green silicon carbide, metal cut off wheel, metal grinding wheel, grinding stone, and much more.

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