Customization: | Available |
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Natural Abrasive Type: | Natural Corundum |
Artificial Abrasive Type: | Corundum Abrasives |
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Refractory Abrasive Materials Brown Aluminium Oxide BFA
BFA/ Brown Fused is made of high-quality bauxite, iron filings and anthracite in high temperature arc. It is crushed and shaped by self-grinding machine, magnetically removed and sieved into various particle sizes. The main chemical composition is AL2O3, which is 94.5%- -97%, additionally containing a small amount of Fe, Si, Ti, and the like. Its texture is compact, high hardness, brown, toughness, and spherical shape. It is suitable for the manufacture of ceramics, resin high-density abrasives, grinding, polishing, sandblasting, precision casting, refractory materials, etc.
Main Technical Index | |
Shape | Sharp,Angular |
Color | Brown |
Crystalline system | Trigonal |
Mohs Hardness | 9 Mohs |
Vicker Hardness | 2200 kg/m2 |
True Gravity | 3.97g/cm3 |
Refracroriness | 1,900°C |
Melting Point | 2,250°C |
Chemical Index | AL2O3≥95% Fe2O3≤0.30% |
TiO2≤3.5% SiO2≤1.0% | |
Product Standard | China GB/T,FEPA etc. |
Al2O3 % | Fe2O3 % | SiO2 % | B.D g/cm3 |
MIN | MAX | MAX | MIN |
95 | 0.3 | 1.5 | 3.85 |
90 | 13 | 1.5 | 3.85 |
Size mm | 8-5,5-3,3-1,1-0 mm 200,280,325 mesh |
Brown Fused Alumina commonly used grain size
Brown Fused Alumina For Refractory materials: 0-1mm 1-3mm 3-5mm 5-8mm 200 # -0 325 #
Brown Fused Alumina For Abrasives: F24- F60
Brown Fused Alumina For Sandblasting: F10 -240
Brown Fused Alumina For Precision Casting: F80-100 F100-120
Brown Fused Alumina For Ceramic, electronic polishing category: F240-F800
Brown Fused Alumina Applications :
Brown Aluminum oxide section sand 0-1mm, 1-3mm, 3-5mm, 5-8mm is applicable for
Refractories, castables, refractory bricks
Brown aluminum oxide is of high purity, good crystallization, strong fluidity, low coefficient of linear expansion, high temperature resistance and corrosion resistance.Widely used in the manufacture of advanced refractory materials: