BROWN FUSED ALUMINA INTORDUCTION

- Oct 12, 2017 -


BROWN FUSED ALUMINA INTRODUCTION 

Brown fused alumina, also known as carborundum, is made from bauxite and petroleum coke as raw material, melting in an electric arc furnace at a high temperature of 2200℃. It is a brown hexagonal crystal with a hardness of mosh 9.

Application

  • Brown fused alumina is called as the teeth of industry, it is widely used in refractory material, sandblasting, free grinding, resin abrasives, coated abrasives, waterjet cutting, water filtration and function filter, etc.

  • Brown fused alumina for lapping and polishing process.

  • Brown fused alumina for producing mold of precision casting.

Physical Index of Brown Fused Alumina

ColorBrown
Basic Mineralα-AI2O3
True Density3.90g/cm3
Bulk Density1.68-1.95g/cm3
Mosh hardness9.0
MicrohardnessHV1800-2200

Chemical Composition of Brown Corundum Typical Value:

AI2O395.88%
TiO22.50%
SiO20.80%
Fe2O30.09%

Abrasives Grade

Grit sizeAI2O3TiO2SiO3Fe2O3
F12-F80>96.0%1.50-3.50%1.3%0.3%
F90-F150>95.2%
F180-F220>95.0%
F220 Finer>93.0%

Refractory Grade

Grade sizeAI2O3TiO2SiO2Fe2O3
0-1mm>95.2%>3.5%>1.0%>0.2%
1-3mm
3-5mm
5-8mm
200mesh>95.0%>3.5%>2.0%>0.4%
325mesh

 

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