Brown Fused Alumina Introduction

Brown fused alumina takes the high quality bauxite as the raw material, mixing with iron powder and anthracite, produced by melting in the electric arc furnace at a high temperature over 2000℃.Main chemical compositions are Al₂O₃, TiO₂, and small amount of SiO₂ and Fe₂O₃ etc. Toughness is higher than SiC. It has features of good crystallization, high hardness, low linear expansion coefficient and corrosion resistance.

Physical Properties

Appearance: Brown granular
Crystal: Trigonal crystal
Bulk density: 1.95 g/cm³
True density: ≥ 3.9 g/cm³
Mohs Hardness: 9.0
Melting point: 2250 ℃
Refractory degree: 1900℃
Molecular formula: Al₂O₃
Al₂O₃ CAS No.: 1344-28-1
HS Code: 2818101000

Application

•F-grit for bonded abrasives such as resin bonded grinding wheels, vitrified grinding wheels.
•P-grit for coated abrasives such as sandpaper, sanding belts.
•Blasting media, metal preparation.
•Laminates, coatings, lapping, polishing.
•Anti-slip applications like floor, ceramics, auto brake parts.
•Manufacturing advanced refractory materials, castables, refractory bricks, etc.

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