Specifications

1.Normal Aluminium Oxide
2.Calcined Aluminium Oxide
3.Brown Aluminium Oxide
4.Favorable Price
5.Professional Manufactory

Black natural corundum(black fused alumina) grit and powder  

 

 

 

 

 

Introduction

Black Fused Alumina is also known as low aluminum corundum. It is also a new type

 product of polishing material, and it is a dark gray crystal body made Al2O3 and

ferropicotite as main ore in the electric arc furnace by smelting the bauxite. It has

characteristics of moderate hardness, high toughness, high temperature resistance,

 and stable thermal stability

 

Specifications

 

Item	Al2O3	Fe2O3	SiO2
Grade A	85 %	9 %	≤ 6 %
Grade B	80 %	10 %	≤ 10 %
Hardness (mohs )	≥ 90	Melting point (°C)	2050
True density (g/cm3)	≥ 3.50	Linear expansion coefficient	7-9

 

Applications

 

For Free grinding, such as glass industry

For non-slip of airport and road, chemical factory board paving

For Produce ceramic grinding wheel, resinoid grinding wheel, Grinding stone.

For free grinding, such as coarse grinding before electroplating products .

For polishing and sandblasting of stainless steel, fabricated metal products .

For investment casting technics of stainless steel and aluminum casting in coating .

For sand paper, sand cloth, sand belt, polish wax, abrasive paste, coating etc.

For abrasion and high temperature resistant in steel metallurgy, various industrial stoves