Black Fused Alumina

Black fused alumina is a kind of flexible abrasive material, which is made of high iron bauxite fused at high temperature in an electric arc furnace and then cool to produce a gray-black crystal with a-Al2O3 and iron spinel as the main mineral phases. Black corundum is an energy-saving and environmentally-friendly alternative wear resistant material because its production process uses waste comprehensive utilization and does not produce any harmful gas.

Category

Description

Black fused alumina is a black color artficial corundum for abrasives. It’s made of fusion of bauxite and reducing agent in electric arc furnace. Black fused aluminium Oxide has certain content of ferro oxide and silicon oxide, which make it looks black. Black fused aluminium oxide has 9 mohs hardness. Black fused alumina has good features as strong tenacity, better bonding ability, giving less heat, good self-sharpening, smooth surface and high finish. Black alumina is suitable for polishing various spare parts such as, bicycles, machines, hard metal tools, medical apparatus, glass products and stone grinding. Black alumina also the right material for making abrasive tools: fiber- reinforced cutting wheels, grinding wheels, sand cloth, paper and polishing compounds It is used in production processes such as. Black fused alumina; It does not contain respirable free silica (SiO2).Our company’s expert technical team will be happy to assist you.

PHYSICAL INDEX OF BLACK FUSED ALUMINA
Color Black
Crystal shape Trigonal crystal system
Melting point(℃) 2050
Max temperature(℃) 1850
True density(g/cm3) 3.5
CHEMICAL INDEX OF BLACK FUSED ALUMINA
GRADE Al2O3(%) SiO2(%) Fe2O3(%) TiO2(%)
A >60 <30 5-13 2-4
A+ >70 <15 5-10 2-4
 
APPLICATION OF BLACK FUSED ALUMINA 
1. Preferred material of the slip-prevented road and coal pits warehousing.
2. Manufacturing resin-cutting slice, edges and corners grinding and coated abrasives.
3. Light ornament, plastic and hardware polishing, and also applicable to the sand blasting.
4.  Suitable for stainless steel work piece polishing and abrading and making the whetstone and polishing paste.
5.  Used for the bicycle, motorcycle, sewing machine, and clock parts.

Customer Reviews

5/5

I am very satisfied with its performance and quality. It is a durable and efficient abrasive that can grind and polish various materials.

5/5

I have no experience with brown fused alumina. However, based on the web search results, I can say that brown fused alumina is a high-performance abrasive and refractory material.

Join Our Newsletter