Brown Fused Alumina

Brown Fused Alumina, also called emery abrasive, is produced by electro-fusion of high-grade bauxite in a tilting arc furnace or fixed furnace at high temperature. It is suitable for manufacturing of Resin Bonded Abrasives, Coated Abrasives for Lapping, Polishing and Sand Blasting.

Chemical Composition:

Al2O3: 95.5% – 97.5%, Fe2O3: 0.5% – 2.0%, SiO2: 1.0% – 1.5%, TiO2: 2.0% – 3.0%
Hardness: 9 on the Mohs scale
Density: 3.9 g/cm3 Melting Point: 2050°C
Particle Size: 12-220 mesh

Description

Brown Fused Alumina also known as electrocorundum, corundum, and aluminum oxide is fused and crystallized under the high temperature of above 2250°C in arc furnace with high quality abrasive bauxite as raw material. Brown fused aluminum oxide is a tough, hard material (Mohs hardness 9, ) with high strength, excellent wear and corrosion resistance and good thermal conductivity. Brown Fused Alumina can produce bonded abrasives, coated abrasives. A could be used for abrasive、sandblasting and precision casting and use as refractory materials.


Advanteges

High Hardness

Brown Fused Alumina has a Mohs hardness of 9, making it one of the hardest abrasives available in the market. This characteristic ensures that it can withstand the toughest applications and provide consistent results over time. 

High Toughness

Brown Fused Alumina has excellent toughness, which allows it to resist fractures and breakage. This toughness also makes it suitable for high-pressure applications that require a strong abrasive.

 

High Density

Brown Fused Alumina has a high density, which ensures that it can cut through tough materials quickly and efficiently. This density also helps to reduce the amount of dust generated during the cutting process, making it a cleaner and safer abrasive to use.

 
CHEMICAL INDEX OF BROWN FUSED ALUMINA
Refractory sand
Grit Size AI2O3 SiO2 Fe2O3 TiO2
0-1mm >95.2% <1% <0.3% <3%
1-3mm >95.2% <1% <0.3% <3%
3-5mm >95.2% <1% <0.3% <3%
200mesh >95.0% <1% <0.3% <3%
325mesh >95.0% <1% <0.3% <3%
Abrasives sand
Grit Size AI2O3 SiO2 Fe2O3 TiO2
F8-F220 >95.2% <1% <0.3% <3%
F230-F3000 >95.% <1.3% <0.3% <3.5%
Refractory sand segment sand "FEPA" 0-1mm 1-3mm 3-5mm 5-8mm 8-10mm 10-15mm...
fine powder "FEPA" -100mesh -200mesh -325mesh...
Abrasive sand grit sand "FEPA" F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220
micropowder "P" P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P2500
"FEPA" F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 F3000
"JIS" 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000#
 
1. Used in refractory material, sandblasting, free grinding, resin abrasives, coated abrasives, waterjet cutting, water filtration and function filter, etc. 2. Brown fused alumina for lapping and polishing process. 3. Grinding high carbon steel, high-speed steel and chilled steel. 4. Surface preparation and finishing. 5. Producing mold of precision casting. 6. Thermal Spraying.

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.

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