Brown aluminum oxide is obtained from fusion of high-quality bauxite. Main features are Good harness, high compression strength, good hydrophily and lower expansion coefficient.

There are F sand and P sand.

The F grits 12#-220# is widely used to produce Bonded abrasives grinding wheel, cutting discs, also for sandblasting.

P sand used to produce coating abrasives sand paper, sand belt, flap wheel, etc.

What Is Difference Between Tilting Furnace Melted BFA & Fixing Furnace Melted BFA ?
Ball Milling & Barmac Process?
 

1. Tilting furnace process affects SiO2, SiO2 <1% by Tilting furnace, SiO2 <1.5% is by fixed furnace.

2. Barmac affects the density, the grain shape is  rounder & the density is greater than ball milling

3. The Tilting furnace made BFA has high Al2O3 content

4. The corundum has good toughness & more suitable for abrasive products by dumping furnace process
 

The difference between F-grit & P-grit Abrasive grains:

F-grit is more suitable for bonded abrasive tools.

P-grit is more suitable for coated abrasive tools. It is with a closer tolerance size distribution, lower density, and better self-sharpening ability than non-P-grit abrasives, which means that they offer a more consistent surface finish.

Grit size: 16#, 20#, 24#, 30#, 36#, 46#, 54#, 60#, 80#, 100#, 120#, 150#, 180#, 220#
Micropowder: 240#, 280#, 320#, 360#, 400#, 500#, 600#, 800#, 1000#, 1200#, 1500#,  2000#
Refractory Grit size:1-0mm, 3-1mm, 5-3mm, 5-8mm, -200mesh, -240mesh, -320mesh.

Main Technical Index
Shape	Sharp,Angular
Color	Brown
Crystalline system	Trigonal
Mohs Hardness	9 Mohs
Vicker Hardness	2200 kg/m2
True Gravity	3.97g/cm3
Refracroriness	1,900°C
Melting Point	2,250°C
Chemical Index	Al2O3≥95% Fe2O3≤0.30%
	TiO2≤3.5% SiO2≤1.0%
Specification	F12-F220,P12-P220
	8-5mm, 5-3mm, 3-1mm, 1-0mm etc.
	100mesh ,325 mesh etc.
Product Standard	China GB/T,FEPA etc.

Type	Grit	Al2O3	TiO2	CaO	SiO2	Fe2O3
A	F4-F80	95.00-97.50	1.70-3.40	≤0.42	≤1.00	≤0.30
	F90-F150	94.50-97.00
	F180-F220	94.00-97.00	1.70-3.60	≤0.45	≤1.00	≤0.30
	F230-F800	≥93.50	1.70-3.80	≤0.45	≤1.20	≤0.30
	F1000-F1200	≥93.00	≤4.00	≤0.50	≤1.40	≤0.30
A-B	F4-F80	≥94.00	1.50-3.80	≤0.45	≤1.20	≤0.30
	F90-F220	≥93.00	1.50-4.00	≤0.50	≤1.40	≤0.30
	F230-F800	≥92.5	≤4.20	≤0.60	≤1.60	≤0.30
	F1000-F1200	≥92.00	≤4.20	≤0.60	≤1.80	≤0.30
A-P	P12-P80	95.00-97.50	1.70-3.40	≤0.42	≤1.00	≤0.30
	P100-P150	94.50-97.00
	P180-P220	94.00-97.00	1.70-3.60	≤0.45	≤1.00	≤0.30
	P240-P800	≥93.50	1.70-3.80	≤0.45	≤1.20	≤0.30
	P1000-P1200	≥93.00	≤4.00	≤0.50	≤1.40	≤0.30
	P1500-P2500	≥92.50	≤4.20	≤0.55	≤1.60	≤0.30
A-R	0-1mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	1-3mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	3-5mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	5-8mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30

Main Features of Brown Fused Alumina

• High Hardnes
• Good toughness
• Chemical stability
• Iron Free

Main Applications of Brown Fused Alumina

• Make resin cutting discs,cremic grinding wheels
• Make coated abrasives such as sand belts, sand paper,flap wheels, fiber wheels...
• Blasting Media
• High grade refractories
• Anti-slip resistant materials