Brown fused alumina is made of high quality bauxite as main material,widely used in refractory industry. Sizes:0-1,1-3mm.

Brown Fused Alumina is made by high quality bauxite as main material, fusing and purifying in a pouring electric arc furnace at a temperature of over 2200 celcius degree, and made into different grain sizes through crystal, choosing, crashing, magnetic, separating, screening, washing etc. 

 

Chemical Composition(%)

Grit Size	Al2O3	TiO2	SiO2	Fe2O3	CaO	MgO
F4-F80	95.0-96.0	2.0-3.8	0.9	0.15	0.35	0.5
F90-F150	94.5-95.5
F180-F220	93.5-95.5
F200 Finer	≥92.00	1.50-3.80	≤0.45

  

Physical characteristics

Basic Mineral	Al2O3
Crystal Sysem	Hexagonal
Colour	Brown
True Density	3.90g/cm3 min
Mohs Hardness	9
Micro Hardness	HV1800-2200

  

Size Available: 

Abrasives F12-F1200,P12-P2500

Refractory 0-1mm,1-3mm,3-5mm,5-8mm,200mesh,325mesh

Other special specification could be supplied as required.

 

Applications:

1.Coated and bonded abrasive tools

2.Lapping and polishing processes

3.Sandblasting

4.Producing mold of precision casting

5.Refractory materials including low cement castables,plastics,bricks etc.

 

 

 

 

  

Brown fused alumina / A for Abrasives and Refractory