PRODUCT NAME: Brown Fused Alumina
TYPE: BFA
TIME：2017-11-08
VIEWS：1537
PRODUCT DESCRIPTION：YONAI manufactures competitive brown fused alumina.
Brown Fused Alumina (BFA) is produced by a reduction fusion of high quality bauxites in electric arc furnaces. It is both a hard and tough material with high strength, making it an excellent abrasive grain for applications such as grinding wheels, sandpaper, blasting media, metal preparation, lapping, polishing, and grinding. Its thermal properties make it an excellent raw material for refractory applications.
Brown Fused Alumina – Production Process
The key production processes are as follows:
①Mining of bauxite.
②Calcining of bauxite.
③Fusing of bauxite with iron and carbon.
④After the fusing process, the ingot with brown fused alumina needs to cool down.
⑤Breaking the ingot content (breaking the Brown Fused Alumina).
⑥Crushing of brown fused alumina lumps.
⑦Grinding of brown fused alumina lumps/bricks.
⑧Sieving of brown fused alumina into different sizes.
⑨Packing of the brown fused alumina grains.
YONAI BROWN FUSED ALUMINA
Physical
Characteristics
Color
Brown
Phase of Mineral
α-Al2O3
True Density
3.6~4.1
g/cm3
Bulk Density
1.5~2.2
g/cm3
Grain Shape
Angular
or Sharp Edge
Melting Point
1950
℃
Mosh Hardness
9.0
Microhardness
HV1800-2200
Chemical
Characteristics
For Refractory Use
Grain Size
Al2O3
TiO2
SiO2
Fe2O3
0-1 mm
＞95.2%
3.5%
max
1.0%
max
0.2%
max
1-3 mm
3-5 mm
5-8 mm
200mesh
＞95.0%
3.5%
max
2.0%
max
0.4%
max
325mesh
For Abrasive Use
Grain Size
Al2O3
TiO2
SiO2
Fe2O3
F12-F80
＞96.0%
1.5-3.5%
1.3%
max
0.3%
max
F90-F150
＞95.2%
F180-F220
＞95.0%
More Fineness
＞93.0%
