Brown Corundum

Brown Corundum is made from high-quality bauxite by fusing in a tilt-pour electric are furnace at a high temperature of 2000 °C. It is processed with cone crusher and Barmac crusher by the dressing. Magnetic-separating and screeing. The crystallized ingot becomes grains of high density and hardness. Good self-sharpening and excellent alumina is grinding properties. The grains are in a blocky shape. Brown corundum is suitable for manufacturing vitrified and resinoid tools. Lapping, polishing, and blasting. It also may be used as superior refractories.

Product Details

 A Grade Brown Corundum
Chemical Analysis(%)
Physical Properties
Al2O3
92.5-97.0%
Specific Gravity
3.90g/cm3
Fe2O3  
0.3-1.0%
Bulk density
1.53-1.99g/cm3
SiO2
1.0-2.0%
Mohs Hardness
9.0
TiO2  
1.5-4.0%
  
Size
FEPA
F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800
JIS
#8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000
B Grade Brown Corundum
Chemical Analysis(%)
Physical Properties
Al2O3
70-80%
Specific Gravity
3.50-3.90g/cm3
Fe2O3  
8-15%
Bulk density
1.30-1.90g/cm3
SiO2
2-5%
Mohs Hardness
7.0-9.0
TiO2  
  3-5%
  
Size
FEPA
F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180
JIS
#8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180
C Grade Brown Corundum
Chemical Analysis(%)
Physical Properties
Al2O3
50-65%
Specific Gravity
3.50-3.90g/cm3
Fe2O3
12-20%
Bulk density
1.30-1.90g/cm3
SiO2    
15-25%
Mohs Hardness
7.0-9.0
TiO2  
  4-6%
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Size
FEPA
F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180
JIS
#8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180
Main Applications of Brown Corundum:
  • Bonded Abrasives and Coated abrasives     
  • Refractory,casting,foundry,and painting etc
  • Wet and dry blast media,grinding and polishing etc                                 
  • PCB plate(PCBA,FPC,LED) blasting
  • Polishing wax, Grinding stones, polishing pads, etc                                   
  • Removal of scale, rust, and old coatings
  • Ceramics shapes     
  • Grinding wheels, Cup wheels, etc
  • Brake and friction linings
Packing
25kgs pvc bags+1mt big bg
25kgs pvc bags+pallet

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