Professional abrasive supplier. White fused alumina White fused aluminum oxide

1. White Fused
Alumina
White corundum is produced from
alumina by melting in the electric
arc furnace.
Color : white
Mohs hardness: 9
Crystal shape :trigonal system,
Chemical component :Al2O3 >
99%, Little amount of Sio2,
Fe2O3, Na2O.
Main application: abrasives,
refractories, polishing,
sandblasting purposes.

2. Smelting
There are two ways of smelting method:
Fixed Furnace
Tilting Furnace
color Smelting
time
Hardness
Fixed
Furnace
white short good
Tilting
Furnace
white but
dark
long better

3. Tilting Furnace

4. Fixed Furnace

5. Manufacturing of grains
Grain size:
F standard F4-F220 P12-P220
Section sand: 0-1mm, 1-3mm,3-5mm, 5-8mm
Finer: 200#,325#
White corundum block → coarse crushing → ball mill or roller machine (the grain shape
depends on the manufacturing technique, the ball mill better than roller machine)→magnetic
separation →screening particle size (vibration sieve) → sampling test particle size distribution
→bagging finished products

6. • Nature Cooling Breaking

7. First Crushing
• Jaw Crusher

8. Fine Crushing
• Twin Roller

9. Fine Crushing
• Ball Mill

10. Sieving
Screening equipment: Coarse Fraction, magnetic seperation, sieving the
needed size

11. Micropowder
Micro Size: F230-F1200, P240-P2500, JIS240-JIS8000, W63-W5
Method ： White fused aluminum oxide fines→ball mill→air segment→acid-alkali
washing→water washing→select the particle size （ water
effusion ）→ stoving→loosen→finshed micopowder

12. Water Effusion

13. Introduction of method on selecting
micropowder
• Principle of water effusion:Hydraulic impulse
• The lower the hydraulic pressure is, the finer the size will be. Accordingly the higher the hydraulic
pressure is, the coarser the size will be.