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High alumina grinding ceramic ball:
92%Al2O3 grinding ceramic ball, 95%Al2O3 grinding ceramic ball
Middle alumina grinding ceramic ball:
Micro-crystal middle alumina, carborundum middle alumina
High alumina grinding ceramic ball:
High alumina grinding ceramic balls are made from selected raw materials and fired in high temperature by advanced technique and automatic molding process using cool isostatic press. The ball serial includes various diameters ranging from 25mm to 75mm.
Advantages:
Compared with natural stone balls and normal ceramic balls, alumina grinding ball increases by 20-40 times in its performance of wear resistance.
Its grinding efficiency improves by 40%-60% and ball mill efficiency add by 30%-40%. Their total costs only take 40-60 percent of that of natural stone balls.
Main specification:
Item | High alumina grinding ceramic ball | Middle alumina grinding ceramic ball | ||
Micro-crystal middle-alumina | Carborundum middle alumina | |||
92%Al2O3 | 95%Al2O3 | 65-75%Al2O3 | 60-70%Al2O3 | |
Al2O3(%) | >92 | 95 | 65-75 | 60-70 |
SiO2(%) | 3.81 | 3 | 30-15 20-15 | 60-70 |
Fe2O3(%) | 0.06 | 0.05 | 0.41 | <0.5 |
TiO2(%) | 0.02 | 0.04 | 1.7 | 1.8 |
Other(%) | 2.53 | 1.9 | 5 | 10 |
Bulk density(g/cm3) | 3.65 | 3.68 | 2.93-3.0 | 2.90-3.0 |
Water absorption | <0.01 | <0.005 | <0.01 | <0.05 |
Moh’s hardness(grade) | 9 | 9 | >8 | >8 |
Compression strength | >2000 | 2100 | >1000 | >1000 |
abrasion | 0.01 | 0.0084 | 0.02 | 0.03 |
color | White | White | Yellow,white | Brown |
Raw materials | Calcined alumina | Calcined alumina | Refined bauxite powder | Bauxite powder |
Forming method | Isostatic pressing | Isostatic pressing | Impact briquetting | handmade |
