The alumina grinding balls has been widely used in ball mills as abrasive media for ceramic raw materials and glaze materials in ceramic factories, cement factories, enamel factories and glasswork owing to the extraordinarily high density, high hardness, high wear resistance. During the abrasive/grinding processes, ceramic balls will not e broken, it will not contaminate the materials to be grinded. Type: According to the content of aluminum oxide: 60-70%, 65-75%, 95%, 95% According to the sizes: Φ25mm-Φ75mm.
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 |
20-15 |
60-70 |
| Fe2O3 (%) |
0.06 |
0.05 |
0.41 |
<0.5 |
| TiO2 (%) |
0.02 |
0.04 |
1.7 |
1.8 |
| 其它 Other (%) |
2.53 |
1.9 |
5 |
10 |
| (g/cm3) Bulk density |
3.65 |
3.68 |
2.93-3.0 |
2.90-3.0 |
| (%) Water absorption |
<0.01 |
<0.005 |
<0.01 |
<0.05 |
| Moh's Hardnes(grade) |
9 |
9 |
≥8 |
≥8 |
| Compressium strength |
>2000 |
2100 |
>1000 |
>1000 |
| (%) Abrasion |
0.01 |
0.0084 |
0.02 |
0.03 |
| colour |
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 | |
