| Customization: | Available |
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| Material: | Alumina |
| Content: | >90% |
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Introduction:
Mid-Alumina grinding balls refer to materials such as bauxite, roller powder, industrial alumina powder, and high-temperature calcined Alpha alumina powder as raw materials, after batching, grinding, milling (pulping, mud making), forming, and drying , Sintering and other processes, mainly used as a grinding medium and widely used ball stone. According to different alumina content, it can be divided into medium-aluminum balls, medium-high aluminum balls and high-aluminum balls. Generally, we classify those with 65%-70% alumina content as medium-aluminum balls. Some types mainly made by hand by some special ceramic factories.
Application:
Grinding Balls are suitable for grinding medium used in ball grinding machines.
Technical Parameter:
| Product |
Al2O3 (%) |
Bulk density (g/cm2) |
Water absorption | Mohs Hardness scale | Abrasion loss (%) |
Color | |
| Medium Alumina Grinding Balls | 65-70 | 2.93 | 0.01 | 8 | 0.01 | Yellow-White | |
| Appearance Demand | |||||||
| Medium Alumina Grinding Balls | |||||||
| Crack | Not Permission | ||||||
| Impurity | Not Permission | ||||||
| Foam hole | Above 1mm not permission, size in 0.5mm permit 3 balls. |
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| Flaw | Max. size in 0.3mm permit 3 balls | ||||||
| Advantage |
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| Warranty |
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| Items | Proportion | Items | Proportion |
| Al2O3 | 65-70% | SiO2 | 30-15 |
| Fe2O3 | 0.41 | MgO | 0.10 |
| CaO | 0.16 | TiO2 | 1.71 |
| K2O | 4.11 | Na2O | 0.57 |
| Spec.(mm) | Volume(cm3) | Weight(g/pc) |
| Φ30 | 14±1.5 | 43±2 |
| Φ40 | 25±1.5 | 100±2 |
| Φ50 | 39±2 | 193±2 |
| Φ60 | 58±2 | 335±2 |
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