High Hardness Alumina Grinding Balls
This grinding ball is based on a 92% high alumina content as the core substrate, with a Mohs hardness of 9 levels. It is specially designed for multi material "grinding+milling" dual scenarios and can be adapted to the processing of different hardness materials such as ceramic bodies, ores, metal powders, etc. Compared with ordinary grinding balls (Mohs hardness level 7-8), it can solve the problems of low grinding efficiency and incomplete milling of hard materials - a ceramic enterprise used it to grind high-density blanks, reducing grinding time by 25%; A certain mine used it to mill quartz ore, which increased the efficiency of rough milling and crushing by 30%, helping multiple industries break through the bottleneck of hard material processing.
Key Benefits
92% alumina content endows it with stable hard foundation. After high-temperature sintering at 1600 ℃, the compactness of the sphere reaches over 98%, with no internal pores; A Mohs hardness of 9 can easily handle materials with a hardness of ≤ 7 (such as feldspar and iron ore), with a compressive strength of up to 180MPa, and is not easily cracked during milling. Third party testing shows that after continuous grinding of ceramic bodies for 30 days, the wear rate is only 0.06%, far lower than the level of 0.3% for ordinary grinding balls; And the surface roughness Ra of the sphere is ≤ 0.6 μ m, which reduces material adhesion during milling, ensures no debris pollution, and guarantees the purity of the processed material.
Technical Specifications
| Property |
Value |
| Hardness |
9 Mohs |
| Thermal Conductivity |
20 W/mK |
| Alumina Content |
92%, 95% |
| Impact Resistance |
Good |
| Water Absorption |
≤0.01% |
| Density |
3.6 G/cm³ |
| Shape |
Spherical |
| Color |
White |
Performance Advantages
92% alumina content endows it with stable hard foundation. After high-temperature sintering at 1600 ℃, the compactness of the sphere reaches over 98%, with no internal pores; A Mohs hardness of 9 can easily handle materials with a hardness of ≤ 7 (such as feldspar and iron ore), with a compressive strength of up to 180MPa, and is not easily cracked during milling. Third party testing shows that after continuous grinding of ceramic bodies for 30 days, the wear rate is only 0.06%, far lower than the level of 0.3% for ordinary grinding balls; And the surface roughness Ra of the sphere is ≤ 0.6 μ m, which reduces material adhesion during milling, ensures no debris pollution, and guarantees the purity of the processed material.
Packaging & Options
- Standard packaging: 25kg/drum
- Custom packaging available
- Sizes available: 13mm to 90mm
Customer Support
Pre sales provision of "material hardness adaptation testing", recommending corresponding specifications (10-50mm optional) based on the hardness of the materials to be processed by customers (such as ore grade 7, ceramic body grade 5); Provide free samples to support customers in conducting dual scenario testing of grinding and milling, and issue effect reports. After sales provide quarterly hardness retesting services, monitor the hardness degradation during the use of grinding balls, and provide early warning of ball replacement cycles.
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