Grinding mechanism by impact/cataracting
In very coarse to coarse grinding, the size reduction is mainly made via impact. Impact between rocks and rocks in case of AG milling and impact between rocks and grinding media in case of SAG milling. In case of SAG milling the impact level must be kept acceptable to avoid balls and liners breakage.
The design will depend on:
- Drilling pattern on mill shell
- Mill speed (rpm)
- Maximum grinding media diameter (mm)
- Grinding media filling degree (%)
Key benefits:
- Optimum compromise between lifetime and grinding efficiency
- Continuous optimization of the liner profile via wear profile studies
- Anti-pulp racing design to avoid pulp circulation
- Design to avoid ball breakage and reduce consumption
