Good operational practice for compression crushers, ensure that:
•the crusher is correctly specified, including capacity, stroke and crusher cavity;
•product volumes and gradings are monitored throughout the life of the crusher;
•feed material is the correct size for the feed opening, well-graded and free of fines;
•feed and volume are sufficient to maintain chole-feeding, even when feed is intermittent ;
•feed distribution is consistent to ensure an even loading on the crusher;
•crusher liners are correctly specified to ensure even wear and reduce packing;
•crusher setting is maintained to maximise product and balance total crusher loading.
Poor operational practice. Do not:
•trickle feed, as this may lead to product flakiness and high, uneven wear;
•reduce the amount of oversize material in the feed;
•feed undersize as this may lead to uneven wear and packing;
•assume constant throughput and product grading, as feed and crusher settings may vary.
Maintenance. Monitor:
•crusher-drive motor loads, high amps may indicate mechanical or crusher liner problems;
•crusher run down times, shorter times may give early warning of mechanical problems;
•cooling water temperature and oil pressure/ flow/ temperature;
•manganese spread; action may be required to avoid overstressing of machine frame or fouling of static members.