... highly advanced self-diffluent classification system:(1) The classifiers in LHM ball mill production line have a precise classification ... cost;7. Low failure rate and stale operation: because our ball mills and classifiers in the production lines are VFC ... calcite, marble, limestone, kaoline, gesso, barite, coal ash and slag, etc.(2) Hard materials: carborundum, brown corundum, superfine cement, ...