... materials with Mohs hardness below 9.3 and humidity below 6%, such as quartz, feldspar, calcite, talcum, barite, fluoride, ... , graphite, carborundun, heat insulating material, etc.Features of the High Pressure Suspension Grinder: 1. Compared with the common Raymond grinding ... discharge standard.5. The classifier is easy for adjustment.6. The grinding device adopts a superposition multi-grade sealing ...