... strong powder, competitive price used in barite, calcite, feldspar, limestone, talc, Whitehead, gypsum JUNYU raymond mill mining equipmentcintroduction1.Raymond mill ... of machine is mainly used barite, calcite, feldspar, limestone, talc, Whitehead, gypsum and so on. Mohs hardness of not greater ... than 9.3 and humidity below 6% of non ...