R pendulum grinder can be called raymond mill .r pendulum grinder(raymond mill) is suitable for producing minerals powder, which is widely used in the metallurgy, building materials, chemical, and mining industry. it can be used for grinding barite, calcite, potash feldspar, talc, marble, ceramic, glass and some other material that moh’s hardness degree is below 7, humidity is in 6%, and non-flammable non-explosive minerals. the final product size is adjustable as required in the range of 100-