4R3220 Improved pendulum pulverizer is mainly used in chemical and building material industry and such as grinding glass, rubber, pesticides, enamel, paint, phosphate fertilizer, paper. Hardness below seven Moh’s hardness following humidity below 6% non-flammable and explosive materials. Such as: talc, barite, calcite, limestone, marble, manganese ore, iron ore soil, chrome ore, feldspar, quartz, gypsum, kaolin, bentonite, etc. This machine has the advantages of high output, wide use, power saving, convenient operation and stable performance. It is an ideal equipment for grinding industry.