There are many grinding mill for barite and calcite. Raymond mill, ultrafine mill, vertical roller mill and other equipment are ideal grinding mill models. This paper mainly introduces the application value of ultrafine mill machine. With the vigorous development of the fine powder market, the fine powder mill equipment also presents new grinding advantages and characteristics, which meet the more and more in-depth development of the fine powder processing market demand. The GKW ultra-fine roller mill produced by GuiLin Mining Machinery Co., Ltd. Science Co., Ltd. is a special grinding mill machine for the deep processing project of fine mineral powder.