Cement mill is the core equipment for grinding material after clinker production. Generally, the cement mill can be called cement grinding mill. Among production cost of cement manufacturing, grinding powder consumption takes 35%-40%. The cement grinding plant is a vital link to control cement quality. To some extent, grinding quality can make up the shortage of clinker quality. In another word, the cement grinding mill can increase the cement quality and guarantee the qualification rate of cement. In general, cement mill can both apply for dry cement production and wet cement production.