Abstract: Jilin Yatai Group Co.,Ltd.Tripod deer company had a double rotator raw mill disabled of ?3.5m×7+3m a few years,to revitalize the idle assets and increase the revenue,they decided to transformate it to a cement mill which was composed of semi-final grinding system with a roller press.After demonstrating its technical feasibility in detail,our company completed this project’s design,main supplier,installation and commissioning.Until now,this project goes into production ,reaches the standard and satisfies owner’s need,which has a certain referential significance.