China building materials news reported that jiangsu yancheng jida machinery manufacturing co., LTD., on the basis of SEPAX high-efficiency eddy current separator of Smith company in Denmark, cooperated with yancheng institute of technology to carry out independent research and development innovation and made a major breakthrough in the original design structure. New efficient vortex classifier in the recently used in jinta cement plant in xuzhou, jiangsu, Ф 3.2 m x 13 m cement mill under the condition of no grinding roller pressure, crushing, break through the routine production. • after nearly a month of operation, the output of P•O42.5 cement is stable above 90t/h, the strength is about 48MPa in 28 days, and the comprehensive power consumption is about 25kWh/t. The successful use of domestic Ф 3.2 m above the cement grinding circle flow (CCTV), giving the technical support on production practice, and further proves the domestic grinding technology has to catch up with the world level.