Proprietor mainly provides slag powder for cement plant and concrete mixing plant. While more and more slag powder added to the cement, they get more and more orders for it. So the proprietor decides to build a 200000 tons per year Slag grinding production line to improve enterprise Competition. After the project put into production, power consumption of the whole system less than 42kWh/t, production cost is the lowest comparing with other companies in the same industry. Competitiveness of their products get improved a lot. The proprietor is very satisfied with the slag grinding production line provided by our company.