In industrial production, steel companies generate large amounts of solid waste during the steelmaking process. Long-term stacking of these solid wastes can cause serious environmental pollution and increase safety risks. Therefore, steel companies are imminent in dealing with these wastes.

With the vigorous promotion of the national environmental protection policy, a large number of steel companies began to pay attention to the problem of steel slag treatment, and the processing equipment is also constantly upgraded. As an ideal grinding equipment for effectively treating steel slag, steel slag vertical mill can have good performance for environmental protection.

In the development and design of the steel slag vertical mill, chaeng installed vibrating screens and bag-type dust collectors to truly achieve “0” emissions of waste slag. Through the test of chaeng Steel Slag Vertical Mill in Ninggang's annual output of 1.5 million tons of composite slag powder production line, the specific surface area of the powdered steel slag powder can reach 450-500m2/kg. Good activity, grinding the steel slag to the appropriate fineness and scientific formula, so that the concrete plays the role of "micro-expansion" of the overall uniformity, which brings about the low hydration heat, low slump, high impermeability, which the conventional cement does not have. A series of extremely valuable properties such as high strength, high frost resistance, high wear resistance, high seawater corrosion resistance, high carbonation resistance and a life span of more than 100 years. The fine steel slag powder has a stability of up to 45% in the cement even if the free calcium oxide content is 5%, and the stability is still acceptable. It can be used as a mixture of concrete admixture and cement.

In the Ninggang project, the vertical mill of chaeng has been unanimously recognized by everyone: high output, low energy consumption, low price and good quality. The indexes of vertical mill are better than imported vertical mill.