Ball mill is the Gospel of coal ash. Coal ash is the fine ash collected from the smoke of burning coal, is one kind of Industrial waste with large output volume at present in china. Henan Zhengzhou Mining Machinery Co.Ltd. solve the historical problem for society with our star product ball mill after almost 60 years’ study. The ball mill produced by our company realize the rational use of the industrial waste--coal ash, and have a good control of coal ash pollution. Ball mill for coal ash has advantages such as low price, stable operation, extended working life and recycle of coal ash. In addition, ball mill for coal ash belongs to environment-friendly ball mill.