To utilize two properties of fly ash as grinding acid and admixture, it can be grinded in a certain ratio in primary mill and secondary mill separat ely to get a certain improvement in cement production, cement quality and the ad dition amount of fly ash.

• 利用粉煤灰可以作助磨剂和混合材的2种特性,在生产复合硅酸盐水泥时将粉煤灰按一定比例分别在一级磨和二级磨中粉磨,使水泥磨产量、出磨水泥质量、粉煤灰掺量都有一定程度的提高。