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牡丹江特种水泥厂φ1.9/2.2m×36m前端扩大式干法窑自1983年投产以来,一直采用煤矸石与风化砂配比作为粘土质原料,1993年5月份开始用粉煤灰代替煤矸石来烧制水泥。
Since Mudanjiang Special Cement Factory’s φ1.9/2.2m×36m front-end enlarged dry kiln was put into operation in 1983, coal gangue and weathered sand were used as clay raw materials. In May 1993, coal ash was replaced with fly ash. To burn cement.