湖北省钟祥县水泥总厂一项“将立窑烟道灰按比例兑入水渣中制成水泥”的决策,每年可为企业节约资金20余万元。过去,这个厂每年将立窑尘降室收进的近4000吨烟道灰全部拉到附近的荒山上,白白地倒掉了。既浪费了原材料,又严重地污染了厂区 The decision of the cement factory of Zhongxiang County, Hubei Province, “a method of mixing the kiln flue ash into water slag according to proportions to make cement” can save the company more than 200,000 yuan each year. In the past, this factory took nearly 4,000 tons of flue ash collected in the shaft kiln dust chamber every year to the nearby barren hills and dumped it in vain. It wastes raw materials and seriously pollutes the plant area.