1引言大连水泥厂2011年生产的P·C32.5水泥混合材为矿渣、石灰石、石膏、矿渣粉,不加助磨剂,2011年P·C32.5水泥配比及配料成本见表1。由表1看出,由于石灰石取自自备矿山,成本最低,而矿渣、石膏、矿渣粉均是外购,价格较贵,其中矿渣粉价格甚至高于熟料成本,水泥配料成本达到202.56元/吨。寻找低价格原料代替高价矿渣、矿渣粉,最大限度提高低价石灰石掺量,是降低成本的有效途径。据调查,本地的炉渣价格为60~70元/吨,是活性混合材,并 1 Introduction Dalian cement plant in 2011 P · C32.5 cement mixture for the slag, limestone, gypsum, slag powder, without grinding aids, 2011 P · C32.5 cement ratio and ingredients cost in Table 1. Table 1 shows that, as the limestone is taken from the mine, the lowest cost, while the slag, gypsum, slag powder are purchased, the price is more expensive, slag slag price even higher than the cost of clinker, cement ingredients cost reached 202.56 yuan /Ton. Looking for low-cost raw materials instead of high-priced slag, slag powder, to maximize the low-cost limestone content, is an effective way to reduce costs. According to the survey, the local slag price of 60 to 70 yuan / ton, is the active mixture, and