利用造纸白泥和页岩混烧制备水泥混合材的工艺研究

摘要

Activity admixture system of white mud of paper and shale has been designed and optimized in this paper.The inffluences of processing parameters which include molar ratio of CaO to SiO2,blend time,forming pressure,temperature,holding time and cooling method on activity of admixture system have been studied,the appropriate processing parameters have been determined.The results show that the activity cement admixture whose activity index above second-class fly ash can be prepared at appropriate processing parameters by white mud of paper and shale.The addition of 20％ admixture can product P.O42.5 cement.%对造纸白泥-页岩活性混合体系的配比进行设计与优化.研究了混合体系钙硅比(摩尔比)、混料时间、成型压力、煅烧温度、保温时间、冷却方式等工艺参数对活性体系的影响,并初步确定了合理的工艺参数.结果表明,利用造纸白泥和页岩在适当工艺条件下制备的水泥混合材,其活性指数可达到二级粉煤灰标准,混合材单掺20％可满足PO42.5水泥生产.