分别粉磨与共同粉磨对石灰石硅酸盐水泥颗粒分布及水化性能的影响  

Effect of separate and mixing grinding on particle size distribution and hydration properties of limestone portland cement

作　　者：蒋江[1] 曹德光[1] 李静[1] 

机构地区：[1]广西大学材料科学与工程学院,广西南宁530004

出　　处：《水泥工程》2014年第6期14-18,共5页Cement Engineering

摘　　要：试验采用分别粉磨工艺和共同粉磨工艺配制石灰石硅酸盐水泥,分析了石灰石和熟料的粉磨特性差异,并研究了在单位能耗相同情况下,两种粉磨制度下石灰石硅酸盐水泥各组份颗粒分布及水化情况。结果表明,分别粉磨制度能合理控制石灰石硅酸盐水泥颗粒的分布,使熟料处于更细的颗粒范围内,提高了粉磨效率;细的石灰石粉能促进水泥的早期水化反应,而中后期的水化速率主要取决于熟料颗粒的细度;采用合理的分别磨粉工艺配制的石灰石硅酸盐水泥,在相同龄期下,其水化产物含量较多,水化产物之间的连结更紧密,水泥石整体结构更密实。Limestone Portland cement was prepared by separate and grinding together process in the exmperiment, and the grinding characteristic difference of limestone and clinker was analysed. And at the same unit energy consumption, the particle size distribution and hydration properties of the limetone Portland cement in the two grinding systems were researched. The results show as follows, sep- arate grinding system can control the cement particle distribution reasonable and make the clinker in a finer particle size range, which increases the grinding effieney; and fine limestone powder can improve cement early hydration and the speed of late stage hydration de- pends on the fineness of clinker particle; with a reasonable separate grinding system, at the same setting time, the hydration product of limestone Portland cement is more than that of grinding together system, and the hydration products links more closely, the cement structure is more compact.

关 键 词：石灰石 分别粉磨 共同粉磨 颗粒分布 水泥水化 

分 类 号：TQ172.63[化学工程—水泥工业]