石灰粉煤灰改性磷石膏做水泥调凝剂的研究  

Study on using phosphor-gypsum property-modified by lime and flyash as cement retarding agent

作　　者：周丽娜[1] 沈卫国[1] 周明凯[1] 李进辉[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,430070

出　　处：《新世纪水泥导报》2007年第1期17-19,共3页Cement guide for new epoch

基　　金：教育部科学技术研究项目;项目资助号为105125。

摘　　要：采用石灰、粉煤灰复合改性磷石膏的方法制备出水泥调凝剂。结果表明:该方法可有效固结磷石膏中有害杂质可溶磷、可溶氟;对于可溶磷、氟含量较高的磷石膏,必须经过改性后方可使用,改性后的磷石膏可取代天然石膏,在保证水泥性能的前提下,可节省熟料,降低成本。Cement retarding agents can be produced by means of adopting lime and flyash to modify properties of phosphor-gypsum. Result shows that the detrimental impurities of soluble phosphor and soluble fluorine in phosphor-gypsum can be solidified with this method. Phosphor-gypsum with high content of soluble phosphor and fluorine must be used after property modification. Property modified phosphor-gypsum can be used instead of natural gypsum, which can save clinker and cost under preconditions of cement property remaining guaranteed.

关 键 词：磷石膏 改性 调凝剂 

分 类 号：TQ172.462[化学工程—水泥工业]