常压盐溶液法制备α-半水石膏转晶剂的研究  

Study on crystal modifier in preparation of α-semi hydrated gypsum by aqueous salt solution method in atmospheric pressure

作　　者：刘红霞[1] 彭家惠[1] 瞿金东[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《新型建筑材料》2010年第4期5-8,共4页New Building Materials

基　　金：国家自然科学基金资助项目(50872160)

摘　　要：转晶剂是常压盐溶液法制备α-半水脱硫石膏的关键因素之一。从晶体形貌、脱水速率、液相离子浓度等多个角度考察了各类转晶剂对α-半水脱硫石膏的影响规律及其作用机理。结果表明,多元有机酸类转晶剂的效果最显著,在适宜掺量下,可以获得长径比接近1∶1的理想短柱状晶体。Crystal modifier is one of the most critical factors in preparation of α-semi hydrated gypsum by aqueous salt solution method in atmospheric pressure..The influence of various types of crystal modifiers on α-semi hydrated gypsum and its mechanism were researched from aspects of crystal morphology,dehydration rate,liquid ion concentration,and so on. The results showed that：multi-organic acid crystal modifier has the most significant effect to α-semi hydrated gypsum,and an ideal short columnar crystal with aspect ratio close to 1：1 could be acquired in an appropriate dosage.

关 键 词：Α-半水石膏 常压盐溶液法 转晶剂 脱硫石膏 

分 类 号：TQ177.34[化学工程—硅酸盐工业]