用脱硫石膏制备高强石膏粉的转晶剂  

MEDIUM CRYSTAL AGENT IN HIGH-STRENGTH GYPSUM WITH FLUE GAS DESULPHURIZATION GYPSUM

作　　者：白杨[1] 李东旭[1] 

机构地区：[1]南京工业大学材料科学与工程学院材料化学工程国家重点实验室,南京210009

出　　处：《硅酸盐学报》2009年第7期1142-1146,共5页Journal of The Chinese Ceramic Society

基　　金："十一五"国家科技支撑计划重大项目(2006BAF02A24)资助

摘　　要：半水石膏在没有外界因素干扰的情况下通常自由生长成针状晶体。为改变半水石膏晶体生长习性,获得短柱状的晶体,一般在溶液中加入改变晶体生长习性的转晶剂,转晶剂对高强石膏晶体的形成具有一定的诱导作用。综合利用"水溶液法"和"蒸汽加压法"形成了具有特色的"汽液结合法"工艺制备α型半水石膏,通过添加不同种类、不同数量的转晶剂来观察并研究探讨石膏晶体的形成结构以及抗压性能。结果表明:复合掺加0.04%硫酸铝和0.08%磺化三聚氢胺(F10)的效果最好,抗压强度可以提高33.21%。Abstract： Hemi-hydrate gypsum usually grows into needle-shaped crystal without external interference. In order to change the shape of gypsum to stick-shaped crystal, medium crystal agent was added to induce the growth habit. “Steam combined liquid technology” was used to produce α-hemi-hydrate gypsum instead of“liquid technology” and “steam technology”. The shape structure of gypsum was observed and the compression strength of product was studied by adding different kinds, different quantities of medium crystal agents. The results shows the gypsum added 0.04% aluminum sulfate and 0.08% sulfonated melocol （F10） has the best performance, which improve strength property by 33.21%.

关 键 词：脱硫石膏 Α型半水石膏 转晶剂 汽液结合法 

分 类 号：TQ177.3[化学工程—硅酸盐工业]