非烧结磷石膏砖的制备研究  

RESEARCH ON THE PREPARATION OF NON-SINTERED PHOSPHOGYPSUM BRICK

作　　者：叶路生[1,2] 柳伟[1,2] 罗郅清[1,2] 陈文清[1,2] 

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]川大-日立环境应用研究中心,成都610065

出　　处：《环境工程》2013年第S1期568-569,564,共3页Environmental Engineering

摘　　要：以磷石膏为主要原料,辅以粉煤灰、生石灰、河砂等制备非烧结磷石膏砖,探索较优的物料配比及操作条件;设定操作条件为砖坯成型压力20 MPa、105℃下干燥12 h,通过120℃,0.105 MPa的蒸汽养护4 h;最优物料配比为m(磷石膏量)∶m(粉煤灰量)∶m(河砂量)∶m(生石灰量)∶m(成型水量)=1∶0.5∶0.2∶0.15∶0.25。制品强度可达MU10级;制品无浸出毒性风险。It was the use of phosphogypsum as main raw material to make non-sintered phosphogypsum brick and explore the better material ratio and operating conditions; The operating conditions were set as briquetting pressure 20MPa,drying temperature 105 ℃,drying time 12 h,vapour pressure 0. 105 MPa,curing temperature 120 ℃,curing time 4 h. The optimal material ratio was phosphogypsum∶fly ash ∶sand ∶quick lime ∶molding water 1∶0. 5∶0. 2∶0. 15∶0. 25. The compressive strength of the product reached grade MU10. There was no leaching toxicity in the product.

关 键 词：磷石膏 粉煤灰 非烧结砖 机理分析 浸出毒性 

分 类 号：TQ177.3[化学工程—硅酸盐工业]