复合溶剂萃取净化湿法磷酸  

Purification of Wet Process phosphoric Acid by Compounded Solvent

作　　者：倪双林[1] 方晓峰[1] 王志刚[1] 陈洪来[1] Ni Shuanglin;Fang Xiaofeng;Wang Zhigang;Chen Honglai(Yunnan Institute of Chemical Industry, Kunming 650228, China)

机构地区：[1]云南省化工研究院,云南昆明650228

出　　处：《云南化工》2017年第10期42-45,共4页Yunnan Chemical Technology

摘　　要：通过实验确定了复合溶剂中溶剂A和溶剂B的配比,以及萃取、洗涤、反萃段的相比以及各段的理论级数。实验结果表明,采用该工艺可以得到优于工业湿法净化磷酸标准的产品。磷酸萃取率大于75%,净化磷酸收率大于70%。The ratio of solvent A and solvent B in compound solvents was determined by experiment,and the phase ratio and the theoretical stage of extraction,washing,stripping were determined.The experimental results show that the product can be better than the industrial wet purification phosphoric acid standard by this process.Phosphoric acid extraction rate is greater than75%,purification phosphoric acid yield is greater than70%.

关 键 词：湿法磷酸 预处理 复合溶剂 萃取 净化 

分 类 号：TQ126.35[化学工程—无机化工]