盐酸法湿法磷酸工艺研究进展  

Research advances in wet-process phosphoric acid process by hydrochloric acid

作　　者：张文静 张建刚[2] 陈烨[1] 刘晶晶 ZHANG Wen-jing;ZHANG Jian-gang;CHEN Ye;LIU Jing-jing(School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;Institution of Supervision and Inspection Product Quality of Guizhou Province,Guiyang 550016,China;College of Chemistry and Materials Science,Guizhou Normal University,Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州省产品质量监督检验院,贵州贵阳550016 [3]贵州师范大学化学与材料科学学院,贵州贵阳550025

出　　处：《应用化工》2019年第1期193-196,共4页Applied Chemical Industry

基　　金：中央引导地方科技发展专项资金项目(黔科中引地(2017)4010)

摘　　要：介绍了盐酸法湿法磷酸的工艺流程,重点阐述了盐酸法湿法磷酸工业化生产所需解决的磷酸萃取净化、氯化钙副产物资源化利用和设备腐蚀的技术难点。并分析了盐酸法在国内尚未实现工业化生产的原因。最后指出,盐酸法湿法磷酸兼具成本低、对磷矿品位要求低、副产物氯化钙易于资源化利用等优点,随着环保要求日趋严格,将会迅速受到重视和推广应用。The technological process of wet-process phosphoric acid production by using hydrochloric acid is introduced.Extraction purification of phosphoric acid,resource utilization of calcium chloride by-product and equipment corrosion are technical difficulties in the production,so they are emphatically described.Moreover,the reason why hydrochloric acid method failed to achieve large-scale industrial production is also analyzed.Finally,it is pointed out that the hydrochloric acid method has advantages of low cost,low requirement of phosphate grade,easy utilization of by-product calcium chloride and so on.With the increasingly strict environmental protection requirements,hydrochloric acid method will get more attention and be more widely applied.

关 键 词：盐酸法 湿法磷酸工艺 溶剂萃取 氯化钙 设备腐蚀 

分 类 号：TQ44[化学工程—化学肥料工业]