净化湿法磷酸副产萃余酸脱镁技术研究现状  

Research status of technology for removing magnesium from residual acid after purification of wet-process phosphoric acid

作　　者：石通杉 杨俊 刘旭 谢娟 SHI Tongshan;YANG Jun;LIU Xu;XIE Juan(State Key Laboratory of Efficient Utilization of Medium and Low Grade Phosphate Rock and Its Associated Resources,Guiyang 550014,China;Wengfu(Group)Co.,Ltd.,Guiyang 550001,China)

机构地区：[1]中低品位磷矿及其共伴生资源高效利用国家重点实验室,贵州贵阳550014 [2]瓮福(集团)有限责任公司,贵州贵阳550001

出　　处：《生态产业科学与磷氟工程》2024年第10期21-24,共4页Eco-industry Science & Phosphorus Fluorine Engineering

基　　金：贵州省科技计划项目(黔科合中引地[2023]004)。

摘　　要：随着净化湿法磷酸装置扩产扩能,副产物萃余酸产生量也在逐年增加,但萃余酸因成分复杂、倍半氧化物含量高,难以被高效利用,尤其杂质中的镁离子更是限制了其利用方向。分析萃余酸的组成及镁离子杂质对其利用的影响。对比分析化学沉淀法、pH调节法、膜分离净化法脱镁的应用及优劣势,并针对萃余酸脱镁提出建议。With the expansion of production and capacity of purified wet-process phosphoric acid plant,the amount of by-product residual acid is also increasing year by year.However,the residual acid is difficult to efficiently utilize due to its complex composition and high content of sesquioxides,especially the magnesium ions limit its utilization direction.The composition of residual acid and the impact of magnesium ion on its utilization are analyzed.The application,advantages and disadvantages of chemical precipitation method,pH adjustment method and membrane separation purification method for magnesium removal are compared and analyzed,and rational suggestions are proposed for magnesium removal from residual acid.

关 键 词：萃余酸净化 脱镁 对比分析 建议 

分 类 号：TQ126.35[化学工程—无机化工]