水解中和法制备镍过程废液处理回收的工艺研究  

Research on the Process of Treating and Recovering Waste Liquid from the Preparation of Nickel by Hydrolysis Neutralization Method

作　　者：王晶[1] 周红艳[1] 高林华 姜雪 王珂 Wang Jing;Zhou Hongyan;Gao Linhua;Jiang Xue;Wang Ke(Institute of Physical and Chemical Engineering of Nuclear Industry,Science and Technology on Particle Transport Separation Laboratory,Tianjin,300180)

机构地区：[1]核工业理化工程研究院,粒子输运与富集技术全国重点实验室,天津300180

出　　处：《当代化工研究》2024年第21期163-165,共3页Modern Chemical Research

摘　　要：水解中和法制备镍的产率为70%~80%,其中10%~20%的镍溶解在废液中,造成镍元素损失,工艺产率低。分析了废液中镍离子的来源、成因及形式。研究了镍的回收方法及优化工艺条件:即采用水合肼和次亚磷酸钠还原;n(水合肼):n(镍)=4:1,n(次亚磷酸钠):n(镍)=2:1;加热温度为150℃;加热时间为2 h。经处理后镍的回收率>10%,镍的产率提高到90%以上。The yield of nickel prepared by hydrolysis and neutralization method is 70%~80%,of which 10%~20%nickel is dissolved in waste liquid,resulting in nickel element loss and low yield.The source,cause and form of nickel ions in waste liquid were analyzed in this paper.The recovery method and optimum process conditions of nickel were studied:reduction with hydrazine hydrate and sodium hypophosphite;n(hydrazine hydrate):n(nickel)=4:1,n(sodium hypophosphite):n(nickel)=2:1;heating temperature is 150℃;the heating time is 2 h.After treatment,the recov-ery rate of nickel was more than 10%,and the yield of nickel was increased to more than 90%.

关 键 词：镍制备 废液 回收 镍 

分 类 号：TL81[核科学技术—核技术及应用] TQ134.31[化学工程—无机化工]