用氟化法沉淀脱除硫酸钴溶液中Ca2+、Mg2+的方法  

Remove of Ca2+, Mg2+ in Cobalt Sulfate Solution by Precipitation of Fluorination Method

作　　者：彭学斌 田林[1,2] 杨振 翟忠标 曲涛[3] 戴永年 谢刚[1,2] PENG Xue-bin;TIAN Lin;YANG Zhen;ZHAI Zhong-biao;QU Tao;DAI Yong-nian;XIE Gang(Kunming Metallurgical Research Institute,Kunming,Yunnan 650031,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming,Yunnan 650031,China;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming,Yunnan 650093,China)

机构地区：[1]昆明冶金研究院,云南昆明650031 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650031 [3]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《云南冶金》2019年第5期50-54,共5页Yunnan Metallurgy

摘　　要：研究了用氟化法沉淀脱除硫酸钴溶液中Ca^2+、Mg^2+的方法,该方法用NaF作沉淀剂,考察了NaF用量,反应终点pH值,反应温度,搅拌转速等因素对CoSO4溶液中Ca^2+、Mg^2+脱出率的影响。试验结果表明,在NaF加入量为Ca^2+、Mg^2+摩尔理论总量的4倍,终点pH值5.5~6.0,反应温度80℃~90℃,搅拌转速300 r/min,反应时间1 h,到达终点pH值后,稳定0.5 h的条件下,Ca^2+、Mg^2+脱除率分别可达到96.67%,99.54%;Co损失率可以控制在2%以内。The study on Remove of Ca^2+,Mg^2+in cobalt sulfate solution by Precipitation of fluorination method is carried out,in the method,NaF is taking as the precipitating agent,The effect of NaF dosage,pH value of reaction endpoint,reaction temperature,stirring speed and the other factors on removing rate of Ca^2+、Mg^2+in CoSO4 solution is studied.The test results show,when the addition amount of NaF is 4 times of total Moore theoretical amount of Ca^2+、Mg^2+,the pH value of endpoint is 5.5~6.0,the reaction temperature is 80℃~90℃,the stirring speed is 300 r/min,the reaction time is 1 hour,and with the conditions that the final pH value is reached,and stable for 0.5 hour,the removal rate of Ca^2+、Mg^2+can reach to 96.67%,99.54%separately;the loss ratio of Co can be controlled in 2%.

关 键 词：NAF 沉淀 脱除率 钴损 

分 类 号：TF816[冶金工程—有色金属冶金]