钨酸盐溶液中除钼砷锑锡等杂质的研究  

Removal of Mo, As, Sb and Sn from tungstate solution

作　　者：李洪桂[1] 孙培梅[1] 李运姣[1] 赵中伟[1] 苏鹏抟 刘茂盛[1] 

机构地区：[1]中南工业大学冶金科学与工程系,长沙410083

出　　处：《中国有色金属学报》2000年第4期539-541,共3页The Chinese Journal of Nonferrous Metals

基　　金：湖南省自然科学基金

摘　　要：应用合成的改进型试剂M115 a,研究了从钨酸盐溶液中选择性沉淀除钼、砷、锡、锑等杂质的新工艺。小型试验证明其除杂效果比用M115有大幅度提高 ,在温度为 2 0～ 6 0℃ ,沉淀剂M115 a的用量为理论量的 3～ 4倍以及保温时间为 1h时 ,对含WO3 为 2 10 g/L ,Mo为 0 .6 g/L ,As,Sb ,Sn各为 0 .2g/L的 (NH4 ) 2 WO4 溶液 ,最终的纯溶液中Mo和WO3 的浓度比小于 0 .5× 10 -4 ,同时溶液中的砷、锡、锑也大部分被除去 ,WO3 回收率大于99.9%。在结晶率为 90 %左右时 ,所得APT中上述杂质的含量全部符合GB10 116 88 APTO级标准。According to the difference between tungsten compound and compounds of molybdenum, arsenic, antimony and tin, a novel process for selective precipitation of Mo, As, Sb and Sn from tungstate solution has been developed by means of the precipitating agent M 115 a , with the (NH 4) 2WO 4 solution containing WO 3, Mo, As, Sn and Sb of ρ WO 3 , ρ Mo , ρ As , ρ Sn and ρ Sb were 210, 0.6, 0.15, 0.15 and 0.05 g/L respectively, more than 99% of the Mo and most of As, Sb, Sn could be removed under the condition of 50 ℃, 1 h and the amount M 115 a , 3～4 times of stoichiometric amount, the Mo/WO 3 in the purified solution is lower then 0.5×10 -4 , and the recovery of WO 3 is more than 99.9%. This process has been adopted in 5 tungsten plants in our country. And industrial practice has proved that it is more effective than the traditional process.

关 键 词：钨钼分离 选择性沉淀 钨冶金 除杂 钨酸盐溶液 

分 类 号：TF841.103[冶金工程—有色金属冶金]