摘要
研究了钨精矿碱浸出液中锡的存在形式及钨锡分离。试验结果表明,浸出液的pH对锡的存在形式有较大影响,溶液pH值越高,SnS_3^(2-)存在比例越低;沉淀剂M115能够高效地从钨酸钠溶液中将SnSi_3^(2-)选择性去除,除锡率随试剂用量增加和反应时间延长而增大,随反应温度升高而降低。在试剂用量为理论用量6倍、室温条件下搅拌1h,锡去除率可达90%以上。
Several problems such as stannum presence states and removing of stannum from alkaline leaching solution of tungsten concentrate ore are studied. The result shows that stannum presence states and their proportion are distinctly influenced by pH value of leaching solution. The higher the pH value of leaching solution, the lower the proportion of SnS3^2-. The SnS3^2- can be removed selectively from the solution by precipitator M115. The removing rate of stannum can be enhanced by increasing dosage of precipitator, prolonging reaction time and decreasing reaction temperature. The removing rate of stannum is over 90% when practical dosage of precipitator is 6 times of theoretical dosage and stirring time is 1 h at room temperature.
出处
《湿法冶金》
CAS
2008年第2期84-86,共3页
Hydrometallurgy of China
关键词
钨精矿
浸出液
钨
锡
分离
tungsten concentrate ore
alkaline leaching solution
stannum
separation
