摘要
对“选择性沉淀法从钨酸盐溶液中除钼”新工艺进行了工业试验。结果表明 :对处理含WO3 130～ 2 44 g/L ,含钼 0 .5 35～ 2 .5 5g/L的工业钨酸铵溶液 ,除钼后净液中Mo/WO3 达到 2 .0 0× 10 -5～ 9.12× 10 -5,除钼率达97.41%～ 99.6 4% ,同时还能有效除去Sn等杂质 ;当结晶率为 95 %以上时 ,产品APT的质量完全达到GB10 116 88APT 0级标准。本技术可大大简化APT结晶母液的处理 ,与经典的处理结晶母液工艺相比 ,母液中WO3 回收率提高 5 %以上 ,NH4 Cl的利用率达 6 0 %～ 70 % ,三废排放量减少 6 0 %～ 70 %。
The commercial scale test was conducted for impurity molybdenum removal from tungstate solution by selective precipitation method. The results show that after commercial (NH 4) 2WO 4 solutions containing 130～244?g/L WO 3 and 0.535～2.55?g/L Mo are treated, the Mo/WO 3 ratio in purified solution is 2.00×10 -5 ～9.12×10 -5 and the Mo removal rate can reach 97.41%～99.64%. Impurity Sn can be removed simultaneously. The quality of product APT obtained after the evaporation crystallization of purified (NH 4) 2WO 4 solution can conform to GB10116 88APT 0 standard at 95.0%～98.0% crystallization rate. The treatment process of APT crystal liquor is simplified significantly using the technology. The increase of WO 3 recovery rate is over 5% in comparison with classical processes and the utilization ratio of NH 4Cl is 60%～70%. The practice has expressed that the technology has outstanding characteristics of good adaptability for raw materials, simple process and equipments, high metal recovery and good economics profits.[
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第3期499-502,共4页
The Chinese Journal of Nonferrous Metals
基金
湖南省自然科学基金资助项目 ( 97JJY10 0 4)
关键词
钨酸盐溶液
钨钼分离
选择性沉淀
除钼
工业试验
炼钨
tungstate solution
separation of Mo from tungstate solution
selective precipitation
