摘要
研究了N235从石煤硫酸浸出液中直接萃取钒的工艺参数,考察N235体积分数、萃取时间、萃取温度、相比等对钒萃取率的影响。结果表明,最佳萃取工艺参数为:N235体积分数40%、有机相与水相相比1∶4、25℃萃取6min,钒两级总萃取率为97.82%;以0.8mol/L的碳酸钠溶液为反萃剂、有机相与水相相比3∶1、在25℃反萃6min,钒两级总反萃率大于99%,钒与其他主要杂质元素分离。
Technological parameter of solvent extraction of vanadium from acid leaching solution of stone coal with amine extractant N235 was studied. The effects of volume fraction of N235, extraction time, extraction temperature, and phase ratio O/A （volume ratio of organic phase to water phase） on vanadium extraction rate were investigated. The results show that the total extraction rate of vanadium after two-stage extraction is 97.82% under the optimum conditions including volume fraction of N235 of 40%, O/A =1/4, and extraction duration of 6 min at 25 ℃. The total extraction rate of vanadium after two-stage stripping is 99 % above under the optimum conditions including concentration of stripping agent （Na2CO3） of 0.8 mol/L, O/A=3/1, extraction duration of 6 min at 25 ℃. Vanadium can be separated effectively from major impurities.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2015年第4期34-37,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51404177)
湖北省自然科学基金项目(2014CFB857)
关键词
钒
酸浸液
萃取
N235
vanadium
acid leaching solution
extraction
N235
作者简介
曹威（1990-），男，湖北宜昌人，硕士研究生；
通信作者：张一敏（1954-），男，河南许昌人，教授，博导．
