功能性离子液体[A336][Cyanex272]萃取分离宏量钨钼实验研究  

Separation of Macro Amounts of Tungsten and Molybdenum with SolventExtraction Using Task-specific Ionic Liquid [A336][Cyanex272]

作　　者：曹飞[1,2,3] 王威 魏德洲 Cao Fei;Wang Wei;We Dezhou(School of Resource and Civil Engineering,Northeastern University,Shenyang,Liaoning,China;Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Key Laboratory for Polymetallic Ores'Evaluation and Utilization,MNR,Zhengzhou,Henan,China;Key Laboratory of Comprehensive Utilization of Gold Resource in Henan Province,Zhengzhou,Henan,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]中国地质科学院郑州矿产综合利用研究所,自然资源部多金属矿综合利用评价重点实验室,河南郑州450006 [3]河南省黄金资源综合利用重点实验室,河南郑州450006

出　　处：《矿产综合利用》2021年第3期76-81,共6页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金(51504225);中国地质调查项目(DD20190625)资助。

摘　　要：为考察功能性离子液体三辛基甲基氯化铵二(2,4,4-三甲基戊基)膦酸盐[A336][Cyanex272]对高钼钨溶液中钨钼的萃取分离效果,以某工业料液(含16.27 g/L WO_(3)、9.10 g/L Mo)的模拟溶液为研究对象,详细研究了初始pH值、萃取剂浓度、O/A比等因素对钨钼分离的影响。实验结果表明,在水相初始pH值为6.0、[A336][Cyanex272]浓度为0.10 mol/L、O/A比为2.5:1的条件下,分离系数高达43.34。利用0.025 mol/L NaHCO_(3)溶液对负载有机相进行洗涤,钨可得到进一步富集,WO_(3)/Mo质量比从15.76增加到33.26;后续利用0.4 mol/L NaHCO_(3)溶液进行反萃,钼的反萃率接近100%,而钨的反萃率也高达80%以上。说明[A336][Cyanex272]可以有效地处理实际高钼钨溶液,其分离效果良好,并且反萃性能优异,是一种有工业应用潜力的萃取剂。The task-specific ionic liquid[A336][Cyanex272]was used for the separation of tungsten and molybdenum from a simulated solution of an industrial tungsten solution containing high molybdenum(16.27 g/L WO_(3)9.10 g/L Mo).The effect of initial pH of aqueous solution,extractant concentration,O/A ratio,etc.were studied.The optimum separation factor of 43.34 was obtained with an initial pH value of 6.0 at O/A 2.5:1 using 0.05 mol/L[A336][Cyanex272].Furthermore,W in the loaded organic phase was further concentrated by scrubbing with 0.025 mol/L NaHCO_(3),with an increase in WO_(3)/Mo mass ratio from 15.76 to 33.26.Afterwards,over 80% of W and almost 100% Mo were stripped by 0.4 mol/L NaHCO_(3) from the loaded organic phase.The experiments prove that[A336][Cyanex272]as extractant could effectively treat the industrial tungsten solution containing high molybdenum with good separation effect and excellent stripping performance,andit also has a great potential application.

关 键 词：功能性离子液体 [A336][Cyanex272] 钨钼分离 萃取 

分 类 号：TD952[矿业工程—选矿]