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《n235-煤油支撑液膜体系中钒萃取分离性能研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、doi:10.3969/j.issn.1007-7545.2018.06.009N235-煤油支撑液膜体系中钒萃取分离性能研究罗大双1,2,3,黄晶1,2,3,张一敏1,2,3,4,刘红1,2,3,刘涛1,2,3(1.武汉科技大学资源与环境工程学院,武汉430081;2.湖北省页岩钒资源高效清洁利用工程技术研究中心,武汉430081;3.钒资源高效利用湖北省协同创新中心,武汉430081;4.武汉理工大学资源与环境工程学院,武汉430070)摘要:研究了以N235为载体的支撑液膜体系从钒页岩酸浸液中直接萃取钒时,载体浓度、稀释剂种类、反
2、萃剂种类及浓度、浸出液pH对钒传质过程的影响,以及钒与浸出液中主要杂质离子Fe、P、Al的分离规律。研究表明,当支撑体膜孔径为0.22μm、Na2CO3作反萃剂且浓度为0.6mol/L、煤油为稀释剂、萃取剂浓度10%、料液相pH=1.8、萃取时间13h时,钒的萃取率可达87.73%,杂质离子铁、铝、磷相对于钒的分离系数分别为191.8、350.3、163.0,表明支撑液膜技术对分离富集钒有较好的效果。关键词:钒页岩;钒;支撑液膜;N235中图分类号:TF841.3文献标志码:A文章编号:1007-7545(2018)06-0000-00
3、StudyonSeparationPerformanceofVanadiuminN235-KeroseneSupportedLiquidMembraneSystemLUODa-shuang1,2,3,HUANGJing1,2,3,ZHANGYi-min1,2,3,4,LIUHong1,2,3,LIUTao1,2,3(1.SchoolofResourcesandEnvironmentalEngineering,WuhanUniversityofScienceandTechnology,Wuhan430081,China;2.HubeiPr
4、ovincialEngineeringTechnologyResearchCenterofHighEfficientCleaningUtilizationforShaleVanadiumResource,Wuhan430081,China;3.HubeiProvincialCollaborativeInnovationCenterforHighEfficientUtilizationofVanadiumResource,Wuhan430081,China;4.SchoolofResourcesandEnvironmentalEngine
5、ering,WuhanUniversityofTechnology,Wuhan430070,China)Abstract:Effectsofcarrierconcentration,diluenttype,strippertypeandconcentration,andpHvalueofsolutiononvanadiumextractionfromsimulatedquartzacidleachatewithN235asextractionwerestudied.SeparationofFe,PandAlfromvanadiumand
6、leachingsolutionwasinvestigated.Theresultsshowthatextractionrateofvanadiumis87.73%undertheoptimumconditionsincludingporesizeofthesupportmembraneof0.22μm,strippingagentconcentrationofNa2CO3of0.6mol/L,keroseneasdiluents,extractantconcentrationof10%,pHvalueoffeedsolutionof1
7、.8,andextractiontimeof13h.Separationcoefficientsofimpurityionsiron,aluminumandphosphorusrelativetovanadiumare191.8,350.3and163.0respectively,whichindicatesthatsupportingliquidmembranetechnologyhasbettereffectonseparationandenrichmentofvanadium.Keywords:vanadiumshale;vana
8、dium;supportedliquidmembrane;N235钒以类质同像[1]形式稳定存在于云母中,为了破坏钒在云母中的存在形式,多采用高温高酸浸出体系,因其选择性不高,杂质离子也随着钒的浸出而被溶出