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硫磷混酸体系中钒的萃取实验研究
引用本文:朱军,王毅,李欣,薛娟琴,李营生.硫磷混酸体系中钒的萃取实验研究[J].稀有金属,2011,35(1).
作者姓名:朱军  王毅  李欣  薛娟琴  李营生
作者单位:西安建筑科技大学冶金工程学院,陕西,西安,710055
基金项目:国家自然科学基金,陕西省重点学科冶金物理化学资助项目
摘    要:以某高磷钒矿直接活化硫酸浸出并经预净化的溶液作为研究对象,用N263进行萃取反萃后经过直接沉钒,制得V2O5产品.实验主要研究了水相平衡pH、萃取剂浓度、添加剂浓度、相比、逆流萃取及反萃级数对硫磷混酸体系中钒萃取率的影响.实验确定了N263最佳萃取工艺条件:有机相浓度取15%N263-5%仲辛醇-磺化煤油,O/A=1:3,常温振荡10 min,常温静置10 min,萃取平衡pH=2,经5级逆流萃取,钒的萃取率可达99.51%;最佳反萃工艺条件:反萃剂浓度取1 mol·L-1 NH4 OH4 mol·L-1 NaCl,O/A=3:1,常温振荡10 min,常温静置10 min,反萃平衡pH=8.5,经4级逆流反萃,钒的反萃率可达99.58%;经直接沉钒所得V2O5产品质量达到99.54%,符合GB3283-87V2O598质量要求.

关 键 词:  萃取

Extraction of Vanadium from Sulfuric and Phosphoric Acid Solution
Zhu Jun,Wang Yi,Li Xin,Xue Juanqin,Li Yingsheng.Extraction of Vanadium from Sulfuric and Phosphoric Acid Solution[J].Chinese Journal of Rare Metals,2011,35(1).
Authors:Zhu Jun  Wang Yi  Li Xin  Xue Juanqin  Li Yingsheng
Affiliation:Zhu Jun,Wang Yi,Li Xin,Xue Juanqin,Li Yingsheng(School of Metallurgy,Xi'an University of Architecture and Technology,Xi'an 710055,China)
Abstract:The leaching solution by directly activated acid leaching and pre-purifying the high phosphorus vanadium ore was taken as the research object,which was extracted with N263 and back-extracted,the vanadium pentoxide product was obtained by direct precipitation.The influence factors such as aqueous phase equilibrium pH,extractant concentration,additive concentration,O/A,countercurrent extraction and back-extraction stages on vanadium extraction rate in sulfuric and phosphoric acid solution were studied.The res...
Keywords:N263
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