摘要
以陕西山阳石煤钒矿作为研究对象,实验研究了磷酸二异辛酯(P204)对硫酸浸出溶液体系中钒的萃取工艺。主要考察了P204体积分数、pH值、萃取时间、萃取级数及有机相与水相体积比等因素对钒萃取率的影响。确定了萃取的最佳工艺参数:P204体积分数20%,磷酸三丁酯(TBP)5%,磺化煤油75%,萃取平衡pH值在2.5左右,相体积比为1∶5,萃取时间为5 min,萃取级数为5级。在此条件下萃取含钒2.965 8 g/L溶液,萃取率可达98.57%。
Taking the stone coal in Shanyang of Shaanxi as objective,the extraction process of vanadium in the sulphuric acid solution leaching system with bis（2-ethylhexyl） phosphate（P204） was studied.The influences of volume fraction of P204,pH,extraction time,extraction series,phase ratio（volume ratio of organic phase to water phase） on the extraction ratio of vanadium were investigated.The optimal technical parameters are determined as follows： volume fraction of P204 is 20%,tributyl phosphate（TBP） is 5%,sulphonated kerosene is 75%,pH is 2.5,phase volume ratio is 1∶5,extraction time is 5 min,extraction series is 5.Under such condition,the extraction rate of vanadium can reach 98.57% from the solution containing vanadium of 2.965 8 g/L.
出处
《化学工程》
CAS
CSCD
北大核心
2010年第10期146-149,共4页
Chemical Engineering(China)
基金
陕西省"13115"科技创新工程计划项目(2007ZDGC-11)
西安建筑科技大学青年科技基金项目(QN0918)
关键词
P204
钒
萃取
硫酸
P204
vanadium
extraction
sulphuric acid
