N1923萃取钒渣无焙烧浸出液中钒的实验探究  

Extraction of vanadium from the leaching solution from converter vanadium slag without roasting using N1923

作　　者：张莹[1] 张廷安[1] 

机构地区：[1]东北大学多金属共生矿生态化利用教育部重点实验室,沈阳110819

出　　处：《有色金属科学与工程》2015年第6期14-19,共6页Nonferrous Metals Science and Engineering

基　　金：国家863计划资助项目(2012AA062303);国家自然科学基金资助项目(51504059)

摘　　要：针对传统提钒技术中焙烧段能耗巨大和污染严重等问题,提出了用钛白废酸为浸出剂,无焙烧加压浸出钒渣的新工艺.通过正交设计实验及单因素实验考察N1923对此工艺体系中浸出液中钒萃取的状况.正交试验结果表明,常温下,20%N1923-5%仲辛醇-75%磺化煤油体系中,水相初始pH=1.4,水相有机相体积比(V_A/V_O)=1∶3,萃取时间为2 min时,钒单级萃取率可达77.69%以上,经4级逆流萃取,钒总萃取率达99.9%,并与杂质元素分离效果明显.In view of the high consumption and contamination of traditional vanadium extraction technology, a new process of leaching the converter vanadium slag with titanium dioxide waste without roasting was proposed. A orthogonal design and single factor experiments had been made to research the influence of each factor for vanadium extraction by primary amine N1923 in the leaching solution,the result showed that under conditions： ambient temperature,leaching solution original pH=1.4, phase ratio （VA/VO）=1：3, shaking time=2 min, the single-stage extraction rate of V can be more than 77.69 %, 4 stage counter-current extraction can reach 99.9 % meanwhile the separation rates between V and other elements can achieve a high level in the 20 % N1923-5 % octanol - sulfonated extraction system.

关 键 词：钒渣 无焙烧 加压浸出 萃取 正交试验 

分 类 号：TF841.3[冶金工程—有色金属冶金]