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某钒矿酸法提钒新工艺试验研究
引用本文:曹耀华,杨绍文,高照国,刘红召,李琦.某钒矿酸法提钒新工艺试验研究[J].矿产综合利用,2008(5).
作者姓名:曹耀华  杨绍文  高照国  刘红召  李琦
作者单位:中国地质科学院郑州矿产综合利用研究所,河南,郑州,450006;国家非金属矿资源综合利用工程技术研究中心,河南,郑州,450006
摘    要:针对某大型页岩钒矿现行提钒工艺存在问题及该资源特点,确定采用两段逆流硫酸溶液浸出-中和-还原-萃取-铵盐沉钒的工艺。试验结果表明:在原料粒度为-120目、浸出液固比为1、浸出温度为90℃时,V2O5浸出率大于75%;用于富集浸出液中钒的萃取体系为15%P204+10%TBP+75%磺化煤油;该工艺提取V2O5总回收率大于70%,产品中V2O5含量大于99%。

关 键 词:钒矿  逆流浸出  萃取

Experimental Research on the New Technology for Extracting Vanadium from a Vanadium Mineral by Acid Leach Process
CAO Yao-hua,YANG Shao-wen,GAO Zhao-guo,LIU Hong-zhao,LI Qi.Experimental Research on the New Technology for Extracting Vanadium from a Vanadium Mineral by Acid Leach Process[J].Multipurpose Utilization of Mineral Resources,2008(5).
Authors:CAO Yao-hua  YANG Shao-wen  GAO Zhao-guo  LIU Hong-zhao  LI Qi
Abstract:Directed toward the problems existing in current technologies for extracting vanadium and the characteristics of the mineral resources,a new technology of two-stage countercurrent leaching by sulfuric acid-neutralization-reduction-extraction and precipitating vanadium by ammonium salt was developed.Test results showed that under the conditions of particle size of raw material is less than 125μm,the ratio of liquid to solid is 1,the leaching temperature is 90℃,the leaching rate of vanadium is higher than 75%.The extraction system used for enriching vanadium in the leach liquor is composed of 15% P204+10% TBP+75% sulfonated kerosene.The total recovery of V2O5 is higher 70% and the content of V2O5 in the product is more than 99%.
Keywords:Vanadium mineral  Countercurrent leaching  Extraction
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