萃取法从含钒酸浸液中提取钒的研究.pdf

20 HENAN CHEM ICAL INDUSTRY 2007 24 萃取法从含钒酸浸液 中提取钒的研究 曹耀华 , 高照国, 刘红召, 李 琦 (, 450006) : 主要论述对豫西某地石煤钒矿硫酸浸液的后序处理试验研究, 针对该料液的特点 行多种研究方案对比, 最终确立浸出液中和 还原 H ( C H ) PO (以下简写为 P204)萃取 硫酸反萃取 氧化沉钒技术路线, 采用 8 17 2 4 15% P204+ 10% TBP+ 75% 煤油为萃取体系, 1. 5 mol/L 硫酸溶液为反萃剂该工艺得到的产品, 其质量达到 GB3283- 87的冶金 99标准, 处理过程中钒回收率为 93. 2% : 酸浸液 ; 中和 ; 还原 ; 萃取 ; 五氧化二钒 : T 028. 9 : A : 1003- 3467( 2007) 06- 0020- 04 Study on Vanadium Extraction from Vanadium A cid Leaching Solution CAO Y ao- hua , GAO Zhao- guo , LIU H ong- hao, L I Q i (Zhengzhou Institute ofMultipurposeUtilization ofM ineralResources, CAGS, Zhengzhou 450006, China) Abstract: The process of vanadium extraction from acid leaching solution is discussed. The process is suitable for a kind of stone coalm ineral in thewest ofH enan province. Severalprograms are contrasted by expermi ents and the process thatneutralization- deoxidization- P204 extraction- stripping w ith sul furic acid- oxidization - V O deposition is proved the best route. In the process, extraction system is 2 5 15% P204+ 10% TBP+ 75% coaloil and 1. 5mol/L sulfuric acid solution is stripping agent, the quality of production obtained by this process can reach GB3283- 87 m etallurgy 99 standard and the recovery rate of vanadium is 93. 2%. K ey words: leaching solution; neutralization; deoxidization; extraction; vanadium pentoxide ; pH 1 ,, [2] , 15% , , , , () ( g/L g/L), ,, ,