【摘 要】
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The extraction of vanadium (Ⅳ) from acidic leaching liquor of stone coal using Di(2-ethylhexyl) phosphate (D2EHPA) and tributyl phosphate(TBP) mixed solven
【机 构】
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Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology,Kun
【出 处】
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第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
论文部分内容阅读
The extraction of vanadium (Ⅳ) from acidic leaching liquor of stone coal using Di(2-ethylhexyl) phosphate (D2EHPA) and tributyl phosphate(TBP) mixed solvent system has been investigated in detail.The effects of concentration of organic extractant, time for equilibration, acid concentration in the feed, and O/A ratio were studied.The results demonstrate that the extraction of V (Ⅳ) increase with the extractant concentration in the organic phase, as well as the equilibrium pH value.Extraction isotherms was obtained using the solvent mixture consisting of 15 vol.% D2EHPA and 5 vol.% TBP in kerosene with acidic leaching liquor, The loaded organic phases stripping with 1.5mol/L H2SO4 at 40℃.The extraction behavior of other associated elements, such as iron, aluminum,magnesium, calcium, and Phosphorus were also studied.
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