Vanadium recovery from clay vanadium mineral using an acid leaching method
来源期刊：Rare Metals2008年第2期
论文作者：LI Haoran~a FENG Yali~b LIANG Jianglong~a LUO Xiaobing~b DU Zhuwei~a ~a State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing ,China ~b Civil and Environmental Engineering School,University of Science and Technology Beifing,Beijing ,China
文章页码：116 - 120
摘 要：<正>A technique including direct acid leaching,vanadium precipitation with alkaline,sodium hydroxide releaching,impurity removing by ad- justing pH value,precipitation vanadium with ammonium chloride,and vanadium pentoxide by masting steps was proposed according to the characteristic of Xichuan clay vanadium mineral.The factors influencing leaching vanadium such as temperature and the concentration of sulfuric acid were investigated and optimized.The experimental results indicate that the extract ratios of V205 can reach 94% and 92% at a sodium chlorate ratio of 3% and a manganese dioxide ratio of 3%,respectively.A completely chemical precipitation method was adopted to decontaminate and enrich the vanadium in the acid leaching solution.The X-my diffraction （XRD） pattern and the purity analysis of vana- dium pentoxide indicate that the purity of final vanadium pentoxide can reach 99% and meet the standard specifications.The total recovery can reach about 75%.The technique has.the characteristics of simplicity,less investment,and more environment safety as compared with the traditional salt masting method.
LI Haoran~a FENG Yali~b LIANG Jianglong~a LUO Xiaobing~b DU Zhuwei~a ~a State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100080,China ~b Civil and Environmental Engineering School,University of Science and Technology Beifing,Beijing 100083,China
摘 要：<正>A technique including direct acid leaching,vanadium precipitation with alkaline,sodium hydroxide releaching,impurity removing by ad- justing pH value,precipitation vanadium with ammonium chloride,and vanadium pentoxide by masting steps was proposed according to the characteristic of Xichuan clay vanadium mineral.The factors influencing leaching vanadium such as temperature and the concentration of sulfuric acid were investigated and optimized.The experimental results indicate that the extract ratios of V205 can reach 94% and 92% at a sodium chlorate ratio of 3% and a manganese dioxide ratio of 3%,respectively.A completely chemical precipitation method was adopted to decontaminate and enrich the vanadium in the acid leaching solution.The X-my diffraction （XRD） pattern and the purity analysis of vana- dium pentoxide indicate that the purity of final vanadium pentoxide can reach 99% and meet the standard specifications.The total recovery can reach about 75%.The technique has.the characteristics of simplicity,less investment,and more environment safety as compared with the traditional salt masting method.
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