Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (3): 17-21.doi: 10.3969/j.ssn.1000-565X.2011.03.004

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Extraction of Molybdenum and Rhenium from Electro-oxidation Lixivium of Molybdenite

Cao Zhan-fang1,2  Zhong Hong1  Jiang Tao2  Qiu Zhao-hui1  Liu Guang-yi1   

  1. 1．School of Chemistry and Chemical Engineering，Central South University，Changsha 410083，Hunan，China；2．School of Minerals Processing and Bioengineering，Central South University，Changsha 410083，Hunan，China
  • Received:2010-07-16 Revised:2010-09-13 Online:2011-03-25 Published:2011-02-01
  • Contact: 钟宏(1961-)，男，教授，博士生导师，主要从事选冶药剂的分子设计与绿色合成、化工冶金等研究 E-mail:zhongh@ mail．csu．edu．cn
  • About author:曹占芳(1980-)，男，博士后，主要从事资源化工、环境工程研究
  • Supported by:

    国家“十一五”科技支撑项目(2007BAB22B01)

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Abstract:

The electro-oxidation is an environment-friendly hydrometallurgy technique of extraction from molybde-nite concentrate,with moderate reacting conditions and high metal recovery.In this paper,aiming at the key step of the technique,namely the separation of Mo（Ⅵ） and Re（Ⅶ）,some experiments were performed.The results show that,when the mixture of 30% N235＋20% sec-caprylic alcohol＋50% kerosene oil is used as the extractant for the extraction with a W/O ratio of 1∶2 and an acidity of 59g/L HCl at room temperature,the single-stage extraction rates of Mo（Ⅵ） and Re（Ⅶ） respectively reach 99.95% and 95.76%;and that,when 17% ammonia is used as the stripping agent for the stripping with a W/O ratio of 2∶1 at room temperature,the stripping rates respectively reach 99.49% and 98.35%.

Key words: Electro-oxidation, molybdenite, lixivium, extraction, stripping