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首页> 外文期刊>The Korean journal of chemical engineering >Extraction of copper from copper slag: Mineralogical insights, physical beneficiation and bioleaching studies
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Extraction of copper from copper slag: Mineralogical insights, physical beneficiation and bioleaching studies

机译：从铜渣中提取铜：矿物学见解，物理选矿和生物浸出研究

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摘要

Copper slag was subjected to in-depth mineralogical characterization by integrated instrumental techniques and evaluated for the efficacy of physical beneficiation and mixed meso-acidophilic bioleaching tests towards recovery of copper. Point-to-point mineral chemistry of the copper slag is discussed in detail to give better insight into the association of copper in slag. Characterization studies of the representative sample revealed the presence of fayalite and magnetite along with metallic copper disseminated within the iron and silicate phases. Physical beneficiation of the feed slag (～0.6% Cu) in a 2 L. working volume flotation cell using sodium isopropyl xanthate resulted in Cu beneficiation up to 2-4% and final recovery within 42-46%. On the other hand, a mixed meso-acidophilic bacterial consortium comprised of a group of iron and/or sulfur oxidizing bacteria resulted in enhanced recovery of Cu (～92-96%) from the slag sample. SEM characterization of the bioleached slag residue also showed massive coagulated texture with severe weathered structures. FE-SEM elemental mapping with EDS analysis indicated that the bioleached residues were devoid of copper.
机译：通过综合仪器技术对铜渣进行了深入的矿物学表征，并评估了物理选矿和混合中嗜酸性生物浸出试验对铜回收的功效。详细讨论了铜渣的点对点矿物化学，以更好地了解铜渣中的缔合。对代表性样品的表征研究表明，铁橄榄石和磁铁矿以及在铁和硅酸盐相中散布的金属铜均存在。使用异丙基黄原酸钠在2升工作容积浮选槽中对矿渣（约0.6％Cu）进行物理选矿，导致Cu选矿高达2-4％，最终回收率在42-46％之内。另一方面，由一组铁和/或硫氧化细菌组成的混合中嗜酸性细菌财团可提高矿渣样品中铜的回收率（〜92-96％）。 SEM表征的生物浸出炉渣残渣还显示出大量凝结的质地，并具有严重的风化结构。用EDS分析的FE-SEM元素图谱表明，生物浸出的残留物不含铜。

著录项

  • 来源
    《The Korean journal of chemical engineering》 |2015年第4期|667-676|共10页
  • 作者

    Sandeep Panda; Srabani Mishra; Danda Srinivas Rao; Nilotpala Pradhan; Umaballava Mohapatra; Shivakumar Angadi; Barada Kanta Mishra;

  • 作者单位

    Department of Bioresources Engineering, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India,North Orissa University (NOU), Baripada-757003, Odisha, India;

    Department of Bioresources Engineering, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India;

    Department of Mineral Processing, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India;

    Department of Bioresources Engineering, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India;

    North Orissa University (NOU), Baripada-757003, Odisha, India;

    Department of Mineral Processing, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India;

    Department of Bioresources Engineering, CSIR-Institute of Minerals and Materials Technology (IMMT),Bhubaneswar-751013, Odisha, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Copper Slag; Characterization; Microscope; Physical Beneficiation; Bioleaching;

    机译：铜渣表征;显微镜;物理选矿;生物浸出;

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