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首页> 外文期刊>RSC Advances >Electrolytic recovery of bismuth and copper as a powder from acidic sulfate effluents using an emew (R) cell
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Electrolytic recovery of bismuth and copper as a powder from acidic sulfate effluents using an emew (R) cell

机译：铋和铜的电解回收作为来自酸性硫酸盐流出物的粉末，使用EMEW（R）细胞

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摘要

Effective removal of bismuth is a primary concern during copper electrorefining. A novel electrowinning process using an emew(R) cell was developed to recover bismuth and copper from a copper electrorefining waste stream. Significant removal and co-deposition of copper and bismuth were achieved from a highly acidic sulfate industrial effluent using a current density of 350 A m(-2), but the current efficiency was low (27%). Operating at a lower current density (75 A m(-2)) facilitated the preferred removal of Cu, while increasing current efficiency to 67.4% due to the decrease of aside-reaction. Consequently, a two-stage process was employed to remove most of the copper at low current and then extract bismuth at high current. 93.4% of the bismuth and 97.8% of the copper were recovered with a satisfactory current efficiency, and a high purity (similar to 98%) Bi powder was obtained in the second step. This novel emew(R) cell approach may serve as a promising alternative for recovering copper and bismuth, and the proposed two step strategy may offer insight for the selective recovery of metals in a multi-component system.
机译：有效去除铋是铜电器期间的主要问题。开发了一种使用EMEW（R）细胞的新型电动缠绕工艺以从铜电气化废物流中回收铋和铜。使用电流密度为350A（-2），从高度酸性的硫酸盐工业流出物中显着去除和共沉积铜和铋，但电流效率低（27％）。在较低电流密度下操作（75 A m（-2））促进优选的Cu，而由于旁边反应的降低，将电流效率提高至67.4％。因此，使用两级方法以在低电流下除去大部分铜，然后在高电流下提取铋。以令人满意的电流效率回收93.4％的铋和97.8％的铜，并在第二步中获得高纯度（类似于98％）Bi粉末。这种新的EMEW（R）细胞方法可以作为回收铜和铋的有希望的替代方案，并且所提出的两个步骤策略可以提供对多组分系统中金属选择性恢复的见解。

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  • 来源
    《RSC Advances》 |2015年第62期|共7页
  • 作者

    Jin Wei; Laforest Paul I.; Luyima Alex; Read Weldon; Navarro Luis; Moats Michael S.;

  • 作者单位

    Missouri Univ Sci &

    Technol Mat Res Ctr Rolla MO 65409 USA;

    Missouri Univ Sci &

    Technol Mat Res Ctr Rolla MO 65409 USA;

    Missouri Univ Sci &

    Technol Mat Res Ctr Rolla MO 65409 USA;

    ASARCO Amarillo TX 79106 USA;

    ASARCO Amarillo TX 79106 USA;

    Missouri Univ Sci &

    Technol Mat Res Ctr Rolla MO 65409 USA;

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  • 正文语种 eng
  • 中图分类 化学;
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