METHOD AND APPARATUS FOR ELECTROWINNING COPPER USING THE FERROUS/FERRIC ANODE REACTION AND A FLOW-THROUGH ANODE

    公开(公告)号:US20060021880A1

    公开(公告)日:2006-02-02

    申请号:US11162341

    申请日:2005-09-07

    IPC分类号: C25C1/12

    CPC分类号: C25C1/12 C25C7/02

    摘要: The present invention relates, generally, to a method and apparatus for electrowinning metals, and more particularly to a method and apparatus for copper electrowinning using the ferrous/ferric anode reaction and a flow-through anode, such as, for example, a dimensionally stable carbon, carbon composite, metal-graphite, or stainless steel anode. In general, the use of a flow-through anode—coupled with an effective electrolyte circulation system—enables the efficient and cost-effective operation of a copper electrowinning system employing the ferrous/ferric anode reaction at a total cell voltage of less than about 1.5 V and at current densities of greater than about 26 Amps per square foot (about 280 A/m2), and reduces acid mist generation. Furthermore, the use of such a system permits the use of low ferrous iron concentrations and optimized electrolyte flow rates as compared to prior art systems while producing high quality, commercially saleable product (i.e., LME Grade A copper cathode or equivalent), which is advantageous.

    Method and apparatus for electrowinning copper using the ferrous/ferric anode reaction
    13.
    发明申请
    Method and apparatus for electrowinning copper using the ferrous/ferric anode reaction 失效
    使用亚铁/铁阳极反应电解铜的方法和装置

    公开(公告)号:US20050023151A1

    公开(公告)日:2005-02-03

    申请号:US10629497

    申请日:2003-07-28

    IPC分类号: C25C1/12

    CPC分类号: C25C1/12

    摘要: The present invention relates, generally, to a method and apparatus for electrowinning metals, and more particularly to a method and apparatus for copper electrowinning using the ferrous/ferric anode reaction. In general, the use of a flow-through anode—coupled with an effective electrolyte circulation system—enables the efficient and cost-effective operation of a copper electrowinning system employing the ferrous/ferric anode reaction at a total cell voltage of less than about 1.5 V and at current densities of greater than about 26 Amps per square foot (about 280 A/m2), and reduces acid mist generation. Furthermore, the use of such a system permits the use of low ferrous iron concentrations and optimized electrolyte flow rates as compared to prior art systems while producing high quality, commercially saleable product (i.e., LME Grade A copper cathode or equivalent), which is advantageous.

    摘要翻译: 本发明一般涉及用于电解金属的方法和装置,更具体地涉及使用亚铁/三价铁阳极反应的铜电解提取方法和装置。 通常,使用与有效电解质循环系统耦合的流通阳极使得能够以小于约1.5的总电池电压对采用亚铁/三价铁阳极反应的铜电解冶金系统进行有效和经济有效的操作 V,电流密度大于约26安培/平方英尺(约280A / m 2),并减少酸雾产生。 此外,与现有技术的系统相比,使用这种系统允许使用低亚铁浓度和优化的电解质流速,同时生产高品质的商业可售产品(即LME A级铜阴极或等效物),这是有利的 。