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首页> 外文会议>EPD congress;TMS annual meeting exhibition >SEPARATION OF NICKEL AND COBALT IN ACIDIC AQUEOUS SOLUTION BY SELECTIVE REDUCTION OF METALS
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SEPARATION OF NICKEL AND COBALT IN ACIDIC AQUEOUS SOLUTION BY SELECTIVE REDUCTION OF METALS

机译：通过选择性还原金属分离酸性水溶液中的镍和钴

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With the aim of producing nickel (Ni) metal directly from acidic aqueous solution containing cobalt (Co) and other impurities, selective reduction of Ni was examined. As a preliminary experiment, sodium hypophosphite monohydrate (NaH_2PO_2·H_2O) was selected as a reductant, and reacted with aqueous solution containing 0.1 mol L~(-1) nickel sulfate (NiSO_4·6H_2O) and 0 ～ 0.05 mol L~(-1) cobalt sulfate (CoSO_4·7H_2O) for 3 hours at 90 °C. As a result, it was revealed that Ni was selectively reduced and separated from Co in the acidic region (pH = 4.8). In this study, differences of reduction behavior between Ni and Co were investigated, and the feasibility of Ni / Co separation by the selective reduction of Ni was discussed.
机译：目的是直接从含有钴（CO）和其他杂质的酸性水溶液的镍（Ni）金属，检查Ni的选择性还原。作为初步实验，选择次磷酸钠单水合物（NaH_2PO_2·H_2O）作为还原剂，并与含0.1mol L〜（-1）硫酸镍（NISO_4·6H_2O）和0〜0.05mol L〜（-1的水溶液反应）硫酸钴（COSO_4·7H_2O）在90℃下3小时。结果，揭示了Ni被选择性地减少并与酸性区域中的CO分离（pH = 4.8）。在这项研究中，研究了Ni和Co之间的还原行为的差异，并讨论了Ni / Co分离通过选择性Ni的可行性。

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