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有色金属(冶炼部分):2012,(9):1-3
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从软锰矿酸浸沉淀渣中回收钴镍
李伯骥,粟海锋,文衍宣
(广西大学化学化工学院,广西大学化学化工学院,广西大学化学化工学院)
Recovery of Nickel and Cobalt from Precipitation of Pyrolusite Leaching Process
Li Bo-ji,Su Hai-feng and Wen Yan-xuan
(College of Chemistry and Chemical Engineering,Guangxi Universtry,Nanning 53004,China,,)
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投稿时间:2012-02-09     修订日期:2012-02-09     录用日期:2012-02-13     网络发布日期:2012-08-20
中文摘要: 以软锰矿酸浸工艺中除杂产生的二甲基二硫代氨基甲酸盐沉淀为原料,在酸性条件下利用硝酸钠氧化浸出钴和镍。考察硝酸钠用量、硫酸浓度、反应温度和时间等因素对钴和镍浸出效果的影响。结果表明,在硝酸钠用量35.0 g/L,硫酸浓度1.84 mol/L,50 ℃浸出3 h的条件下,钴和镍的浸出率分别达到96%和94%。
Abstract:Dimethyldithiocarbamate precipitation, formed by the addition of sodium dimethyldithiocarbamate to purify the neutralized filtrate of pyrolusite reductive leaching process, was used as raw materials to extract nickel and cobalt with sodium nitrate as oxidant in dilute sulfuric acid medium. The effects of dosage of sodium nitrate, concentration of sulfuric acid, leaching temperature, and reaction time on extraction of nickel and cobalt were investigated. The results show that the leaching rate is 96% for cobalt and 94% for nickel, respectively, under the optimal conditions including H2SO4 concentration of 1.84 mol/L, NaNO3 dosage of 35.0 g/L, and 3 h at 50 ℃.
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基金项目:国家自然科学基金资助项目(51164002,21166003);广西科学研究与技术开发项目(桂科攻11107021-1-4,11107021-4-4)
引用文本:
李伯骥,粟海锋,文衍宣.从软锰矿酸浸沉淀渣中回收钴镍[J].有色金属(冶炼部分),2012(9):1-3.
Li Bo-ji,Su Hai-feng,Wen Yan-xuan.Recovery of Nickel and Cobalt from Precipitation of Pyrolusite Leaching Process[J].Nonferrous Metals (Extractive Metallurgy),2012(9):1-3.

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