Leaching of manganese deep ocean nodules in FeSO₄芒芒芒H₂SO₄芒芒芒H₂O solutions

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• 作者：Vu ; H. ; Jandov脙脙 ; J. ; Lis脙脙 ; K. ; Vranka ; F.
• 关键词：Manganese deep ocean nodules ; Leaching in FeSO₄芒芒芒H₂SO₄芒芒芒H₂O ; Influence of variable parameters on Co ; Ni ; Cu and Mn extraction
• 刊名：Hydrometallurgy
• 出版年：2005
• 期刊代码：38_0304386x
• 类别：ce
• 出版时间：April, 2005
• 卷：77
• 期：1-2
• 页码：147-153
• 文件大小：142 K

摘要

Studies have been carried out to determine maximum extraction efficiency of Co, Ni, Cu and Mn from manganese deep ocean nodules in FeSO₄芒芒芒H₂SO₄芒芒芒H₂O solutions and to maximise Co, Ni, Cu and Mn concentrations in the resulting leach liquors. The leaching parameters such as sulphuric acid concentration, liquid-to-solid ratio, temperature, time and grain size of nodules were varied to study their effect on metal extraction. The optimum conditions established were as follows: stoichiometric amount of FeSO₄, 1.6-fold excess over stoichiometric amount of H₂SO₄, 90 芒芒C, l/s of 7:1, grain size 芒芒芒1000 芒芒m. Under these conditions, more than 85%of Co and 90%of Ni, Cu and Mn could be extracted within 30 min. The leach liquors contained approximately 146 mg Co/L, 1.63 g Ni/L, 1.69 g Cu/L and 30 g Mn/L.