SO<sub>2</sub>-空气法从钴溶液中除铁、锰的试验研究

SO2-空气法从钴溶液中除铁、锰的试验研究
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作者单位:北京矿冶研究总院,北京矿冶研究总院,北京矿冶研究总院,北京矿冶研究总院,北京矿冶研究总院,北京矿冶研究总院,北京矿冶研究总院
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Test Study on oxidative precipitation of Fe(II),Mn(II) from cobalt leach solutions using SO[sub_s]2[sub_e]-air mixture

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Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy

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摘要:

采用SO₂-空气氧化沉淀法对从刚果某铜钴矿浸出液中除铁、锰的工艺进行了试验研究,探讨了过程中各条件因素对氧化沉淀的影响规律。结果表明,在温度30℃,pH3.5,混合气中SO₂浓度1.5%的最佳工艺条件下,1h内铁即氧化沉淀完全,而锰的氧化沉淀速率则相对较慢,6h才达61.7%。除铁后液用碳酸钠沉淀可获得含Co>42%的粗制碳酸钴产品,可直接出售或进一步提纯钴。

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A new process of oxidative precipitation of Fe(II), Mn(II) from cobalt leach solutions using SO2-air mixture was proposed and effects of various parameters were investigated. Results showed that under optimum conditions as: oxidation temperature of 30℃, PH of 3.5, SO2/air ratio of 2%, iron can be totally oxidized and precipitated from cobalt solution within 1h, while the rate of manganese oxidation is relatively slow, demananization rate is only 61.7% after 6h of oxidation. Coarse product of cobalt carbonate with Co>42% can be obtained from deferrized solution with sodium carbonate as neutralization agent. Product can be sold or used as raw material for further purification.

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徐晓辉,孙留根,王云,李云,刘大学,余群波,韦其晋.SO₂-空气法从钴溶液中除铁、锰的试验研究[J].矿冶,2013,22(3):75-78.

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收稿日期:2013-07-03
最后修改日期:2013-07-26
录用日期:2013-07-04
在线发布日期:2013-08-23
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