| 硫脲法浸取硫化金矿的工艺改进研究 |
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| 引用本文： | 王清江,程圭芳.硫脲法浸取硫化金矿的工艺改进研究[J].华东师范大学学报(自然科学版),1998(1):61-65. |
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| 作者姓名： | 王清江 程圭芳 |
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| 作者单位： | 华东师范大学化学系!上海，200062，华东师范大学化学系!上海，200062，华东师范大学化学系!上海，200062 |
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| 摘 要： | 本文研究了硫脲法浸取硫化金矿的最佳条件、回收方法和硫脲的循环使用等问题。原矿经磨细，焙烧，用稀酸预浸出铜后，在常温，硫脲浓度１０克／斤，硫酸铁浓度３．３克／升，ｐＨ值为１－２条件下，浸取两小时可以得到接近１００％的浸取率。选用钢屑回收浸取液中的金，回收率大于９６％，且硫脲不受损失。实验发现，硫脲可以多次循环使用，这样可以部分解决硫脲法浸金过程中硫脲消耗量大的问题。
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| 关 键 词： | 炼金 浸取 硫脲 |
Study on the Improvement Process of Leaching Gold from Sulfide Ore with Thiourea |
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| Wang Qingjiang ,Cheng Guifang, Zong Wei.Study on the Improvement Process of Leaching Gold from Sulfide Ore with Thiourea[J].Journal of East China Normal University(Natural Science),1998(1):61-65. |
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| Authors: | Wang Qingjiang Cheng Guifang Zong Wei |
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| Abstract: | In this paper the optimum conditions for leaching gold from sulfide ore with thiourea are studied experimentally. After grinding and roasting of the ore, and pre - leaching of copper,gold can be leached out nearly to 100 % at the following conditions: room temprature, pH1 - 2,thiourea concentration 10g/L, ferric sulfate concentration 3. 3g/L, and electromagnetic stirring for 2 hours. Using iron filings to recover gold from leaching residue, the efficiency of recovery is more than 96%, Since thiourea is not losed, in this process it can be used repeatedly and large consumption of reagent in the thiourea - leaching process is remarkably reduced. |
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| Keywords: | gold leaching thiourea |
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