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| 无水有机溶剂-氯化铜体系浸出金的研究 |
| Research on the Leaching of Gold in Anhydrous Organic Solvents-Copper Chloride System |
| 投稿时间：2016-01-19 |
| DOI： |
| 中文关键词: 有色金属冶金 有机溶剂 氯化铜 浸出 金 还原 |
| 英文关键词: nonferrous metallurgy organic solvent CuCl2 leaching gold reduction |
| 基金项目:国家自然基金(51474146)、上海市自然基金(14ZR1416900)、上海第二工业大学校重点学科建设项目(XXKZD1602)。 |
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| 中文摘要: |
| 以单因素实验及正交实验研究了无水CuCl2-N,N-二甲基甲酰胺体系浸出金。在无水CuCl2浓度0.75 mol/L、浸出温度75℃、浸出时间75 min、液固比500:1的优化条件下，金的浸出率可以达到96.6%；浸出液中的金可被蒸馏水还原，得到金单质，常温下加溶液体积80%的蒸馏水，经1.5 h，金的还原率达99.2%。体系对实际物料表现出很好的选择性浸出金的能力。 |
| 英文摘要: |
| The leaching of gold by CuCl2-DMF system was studied by the single-factor and orthogonal experiments. The leaching rate of gold reached 96.6% under the following optimum conditions: The concentration CuCl2 being 0.75 mol/L, the reaction time of 75 min, the ratio of solid to liquid fixed at 500:1. Meanwhile metallic gold could be recovered by adding distilled water into the leachate. 99.2% of gold was reduced at normal temperature when the reaction time was 1.5 h, and the quantity of distilled water added to the leachate was 80% of the leachate volume. When it came o the selective leaching of gold from actual materials, this system worked well. |
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