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恒择性浸出金的能力。
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 CuCl2being 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.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%