| 几种有机质对岩石中金的淋滤、萃取及还原作用的实验研究 |
| 点此下载全文 |
| 引用本文：.1993.Laboratory studies on leaching,extraction and reduction of gold by organic matter[J].Mineral Deposits,12(3):245~252 |
| Hits: 2357 |
| Download times: 1704 |
|
| 基金项目:国家自然科学基金(编号49103042)资助项目 |
|
| 中文摘要:用实验方法研究了25～200℃区间内含有机酸、有机酸盐的水溶液及含石油水溶液对岩石中Au的淋滤萃取能力，以及沥青、干酪根对水溶液中Au+3的还原作用。结果说明，大部分含有机质水溶液对Au的淋滤作用超过单纯的无机盐卤水，石油中Au浓度达到水溶液之中金浓度的4000倍，含石油水溶液可把岩石中90％的金淋滤出来。沥青、干酪根对Au3+有强烈地还原能力，其中沥青还原Au3+的活化能E接近一个恒定值(12.4 kcal·mol-1)，与沥青的热演化程度关系不大。 |
| 中文关键词:地球化学 有机质 淋滤作用 还原作用 金矿床 |
| |
| Laboratory studies on leaching,extraction and reduction of gold by organic matter |
|
|
| Abstract:This paper deals with the leaching and extraction of gold by solutions of organic acid and salt and oil-bearing solutions at 25～200℃ as well as the reduction of Au3+ to Au0 by bitumen and kerogen. Most of the solutions containing organic acid and salt have higher capacity of leaching gold than brine without organic components. Gold concentration in crude oil is 4000 times higher than that in water solution. Water solution with crude oiI can extract 90％gold from oxidized gold ore. Bitumen and kerogen have strong capacity of reducing Au3+, and the activation energy(E)of bitumen to reduce Au3+ do not show obvious change after it is heated to 300～350℃and kept at such temperature for 72 hours. |
| View Full Text View/Add Comment Download reader |
