考察了超声波强化浸出过程中主要影响因素对金浸出率的影响。结果表明，超声强化手段在浸出过程中具有明显的作用。采用超声强化浸出5 h后最高浸出率为80.5%。功率适当时超声波促进了金的浸出，但是过大的超声功率反而降低了金的浸出率。保证足够的氰化钠用量是超声强化浸金的重要条件。超声强化浸出的主要作用机理是超声波破坏了矿料钝化的复盖层，加速了固液介面的流动和交换，从而加速了化学和电化学反应。
The main factors that influence gold leaching rate were invested during the ultrasonic enhancing leaching process. The results showed that ultrasonic method has obvious effect in leaching process. The highest leaching rate is 80.5% after ultrasonic leaching for 5 hours. The appropriate ultrasonic power promoted the gold leaching rate. However, the higher ultrasonic power decreased the gold leaching rate. Enough concentration of NaCN is an important condition of ultrasonic leaching. The ultrasound enhanced leaching mechanism is that ultrasound break passivation coating, accelerate the solid-liquid interface flow and exchange, thus accelerate chemical and electrochemical reaction.
参考文献
| [1] | 郭振杰.提金新工艺--氰化法[J].内蒙古科技与经济,2007(24):75-75,77. |
| [2] | 刘春尧,肖永战.氰化浸金废水零排放工艺的实践及其改进的探讨[J].节能与环保,2005(08):39-41. |
| [3] | Breuer P L;Jeffrey M I .Copper catalyzed oxidation of thiosulfate by oxygen in gold leach solutions[J].Minerals Engineering,2003,16(01):21-30. |
| [4] | 胡春融.黄金选冶技术发展述评[J].黄金,2000(01):29. |
| [5] | F. Habashi .A short history of hydrometallurgy[J].Hydrometallurgy,2005(1/2):15-22. |
| [6] | Louis W Cope.槽浸--一个被忽视的工艺[J].中国矿业,2000(04):12-16. |
| [7] | 付绸琳,钟雄,付高明.仙人岩地表金矿石氰化浸出试验[J].有色金属（冶炼部分）,2013(06):37-39. |
| [8] | 韩春国.东溪金矿树脂矿浆法提金工艺试验研究与生产实践[J].黄金,2013(04):53-55. |
| [9] | 聂树人;索有瑞.难选冶金矿石浸金[M].北京:地质出版社,1997 |
| [10] | 陈东,梁殿印,韩登峰,王志国.超声波对常用浮选药剂分散乳化效果研究[J].有色金属（选矿部分）,2011(03):50-53. |
| [11] | 赵文焕.超声波强化浸出（PUL法）金生产应用可行性研究[J].矿冶,1996(04):51. |
| [12] | 罗曾文;邓文海;羽正之 等.超声强化氰化法浸出黄金的研究[J].声学技术,1996,15(04):198-200. |
| [13] | 沈耀亚,赵德智,许凤军.功率超声在化工领域中的应用现状和发展趋势措施[J].现代化工,2000(10):14-18. |
| [14] | 张斌,陈启元.超声波在湿法冶金中的应用进展[J].湿法冶金,2001(03):113-115. |
| [15] | 艾纯明,王贻明,吴爱祥,杨盛凯.硫化铜矿的超声波强化浸出[J].中国有色冶金,2010(06):68-70,78. |
| [16] | 孙秀兰,马少健,阙绍娟,高莹.广西某金矿石氰化浸出试验研究[J].矿业工程,2010(03):34-35. |
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