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| 超声波强化氰化法浸金的研究 |
| Ultrasonic Enhancing Cyanidation Method for Leaching of Gold |
| 投稿时间：2014-07-14 |
| DOI： |
| 中文关键词: 有色金属冶金 超声 强化 氰化 浸出 金 |
| 英文关键词: nonferrous metallurgy ultrasonic enhancing cyanidation leaching gold |
| 基金项目: |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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