中国有色金属学报
ZHONGGUO YOUSEJINSHU XUEBAO
| 第16卷 第11期 总第92期 2006年11月 |
(中南大学 资源与安全工程学院, 长沙 410083)
摘 要: 针对电场作用对堆浸过程中氧气气体在浸堆中传输的影响， 在实验室采用三轴渗流实验装置和电场实施装置， 研究外加电场作用下浸堆中氧气气体的渗流性质。 结果表明： 电场作用对浸堆中氧气渗流性质的影响非常明显； 电场作用下， 氧气气体渗流速度比无电场时要大， 并且渗流速度随氧气气体压力梯度增大成线性增加； 加电场后， 浸堆中氧气气体渗流量随电压(电场强度)升高成线性增大； 渗透率越好的浸堆， 氧气气体在浸堆中的电动效应越明显。
关键字: 堆置浸出; 浸堆; 氧气; 渗流性质; 电场作用
（School of Resources and Safety Engineering, Central South University,
Changsha 410083, China）
Abstract: The electric field has effective influence on the transmission of oxygen gas in dump when heap leaching. The seepage properties of oxygen in dump under the effect of electric field are investigated by triaxial compression and seepage test. The testing results indicate that the influence of electric field on oxygen seepage properties in dump is obvious. The seepage velocity of oxygen under electric field is much larger than that with no electric field, and increases linearly with the pressure gradient of oxygen gas. Under electric field, the quantity of oxygen gas seepage in dump increases approximately linearly with voltage or electric field strength. The better the permeability of dump is, the clearer the electric effect of oxygen gas in dump is.
Key words: heap leaching; dump; oxygen; seepage property; electric field effect
