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Experimental study on preferential solution flow during dump leaching of low-grade ores 被引量:3

Experimental study on preferential solution flow during dump leaching of low-grade ores
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摘要 The phenomenon of preferential solution flow during dump leaching of low-grade ores was studied.The formative mechanism of preferential solution flow was investigated through analyzing the relationship between permeability and ore diameter,and the relationship between surface tension and ore diameter.The preferential solution flow happened within the fine ore area when the dump was unsaturated.And it could happen within the coarse ore area when the dump became saturated.The results of experiment show that the outflow of coarse ore area increases sharply with higher applied rate.The outflow of fine ore area is greater than that of coarse ore area when the applied rate is below 3.2 L/min,and the preferential solution flow happens in fine ore area.But the preferential solution flow happens in coarse ore area when the applied rate is higher than 3.2 L/min.The result of the experiment is consistent with the mechanism analyzing. The phenomenon of preferential solution flow during dump leaching of low-grade ores was studied. The formative mechanism of preferential solution flow was investigated through analyzing the relationship between permeability and ore diameter, and the relationship between surface tension and ore diameter. The preferential solution flow happened within the fine ore area when the dump was unsaturated. And it could happen within the coarse ore area when the dump became saturated. The results of experiment show that the outflow of coarse ore area increases sharply with higher applied rate. The outflow of fine ore area is greater than that of coarse ore area when the applied rate is below 3.2 L/min, and the preferential solution flow happens in fine ore area. But the preferential solution flow happens in coarse ore area when the applied rate is higher than 3.2 L/min. The result of the experiment is consistent with the mechanism analyzing.
出处 《Journal of Central South University of Technology》 EI 2007年第4期584-588,共5页 中南工业大学学报(英文版)
基金 Project(50325415)supported by the National Science Fund for Distinguished Young Scholars Project (50621603) supported by China Science Fund for Distinguished Group Project (2004CB619200) supported by National Key Fundamental Research and Development Program of China Project (50574099) supported by National Natural Science Foundation of China
关键词 low-grade ore preferential solution flow PERMEABILITY surface tension applied rate 低等级矿石 渗透性 表面张力 排土场
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参考文献13

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