Experimental study on preferential solution flow during dump leaching of low-grade ores

被引：0

作者：

Sheng-hua Yin

Ai-xiang Wu

Yong-ding Su

Jie Zhang

机构：

[1] University of Science and Technology Beijing,School of Civil and Environment Engineering

[2] Central South University,School of Resource and Safety Engineering

来源：

Journal of Central South University of Technology | 2007年 / 14卷

关键词：

low-grade ore; preferential solution flow; permeability; surface tension; applied rate;

D O I：

暂无

中图分类号：

学科分类号：

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.

引用

页码：584 / 588

页数：4

共 25 条

[1]

Acar Sevket(2005)Conditions for bioleaching a covellite-bearing ore Hydrometallurgy 77 239-246

[2]

Brierley James A.(2000)Research advance of soil preferential flow and pollutant priority migrate[J] Soil and Environment 9 60-63

[3]

Wan Rong Yu(2006)Formative mechanism of preferential solution flow during dump leaching[J] Journal of Central South University of Technology 13 590-594

[4]

Ni Y.-w.(2006)Rule of oxygen transmission in dump leaching[J] Journal of Central South University of Technology 13 295-299

[5]

Ou Z.-q.(2000)Determination of permeability for porous media using fractal theory[J] Journal of Tsinghua University: Science and Technology 40 94-97

[6]

Wu A.-x.(2003)Fractal description of porous media permeability[J] Advances in Water Science 14 769-773

[7]

Yin S.-h.(2001)Experimental study on relation between temperature and rocky permeability[J] Journal of the University of Petroleum: Edition of Natural Science 25 51-53

[8]

Liu J.-z.(2001)Estimation of depth averaged unsaturated soil hydraulic properties from infiltration experiments Journal of Hydrology 242 26-42

[9]

Wu A.-x.(1996)Estimating Unsaturated Soil Hydraulic Properties from Tension Disc Infiltrometer Data by Numerical Inversion Water Resources Research 32 2683-2696

[10]

Wang H.-j.(undefined)undefined undefined undefined undefined-undefined

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