| 堆浸散体颗粒结构对溶浸液渗流规律的影响 |
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| 引用本文： | 吴爱祥,王少勇,杨保华. 堆浸散体颗粒结构对溶浸液渗流规律的影响[J]. 矿业研究与开发, 2011, 0(5): 22-26 |
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| 作者姓名： | 吴爱祥 王少勇 杨保华 |
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| 作者单位： | 北京科技大学土木与环境工程学院;北京科技大学金属矿山高效开采与安全教育部重点实验室;湖南涉外经济学院; |
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| 基金项目： | 国家自然科学基金项目(50934002,51074013); 教育部长江学者与创新团队发展计划(IRT0950) |
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| 摘 要： | 分析了高泥浸堆的堆体结构,运用CT扫描技术对溶浸柱浸出前后进行扫描,构建了二值化图像,将堆体孔隙率计算直观地转化为图像的几何运算。并通过试验验证了颗粒与堆体渗透性的关系。结果表明:均匀性差的堆体,其松散颗粒容易在浸出过程中发生迁移,导致溶浸柱下部颗粒结构变致密,浸出后的平均孔隙率降低2.63个百分点,浸出5 h后的渗透系数降低37.5%;提高入堆颗粒结构的均匀性,浸堆渗透系数可增大2～100倍,对高泥氧化矿采取水洗-分级浸出,浸出率可从1%提高到60%。
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| 关 键 词： | 颗粒结构 CT扫描 堆体结构 堆浸 渗透系数 |
Effect of Particle Structure on Permeability of Leaching Dump |
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| WU Aixiang,,WANG Shaoyong,YANG Baohua. Effect of Particle Structure on Permeability of Leaching Dump[J]. Mining Research and Development, 2011, 0(5): 22-26 |
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| Authors: | WU Aixiang WANG Shaoyong YANG Baohua |
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| Affiliation: | WU Aixiang1,2,WANG Shaoyong1,YANG Baohua1,3(1.School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China,2.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,3.Hunan International Economics University,Changsha,Hunan 410205,China) |
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| Abstract: | The heap structure of high-clay oxide ore was analyzed.Leaching column was scanned by CT scan technology in pre-leaching and after leaching.The binary image of heap structure was built,the mathematic calculate of porosity was translated to the geometric calculate of the image,and the relationship of particle uniformity and permeability in heap had been proved by test.The result indicated that,for leaching dump with poor particle uniformity,the loose particles transported easily in the process of heap leachi... |
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| Keywords: | Particle structure CT scan Heap structure Heap leaching Permeability coefficient |
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