| 高碱低渗透性氧化铜矿渗透试验研究 |
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| 引用本文： | 黄明清,吴爱祥,严佳龙,黄海炼.高碱低渗透性氧化铜矿渗透试验研究[J].湿法冶金,2011(3):210-213. |
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| 作者姓名： | 黄明清 吴爱祥 严佳龙 黄海炼 |
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| 作者单位： | 北京科技大学土木与环境工程学院; |
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| 基金项目： | 国家自然科学基金重点项目(50934002);国家自然科学基金项目(50774011); 新世纪优秀人才支持计划(NECT-07-0070) |
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| 摘 要： | 采用混合水平均匀设计方案进行变水头法高碱低渗透性氧化铜矿柱浸试验,探讨了初始浸出酸度、喷淋强度和矿石粒径对矿堆渗透速度的影响,3因素对回归方程的贡献分别为0、15.6%和83.6%。采用电子探针分析、电子显微镜扫描等方法,确定了不同浸出阶段影响矿堆渗透性的主导因素分别为浸出前期为松散颗粒的物理堵塞作用,中期为悬浮液淤塞作用,后期为化学结垢和机械压实作用。渗透动力学分析结果表明,粗颗粒、细颗粒和粉末矿堆的渗透速度均随浸出时间的延长而呈指数级减小,且不同粒径矿堆的渗透速度及下降速率相差很大。
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| 关 键 词： | 均匀设计 变水头法 渗透速度 渗透动力学 |
Permeability of Alkaline Low-permeability Copper Oxide by Column Leaching |
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| HUANG Ming-qing,WU Ai-xiang,YAN Jia-long,HUANG Hai-lian.Permeability of Alkaline Low-permeability Copper Oxide by Column Leaching[J].Hydrometallurgy of China,2011(3):210-213. |
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| Authors: | HUANG Ming-qing WU Ai-xiang YAN Jia-long HUANG Hai-lian |
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| Affiliation: | HUANG Ming-qing,WU Ai-xiang,YAN Jia-long,HUANG Hai-lian (School of Civil and Environment Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | Level-mixed uniform design method was adopted to carry out column leaching of alkaline low-permeability copper oxide ore on basis of variable-water-level method.Initial acid concentration,spray strength and ore particle size were selected as influencing factors.The results showed that these factors' contributions to regression equation were sequentially 0,15.6% and 83.6%.The results of electronic scanning and electron probe indicated that dominant influencing factors were different corresponding to leaching... |
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| Keywords: | uniform design variable-water-level method permeability index permeability dynamics |
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