dump leaching flow хуудас
How copper dump leaching works - ScienceDirect
2021年9月1日 Keywords. 1. Introduction. A widely used method for exploiting secondary sulphide copper deposits involve leaching the ore in heaps or dumps. In both instances,
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How copper dump leaching works - ScienceDirect
2021年9月1日 Abstract. In copper dump leaching, run-of-mine ore is irrigated with acidic leaching solution to generate aqueous cupric ions for further processing. The very large
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Study on preferential flow in dump leaching of low-grade ores
2007年7月1日 Among other factors, such as low-grade ores, complex mineralogy, low bacteria concentration and poor permeability, preferential flow is the principal factor of
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我国铜矿微生物浸出技术的研究进展 - USTB
2018年1月19日 More Information. 摘要. 摘要: 回顾了我国微生物浸出技术发展的历史进程, 总结了我国开展生物浸铜技术的探索与应用进程, 介绍了紫金山铜矿、德兴铜矿两个典型
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Formative mechanism of preferential solution flow
2017年8月28日 The leaching rate of the dump decreases because of large leac- hing blind area El°l. .~ 3 ~2 1 0o'.2 1.0 1.8 2.6 3.4 Ore diameter/cm Fig. 2 Schematic of relationship
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Heat transfer law in leaching dump - Springer
2017年8月26日 flow or even in the turbulent flow, so as to accelerate the heat flow diffusing and keep the leaching dump tempera- ture suitable for bacteria living. Key words:
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Heat transfer law in leaching dump SpringerLink
2005年12月1日 Based on the law of temperature changes in the leaching dump and the forming process of heat flux, the basic balance equation of heat flow in dump was
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尹升华 - 北京科技大学 - 土木与资源工程学院 - X-MOL科学 ...
Study on preferential flow in dump leaching of low-grade ores. Hydrometallurgy, 2007, 87(3-4): 121-132. [7] Wu Aixiang, Yin Shenghua, Qin Wenqing, Liu Jishan, Qiu Guanzhou.
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Rule of oxygen transmission in dump leaching - Springer
2017年8月28日 The results show that lack of oxygen in dump leaching is the critical factor of restricting leaching reaction. Pyrite is the primary oxygen-consuming mineral in
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dump leaching flow хуудас
The flow dia- gram in Figure 1 depicts dump leaching and hydrometallurgical processing of copper. This section presents an overview of the copper mining industry in the United
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How copper dump leaching works - ScienceDirect
2021年9月1日 Keywords. 1. Introduction. A widely used method for exploiting secondary sulphide copper deposits involve leaching the ore in heaps or dumps. In both instances, ore piles are irrigated with acidic solutions that, as they percolate, promote bacterially-assisted oxidative leaching reactions that release copper ions.
More
Study on preferential flow in dump leaching of low-grade ores
2007年7月1日 Among other factors, such as low-grade ores, complex mineralogy, low bacteria concentration and poor permeability, preferential flow is the principal factor of influencing the recovery of copper metal from the low-grade ores in Dexing Copper Mine. As shown in Fig. 1, material used for leaching is the copper-containing rock stripped directly ...
More
我国铜矿微生物浸出技术的研究进展 - USTB
2018年1月19日 More Information. 摘要. 摘要: 回顾了我国微生物浸出技术发展的历史进程, 总结了我国开展生物浸铜技术的探索与应用进程, 介绍了紫金山铜矿、德兴铜矿两个典型的生物浸铜案例; 探讨了浸矿细菌分离、鉴定与富集, 生物浸出机理与界面反应, 浸出体系多级渗流
MoreMetal Extraction - an overview ScienceDirect Topics
Commercial extraction of metals from minerals is usually practiced by dump leaching, heap leaching, tank leaching, or pressurized leaching. ... The depth of the dispersion band Z B varies with the total flow per unit area. Whilst this work was primarily aimed at a design for copper-extraction processes, it is clear that there is scope for ...
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Nonvertical solution flow and its applications in heap and dump leaching
Lateral migration of leach solution in heaps and dumps is attributed to two phenomena. One is site-specific anisotropic conditions that exist on a macroscopic scale on the surface or within the rock piles. The second is associated with a random walk phenomenon that causes dispersion of solution, especially at gradients in flow or hydrostatic pressure. The latter
MoreRelationship between Particle Size Distribution and
2017年10月24日 Fluid flow is a critical process involved in the extraction of valuable metals from low grade ore in heap and dump leaching as well as the release of potentially harmful substances from waste rock piles (Lee et al., 2012; Wu et al., 2007). The movement of fluids through the packed
More
Heat transfer law in leaching dump - Springer
2017年8月26日 flow or even in the turbulent flow, so as to accelerate the heat flow diffusing and keep the leaching dump tempera- ture suitable for bacteria living. Key words: leaching dump; bacteria leaching ore; heat transfer; forced convection; transition flow CLC number: TD853.37 Document code: A 1 INTRODUCTION The method of microorganism leaching
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Experimental study on preferential solution flow during
2017年8月25日 The preferential solution flow in the dump is that most of the solution flows through coarse ore area or fine ore area quickly. It can speed up the percolation flow rate of solution. The leaching area of the dump is shrunk, and the circulation of the solution becomes shorter. Preferential solution flow also makes the solution flow
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Dump Leaching - 911 Metallurgist
2019年8月3日 The dump leaching of low-grade copper ores, as an integral part of the open-pit mining operations in the Southwest, has been practiced for the last fifty years and is increasing in importance as one of the major sources of copper. ... the average increase in copper in the solutions amounted to 0.028 and 0.042 grams per liter at percolation flow ...
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A model of the dump leaching process that incorporates
2022年8月3日 A leaching system cannot be considered in a steady state, because all factors involved in the leaching process change progressively as a function of time. In this paper we have developed a one-dimensional model of the nonsteady-state dump leaching system. We have applied this model to a small test dump con-
MoreHow copper dump leaching works - ScienceDirect
2021年9月1日 Keywords. 1. Introduction. A widely used method for exploiting secondary sulphide copper deposits involve leaching the ore in heaps or dumps. In both instances, ore piles are irrigated with acidic solutions that, as they percolate, promote bacterially-assisted oxidative leaching reactions that release copper ions.
MoreStudy on preferential flow in dump leaching of low-grade ores
2007年7月1日 Among other factors, such as low-grade ores, complex mineralogy, low bacteria concentration and poor permeability, preferential flow is the principal factor of influencing the recovery of copper metal from the low-grade ores in Dexing Copper Mine. As shown in Fig. 1, material used for leaching is the copper-containing rock stripped directly ...
MoreNonvertical solution flow and its applications in heap and dump leaching
Lateral migration of leach solution in heaps and dumps is attributed to two phenomena. One is site-specific anisotropic conditions that exist on a macroscopic scale on the surface or within the rock piles. The second is associated with a random walk phenomenon that causes dispersion of solution, especially at gradients in flow or hydrostatic pressure. The latter
MoreHeat transfer law in leaching dump - Springer
2017年8月26日 flow or even in the turbulent flow, so as to accelerate the heat flow diffusing and keep the leaching dump tempera- ture suitable for bacteria living. Key words: leaching dump; bacteria leaching ore; heat transfer; forced convection; transition flow CLC number: TD853.37 Document code: A 1 INTRODUCTION The method of microorganism leaching
MoreExperimental study on preferential solution flow during
2017年8月25日 The preferential solution flow in the dump is that most of the solution flows through coarse ore area or fine ore area quickly. It can speed up the percolation flow rate of solution. The leaching area of the dump is shrunk, and the circulation of the solution becomes shorter. Preferential solution flow also makes the solution flow
MoreRelationship between Particle Size Distribution and
2017年10月24日 Fluid flow is a critical process involved in the extraction of valuable metals from low grade ore in heap and dump leaching as well as the release of potentially harmful substances from waste rock piles (Lee et al., 2012; Wu et al., 2007). The movement of fluids through the packed
More
第8章 硫化铜矿的细菌浸出.ppt - 原创力文档
2018年3月10日 第8章 硫化铜矿的细菌浸出.ppt,堆浸视原料的不同又区分为原矿堆浸(Heap leaching)与废石堆浸(Dump leaching)。 Heap leaching处理的是品位较低的硫化铜矿，由于品位较低，常规的磨矿一选矿一冶炼技术路子在经济上不可行，将全部矿石破碎到一定程度后在准备好的底垫上筑成堆进行浸出。
MoreA model of the dump leaching process that incorporates
2022年8月3日 A leaching system cannot be considered in a steady state, because all factors involved in the leaching process change progressively as a function of time. In this paper we have developed a one-dimensional model of the nonsteady-state dump leaching system. We have applied this model to a small test dump con-
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湿法炼铜_生物菌浸出法_的近况及展望.pdf - 原创力文档
2018年1月26日 湿法炼铜_生物菌浸出法_的近况及展望. 第 32 卷第 3 期 当 代 化 工 Vol. 32 ,No. 3 2003 年 9 月 Contemporary Chemical Industry September ,2003 ( ) 湿法炼铜 生物菌浸出法 的近况及展望 裴世红 , 张 翔 , 王红心 , 王邦贺 , 谭学富 (沈阳化工学院 , 辽宁 沈阳 110021) 摘 要 : 指出生物菌 ...
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Dump and Heap Leaching - DocsLib
2018年8月22日 CHAPTER 7.3 . 10.3>>. Dump and Heap Leaching. Randall Pyper, Thom Seal, John L. Uhrie, and Glenn C. Miller. Heap leaching is a hydrometallurgical recovery process where A simplistic heap leach flow sheet is illustrated in broken ore of appropriate characteristics is stacked upon an Figure 1. A unit of ore under irrigation is called a cell.
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