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Monday, May 4, 2020 | History

2 edition of Agglomeration and heap leaching of finely ground precious-metal-bearing tailings found in the catalog.

Agglomeration and heap leaching of finely ground precious-metal-bearing tailings

Agglomeration and heap leaching of finely ground precious-metal-bearing tailings

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  • 11 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Pittsburgh, Pa .
Written in English

    Subjects:
  • Precious metals -- Metallurgy.,
  • Heap leaching.,
  • Tailings (Metallurgy),
  • Agglomeration.

  • Edition Notes

    Bibliography: p. 11.

    Statementby G.E. McClelland ... [et al.].
    SeriesInformation circular ;, 9034, Information circular (United States. Bureau of Mines) ;, 9034.
    ContributionsMcClelland, G. E.
    Classifications
    LC ClassificationsTN295 .U4 no. 9034, TN759 .U4 no. 9034
    The Physical Object
    Pagination11 p. :
    Number of Pages11
    ID Numbers
    Open LibraryOL2663072M
    LC Control Number85600087

    By agitation leaching at P80 75µm grind size By heap leaching at mm crushed size By heap leaching at 50mm crushed size This report presents the results of replicate heap leaching testwork on a composite sample representing the sulphide zone of the deposit. It . HEAP LEACHING TECHNIQUE in MINING. Caner Zanbak, PhD. Environmental Coordinator, Turkish Miners Association. Environmental Advisor, Turkish Chemical Manufacturers Association Istanbul, Turkey. 6th International Conference ‐ SDIMI. Sustainable Development in the Minerals Industry. 30 June ‐ 3 July Milos Island, Greece. WITHIN.

      Advantages Low capital and operating costs Absence of milling step, may require crushing and agglomeration Simplicity of atmospheric leach processes Can be used to treat low-grade ores, wastes and small deposits Absence of liquid-solid separation step allows counter- current operation Metal tenor may be built up by recycling solution over heaps. Heap leaching from low-grade ores has become a major contributor to the total global production of copper, gold, silver, and uranium cr ip t (Padilla et al., ). Heap leaching also has been considered for zinc (Lizama et al., ; Petersen and Dixon, ) and nickel (Carlsson and Büchel, ; Shakir et us.

    Leach ore embankments retaining tailings needed to provide the high level of security required of other major tailings dams However, the leach ore is placed in thick (16 m) uncompacted lifts to maintain adequate permeability for leaching and is irrigated with a high solution rate 2(10 L/hr/m) Loose structure made static and dynamic. Staged heap leaching – Direct Electrowinning. Mercury precipitation during cyanide leaching of gold ores. Carbonaceous gold ores. Carbon adsorption-Desorption. Heap Leaching. The Caron-in-pulp process. Precious metals recover from electronic scrap and solder used in electronics.


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Agglomeration and heap leaching of finely ground precious-metal-bearing tailings Download PDF EPUB FB2

Bibliography: p. Agglomeration and heap leaching of finely ground precious-metal-bearing tailingsPages: Agglomeration and heap leaching of finely ground precious-metal-bearing tailings by,U.S. Dept. of the Interior, Bureau of Mines edition, in EnglishPages: Agglomeration and heap leaching of finely ground precious-metal-bearing tailings.

Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, (DLC) *f/NES 75TH A^ Information Circular Agglomeration and Heap Leaching of Finely Ground Precious-Metal-Bearing Tailings By G. McClelland, D. L Pool, A. Hunt, and J. Eisele UNITED STATES DEPARTMENT OF THE INTERIOR Donald Paul Hodel, Secretary BUREAU OF MINES Robert C.

Horton, Director ^ \^> MV Library of Congress Cataloging in. Agglomeration and heap leaching of finely ground precious-metal-bearing tailings. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Agglomeration and heap leaching of finely ground precious-metal-bearing tailings.

Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Agglomeration and heap leaching of finely ground precious-metal-bearing tailings. Pgh. [i.e. Pittsburgh], PA: U.S.

Dept. of the Interior, Bureau of Mines. MLA Citation. McClelland, G. and United States. Bureau of Mines. Agglomeration and heap leaching of finely ground precious-metal-bearing tailings [microform] / by G.E. McClelland. Agglomeration and heap leaching of finely ground precious-metal-bearing tailings /.

Agglomeration pretreatment of crushed ores, wastes, and finely ground tailings has been applied for the successful heap leaching of these feeds that display poor percolation characteristics. Acid curing and agglomeration are generally used prior to heap leaching of copper oxide and secondary sulfide ores to improve the copper extraction process.

Agglomeration is used to bind fine particles to coarse ones to increases the permeability of an ore heap while acid curing inhibits the dissolution of some silicates and accelerates copper.

Agglomeration techniques are widely used by industry to form fine particles into larger masses that are easier to handle and process.

One area where agglomeration is potentially useful is in heap leaching operations. Without agglomeration, fine particles travel through the heap, clogging the spaces between the larger particles and resulting in poor leach solution flow.

During the 's the Bureau of Mines investigated a particle agglomeration technique for improving the flow of leaching solution through heaps of clayey or crushed, low-grade gold-silver ores.

This technology has been adopted on a broad scale by the precious- metal-processing industry. Heap leaching is a tried and tested mining technique enabling the processing of different kinds of ores which could not otherwise be exploited under viable economic conditions.

Modern day heap leaching, which has a relatively low level of energy consumption, is for example. Currently, new heap leaching operations are successfully commissioned throughout the world with the goal of treating mine tailings and residue and to establish effective waste management facilities [2,3].In recent years, 50 major heap-leaching, solvent-extraction, electro winning operations have been established throughout the world, and approximately three million tons of copper have been.

The precious-metal-bearing zinc precipitates are refined on site and yield dore bullion. The dore is shipped to another facility for refining. The barren solutions are recycled to the heaps.

Heap leaching was unsuccessful before agglomeration pretreatment was applied to the ore. Treatment of Cyanide Heap Leaches and Tailings 2 Since the 's and early 's, heap leaching has developed into an efficient way to beneficiate a variety of low-grade, oxidized gold ores.

Compared to tank leaching, heap leaching has several advantages, including simplicity of design, lower capital and operating costs, and shorter startup.

AGGLOMERATION-HEAP LEACHING OPERATIONS IN THE PRECIOUS METALS INDUSTRY By G. McClelland,' D. Pool,' and J. Eisele3 ABSTRACT During the s, the Bureau of Mines investigated a particle ag- glomeration technique for improving the flow of leaching solution. Biomining is the biotechnology that uses microorganisms to recover metals, in particular copper and gold, from ores and concentrates.

Having developed from a very simple operational (in terms of both engineering and biology) process, biomining has developed into a multifaceted technology, to the extent that many of the largest industrial stirred tanks and heaps throughout the world are. Breitenbach, Allan J. Heap leach pad design and construction practices in the 21st Century.

Vector Colorado LLC. Kunkel, Jim. Heap leach lixiviant flow: myth versus reality. Presented at: Tailings and Mine Waste ‘ Knight Piésold ().

Morris, L J. Solution Mining. In: 8th Australian Groundwater School, Australian Mineral Foundation (). Technical Developments in Hydrometallurgy. “Lysimeters Allow Quicker Monitoring of Heap Leaching and Tailings Sites,” Mining Engineering, 37 (4) (), pp.

– et al., “Agglomeration and Heap Leaching of Finely Ground Precious Metal-Bearing Tailings,” U.S. Bureau of Mines, IC(), 15 pp. Google Scholar. The gold must be in a fine particulate form (from the grinding circuit). The feed slurry must have an 80% passing size of 75um to achieve suitable gold recovery (refer to cyclone and grinding modules).

If the particles are too large they may not be totally leached during their residence time in the tanks and hence will report to tailings. US Bureau of Mines How can I find U.S. Bureau of Mines publications? Agglomeration and heap leaching of finely ground precious metal bearing tailings Price: $ IC Precious metals recovery from low grade resources Improvements in heap leaching to recover silver and gold from low- grade resources Price: $ic / agglomeration and heap leaching of finely ground precious-metal-bearing tailings, pb, $ 10 ic / principal deposits of strategic and critical mineral in nevada, pb, $ 50 ic / asbestos availability - market economy countries, a minerals availability program, pb, $ 6.17th International Mining Congress and Exhibition of Turkey- IMCET, ©, ISBN Design Considerations of Heap Leaching at Sarcheshmeh Open Pit Copper Mine Nasab Mining Engineering Department.

Shahid Bahonar University, Kerman, Iran.