by American Institute of Mining, Metallurgical, and Petroleum Engineers in [Littleton? CO] .
Written in English
|Other titles||Au and Ag heap and dump leaching practice., Au & Ag., Heap and dump leaching practice.|
|Statement||editor, J. Brent Hiskey ; sponsored by Solution Minning Committee, Mining and Exploration Division, Society of Mining Engineers of AIME.|
|Contributions||Hiskey, J. Brent., Society of Mining Engineers of AIME. Solution Mining Committee., SME Meeting (1983 : Salt Lake City, Utah)|
|LC Classifications||TN538.G64 A8 1983|
|The Physical Object|
|Pagination||vi, 162 p. :|
|Number of Pages||162|
|LC Control Number||84071234|
The and issues of Heap and Dump Leaching International Newsletter (published quarterly by DHL Company in Lakewood, Colorado) were also reviewed. , oz/yr 70 Au 6 Au 40 Au 70 Ag 1 Au 70 Ag > Ag 70 Au Ag 3 Au 10 Ag 60 Au 30 Ag Au the practice of gold heap leaching continues to increase dra- matically. The low. Precious Metal Heap Leach Design and Practice Daniel W. Kappes1 ABSTRACT Heap leaching of gold and silver ores is conducted at approximately mines worldwide. Heap leaching is one of several alternative process methods for treating precious metal ores, and is selected primarily to take advantage of its low capital cost relative to other g: Au & Ag. Methods similar to heap leaching can be employed: dump leaching and vat leaching (vat leaching is the treatment of sand or crushed ore in bedded vats with rapid solution percolation). Typically, heap leaching is chosen for basic financial reasons – for a given situation, it represents the best, or safest, return on by: chalcopyrite ores, it is increasingly becoming a target for heap bio-leaching research and development programs. Satellite dump leaching operations have been operated in the past, but copper recoveries have been low and leach kinetics very slow, possibly due to an accumulation of reaction products at the mineral g: Au & Ag.
Hiskey, J.B., “Current status of U.S. gold and silver heap leaching operations,” Chapter 1, Au and Ag Heap and Dump Leaching Practice with Panel Discussion, Proceedings from the SME Fall Meeting, October 19–21, , Salt Lake City, pp. 1–7, American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., Littleton Cited by: HISKEY J B. Current status of U.S. gold and silver heap leaching operations [C]// HISKEY J B. Au & Ag Heap and Dump Leaching Practice. Colorado, US: AIME, 1−7. GASPARRINI C. Heap leaching of rich-clay copper ores is becoming ordinary practice at many sites. Valuable empirical knowledge has been accumulated at Chilean plants like El Tesoro, Codelco Norte, Cerro Colorado and Minera Escondida, among others, but it is generallyFile Size: KB. Au and Ag H e ^ and Dump Leaching Practice, Proceedings of SME Fall Meeting, ly a consideration for finely ground ore or very clayey ores. The control of the moisture content of material entering the agglanerating circuit will depend upon visual Cited by: 9.
(Au, Ag,PGMs), eliminate tramp metals aMining is essentially a Comminution process (see table 6-l); dump leaching uses materials that have already been mined and broken UP withexdosives bpflma~ily oxidized minerals (e.g., malachite,azurite, chrysocolla,-cu prite, tenorite) but also sulfideminerals in waste dumps. 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 exampleFile Size: 1MB. Dump leaching is an industrial process to extract precious metals and copper from ores.. Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and silver, the dump is irrigated with a dilute cyanide solution that percolates through the ore to dissolve gold and Co-products: Tailings, Gangue, Slag, Clinker, Chat, Red . A related technology, dump leaching, is based on the same principles as heap leaching, but usually uses uncrushed run-of-mine (ROM) material, usually containing sulfide minerals, or spent residue Missing: Au & Ag.