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Book Precious Metals Recovery from Low grade Resources

Download or read book Precious Metals Recovery from Low grade Resources written by and published by . This book was released on 1985 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This information circular describes research the Bureau of Mines has conducted to improve technology for recovering precious metals from low-grade resources. Many of the reported findings are recent, and some of te work described is ongoing. Topics discussed include cyanidation of carbonaceous gold ores to enhance gold recovery, a new method for precipitating mercury during cyanide leaching of gold ores, a staged heap leaching process to generate suitable solutions for direct electrowinning of gold, the use of anion-exchange resins to recover gold from cyanide solutions, and precious metals recovery from electronic scrap.

Book Gold and Silver Leaching Practices in the United States

Download or read book Gold and Silver Leaching Practices in the United States written by Peter G. Chamberlain and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Report of Investigations

Download or read book Report of Investigations written by and published by . This book was released on 1982 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Crushing Techniques for Pneumatic Concentration of Mica

Download or read book Crushing Techniques for Pneumatic Concentration of Mica written by Carl W. Smith and published by . This book was released on 1982 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Evaluation of REO Model BT 300 C D Blasting Machine Tester

Download or read book Evaluation of REO Model BT 300 C D Blasting Machine Tester written by John H. Scott and published by . This book was released on 1982 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Information Circular

Download or read book Information Circular written by and published by . This book was released on 1983 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Processing Gold Ores Using Heap Leach carbon Adsorption Methods

Download or read book Processing Gold Ores Using Heap Leach carbon Adsorption Methods written by Harold J. Heinen and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Solution Mining

Download or read book Solution Mining written by Robert Bartlett and published by Routledge. This book was released on 2013-10-28 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1998. This book offers a wealth of information on the rapidly expanding field of solution mining: yhe extraction of materials from the earth by leaching and fluid recovery. This is an introductory text for students and professional engineers that is comprehensive and emphases current practice and theory. Percolation leaching of fragmented ground is covered, as well as true and modified in situ teaching. Solution mining of gold, copper and uranium ores, several slats extracted from evaporates and brines, and sulfur are discussed. Mineral teaching chemistry and kinetics, hydrology (including flow equations for various wellfields and other fluid recovery systems), environmental containment and solution mining simulation models are also included.

Book Solution Mining

Download or read book Solution Mining written by Robert W. Bartlett and published by Psychology Press. This book was released on 1998 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1998. Routledge is an imprint of Taylor & Francis, an informa company.

Book Production of High purity Gold from Zinc Precipitates and Steel Wool Cathodes by Hydrometallurgical Refining

Download or read book Production of High purity Gold from Zinc Precipitates and Steel Wool Cathodes by Hydrometallurgical Refining written by G. E. McClelland and published by . This book was released on 1985 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bureau of Mines investigated chemical methods for producing high- purity gold from precious-metal-bearing zinc precipitates and steel wool cathodes. Precious-metal-bearing zinc precipitates and steel wool cathodes are unrefined products from conventional cyanidation and heap leaching-cyanidation operations. The zinc precipitates contained 14,40 pct Au and 0.35 pct Ag. The precious-metal-bearing steel wool cathodes contained 20.65 pct Au and 4.84 pct Ag. The precipitates and cathodes were treated with dilute acid to solubilize the silver and/or base metals. The gold-bearing residue was leached in dilute aqua reqia to solubilize the gold. High-purity gold was precipitated from the aqua regia solution with oxalic acid, sulfurous acid, sodium bisulfite, and gaseous sulfur dioxide. The leaching-precipitation experiments recovered 99.9 pct of the gold. The gold precipitates ranged in fineness from 997 to 999 fine. The chemical refining method provides a viable technique for the smaller operator to produce high-purity gold without using pyrometallurgical refining methods.

Book Earth Grounding Beds design and Evaluation

Download or read book Earth Grounding Beds design and Evaluation written by and published by . This book was released on 1985 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Laboratory Wear Testing Capabilities of the Bureau of Mines

Download or read book Laboratory Wear Testing Capabilities of the Bureau of Mines written by Robert Blickensderfer and published by . This book was released on 1985 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: