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Associated Sulfide Minerals in Thiosulfate Leaching …


conventional thiosulfate-copper-ammonia leaching. The consumption of thiosulfate, however, was largely reduced. ... various sulfide minerals, such as pyrite, pyrrhotite, chalcocite, galena and chalcopyrite. The leaching of gold in the presence of iron sulfides was also improved by


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US4165264A - Ammonia leaching - Google Patents


An improved process for obtaining copper from a copper sulfide, in which: the copper sulfide is treated with oxygen and an aqueous leaching solution of ammonium carbonate, to form a leach liquor which contains ammonia complexes of copper sulfate and copper carbonate; the leach liquor is heated to form gaseous ammonia and …


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Copper extraction - Wikipedia


Some supergene sulfide deposits can be leached using a bacterial oxidation heap leach process to oxidize the sulfides to sulfuric acid, which also allows for simultaneous leaching with sulfuric acid to produce a copper sulfate solution.


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selective leaching of gold from copper rich ores ...


In heap leaching of secondary copper sulfide ores operated at low heap ... extraction of copper and gold (if present) from copper flotation concentrate. .... of rare earth metals from fluoroapatite rich phosphate concentrates involves a weak acid leach .


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Pressure Leaching of Copper Concentrates


Pressure Leaching of Copper Concentrates John O. Marsden Senior Vice President ... Ammonia. 10 October 25th, 2004 Factors Affecting Process Selection ... Converts a significant portion of sulfide sulfur to elemental


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can nitric acid extract gold from sulfide ore


Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore Kalanga Gracias Tshilombo, AF Mulaba-Bafubiandi L International Conference on Mining, Mineral Processing and Metallurgical Engineering (ICMMME'2013) April 15-16, 2013 Johannesburg (South Africa) 120 A sample of this ore has been supplied to us by the,


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The Leaching of Cupric Sulfide in Ammonia - Industrial ...


Learn more about these metrics Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days. The Altmetric Attention Score is a quantitative measure of the attention that …


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Copper extraction - Wikipedia


Copper extraction refers to the methods used to obtaining copper ... The copper sulfate solution (the pregnant leach solution) ... Copper sulfide and iron oxide can ...


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Treatment of Mixed Sulfide Oxide Ores of Copper


metallurgical contentsulfuric acid as a solventtreatment of oxidized copper by agitationsulfur dioxide and ammonia as solventsiron salts as solventsother solvents for oxidized coppercontrol of temperature during sulfationthe precipitantelectrolysissulfur-dioxide precipitationhydrogen sulfide as precipitantprecipitation by heat aloneother ...


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leaching of a roasted copper sulfide ore - Mineral ...


Home / leaching of a roasted copper sulfide ore . leaching of a roasted copper sulfide ore. White Ammonia, White Ammonia Suppliers and Manufacturers at . Ammonium Sulfate/white crystalline ammonia. Add to Compare. Response .. substitute for baking ammonia baking ammonia uk. Add to Compare.


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