Copper Gold Selective leaching Glycine The presence of copper minerals with gold is known to lead to many challenges during the cyanidation of gold ores, such as high consumption of cyanide with low gold extraction and undesirable impacts on gold recovery during the downstream processes.
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Request PDF | Novel resins for the selective extraction of gold from copper rich ores | The recovery of gold from copper rich ores proves problematic when conventional cyanidation and commercially ...
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Gold Recovery from Copper-Rich Ores Employing the Purolite S992 Gold-Selective Ion Exchange Resin This paper discusses the use of a commercially available ion exchange resin with an exceptionally high selectivity for gold over copper. Presented at the Alta 2012 Gold Conference, 31 May to 1 June 2012, Perth, Australia
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ammoniacal cyanide [11,12], leaching of copper prior to cyanidation [2,6,8], cyanide recovery from effluents (e.g. SART process) [5], preaeration prior to cyanidation [6,13,14], and addition of lead nitrate [14,15] have been tested for the treatment of copper-rich gold ores. Table 1 Solubility of copper minerals in 0.1% NaCN solution [1,2]
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The recovery of gold from copper rich ores proves problematic when conventional cyanidation and commercially available standard or gold selective resins are employed. The use of ammonia/cyanide as the lixiviant enhances gold leaching and much improved gold recoveries are possible when a specially designed resin is employed. By considering the geometry of the metal cyanide/ammonia complexes ...
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Drok and Ritchie (1997) carried out an investigation of the selective leaching of gold over copper using ammoniacal cyanide. All tests were carried out at a cyanide concentration of 32 mM, which is well into the oxygen-diffusion-controlled region for the leaching of both copper and gold.
Get PriceRequest PDF | Novel resins for the selective extraction of gold from copper rich ores | The recovery of gold from copper rich ores proves problematic when conventional cyanidation and commercially ...
Get Priceammoniacal cyanide [11,12], leaching of copper prior to cyanidation [2,6,8], cyanide recovery from effluents (e.g. SART process) [5], preaeration prior to cyanidation [6,13,14], and addition of lead nitrate [14,15] have been tested for the treatment of copper-rich gold ores. Table 1 Solubility of copper minerals in 0.1% NaCN solution [1,2]
Get PriceThe recovery of gold from copper rich ores proves problematic when conventional cyanidation and commercially available standard or gold selective resins are employed. The use of ammonia/cyanide as the lixiviant enhances gold leaching and much improved gold recoveries are possible when a specially designed resin is employed. By considering the geometry of the metal cyanide/ammonia complexes ...
Get PriceDrok and Ritchie (1997) carried out an investigation of the selective leaching of gold over copper using ammoniacal cyanide. All tests were carried out at a cyanide concentration of 32 mM, which is well into the oxygen-diffusion-controlled region for the leaching of both copper and gold.
Get PriceThe goal of the present work was to develop hydrometallurgical method based on acid leaching, which makes it possible to perform selective extraction of non-ferrous metals from old flotation tailings. Leaching was performed with sulfuric acid solutions (from 0.5 to 10%) and distilled water. Leaching was carried out using percolators and bottle agitator.
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Copper minerals, even though minor components of precious metal ores, dissolve in these cyanide leaching solutions, consume cyanide, cause fouling of mill solutions, and thus interfere with the precipitation and recovery of gold.2,3,4 Here is a summary of laboratory investigations on the use of cyanide solutions as extractants for copper from various copper-bearing ore fractions.
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Leaching for Copper-Gold Ores Farhang Hedjazi and A. John Monhemius* Anglo Asian Mining plc, Baku, Azerbaijan ABSTRACT A description of the agitation leach plant used for treating gold-copper ores at Anglo Asian Mining’s Gedabek mine in Azerbaijan is given. The plant employs a unique resin-in-pulp system for gold recovery.
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reagent cost, speeds the leaching reaction and provides the opportunity to produce copper as well as gold. Project Target 3 – Copper/gold ores. Ores with significant grades of both copper and gold are difficult to treat by conventional leach processes. Shifting …
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the Refugio mine relative to other gold and copper mines in the region. The Maricunga mine produces 45,000 - 52,000 t/day of gold bearing ores from . the Verde Open pit, with ore gold grades ranging from 0.6 - 1.0 g/t and copper levels of 0.05% - 0.1%. The operations flowsheet is schematically given in Figure 2. Blasted ore is trucked from the
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Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed. The results show that flotation procedures are much easier for gold tellurides compared to other ...
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Heap leaching technology is finding increasingly widespread application to recover values from low-grade ores, especially in the gold and copper industry. The particular attractiveness of the process is the relatively low-cost recovery of the target metal at site without the need for energy intensive comminution, providing the process can be combined with a selective solution recovery ...
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GOLD RECOVERY FROM COPPER-RICH ORES EMPLOYING THE PUROLITE S992 GOLD-SELECTIVE ION EXCHANGE RESIN by J. van Deventer et al.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
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Mixtures of ammonia and cyanide at low concentrations leach gold selectively from copper-gold ores. The effects of various reagent compositions on three different ore types containing between 0.3 – 1.5 per cent Cu are reported. It is shown that the results and optimum compositions vary according to the ore, which is attributed in part to...
Get PriceLeaching for Copper-Gold Ores Farhang Hedjazi and A. John Monhemius* Anglo Asian Mining plc, Baku, Azerbaijan ABSTRACT A description of the agitation leach plant used for treating gold-copper ores at Anglo Asian Mining’s Gedabek mine in Azerbaijan is given. The plant employs a unique resin-in-pulp system for gold recovery.
Get PriceTreatment of A Copper-Rich Gold Ore by Cyanide Leaching, Ammonia Pretreatment and Ammoniacal Cyanide Leaching
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HEAP LEACHING OF COPPER ORES Carlos Avenda o V. Sociedad Terral S.A. ... GOLD RECOVERY FROM COPPER RICH ORES . 1GOLD RECOVERY FROM COPPER RICH ORES EMPLOYING THE PUROLITE S992 GOLD SELECTIVE ION EXCHANGE RESIN In the SART process, the cyanide associated with copper is .
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leaching gold and copper ores the plattner and. leaching of gold copper ores with ammoniacal cyanide solutions. Eliminating Copper from Gold Ore. Copper minerals, even though minor components of precious metal ores, dissolve in these cyanide leaching solutions, consume cyanide, cause fouling of mill solutions, and thus interfere with the precipitation and recovery of gold.2,3,4 Here is a ...
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The invention discloses a method for extracting gold from copper-oxide oxidized gold ores. The method comprises the following steps: 1, carrying out ammonia-cyanide leaching on the copper-oxide oxidized gold ores to obtain an ore pulp; 2, adding hypochlorite into the ore pulp, and stirring to remove copper in order to obtain a copper removed ore pulp; 3, carrying out countercurrent washing on ...
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12-11-2015· HEAP LEACHING OF GOLD & SILVER ORES Heap leaching is the process to extract precious metals like gold, silver, copper etc, from their ore by …
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Leaching is more costly than furnacing and is not effective on ores of irregular composition.… copper processing: Leaching …is generally known), leaching, or hydrometallurgy, is carried out at lower temperatures and thus eliminates the generation of sulfur dioxide; there are, however, effluents and residues that must be treated in order to protect the environment.
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