gold recovery from copper ore

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A Review of the Recovery of Gold and Silver From Copper
2019.2.27 Currently, the SART process has demonstrated to be the best option to treat gold-copper ores using cyanide, due to its capability to recover cyanide and produce a saleable copper product.
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Recovery of gold as by-product from the base-metals industries
2005.1.1 Gold is often associated with chalcopyrite in ore deposits, and efforts are therefore obviously made at the mine to maximize the recovery of both gold and copper,
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A systematic review of sustainable gold extraction from raw
2022.3.1 copper–gold ores: A dithiophosphate collector at an alkaline pH must be used (controlled by lime or soda ash if the pyrite content in the ore is low). Oxide
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A Review of the Cyanidation Treatment of Copper
2020.5.21 The cyanidation of copper flotation tailings containing sulfides for gold recovery is an example of the formation of cyanide
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Gold-copper ores - ScienceDirect
2005.1.1 As expected, the copper in the circuit reduced to a low level, but when sulfide copper–gold ore processing resumed, the copper concentration in the leach
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Technical Paper Gold Recovery from Copper-Rich Ores
2022.6.29 Technical Paper Gold Recovery from Copper-Rich Ores Employing PurogoldTM MTA9920* Gold-Selective Ion Exchange Resin Presented at the Alta 2012
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(PDF) An Overview of Treatment of Copper-gold
2015.9.9 Copper-bearing gold ores have proved difficult to treat in conventional cyanide leaching process owing to prohibitively high consumption of cyanide by readily soluble copper minerals...
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Mechanism of selective gold extraction from multi
2020.3.19 In this paper, the underlying mechanism of the gold recovery from copper containing solutions – including both aqueous and deep eutectic solvents – by EDRR is explored for the first time. ...
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Copper–gold ore processing with ion exchange and SART
2014.10.1 The successful operation of Anglo Asian Mining’s Gedabek process plant, which uses a unique combination of ion exchange for gold extraction and SART
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Thiourea Leaching: An Update on a Sustainable Approach for Gold ...
2022.3.18 Abstract Electronic waste is a dominant global issue with over 50 million tons generated annually. Still, as an amalgamation of precious and rare raw materials, electronic waste is a considerable economic resource with the most valuable components located on the printed circuit boards. Gold is widely used in electronics in numerous
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A Review of the Cyanidation Treatment of Copper
2020.5.21 The cyanidation of copper flotation tailings containing sulfides for gold recovery is an example of the formation of cyanide complexes with copper and silver during the leaching process [11,12].
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Mechanism of selective gold extraction from multi
2020.3.19 In this paper, the underlying mechanism of the gold recovery from copper containing solutions – including both aqueous and deep eutectic solvents – by EDRR is explored for the first time. ...
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Gold-copper ores - ScienceDirect
2005.1.1 As expected, the copper in the circuit reduced to a low level, but when sulfide copper–gold ore processing resumed, the copper concentration in the leach circuit did not attain previous levels even though a higher copper orebody was being mined. The copper recovery plant was operated intermittently for a few months and was eventually
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(PDF) Metals Special Issue: A Review of the Cyanidation
2020.7.5 As a matter of fact, a SART plant can reduce the operational cost and increase the incomes in a gold mine, although the main achievement is to make feasible the treatment of a gold-copper ore deposit.
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Copper–gold ore processing with ion exchange and SART
2014.10.1 The recovery of Au and Ag from a roasted copper-rich pyritic refractory gold ore (78 g/t Au, 6.8 g/t Ag, 1.38 % Cu and 3.09 % Fe was investigated. Cyanide leaching and adsorption tests were performed at different concentrations of cyanide (1.5 g/L and 5 g/L NaCN) and the adsorbent dosages ranged from 2 g/L to 10 g/L.
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Biomining: Metal Recovery from Ores with Microorganisms
2013.1.1 Bioleaching is a conversion of an insoluble valuable metal into a soluble form by means of microorganisms. In biooxidation, on the other hand, gold is predominantly unlocked from refractory ores in large-scale stirred-tank biooxidation arrangements for further processing steps. In addition to copper and gold production, biomining is also
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Refractory gold reserves: Challenges and opportunities for a
2021.3.23 Gold miners are facing a reserves crisis, and what is left in the ground is becoming more and more challenging to process.Refractory gold reserves, which require more sophisticated treatment methods in order to achieve oxide-ore recovery rates, correspond to 24 percent of current gold reserves and 22 percent of gold resources
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Electro-hydrometallurgical chloride process for selective gold recovery ...
2022.2.1 The gold ore sample from metamorphosed Paleoproterozoic deposit of high-sulfidation epithermal type was obtained for leaching tests. Deposits of this kind are characterized by telluride-rich mineralization [63], [64]; however, regardless of the ore type, each deposit is unique and displays a distinctive combination of minerals.The chemical
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Use of polyethylenimine functionalised magnetic nanoparticles for gold ...
2020.8.1 Gold recovery from copper anode slime by means of magnetite nanoparticles was reported when thiourea is used as the lixiviant for leaching (Ranjbar et al., 2014). Some attempts have been made to recover gold and other precious metals from chloride solutions using nanosized magnetite powder (Alorro et al., 2010; Aghaei et al.,
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Copper and gold recovery from CPU sockets by one-step
2019.3.10 For example, copper in a typical personal computer printed circuit board is about 20 wt.% (Huang et al., 2009), 32 times higher than the global average copper ore, approximately 0.62 wt.% (Calvo et al., 2016), and gold contained in a waste mobile phone is up to 1200 g/t (Tan et al., 2017), which is 400 times higher than a typical gold ore (1 ...
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Gold recovery from copper anode slime by means of
2014.3.1 The current work attempts to study the recovery of gold from copper anode slime by means of a novel process utilizing magnetite nanoparticles (MNPs). In this process, MNPs were first synthesized by the co-precipitation method, and the characterization of the product was then carried out using the X-ray diffraction (XRD), transmission electron ...
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A systematic review of sustainable gold extraction from raw
2022.3.1 Roasting of refractory gold ore with a composition of 180 kg NaClO 3 and 180 kg water/ton ore reached a temperature of 470 °C at a microwave power of 400 watts for 30 minutes. Total oxidized sulfur reached 90.6%, while only 10.4 % of the sulfur was released, and chlorine release was 49.5%.
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A Review of the Cyanidation Treatment of Copper-Gold
2020.7.9 The formation of copper and silver cyanide complexes a ects the gold recovery in both the cyanide leaching process as well as the puriﬁcation and reﬁning stages [7]. These e ects mainly interfere with the gold cyanide reaction and the carbon adsorption. Most of the copper minerals react rapidly with cyanide, forming multiple
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Gold recovery at ultra-high purity from electronic waste
2023.1.1 We propose a sustainable Au recovery technology from e-waste with high purity and probe recyclability, which is established on a selective coordination-based colorimetric probe immobilized on the surface of a quartz substrate to form a thin polymeric film (F1). In particular, the N,N'-dimethylacrylamide (DMA), (E)-2-(methyl(4
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Enhanced Gold Recovery from Alkaline Pressure Oxidized
2022.1.10 Pressure oxidation is a widely accepted method to treat refractory gold ores. Gold recovery is generally lower from alkaline than acidic pressure oxidation discharge due to passivation and incomplete oxidation of mineral. Gold ore from Goldstrike, NV, is a typical refractory gold ore containing sulfide and carbonaceous matter. Alkaline pressure
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From Waste to Green Applications: The Use of Recovered Gold
2021.8.28 The direct use in catalysis of precious metal recovery products from industrial and consumer waste is a very promising recent area of investigation. It represents a more sustainable, environmentally benign, and profitable way of managing the low abundance of precious metals, as well as encouraging new ways of exploiting their
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Gold dissolution and copper suppression during leaching of copper–gold ...
2016.3.1 The cyanide–ammonia system to leach gold over copper from oxidized ores has been studied using different gold–copper ores (Drok and Ritchie, 1997, Costello et al., 1992, Muir et al., 1995, La Brooy et al., 1991). However, the treatment of sulfide ores gave poor gold recovery and required higher reagent concentrations (Muir, 2011).
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