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The company Jacobi Group offers a full range of carbon products to serve the gold recovery industry. These include granular activated carbon grades, and higher …
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To produce a high-purity gold product, it is important to minimize the interference of metal ions in the purification steps. The current study investigated the selective recovery of gold from thiocyanate PLS approaching selective adsorption of gold by ion exchange resins and then a selective elution of gold from loaded resins.
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Commercially available strongly basic anion exchange resins were obtained in their wet forms and used without treatment. The resins involved in this work, including Dowex G51, Dowex 21K and Amberlite IRA-410, were selected from a group of resins that had been investigated previously (Zhang and Dreisinger, 2002a).These resins are all of …
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Recently, Choi et al. (2020) studied the sequential selective recovery of Au and Cu from a bio-leached cyanide solution containing 366 mg/L Cu and 23 mg/L Au by two ion exchangers i.e., Amberjet™ 4200 (anion exchange resin) and Amberlite IRC-86 (cation exchange resin) at different pH values. Based on their studies, over 98% Au was …
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Recovery of gold, silver and nickel from alkaline cyanide solutions by means of weak-base ion-exchange resins. Journal of Applied Chemistry 1958, 8 (2), 77-86.
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The results indicate good premises for gold recovery by ion-exchange resins, since minimal thiosulfate consumption also ensures low polythionate concentration, which is an important issue in gold ...
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DOI: 10.1016/j.rcradv.2023.200182 Corpus ID: 262205568; Gold recovery from synthetic mine tailings leachate using chelating ion exchange resins with thiosulfate-thiourea lixiviant
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DOI: 10.1016/j.seppur.2023.124481 Corpus ID: 259763092; Gold recovery from pregnant thiosulfate solution by ion exchange resin: Synergistic desorption behaviors and mechanisms
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Elemental sulfur and sulfide deriving from these reactions deposit on gold surface and passivate its dissolution. In addition, polythionates generated from thiosulfate decomposition can recapture aurothiosulfate [Au(S 2 O 3) 2] 3− from ion exchange resins and thus hinder gold recovery by resin adsorption [33,34]. Thus, thiosulfate ...
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Current research about gold recovery by ion exchange resins from pregnant thiosulfate solutions is in its infancy and a large number of further work is needed to make the recovery technique more efficient, …
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Abstract The use of an ion exchange resin in the recovery of copper cyanide complexes from wastewater and the recycling of the cyanide used in cyanidation to the gold cyanidation step is an…
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The Freundlich isotherm model was suitable for modeling fold adsorption, and the gold treated using a fixed-bed column mode was approximately 487 mg Au g −1 of …
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Hydrometallurgical gold recovery processes play a pivotal role in the gold mining industry, contributing to more than 90% of global gold production. Among the array of techniques available, the Merrill–Crowe process, adsorption, ion exchange, and solvent extraction are central in extracting gold from leach solutions. While the Merrill–Crowe …
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This paper describes work aimed at evaluating the effectiveness of commercially available anion exchange resins for the recovery of gold from thiosulfate leach liquors and pulps. Increasing environmental and occupational safety concerns about the use of cyanide in gold processing has increased interest in more acceptable alternative
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Ion-exchange process involving the adsorption of gold from a leach solution using a cation-exchange polymer resin have been utilised for gold recovery from e-waste. 82 The basic process is similar to CIC except …
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The company Jacobi Group offers a full range of carbon products to serve the gold recovery industry. These include granular activated carbon grades, and higher capacity granular activated carbon (Group, 2017). 5.2. Ion-exchange resins (IX) The application of ion-exchange resins is an alternative to separate gold ions.
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GOLD RECOVERY FROM COPPER-RICH ORES EMPLOYING THE PUROLITE S992 GOLD-SELECTIVE ION EXCHANGE RESIN 1 1GOLD RECOVERY FROM COPPER -RICH ORES EMPLOYING THE PUROLITE S9 92 GOLD-SELECTIVE ION EXCHANGE RESIN J. van Deventer*, M. Kotze**, V Yahorava** * Purolite International, South Africa …
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Download Citation | On Sep 1, 2023, Victoria R. Shields and others published Gold recovery from synthetic mine tailings leachate using chelating ion exchange resins with thiosulfate-thiourea ...
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This paper will specifically investigate the recovery of gold using ion-exchange resins in a thiosulfate-thiourea lixiviant solution. A range of resins of different functionalities: Purolite® A200 (Type II quaternary ammonium), Lewatit® MonoPlus TP 214 and Puromet® MTS9140 (thiourea), Dowex™ M-4195 (bis-picolylamine) and Lewatit® …
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In this paper one strong acidic, one strong basic and one weak basic ion-exchange resins, considered as exhausted in an industrial demineralizing plant, are screened for gold recovery from cyanide solutions. Based on the observed ability for the recovery and on the ease of regeneration, the weak base anion exchanger Purolite A …
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What is resin for gold recovery? There are different types of resins used for gold recovery, but they generally fall under the category of ion-exchange resins. …
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Finally, a mechanism model of gold recovery was constructed. The research result will provide theoretical basis for gold recovery from pregnant thiosulfate solution by ion exchange resin. 2. Experimental work2.1. Material and reagents. The commercial Amberlite IRA-400 strong-base anion exchange resin was used in this …
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Table 9.10 Some properties of ion exchange resins for recovery and removal of silver from aqueous industrial solutions ... Rogachev I, Meinhardt E, Kautzmann R, Cortina JL, …
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Depending on the gold pregnant solution, gold exists predominantly in two different oxidation states (anion forms) of [Au] − and [Au] 3− and the resins used in gold recovery are all weak, medium and strong base anion exchange resins [28, 32, 35].
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These solutions are then subjected to separation and purification procedures such as cementation, reduction, adsorption, coagulation, solvent extraction, ion exchange resin, gravity separation, ionic flotation, emulsion liquid membrane electro-winning and coal-gold agglomeration (CGA). A list of gold recovery agents is presented in Table 2.
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Therefore this work has intended to investigate the ion exchange recovery of gold from iodide solutions in order to develop a method that may be incorporated with the in situ leaching process. 2. Experimental. The chloride form of Purolite A500/2788, a strong base anion exchange resin, was used throughout this work.
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The principal technological scheme of desorption of gold and accompanying metal-impurities from the AM-2B resin phase used for the sorption processing of gold-bearing ores is considered.
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More recently, Anglo Asian Mining plc selected MINIX ion-exchange resin for gold recovery at its Gedabek gold-copper project in Azerbaijan, which is situated approximately 300 km northwest of the country's capital of Baku. Gedabek, which is the first operating gold mine in Azerbaijan, was officially opened and produced its first gold in May 2009.
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The reason for that could be the quick way the gold undergoes the ion exchange process, so even in lower volume ratios its concentration in the resin is too high to determine the isotherm. ... Nikoloski, A.N.; Ang, K.L. Review of the application of ion exchange resins for the recovery of platinum-group metals from hydrochloric acid …
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The sorption capacity of the sorbents of gold(I) ion from the gold(I)–cyanide complex solution were examined by the pH edge and isotherm experiments. The maximum uptakes of gold by ion exchange resin (Amberjet™ 4400), activated carbon, and PEIB were 427.77, 170.64 and 361.76 mg g −1, respectively. To recover gold as a metallic …
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