thiosulfate leaching of gold a review

Thiosulfatecopperammonia leaching of pure gold and pressure

Received July 11, 2016 reviewed accepted April 26, 2017. Thiosulfatecopperammonia leaching of pure gold and pressure oxidized concentrate. Antti Porvali*, Lotta Rintala*, Jari Aromaa*, Tommi Kaartinen**, Olof Forsen*,. Mari Lundstrom*. *Department of Materials Science and Engineering, Aalto University, PO Box 

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Associated Sulfide Minerals in Thiosulfate Leaching of Gold QSpace

leaching rate but also increase the consumption of thiosulfate. Comparable gold extractions were observed in the leaching of the composite ores containing 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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Thiosulfatecopperammonia leaching of pure gold and pressure

of Mineral Processing ISSN 16431049 (print). ISSN 20844735 (online). Received July 11, 2016 reviewed accepted April 26, 2017. Thiosulfatecopperammonia leaching of pure gold and pressure oxidized concentrate. Antti Porvali*, Lotta Rintala*, Jari Aromaa*, Tommi Kaartinen**, Olof 

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Sodium Thiosulphate Gold Leaching 911 Metallurgist

Mar 17, 2017 The gold industry has been seeking alternative reagents for leaching gold from lowgrade ores for the past 25 years. The cost and transport of cyanide, the poor recovery of gold from carbonaceous ores, the lack of selectivity of cyanide towards copper minerals and the cost of waste treatment are real factors 

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Thiosulfate leaching of gold—A review ScienceDirect

The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options. The appliion to different ore types and process options have also been discussed. The thiosulfate leaching process it alysed 

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A Review on Alternative Gold Recovery Reagents to Cyanide

The target of this review is to point out the best cyanidefree processes of following methods and reagents: Bioleaching, Chlorination, Aqua Regia, Bromine, Thiocyanate, Thiosulfate and Thiourea leaching. For this propose, the gold leaching reagents are described and discussed in terms of their environmental and 

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Document downloaded from: This paper must be cited as RiuNet

Abstract. The use of electrochemical techniques in the selective recovery of gold from a solution containing thiosulphate, ammonia, and copper, obtained from the leaching of printed circuit boards from mobile phones using ammoniacal thiosulphate, are shown in this work. First, cyclic voltammetry tests were performed to 

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Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for

The use of copper as a alyst for gold leaching in ammonium thiosulfate solution might cause the high consumption of thiosulfate. Also, 0.2mass% of Fe and C, the nickel alyzed ammonium thiosulfate solution could extract 95% of gold with the 1.2kg/tore of ammonium Metallurgy Review 4 (1988) 95–134.

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COMPARISON OF CYANIDE AND THIOSULPHATE LEACHING

LAPPEENRANTA UNIVERSITY OF TECHNOLOGY. Faculty of Technology. Process and Product Development. COMPARISON OF CYANIDE AND THIOSULPHATE LEACHING. FOR GOLD PRODUCTION. (A Literature Review) by. Simo Keskinen. 2013. Bachelor of Science (Technology) Thesis. Examiner: D.Sc. Arto Laari.

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Gold strike with thiosulphate MINING

Jun 19, 2015 Within the tanks, the slurry interacts with thiosulfate and a fine, beadlike material called resin that collects the gold. At full capacity, 13,400 tons of ore can be processed daily, with leaching taking place simultaneously in two sets of seven tanks. The thiosulphate process will enable Barrick to contribute an 

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Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for

The use of copper as a alyst for gold leaching in ammonium thiosulfate solution might cause the high consumption of thiosulfate. Also, 0.2mass% of Fe and C, the nickel alyzed ammonium thiosulfate solution could extract 95% of gold with the 1.2kg/tore of ammonium Metallurgy Review 4 (1988) 95–134.

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Thiosulphate Stability In Gold Leaching Process Bibliothèque et

Ammonium thiosulphate is an alternative gold leaching Laaviant used to replace Other types of gold ores were selected to c o d h n the results. The main compounds of thiosulphate lirciviant are ammonium thio sulphate, amrnonia and cuprïc ion The copper . A Review On The Chemistry Of Thiosuiphate Decornposition .

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Treatment of a Polysulphide Ore by Ammoniacal Thiosulfate

of agitation, whereas ammoniacal thiosulfate leaching achieved an 80.9% of gold recovery in only one hour of agitation. Then, the ammoniacal thiosulfate solutions obtained were submitted to five gold recovery techniques (carbon adsorption, cementation, adsorption on carbon impregnated with metallic copper, ion flotation 

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Thiosulfate leaching of gold A review Request PDF ResearchGate

Feb 20, 2018 Request (PDF) Thiosulfate leaching The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options. The appliion to different ore types and process options have also been 

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COMPARISON OF CYANIDE AND THIOSULPHATE LEACHING

LAPPEENRANTA UNIVERSITY OF TECHNOLOGY. Faculty of Technology. Process and Product Development. COMPARISON OF CYANIDE AND THIOSULPHATE LEACHING. FOR GOLD PRODUCTION. (A Literature Review) by. Simo Keskinen. 2013. Bachelor of Science (Technology) Thesis. Examiner: D.Sc. Arto Laari.

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Sodium Thiosulphate Gold Leaching 911 Metallurgist

Mar 17, 2017 The gold industry has been seeking alternative reagents for leaching gold from lowgrade ores for the past 25 years. The cost and transport of cyanide, the poor recovery of gold from carbonaceous ores, the lack of selectivity of cyanide towards copper minerals and the cost of waste treatment are real factors 

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Thiosulphate Leaching Mining SGS

Thiosulfate leaching provides a less toxic alternative to cyanidation in the recovery of gold from ore. SGS can help ensure regulatory compliance and good gold recovery.

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A Review of Ammoniacal Thiosulfate Leaching of Gold Taylor

This literature review provides an update of ammoniacal thiosulfate as a potential lixiviant of gold, the history of thiosulfate leaching and recent progress on thiosulfate leaching of gold, as well as the production, oxidation, and stabilization of thiosulfate. The leaching results of different types of gold ores including oxide 

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There's a first time for everything Barrick Beyond Borders

Apr 13, 2015 One of the first things visitors to the thiosulfate processing area see is 14 new stainless steel tanks, some as high as 55 feet and 50 feet in diameter. This is the new resininleach circuit, a critical component of the thiosulfate process. Goldbearing ore is pumped here from the autoclaves in the form of a 

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A Review of Thiosulfate Leaching of Gold: Focus on MDPI

Jun 15, 2017 Abstract: Thiosulfate leaching is a promising alternative to cyanidation, and the main hindrances for its wide commercial appliion are the high thiosulfate consumption and the difficult recovery of dissolved gold. In this review, the four solutions to reduce the consumption of thiosulfate, including the control 

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The development of resin sorbents selective for gold UTas ePrints

List of publiions arising from this work. 1. Grosse, A.C., Dicinoski, G.W., Shaw, M.J., Haddad, P.R., "Leaching and recovery of gold using ammoniacal thiosulfate leach liquors (a review)". Hydrometallurgy, 69: p. 121 2003.

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Thiosulfate leaching of gold A review Request PDF ResearchGate

Feb 20, 2018 Request (PDF) Thiosulfate leaching The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options. The appliion to different ore types and process options have also been 

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the increased activity in the development of thiosulfate based

lixiviant to cyanide for gold recovery. This is highlighted by the large number of references in the review by Muir and Aylmore(1) in 2001 and the more recent overview by Aylmore(2). The majority of this past research has focused on the leaching of gold from ores with thiosulfate and fundamental studies of the complex 

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Innovative process for the recovery of gold from mining waste Cnr

Keywords: hydrometallurgical process, mining waste, thiosulphate leaching, Specifically, the study focuses on the hydrometallurgical process for the recovery gold. The innovative treatment chosen is the thiosulfate process, that present several .. Aylmore, M. G., Muir, D. M. Thiosolfate leaching of gold a review, Minerals.

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Thiourea Leaching of Gold Imperial Spiral Imperial College London

Review. Alternatives to Cyanide in the Gold Mining Industry: What Prospects for the Future? Gavin HilsonA and A.J MonhemiusB[*]. A School of City and Regional .. [61] used a mildly refractory gold ore containing pyrite and chalcopyrite to determine the feasibility of thiosulphate as an alternative heap leaching technology.

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Document downloaded from: This paper must be cited as RiuNet

Abstract. The use of electrochemical techniques in the selective recovery of gold from a solution containing thiosulphate, ammonia, and copper, obtained from the leaching of printed circuit boards from mobile phones using ammoniacal thiosulphate, are shown in this work. First, cyclic voltammetry tests were performed to 

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Determination of the potential gold electrowinning from an

Oct 5, 2015 These studies show that the efficiency of thiosulphate as a leaching agent depends on the type of mineral to which gold is associated. The results indied that for some .. Grosse, AC, Dicinoski, GD, Shaw, MJ. (2003) Leaching and recovery of gold using ammoniacal thiosulfate leach liquors (a review).

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Thiosulfate leaching of gold—A review ScienceDirect

The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options. The appliion to different ore types and process options have also been discussed. The thiosulfate leaching process it alysed 

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