pressure chloride leaching of a refractory gold ore

pressure chloride leaching of a refractory gold ore

(PDF) New Chloride Leaching Process for Gold Extraction ...

New Chloride Leaching Process for Gold Extraction from Refractory Ores. S. Chero-Osorio. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 35 Full PDFs related to this paper. READ PAPER. New Chloride Leaching Process for Gold Extraction from Refractory

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Direct Cupric Chloride Leaching of Gold from Refractory ...

2021-4-13  The results achieved indicate that the simultaneous oxidation of refractory sulfides and the leaching of gold in acidic cupric chloride solutions, i.e., direct chloride leaching could be an environmentally competitive alternative to the Reference process: pressure oxidation followed by gold leaching. However, this is only if certain ...

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Leaching of a Refractory Gold Ore Sample from the Central ...

A cyanidation study was conducted on a mild refractory gold ore sample from the Central zone of Clarence Stream Property, owned by Freewest Resources Canada, to develop a leaching strategy to extract gold. Gold, at a grade of 8.00 g/t, is present as native gold, electrum and aurostibite. The ore also contains 2.8 per cent pyrrhotite, together with several antimony minerals (0.8 per cent ...

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PRESSURE LEACHING - RPMGlobal

2020-1-22  The technical advantages of pressure leaching over atmospheric ... for their ore, but found pressure oxidation a better alternative. ... refractory pyritic gold ores. Refractory sulfide gold autoclaves can be designed to process flotation concentrates or accept

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Refractory gold ore - fokusmedia

2021-7-3  Refractory gold ore Anderson, C. G. (2008) ‘NSC pressure leaching: industrial and potential applications’, in Young, C. A. et al. (eds) Hydrometallurgy 2008:

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Recovery of gold from refractory gold ores: Effect of ...

2020-5-28  The extraction of gold from refractory gold ores (RGOs) without side reactions is an extremely promising endeavor. However, most RGOs contain large amounts of sulfide, such as pyrite. Thus, investigation of the influence of sulfide on the gold leaching process is important to maximize the utilization of RGOs. In this work, the effects of pyrite on the stability of the thiourea system were ...

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Refractory Gold Technology

2020-1-20  Refractory Gold Technology Sherritt’s Refractory Gold Technology is used to recover gold from refractory sulphide feedstocks. Many gold ores and concentrates contain fine grained gold locked within sulphide minerals, such as pyrite and/or arsenopyrite, unavailable for recovery by conventional leaching. In Sherritt’s gold process, the ...

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(PDF) Cyanidation of Refractory Gold Ores: A Review

In this paper, the effect of the oxidative pretreatment and lead nitrate addition on the cyanidation of Zarshuran refractory gold ore containing 3.32 ppm Au, 1.09% As, and 0.5% sulfur were ...

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Effect of Pretreatment of Sulfide Refractory Concentrate ...

2013-12-24  A clear boundary between refractory and non-refractory ore in terms of gold recovery is not well defined, but several authors have pointed out that less than 60% gold recovery by direct cyanide leaching, after fine grinding of mineral indicates a refractory mineral [1]. The refrac- tory ore must be destroyed or attacked by chemical

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Refractory gold reserves: Challenges and opportunities for ...

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 worldwide (Exhibit 1).

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Determination of the Leaching Parameters for a Refractory ...

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ALTA MetBytes - What's Happening in Gold Ore Processing

2020-1-15  CSIRO, Australia, has developed a thiosulfate-based reagent system for gold leaching that has excellent stability and shown broad applicability in the laboratory compared to the thiosulfate system commercially implemented by Barrick to treat double refractory gold ore following pressure oxidation at its Goldstrike Mine in Nevada, USA.

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Direct Cupric Chloride Leaching of Gold from Refractory ...

2021-4-13  PDF A simulation-based life cycle assessment was conducted to compare the impacts of different cyanide-free chloride processing routes for refractory... Find, read and cite all the research ...

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