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Research progress on non-cyanide leaching of refractory gold ores
工程科学学报, 2019 With the increasing demand for gold and the decreasing of easily treated gold resources, refractory gold ores, which are characterized by low gold recovery and high cyanide consumptions when subjected to direct cyanide leaching, have gradually become the
JIA Yu-juan +3 more
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New possibilities in leaching of gold ores [PDF]
, 2022 The thesis is oriented to alternative methods for cyanide leaching in gold processing. This thesis aims to show the methodology of new leaching processes, point out possible alternatives in the market for processing raw materials and approach the ...
Tache, Richard
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Metals, 2022 The leaching behaviors of gold and silver from a complex sulfide concentrate in copper-tartrate-thiosulfate solutions were investigated in this paper. Experimental parameters, including temperature, initial pulp pH, and concentration of copper, tartrate,
Junnan Chen +4 more
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Kuangchan zonghe liyong, 2023 Gold resources in China are mainly concentrated in Shandong, Gansu, Xinjiang, Inner Mongolia, Henan and Yunnan Provinces, which are mainly composed of placer gold, rock gold and associated gold.
Man Qiu +3 more
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Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore
, 2021 Oxygen pressure alkaline self-leaching of gold is an environmentally friendly and smokeless leaching process. But the insoluble iron oxide generated will precipitate on the surface of parent minerals, thus reducing the oxidation reaction and gold ...
Wu, Hao +4 more
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Cyanide leaching of gold catalysts
Catalysis Communications, 2015 Abstract Gold catalysts remain of great interest, but a high gold price presents a concern. Gold can be leached from gold–titania catalysts using alkaline cyanide solutions. The specific activity of gold for CO oxidation can thereby be increased substantially, though the precise nature of the gold before and after treatment remains unclear.
M.C. Raphulu, M.S. Scurrell
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On the progression of leaching from large particles in heaps [PDF]
, 2012 Includes bibliographical references.Although heap leaching is by now a well-established technology choice in the mining industry, the process remains limited by low recoveries and long extraction times.
Ghorbani, Yousef
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Equilibrium, 2023 Gold is a very important metal in human life. Most gold is processed using the sodium cyanide (NaCN) leaching method. Maximizing the leaching recovery can be done by optimizing the leaching process parameters, one of which varies the concentration of ...
Frideni Yushandiana Putri GF +2 more
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Thiosulphate leaching for gold hydrometallurgy
Hydrometallurgy, 1995 Thiosulphate leaching of precious metals has been developed as an alternative and non-toxic technique to the conventional cyanidation. This process has advantages over cyanide in a decreased interference from foreign cations and a lower environmental impact.
Abbruzzese C +4 more
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Metals, 2021 Gold as a precious metal resource has high recycling significance. However, the current extraction methods cannot achieve the both efficiency and environmental friendliness.
Feng Feng +10 more
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