Results 1 to 10 of about 1,040,720 (337)
Investigation on Gold-Ligand Interaction for Complexes from Gold Leaching: A DFT Study. [PDF]
Molecules, 2023 Gold leaching is an important process to extract gold from ore. Conventional alkaline cyanide process and alternative nontoxic lixiviants including thiosulfate, thiourea, thiocyanate, and halogen have been widely investigated. However, density functional
Zhang N, Kou J, Sun C.
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Gold Leaching from an Oxide Ore Using Thiocyanate as a Lixiviant: Process Optimization and Kinetics. [PDF]
ACS Omega, 2021 Thiocyanate (SCN–) is a promising alternative to cyanide as a lixiviant for gold extraction and is 1000 times less toxic than cyanide. In this study, the following leaching parameters were tested to optimize the gold recovery for the first time from an ...
Azizitorghabeh A +3 more
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Highly Efficient Recovery of Au(I) from Gold Leaching Solution Using Sodium Dimethyldithiocarbamate. [PDF]
ACS OmegaAs a sustainable, nontoxic and environmentally friendly cyanide-free gold leaching agent, thiosulfate has been applied to some extent in the field of hydrometallurgy.
Yang P, Li X, Chen S, Zi F, Hu X.
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Kinetic Investigation and Dissolution Behavior of Cyanide Alternative Gold Leaching Reagents. [PDF]
Sci Rep, 2019 Raising social awareness and environmental specifications on cyanide application force gold industry to search for alternative leaching reagents. Therefore, researchers worldwide investigate cyanide alternatives for gold recovery since several decades ...
Birich A, Stopic S, Friedrich B.
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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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Gold Leaching with Humic Substances
Journal of Mining Science, 2019 The study results of gold leaching using the products of humic acids, as well as stage-by-stage fractionation of parent and gold-containing substances of these acids are presented. The gold content in the pregnant solution was up to 14–30 mg/l. Chemical analysis of the supernatant obtained by a stepwise change in pH of the solution and subsequent ...
A. V. Zashikhin, M. L. Sviridova
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Research progress of non-cyanide gold leaching in gold mines
工程科学学报, 2021 With the exhaustion of easy-to-treat gold ore resources, gold ores containing arsenic, carbon, high sulfur, and ultrafine particles have become the focus of gold mining.
Ke-bo PENG +7 more
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Effect of sodium acetate additive on gold leaching with cyanide solution: Laboratory and semi-pilot leaching tests [PDF]
HeliyonHeap leaching with a cyanide solution is used for processing low-grade ores; however, owing to the chemical, mineralogical, and physical characteristics of ores and their particle size distribution, extraction efficiencies are often low.
Bauyrzhan Surimbayev +6 more
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Thiosulfate leaching in carbonaceous gold-bearing ores in Ethiopia
Scientific ReportsOne of the main unit operations in metallurgical processing plant designs is gold leaching. The traditional cyanidation process was chosen and is currently in widespread use.
Kaleb Jia Chaka, Steven M. Rupprecht
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Study on Technological Process Innovation of Non-Cyanide Leaching [PDF]
E3S Web of Conferences, 2021 Nowadays, there are many gold leaching processes, and the dominant one is cyanidation, but the virulence of cyanidation seriously endangers the environment and human health. In order to reduce environmental pollution and improve the recovery rate of gold,
Chao Xu +10 more
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