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
doaj +2 more sources
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
doaj +2 more sources
LEACHING OF GOLD FROM FINE-GRAINED FLOTATION TAILINGS
GeoScience Engineering, 2020 This study focuses on leaching of gold from fine-grained waste materials from flotation. The input raw material is the waste product after flotation containing about 1–2.5 g/t of Au.
Sarah JANŠTOVÁ +2 more
doaj +3 more sources
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
doaj +3 more sources
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
doaj +1 more source
Experimental study on thiosulfate leaching of gold from a high copper gold concentrate [PDF]
E3S Web of Conferences, 2021 The conventional cyanide leaching process is used to extract gold from a high copper gold concentrate. Because the copper associated minerals consume sodium cyanide in large quantities, the cost of the reagents is high and the economic benefit is not ...
Yanbo Chen +10 more
doaj +1 more source
Application of Bio-Oxidation in Leaching of a Low-Grade Primary Gold Ore in Inner Mongolia
Kuangchan zonghe liyong, 2022 Bio-oxidation leaching test was conducted on a low-grade primary gold mine in Inner Mongolia. The acid consumption of ore, cyanidation, bio-oxidation stirred leaching, column leaching, add sulfur and sulfur concentrate to reduce acid consumption , and ...
Yongzhang Jian
doaj +1 more source
Experimental Study on the Dressing and Smelting of a Pyrrhotite-bearing Primary Gold Ore [PDF]
E3S Web of Conferences, 2023 The content of pyrrhotite in a primary gold mine containing pyrrhotite is 0.68%. In the process of alkaline leaching pretreatment, there are problems such as large ore quantity and high alkali consumption.
Chen Yanbo, Wang Junjie
doaj +1 more source
Experimental Study on Cyanidation Leaching of a Low-grade Gold Mine in Guangxi
Kuangchan zonghe liyong, 2023 Gold content of a low-grade gold ore in Guangxi is 1.29 g/t, the gangue minerals are mainly quartz, and the content of non-ferrous metals such as copper, lead, zinc and other harmful elements arsenic is extremely low.
Linsong Yuan +5 more
doaj +1 more source
Experimental Research on Environmental Friendly Gold Leaching of a Refractory Gold Ore in Laos
Kuangchan zonghe liyong, 2022 The gold ore type of the gold mining in Laos is altered rock. Gold is the only recyclable element in the ore. Metal minerals are mainly iron sulfides. Part of the gold is wrapped in sulfide, which belongs to the refractory gold ore.
Weigang Kang, Jingyu Chen
doaj +1 more source