Results 1 to 10 of about 274,187 (149)
Bromic acid-thiourea synergistic leaching of sulfide gold ore
Green Processing and SynthesisBromate–thiourea coordinated leaching of gold sulfide ore for gold sulfide ore as leaching object. The effects of leaching reagent, stirring speed, and leaching time on gold leaching were investigated in this article.
Zhang Qiang
exaly +3 more sources
Microwave Pretreatment for Thiourea Leaching for Gold Concentrate
Metals, 2017 In this research, we studied the use of microwave pretreatment to enhance the efficiency of Au leaching from gold concentrate. The gold concentrate was pretreated using microwaves with different irradiation time.
Soonjae Lee +2 more
exaly +4 more sources
Metals, 2022 The nature of gold (Au) ore deposits plays an essential role in determining the best gold recovery method as an alternative to cyanidation, considering environmental concerns.
Jeanne Pauline Munganyinka +8 more
doaj +2 more sources
Oxidation-free thiourea leaching of gold uthig sulphur dioxide [PDF]
BIO Web of ConferencesThe paper summarizes research on gold recovery by the Carbon in Leach (CIL) process using thiourea by feeding sulphur dioxide by a hydroacoustic emitter. It was found that the use of such a device favors the formation of the radical OH*.
Boboev Ikromjon +4 more
doaj +2 more sources
Enhancement of thiourea leaching performance of refractory silver tailings by mechanical activation
Scientific ReportsRefractory silver tailings are both an environmental liability and a potential secondary resource for precious metals. However, strong mineralogical locking of silver-bearing phases within barite and aluminosilicate matrices severely limits silver ...
Fatih Apaydin
doaj +2 more sources
WasteThe development of efficient recovery methods for waste printed circuit boards (WPCBs) not only tackles the environmental risks of disposal but also promotes the conservation of resources within the electronics industry.
Serap Ubiç +2 more
doaj +2 more sources
Green Processing and SynthesisTo address the highly toxic defect of traditional cyanide gold leaching and the technical bottlenecks of the single thiourea gold leaching system, this study employed the [Co(NH3)6]3+/[Co(NH3)6]2+ redox couple as a new-type oxidant, and conducted ...
Chao Deng, Xiang Pengzhi, Yang Hui
doaj +2 more sources
ProcessesThe cyanidation of precious metals from ores and secondary resources has been classified as a hazardous process due to the release of toxic gases. The use of environmentally friendly and cost-effective processes is a suitable alternative to cyanidation ...
Aigul Koizhanova +2 more
exaly +2 more sources
Evaluation of gold adsorption on activated carbon from real cyanide and thiourea leachate solutions [PDF]
HeliyonThe recovery of gold by adsorption using activated carbon from sodium cyanide and thiourea leached solutions are reported in this study. The leached solutions were obtained under real operating conditions from the beneficiation plant “Paz Borja”, Machala-
Hugo Romero +4 more
doaj +2 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