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Effect of mechanical activation on thiosulfate leaching of gold from complex sulfide concentrate Mohsen HASHEMZADEHFINI1, Jana FICERIOV?2, Emad ABKHOSHK3, Behrouz Karimi SHAHRAKI1 1. Iran Mineral... was investigated. The effects of milling time, ball size, sample to ball ratio and milling speed on thiosulfate leaching were studied. Under optimum conditions of milling time 1 h, ball size 20 mm, sample......
Role of oxygen and ammonium ions in silver leaching with thiosulfate–ammonia–cupric ionsValentin Ibarra-Galvan1,Alejandro López-Valdivieso2,Xiong Tong3,Yi-Qi Cui31. Faculty of Chemistry, Colima... id="ChDivSummary" name="ChDivSummary">The dissolution of silver with thiosulfate and copper ions was studied in a batch-stirred reactor at 25 °C in the absence and presence of various ammonium ions......
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Effects of thiosulfate and dissolved oxygen on crevice corrosion of Alloy 690 in high-temperature chloride solutionFangqiang Ning1,2,Jibo Tan1,Ziyu Zhang1,Xinqiang Wu1,Xiang Wang1,En-Hou Han1,Wei... was investigated in high-temperature chloride solution containing different concentrations of thiosulfate(S2O32-) and dissolved oxygen(DO). The S2O32- inhibited corrosion of Alloy 690 through consuming oxygen......
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alkaline leaching(IAL), thiosulfate leaching and cementation by zinc powder. The experimental results show that the grinding-leaching and intensified alkaline leaching process result in the selective... the conditions of full oxidization for the same amount of arsenopyrite and pyrite transforming into arsenates and sulfates, and 83.6% of gold is synchro-dissoluted by thiosulfate self-generated during......
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