Results 11 to 20 of about 405,346 (229)
Thiourea leaching of gold in presence of jarosite and role of oxalate
Transactions of Nonferrous Metals Society of ChinaKe Li +6 more
exaly +3 more sources
Leaching of Ovacik gold ore with cyanide, thiourea and thiosulphate
Minerals Engineering, 2005 In this study, leaching kinetics of Ovacik gold ore, which is the first project of what is potentially a large new mining industry in Turkey, has been investigated and major parameters have been determined using cyanide, thiourea and thiosulphate.
TANRIVERDİ, MEHMET +2 more
core +3 more sources
Effect of Stabilizer on Gold Leaching with Thiourea in Alkaline Solutions [PDF]
Minerals, 2022 The present work investigated the comparison of the effects of Na2SO3 and Na2SiO3 on thiourea stabilization, and a systematic study was undertaken to establish the effects of these stabilizers on the stability of alkaline thiourea, both qualitatively and
He Zhou +5 more
core +2 more sources
Gold leaching with thiourea and oxalate in acid medium
MRS AdvancesProcessing of high-grade gold ores is uncommon, so extraction is currently carried out using conventional methods, with cyanide as the agent due to its high selectivity and stability. Despite its popularity, this process presents environmental risks,
D. Calla-Choque, J. E. Fuentes-Rubio
semanticscholar +2 more sources
Spectroelectrochemical investigations of gold leaching in thiourea media
Minerals Engineering, 2008 Surface-enhanced Raman scattering (SERS), facilitated via suitably prepared gold surfaces, has been used to observe sub-monolayer surface species and oxidation products derived from thiourea during leaching.
Hope, GA, Parker, GK
core +3 more sources
Determination of thiourea leaching conditions of Ovacık gold ore
, 1996 Siyanürizasyon yöntemi ile cevherlerinden altın ve gümüşün kazanılması dünya çapında uygulanan geleneksel bir metotdur. Bununla birlikte bu prosesin başta çevresel etkiler olmak üzere ban dezavantajlara sahip olması, araştırmacıları siyanüre alternatif ...
HALUK ÇELİK
core +2 more sources
Maximizing Active Site Density in Tin Single-Site Catalysts for Selective Carbon Dioxide to Formate Electroreduction. [PDF]
Angew Chem Int Ed EnglHigh‐loading tin single‐site catalysts (>7.5 wt.% Sn) are synthesized using a nitrogen‐enriched carbon scaffold and mechanochemically assisted pyrolysis to stabilize atomically dispersed Sn. The resulting Sn/N‐C‐M catalyst enables highly selective CO2‐to‐formate conversion (>90% FE across 50–500 mA cm−2) with long‐term durability and operando‐verified ...
Potemkin K +12 more
europepmc +3 more sources
Thiourea Leaching: An Update on a Sustainable Approach for Gold Recovery from E-waste
Journal of Sustainable Metallurgy, 2022 Electronic waste is a dominant global issue with over 50 million tons generated annually. Still, as an amalgamation of precious and rare raw materials, electronic waste is a considerable economic resource with the most valuable components located on the ...
D. Ray +4 more
semanticscholar +1 more source
The comparison of gold extraction methods from the rock using thiourea and thiosulfate
Open Chemistry, 2023 Gold extraction from the rock is generally carried out using mercury. However, the high toxicity of mercury has a very dangerous impact on the environment and health.
Yanti Ika +4 more
doaj +1 more source