Reaction chemistry of gold leaching in thiourea solution for a Turkish gold ore

Date

2002-12-01

Author

Orgul, S
Atalay, U

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

335
views

0
downloads

This study was carried out on a finely disseminated gold-bearing ore from Kaymaz, Turkey. The main objective was to determine the mechanism of reaction between thiourea and Fe 31 in the thiourea leaching of gold. Thiourea consumption levels were also examined during the leaching operations for different leaching parameters, i.e., molar ratio of ferric sulfate/thiourea, pH, and temperature. The leaching using the thiourea process was compared with cyanidation. In optimum leach conditions, 85.8% gold extraction was obtained with feed of -53 mum particle size in 6 h.

Subject Keywords

Industrial and Manufacturing Engineering, Materials Chemistry, Metals and Alloys

URI

https://hdl.handle.net/11511/64609

Journal

HYDROMETALLURGY

DOI

https://doi.org/10.1016/s0304-386x(02)00136-6

Collections

Department of Food Engineering, Article

Suggestions

OpenMETU
Core

Recovery of germanium and other valuable metals from zinc plant residues Kul, A.; Topkaya, Yavuz Ali (Elsevier BV, 2008-06-01) The main purpose of this study was to characterize and to extract germanium from the copper cake of Cinkur Zinc Plant. The physical, chemical and mineralogical characterization of the ground copper cake sample obtained from Cinkur showed that it was 84% below 147 pin containing 700 ppm germanium. The copper cake also contained 15.33% Cu, 15.63% Zn, 1.66% Cd, 1.33% Ni, 0.64% Co, 0.35% Fe, 2.62% Pb, 12.6% As, 0.18% Sb and 3.42% SiO2. The mineralogical analysis indicated the complex nature of the copper cake w...
Extraction of zinc from smithsonite by ammonia leaching TALAN, DENİZ; ATALAY, MUSTAFA ÜMİT; Altun, Naci Emre (2017-06-11) – In this study, an ore taken from Kayseri region of Turkey was used. Characterization studies showed that the run-of mine ore is rich in oxide minerals, cerussite (PbCO3) and smithsonite (ZnCO3). The aim of the study was extraction of zinc from smithsonite by ammonia leaching on cerussite flotation tailings. Initial lead and zinc grades of the ore were 13.31% and 27.86%, respectively. As a result of a series of cerussite flotation tests, a lead concentrate containing 63.25% Pb was produced with 82.76% reco...
Pressure acid leaching of Caldag lateritic nickel ore: An alternative to heap leaching Onal, Mehmet Ali Recai; Topkaya, Yavuz Ali (Elsevier BV, 2014-02-01) In this study, the leachability of Caldag lateritic nickel ore under high pressure acid leaching (HPAL) conditions was investigated. Several HPAL parameters were tested in a comparative manner since in many cases, the extraction efficiencies of Caldag ore sample were more than 90% for nickel and cobalt. After the optimization of the process parameters, it was found that 94.1% nickel and 94.0% cobalt could be extracted under the conditions of 325 kg sulfuric acid/tonne of dry ore, 250 degrees C leaching temp...
Development of novel pea flour-based nanofibres by electrospinning method Oğuz, Seren; Aydogdu, AYÇA; Şümnü, Servet Gülüm; Şahin, Serpil (Wiley, 2018-05-01) The aim of this study was to produce pea flour and hydroxypropyl methylcellulose (HPMC)-based novel nanofibres using electrospinning method. The effects of pH, pea flour and HPMC concentration on apparent viscosity, electrical conductivity of electrospinning solutions and nanofibre characteristics were studied. Solutions were prepared at different pH values (7, 10, 12), with different pea flour concentrations (1%, 2% w/v) and HPMC concentrations (0.25%, 0.5%, 1.0% w/v). For all pea flour concentrations, k v...
Reactivity of limestones from different sources in Turkey Hoşten, Çetin; Gulsun, M (Elsevier BV, 2004-01-01) This paper presents a study on the reactivity of natural limestones from five deposits in Turkey. The conversion rates of carbonates in size fractions of the samples were measured in a stirred suspension of 2.5 1 at 20 degreesC and a constant-pH value of 5 obtained with the addition of HCl solutions by a pH control pump. Particle size and the dolomite content of the limestones were found to be the most influential parameters in the reactivity measurements.

Citation Formats

S. Orgul and U. Atalay, “Reaction chemistry of gold leaching in thiourea solution for a Turkish gold ore,” HYDROMETALLURGY, pp. 71–77, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64609.