Extraction of zinc from smithsonite by ammonia leaching

Altun, Naci Emre
– 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% recovery. After that, tailing of flotation was treated with ammonia (NH3) to extract zinc. For that purpose, 5M and 7M of NH3 solutions were used for 30 minutes, 1 hour, 3 hours, 6 hours and 12 hours. In consequence of the leaching experiments, the highest extraction rate was obtained as 76.66% using 7M NH3 solution with 12 hours of treatment.


Reaction chemistry of gold leaching in thiourea solution for a Turkish gold ore
Orgul, S; Atalay, U (Elsevier BV, 2002-12-01)
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 extracti...
Recovery of rare earths from a bastnaesite preconcentrate
Topkaya, Yavuz Ali; Karakaya, I (2000-03-16)
In this study, a bastnaesite type rare earth ore located in Beylikahir in Turkey was used. The total rare earth oxide (REO) content of the deposit is estimated to be 1 million tons with an average concentration of 3.42%REO. The rare earths are contained in bastnaesite mineral. The other constituents of the ore are calcium fluoride (52.5%), barite (25.4%), calcite (2.8%) and minor amounts of thorium, etc. The bastnaesite mineral occurs either as cement material between fluoride and barite particles or is int...
Kinetic analysis of central anatolia oil shale by combustion cell experiments
Iscan, A. G.; Kök, Mustafa Verşan; Bagci, A. S. (Springer Science and Business Media LLC, 2007-06-01)
In this study, four oil-shale samples (Nigde-Ulukisla) excavated from Central Anatolia Turkey were analyzed where this region is believed to have a high potential of oil in its shale rich outcrops. The samples (similar to 40 g) were combusted at 50 psi gas injection pressure, at an air injection rate of 1.5 L min(-1) in a combustion-reaction cell. All the experiments were conducted up to 600 degrees C. The percentages of oxygen consumption and carbon monoxide and carbon dioxide production were obtained inst...
Beneficiation of carbonaceous lead and zinc ores by a combined flotation and leaching method
Sarılar, Sena; Atalay, Mustafa Ümit.; Department of Mining Engineering (2019)
Within the scope of this thesis study carbonaceous lead and zinc ore obtained from Yozgat – Akdağmadeni region of Turkey was used. Main objective of the study is to obtain lead concentrate at possible maximum grade and recovery rates by using conventional flotation beneficiation method. In addition to that second main motivation of the study is the extraction of zinc from flotation tailing by using hydrometallurgical method named as leaching under a range of experimental conditions by using different types ...
Evaluation of site effect within the tectonic basin in the northern side of Ankara
Eker, Arif Mert; Kockar, Mustafa Kerem; Akgün, Haluk (2015-06-18)
This study mainly concentrates on the determination of site effects for the Plio-Quaternary and especially alluvial soils of the Cubuk district and its close vicinity in Ankara, Turkey. In the study area, particularly in the vicinity of the asymmetric graben that has formed due to the tectonic activities along the NE-SW trending normal faults, a microtremor survey was implemented to identify the local site response under a possible seismic event. The results were compared and correlated by using passive and...
Citation Formats
D. TALAN, M. Ü. ATALAY, and N. E. Altun, “Extraction of zinc from smithsonite by ammonia leaching,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37454.