Beneficiation of carbonaceous lead and zinc ores by a combined flotation and leaching method

Sarılar, Sena
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 of leaching reagents. According to chemical analysis of run of mine material, the ore contains 3.17% Pb, 6.19% Zn and 6.72% Fe, 4.35% Al, 23.16 % Si. As was expected, iron, aluminum and silica were observed as the main impurities, thereby efforts were focused on the rejection of these elements. Moreover, mineralogical analysis indicated that the major zinc bearing minerals are smithsonite (zinc carbonate) and willemite (zinc silicate) in addition to that major lead mineral is cerussite (lead carbonate). Within the scope of present study, cerussite concentrate having 60.20% Pb grade at 64.29% recovery rate by using 250 g/t Na2SiO3 as dispersant (conditioned for 10 minutes), H2SO4 as pH regulator, 4000 g/t Na2S as sulfidizer agent (conditioned for 15 minutes), 500 g/t PAX as collector (conditioned for 10 minutes) and 75 g/t F-533 as frother was applied. In order to obtain maximum possible grade at a maximum reasonable recovery value 3 cleaning stages without vi additional reagent were applied. Following, by using flotation tailing as feed material for leaching tests 60 leaching test by using sulphuric acid, ammonia, ammonium carbonate, ammonium chloride, citric acid and boric acid were conducted under range of variable operational parameters. With the consideration of performed leaching tests statistical models were constructed in order to determine optimum leaching parameters and leaching reagent which provide maximum zinc extraction ratio with rejection of impurities. From the this point of view ammonium chloride leaching provided maximum reasonable technical zinc extraction rate as 86.17% rate by using 5 M ammonium chloride at 90°C with leach duration as 60 minutes. From the industrial applicability point of view sulphuric acid leaching would be considered as best solution since 96.63% Zn was extracted rates by using 1M sulphuric acid at 30°C with leaching duration as 60 minutes.


Beneficiation of Himmetoglu oil shale by flotation as a solid fuel substitute. Part 1. Materials characteristics and flotation behavior
Altun, Naci Emre; Hwang, JY; Bagci, AS (2006-01-01)
In this study, the processing of Himmetoglu oil shale from Bolu, Turkey, by flotation techniques was investigated for the possibility of achieving a clean solid-fuel substitute. The surface characteristics and mineral content of Himmetoglu oil shale were determined using mineralogical, XRD, and FIR analysis. The flotation response of the sample was tested with several nonionizing collectors and a variety of ionizing collectors belonging to both cationic and anionic groups. The effects of collector dosage an...
Beneficiation of Himmetoglu oil shale by flotation as a solid fuel substitute. Part 2. Process optimization by a statistical approach
Altun, Naci Emre; Hwang, HY; Bagci, AS (American Chemical Society (ACS), 2006-01-01)
The effects of the important flotation parameters on the cleaning process of the Himmetoglu oil shale from Turkey were investigated. The individual and multiple interaction effects of conditioning time, flotation time, pulp density, particle size, and frother dosage were determined using statistical analysis and factorial design of experiments. The influence of these parameters on the cleaning performance were evaluated in terms of ash yield, calorific value, and combustible recovery of the concentrates. XR...
Extraction of nickel and cobalt from lateritic ores by nitric acid /
Saka, Onur; Topkaya, Yavuz Ali; Department of Metallurgical and Materials Engineering (2014)
This thesis study is related to the extraction kinetics of nickel and cobalt from lateritic nickel ores from Gördes/Manisa region of Turkey. The experimental studies involved the optimization of nitric acid leaching of nickel laterite ores at atmospheric pressure for high nickel and cobalt extraction. The main parameters optimized after the characterization of laterites were the nitric acid concentration, leaching temperature, duration of leaching and the particle size of the ore sample. The atmospheric lea...
Beneficiation of oxide lead and zinc minerals by selective flotation and ammonia leaching
Talan, Deniz; Atalay, M Ümit Atalay; Altun, Naci Emre; Department of Mining Engineering (2016)
This study was aimed to concentrate a carbonate rich lead and zinc ore by selective flotation and agitating ammonia leaching. Run-of-mine ore with 13.59% Pb and 28.31% Zn used in this study was provided from Kayseri-Develi region of Turkey. Initially the mineralogical characterization of the ore was performed using polarized microscopy and that showed cerussite (PbCO3) and smithsonite (ZnCO3) are the main components in the ore together with dolomite and limonite as gangue minerals. Prior to flotation tests,...
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...
Citation Formats
S. Sarılar, “Beneficiation of carbonaceous lead and zinc ores by a combined flotation and leaching method,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mining Engineering., Middle East Technical University, 2019.