Beneficiation of oxide lead and zinc minerals by selective flotation and ammonia leaching

Date

2016

Author

Talan, Deniz

Metadata

Show full item record

Item Usage Stats

183
views

0
downloads

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, effect of pH was investigated. Later, galena flotation was conducted. According to the pre-determined flowsheet, two stages (rougher+cleaner) flotation was performed and effects of collector type and dosage on grade and recovery of galena was examined. As a result of the experiments, a galena concentrate containing 75.81 % Pb was produced using 200 g/t potassium amyl xanthate (KAX) and 53 g/t F-533 as frother. For flotation of cerussite, effects of dosage and conditioning time of sulfidizing agent, collector type and dosage and desliming were investigated. At the end of the cerussite flotation tests, a concentrate was obtained having 63.25% Pb and 82.76% overall recovery. Optimum conditions for this flotation were determined as; 2000 g/t sodium sulfide (Na2S) with 10 minutes of conditioning, 400 g/t potassium amyl xanthate (KAX) as collector and 53 g/t F-533 as frother at pH 9.5. Desliming had negative effect on grade and recovery since Pb distributed mostly in fine sizes. As the second part of the study, effects of different ammonia contained reagents, reagent concentration and leaching duration on leaching of smithsonite (ZnCO3) were examined. Within the context of the tests, ammonia (NH3), ammonium chloride (NH4Cl) and ammonium carbonate ((NH4)2CO3) were used at 5 M and 7 M concentrations for 30 minutes, 1 hour, 3 hours, 6 hours and 12 hours at ambient temperature. In consequence of the test results, the best result obtained as 86% Zn extraction with 7 M ammonium carbonate ((NH4)2CO3) solution and 12 hours of conditioning.

Subject Keywords

Zinc., Lead., Cerussite., Flotation., Leaching., Ammonia., Oxide minerals.

URI

http://etd.lib.metu.edu.tr/upload/12620408/index.pdf
https://hdl.handle.net/11511/26091

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Recovery of copper from oxide copper ore by flotation and leaching Kiraz, Emirhan; Atalay, Mustafa Ümit; Department of Mining Engineering (2014) The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was obtained from Çorum-Dangaz region of Turkey. Native copper, cuprite (Cu2O), tenorite (CuO), and malachite (Cu2(OH)2/CO3) were the main copper minerals in the test sample. Quartz, calcite, illite, chlorite, and plagioclase were determined as the main gangue minerals of the sample. The mesh of grind size of copper mi...
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 ...
Synergistic fire retardancy of colemanite, a natural hydrated calcium borate, in high-impact polystyrene containing brominated epoxy and antimony oxide Kaynak, Cevdet (2011-05-01) This study explores for the first time the synergistic fire retardant action of natural hydrated calcium borate, namely the mineral colemanite, which partially replaces antimony oxide in brominated flame retardant high-impact polystyrene compounds. Various antimony oxide to hydrated calcium borate ratios were employed keeping the brominated flame retardant additive at a constant loading level. With partial colemanite substitution for antimony oxide, lower heat release rate, total heat evolved and fire growt...
EVALUATION OF PYRITIC TAILINGS FROM A COPPER CONCENTRATION PLANT FOR CALCAREOUS SODIC SOIL RECLAMATION TOZSİN, Gülşen; Arol, Ali İhsan; ÇAYCI, GÖKHAN (2014-01-01) This study was aimed to investigate the feasibility to use waste pyrite and sulphuric acid produced from waste pyrite for the reclamation of calcareous sodic soils. The final aim is to displace Na from an exchange complex and replace it with Ca, leading to a decrease in pH and exchangeable sodium percentage (ESP) and an improvement of soil structure. A fertility of the soil may also be enhanced by this technique since waste pyrite can be rich in several micronutrients. An additional advantage to this strate...
Production of precipitated calcium carbonate from marble wastes Sezer, Nurettin; Arol, Ali İhsan; Department of Mining Engineering (2013) The aim of this study was to investigate the production of precipitated calcium carbonate from marble wastes. Limestone is used as the source for the production of precipitated calcium carbonate. Marble wastes primarily constitute of CaCO3. As the major content of the marble waste and limestone are the same, marble wastes can be used as an alternative source for the production of precipitated calcium carbonate. By this way, both the adverse environmental effects of marble wastes can be prevented and the was...

Citation Formats

D. Talan, “Beneficiation of oxide lead and zinc minerals by selective flotation and ammonia leaching,” M.S. - Master of Science, Middle East Technical University, 2016.