Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid
Authors
Sokić, MiroslavMarković, Branislav
Stanković, Srđan
Karnberović, Željko
Štrbac, Nada
Manojlović, Vaso
Petronijević, Nela
Article (Published version)
Metadata
Show full item recordAbstract
In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite, galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates obtained by flotation of such ores are unsuitable for pyrometallurgical processing owing to their poor quality and low metal recovery. This paper presents the leaching of chalcopyrite concentrate from the location "Rudnik, Serbia". The samples from the flotation plant were treated with hydrogen peroxide in sulfuric acid. The influences of temperature, particle size, stirring speed, as well as the concentrations of hydrogen peroxide and sulfuric acid were followed and discussed. Hence, the main objective was to optimize the relevant conditions and to determine the reaction kinetics. It was remarked that the increase in temperature, hydrogen peroxide content, and sulfuric acid concentration, as well as the decrease in particle size and stirring speed, contribute to the dissolution of chalcopyrite. The dis...solution kinetics follow a model controlled by diffusion, and the lixiviant diffusion controls the rate of reaction through the sulfur layer. Finally, the main characterization methods used to corroborate the obtained results were X-ray diffraction (XRD) as well as qualitative and quantitative light microscopy of the chalcopyrite concentrate samples and the leach residue.
Keywords:
chalcopyrite concentrate / hydrogen peroxide / sulfuric acid / leaching kineticsSource:
Metals, 2019, 9, 11Publisher:
- MDPI, Basel
Funding / projects:
- Developing technological processes for nonstandard copper concentrates processing with the aim to decrease pollutants emission (RS-MESTD-Technological Development (TD or TR)-34023)
- Innovative synergy of by-products, waste minimization and clean technologies in metallurgy (RS-MESTD-Technological Development (TD or TR)-34033)
DOI: 10.3390/met9111173
ISSN: 2075-4701
WoS: 000504411600041
Scopus: 2-s2.0-85074394322
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Sokić, Miroslav AU - Marković, Branislav AU - Stanković, Srđan AU - Karnberović, Željko AU - Štrbac, Nada AU - Manojlović, Vaso AU - Petronijević, Nela PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4112 AB - In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite, galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates obtained by flotation of such ores are unsuitable for pyrometallurgical processing owing to their poor quality and low metal recovery. This paper presents the leaching of chalcopyrite concentrate from the location "Rudnik, Serbia". The samples from the flotation plant were treated with hydrogen peroxide in sulfuric acid. The influences of temperature, particle size, stirring speed, as well as the concentrations of hydrogen peroxide and sulfuric acid were followed and discussed. Hence, the main objective was to optimize the relevant conditions and to determine the reaction kinetics. It was remarked that the increase in temperature, hydrogen peroxide content, and sulfuric acid concentration, as well as the decrease in particle size and stirring speed, contribute to the dissolution of chalcopyrite. The dissolution kinetics follow a model controlled by diffusion, and the lixiviant diffusion controls the rate of reaction through the sulfur layer. Finally, the main characterization methods used to corroborate the obtained results were X-ray diffraction (XRD) as well as qualitative and quantitative light microscopy of the chalcopyrite concentrate samples and the leach residue. PB - MDPI, Basel T2 - Metals T1 - Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid IS - 11 VL - 9 DO - 10.3390/met9111173 ER -
@article{ author = "Sokić, Miroslav and Marković, Branislav and Stanković, Srđan and Karnberović, Željko and Štrbac, Nada and Manojlović, Vaso and Petronijević, Nela", year = "2019", abstract = "In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite, galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates obtained by flotation of such ores are unsuitable for pyrometallurgical processing owing to their poor quality and low metal recovery. This paper presents the leaching of chalcopyrite concentrate from the location "Rudnik, Serbia". The samples from the flotation plant were treated with hydrogen peroxide in sulfuric acid. The influences of temperature, particle size, stirring speed, as well as the concentrations of hydrogen peroxide and sulfuric acid were followed and discussed. Hence, the main objective was to optimize the relevant conditions and to determine the reaction kinetics. It was remarked that the increase in temperature, hydrogen peroxide content, and sulfuric acid concentration, as well as the decrease in particle size and stirring speed, contribute to the dissolution of chalcopyrite. The dissolution kinetics follow a model controlled by diffusion, and the lixiviant diffusion controls the rate of reaction through the sulfur layer. Finally, the main characterization methods used to corroborate the obtained results were X-ray diffraction (XRD) as well as qualitative and quantitative light microscopy of the chalcopyrite concentrate samples and the leach residue.", publisher = "MDPI, Basel", journal = "Metals", title = "Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid", number = "11", volume = "9", doi = "10.3390/met9111173" }
Sokić, M., Marković, B., Stanković, S., Karnberović, Ž., Štrbac, N., Manojlović, V.,& Petronijević, N.. (2019). Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid. in Metals MDPI, Basel., 9(11). https://doi.org/10.3390/met9111173
Sokić M, Marković B, Stanković S, Karnberović Ž, Štrbac N, Manojlović V, Petronijević N. Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid. in Metals. 2019;9(11). doi:10.3390/met9111173 .
Sokić, Miroslav, Marković, Branislav, Stanković, Srđan, Karnberović, Željko, Štrbac, Nada, Manojlović, Vaso, Petronijević, Nela, "Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid" in Metals, 9, no. 11 (2019), https://doi.org/10.3390/met9111173 . .