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Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid

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2014
304.pdf (327.5Kb)
Authors
Sokić, Miroslav
Radosavljević, Slobodan
Marković, Branislav
Matković, Vladislav
Štrbac, Nada
Kamberović, Željko
Živković, Dragana
Article (Published version)
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Abstract
During the chalcopyrite leaching by sodium nitrate and sulfuric acid solution, leaching rate decreases with increasing the time and a part of chalcopyrite mineral grains remains in the leach residue. In chalcopyrite concentrate, 95.5 % of chalcopyrite mineral occurs as in liberated grains, and the rest is in association with gangue minerals, which is very favorably from the aspect of hydrometallurgical treatment. Complex forms, like impregnations and complex intergrowths, do not exist. After experiments carried out, leaching of copper achieved 84 % at temperature 80 degrees C and time 240 min. In the all leach residues, 97 % chalcopyrite mineral grains occur as liberated with highly corroded surfaces. Therefore, the structural assembly of chalcopyrite grains is favorable and no reason to reduce the leaching rate in the final stage of reaction. Reason for this is elemental sulfur, which was formed during the reaction, precipitated at the particle surfaces, and slowed down the leaching r...ate in the final stage of leaching process.

Keywords:
structural characteristics of mineral grains / quantitative microscopic analysis / chalcopyrite leaching
Source:
Metallurgical & Materials Engineering, 2014, 20, 1, 53-60
Publisher:
  • Savez inženjera metalurgije Srbije, Beograd
Funding / projects:
  • Developing technological processes for nonstandard copper concentrates processing with the aim to decrease pollutants emission (RS-34023)
  • Innovative synergy of by-products, waste minimization and clean technologies in metallurgy (RS-34033)

DOI: 10.5937/metmateng1401053S

ISSN: 2217-8961

WoS: 000216053800006

[ Google Scholar ]
URI
https://ritnms.itnms.ac.rs/handle/123456789/307
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovina
TY  - JOUR
AU  - Sokić, Miroslav
AU  - Radosavljević, Slobodan
AU  - Marković, Branislav
AU  - Matković, Vladislav
AU  - Štrbac, Nada
AU  - Kamberović, Željko
AU  - Živković, Dragana
PY  - 2014
UR  - https://ritnms.itnms.ac.rs/handle/123456789/307
AB  - During the chalcopyrite leaching by sodium nitrate and sulfuric acid solution, leaching rate decreases with increasing the time and a part of chalcopyrite mineral grains remains in the leach residue. In chalcopyrite concentrate, 95.5 % of chalcopyrite mineral occurs as in liberated grains, and the rest is in association with gangue minerals, which is very favorably from the aspect of hydrometallurgical treatment. Complex forms, like impregnations and complex intergrowths, do not exist. After experiments carried out, leaching of copper achieved 84 % at temperature 80 degrees C and time 240 min. In the all leach residues, 97 % chalcopyrite mineral grains occur as liberated with highly corroded surfaces. Therefore, the structural assembly of chalcopyrite grains is favorable and no reason to reduce the leaching rate in the final stage of reaction. Reason for this is elemental sulfur, which was formed during the reaction, precipitated at the particle surfaces, and slowed down the leaching rate in the final stage of leaching process.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid
EP  - 60
IS  - 1
SP  - 53
VL  - 20
DO  - 10.5937/metmateng1401053S
UR  - conv_480
ER  - 
@article{
author = "Sokić, Miroslav and Radosavljević, Slobodan and Marković, Branislav and Matković, Vladislav and Štrbac, Nada and Kamberović, Željko and Živković, Dragana",
year = "2014",
abstract = "During the chalcopyrite leaching by sodium nitrate and sulfuric acid solution, leaching rate decreases with increasing the time and a part of chalcopyrite mineral grains remains in the leach residue. In chalcopyrite concentrate, 95.5 % of chalcopyrite mineral occurs as in liberated grains, and the rest is in association with gangue minerals, which is very favorably from the aspect of hydrometallurgical treatment. Complex forms, like impregnations and complex intergrowths, do not exist. After experiments carried out, leaching of copper achieved 84 % at temperature 80 degrees C and time 240 min. In the all leach residues, 97 % chalcopyrite mineral grains occur as liberated with highly corroded surfaces. Therefore, the structural assembly of chalcopyrite grains is favorable and no reason to reduce the leaching rate in the final stage of reaction. Reason for this is elemental sulfur, which was formed during the reaction, precipitated at the particle surfaces, and slowed down the leaching rate in the final stage of leaching process.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid",
pages = "60-53",
number = "1",
volume = "20",
doi = "10.5937/metmateng1401053S",
url = "conv_480"
}
Sokić, M., Radosavljević, S., Marković, B., Matković, V., Štrbac, N., Kamberović, Ž.,& Živković, D.. (2014). Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 20(1), 53-60.
https://doi.org/10.5937/metmateng1401053S
conv_480
Sokić M, Radosavljević S, Marković B, Matković V, Štrbac N, Kamberović Ž, Živković D. Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid. in Metallurgical & Materials Engineering. 2014;20(1):53-60.
doi:10.5937/metmateng1401053S
conv_480 .
Sokić, Miroslav, Radosavljević, Slobodan, Marković, Branislav, Matković, Vladislav, Štrbac, Nada, Kamberović, Željko, Živković, Dragana, "Influence of chalcopyrite structure on their leaching by sodium nitrate in sulphuric acid" in Metallurgical & Materials Engineering, 20, no. 1 (2014):53-60,
https://doi.org/10.5937/metmateng1401053S .,
conv_480 .

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