Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H2O2, at room temperature after 120 minutes of reaction. At the same time, 55% of the iron from the slag was also dissolved. The copper extraction increased during the first 60 minutes of reaction and essentially ceased thereafter. Because of a rapid catalytic decomposition of hydrogen peroxide, it should be added continuously to the leach suspension rather than at once at the beginning of the experiment. In fact, it appears that almost complete dissolution of copper from the slag is achievable after about 4 hours of leaching by implementing the method of continuous lixiviant addition. Also, it seems that the final iron extraction could be limited to as low as 20% by using this method.
TY - JOUR
AU - Dimitrijević, M.
AU - Urošević, Daniela
AU - Milić, S.
AU - Sokić, Miroslav
AU - Marković, R.
PY - 2017
UR - https://ritnms.itnms.ac.rs/handle/123456789/445
AB - Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H2O2, at room temperature after 120 minutes of reaction. At the same time, 55% of the iron from the slag was also dissolved. The copper extraction increased during the first 60 minutes of reaction and essentially ceased thereafter. Because of a rapid catalytic decomposition of hydrogen peroxide, it should be added continuously to the leach suspension rather than at once at the beginning of the experiment. In fact, it appears that almost complete dissolution of copper from the slag is achievable after about 4 hours of leaching by implementing the method of continuous lixiviant addition. Also, it seems that the final iron extraction could be limited to as low as 20% by using this method.
PB - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2 - Journal of Mining and Metallurgy Section B-Metallurgy
T1 - Dissolution of copper from smelting slag by leaching in chloride media
EP - 412
IS - 3
SP - 407
VL - 53
DO - 10.2298/JMMB170425016D
UR - conv_810
ER -
@article{
author = "Dimitrijević, M. and Urošević, Daniela and Milić, S. and Sokić, Miroslav and Marković, R.",
year = "2017",
abstract = "Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H2O2, at room temperature after 120 minutes of reaction. At the same time, 55% of the iron from the slag was also dissolved. The copper extraction increased during the first 60 minutes of reaction and essentially ceased thereafter. Because of a rapid catalytic decomposition of hydrogen peroxide, it should be added continuously to the leach suspension rather than at once at the beginning of the experiment. In fact, it appears that almost complete dissolution of copper from the slag is achievable after about 4 hours of leaching by implementing the method of continuous lixiviant addition. Also, it seems that the final iron extraction could be limited to as low as 20% by using this method.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Journal of Mining and Metallurgy Section B-Metallurgy",
title = "Dissolution of copper from smelting slag by leaching in chloride media",
pages = "412-407",
number = "3",
volume = "53",
doi = "10.2298/JMMB170425016D",
url = "conv_810"
}
Dimitrijević, M., Urošević, D., Milić, S., Sokić, M.,& Marković, R.. (2017). Dissolution of copper from smelting slag by leaching in chloride media. in Journal of Mining and Metallurgy Section B-Metallurgy
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 53(3), 407-412.
https://doi.org/10.2298/JMMB170425016D
conv_810
Dimitrijević M, Urošević D, Milić S, Sokić M, Marković R. Dissolution of copper from smelting slag by leaching in chloride media. in Journal of Mining and Metallurgy Section B-Metallurgy. 2017;53(3):407-412.
doi:10.2298/JMMB170425016D
conv_810 .
Dimitrijević, M., Urošević, Daniela, Milić, S., Sokić, Miroslav, Marković, R., "Dissolution of copper from smelting slag by leaching in chloride media" in Journal of Mining and Metallurgy Section B-Metallurgy, 53, no. 3 (2017):407-412,
https://doi.org/10.2298/JMMB170425016D .,
conv_810 .
