Kinetics of Nitric Acid Leaching of Bornite and Chalcopyrite
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Kinetics of Nitric Acid Leaching of Bornite and Chalcopyrite
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| Автор |
Shklyaev, Yu. V.
Dizer, O. A. Lugovitskaya, T. N. Golovkin, D. I. Rogozhnikov, D. A. |
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| Тематика |
COPPER
CHALCOPYRITE BORNITE LEACHING NITRIC ACID KINETICS |
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| Описание |
The influence of temperature, nitric acid concentration, and particle size on the process of nitric acid dissolution of chalcopyrite and bornite was studied.
Using the shrinking core model, the values of the apparent activation energy and the orders with respect to particle size and nitric acid concentration were calculated. It was suggested that the process of mineral dissolution is limited by internal diffusion. Received: 05.10.23. Revised: 08.11.23. Accepted: 08.11.23. Available online: 16.11.23. The paper presents a study of the process of nitric acid dissolution of the natural minerals chalcopyrite and bornite. The influence of various parameters, including temperature, nitric acid concentration and particle sizes, on this process was examined. Based on the data obtained, the values of apparent activation energy (57.41 and 42.98 kJ/mol for chalcopyrite and bornite, respectively), empirical orders with respect to nitric acid (1.62 and 1.57 for chalcopyrite and bornite, respectively) and with respect to particle size (–1.16 and –2.53 for chalcopyrite and bornite, respectively) were calculated using the shrinking core model. Generalized kinetic equations for the dissolution process of both minerals were derived. Based on the calculations performed, it was suggested that the dissolution processes of chalcopyrite and bornite under these conditions are limited by internal diffusion. This work was funded by the Russian Science Foundation Project No. 22-79-10290. Analytical studies were carried out with the financial support of the State Task of the Rus-sian Federation under Grant No. 075-03-2021-051/5 (FEUZ-2021-0017). |
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| Дата |
2024-01-18T12:45:22Z
2024-01-18T12:45:22Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Kinetics of Nitric Acid Leaching of Bornite and Chalcopyrite / Yu. V. Shklyaev, O. A. Dizer, T. N. Lugovitskaya, D. I. Golovkin, D. A. Rogozhnikov // Chimica Techno Acta. — 2023. — Vol. 10, No. 4. — № 202310410.
2411-1414 http://elar.urfu.ru/handle/10995/129328 https://www.elibrary.ru/item.asp?id=60040551 10.15826/chimtech.2023.10.4.10 |
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| Язык |
en
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| Связанные ресурсы |
Chimica Techno Acta. 2023. Vol. 10. № 4
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| Формат |
application/pdf
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| Издатель |
Уральский федеральный университет
Ural Federal University |
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