Bioleaching and dissolution kinetics of pyrite, chalcocite and covellite

Autor:	Biao Wu, He Shang, Jian-kang Wen, Gao Wencheng
Rok vydání:	2021
Předmět:	Mineral Chalcocite Inorganic chemistry Metals and Alloys General Engineering chemistry.chemical_element Covellite engineering.material Copper chemistry Bioleaching visual_art visual_art.visual_art_medium engineering Pyrite Leaching (metallurgy) Dissolution
Zdroj:	Journal of Central South University. 28:2037-2051
ISSN:	2227-5223 2095-2899
DOI:	10.1007/s11771-021-4751-5
Popis:	In this work, the bioleaching process of pyrite, chalcocite and covellite which were the main phase compositions for Zijin copper mineral was comprehensively studied. The influence parameters, such as leaching temperature, Fe3+ concentration, pH of solution and bacteria concentration were investigated. The leaching kinetics of the pyrite, chalcocite and covellite under the studied conditions was successfully modeled by an empirical diffusion-like equation, respectively. The apparent activity energy of pyrite leaching, chalcocite leaching (stage II) and covellite leaching was calculated to be 69.29, 65.02 and 84.97 kJ/mol, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ace8b6b238ad59a1b2ec218bf06e2e85 https://doi.org/10.1007/s11771-021-4751-5 Zobrazit plný text záznamu Full text from SpringerLink