Understanding the mechanism of microcrack-enhanced bioleaching of copper

Understanding the mechanism of microcrack-enhanced bioleaching of copper

Investigations on the microcrack distribution characteristics and bioleaching behaviors of particles were conducted to obtain better bioleaching efficiency and deepen the mechanism understanding. Results indicate that comminution by high-pressure grinding roll (HPGR) is the desirable method for obta...

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Veröffentlicht in:Hydrometallurgy 2023-04, Vol.218, p.106045, Article 106045
Hauptverfasser: Zhong, Wen, Zhong, Shuiping, Tang, Ding, Chi, Xiaopeng, Weng, Wei
Format: Artikel
Sprache:eng
Schlagworte:
Bioleaching
Copper extraction
Copper sulfide ore
Hydrometallurgy
Microcracks
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Zusammenfassung:Investigations on the microcrack distribution characteristics and bioleaching behaviors of particles were conducted to obtain better bioleaching efficiency and deepen the mechanism understanding. Results indicate that comminution by high-pressure grinding roll (HPGR) is the desirable method for obtaining particles with more abundant and wider microcracks. Fixing the HPGR pressure at 4 MPa results in the highest bioleaching efficiency for copper extraction, namely 86% for the shaking flask bioleaching (particle size:
ISSN:0304-386X
1879-1158
DOI:10.1016/j.hydromet.2023.106045