Bao-qiang Yu, Jue Kou, Chun-bao Sun, and Yi Xing, Extraction of copper from copper bearing biotite by ultrasonic-assisted leaching, Int. J. Miner. Metall. Mater.,(2020). https://doi.org/10.1007/s12613-020-2132-y
Cite this article as:
Bao-qiang Yu, Jue Kou, Chun-bao Sun, and Yi Xing, Extraction of copper from copper bearing biotite by ultrasonic-assisted leaching, Int. J. Miner. Metall. Mater.,(2020). https://doi.org/10.1007/s12613-020-2132-y
Research Article

Extraction of copper from copper bearing biotite by ultrasonic-assisted leaching

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  • Received: 16 March 2020Revised: 1 July 2020Accepted: 2 July 2020Available online: 5 July 2020
  • Copper bearing biotite is a typical refractory copper mineral on the surface of Zambian copper belt. Aiming to treat this kind of copper oxide ore with a more effective method, ultrasonic-assisted acid leaching was conducted in this paper. Compared with regular acid leaching, ultrasound could reduce leaching time from 120 min to 40 min, and sulfuric acid concentration could be reduced from 0.5 mol•L-1 to 0.3 mol•L-1. Besides, leaching temperature could be reduced from 75℃ to 45℃ at same copper leaching rate of 78%. Mechanism analysis indicates that ultrasonic wave can cause delamination of copper bearing biotite and increase the specific surface area from 0.55 m2•g-1 to 1.67 m2•g-1. The results indicate that copper extraction from copper bearing biotite by ultrasonic-assisted acid leaching is more effective than regular acid leaching. This study proposes a promising method for recycling valuable metals from phyllosilicate minerals.
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