Author(s)

Heyong Zhao

Corresponding Author

Heyong Zhao

Abstract

Bacterial leaching technology has the advantages of low cost, low investment, simple process, low environmental pollution and suitable for the processing and utilization of low-grade ores. The research and production application of recovering copper from low-grade copper oxide ore by bacterial leaching are increasing. Bacterial leaching of fine copper concentrate can accelerate the release rate of copper, but with very fine ore powder, strong agitation and air containing carbon dioxide should be introduced during leaching. It is imperative to strengthen the research and application of bacterial copper leaching technology, economically and rationally develop and utilize copper resources, recover copper from copper ore or waste tailings as much as possible, and improve the copper self-sufficiency rate. In this paper, the influence factors and influence levels of bacterial leaching of copper oxide ore are studied experimentally, the change rule of copper leaching rate with time under the optimal leaching conditions is revealed, and the recovery test mechanism of associated copper oxide ore leached by bacteria is discussed.

Keywords

Bacteria; Leaching; Copper Oxide; Recovery