Advances in Tank Bioleaching of Low-Grade Chalcopyrite Concentrates

Mariekie Gericke; Y. Govender; A. Pinches

doi:10.4028/www.scientific.net/AMR.71-73.361

Paper Titles

Investigation and Visualisation of Microbial Attachment Trends to Sulphide Minerals in a Bioleach Environment
p.345

Imaging of Acidithiobacillus Ferrooxidans by AFM and Analysis of AFM Curves
p.349

Effect of Sulfuric Acid Concentration on Chalcopyrite Concentrate Chemical Leaching
p.353

Studies on Thermophilic Bioleaching of Chalcopyrite toward Heap Application
p.357

Advances in Tank Bioleaching of Low-Grade Chalcopyrite Concentrates
p.361

Sulfide Mineral Induced Oxidative Stress as a Limiting Factor in Tank Bioleaching Performance
p.365

Impacts of Mineralogy on the Chemistry and Microbiology of Heap Bioleaching
p.369

Changes in an Ore Dump during a 40-Year Period of Commercial-Scale and Spontaneous Natural Bioleaching
p.373

Investigations of Attached and Unattached Cells during Bioleaching of Chalcopyrite with Acidianus Manzaensis at 65°C
p.377

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 71-73Advances in Tank Bioleaching of Low-Grade...

Advances in Tank Bioleaching of Low-Grade Chalcopyrite Concentrates

Abstract:

The focus of this paper is on the treatment of low-grade chalcopyrite-pyrite containing concentrates. The bioleaching of chalcopyrite is a major challenge due to slow copper leach kinetics and poor copper extractions. Bioleaching tests were carried out in bench-scale piloting facilities, comprising fully controlled multi-stage continuously operated reactor systems using moderate thermophile and thermophile consortia under both uncontrolled and controlled redox potential conditions. Bioleaching operating conditions and control strategies have been identified, which have the potential to significantly increase the rate of Cu leaching and to reduce process costs by allowing control of the amount of pyrite oxidised.

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Periodical:

Advanced Materials Research (Volumes 71-73)

Pages:

361-364

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.71-73.361

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Online since:

May 2009

Authors:

Mariekie Gericke, Y. Govender, A. Pinches

Keywords:

Bioleaching, Chalcopyrite, Redox Control

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