VLADIMIR B. CVETKOVSKI, VESNA T. CONIĆ
This study investigates the precipitation of copper from an acid solution using sodium sulphide as a precipitation agent. The solution contained 17 g/l copper and 350 g/l sulfuric acid. Optical microscopy revealed a particle size of nearly 1 µm in the sulphide sludge sample, while chemical and X-ray diffraction analyses indicated covellite as the main sulphide mineral. A batch bioleach amenability test was conducted at 32 °C utilizing a mesophilic mixed culture from the Tk31 mine, with a residence time of 28 days. Results demonstrated promising dissolution of copper sulphide through direct catalytic leaching facilitated by bacteria. To enhance bacterial activity and the redox potential of the culture, small quantities of ferrous ions were added. The bioleach test lasted 22 days, resulting in a copper extraction rate of 95 %, complemented by a copper concentration of 15 g/l in the bioleach solution. The slope of the extraction curve indicated a solubilisation rate of 1.1 g/l per day. Overall, the findings suggest that a 95 % copper extraction could potentially be achieved within 13.6 days, presuming the use of a three-stage bioreactor system.
@article{27fce6f7-065c-42bb-8763-1b5ddd883f31,
title={Mesophilic leaching of copper sulphide sludge},
author={VLADIMIR B. CVETKOVSKI and VESNA T. CONIĆ},
year={2009},
language={en}
}TY - JOUR TI - Mesophilic leaching of copper sulphide sludge AU - VLADIMIR B. CVETKOVSKI AU - VESNA T. CONIĆ PY - 2009 LA - en ER -
Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d
Mark E. Schlesinger, Matthew J. King
This book presents a comprehensive overview of the principles and practices of copper extraction metallurgy. The objective is to provide both a theore
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f
Sadia Ilyas, Jae-chun Lee
The feasibility of biometallurgical processing for recovering heavy metals, precious metals, and rare earth elements from waste electrical and electro
The Australasian Institute of Mining and Metallurgy
This conference, held in Perth, Western Australia, focuses on the latest advancements in metallurgical processing plant design and operational strateg
David Pollard, Geoff Dunlop
The MetPlant 2008 conference focused on advancements in metallurgical processing of ores, emphasizing plant design, operation strategies, and innovati