F. Carranza, N. Iglesias
The kinetics of bioleaching of sulphide concentrates by Thiobacillus ferrooxidans can be improved by performing separately the two operations related to the indirect contact mechanism, namely chemical leaching and biological oxidation of the Fe2+ produced in the chemical stage (IBES: Indirect Bioleaching with Effects Separation). This approach allows for the individual enhancement of each stage, with the chemical attack of ferric iron on sulphides conducted at higher temperatures, while the biological oxidation stage is more effective when applying biofilm models. Moreover, this process reduces inhibitory phenomena caused by bacterial damage due to solid particle abrasion. The 1BES process has been tested on a Spanish copper-zinc and copper sulphide concentrate with the goal of selectively dissolving zinc for recovery via solvent extraction, leaving behind a copper concentrate suitable for pyrometallurgical treatment. Key attributes of this process, including moderate temperature, atmospheric pressure, cost-effectiveness of the leaching agent, and operational flexibility, make it economically attractive. A semi-industrial pilot plant is currently being established to validate these findings.
@article{5a055412-32c6-4215-8ec3-870e09a37fd8,
title={Kinetics improvement of high-grade bioleaching by effects separation sulphides},
author={F. Carranza and N. Iglesias},
year={1993},
language={es}
}TY - JOUR TI - Kinetics improvement of high-grade bioleaching by effects separation sulphides AU - F. Carranza AU - N. Iglesias PY - 1993 LA - es 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
Kafumbila Kasonta Joseph
This publication presents the latest adjustments to equilibrium conditions during the solvent extraction of metals using Cyanex 272 and D2EHPA as extr
Elena Bruce, Rossana Sepúlveda
Mathematical modeling of columnar leaching is a useful tool for predicting and evaluating the kinetics of copper extraction. One commonly used model f
Chengbing Chang, Jianying Guo
Microbial methods offer environmentally friendly, low-energy strategies for enhanced mineral CO2 sequestration. Most studies focus on mineral leaching