Paper Title:
Bioleaching of a Mixed Copper Dust Emanating from Copper Smelters
  Abstract

Bioleaching of the copper flue dust emanating from smelters at Sarcheshmeh Copper Complex has been studied. At the present, the dust is sent back to the smelter, which reduces its efficiency. In this study, a continuous system including a feed tank and two-stage aerated stirred tank bioreactors was established. Mixed mesophile bacteria with different amounts of the dust containing 35% of copper mainly in the form of sulfide minerals were used. The effects of pulp densities, residence times and temperatures on the final copper recovery and redox potential were experienced. Despite the copper concentrates bioleaching, the process of dust bio-treating was net acid consuming. Lower pulp densities resulted in a stable redox potential in both reactors. However, increasing the pulp density to 7%, was created an unstable redox potential in the first bioreactor especially at lower temperatures. Final copper recoveries were calculated for pulp densities of 2%, 4% and 7%, were 91.8%, 90.3% and 87.6% with residence times of 2.7, 4 and 6 days respectively. The promising results indicated that bioleaching is a feasible process that can be applied to copper flue dusts.

  Info
Periodical
Advanced Materials Research (Volumes 20-21)
Edited by
Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher
Pages
143-148
DOI
10.4028/www.scientific.net/AMR.20-21.143
Citation
F. Bakhtiari, H. Atashi, M. Zivdar, S.A. Seied Baghery, "Bioleaching of a Mixed Copper Dust Emanating from Copper Smelters", Advanced Materials Research, Vols. 20-21, pp. 143-148, 2007
Online since
July 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Mariekie Gericke, Heinrich H. Muller, P.J. van Staden, A. Pinches
Abstract:The focus of this paper is on the development of a bioleaching process for the treatment of complex polymetallic concentrates, containing...
58
Authors: Mariekie Gericke, Y. Govender, A. Pinches
Abstract:The focus of this paper is on the treatment of low-grade chalcopyrite-pyrite containing concentrates. The bioleaching of chalcopyrite is a...
361
Authors: Alexa Muñoz, Denise Bevilaqua, Oswaldo Garcia Jr.
Abstract:The objective of this work is to evaluate the acidic and biological leaching of tailings containing Ni/Cu from a flotation and smelting...
425
Authors: Sabrina Hedrich, Sören Bellenberg, René Kermer, Tilman Gehrke, Wolfgang Sand, Axel Schippers, Susan Reichel, Franz Glombitza, Eberhard Janneck
Chapter 5: Bioremediation and Bio Recovery of Metals from Wastes, Impact of Mining Technologies on the Environment
Abstract:Ashes from lignite combustion for power generation contain considerable amounts of strategic metals, metalloids and rare earth elements....
664
Authors: Li Kai, Yu Guang Wang, Li Juan Zhang, Chen Zhu, Mao Feng, Hong Bo Zhou
Chapter 3: Technologies of Bioleaching in Hydrometallurgy
Abstract:This study aimed to investigate the effect of ore particle size on the bioleaching of Yulong copper ore in the bench-scale columns using the...
375