Effect of Particle Size on the Column Bioleaching of Tibet Yulong Copper Ore

Li Kai; Yu Guang Wang; Li Juan Zhang; Chen Zhu; Mao Feng; Hong Bo Zhou

doi:10.4028/www.scientific.net/AMR.1130.375

Paper Titles

Bioprocess for Leaching of Copper Concentrate
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Bioleaching of Orpiment (As₂S₃) in Absence of Fe³⁺
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Insights into the Active Carbon Fixation Pathways of a Microbial Community in a Chalcopyrite Bioleaching Column
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Study on Bioleaching of Sulfur in Iron Ore by Mixed Culture
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Effect of Particle Size on the Column Bioleaching of Tibet Yulong Copper Ore
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Study on the Gold Recovery of Double Refractory Gold Ore Concentrate by Biological Oxidation Pretreatment
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Spectroscopic and Microscopic Investigation for Biohydrometallurgy
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Influence of Biological and Environmental Factors on Leaching Efficiency during Chalcopyrite Bioleaching Process
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Indium Extraction from Reiche Zeche Sphalerite and Community Analysis of Acidic Mine Water
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1130Effect of Particle Size on the Column Bioleaching...

Effect of Particle Size on the Column Bioleaching of Tibet Yulong Copper Ore

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 mixed culture of moderately thermophilic microorganisms. Bioleaching experiments were carried out on particle sizes of 5-10, 10-15 and 15-25mm in the same kind of column reactors. In the control test of acid leaching, the column reactor was charged with the middle particle size (10-15mm). The results indicated that copper extraction in the column reactor with particle size of 5-10 mm was highest among the three particle sizes. After 110-days leaching, 89% of copper was leached at 5-10 mm particle size while 57% was extracted at 15-25 mm particle size and 80% at 10-15 mm. Under the same particle size (10-15 mm), copper recovery in the column reactor with inoculation of microorganisms was 25% higher in comparison to the control test of acid leaching, while sulfuric acid consumption was 33% less than that.

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Periodical:

Advanced Materials Research (Volume 1130)

Pages:

375-378

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1130.375

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Online since:

November 2015

Authors:

Li Kai, Yu Guang Wang, Li Juan Zhang, Chen Zhu, Mao Feng, Hong Bo Zhou*

Keywords:

Bioleaching, Column Reactor, Moderately Thermophilic Microorganisms, Particle Size

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