Effect of Bio-Leaching Process on the Pore Structure of Packed Particle Bed via 3D Imaging and Analysis

Ai Xiang Wu; Bao Hua Yang; Jin Zhi Liu; Xiu Xiu Miao

doi:10.4028/www.scientific.net/AMR.825.344

Paper Titles

Differences of Bioleaching of Pyrites from Different Geo-Genetic Deposits by Leptospirillum ferriphilum
p.326

Dynamic Evolution of the Microbial Community in BIOX Leaching Tanks
p.331

Effect of Bioleaching Microorganisms and Solid Ore Particles on Formation of Interfacial Crud in Solvent Extraction Plants
p.335

Effect of Contact with Organic Extractant LIX 84IC during Solvent Extraction Process on the Re-Establishment of Growth of Bioleaching Microorganisms
p.340

Effect of Bio-Leaching Process on the Pore Structure of Packed Particle Bed via 3D Imaging and Analysis
p.344

Effect of Increased Acid Concentration on the Microbial Population Inhabiting an Industrial Heap Bioleaching Plant
p.348

Effect of Temperature on Column Bioleaching of a Refractory Gold Ore
p.352

Effects of Several Parameters on Nickel Extraction from Laterite Ore by Direct Bioelaching Using Aspergillus niger and Acid Rock Drainage from Coal Mine as an Organic Substrate
p.356

Electrochemical Behavior of Carbon Paste Electrode with Gold-Bearing Pyrite in Bioleaching
p.360

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 825Effect of Bio-Leaching Process on the Pore...

Effect of Bio-Leaching Process on the Pore Structure of Packed Particle Bed via 3D Imaging and Analysis

Abstract:

Heap bio-leaching technology is extensively applied to recover metals from low-grade complex ores in the mining industry, particularly the copper sulfide ores. Understanding the effect of bio-leaching process on the pore structure of packed particle beds is important to enhance the percolation and leaching performances with respect to design and operation of heap leaching system. The porosity, pore size distribution and degree of pore connectivity are the three most important features correlated with fluid flow in heap leaching operation. In this study, a spiral X-ray CT scanner, combined with 3D imaging and analysis, was used to characterize the complex pore structure of the packed ore particle beds before and after bioleaching copper sulfide ores. The results indicate that the pore structure has temporal and spatial variations during bio-leaching process.

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Periodical:

Advanced Materials Research (Volume 825)

Pages:

344-347

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.825.344

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Online since:

October 2013

Authors:

Ai Xiang Wu, Bao Hua Yang, Jin Zhi Liu, Xiu Xiu Miao

Keywords:

Bio-Leaching, Packed Particle Bed, Pore Structure, Tridimensional (3D) Imaging

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