NDLI: Characterization of solute transport parameters in leach ore: inverse modeling based on column experiments

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Characterization of solute transport parameters in leach ore: inverse modeling based on column experiments

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Frontiers of Earth Science in China : Volume 3, Issue 1, March 2009

Frontiers of Earth Science in China : Volume 2

Frontiers of Earth Science in China : Volume 1

Characterization of solute transport parameters in leach ore: inverse modeling based on column experiments

Content Provider	Springer Nature Link
Author	Peng, Sheng
Copyright Year	2008
Abstract	Heap leaching is essentially a process in which metals are extracted from mine ores with lixiant. For a better understanding and modeling of this process, solute transport parameters are required to characterize the solute transport system of the leach heap. For porous media like leach ores, which contain substantial gravelly particles and have a broad range of particle size distributions, traditional small-scale laboratory experimental apparatus is not appropriate. In this paper, a 2.44 m long, 0.3 m inner diameter column was used for tracer test with boron as the tracer. Tracer tests were conducted for 2 bulk densities (1.92 and 1.62 g/cm$^{3}$) and 2 irrigation rates (2 and 5 L/ (m$^{2}$·h$^{−1}$)). Inverse modeling with two-region transport model using computer code CXTFIT was conducted based on the measured breakthrough curves to estimate the transport parameters. Fitting was focused on three parameters: dispersion coefficient D, partition coefficient β, and mass transfer coefficient ω. The results turned out to fall within reasonable ranges. Sensitivity analysis was conducted for the three parameters and showed that the order of sensitivity is β > ω > D. In addition, scaling of these parameters was discussed and applied to a real scale heap leach to predict the tracer breakthrough.
Starting Page	208
Ending Page	213
Page Count	6
File Format	PDF
ISSN	16737385
Journal	Frontiers of Earth Science in China
Volume Number	3
Issue Number	2
e-ISSN	16737490
Language	English
Publisher	SP Higher Education Press
Publisher Date	2009-01-09
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	leach ore tracer test inverse modeling parameter up-scaling Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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