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Heap Leaching: Modelling and Forecasting Using CFD Technology

Diane McBride Orcid Logo, James Gebhardt, Nick Croft Orcid Logo, Mark Cross

Minerals, Volume: 8, Issue: 1, Start page: 9

Swansea University Authors: Diane McBride Orcid Logo, Nick Croft Orcid Logo, Mark Cross

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DOI (Published version): 10.3390/min8010009

Abstract

Heap leach operations typically employ some form of modelling and forecasting tools to predict cash flow margins and project viability. However, these vary from simple spreadsheets to phenomenological models, with more complex models not commonly employed as they require the greatest amount of time...

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Published in: Minerals
ISSN: 2075-163X
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa38015
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first_indexed 2018-01-11T20:06:12Z
last_indexed 2018-03-13T20:21:00Z
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spelling 2018-03-13T16:34:31.9526806 v2 38015 2018-01-11 Heap Leaching: Modelling and Forecasting Using CFD Technology f045e194e1b759f3aac9e15caf8f293e 0000-0002-9736-4534 Diane McBride Diane McBride true false 8f82cd0b51f4b95b0dd6fa89427d9fc7 0000-0002-1521-5261 Nick Croft Nick Croft true false 05c424e8f40820a4174cda24ec338f42 Mark Cross Mark Cross true false 2018-01-11 EEN Heap leach operations typically employ some form of modelling and forecasting tools to predict cash flow margins and project viability. However, these vary from simple spreadsheets to phenomenological models, with more complex models not commonly employed as they require the greatest amount of time and effort. Yet, accurate production modelling and forecasting are essential for managing production and potentially critical for successful operation of a complex heap, time and effort spent in setting up modelling tools initially may increase profitability in the long term. A brief overview of various modelling approaches is presented, but this paper focuses on the capabilities of a computational fluid dynamics (CFD) model. Advances in computational capability allow for complex CFD models, coupled with leach kinetic models, to be applied to complex ore bodies. In this paper a comprehensive hydrodynamic CFD model is described and applied to chalcopyrite dissolution under heap operating conditions. The model is parameterized against experimental data and validated against a range of experimental leach tests under different thermal conditions. A three-dimensional ‘virtual’ heap, under fluctuating meteorological conditions, is simulated. Continuous and intermittent irrigation is investigated, showing copper recovery per unit volume of applied leach solution to be slightly increased for pulse irrigation. Journal Article Minerals 8 1 9 2075-163X CFD; heap leaching; computational modelling; copper sulphide ore 3 1 2018 2018-01-03 10.3390/min8010009 http://www.mdpi.com/2075-163X/8/1/9 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2018-03-13T16:34:31.9526806 2018-01-11T14:12:34.2969643 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Diane McBride 0000-0002-9736-4534 1 James Gebhardt 2 Nick Croft 0000-0002-1521-5261 3 Mark Cross 4 0038015-01022018093434.pdf mcbride2018.pdf 2018-02-01T09:34:34.4330000 Output 6254560 application/pdf Version of Record true 2018-02-01T00:00:00.0000000 true eng
title Heap Leaching: Modelling and Forecasting Using CFD Technology
spellingShingle Heap Leaching: Modelling and Forecasting Using CFD Technology
Diane McBride
Nick Croft
Mark Cross
title_short Heap Leaching: Modelling and Forecasting Using CFD Technology
title_full Heap Leaching: Modelling and Forecasting Using CFD Technology
title_fullStr Heap Leaching: Modelling and Forecasting Using CFD Technology
title_full_unstemmed Heap Leaching: Modelling and Forecasting Using CFD Technology
title_sort Heap Leaching: Modelling and Forecasting Using CFD Technology
author_id_str_mv f045e194e1b759f3aac9e15caf8f293e
8f82cd0b51f4b95b0dd6fa89427d9fc7
05c424e8f40820a4174cda24ec338f42
author_id_fullname_str_mv f045e194e1b759f3aac9e15caf8f293e_***_Diane McBride
8f82cd0b51f4b95b0dd6fa89427d9fc7_***_Nick Croft
05c424e8f40820a4174cda24ec338f42_***_Mark Cross
author Diane McBride
Nick Croft
Mark Cross
author2 Diane McBride
James Gebhardt
Nick Croft
Mark Cross
format Journal article
container_title Minerals
container_volume 8
container_issue 1
container_start_page 9
publishDate 2018
institution Swansea University
issn 2075-163X
doi_str_mv 10.3390/min8010009
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
url http://www.mdpi.com/2075-163X/8/1/9
document_store_str 1
active_str 0
description Heap leach operations typically employ some form of modelling and forecasting tools to predict cash flow margins and project viability. However, these vary from simple spreadsheets to phenomenological models, with more complex models not commonly employed as they require the greatest amount of time and effort. Yet, accurate production modelling and forecasting are essential for managing production and potentially critical for successful operation of a complex heap, time and effort spent in setting up modelling tools initially may increase profitability in the long term. A brief overview of various modelling approaches is presented, but this paper focuses on the capabilities of a computational fluid dynamics (CFD) model. Advances in computational capability allow for complex CFD models, coupled with leach kinetic models, to be applied to complex ore bodies. In this paper a comprehensive hydrodynamic CFD model is described and applied to chalcopyrite dissolution under heap operating conditions. The model is parameterized against experimental data and validated against a range of experimental leach tests under different thermal conditions. A three-dimensional ‘virtual’ heap, under fluctuating meteorological conditions, is simulated. Continuous and intermittent irrigation is investigated, showing copper recovery per unit volume of applied leach solution to be slightly increased for pulse irrigation.
published_date 2018-01-03T03:48:00Z
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score 11.013731

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