Zobrazeno 1 - 10
of 54
pro vyhledávání: '"J.E. Gebhardt"'
Publikováno v:
Minerals Engineering. 90:77-88
Heap leaching involves the application of a leach solution onto stacked low grade ores. Solution percolates through the ore, dissolving metals from various minerals, and is recovered at the base. This process is conceptually a simple one, but quickly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7afb0da9f453e689fa4fcb4eba61d68
https://doi.org/10.1016/j.mineng.2015.11.005
https://doi.org/10.1016/j.mineng.2015.11.005
Heap leach stockpiles inevitably contain local voidage heterogeneities due to non-uniform particle size distributions of the ore and other factors that lead to preferential flow paths and solution channelling. The stockpile can also encounter diverse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93263ba701815f1e33625c19c88fc5b4
https://cronfa.swan.ac.uk/Record/cronfa34273/Download/0034273-13062017151749.pdf
https://cronfa.swan.ac.uk/Record/cronfa34273/Download/0034273-13062017151749.pdf
Publikováno v:
Minerals Engineering. 63:57-64
A comprehensive heap leach model, developed within a computational fluid dynamics software framework, provides a modeling tool to capture reactive dissolution in low grade ores of oxide and sulfide minerals. These systems involve suites of very compl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c6ff24f5c990707798ce2a4cba93b5e
https://doi.org/10.1016/j.mineng.2013.11.010
https://doi.org/10.1016/j.mineng.2013.11.010
Publikováno v:
Hydrometallurgy. :150-161
This paper covers the basic formulation of a comprehensive copper heap leach model based on computational fluid dynamics (CFD) technology together with its parameterization and validation against laboratory column test data. For the column test data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edb1150e27938c3fae404183ddf0ca96
https://doi.org/10.1016/j.hydromet.2012.08.004
https://doi.org/10.1016/j.hydromet.2012.08.004
Publikováno v:
Minerals Engineering. 33:72-79
Industrial mining through the process of heap leaching of low grade ores can be employed in the extraction of a range of base and precious metals, such as copper, gold, silver, nickel, zinc and uranium. The process involves the percolation of a leach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d579db3bb10621ad0a9aa247ad1c92d6
https://doi.org/10.1016/j.mineng.2011.10.003
https://doi.org/10.1016/j.mineng.2011.10.003
Publikováno v:
Hydrometallurgy. :98-108
A comprehensive mathematical model of the heap leaching of oxide ores with application to gold–silver–copper complexes and its numerical solution strategy is presented. The model is multi-scale, capturing details of the reactions at a particle (m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d4f499e3f65ef30b77252677387006c
https://doi.org/10.1016/j.hydromet.2011.12.003
https://doi.org/10.1016/j.hydromet.2011.12.003
Publikováno v:
ECS Transactions. 28:179-189
A multi-physics software framework has been used to develop a comprehensive heap leach model that allows the user to simulate reactive dissolution and flow through the stockpile. Based on the fundamental physics and chemistry, including reaction kine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db9fc71440bbacf6bda99c12b15e270f
https://doi.org/10.1149/1.3367912
https://doi.org/10.1149/1.3367912
Publikováno v:
International Journal for Numerical Methods in Fluids. 50:1085-1117
A computational procedure is presented for solving complex variably saturated flows in porous media, that may easily be implemented into existing conventional finite-volume-based computational fluid dynamics codes, so that their functionality might b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7742469a0c65551242c02b201f50801
https://doi.org/10.1002/fld.1087
https://doi.org/10.1002/fld.1087
In analysing the treatment and transport of slurries (i.e. particle loaded fluids) in minerals processing, it is common to come up against significant challenges from the perspective of the computational fluid dynamics (CFD) modelling, especially in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2538d5f3033b31cf41d3d32b583b321c
https://cronfa.swan.ac.uk/Record/cronfa5795
https://cronfa.swan.ac.uk/Record/cronfa5795
Autor:
J.E. Gebhardt, J.H. Ahn
Publikováno v:
International Journal of Mineral Processing. 33:243-262
US Bureau of Mines research to understand the surface chemical mechanisms of flotation showed that galvanic interactions between grinding media and chalcopyrite influence the self-induced floatability of chalcopyrite in simulated process water. Galva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1372161a896b2b97230124451a7b1b31
https://doi.org/10.1016/0301-7516(91)90056-o
https://doi.org/10.1016/0301-7516(91)90056-o