Evaluation of stucco binder for agglomeration in the heap leaching of copper ore

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Publication Type Manuscript
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.
Other Author Kodali, Phanindra; Depci, Tolga; Dhawan, Nikhil; Wang, Xuming; Lin, C.L.
Title Evaluation of stucco binder for agglomeration in the heap leaching of copper ore
Date 2011-01-01
Description It is known that the presence of excess fines in heap leaching operations may cause low recovery due to reduced heap permeability and/or channeling of lixiviant flow. These problems are mitigated to some extent by agglomeration pretreatment prior to heap leaching. Sulfuric acid leach solution is the conventional liquid bridge used for copper ore agglomeration, but these agglomerates exhibit poor stability when compared to the agglomerates formed using stucco binder, calcium sulfate hemihydrates, CaSO4.1/2 H2O. Results obtained from agglomeration experiments on the Zaldivar ore reveal that the stucco hydration reaction provides the agglomerates with more stability, increased size with less release of fines, and better permeability of the packed agglomerate bed. A phase diagram has been constructed to identify preferred agglomeration conditions. Finally a proposed description for the action of stucco binder during the agglomeration process is presented and discussed.
Type Text
Publisher Elsevier
Volume 24
Issue 8
First Page 886
Last Page 893
DOI http://dx.doi.org/doi:10.1016/j.mineng.2011.03.024
Dissertation Institution University of Utah
Language eng
Bibliographic Citation Kodali, P., Depci, T., Dhawan, N., Wang, X., Lin, C. L., & Miller, J. D. (2011). Evaluation of stucco binder for agglomeration in the heap leaching of copper ore. Minerals Engineering, 24(8), 886-93.
Rights Management (c) Elsevier ; Reprinted from Kodali, P., Depci, T., Dhawan, N., Wang, X., Lin, C. L., & Miller, J. D. (2011). Evaluation of stucco binder for agglomeration in the heap leaching of copper ore. Minerals Engineering, 24(8), 886-93.
Format Medium application/pdf
Format Extent 1,530,716 bytes
Identifier uspace,17034
ARK ark:/87278/s6vh66hx
Setname ir_uspace
Date Created 2012-07-26
Date Modified 2021-05-06
ID 707580
Reference URL https://collections.lib.utah.edu/ark:/87278/s6vh66hx
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