Experimental evaluation of a mineral exposure model for crushed copper ores

Update item information
Publication Type Journal Article
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.
Other Author Garcia, D.; Lin, C. L.
Title Experimental evaluation of a mineral exposure model for crushed copper ores
Date 2006
Description Copper mineral inclusions dispersed in crushed ore particles have a certain size distribution (grain-size distribution). For efficient heap leaching processes, the crushing plant should be designed and operated to crush the ore to an appropriate particle-size distribution so that copper mineral grains are exposed and can be leached. In this regard, based on the approach of Hsih, Wen, and Kuan (1995), a mineral exposure model has been evaluated to describe the extent of grain exposure as a function of particle size. Experimental evaluation of the mineral exposure model for different copper ores has been accomplished by 3D analysis of crushed ore particles using cone beam x-ray microtomography. The model evaluation with micro-CT data suggests that the extent of preferential grain boundary breakage varies both with ore type and with particle size for a given ore type.
Type Text
Publisher Society for Mining, Metallurgy, and Exploration
First Page 261
Last Page 268
Subject Grains; Particles; Distribution
Language eng
Bibliographic Citation Garcia, D., Lin, C. L. & Miller, J. D. (2006). Experimental evaluation of a mineral exposure model for crushed copper ores in Kawatra, S. K., ed. Advances in Comminution. 261-8.
Format Medium application/pdf
Format Extent 4,411,598 bytes
Identifier ir-main,4849
ARK ark:/87278/s6tb1rhm
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 707057
Reference URL https://collections.lib.utah.edu/ark:/87278/s6tb1rhm
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