Direct three-dimensional liberation analysis by cone beam x-ray microtomography

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Publication Type Book Chapter
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.
Other Author Lin, C. L.
Title Direct three-dimensional liberation analysis by cone beam x-ray microtomography
Date 1997
Description Liberation of valuable minerals during size reduction is an important aspect of mineral processing technology. In practice, most quantitative information on liberation is based on the application of stereological theorems for the analysis of image data from two-dimensional polished sections. On this basis an estimate of the volumetric grade distribution is made. Recently, a new method based on cone-beam xray microtomography has been used for direct determination of the three-dimensional liberation spectrum of multiphase particles 100 microns in size or less. Preliminary results for a packed bed of particles indicate that high spatial resolution (approximately 15 microns) and the direct processing of raw volumetric data are two important benefits offered by this new method. Three dimensional liberation analysis by microtomography provides an excellent opportunity to overcome many of the limitations of currently used polished section techniques. For example, detailed textural information is provided. Of course microtomography provides an independent method to verify current procedures used for analysis and transformation of polished section data into an estimate of the volumetric grade distribution. More important, however, is the possibility that this method could be developed as a routine procedure for liberation analysis in the 21st century.
Type Text
Publisher Society for Mining, Metallurgy, and Exploration
First Page 85
Last Page 91
Subject Mineral processing; Cone beam x-ray; Microtomography
Subject LCSH Tomography; X-rays; Ore-dressing
Language eng
Bibliographic Citation Lin, C. L. & Miller, J. D. (1997). Direct three-dimensional liberation analysis by cone beam x-ray microtomography, in Kawatra, S. K., ed. Comminution Practices, 85-91.
Format Medium application/pdf
Format Extent 3,124,861 Bytes
Identifier ir-main,4433
ARK ark:/87278/s64f2809
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 703839
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