Fine coal washability-liberation analysis by cone-beam X-ray microtomography
- Univ. of Utah, Salt Lake City, UT (United States). Dept. of Metallurgical Engineering
A new method based on cone-beam X-ray microtomography is described for direct determination of the three-dimensional liberation spectrum of multiphase particles 100 microns in size or less. Such a technique may provide the basis for more detailed and accurate washability analysis in fine coal characterization. Previous research has demonstrated the ability to use traditional medical X-ray CT scanners to determine the liberation spectrum of coarse coal particles of 1 cm in size (washability analysis). Now it is possible to determine fine coal ({minus}100 mesh) washability by cone-beam microtomography. Rather than stacking a series of two-dimensional slices for volumetric imaging as is commonly done in traditional medical computed tomography, with this new microtomographic technique a three-dimensional reconstruction image array is prepared directly from the two-dimensional projections for cone beam geometry. The advantage of high spatial resolution (approximately 15 {micro}m) with a microfocus X-ray generator combined with the benefit of direct processing of three-dimensional data, provide an excellent opportunity to overcome many of the limitations of current techniques being used for fine coal washability analysis.
- OSTI ID:
- 549499
- Report Number(s):
- CONF-960954-; TRN: IM9751%%182
- Resource Relation:
- Conference: 13. annual international Pittsburgh coal conference, Pittsburgh, PA (United States), 3-7 Sep 1996; Other Information: PBD: 1996; Related Information: Is Part Of Thirteenth annual international Pittsburgh coal conference: Proceedings. Volume 2; Chiang, S.H. [ed.]; PB: 819 p.
- Country of Publication:
- United States
- Language:
- English
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