Triboelectrostatic dry coal cleaning
- Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research
Triboelectrostatic dry coal cleaning methods rely on establishing differential charge between particles to provide effective coal beneficiation. While these methods offer the advantage of ash and pyrite removal without the need for water, for them to become a viable alternative to wet coal cleaning processes, an understanding of the coal and process-related influences on particle charge formation is required. The University of Kentucky`s Center for Applied Energy Research (CAER) has been conducting basic research, sponsored by the DOE, designed to evaluate various coal properties and process parameters which affect particle charge. The charging characteristics of coals, pure minerals, and glassy carbon have been evaluated. Triboelectric charging conditions which have been found to affect particle charge formation include particle mass flowrate as well as transporting gas flowrate, composition, temperature and relative humidity. Physical conditions of the charging system, including construction materials and geometry were also found to affect particle charge. A product of this research has been the development of three novel methods for quantifying particle charge. Up-to-date results, as well as unique techniques developed to perform the research, are reported. Finally, a discussion of how these results can be used to further the development of triboelectrostatic dry coal cleaning is presented.
- DOE Contract Number:
- FG22-91PC91290
- OSTI ID:
- 43249
- Report Number(s):
- CONF-940930-; TRN: IM9521%%415
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 1; Chiang, S.H. [ed.]; PB: 828 p.
- Country of Publication:
- United States
- Language:
- English
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