Dissolved mineral species precipitation during coal flotation
- Columbia Univ., New York, NY (United States). Henry Krumb School of Mines
- National Inst. of Standards and Technology, Gaithersburg, MD (United States)
Beneficiation by froth flotation, which exploits the difference in surface properties of minerals, has been a promising method for coal cleaning.However, dissolved mineral species present in coal flotation systems can interact with particles and other species leading to drastic effects on flotation. Particularly, precipitation or adsorption of such species on the particles can alter their surface properties and thus influence the efficiency of coal cleaning. In this work, the bulk and surface precipitation of the dissolved mineral species present in Pittsburgh No. 8 coal was investigated under controlled experimental conditions. Changes in the surface properties of coal due to the precipitation were monitored by following zeta potential. Solution potential data were used to elucidate the mechanism of the precipitation. The effect of the precipitation of the dissolved species on the floatability of coal was found to be marked.
- OSTI ID:
- 276661
- Report Number(s):
- CONF-9510120-; ISBN 0-87335-141-X; TRN: IM9636%%372
- Resource Relation:
- Conference: 19. international mineral processing congress, San Francisco, CA (United States), 22-27 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 19. international mineral processing congress: Flotation operating practices and fundamentals. Volume 3; PB: 332 p.
- Country of Publication:
- United States
- Language:
- English
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