Ultrasonic ash/pyrite liberation. Final technical report
The objective of this project was to develop a coal preparation concept which employed ultrasonics to precondition coal prior to conventional or advanced physical beneficiation processes such that ash and pyrite separation were enhanced with improved combustible recovery. Research activities involved a series of experiments that subjected three different test coals, Illinois No. 6, Pittsburgh No. 8, and Upper Freeport, ground to three different size fractions (28 mesh {times} 0, 200 mesh {times} 0, and 325 mesh {times} 0), to a fixed (20 kHz) frequency ultrasonic signal prior to processing by conventional and microbubble flotation. The samples were also processed by conventional and microbubble flotation without ultrasonic pretreatment to establish baseline conditions. Product ash, sulfur and combustible recovery data were determined for both beneficiation processes.
- Research Organization:
- CoaLiquid, Inc., Louisville, KY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-87PC79890
- OSTI ID:
- 10146906
- Report Number(s):
- DOE/PC/79890-T1; ON: DE93013529
- Resource Relation:
- Other Information: PBD: Jun 1990
- Country of Publication:
- United States
- Language:
- English
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