Selective agglomeration of a Pittsburgh Seam coal with isooctane
- USDOE Pittsburgh Energy Technology Center, PA (United States). Coal Preparation Div.
- Oak Ridge Associated Universities, Inc., TN (United States)
The Pittsburgh Energy Technology Center initiated a research program in 1989 to investigate the fundamentals of selective agglomeration as applied to the cleaning of coals. The results of the initial study with Bruceton mine, Pittsburgh seam coal, using isooctane as an agglomerant, have been published. Subsequent to the successful reduction of the ash content of Bruceton coal to less than 0.9% after two cleaning stages, the study was extended to compare a coal from the same seam, but from Ohio. In the previous parameter optimization tests with Bruceton coal, particle size and slurry pH were found to be important parameters governing coal cleanability. Other researchers have obtained similar conclusions of the effects of particle size and coal slurry pH on the cleanability of various coals. In this study, the effects of these parameters on the cleanability of Powhatan coal were examined. Particle size reduction kinetics was examined first. Effects of size reduction (degree of mineral matter liberation), oil (isooctane)-to-coal ratio, and slurry pH on mineral matter rejection and combustible recovery were also examined. A petrographic comparison was conducted on the Powhatan and Bruceton coals to examine the degree of pyrite liberation as a function of particle size to elucidate why one coal from the same seam can be cleaned significantly better than another. (VC)
- Research Organization:
- USDOE Pittsburgh Energy Technology Center, PA (United States). Coal Preparation Div.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 10110227
- Report Number(s):
- DOE/PETC/TR-92/2; CONF-901218-2; ON: DE92006410
- Resource Relation:
- Conference: Fine coal cleaning,Palm Coast, FL (United States),2-7 Dec 1990; Other Information: PBD: Jan 1992
- Country of Publication:
- United States
- Language:
- English
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