Fine coal cleaning via the micro-mag process
Abstract
A method of cleaning particulate coal which is fed with a dense medium slurry as an inlet feed to a cyclone separator. The coal particle size distribution is in the range of from about 37 microns to about 600 microns. The dense medium comprises water and ferromagnetic particles that have a relative density in the range of from about 4.0 to about 7.0. The ferromagnetic particles of the dense medium have particle sizes of less than about 15 microns and at least a majority of the particle sizes are less than about 5 microns. In the cyclone, the particulate coal and dense-medium slurry is separated into a low gravity product stream and a high gravity produce stream wherein the differential in relative density between the two streams is not greater than about 0.2. The low gravity and high gravity streams are treated to recover the ferromagnetic particles therefrom.
- Inventors:
-
- Finleyville, PA
- McMurray, PA
- Pittsburgh, PA
- Issue Date:
- Research Org.:
- USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
- OSTI Identifier:
- 867860
- Patent Number(s):
- 5022892
- Assignee:
- United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fine; coal; cleaning; via; micro-mag; process; method; particulate; fed; dense; medium; slurry; inlet; feed; cyclone; separator; particle; size; distribution; range; 37; microns; 600; comprises; water; ferromagnetic; particles; relative; density; sizes; 15; majority; dense-medium; separated; gravity; product; stream; produce; differential; streams; treated; recover; therefrom; articles therefrom; coal cleaning; coal particle; particles therefrom; cyclone separator; magnetic particles; size distribution; product stream; particle size; particulate coal; comprises water; particle sizes; medium comprises; fine coal; magnetic particle; /44/209/
Citation Formats
Klima, Mark S, Maronde, Carl P, and Killmeyer, Richard P. Fine coal cleaning via the micro-mag process. United States: N. p., 1991.
Web.
Klima, Mark S, Maronde, Carl P, & Killmeyer, Richard P. Fine coal cleaning via the micro-mag process. United States.
Klima, Mark S, Maronde, Carl P, and Killmeyer, Richard P. Tue .
"Fine coal cleaning via the micro-mag process". United States. https://www.osti.gov/servlets/purl/867860.
@article{osti_867860,
title = {Fine coal cleaning via the micro-mag process},
author = {Klima, Mark S and Maronde, Carl P and Killmeyer, Richard P},
abstractNote = {A method of cleaning particulate coal which is fed with a dense medium slurry as an inlet feed to a cyclone separator. The coal particle size distribution is in the range of from about 37 microns to about 600 microns. The dense medium comprises water and ferromagnetic particles that have a relative density in the range of from about 4.0 to about 7.0. The ferromagnetic particles of the dense medium have particle sizes of less than about 15 microns and at least a majority of the particle sizes are less than about 5 microns. In the cyclone, the particulate coal and dense-medium slurry is separated into a low gravity product stream and a high gravity produce stream wherein the differential in relative density between the two streams is not greater than about 0.2. The low gravity and high gravity streams are treated to recover the ferromagnetic particles therefrom.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}