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Dedusting of fine coal

โœ Scribed by Robert Howie; Peter A. Toynbee

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
298 KB
Volume
67
Category
Article
ISSN
0016-2361

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โœฆ Synopsis

Removal of surface moisture, and subsequent removal of dust (-0.5 or -1.0 mm) in an air classifier, can convert unsaleable subbituminous coal fines into an industrial fuel acceptable in certain firing systems. An air classifier in a zigzag configuration, where the coal fines fall against a rising air stream, has a considerably greater efficiency with such small particles than has a classifier consisting simply of a vertical tube.

Preliminary tests with such a zigzag classifier are described, the results of which have been applied to the design of commercial equipment. Tests in commercial operation have demonstrated that this equipment will remove dust effkiently so long as the feed material is surface dry.

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