anthracite duff
anthracite duff
[′an·thrə‚sīt ‚dəf] (materials)
In Wales, fine anthracite screenings used in briquets or mixed with bituminous coal to fuel cement kilns on chain grate stokers.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
A generator that was able to burn
anthracite duff [that part of anthracite that does not meet the premium market specification] and generate electricity.
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