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A Small-scale Test for Free-swelling Index of Coal.
NTIS: PB 201 892 :17 pages
A small-scale method was developed for determining the free-swelling index of coal samples of limited quantity, especially the macerals. Results of a series of tests using a 0.3-Gram sample correlated well with those by the standard method using a 1-gram sample. The standard and small-scale methods are modified to give unrestricted swelling for those coals having swelling index numbers above 7.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 201 892
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division