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Status : Withdrawn
Standard Type : Main
Document Year : 1994
Pages : 9
Edition : 1
Section Volume : Coal preparation: Terminology and performance (ISO/TC 27/SC 1.)
The principle of the method specified is degrading a test portion of shale in the size range 5,6 mm to 2,8 mm, by controlled agitation in water, determining the proportion of degraded material passing through a 500 µm sieve, and determining the proportion of degraded material of nominal top size less than 10 µm by sedimentation.