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Generalized Distribution Curve for Characterizing the Performance of Coal-cleaning Equipment.
NTIS: PB 274 053 :21 pages
This Bureau of Mines report presents a method for combining the distribution curves at different specific gravities of separation, for a given piece of coal-cleaning equipment and a given raw coal feed, into a single, generalized distribution curve normalized with respect to specific gravity and, therefore, independent of the specific gravity of separation. Illustrative generalized distribution curves, based upon Bureau of Mines collected data on industrial operations, are presented for five different types of coal-cleaning equipment. The well-known concept of probable error is extended to the generalized distribution curve. It is shown that the conventional probable error is directly proportional to the specific gravity of separation. A number of sample calculations, illustrating the use of the generalized distribution curve and generalized probable error, are presented in the appendix.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 274 053
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division