Standard Method Of Test For Grindability Of Coal By The
A procedure is described for sampling coal, grinding in a hardgrove grinding machine, and passing through standard sieves to determine the degree of pulverization of coals. the grindability index of the coal tested is calculated from a calibration chart prepared by plotting weight of material passing a no. 200 sieve versus the hardgrove.Apr 09, mill fineness test of coal mill in thermal power plant. coal mill pulverizer in thermal power plants. 17/11/ specifically, fineness is a measurement of the percentage of a coal sample that passes through a set of test sieves usually designated at 50, 100, and 200 mesh a 70% coal sample passing through a 200 mesh screen indicates optimum mill.