Direct and Indirect Measurements of Granule Strength

Abstract

A method for the direct measurement of compressive strength of a single granule was developed and applied to model spherical granules with different sizes and strengths. A ball mill method was also used for evaluating granule strength for practical purposes. For a series of equal sized granules prepared by the same method, the rate of size reduction by ball-milling varied linearly with the compressive strength of a single granule on log-log plots.