Micromeritical Study on Carbons (3)

This paper is the fundamental report for the shape factor of particles of carbons .The shape factor was estimated by the specific surface, obtained through the air permeability method, of each of the groups of the particles of 48-65, 65-100, 100-150 and 150-200 mesh of G. L. petroleum cokes crushed by an impact crusher.The results are that Carman shape factor of the crushed particles of the petroleum cokes is approximately 0.31 and that they may be represented to have the approximate shape of ellipsoid of rotation of the ratio of minor axis to major axis between 0.30-0 .40.It has been found that the value of specific surface of petroleum cokes can be calculated for practical purpose by the following empirical approximate equation.Sw≅6.1/√d1·d2