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Calculating Shape Factors from Particle Sizing Data
Author(s) -
Barreiros Fatima M.,
Ferreira Paulo J.,
Figueiredo M. Margarida
Publication year - 1996
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19960130607
Subject(s) - sphericity , sizing , particle (ecology) , shape factor , materials science , particle size , work (physics) , mechanics , composite material , mathematics , physics , thermodynamics , geometry , geology , chemistry , chemical engineering , engineering , oceanography , organic chemistry
It is well established that particle size and shape substantially influence the bulk properties of powdered materials. Although these characteristics are closely interrelated, the tendency has been to analyse the particle size independently from particle shape. The aim of this work was the assessment of particle shape through particle sizing data. For this purpose, three different particle shape materials – glass beads (spherical), crushed glass (moderately irregular) and mica (lamellar) – were tested, employing four particle sizers. The shape factor selected was the Wadell's sphericity, which was evaluated utilizing distinct equations. The comparison of the results reveals problems arising from the use of approximations rather than more fundamental equations.