Abstract

The technique of measuring the aerated and tapped bulk density of powders has been refined and use made of the rate of densification between the aerated and tapped states to provide an additional descriptor of the bulk structure and the microstructure of the powder. The descriptor values were used to differentiate between a range of commercial zeolites of very similar primary particle size but which had a varying bulk structure and microstructure caused by their different agglomeration characteristics. The tapped density modelling provided microstructural information which was an agreement with SEM images and furthermore quantified the structure. An experimental technique has been developed which has a general predictive value for the nature of a powder microstructure.

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