On the relationship between porosity and interparticle forces

A. B. Yu, C. L. Feng, R. P. Zou, R. Y. Yang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents an attempt to quantify the relationship between porosity and interparticle forces for mono-sized spheres. Two systems are considered: the packing of wet coarse spheres where the dominant interparticle force is the capillary force, and the packing of dry fine spheres where the dominant force is the van der Waals force. The interrelationships between porosity, capillary force and liquid content are first discussed based on the well-established theories and experimental observations. The resultant relationship between porosity and capillary force is then applied to the packing of fine particles to quantify the van der Waals force in a packing. A generalised relationship between porosity and interparticle forces results as an extension of this analysis. The usefulness of this relationship is finally demonstrated in depicting the fundamentals governing the relationship between porosity and particle size.

Original languageEnglish
Pages (from-to)70-76
Number of pages7
JournalPowder Technology
Volume130
Issue number1-3
DOIs
Publication statusPublished - 19 Feb 2003
Externally publishedYes

Keywords

  • Capillary force
  • Interparticle forces
  • Packing
  • Porosity
  • Van der Waals force

Cite this

Yu, A. B. ; Feng, C. L. ; Zou, R. P. ; Yang, R. Y. / On the relationship between porosity and interparticle forces. In: Powder Technology. 2003 ; Vol. 130, No. 1-3. pp. 70-76.
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On the relationship between porosity and interparticle forces. / Yu, A. B.; Feng, C. L.; Zou, R. P.; Yang, R. Y.

In: Powder Technology, Vol. 130, No. 1-3, 19.02.2003, p. 70-76.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Feng, C. L.

AU - Zou, R. P.

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AB - This paper presents an attempt to quantify the relationship between porosity and interparticle forces for mono-sized spheres. Two systems are considered: the packing of wet coarse spheres where the dominant interparticle force is the capillary force, and the packing of dry fine spheres where the dominant force is the van der Waals force. The interrelationships between porosity, capillary force and liquid content are first discussed based on the well-established theories and experimental observations. The resultant relationship between porosity and capillary force is then applied to the packing of fine particles to quantify the van der Waals force in a packing. A generalised relationship between porosity and interparticle forces results as an extension of this analysis. The usefulness of this relationship is finally demonstrated in depicting the fundamentals governing the relationship between porosity and particle size.

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