Article | REF: J2252 V1

Characterization and analysis of powders

Authors: Khashayar SALEH, Pierre GUIGON

Publication date: March 10, 2009, Review date: December 1, 2022

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3. Electrical properties

Characterizing the electrical properties of powdered materials is an important aspect of processes such as separation, pulverization and electrostatic dedusting. To understand the phenomena and electrostatic behavior of powders during industrial processing, it is necessary to determine their electrical characteristics. Here, we present two main electrical properties that can be used to qualify the granular medium under study: electrical resistivity and permittivity.

3.1 Dielectric constant or permittivity

A dielectric is characterized by its permittivity, e. This property represents the ability of a material to polarize under the influence of an electric field. In particular, it governs the maximum amount of charge that can...

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Electrical properties

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Measurement of electrostatic charge and charge distribution

Bibliography

(1) - TEUNOU (E.), FITZPATRICK (J.-J.) - Effect of storage time and consolidation on food powder flowability. - Journal of Food Engineering, 43, p. 97-101 (2000).
(2) - RUMPF (H.) - Particle technology. - Chapman and Hall (1979).

Also in our database

SALEH (K.), GUIGON (P.) - Mise en œuvre des poudres. Caractérisation et analyse des propriétés des solides divisés. -

Websites

http://www.kona.or.jp/index_e.html

http://www.bulk-online.com

http://www.directindustry.fr

http://www.hansonresearch.com

...

Events

Science et Technologie des Poudres (STP) et Matériaux frittés Triennial Symposium. May 27-29, 2009, Montpellier.

Société Française du Génie des Procédés (SFGP) biennial congress. October 14-16, 2009, Marseille.

World Congress on Particle Technology Congress held every 3-4 years. April 26-29, 2010, Nuremberg, Germany.

International Congress on Particle Technology...

Standards and norms

Code of practice for Control of undesirable static electricity. Part 2 : Recommendations for particular industrial situations - BS 5958-2 - 1991
Matériels électriques destinés à être utilisés en présence de poussières combustibles. 2e partie : Méthodes d'essai. Section 2 : Méthode de détermination de la résistivité électrique des couches de poussière. Paris La Défense, Union Technique de l'Électricité - CEI 61241-2-2...