Study of the Shape Separation of Fine Particles Using Fluid Fields. Dynamic Properties of Irregular Shaped Particles in Wet Cyclones

Autor:	Shigehisa Endoh, Hitoshi Ohya, Masuda Kaoru, Hiroyuki Iwata, Chihiro Ikeda, Shigeyuki Suzuki
Rok vydání:	1992
Předmět:	Fluid Flow and Transfer Processes Range (particle radiation) Materials science Process Chemistry and Technology Mineralogy Filtration and Separation Size measurement Thin disc Ellipsoid Catalysis Condensed Matter::Soft Condensed Matter Settling Cyclone Particle Mica Composite material
Zdroj:	Journal of the Society of Powder Technology, Japan. 29:838-844
ISSN:	1883-7239 0386-6157
Popis:	In order to apply hydrodynamic fields to the shape separation of fine particles, the dependencies of dynamic properties of particles in a cyclone on the particle shape were discussed. Glass beads, glass powders, silica sands and mica particles in a 10-100μm size range were classified into five fractions by wet cylclones. The equivalent diameters of classified particles were measured by a free settling method, and the geometric parameters were obtained from SEM microphotos. The Stokes diameters in free settling were in agreement with the mean values which were estimated for an ellipsoid and a thin disc to settle in random orientation. On the other hands, Stokes diameters in the cyclones were smaller than those in free settling. The discrepancy between these diameters was large especially for flaky mica particles, suggesting that a cyclone can be used to separate flaky particles from blocky ones.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a8559a603b780ec098df44900d977e7 https://doi.org/10.4164/sptj.29.838 Zobrazit plný text záznamu