Wet grinding of gibbsite in a bead-mill

Citation
K. Belaroui et al., Wet grinding of gibbsite in a bead-mill, POWD TECH, 105(1-3), 1999, pp. 396-405
Citations number
15
Categorie Soggetti
Chemical Engineering
Journal title
POWDER TECHNOLOGY
ISSN journal
00325910 → ACNP
Volume
105
Issue
1-3
Year of publication
1999
Pages
396 - 405
Database
ISI
SICI code
0032-5910(19991101)105:1-3<396:WGOGIA>2.0.ZU;2-N
Abstract
The phenomena (breakage, abrasion, chipping, etc.) taking place during wet grinding in a bead-mill have been analyzed using a set of tools developed t o allow for a quantitative description of the particle shape. in complement of the classical approach based on selection and breakage functions. Diffe rent operation conditions have being examined for the grinding of gibbsite: concentration of the suspension, mass and diameter of grinding beads, type of gibbsite ("radial" and "mosaic"). Large beads favor the initial breakag e of "radial" gibbsite particles when chipping is observed with small beads . Abrasion is clearly observed in the case of autogenous grinding. "Mosaic" gibbsites were found to be more prone to abrasion in the early moments of the grinding than "radial" gibbsite. (C) 1999 Elsevier Science S.A. All rig hts reserved.