|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Alumina and Bauxite
||Effects of the Granular Properties of Bauxite Pisolites on the Solid/Liquid Separation in Liquid Fluidized Beds of Classifiers
||Thomas Grillot, Guy Simard, Romain Chesnaux, Damien Boudeville, Lou Perrachon
|On-Site Speaker (Planned)
Bauxite pisolites found in the Cape York region in Australia are typically near spherical particles. Ore extracted from the Andoom (Weipa) deposit goes through a beneficiation plant to remove the finer fraction, that otherwise lead to handling problems. A key part of the beneficiation flowsheet is a fluidized bed classifier, where fine particles are removed with an overflow system. The objective of this project was to study and understand the solid/liquid separation phenomena taking place in the fluidized bed, especially determining the role of the granular properties in controlling the separation mechanisms. Lab-scale experiments, using a transparent tank and glass beads of controlled grain-size, in place of bauxite, allowed an accurate observation of the fluidized bed behavior. Computer modeling using multi-phase flow, was used to perform the numerical simulations of the experimental setup and establish the relative effects of the parameters that control the separation processes in the fluidized bed.
||Planned: Light Metals