Table of Contents
Physical Separation in Science and Engineering
Volume 12, Issue 3, Pages 133-143
http://dx.doi.org/10.1080/1478647031000154234

The Effect of Roasting Temperature on Ilmenite Particle Rotation Characteristics in a Rotating Magnetic Field

Ka (Pty) Ltd, 14 Station Lane, Exton, Tasmania 7303, Australia

Received 24 March 2003; Accepted 25 April 2003

Copyright © 2003 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Individual ilmenite particle measurements of magnetic susceptibility and magnetic rotation index show that, as ilmenite roast temperatures increase, both the magnetic anisotropy and the coercive force increase. By around 650°C the particles are behaving magnetically, in magnetic fields up to 0.3 T as though they contain magnetic elements with a single unidirectional magnetic axis.The presence of some magnetic field, even that of the earth, during the cooling of ilmenite samples roasted above 500°C may be essential to the magnetising roast process.