Table of Contents
Magnetic and Electrical Separation
Volume 3, Issue 1, Pages 17-32

Superconducting Magnetic Separators

1Physics Department, University of the Witwatersrand, Johannesburg, South Africa
2Oxford Instruments, Eynsham, UK

Received 13 February 1991

Copyright © 1991 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.


The fields available with conventional electromagnets are limited to 2 Tesla by the saturation of iron. In addition, the creation of large field volumes is costly in terms of copper, iron and electric power. For these reasons superconducting separator magnets were proposed as early as 1970. This paper deals with the special requirements of cryomagnets in the mineral processing industry, and the relatively slow rate of replacement of conventional magnets. Finally, the impact of the new high-temperature superconductors is examined briefly.