Table of Contents
Magnetic Separation News
Volume 1 (1984), Issue 2, Pages 67-99

High Gradient Magnetic Gas Filtration

Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD, UK

Received 11 November 1983; Accepted 8 January 1984

Copyright © 1984 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.


Highly successful tests have shown that high gradient magnetic filtration can provide a viable alternative to conventional filtration to curb the amount of stack gas particulate emissions from iron-based industries, especially steelmaking processes. Using basic oxygen furnace dust in our work at Sheffield University, filtration efficiencies of 99% and greater were obtained for submicron particles down to an optically measurable 0.24 μm diameter; for particles of 1 μm and above, 100% filtration efficiency was achieved. High gas throughput, together with low pressure losses, low applied magnetic fields and good filter matrix loadability all further indicate the potential commercial practicality of HGMF in the steelmaking industry.