Table of Contents
Magnetic and Electrical Separation
Volume 9, Issue 1, Pages 1-25

Ferrofluids- Magnetisable Liquids and Their Application in Density Separation

ZARM, University of Bremen, Am Fallturm, Bremen 28359, Germany

Received 30 December 1997; Accepted 23 January 1998

Copyright © 1998 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.


Stable suspensions of magnetic particles exhibit specific features making them an innovative liquid material for numerous applications as well as for basic research. In particular ferrofluids can be used for density separation of non-magnetic materials immersed in the liquid under the influence of magnetic fields. In this article the basic properties and applications of ferrofluids will be reviewed, and the principles of magnetic density separation will be discussed on the basis of the available literature. In addition we will try to show the possibility and problems of a commercial use of this technique.