Table of Contents
Magnetic and Electrical Separation
Volume 6, Issue 3, Pages 161-170
http://dx.doi.org/10.1155/1995/71218

Development of a Combined Gravity–Magnetic Sepaitation Process for Magnesite ORE Using HGMS

1Institute for Technology of Nuclear and Mineral Raw Materials, Belgrade, Serbia
2University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia
3University of Belgrade, Technical Faculty Bor, Bor, Serbia

Received 7 February 1995; Accepted 23 March 1995

Copyright © 1995 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

Most magnesite deposits in Yugoslavia contain serpentine and olivine as impurities. Heavy medium separation is used for the beneficiation of raw magnesite ore with particle size greater than 0.35 ram. The results of investigations reported in this work indicate a possibility of efficient removal of serpentine and olivine using HGMS and superconducting magnetic separators for fines smaller than 0.35 ram. Based on these results a new technological process for magnesite upgrading was established. The process combines the gravity and magnetic separation processes for treatment of raw material, as well as for magnesite after its decarbonisation. It is possible to upgrade the magnesite fines below 0.35 mm which are rejected from the conventional processes. The grade of the magnesite concentrate of 98% and above may be obtained using this process.