Table of Contents
Magnetic and Electrical Separation
Volume 8, Issue 4, Pages 221-228

Laboratory Investigations of the Assessment and Preconcentration of Coastal Sillimanite

Regional Research Laboratory, Council of Scientific & Industrial Research, Bhubaneswar 751 013, India

Received 9 May 1997; Revised 24 July 1997; Accepted 14 August 1997

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.


India has a high demand for refractory minerals. Sillimanite is one of the minerals having high refractory characteristics. In this paper, the availability of sillimanite along the coastal belt of Orissa coast and its laboratory beneficiation tests are discussed. The results indicate that +0.5 mm contain shell, 2.8 s.g. floats contain quartz, magnetic heavies contain ilmenite and garnet and the non—magnetic heavies contain mainly sillimanite. The raw sand contains 4% sillimanite and the preconcentrated non—magnetic heavies contain 55 to 65% sillimanite. This product after flotation is suitable for industrial use.