Table of Contents
Magnetic and Electrical Separation
Volume 3, Issue 3, Pages 155-169

Borates in the Argentine Puna: A New Application of Magnetic Separation

Instituto de Beneficio de Minerales, CONICET, Universidad Nacional de Salta, Salta, Buenos Aires 177 - 4400, Argentina

Received 19 June 1991; Accepted 21 October 1991

Copyright © 1992 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.


Large, highly marketable deposits of borate are situated in the north-western Argentina. The exploitation of these deposits started in the beginning of this century. The exploitation and industrialization of some of these deposits during the 1980s turned the region into an important trading centre for export of raw borates and of boric acid. Technical specifications, as regards the iron content in those products, are very rigorous, particularly if they are used in manufacture of high-quality glass. This paper presents a survey of the borate industry in the Puna region of Argentina. A purification technique for "hard borates", based on magnetic separation is described. The study has been carried out using pilot- plant magnetic separators at the IN BE MI, The Salta National University.