Current Practices in Tungsten Extraction and Recovery

Abstract

Tungsten, because of its properties and various industrial application in high strength, high temperature areas occupies a prime position amongst metals. A considerable interest is still maintained in producing tungsten metal in purer form, thus resulting in use of more modern separation techniques. Also, because of its value and non-uniform distribu- tion of ores, a considerable amount of work is being carried out in recycling of tungsten bearing scrap. This secondary source reduces to a considerable extent the dependence on foreign supply for many countries like India. A review of current research efforts and various methods of scrap recovery is being presented. © 1990, Walter de Gruyter. All rights reserved.