METHOD OF HYDROGEN-FREE REGENERATION OF TUNGSTEN-CONTAINING HARD ALLOYS

摘要

A method of hydrogen-free regeneration of tungsten-containing hard alloys includes oxidation of waste, reduction-carbidization of oxidation products. Reduction-carbidization is carried out in carbonaceous medium produced during reaction of oxidation products with a graphite powder with its excess of 5-30 % of its optimal amount and its grain size less than 100 microns.