TUNGSTIC ACID POWDER CONSISTING OF SPHERICAL TUNGSTEN PARTICLES AND METHOD FOR PRODUCING SAME

摘要

The invention relates to a method for producing spherical tungstic acid powder by acidifying an aqueous solution of alkaline tungstate with mineral acid at a high temperature, preferably in a continuously stirred tank reactor or a cascade of at least two continuously stirred tank reactors, and to tungstic acid thus obtained and characterised by a high bulk density and spherical morphology.