Membrane electrodialysis in hydrometallurgy of titanium-niobates

Several technological characteristics of electrodialysis processes with ion changing membranes, developed for re-extraction and deposition of Ni, Ta and Ti hydroxides, are described. The advantages of this method comparing with conventional processes are considered. These advantages comprise chiefly exception of several reactants and harmful dumps, utilizing of fluorohydrogen acid, shortening of technological cycle and flows as well as increase of ecological efficiency of production and quality of products.2 figs