Chlorination is one of promising methods of processing the difficult - stripping raw materials, containing the Nb and Ta compounds. Distribution of basic and impurity components (Ta, Nb, Ti, Zr, Fe, Al, Sn and W) is studied during stryuverite concentrate processing by chlorination method. The chemical and physico-chemical methods are used in purification of Ta, Nb and Ti compounds from impurities of Fe, Al, Zr, W and Sn. Degree of purification in melt of salt spray filter from impurities is 95.9-99.7%.