The Effect of Foreign Ions on Separation of Hafnium from Zirconium on Diphonix® Resin

The weight distribution coefficients (λ _M) of the most often occurring in zirconium salts ions (M(II), M(III) and M(IV)) have been determined in established earlier optimal conditions for separation of zirconium from hafnium by means of Diphonix® resin. Their values range from 21 (λ _Zn(II)) to 1830 (λ _Ti(IV)) and depend on the charge of M ion as well as on its radius. For ions of the highest λ _M (Ti(IV) and Fe(III)) their influence on hafnium - zirconium separation has been studied. Ti(IV) ions at concentration of 1% (in relation to Zr) has been found to noticeably affect separation of hafnium from zirconium by means of Diphonix® resin.