The solubility and dissolution rate of uranium dioxide in salt mixture
s (1-x)Na2WO4 + xWO(3) (x = 0.1-0.5 mole fraction) is studied employin
g the isothermal saturation method complemented by the concurrent chem
ical and electrochemical monitoring of the uranium concentration in th
e melt, at temperatures 973-1173 K, in a helium atmosphere.