Abstract
The influence of the keeping time, temperature, and concentrations of U and HNO3 on the residual content of Mo and Zr in the solution was examined. An increase in the preliminary keeping time favors more complete precipitation. An increase in the uranium concentration to 800 g l−1 and/or in the temperature to 105°C leads to growing formation of precipitates of molybdic acid (in the absence of Zr) or zirconium molybdate. The presence of zirconium promotes, and an increase in the acidity impedes the process.
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