FIELD: power industry.
SUBSTANCE: fission products are concentrated by means of evaporation of solutions of nitrates from extraction processing with evaporation ratio till concentration of nitric acid of up to 8 mol/l is obtained in stillage solution with further output of stillage residue to dilute waste nuclear fuel.
EFFECT: simplifying the process and its instrumentation, reducing corrosive power of process medium from the point of view of corrosion effect on structural materials of the equipment, reducing the concentration of corrosion products in BAO, and excluding double evaporation processes, which increases efficiency of the process.
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