Extraction and Stripping of Uranyl Nitrate

Uranyl nitrate was extracted and stripped in pulsed packed columns and the values of (HTU)OR were determined. The eynerimental conditions were as follows.Amplitude of pulse 0.7-1.6cmFrequency" 73-185cpmFlow-rate 2-11m3/mm2hrUO2(NO3)2 concentration 0.01-0.22mol/lHNO3" 3-7" for extraction(NH4)2SO4" 0-40wt.%·····for strippingResults:(1) (HTU)OR decreased with the increase of a×f, and showed a constant value when a×f>160 cm/min.(2) (HTU)OR were influenced by the flow ratio, but at a good pulsation, its influence became slight.(3) In the case of extraction, (HTU)OR varied with the concentration of salting-out agent and that of UO2(NO3)2 at the inlet.(4) In the case of stripping, (HTU)OR as well as the yield of uranium depended greatly upon the flow-ratio and the concentration of the uranium, which was especially obvious with the yield of uranlum.(5) When (NH4)2SO4 was used for stripping, the changes in (HTU)OR and the yield of uranium were not So great.