LIQUID PURIFICATION METHOD Russian patent published in 1995 - IPC

FIELD: chemically industry. SUBSTANCE: purified chloride mother liquor with concentration of finely crystalline uranium tetrafluoride 0,5 kg/m³ is being passed with linear stream speed of 10 50 m/h through filtering layers of wood sawdust separated from each other by perforated partitions. First and last layers along stream direction are made of wood sawdust with particles size of 2.5 10 mm and intermediate layer of 1 2.5 mm particles. Filtered solution is fed from below and regenerating solution from above. EFFECT: liquid purification method is used in chemical industry. 2 cl, 2 tbl