发明名称 METHOD OF EXTRACTION SEPARATION OF CESIUM, STRONTIUM, TECHNETIUM, RARE-EARTH AND ACTINIDE ELEMENTS FROM LIQUID RADIOACTIVE RESIDUES
摘要 <p>reprocessing used nuclear fuel. SUBSTANCE: cesium and strontium are extracted from nitrates of radioactive residues containing nitration in the amount of up to 4 mole/l by means of solution of chlorinated cobalt dicarbollide, 0.06 to 0.25 mole/l and 8 to 40 g/l of substituted polyethylene glycol in mixture of fluorinated ethers. Raffinate obtained after extraction is treated with phosphinoxyde solution in saturated hydrocarbons. Technetium, rare-earth and actinide elements change to organic phase. Cesium and strontium re- extracted by ammonium nitrate or hexamethylenetetramine. Re- extraction of uranium, plutonium and technetium is effected by means of mixed solution of ammonium carbonate or bicarbonate and complexone. EFFECT: enhanced efficiency of extraction of dangerous radioactive nuclides. 6 cl, 5 tbl, 6 ex</p>
申请公布号 RU2180868(C2) 申请公布日期 2002.03.27
申请号 RU19990125737 申请日期 1999.12.07
申请人 IZVODSTVENNOE OB"EDINENIE "RADIEVYJ INSTITUT IM. V 发明人 ZAJTSEV B.N.;ESIMANTOVSKIJ V.M.;LAZAREV L.N.;DZEKUN E.G.;ROMANOVSKIJ V.N.;TODD TERRI ALLEN;BRJUER KEN NIL;KHERBST RONALD SKOTT;LOU DZHEK DUGLAS
分类号 B01D11/04;C22B3/26;C22B26/00;G21C19/46;G21F9/06;(IPC1-7):B01D11/04 主分类号 B01D11/04
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