发明名称 |
METHOD OF PROCESSING CHEMICAL CONCENTRATE OF NATURAL URANIUM |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: method involves leaching in order to dissolve uranium when the concentrate reacts with nitric acid solution to obtain pulp from the concentrate. Uranium is then extracted from the pulp using tributyl phosphate in a hydrocarbon solvent. The extract is washed and uranium is re-extracted. Extraction is carried out from freshly prepared pulp which is obtained through direct-flow reaction at temperature 20-65C of a stream of a suspension of the concentrate in water which is prepared beforehand and a stream of nitric acid solution with flow rate ratio which ensures nitric acid concentration in the pulp of 25-120 g/l. The period from the beginning of leaching to the beginning of extraction is not more than 10 minutes. ^ EFFECT: protection of extraction from formation of non-demixing emulsions, providing given purity of uranium from ballast impurities and obtaining raffinates which can be removed into underground collector sand layers. ^ 2 tbl, 1 ex |
申请公布号 |
RU2444576(C1) |
申请公布日期 |
2012.03.10 |
申请号 |
RU20100136594 |
申请日期 |
2010.08.31 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "SIBIRSKIJ KHIMICHESKIJ KOMBINAT" |
发明人 |
KRUGLOV SERGEJ NIKOLAEVICH;KOZYREV ANATOLIJ STEPANOVICH;KOROTKEVICH VLADIMIR MIKHAJLOVICH;LAZARCHUK VALERIJ VLADIMIROVICH;RJABOV ALEKSANDR SERGEEVICH;SIL'CHENKO ANDREJ IVANOVICH;TERJAEVA MARINA FEDOROVNA;SHAMIN VIKTOR IVANOVICH;SHEVELEV ANDREJ MIKHAJLOVICH;SHIKERUN TIMOFEJ GENNAD'EVICH |
分类号 |
C22B3/06;C22B3/38;C22B60/02 |
主分类号 |
C22B3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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