发明名称 |
METHOD OF EXTRACTIVE SEPARATION OF RARE-EARTH ELEMENTS |
摘要 |
FIELD: chemical elements separation technologies. ^ SUBSTANCE: method of extractive separation of rare-earth elements having atomic numbers 60-71 and 39 involves extraction in liquid-liquid system composed of aqueous phase containing rare-earth element salts and organic phase containing extractant selected from group of phosphinic acids. Extract is washed and then re-extracted with nitric acid solution. Organic phase contains isododecylphosphetanic acid depicted by following structural formula: . Before extraction, extractant is saturated with rare-earth elements and concentrations of rare-earth elements and nitric acid in initial solution to be extracted are adjusted to 0.30-1.00 M and 0.10-0.20 N, respectively. ^ EFFECT: increased rare-earth element separation efficiency due to more productive extraction processes and reduced consumption of reagents. ^ 5 cl, 1 dwg, 1 tbl |
申请公布号 |
RU2319666(C2) |
申请公布日期 |
2008.03.20 |
申请号 |
RU20060101608 |
申请日期 |
2006.01.23 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "CHEPETSKIJ MEKHANICHESKIJ ZAVOD" (OAO CHMZ);FEDERAL'NOE GOSUDARSTVENNOE UNITARNOE PREDPRIJATIE "VSEROSSIJSKIJ NAUCHNO-ISSLEDOVATEL'SKIJ INSTITUT KHIMICHESKIKH TEKHNOLOGIJ" (FGUP VNIIKHT) |
发明人 |
FEDULOVA TAISIJA TIMOFEEVNA;SELIVANOVSKIJ ANDREJ KONSTANTINOVICH;KOSYNKIN VALERIJ DMITRIEVICH;SHATALOV VALENTIN VASIL'EVICH;ANISIMOVA MARINA JUR'EVNA;BOGATYREV VLADIMIR ALEKSANDROVICH;KARDAPOLOV ALEKSANDR VIKTOROVICH;PLOTNIKOV LEONID ALEKSANDROVICH;SMIRNOV ALEKSEJ GEORGIEVICH;FILIPPOV VLADIMIR BORISOVICH;CHEREMNYKH GENNADIJ SERGEEVICH;SHTUTSA MIKHAIL GEORGIEVICH |
分类号 |
C01F17/00 |
主分类号 |
C01F17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|