Extraction of Rare-Earth Elements in Hydrofluoride Decomposition of Loparite Concentrate
Distribution and existence forms of rare-earth elements in decomposition of the loparite concentrate with ammonium hydrofluoride were studied. It was found that, in the course of the aqueous leaching of the fluorinated concentrate, rare-earth elements fully remain in the insoluble residue as complex...
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| Veröffentlicht in: | Russian journal of applied chemistry 2018-10, Vol.91 (10), p.1665-1670 |
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| container_title | Russian journal of applied chemistry |
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| creator | Krysenko, G. F. Epov, D. G. Medkov, M. A. Sitnik, P. V. Avramenko, V. A. |
| description | Distribution and existence forms of rare-earth elements in decomposition of the loparite concentrate with ammonium hydrofluoride were studied. It was found that, in the course of the aqueous leaching of the fluorinated concentrate, rare-earth elements fully remain in the insoluble residue as complex salts of general formula NaLnF
4
. The process of pyrohydrolysis of the insoluble residue was examined. It was shown that varying the process conditions always results in that a NaLnF4-containing product is obtained. It was found that rare-earth elements can be extracted from the insoluble residue and separated from calcium and thorium, and the conditions for this extraction were determined. |
| doi_str_mv | 10.1134/S1070427218100142 |
| format | Article |
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4
. The process of pyrohydrolysis of the insoluble residue was examined. It was shown that varying the process conditions always results in that a NaLnF4-containing product is obtained. It was found that rare-earth elements can be extracted from the insoluble residue and separated from calcium and thorium, and the conditions for this extraction were determined.</description><identifier>ISSN: 1070-4272</identifier><identifier>EISSN: 1608-3296</identifier><identifier>DOI: 10.1134/S1070427218100142</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Chemistry ; Chemistry and Materials Science ; Chemistry/Food Science ; Decomposition ; Fluorination ; Industrial Chemistry/Chemical Engineering ; Inorganic Synthesis and Industrial Inorganic Chemistry ; Leaching ; Pyrohydrolysis ; Rare earth elements ; Thorium ; Trace elements</subject><ispartof>Russian journal of applied chemistry, 2018-10, Vol.91 (10), p.1665-1670</ispartof><rights>Pleiades Publishing, Ltd. 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c353t-ee58f8be5aef48ce3f5bac826cbca906d4fb8def83fcd5661059f14c1b5141e83</citedby><cites>FETCH-LOGICAL-c353t-ee58f8be5aef48ce3f5bac826cbca906d4fb8def83fcd5661059f14c1b5141e83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1070427218100142$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1070427218100142$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,782,786,27931,27932,41495,42564,51326</link.rule.ids></links><search><creatorcontrib>Krysenko, G. F.</creatorcontrib><creatorcontrib>Epov, D. G.</creatorcontrib><creatorcontrib>Medkov, M. A.</creatorcontrib><creatorcontrib>Sitnik, P. V.</creatorcontrib><creatorcontrib>Avramenko, V. A.</creatorcontrib><title>Extraction of Rare-Earth Elements in Hydrofluoride Decomposition of Loparite Concentrate</title><title>Russian journal of applied chemistry</title><addtitle>Russ J Appl Chem</addtitle><description>Distribution and existence forms of rare-earth elements in decomposition of the loparite concentrate with ammonium hydrofluoride were studied. It was found that, in the course of the aqueous leaching of the fluorinated concentrate, rare-earth elements fully remain in the insoluble residue as complex salts of general formula NaLnF
4
. The process of pyrohydrolysis of the insoluble residue was examined. It was shown that varying the process conditions always results in that a NaLnF4-containing product is obtained. It was found that rare-earth elements can be extracted from the insoluble residue and separated from calcium and thorium, and the conditions for this extraction were determined.</description><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Chemistry/Food Science</subject><subject>Decomposition</subject><subject>Fluorination</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Inorganic Synthesis and Industrial Inorganic Chemistry</subject><subject>Leaching</subject><subject>Pyrohydrolysis</subject><subject>Rare earth elements</subject><subject>Thorium</subject><subject>Trace elements</subject><issn>1070-4272</issn><issn>1608-3296</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kF9LwzAUxYMoOKcfwLeAz9XcNE3TR5nVCQPBP-BbSdMb7diammTgvr0ZU3wQn-6Bc37nwiHkHNglQC6unoCVTPCSgwLGQPADMgHJVJbzSh4mnexs5x-TkxCWjLFKSjUhr_Vn9NrE3g3UWfqoPWa19vGd1itc4xAD7Qc633be2dXG-b5DeoPGrUcX-h9q4Ubt-4h05gaTGK8jnpIjq1cBz77vlLzc1s-zebZ4uLufXS8ykxd5zBALZVWLhUYrlMHcFq02ikvTGl0x2Qnbqg6tyq3pCimBFZUFYaAtQACqfEou9r2jdx8bDLFZuo0f0suGpwHKsoJSpBTsU8a7EDzaZvT9WvttA6zZDdj8GTAxfM-ElB3e0P82_w99AQThc2k</recordid><startdate>20181001</startdate><enddate>20181001</enddate><creator>Krysenko, G. F.</creator><creator>Epov, D. G.</creator><creator>Medkov, M. A.</creator><creator>Sitnik, P. V.</creator><creator>Avramenko, V. A.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20181001</creationdate><title>Extraction of Rare-Earth Elements in Hydrofluoride Decomposition of Loparite Concentrate</title><author>Krysenko, G. F. ; Epov, D. G. ; Medkov, M. A. ; Sitnik, P. V. ; Avramenko, V. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c353t-ee58f8be5aef48ce3f5bac826cbca906d4fb8def83fcd5661059f14c1b5141e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Chemistry/Food Science</topic><topic>Decomposition</topic><topic>Fluorination</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Inorganic Synthesis and Industrial Inorganic Chemistry</topic><topic>Leaching</topic><topic>Pyrohydrolysis</topic><topic>Rare earth elements</topic><topic>Thorium</topic><topic>Trace elements</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Krysenko, G. F.</creatorcontrib><creatorcontrib>Epov, D. G.</creatorcontrib><creatorcontrib>Medkov, M. A.</creatorcontrib><creatorcontrib>Sitnik, P. V.</creatorcontrib><creatorcontrib>Avramenko, V. A.</creatorcontrib><collection>CrossRef</collection><jtitle>Russian journal of applied chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Krysenko, G. F.</au><au>Epov, D. G.</au><au>Medkov, M. A.</au><au>Sitnik, P. V.</au><au>Avramenko, V. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extraction of Rare-Earth Elements in Hydrofluoride Decomposition of Loparite Concentrate</atitle><jtitle>Russian journal of applied chemistry</jtitle><stitle>Russ J Appl Chem</stitle><date>2018-10-01</date><risdate>2018</risdate><volume>91</volume><issue>10</issue><spage>1665</spage><epage>1670</epage><pages>1665-1670</pages><issn>1070-4272</issn><eissn>1608-3296</eissn><abstract>Distribution and existence forms of rare-earth elements in decomposition of the loparite concentrate with ammonium hydrofluoride were studied. It was found that, in the course of the aqueous leaching of the fluorinated concentrate, rare-earth elements fully remain in the insoluble residue as complex salts of general formula NaLnF
4
. The process of pyrohydrolysis of the insoluble residue was examined. It was shown that varying the process conditions always results in that a NaLnF4-containing product is obtained. It was found that rare-earth elements can be extracted from the insoluble residue and separated from calcium and thorium, and the conditions for this extraction were determined.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1070427218100142</doi><tpages>6</tpages></addata></record> |
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| subjects | Chemistry Chemistry and Materials Science Chemistry/Food Science Decomposition Fluorination Industrial Chemistry/Chemical Engineering Inorganic Synthesis and Industrial Inorganic Chemistry Leaching Pyrohydrolysis Rare earth elements Thorium Trace elements |
| title | Extraction of Rare-Earth Elements in Hydrofluoride Decomposition of Loparite Concentrate |
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