Decomposition of bastnasite and monazite mixed rare earth minerals calcined by alkali liquid
The process of decomposion of the bastnasite and monazite rare earth concentrates by alkali solutions was investigated. The mixed slurries of the rare earth concentrates and the alkali solutions were calcined at different temperatures in a rotary tubular electric furnace. The effects of calcination...
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| Veröffentlicht in: | Journal of rare earths 2012-02, Vol.30 (2), p.155-158 |
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| container_title | Journal of rare earths |
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| creator | 许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才 |
| description | The process of decomposion of the bastnasite and monazite rare earth concentrates by alkali solutions was investigated. The mixed slurries of the rare earth concentrates and the alkali solutions were calcined at different temperatures in a rotary tubular electric furnace. The effects of calcination temperature on the decomposing ratio of rare earth, the oxidation ratio of cerium, the stripping of fluorine and phospho-rous after calcinations, and the adaptability of the process to the mixed rare earth concentrates of different grade were studied. The results showed that the decomposition ratio of rare earth and the oxidation ratio of cerium could reach 95.8% and 93.7%, respectively, while the cal-cinating temperature was above 300℃. |
| doi_str_mv | 10.1016/S1002-0721(12)60014-3 |
| format | Article |
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The mixed slurries of the rare earth concentrates and the alkali solutions were calcined at different temperatures in a rotary tubular electric furnace. The effects of calcination temperature on the decomposing ratio of rare earth, the oxidation ratio of cerium, the stripping of fluorine and phospho-rous after calcinations, and the adaptability of the process to the mixed rare earth concentrates of different grade were studied. The results showed that the decomposition ratio of rare earth and the oxidation ratio of cerium could reach 95.8% and 93.7%, respectively, while the cal-cinating temperature was above 300℃.</description><identifier>ISSN: 1002-0721</identifier><identifier>EISSN: 2509-4963</identifier><identifier>DOI: 10.1016/S1002-0721(12)60014-3</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Bastnasite ; Calcination ; Cerium oxide ; Concentrates ; Decomposition ; decomposition ratio ; fluid alkali ; mixed rare earth concentrates ; Monazite ; Oxidation ; Rare earth metals ; 分解率 ; 氟碳铈矿 ; 混合稀土精矿 ; 溶液混合 ; 焙烧温度 ; 独居石 ; 碱液 ; 稀土矿</subject><ispartof>Journal of rare earths, 2012-02, Vol.30 (2), p.155-158</ispartof><rights>2012 The Chinese Society of Rare Earths</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c368t-1062861975daf15e5581454e95bc78ac1c4fe5b16078cec7d9bee65ea111a9983</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/84120X/84120X.jpg</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1002072112600143$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才</creatorcontrib><title>Decomposition of bastnasite and monazite mixed rare earth minerals calcined by alkali liquid</title><title>Journal of rare earths</title><addtitle>Journal of Rare Earths</addtitle><description>The process of decomposion of the bastnasite and monazite rare earth concentrates by alkali solutions was investigated. The mixed slurries of the rare earth concentrates and the alkali solutions were calcined at different temperatures in a rotary tubular electric furnace. The effects of calcination temperature on the decomposing ratio of rare earth, the oxidation ratio of cerium, the stripping of fluorine and phospho-rous after calcinations, and the adaptability of the process to the mixed rare earth concentrates of different grade were studied. The results showed that the decomposition ratio of rare earth and the oxidation ratio of cerium could reach 95.8% and 93.7%, respectively, while the cal-cinating temperature was above 300℃.</description><subject>Bastnasite</subject><subject>Calcination</subject><subject>Cerium oxide</subject><subject>Concentrates</subject><subject>Decomposition</subject><subject>decomposition ratio</subject><subject>fluid alkali</subject><subject>mixed rare earth concentrates</subject><subject>Monazite</subject><subject>Oxidation</subject><subject>Rare earth metals</subject><subject>分解率</subject><subject>氟碳铈矿</subject><subject>混合稀土精矿</subject><subject>溶液混合</subject><subject>焙烧温度</subject><subject>独居石</subject><subject>碱液</subject><subject>稀土矿</subject><issn>1002-0721</issn><issn>2509-4963</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkElLBDEQhYMoOC4_QYg3PbSmkk4vJxF3EDyoNyGk09VjtDuZSXpE_fVmZsSrp1r4Xj3qEXIA7AQYFKePwBjPWMnhCPhxwRjkmdggEy5ZneV1ITbJ5A_ZJjsxvjEmSlmzCXm5ROOHmY92tN5R39FGx9HpNCPVrqWDd_p7OQz2E1sadECKOoyvaeEw6D5So3uT-pY2X1T377q3tLfzhW33yFaXANz_rbvk-frq6eI2u3-4ubs4v8-MKKoxA1bwqoC6lK3uQKKUFeQyx1o2pqy0AZN3KBsoWFkZNGVbN4iFRA0Auq4rsUuO1ndnwc8XGEc12Giw77VDv4gKGOdVxQTkCZVr1AQfY8BOzYIddPhKkFqmqVZpqmVUCrhapalE0p2tdZj--LAYVDQWncHWBjSjar3998Lhr_Ord9O5ddM_6zwJhOCl-AFel4eP</recordid><startdate>20120201</startdate><enddate>20120201</enddate><creator>许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才</creator><general>Elsevier B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20120201</creationdate><title>Decomposition of bastnasite and monazite mixed rare earth minerals calcined by alkali liquid</title><author>许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-1062861975daf15e5581454e95bc78ac1c4fe5b16078cec7d9bee65ea111a9983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Bastnasite</topic><topic>Calcination</topic><topic>Cerium oxide</topic><topic>Concentrates</topic><topic>Decomposition</topic><topic>decomposition ratio</topic><topic>fluid alkali</topic><topic>mixed rare earth concentrates</topic><topic>Monazite</topic><topic>Oxidation</topic><topic>Rare earth metals</topic><topic>分解率</topic><topic>氟碳铈矿</topic><topic>混合稀土精矿</topic><topic>溶液混合</topic><topic>焙烧温度</topic><topic>独居石</topic><topic>碱液</topic><topic>稀土矿</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-工程技术</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of rare earths</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>许延辉 刘海蛟 孟志军 崔建国 赵文怡 李良才</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Decomposition of bastnasite and monazite mixed rare earth minerals calcined by alkali liquid</atitle><jtitle>Journal of rare earths</jtitle><addtitle>Journal of Rare Earths</addtitle><date>2012-02-01</date><risdate>2012</risdate><volume>30</volume><issue>2</issue><spage>155</spage><epage>158</epage><pages>155-158</pages><issn>1002-0721</issn><eissn>2509-4963</eissn><abstract>The process of decomposion of the bastnasite and monazite rare earth concentrates by alkali solutions was investigated. The mixed slurries of the rare earth concentrates and the alkali solutions were calcined at different temperatures in a rotary tubular electric furnace. The effects of calcination temperature on the decomposing ratio of rare earth, the oxidation ratio of cerium, the stripping of fluorine and phospho-rous after calcinations, and the adaptability of the process to the mixed rare earth concentrates of different grade were studied. The results showed that the decomposition ratio of rare earth and the oxidation ratio of cerium could reach 95.8% and 93.7%, respectively, while the cal-cinating temperature was above 300℃.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S1002-0721(12)60014-3</doi><tpages>4</tpages></addata></record> |
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| ispartof | Journal of rare earths, 2012-02, Vol.30 (2), p.155-158 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals; Alma/SFX Local Collection |
| subjects | Bastnasite Calcination Cerium oxide Concentrates Decomposition decomposition ratio fluid alkali mixed rare earth concentrates Monazite Oxidation Rare earth metals 分解率 氟碳铈矿 混合稀土精矿 溶液混合 焙烧温度 独居石 碱液 稀土矿 |
| title | Decomposition of bastnasite and monazite mixed rare earth minerals calcined by alkali liquid |
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