Prepn of lanthanum-rich rare-earth metal
In the prepn, the melted electrolyte is a mixture of LiF in 10-30 wt% and RE floride in 70-90 wt% and the said RE floride includes the oxides of La, Ce, Pr and Nd, and calcium floride in 0-10 wt% maybe added into the melted salt. The cathode and anode current densities are 6-12 A/sq cm and 0.1-1.5 A...
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| creator | ZHIHONG ZHANG LONGHUAI CHEN ENBAO LU |
| description | In the prepn, the melted electrolyte is a mixture of LiF in 10-30 wt% and RE floride in 70-90 wt% and the said RE floride includes the oxides of La, Ce, Pr and Nd, and calcium floride in 0-10 wt% maybe added into the melted salt. The cathode and anode current densities are 6-12 A/sq cm and 0.1-1.5 A/sq cm separately. At the electrolyzing temp of 950-1060 deg.C, is added continuously the lanthanum-rich RE oxides of La, Ce, Pr and Nd or the lanthamum-rich RE carbonates. The present invention can produce lanthamum-rich rare-earth metal for negative electrode of nickel-hydrogen cell. |
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The cathode and anode current densities are 6-12 A/sq cm and 0.1-1.5 A/sq cm separately. At the electrolyzing temp of 950-1060 deg.C, is added continuously the lanthanum-rich RE oxides of La, Ce, Pr and Nd or the lanthamum-rich RE carbonates. The present invention can produce lanthamum-rich rare-earth metal for negative electrode of nickel-hydrogen cell.</description><edition>6</edition><language>eng</language><subject>APPARATUS THEREFOR ; CHEMISTRY ; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ; METALLURGY ; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS</subject><creationdate>1997</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970416&DB=EPODOC&CC=CN&NR=1147568A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970416&DB=EPODOC&CC=CN&NR=1147568A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHIHONG ZHANG</creatorcontrib><creatorcontrib>LONGHUAI CHEN</creatorcontrib><creatorcontrib>ENBAO LU</creatorcontrib><title>Prepn of lanthanum-rich rare-earth metal</title><description>In the prepn, the melted electrolyte is a mixture of LiF in 10-30 wt% and RE floride in 70-90 wt% and the said RE floride includes the oxides of La, Ce, Pr and Nd, and calcium floride in 0-10 wt% maybe added into the melted salt. The cathode and anode current densities are 6-12 A/sq cm and 0.1-1.5 A/sq cm separately. At the electrolyzing temp of 950-1060 deg.C, is added continuously the lanthanum-rich RE oxides of La, Ce, Pr and Nd or the lanthamum-rich RE carbonates. The present invention can produce lanthamum-rich rare-earth metal for negative electrode of nickel-hydrogen cell.</description><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</subject><subject>METALLURGY</subject><subject>PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAIKEotyFPIT1PIScwryUjMK83VLcpMzlAoSixK1U1NLCrJUMhNLUnM4WFgTUvMKU7lhdLcDPJuriHOHrqpBfnxqcUFicmpeakl8c5-hoYm5qZmFo7GhFUAABjsJz4</recordid><startdate>19970416</startdate><enddate>19970416</enddate><creator>ZHIHONG ZHANG</creator><creator>LONGHUAI CHEN</creator><creator>ENBAO LU</creator><scope>EVB</scope></search><sort><creationdate>19970416</creationdate><title>Prepn of lanthanum-rich rare-earth metal</title><author>ZHIHONG ZHANG ; LONGHUAI CHEN ; ENBAO LU</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN1147568A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</topic><topic>METALLURGY</topic><topic>PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHIHONG ZHANG</creatorcontrib><creatorcontrib>LONGHUAI CHEN</creatorcontrib><creatorcontrib>ENBAO LU</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHIHONG ZHANG</au><au>LONGHUAI CHEN</au><au>ENBAO LU</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Prepn of lanthanum-rich rare-earth metal</title><date>1997-04-16</date><risdate>1997</risdate><abstract>In the prepn, the melted electrolyte is a mixture of LiF in 10-30 wt% and RE floride in 70-90 wt% and the said RE floride includes the oxides of La, Ce, Pr and Nd, and calcium floride in 0-10 wt% maybe added into the melted salt. The cathode and anode current densities are 6-12 A/sq cm and 0.1-1.5 A/sq cm separately. At the electrolyzing temp of 950-1060 deg.C, is added continuously the lanthanum-rich RE oxides of La, Ce, Pr and Nd or the lanthamum-rich RE carbonates. The present invention can produce lanthamum-rich rare-earth metal for negative electrode of nickel-hydrogen cell.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS THEREFOR CHEMISTRY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS |
| title | Prepn of lanthanum-rich rare-earth metal |
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