Method for purifying and removing iron from high-purity hafnium tetrachloride
The invention provides a method for purifying and removing iron from high-purity hafnium tetrachloride, which comprises the following steps: step 1, adding pure water into a round-bottom flask, adding high-purity hafnium oxide powder while stirring, stirring until complete reaction, and filtering to...
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| creator | CHEN FANGHUI YIN LIANG QIU YEHONG |
| description | The invention provides a method for purifying and removing iron from high-purity hafnium tetrachloride, which comprises the following steps: step 1, adding pure water into a round-bottom flask, adding high-purity hafnium oxide powder while stirring, stirring until complete reaction, and filtering to obtain a hafnium oxychloride solution; 2, preparing an extracting agent; step 3, taking the hafnium oxychloride solution and an extracting agent, and extracting to obtain low-iron hafnium oxychloride solution raffinate and a loaded organic phase; step 4, adding the loaded organic phase into a sulfuric acid solution to perform reverse extraction, regenerating the organic phase, and performing extraction operation on the regenerated organic phase to obtain raffinate; 5, the raffinate is subjected to ammonia water precipitation, washing, drying and calcination in sequence, and hafnium oxide is obtained; and 6, mixing hafnium oxide and carbon powder in proportion, adding the mixture into the tubular furnace, replacing |
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2, preparing an extracting agent; step 3, taking the hafnium oxychloride solution and an extracting agent, and extracting to obtain low-iron hafnium oxychloride solution raffinate and a loaded organic phase; step 4, adding the loaded organic phase into a sulfuric acid solution to perform reverse extraction, regenerating the organic phase, and performing extraction operation on the regenerated organic phase to obtain raffinate; 5, the raffinate is subjected to ammonia water precipitation, washing, drying and calcination in sequence, and hafnium oxide is obtained; and 6, mixing hafnium oxide and carbon powder in proportion, adding the mixture into the tubular furnace, replacing</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; FERROUS OR NON-FERROUS ALLOYS ; INORGANIC CHEMISTRY ; METALLURGY ; PRETREATMENT OF RAW MATERIALS ; PRODUCTION AND REFINING OF METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2023</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=20230124&DB=EPODOC&CC=CN&NR=115637337A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230124&DB=EPODOC&CC=CN&NR=115637337A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CHEN FANGHUI</creatorcontrib><creatorcontrib>YIN LIANG</creatorcontrib><creatorcontrib>QIU YEHONG</creatorcontrib><title>Method for purifying and removing iron from high-purity hafnium tetrachloride</title><description>The invention provides a method for purifying and removing iron from high-purity hafnium tetrachloride, which comprises the following steps: step 1, adding pure water into a round-bottom flask, adding high-purity hafnium oxide powder while stirring, stirring until complete reaction, and filtering to obtain a hafnium oxychloride solution; 2, preparing an extracting agent; step 3, taking the hafnium oxychloride solution and an extracting agent, and extracting to obtain low-iron hafnium oxychloride solution raffinate and a loaded organic phase; step 4, adding the loaded organic phase into a sulfuric acid solution to perform reverse extraction, regenerating the organic phase, and performing extraction operation on the regenerated organic phase to obtain raffinate; 5, the raffinate is subjected to ammonia water precipitation, washing, drying and calcination in sequence, and hafnium oxide is obtained; and 6, mixing hafnium oxide and carbon powder in proportion, adding the mixture into the tubular furnace, replacing</description><subject>CHEMISTRY</subject><subject>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PRETREATMENT OF RAW MATERIALS</subject><subject>PRODUCTION AND REFINING OF METALS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAQgOEsDqK-w_kAHUrQzlIUlzq5l9BcmoMmF65XoW8vBR_A6eeHb2-6DjWyh8ACZREKK-URXPYgmPizDQlnCMIJIo2x2pSuEF3ItCRQVHFDnFjI49HsgptmPP16MOfH_d0-Kyzc41zcgBm1b191fbnaxtrmZv8xXwxJNrM</recordid><startdate>20230124</startdate><enddate>20230124</enddate><creator>CHEN FANGHUI</creator><creator>YIN LIANG</creator><creator>QIU YEHONG</creator><scope>EVB</scope></search><sort><creationdate>20230124</creationdate><title>Method for purifying and removing iron from high-purity hafnium tetrachloride</title><author>CHEN FANGHUI ; 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2, preparing an extracting agent; step 3, taking the hafnium oxychloride solution and an extracting agent, and extracting to obtain low-iron hafnium oxychloride solution raffinate and a loaded organic phase; step 4, adding the loaded organic phase into a sulfuric acid solution to perform reverse extraction, regenerating the organic phase, and performing extraction operation on the regenerated organic phase to obtain raffinate; 5, the raffinate is subjected to ammonia water precipitation, washing, drying and calcination in sequence, and hafnium oxide is obtained; and 6, mixing hafnium oxide and carbon powder in proportion, adding the mixture into the tubular furnace, replacing</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Method for purifying and removing iron from high-purity hafnium tetrachloride |
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