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公开(公告)号：EP1807353B1
公开(公告)日：2010-08-18
申请号：EP05809106.7
申请日：2005-10-07
发明人： DELONS, Laurence , LAGARDE, Stéphane , PORIEL, Ludovic , LEMAIRE, Marc , FAVRE-REGUILLON, Alain , PELLET-ROSTAING, Stéphane
IPC分类号： C01G27/04
CPC分类号： C01G27/003 , B01J41/04 , C01G25/003 , C01G25/04 , C01G27/04
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2.发明公开PROCEDE DE SEPARATION DES TETRACHLORURES DE ZIRCONIUM ET D'HAFNIUM DE LEURS MELANGES 审中-公开PROCESS FOR锆从它们的混合物中分离和HAFNIUMTETRACHLORIDEN
公开(公告)号：EP2601140A1
公开(公告)日：2013-06-12
申请号：EP11757381.6
申请日：2011-08-02
CPC分类号： C22B3/20 , C01G25/003 , C01G25/04 , C01G27/003 , C01G27/04 , C01P2002/86 , C22B3/42 , C22B34/14 , Y02P10/234
摘要： One of the aspects of the invention is to propose an industrial separation process that is simple, inexpensive and non-corrosive which makes it possible to separate zirconium and hafnium tetrachlorides from mixtures thereof. Another aspect of the invention is to propose a simple industrial process that enables the zirconium/hafnium separation. Another aspect of the invention is to propose a process that makes it possible to produce fractions that are enriched in zirconium and that contain hafnium in trace amounts.
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3.发明公开Procédé pour éviter l'extraction du technétium et/ou du rhénium, notamment lors de l'extraction de l'uranium et/ou du plutonium, par un solvant organique 失效一种用于防止锝和/或铼的提取，特别是铀和/或钚的提取用有机溶剂的方法。
公开(公告)号：EP0208586A1
公开(公告)日：1987-01-14
申请号：EP86401347.9
申请日：1986-06-19
CPC分类号： G21C19/46 , C01G25/003 , C01G27/003 , C01G47/003 , C01G56/001 , C22B3/0024 , C22B3/0025 , C22B3/0052 , C22B3/0068 , C22B60/026 , Y02P10/234 , Y02W30/883
摘要： Procédé pour extraire d'un élément chimique, tel que l'uranium ou le plutonium présent dans une solution aqueuse, contenant à la fois ledit élément, du technétium et/ou du rhénium et du zirconium et/ou du hafnium qui consiste à mettre la solution aqueuse en contact avec un solvant organique capable d'extraire ledit élément. Pour éviter l'extraction du technétium et/ou du rhénium avec ledit élément, on ajoute à la solution aqueuse un agent complexant du zirconium et/ou du hafnium en quantité suffisante pour complexer tout le zirconium et/ou le hafnium, cet agent étant soluble dans la solution aqueuse.
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公开(公告)号：EP1773720B1
公开(公告)日：2015-09-02
申请号：EP05788725.9
申请日：2005-07-07
申请人： AREVA NP
发明人： DELONS, Laurence , LAGARDE, Stéphane , FAVRE-REGUILLON, Alain , PELLET-ROSTAING, Stéphane , LEMAIRE, Marc , PORIEL, Ludovic
CPC分类号： C01G25/04 , C01G25/003 , C01G27/003 , C01G27/04
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5.发明公开Process for recovery of zirconium by solvent extraction 失效Verfahren zur Gewinnung von Zirkonium durch Solventextraktion。
公开(公告)号：EP0154448A2
公开(公告)日：1985-09-11
申请号：EP85301135.1
申请日：1985-02-20
IPC分类号： C22B34/14
CPC分类号： C22B3/0066 , C01G25/003 , C01G25/02 , C01G27/003 , C01G27/02 , C01P2006/80 , Y02P10/234
摘要： A process for the recovery of zirconium from an aqueous acid solution by solvent extraction is disclosed. The process includes contacting the aqueous acid solution, which may also contain titanium and other metallic impurities, with an organic solution of a water-insoluble organic solvent and a suitable dialkyl-organophosphinic acid whereby zirconium and hafnium are selectively extracted from the aqueous solution into the organic solution with only minor amounts of coextracted titanium and other metallic impurities. The zirconium and hafnium may be subsequently stripped from the pregnant organic solution by contacting the solution with an aqueous ammonium carbonate solution whereby the zirconium and hafnium are selectively extracted from the organic solution into the aqueous ammonium carbonate solution with only trace amounts of coextracted titanium and other metallic impurities. A high purity zirconium/hafnium oxide may subsequently be precipitated from the pregnant aqueous ammonium carbonate solution by a controlled heating process.
摘要翻译： 公开了通过溶剂萃取从酸性水溶液中回收锆的方法。 该方法包括使含有钛和其它金属杂质的酸性水溶液与水不溶性有机溶剂和合适的二烷基 - 有机膦酸的有机溶液接触，由此将锆和铪从水溶液中选择性提取到 只有少量共提取钛和其他金属杂质的有机溶液。 随后可以通过使该溶液与碳酸铵水溶液接触从而将锆和铪从有机溶液中剥离，由此锆和铪从有机溶液中有选择地提取到碳酸铵水溶液中，只用微量共提取的钛和其它 金属杂质。 随后可以通过受控的加热方法从怀孕的碳酸铵水溶液中沉淀出高纯度的锆/氧化铪。
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公开(公告)号：EP1807353A2
公开(公告)日：2007-07-18
申请号：EP05809106.7
申请日：2005-10-07
发明人： DELONS, Laurence , LAGARDE, Stéphane , PORIEL, Ludovic , LEMAIRE, Marc , FAVRE-REGUILLON, Alain , PELLET-ROSTAING, Stéphane
IPC分类号： C01G27/04
CPC分类号： C01G27/003 , B01J41/04 , C01G25/003 , C01G25/04 , C01G27/04
摘要： The invention concerns a method from separating zirconium and hafnium for a mixture of ZrCI4 and HfCI4 containing 3 wt. % or less of Hf based on Zr + Hf, the method including the following steps: 1) hydrolyzing a mixture of ZrCI4 and HfCI4 in an aqueous solution of strong inorganic acid, so as to form an aqueous solution having 7 to 12 moles of acid per liter; 2) passing the solution obtained at step 1) in an anion exchanging resin; 3) optionally eluting a fraction of said aqueous solution having 7 to 12 moles of acid per liter, enriched in hafnium; 4) removing the resin of the acid solution containing Zr and Hf; 5) passing in the resin an aqueous solution to detach the zirconium compounds fixed to the resin, and recovering a zirconium-enriched fraction.
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7.发明授权
公开(公告)号：EP0208586B1
公开(公告)日：1990-09-05
申请号：EP86401347.9
申请日：1986-06-19
CPC分类号： G21C19/46 , C01G25/003 , C01G27/003 , C01G47/003 , C01G56/001 , C22B3/0024 , C22B3/0025 , C22B3/0052 , C22B3/0068 , C22B60/026 , Y02P10/234 , Y02W30/883
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公开(公告)号：EP1773720A2
公开(公告)日：2007-04-18
申请号：EP05788725.9
申请日：2005-07-07
发明人： DELONS, Laurence , LAGARDE, Stéphane , FAVRE-REGUILLON, Alain , PELLET-ROSTAING, Stéphane , LEMAIRE, Marc , PORIEL, Ludovic
CPC分类号： C01G25/04 , C01G25/003 , C01G27/003 , C01G27/04
摘要： The invention concerns a method for separating hafnium and zirconium from a mixture containing ZrCl4 and HfCl4, the method comprising the following steps: 1) introducing the ZrCl4 and HfCl4 mixture in vapour form into a continuous extractive distillation column; 2) selectively absorbing ZrCl4 and HfCl4 vapours with an extraction solvent circulating counter-current relative to said vapours in the distillation column; 3) drawing a liquid or gaseous ZrCl4 and HfCl4 mixture enriched in ZrCl4; 4) drawing a liquid or gaseous ZrCl4 and HfCl4 mixture enriched in HfCl4; 5) hydrolyzing the mixture obtained at step 4) in an inorganic acid aqueous solution, so as to form an aqueous solution having 7 to 12 acid moles per liter; 6) passing the solution obtained at step 5) through an anion exchanging resin; 7) eluting and recovering a hafnium-enriched fraction.
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公开(公告)号：EP0142291B1
公开(公告)日：1987-07-15
申请号：EP84307170.5
申请日：1984-10-18
CPC分类号： C01G27/003 , C01G25/003 , C22B3/0021 , C22B3/22 , Y02P10/234
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公开(公告)号：EP0154448A3
公开(公告)日：1986-12-30
申请号：EP85301135
申请日：1985-02-20
CPC分类号： C22B3/0066 , C01G25/003 , C01G25/02 , C01G27/003 , C01G27/02 , C01P2006/80 , Y02P10/234
摘要： A process for the recovery of zirconium from an aqueous acid solution by solvent extraction is disclosed. The process includes contacting the aqueous acid solution, which may also contain titanium and other metallic impurities, with an organic solution of a water-insoluble organic solvent and a suitable dialkyl-organophosphinic acid whereby zirconium and hafnium are selectively extracted from the aqueous solution into the organic solution with only minor amounts of coextracted titanium and other metallic impurities. The zirconium and hafnium may be subsequently stripped from the pregnant organic solution by contacting the solution with an aqueous ammonium carbonate solution whereby the zirconium and hafnium are selectively extracted from the organic solution into the aqueous ammonium carbonate solution with only trace amounts of coextracted titanium and other metallic impurities. A high purity zirconium/hafnium oxide may subsequently be precipitated from the pregnant aqueous ammonium carbonate solution by a controlled heating process.
摘要翻译： 公开了通过溶剂萃取从酸性水溶液中回收锆的方法。 该方法包括使含有钛和其它金属杂质的酸性水溶液与水不溶性有机溶剂和合适的二烷基 - 有机膦酸的有机溶液接触，由此将锆和铪从水溶液中选择性提取到 只有少量共提取钛和其他金属杂质的有机溶液。 随后可以通过使该溶液与碳酸铵水溶液接触从而将锆和铪从有机溶液中剥离，由此锆和铪从有机溶液中有选择地提取到碳酸铵水溶液中，只用微量共提取的钛和其它 金属杂质。 随后可以通过受控的加热方法从怀孕的碳酸铵水溶液中沉淀出高纯度的锆/氧化铪。
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