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公开(公告)号：EP1633896A1
公开(公告)日：2006-03-15
申请号：EP03781999.2
申请日：2003-12-19
发明人： LLOYD, Robert
CPC分类号： C01B9/08 , C01G23/0475 , C22B34/1213 , C22B34/1245
摘要： The invention relates to a process for purifying inorganic materials by treating the materials with a solution of hydrogen fluoride in aqueous hydrofluorosilicic acid. The process involves treating an inorganic material containing at least two species, to at least partially separate a first species contained in the material from a second species contained in the material, and comprises treating the material with a fluorine acid solution comprising aqueous hydrofluorosilicic acid and hydrofluoric acid (HF), such that the first species is converted to a product selected from the group consisting of a fluoride, a fluorosilicate and mixtures thereof, and such that the second species is at least partly unreacted, and separating the second species from the product.
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公开(公告)号：EP1633896A4
公开(公告)日：2007-04-18
申请号：EP03781999
申请日：2003-12-19
发明人： LLOYD ROBERT
IPC分类号： C22B3/06 , C01B9/08 , C01G23/047 , C22B3/00 , C22B34/12
CPC分类号： C01B9/08 , C01G23/0475 , C22B34/1213 , C22B34/1245
摘要： The invention relates to a process for purifying inorganic materials by treating the materials with a solution of hydrogen fluoride in aqueous hydrofluorosilicic acid. The process involves treating an inorganic material containing at least two species, to at least partially separate a first species contained in the material from a second species contained in the material, and comprises treating the material with a fluorine acid solution comprising aqueous hydrofluorosilicic acid and hydrofluoric acid (HF), such that the first species is converted to a product selected from the group consisting of a fluoride, a fluorosilicate and mixtures thereof, and such that the second species is at least partly unreacted, and separating the second species from the product.
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