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PRODUCTION OF COLUMBIUM NIOBIUM OXYFLUORIDE AND CONVERSIONTO COLUMBIUM NIOBIUM OXIDE
PRODUCTION OF COLUMBIUM NIOBIUM OXYFLUORIDE AND CONVERSIONTO COLUMBIUM NIOBIUM OXIDE
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机译:氧化铌铌的生产及转化为氧化铌铌
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摘要
Process for obtaining niobium from a niobium-containing aqueous hydrofluoric acid solution. The niobium-containing solution is heated with stirring, resulting in evaporation and hydrolysis and formation of a slurry from which niobium oxyfluoride can be separated off and recovered. This can be followed by a process for the conversion of niobium oxyfluoride (NbO2F) into niobium oxide (Nb2O5) in which NbO2F is heated under selected pyrohydrolysis conditions.
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