发明名称 Process for separating zirconium and hafnium
摘要 The present invention provides a new process for separating zirconium and hafnium compounds, in particular to remove traces of zirconium compounds from hafnium compounds, using fractional crystallisation, as well as hafnium compounds obtainable in accordance with this process.
申请公布号 US7635396(B2) 申请公布日期 2009.12.22
申请号 US20070743175 申请日期 2007.05.02
申请人 H.C. STARCK GMBH 发明人 REUTER KNUD;PASSING GERD;KIRCHMEYER STEPHAN
分类号 C22B34/14;C07F7/00 主分类号 C22B34/14
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