公开(公告)号：US5176878A

公开(公告)日：1993-01-05

申请号：US355478

申请日：1989-05-23

申请人： Lawrence E. Sarbeck ,  David R. Lee ,  Lawrence J. Jacoby ,  John C. Haygarth ,  Charles T. Goodwin ,  William A. Crocker

发明人： Lawrence E. Sarbeck ,  David R. Lee ,  Lawrence J. Jacoby ,  John C. Haygarth ,  Charles T. Goodwin ,  William A. Crocker

IPC分类号： C22B3/26 ,  C22B3/34 ,  C22B34/14

CPC分类号： C22B3/0031 ,  C22B3/0021 ,  C22B34/14 ,  Y02P10/234

摘要： A process for separating zirconium values from hafnium values wherein an aqueous solution of ZrCl.sub.4 and HfCl.sub.4 is contacted with NH.sub.4 SCN, feeding the resultant solution into a solvent extraction system containing aqueous HCl and MIBK, separating off the solvent phase containing MIBK, HSCN, hafnium thiocyanate complex, and any decomposition products of HSCN to leave the aqueous phase raffinate containing NH.sub.4 Cl, zirconium oxide-chloride and low concentrations of HSCN, scrubbing the hafnium values from the separated solvent phase, treating the scrubbed solvent phase containing MIBK and HSCN with NH.sub.4 OH to convert the HSCN to NH.sub.4 SCN, separating the NH.sub.4 SCN from the treated solvent phase, treating the separated solvent phase to remove essentially all thiazolines, and scrubbing residual HSCN from the raffinate with the desulfurized solvent phase.

摘要翻译： 将锆值与铪值分离的方法，其中ZrCl 4和HfCl 4的水溶液与NH 4 SCN接触，将所得溶液进料到含有HCl水溶液和MIBK的溶剂萃取系统中，从含有MIBK，HSCN，硫氰酸铪络合物的溶剂相分离出来 ，以及HSCN的任何分解产物以离开含有NH 4 Cl，氧化锆 - 氯化物和低浓度HSCN的水相萃余液，从分离的溶剂相洗涤铪值，用NH 4 OH处理含有MIBK和HSCN的洗涤溶剂相，以转化 将HSCN与NH4SCN分离，将NH 4 SCN与处理的溶剂相分离，处理分离的溶剂相以除去基本上所有的噻唑啉，并用脱硫溶剂相从残液中洗涤剩余的HSCN。