公开(公告)号：US5618502A

公开(公告)日：1997-04-08

申请号：US502995

申请日：1995-07-17

申请人： Charles H. Byers ,  Warren G. Sisson ,  Thomas S. Snyder ,  Richard J. Beleski ,  Umesh P. Nayak ,  Timothy L. Francis

发明人： Charles H. Byers ,  Warren G. Sisson ,  Thomas S. Snyder ,  Richard J. Beleski ,  Umesh P. Nayak ,  Timothy L. Francis

IPC分类号： C01G27/00 ,  B01D15/02 ,  B01J41/20 ,  C01G25/00 ,  C22B3/42 ,  C22B34/14 ,  G01N30/02 ,  G01N30/58

CPC分类号： C22B34/14 ,  B01J41/20 ,  C01G25/003 ,  C22B3/42 ,  B01D2215/022 ,  G01N30/02 ,  G01N30/58 ,  Y02P10/234

摘要： A method and system for improved continuous ion exchange chromatographic elemental separations of zirconium and hafnium and also for isotopic separations thereof from crude zirconium minerals by using zirconium (also containing hafnium) sulfate feedstock solutions, sulfate eluant solutions, anionic exchange resins, and reduced ion exchange column operating temperatures. The method and system of the invention provides sulfate feedstock solutions by completely converting the carbochlorination products of zircon sand to sulfate solutions prior to feeding to the ion exchange chromatographic column. The method and system of the invention is performed in a continuously operating continuous annular chromatograph (CAC). Nuclear grade substantially purified zirconium and hafnium metals are produced.

摘要翻译： 通过使用锆（还含有铪）硫酸盐原料溶液，硫酸盐洗脱剂溶液，阴离子交换树脂和还原离子交换，改进锆和铪的连续离子交换色谱分离的方法和系统，以及与粗锆矿物的同位素分离 色谱柱工作温度。 本发明的方法和系统通过在送入离子交换色谱柱之前将锆石砂的碳氯化产物完全转化成硫酸盐溶液来提供硫酸盐原料溶液。 本发明的方法和系统在连续操作的连续环状色谱仪（CAC）中进行。 生产核级基本纯化的锆和铪金属。

公开(公告)号：US5762890A

公开(公告)日：1998-06-09

申请号：US733893

申请日：1996-10-18

申请人： Charles H. Byers ,  Warren G. Sisson ,  Thomas S. Snyder ,  Richard J. Beleski ,  Timothy L. Francis ,  Umesh P. Nayak

发明人： Charles H. Byers ,  Warren G. Sisson ,  Thomas S. Snyder ,  Richard J. Beleski ,  Timothy L. Francis ,  Umesh P. Nayak

IPC分类号： G01N30/60 ,  B01D15/08 ,  B01D59/30 ,  B01J39/04 ,  B01J39/26 ,  B01J41/04 ,  B01J41/20 ,  C22B3/42 ,  C22B3/44 ,  C22B34/14 ,  G01N30/58 ,  G01N30/88 ,  C01G25/00 ,  C01G27/00

CPC分类号： B01D59/30 ,  B01D15/1892 ,  B01D15/361 ,  C22B3/44 ,  C22B34/14 ,  G01N30/58 ,  Y02P10/234

摘要： A method and system for improved ion exchange chromatographic elemental separations of zirconium and hafnium elements and also, if desired, separations of the isotopes thereof from crude zirconium minerals by using improved crude aqueous zirconium (also containing hafnium) chloride feedstock solutions, aqueous chloride eluant solutions, cationic or anionic exchange resins, and reduced ion exchange chromatographic operating temperatures. The method and system of the invention provides improved crude aqueous zirconium chloride feedstock solutions by carbochlorinating zircon sand and hydrolyzing and dissolving the chlorination products under controlled conditions to substantially eliminate cross-polymerization of the carbochlorination products, which undesirably yield inseparable zirconium and hafnium co-polymers during hydrolysis, by inhibiting the hydrolysis exotherm and/or the free acid generation during hydrolysis.

摘要翻译： 用于改进锆和铪元素的离子交换色谱分离的方法和系统，并且如果需要，通过使用改进的粗制水性锆（也含有铪）氯化物原料溶液，氯化铵水溶液溶液，将其与粗锆矿物分离 ，阳离子或阴离子交换树脂，以及降低的离子交换色谱操作温度。 本发明的方法和系统通过碳氢化锆石砂提供改进的粗氯化锆原料溶液，并在受控条件下水解和溶解氯化产物以基本上消除碳氯化产物的交联聚合，这不利地产生不可分离的锆和铪共聚物 在水解期间，通过抑制水解过程中的水解放热和/或游离酸的产生。

公开(公告)号：US5437795A

公开(公告)日：1995-08-01

申请号：US264810

申请日：1994-06-23

申请人： Thomas S. Snyder ,  Steven H. Peterson ,  Umesh P. Nayak ,  Richard J. Beleski

发明人： Thomas S. Snyder ,  Steven H. Peterson ,  Umesh P. Nayak ,  Richard J. Beleski

IPC分类号： B01D59/30 ,  G01N30/58 ,  B01D15/08

CPC分类号： B01D59/30 ,  G01N30/58

摘要： A process for the partial or complete simultaneous separation of isotopes of erbium, especially high thermal neutron capture cross-section erbium isotopes, using continuous, steady-state, chromatography in which an ion exchange resin is the stationary phase, an aqueous solution of ions based on a mixture of erbium isotopes is the feed phase, and an aqueous acid eluant solution is the mobile phase. The process involves the mobile phase eluting or desorbing the erbium isotopic solute adsorbed on the stationary phase under conditions such that each of the various naturally occurring isotopes of erbium is primarily eluted in an elution volume distinct from the elution volumes of the other isotopes. In a preferred embodiment, the conditions are such that at least one of the elution volumes contains essentially only one isotope of erbium. The process is preferably conducted in a continuous, steady-state manner, and in particular is preferably conducted in a continuous annular chromatograph (CAC).

摘要翻译： 使用其中离子交换树脂为固定相的连续稳态色谱法，部分或完全同时分离铒的同位素，特别是高热中子捕获截面铒同位素的方法，基于离子的水溶液 在铒同位素的混合物上是进料相，酸性洗脱剂水溶液是流动相。 该方法包括流动相洗脱或解吸吸附在固定相上的铒同位素溶质，其条件是使得铒的各种天然存在的各种同位素主要以与其它同位素的洗脱体积不同的洗脱体积洗脱。 在优选的实施方案中，条件使得洗脱体积中的至少一个基本上仅含有铒的一个同位素。 该方法优选以连续的稳态方式进行，特别优选在连续环状色谱（CAC）中进行。