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首页> 外文会议>International Symposium on East Asian Resources Recycling Technology（EARTH 2005); 20051109-15; Beijing(CN) >Separation and Purification of Valuable Metals by Solvent Extraction with Karr Column
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Separation and Purification of Valuable Metals by Solvent Extraction with Karr Column

机译：卡尔色谱柱溶剂萃取法分离纯化贵重金属

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摘要

In this study, the separation of samarium to neodymium with Karr column was investigated. Separation properties of Sm/Nd binary system was estimated with experimental parameters such as flow rate, initial pH of aqueous phase, saponification of HEH[EHP] in organic phase and agitation speed. The extraction rate and distribution coefficient increased with increasing initial pH of aqueous phase at 16.5 ml/min(retention time 10 minute) of flow rate of organic and aqueous phase, and equilibrium pH of aqueous phase after extraction was maintained at 1.5 by saponified HEH[EHP]. In addition, the extraction rate and distribution coefficient were drastically increased with increasing saponification degree of PC88A and agitation speed, and optimal saponification degree was 40%. Extraction rate of Nd and Sm was 19.6% and 72.5% respectively at retention time 10 minute, initial pH 1, saponification degree 40% and agitation speed 120 rpm.
机译：在这项研究中，研究了用Karr柱将the分离为钕的方法。利用流速，水相初始pH，有机相中HEH [EHP]的皂化和搅拌速度等实验参数估算了Sm / Nd二元体系的分离性能。随着有机相和水相流速的增加（16.5 ml / min，保留时间10分钟），随着水相初始pH值的增加，萃取率和分布系数也随之增加，皂化的HEH将萃取后的水相平衡pH维持在1.5。 EHP]。另外，随着PC88A皂化度和搅拌速度的增加，提取率和分配系数急剧增加，最佳皂化度为40％。保留时间10分钟，初始pH值为1，皂化度为40％，搅拌速度为120 rpm时，Nd和Sm的萃取率分别为19.6％和72.5％。

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