用了子交换法分离富集稀土元素的研究

研究了用国产７３２阳离子交换树脂分离富订痕量烯土元素的情况,并对方法和树脂的选取,酸度的选择,干扰元素的排除,样品的回收等进行了讨论。     

稀土元素的分离技术

对目前稀土元素分离过程中几种常用的分离技术进行了综述,使用较多的是溶剂萃取法和离子交换法,而且新方法也在不断地出现。     

无机盐生产中锶钙分离

锶钙分离对于生产高纯锶盐及利用含有大量钙的单一锶矿、伴生锶矿或卤水锶矿具有重要意义.基于锶钙的一些基本性质,介绍并评价了沉淀法、溶剂萃取法、离子交换法等分离方法的研究现状和在无机盐工业中应用的情况.最后对上述几种主要分离方法的优缺点进行了比较,并对卤水锶矿中锶的利用进行了展望.     

用离子交换法分离富集稀土元素的研究

研究了用国产７３２阳离子交换树脂分离富集痕量稀土元素的情况,并对方法和树脂的选取,酸度的选择,干扰元素的排除,样品的回收等进行了讨论。     

溶剂萃取法分离钨、磷的研究

本文提出了一个用溶剂萃取方法分离钨、磷以制取高纯钨产品的过程,实验研究了最适宜的萃取条件,证实该过程适用于钨冶金工业中钨酸钠溶液的净化.     

稀土元素分离技术获重大突破

<正>本刊讯由包头市世博萃取装备有限公司、包头稀土研究院和内蒙古包钢稀土(集团)高科技股份有限公司合作完成的稀土离心萃取装备及工艺技术项目,近日在北京顺利通过了中国稀土行业协会和中国稀土学会组织的成果鉴定,标志着我国稀土萃取分离装备及工艺技术获得重大突破。依托该技术建成的年处理碳酸稀土5 000t的离心萃取分离生产线和1条年处理3 000t钕铁硼废料稀土回收生产线产     

试谈硝酸钾的开发

介绍了硝酸钾的性质和作为肥料的优点。阐述了其生产技术并分析各类工艺的优缺点。对硝酸钾产品开发应注意的问题和市场行情亦作调查分析。     

萃取技术在稀土分离科学中的应用及前景

本文扼要叙述了萃取技术在分离科学中的广泛应用，稀土萃取分离工艺（流程）的进展。特别对ＨＥＨ的氨化萃取工艺技术，分馏萃取“三出口”分离工艺技术、协同萃取分离方法等作了简要述评。     

重稀碱金属铯分离提取技术的研究进展

铯是稀有碱金属,在现代高科技领域具有广泛的应用前景。近年来,铯的研究与应用越来越引起人们的关注。综述了铯的用途以及提取分离技术研究的现状。分类论述了近年来国内外学者采用沉淀法、离子交换法和溶剂萃取法在铯元素分离和提取方面的研究进展,对所述技术的优缺点进行了探讨。认为离子交换法和萃取法应用于工业化生产最具发展前景,为铯资源分离提取的试验研究提供了综合信息。     

Behavior of Actinium,Alkaline, and Rare Earth Elements in Sr-Resin/Mineral Acid Systems

In this work, the interactions between the divalent alkaline earth elements (AEE) (Sr, Ba, Ra), the trivalent rare earth elements (REE) (Ce-Lu, Y), and Ac(III) with Sr-resin were investigated in the presence of HNO₃, HCl, HBr, HClO₄, and HPF₆. Distribution coefficients of these ions on the Sr-resin were determined under batch-loading conditions. Lastly, online column separations were performed to demonstrate the utility of these systems. Substantial differences in the behavior of the ions in solutions comprised of the five different acids were observed. These differences can partly be explained by a combination of ion exchange (primary) and extraction (solvation) mechanisms. From a practical point of view, the Sr-resin/HClO₄ or Sr-resin/HPF₆ systems were demonstrated to be effective for the separation and purification of the different groups of the elements.     

8000t/a稀土分离工艺

介绍了稀土的性质和应用；讨论了稀土的分离工艺。     

Ion Exchange Behavior of Selected Elements on Chelex 100 Resin

Abstract

Ion exchange behavior of some selected elements on Chelex 100 ion exchange resin in weakly acidic medium has been investigated. The acidity and the concentration of the supporting electrolyte have considerable influence on the sorption of metal cations by the ion exchanger. Column experiments have revealed that elution of cobalt and zinc in the definite pH range exhibits certain deviation compared to the other examined elements, resulting in doubly peaked elution curve. Apart from the commonly known cation (chelating) exchange function, under appropriate conditions Chelex 100 can also act as an anion exchanger. Ion exchange behavior of mercury in diluted hydrochloric acid medium is an illustration of amphoteric character of this resin. Two regions of pH can be distinguished, which correspond to the specified sorption mechanism of the metal by Chelex 100. In practical aspect, the use of Chelex 100 for the separation of trace amounts of several selected elements is demonstrated.     

无机盐生产中的锶钡分离

锶钡分离对于生产高纯锶、钡盐及利用高锶 钡矿或高钡锶矿具有重要意义。介绍、评论了沉淀、离子交换、溶剂萃取等方法的研究和在无机盐工业中应用的情况。     

现代分离技术在红霉素提取中的应用

综述了近年来国内外现代分离技术溶剂萃取法、膜分离技术、盐析沉淀法、大孔树脂吸附法及离子交换技术在红霉素分离提取领域的研究应用进展,并对这些现代分离技术的发展前景做了简要探讨。     

Modeling and Separation of Rare Earth Elements by Countercurrent Electromigration: A New Separation Column

ABSTRACT

The separation of a samarium (90%) and europium (10%) mixture in α-hydroxy isobutyric acid was performed in a new countercurrent electromigration system. The mobilities of these elements were estimated, and samarium of better than 99.9% purity was obtained. The equilibrium of multicoordinate complexes of these elements