用TOA和TOMAC在苯中萃取加锡氯溶液中的铑和钌

Resources Processing Pub Date : 2021-01-01 DOI:10.4144/rpsj.68.57

K. Fujii, Koudai Nagano, Tasuma Suzuki, Masakazu Niinae

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引用次数: 1

摘要

由于其优异的物理和化学性能，对PGMs的需求逐年增加。此外，为了满足需求，从二次资源中开发高效的铂族金属回收工艺非常重要。溶剂萃取法与传统的沉淀法和精馏法相比，具有许多优点。从氯化物溶液中萃取Rh和Ru的效率很低。在氯化物溶液中加入Sn(II)可以提高Rh和Ru的萃取效率。本研究用苯稀释的三辛胺(TOA)和三辛甲基氯化铵(TOMAC)从盐酸溶液中提取Rh和Ru，以阐明Sn(II)的加入对Rh和Ru的提取和Rh和Ru的剥离的影响。添加Sn(II)对Rh和Ru的萃取有效，用氢氧化钠配制的亚硝酸钠溶液对Rh和Ru的溶出有效。

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Solvent Extraction of Rhodium and Ruthenium from Chloride Solutions added Tin(II) with TOA and TOMAC in Benzene

The demand for PGMs is increasing year by year due to their excellent physical and chemical properties. Moreover, in order to meet the demand, it is important to develop a highly efficient recovery process of PGMs from secondary resources. Solvent extraction applied to refining process for PGMs offers several advantages over the traditional pre cipitation methods and distillation. Solvent extraction efficiency of Rh and Ru from chloride solutions is very low. How ever, the extraction efficiency of Rh and Ru can be improved by adding Sn(II) to chloride solutions. In the present study, the extraction of Rh and Ru from hydrochloric acid solutions with tri-n-octylamine (TOA) and trioctyl methyl ammonium chloride (TOMAC) diluted with benzene were tested to clarify the effect of addition of Sn(II) on the extraction of Rh and Ru and stripping of Rh and Ru. The addition of Sn(II) was effective for the extraction of Rh and Ru and the stripping of Rh and Ru with solutions of sodium nitrite prepared with sodium hydoxide was effective.

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Resources Processing

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