A process for the extraction of rare earth elements, including yttrium, from a rare earth element-bearing ore or concentrate, comprising the steps of leaching the rare earth element-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a...
ExtractionMixed Rare Earth OxideFoxtrotThe Search Minerals Foxtrot project in Labrador is a surface deposit enriched in the highly sought after heavy rare earth elements. Early metallurgical work investigated beneficiation of the rare earth content of the Foxtrot resource using flotation, gravity ...
Rare-earth element extraction from geothermal brine using magnetic core-shell nanoparticles-techno-economic analysis Rare earth elements (REEs) are critical materials having a wide variety of applications such as generating and storing renewable energy. Extracting rare ea... J Liu,PF Martin,BP Mc...
The mixed rare earths from this process can be treated by tributyl phosphate (TBP) extraction to separate the individual rare earth elements of which ... B Weaver,KB Brown,DJ Crouse,... - 《Office of Scientific & Technical Information Technical Reports》 被引量: 8发表: 1963年 加载更多来源...
Rare earth element demand is expected to increase, as rare earth elements are heavily used in all these industries (US DOE, 2011). REEs are often found in geothermal fluids (Johannesson, 2006). A geothermal fluid warmed by the earth’s heat flows towards the earth’s surface where the ...
In an article on rare earth elements (REE) we posted earlier this year, it was noted that “the 15 lanthanides are very similar chemically and, as such, are difficult to separate using traditional solvent extraction technologies. While this can be done, it is a very expensive process involvin...
Rare earth elements (REEs) are a group of fifteen chemical elements in the periodic table. They are 15 lanthanides besides (scandium and yttrium). These elements are commonly found in the same mineral assemblages because of similar physical and chemical properties. REEs are critical for several hi...
Finally, separating RE using solvent extraction is considered the most practical, efficient, and economical way to obtain individual rare earth elements of high purity [172]. Several chemical reagents with extraction properties can be used in this process, e.g., 2-ethyl(hexyl)phosphoric acid-mono...
The differences in chemical activity between Fe, impurities and rare earth should be mainly responsible for the selective fluorination process. The obtained fluorides can be subsequently processed with molten salt electrolysis for the direct production of Al–Nd based alloy. 展开 关键词: NdFeB scrap ...
we have experimentally determined the recovery ratios of the rare earth elements in our method using a closed-loop acid process. This ratio is approximately 50%, as compared to the near-full recovery obtained in one-shot extraction methods. While this recovery ratio is rather low at the present...