Search for dissertations about: "rare earth metals"
Showing result 1 - 5 of 47 swedish dissertations containing the words rare earth metals.
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1. Leaching and solvent extraction of rare earth metals from fluorescent lamp waste
Abstract : With the rapid advancement of technology, the demand for elements such as rare earth metals (REMs) has increased considerably during the last decade. Many countries are facing problems securing sustainable supplies, a fact acknowledged in many publications. READ MORE
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2. Modeling and Optimization of Rare Earth Element Chromatography
Abstract : The Rare Earth Elements are a group of metals, that are of growing technical and economical importance. Current separation techniques can be detrimental to the environment, and a clean technology for separation has been devised, based on analytical chromatography of the REEs. READ MORE
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3. Recovery of Rare Earth Elements from an Apatite Concentrate
Abstract : Rare earth elements (REE) are a group of 17 elements including lanthanides, yttrium and scandium; which are found in a variety of classes of minerals worldwide. The criticality of the application, lack of high grade and economically feasible REE resources and a monopolistic supply situation has raised significant attention in recovery of these metals from low grade ores and waste materials. READ MORE
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4. Microbially mediated formation of birnessite-type manganese oxides and subsequent incorporation of rare earth elements, Ytterby mine, Sweden
Abstract : Microbes exert extensive control on redox element cycles. They participate directly orindirectly in the concentration and fractionation of elements by influencing the partitioningbetween soluble and insoluble species. READ MORE
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5. Rare Earth Metal–Free Permanent Magnet Generators
Abstract : Permanent magnet (PM) synchronous generators (SGs) are used in renewable energy production. The preferred PM material is neodymium-iron-boron (NdFeB), which has very high performance and, until recently, low cost. READ MORE