Search for dissertations about: "scandium extraction"
Showing result 1 - 5 of 6 swedish dissertations containing the words scandium extraction.
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1. Recovery of Scandium using Antisolvent Crystallization in the Valorization of Scandium-containing Waste Streams
Abstract : Scandium is widely dispersed in the earth’s crust and is rarely concentrated in ores, and a viable option to guarantee a secure supply of scandium is to recover the metal from waste streams of other mining and metallurgical facilities. The valorization of such streams to recover metals of value is a prerequisite to alleviate the global shortages of scandium and other rare earth elements. READ MORE
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2. Hybrid nanoadsorbents for extraction and separation of rare earth elements in solution
Abstract : Rare Earth Elements (REE) are a group of 17 metals (those known as lanthanides plus Ytrium and Scandium), which are increasingly important for many emerging modern applications. This work is focused on the development of high performance new magnetic silica based nanoadsorbents which are surface functionalized for efficient uptake and separation of REE in solution. 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. Robust Multi-objective Optimization of Rare Earth Element Chromatography
Abstract : Rare earth elements comprise the metallic elements known as lanthanides as well as scandium and yttrium. They are extensively used in modern technological industries and are considered as strategic commodities in many countries. READ MORE
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5. Environmental Considerations in the Zero-waste Valorisation of Bauxite Residue : A Life Cycle Perspective
Abstract : Bauxite residue, also known as red mud, is produced in large quantities as a result of alumina refining (the first stage in aluminium production), and is one of the world’s most abundant and important industrial wastes. As demand for aluminium continues to increase and space to store this residue diminishes, the potential to utilise bauxite residue as a secondary resource is increasingly being considered by the alumina industry. READ MORE