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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Scandium: Leaching and Extraction Chemistry
Author(s) Dag . Eriksen
On-Site Speaker (Planned) Dag . Eriksen
Abstract Scope One of the elements considered as key elements in the green economy is scandium. Scandium (Sc) is a rare earth element and as such, it is not very rare, but the concentration of it is always low making it a challenge to produce scandium at low cost. Compared to the other rare earth elements (REE), Sc3+ is a much smaller ion giving it properties closer to Al3+, Fe3+ and Zr4+. We therefore often do not find Sc together with the other REE, but instead in titanium-, aluminium- and uranium containing minerals. Processes involving Sc-separation are different from the usual REE-processes. Scandium is a critical metal as it is needed, but the market is not working properly. Exploitation of the mineral davidite is used as an example of small deposits to be utilized through green mining whereas other large operations like recovery from bauxite residues (red mud) are considered for comparison.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Application of Eutectic Freeze Crystallization in Recycling of Li-ion Batteries
Circular Economy for Rare Earths: What are the Different Strategies, Challenges, and Opportunities?
Developed Commercial Processes to Recover Au, Ag, Pt and Pd from E-waste.
Effect of Synthesis Method on the Electrochemical Performance of LiNixMnCo1-x-yO2 (NMC) Cathode for Li-ion Batteries: A Review
Environmental Aspects of the Electrochemical Recovery of Tellurium by Electrochemical Deposition-redox Replacement (EDRR)
Environmentally Friendly Solid Phase Extraction of Critical Materials and REE from Unconventional Sources
Experimental Determination of Liquidus Temperature and Phase Equilibria of the CaO-Al2O3-SiO2-Na2O Slag System Relevant to E-waste Smelting
Extraction Chromatography for Separation of Rare Earth Elements
Extraction of Platinum Group Metals from Spent Catalyst Material by a Novel Pyro-metallurgical Process
Extraction of Rare Earth Metals: The New Thermodynamic Considerations towards Process Hydrometallurgy
Extraction of Zn, Ga, Ge and In from Zinc Plant Residues
How to Prepare Future Generations for the Challenges in the Raw Materials Sector
Innovative Reactors for Recovery of Rare Earth Elements (REE)
Introductory Comments: Rare Metal Extraction & Processing
Lithium Adsorption Mechanism for Li2TiO3
Preparation of High-grade Ammonium Metatungstate (AMT) as Precursor for Industrial Tungsten Catalyst
Rare Earth Elements Extraction from Coal Waste Using Biooxidation Approach
Recovery of Rare Earth Elements from Recycled Hard Disk Drive Mixed Steel and Magnet Scrap
Recovery of Valuable Metals from End-of-life Lithium-ion Battery Using Electrodialysis
Recycling of Rare Earths from Neodymium Magnets Using Focused Infrared and Solid Phase Extraction
Rethinking Mineral Processing and Extractive Metallurgy Approaches to Ensure a Sustainable Supply of High-tech and Critical Raw Materials
Scandium Extraction from Bauxite Residue Using Sulfuric Acid and a Composite Extractant-enhanced Ion-exchange Polymer Resin
Scandium: Leaching and Extraction Chemistry
Scenarios of Future Lithium Use, 2021-2040
Selective Separation of Co and Ni from REE in Recycling
Sodium Metal from Sulfate
Study of the Recovery of Rare Earth Elements from Ion Adsorption Clays through Perolation Leaching Processes
Study on the Enhancement of Iron Removal in the Becher Aeration by a Novel Tubular Reactor
Study on the Production of Lithium by Aluminothermic Reduction Method
Supercritical Extraction of Neodymium from NdFeB Magnet Using Organophosphorus Ligands
The Importance of Spodumene Decrepitation on the Lithium Sulfate Extraction
The Italian National Research Council Operations within the EIT Raw Materials Framework
Tool and Workflow for Systematic Design of Reactive Extraction for Separation and Purification of Valuable Components
Understanding the Feasibility for Secondary and by Product Sources to Supply Rare Earth Metals
Uranium and Thorium Removal from Rare Earth Sulfate Solutions by Ion Exchange and Solvent Extraction

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