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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title The Importance of Spodumene Decrepitation on the Lithium Sulfate Extraction
Author(s) Colin Dessemond, Gervais Soucy
On-Site Speaker (Planned) Gervais Soucy
Abstract Scope Since lithium-rich minerals regained market shares, spodumene has become one of the most important sources of lithium worldwide. Its theoretical Li content of 8 wt% and the specific thermal treatment and lithium extraction process known since 1950 make it a perfect candidate for industrial projects. However, it has been proven that the known α and β forms are not the only ones involved in this process. An elusive third phase, γ-spodumene, exists and is a non-negligible phase of the spodumene system. This phase has been specifically studied to determine that it has a metastable character that can be shown via thermodynamic calculations, that it is formed regardless of temperature treatment up to 1050C and finally that it has a significantly negative impact on lithium extraction from 10 wt% and above. Therefore, γ-spodumene can not be ignored when processing α-spodumene as it can lead to decreased lithium extraction efficiencies.
Proceedings Inclusion? Planned:
Keywords Process Technology, Extraction and Processing, Hydrometallurgy


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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
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Extraction of Rare Earth Metals: The New Thermodynamic Considerations towards Process Hydrometallurgy
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How to Prepare Future Generations for the Challenges in the Raw Materials Sector
Innovative Reactors for Recovery of Rare Earth Elements (REE)
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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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