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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Separation of Rare Earth Elements from Monazite via Sulfidation
Author(s) Caspar Stinn, Zachary Kenneth Adams, Vasu Kaker, Antoine Allanore
On-Site Speaker (Planned) Caspar Stinn
Abstract Scope Rare earth elements are critical for sustainability applications; yet their extraction, separation, and smelting remain environmentally and economically tedious. Conventional rare earth processing consists of a sequence of physical beneficiation, hydrometallurgical, and metallothermic or electrolytic processes to produce pure metals and alloys. Environmental impacts are concentrated in impurities management and material separation. Recently, sulfide-based separation chemistries have been shown to offer higher separation effectiveness than legacy hydrometallurgical methods at a fraction of the cost and energy usage. However, previous experimental studies have only employed synthetic feedstocks of mixed rare earth oxides or FeNdB magnets. Herein, we conduct rare earth element separation from monazite mineral using sulfidation. We explore the use of iron and alkaline earth compounds as separation additives to enable single stage separation of light and heavy rare earth elements and sequestration of normally occurring radioactive materials. We then explore vacuum thermal treatments for carbon-free rare earth alloy production.
Proceedings Inclusion? Planned:
Keywords Extraction and Processing, Pyrometallurgy, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

An Innovated Hydrometallurgical Process for Recoveries of Critical and Rare Metals from Copper Anode Slimes
Biosorption as a Vital Tool for Metal Recovery in Effluent Treatment: Review
Di-phenols Functionalized Chitosan as Selective Adsorbents for Extraction of Germanium
Eutectic Freeze Crystallization for Recovery of Cobalt Sulfate in the Recycling of Li-ion Batteries
Experimental Investigation of Liquid Metal Leaching for Rare Earth Magnet Recycling
Extraction of Tungsten, Yttrium and Uranium from Tantalum – Niobium Ore from Muchinga Province in Zambia
Formation Rates of Different Zinc Oxide Crystal Morphologies Associated with the Recycling of Zn-ion Batteries
Leaching of Neodymium from Recycled NdFeB Magnet Powders Using Citric Acid
New Insights on Titanium(IV) Speciation to Improve the Purification of Concentrated Phosphoric Acid
Production of High-purity Mg Metal from Various MgO Resources through a Novel Electrolytic Process Using a Cu Cathode and Vacuum Distillation
Production of Micro-sized Metallic Tungsten Particles from Natural Wolframite and Scheelite via Sulfide Chemistry
Purification of an Indigenous Barite Mineral for Sustainability of Operation in the Nigerian Oil and Gas Industries
Pyrolysis of Waste Printed Circuit Boards: Optimization Using Response Surface Methodology and Characterization of Solid Product
Rare Earth Elements Extraction from an Ionic Clay from South America
Recovery and Separation of Vanadium and Tungsten from Spent SCR Catalyst by Hydrometallurgical/ Hybrid Routes
Recovery of Copper Metal from Discarded Printed Circuit Boards (PCBs) by Hydro and Electro Metallurgical Processes
Recycling of Copper and Gold from Waste Printed Circuit Boards by Leaching Followed by Solvent Extraction
Recycling of Rare Earth Elements (REEs) from Scrap Nd-Fe-B Magnets
Removal of Selenium from Chloride Media using Bioadsorbent
Separation of Rare Earth Elements from Monazite via Sulfidation
Studies on the Hydrometallurgical Recovery of Metals from Used and End of Life PCBs
Tantalum Recovery Technique for Recycling of Tantalum Coated Composite Materials
The Behaviour of Minor Metals in BOF Slag Under Different Additives

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