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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Solvent-free pyrometallurgical beneficiation of rare earth elements with controlled separation of radionuclides.
Author(s) Patrik K. Johansson, Xueli Zheng, Adam Jew, Leora Dresselhaus-Marais
On-Site Speaker (Planned) Patrik K. Johansson
Abstract Scope Establishing a diverse supply chain for rare earth element (REE) extraction and beneficiation remains a significant challenge that requires disruptive new approaches. We propose a solvent-free pyrometallurgical treatment to circumvent the hydrometallurgical treatments that generate vast amounts of toxic liquid waste today. Using laser heating and in situ XRD, we observe rapid thermal decomposition of carbonatite ores in seconds to form primarily oxides. Ex situ XRF elemental mapping of the samples after longer (minutes) processing at extreme temperatures (>2000˚C) shows that the rare earth oxides separate from the gangue materials via settlement, volatilization of gangue materials, and an opportunity for controlled separation of radionuclides via additives. Our results indicate the feasibility and opportunities for solvent-free REE beneficiation by pyrometallurgy.
Proceedings Inclusion? Planned:
Keywords Pyrometallurgy, Extraction and Processing, Characterization

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Process for Rhenium Recovery from Superalloy Material
Advancing Lithium Recovery: Evaluation of Electrodialysis, Capacitive Deionization, and a novel Hybrid Electrochemical System
Alkaline Leaching of Uranium from an Indigenous Boltwoodite ore for Nuclear Fuel Production
An Integrated Strategy and Process for Recovery of Germanium from Metallurgical By-Products and Waste Streams
Applying Fundamentals and New Approaches to Greatly Enhance Rare Earth Elements Separations
Comparative Study of Alkali Leaching and Microwave-Assisted Alkali Roasting for Rare Earth Recovery from Vietnamese Bastnaesite Concentrate
Critical Material Recovery from Bauxite Residue
Design Criteria for High Temperature Rare Earth Liquid Metal Processing Equipment
Effects of Aqueous Complexing Agents on the Selective Adsorption of Rare Earth Elements by Functionalized Nano Powders
Efficient recovery of elemental selenium from seleni-um-containing wastewater via electrolysis
Extraction of Rare Earth Elements from Coal Ash of Thermal Power Plant
Hydrometallurgical extraction of rare earths from nitric acid leached solution of apatite using mixed organophosphorus extractant
Hydrometallurgical processing of discarded PCBs to recover precious and base metals
Hydrometallurgical Processing of Waste Fluorescent Lamps Phosphor Dust for Rare Earth Recovery
Hydrometallurgical recycling of exhausted iron-molybdate catalysts using ammoniacal leaching process
Implementation of glycine and phosphate as organic ligands in the presence of thiourea to reduce copper and iron interference in silver from tailings
Investigation of A New Magnesiothermic Process for the Reduction of Nd2O3 and Production of Nd Metal. Samantha Sorensen, Munro Alley, Pei Sun, and Z. Zak Fang Dept of Materials Science and Engineering, University of Utah
Leaching Kinetics with modelling for the dissolution of Ni, Sn and Fe from scrap alloy
Neodymium and cobalt co-deposition using urea and choline chloride ionic liquid
Neodymium metal production through metallothermic reduction
Optimized Separation of Lithium from Montebrasite Ore via Sulfuric Acid Leaching and Thermal Pretreatment: A Response Surface Methodology Approach
Oxidation kinetics of hydrogenated NdFeB magnet
Phytoextraction of Critical Metals from Coal Fly Ash: A Green Extraction Approach
Precious and rare metals recovery from end-of-life products
Processing of secondaries to reclaim rare earth metals (REMs): A review
Rare and Critical Metals (In & Sn) Extraction from Discarded Display Devices
Recovery of lithium from battery recycling wastewater using electrodialysis
Recovery of Tantalum from Tantalum Capacitors of Printed Circuit Boards: A Review
Recycling of dried chargeable batteries to recover critical metals (Li, Co, Ni, Mn) for circular economy
Recycling of end-of-life NdFeB magnets using sulfation roasting, water leaching, and precipitation
Recycling of LiFePO4 Batteries via Solar-Aluminothermic Reduction: Towards a Sustainable Practice of Pyrometallurgical-Based Recycling
Room Temperature Lithium Metal Electrolysis
Secondary Production of Tantalum from Additive Manufacturing Swarf
Selective Adsorption of Rare Earth Elements Using Engineered Mesoporous Materials: Mechanistic Insights into Size-Dependent Separation
Selective dissolution of rare earths from NdFeB magnets by aeration leaching in Sulfuric acid
Selective Separation of Rare Earth Elements from Aqueous Solution
Separation and Purification of Rare Earth Elements Through Adsorption by Functionalized Low-Cost Materials
Solvent-free pyrometallurgical beneficiation of rare earth elements with controlled separation of radionuclides.
Thermal Measurement of Li-ion Battery Cathodes: Essential Data for Thermodynamic Modelling and High-Temperature Experimental Design
Unlocking the Development of a Domestic Lithium Industry in the United States
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