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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Extraction of Tungsten, Yttrium and Uranium from Tantalum – Niobium Ore from Muchinga Province in Zambia
Author(s) Douglas Mazwi Musowoya, Yotamu Hara, Fredrick Chilese, Janet Mundundu, Stephen Parirenyatwa
On-Site Speaker (Planned) Douglas Mazwi Musowoya
Abstract Scope A clean method of extracting tungsten, yttrium and uranium from tantalum - niobium ore located in the Muchinga province of Zambia has been developed. Tungsten is selectively extracted by roasting with alkaline at 700 and 750 degrees celcius followed by leaching in water to solubilize alkaline tungstate. The alkaline leach residue is cured with sulphuric acid to sulphate uranium and yttrium which are then leached out in acidic media. The effects of sulphation temperature, time and particle size were studied. Yttrium was recovered from leach solution via precipitation with oxalic acid in which yttrium oxalate with purity of more than 99 wt% was obtained. Uranium was recovered from the leach solution through precipitation with sodium hydroxide. Extraction of tungsten, yttrium and uranium from the material concentrated tantalum oxide by two times. A process flowsheet was developed based on optimised test works.
Proceedings Inclusion? Planned:
Keywords Extraction and Processing, Recycling and Secondary Recovery,

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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
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Production of Micro-sized Metallic Tungsten Particles from Natural Wolframite and Scheelite via Sulfide Chemistry
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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
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