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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Stored Renewable Energy in Coal
Presentation Title Extraction and Production of Rare Earth Elements from Coal-Seam Bedrock and Caprock
Author(s) John Gordon
On-Site Speaker (Planned) John Gordon
Abstract Scope Rare earth elements (REE) required in modern technological products are found in shale rocks above and below coal seams. Often during the process of mining coal, shale rock adjacent to the seam inadvertently is removed then diverted to landfill sites. Ecologically sound and potentially economic methods of extracting the REEs from these landfills are proposed. Methods include utilizing geomemembrane barrier beneath the landfill site, ion exchanging with moderate pH, slightly acidic, sodium chloride solutions. Sodium hydroxide is utilized to precipitate the REE-hydroxides subsequently converted to REE-chlorides with suitable amount of hydrochloric acid. All acid and base streams are co-produced with efficient membrane/electrolysis technology. Concentrated-REE chlorides are transported to centralized solvent extraction facilities for isolation and purification. Solvent extraction processes also employ the methodology of using co-produced acid/base streams. This paper details minimization of environmental impacts and maximizing economics to produce valuable REEs while increasing the economics of coal mining.
Proceedings Inclusion? Planned:


A Review on the State of Coal Use as Soil Amendment in East Africa and China
Aluminum-silicon Alloys Prepared from High-aluminum Fly Ash to Extract Magnesium from Serpentine
Enhancement of Coal Nanostructure and Investigation of Its Novel Properties
Extraction and Production of Rare Earth Elements from Coal-Seam Bedrock and Caprock
Extraction and Thermal Dissolution of Low-rank Coal by N-methyl-2-pyrrolidinone
Organic Agriculture Using Natural Material Coal

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