Separation of coal combustion residue for critical element extraction and other bulk uses
Kanishk Kumar Karan, Reginald Ebhin Masto, Hridesh Agarwalla, Siddharth Bari, Manish Kumar, P. Gopinathan, Bodhisatwa Hazra, Sujan Saha, Sudip Maity
Abstract
Critical rare earth elements are enriched in the >250 μm size fraction of ash with an outlook coefficient > 2.0. Co-extraction with alumina is advantageous. Ash disposal policies should explore size fractions to preserve enriched ash fractions.
Topics & Concepts
CoalResidue (chemistry)Extraction (chemistry)Fraction (chemistry)Fly ashCombustionWaste managementCoal combustion productsChemistryEnvironmental scienceMetallurgyMaterials scienceChromatographyEngineeringOrganic chemistryCoal and Its By-productsRecycling and utilization of industrial and municipal waste in materials productionExtraction and Separation Processes