Process for recovering materials from bauxite residue, microwave reactor for heating mining products and method for heating a mining product
AssigneeNew Wave Royalties Sociedad Anonima
InventorLucas ARANTES ARAÚJO
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Abstract
This invention refers to a technically and economically feasible process for recovery of metallic and non-metallic relevant contents from mining residues, particularly the bauxite residue, by using it in its whole. Such process route uses energy from microwaves, assisted leaching and logic sequencing of steps that allow a technically and economically feasible removal of components from the bauxite residue, particularly the residue from Bayer process. This invention still refers to a microwave reactor that is appropriate to perform the above-mentioned process, as well as to a method for heating a mining product.
Claims2
Microwave reactor (1) for heating mining products and comprising:
- a housing (10) composed of thermal insulating material, transparent to microwaves, the material being cell concrete with 75% to 95% of Al2O3 in the composition and density from 0.7 to 1.2 gram per cubic centimeter;
- at least a susceptor wall (20, 21, 22) composed of susceptor material;
- and
- at least a reflector plate (30) composed of electromagnetic wave reflector material, the reflector plate (30) comprising, at least, a brushed surface (31) turned towards the heating chamber (A,B);
- wherein the region limited by the housing (10) and, at least, a susceptor wall (20) forms, at least, a heating chamber (A,B).
Dependencies are inferred from the claim text.