The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2018
Filed:
Mar. 11, 2015
Nordic Mining Asa, Oslo, NO;
Institutt for Energiteknikk, Kjeller, NO;
Asunción Aranda, Oslo, NO;
Johann Mastin, Stavanger, NO;
NORDIC MINING ASA, Oslo, NO;
Abstract
A process for alumina and carbonate production from aluminium rich materials with integrated COutilization, comprising: comminuting and leaching Al-rich materials in concentrated HCl; separating unreacted material from metal chloride solution; separating Alfrom solution by crystallization of AlCl.6HO; calcination of AlCl.6HO with HCl recovery; precipitation of metal carbonates from CO; regeneration of HCl and extractive amines; the Alseparation the facilitated by increasing HCl concentration; the calcination being performed in two steps, one in the range 400 and 600° C. to generate a HCl-rich gas and one above 600° C. to produce AlO; for precipitating metal carbonates, mixing the metal chloride solution with an organic solution containing a selected amine and contacting the mixture with a CO-containing gas, thereby also extracting HCl by formation of an ammonium chloride salt complex; processing thermally or chemically the organic solution to regenerate the amine for recirculation.