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:
Apr. 17, 2018
Filed:
Apr. 10, 2013
Metals Technology Development Company Llc, Saint Louis, MO (US);
Massimo Giuseppe Maccagni, Sesto San Giovanni, IT;
Jonathan Hylkjier Nielsen, Rolla, MO (US);
William Leonard Lane, Virburnum, MO (US);
David Michael Olkkonen, Viburnum, MO (US);
Timothy Roy Hymer, Labadie, MO (US);
METALS TECHNOLOGY DEVELOPMENT COMPANY, LLC, Saint Louis, MO (US);
Abstract
A process for recovering non-ferrous metals from a solid matrix may include: leaching the solid matrix with an aqueous-based solution, in a presence of oxygen, to obtain an extraction solution including leached metals and solid leaching residue; separating the solid leaching residue from the extraction solution; and subjecting the extraction solution to at least one cementation to recover the leached metals in elemental state. The leaching solution may include chloride ions. The leaching solution may further include ammonium ions. A pH of the leaching solution may be greater than or equal to 6.5 and less than or equal to 8.5. A leaching temperature may be greater than or equal to 100° C. and less than or equal to 160° C. A leaching pressure may be greater than or equal to 150 kPa and less than or equal to 800 kPa.