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:
Oct. 19, 2010
Filed:
Aug. 30, 2004
Maurits Van Camp, Mortsel, BE;
Jonathan Aerts, Turnhout, BE;
Benedict Janssens, Herentals, BE;
Sven Santen, Hofors, SE;
Maurits Van Camp, Mortsel, BE;
Jonathan Aerts, Turnhout, BE;
Benedict Janssens, Herentals, BE;
Sven Santen, Hofors, SE;
Umicore, Brussels, BE;
Abstract
The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process comprises the steps of: —subjecting the residue to a flash or agitated bath fuming step, thereby producing an Fe bearing slag and Zn- and Pb-bearing fumes; and —extracting the Zn- and Pb-bearing fumes and valorising Zn and Pb; characterised in that CaO, SiOand MgO are added as a flux before or during the fuming step so as to obtain a final slag composition with: formula (I) all concentrations being expressed in wt %. The invention also relates to a single-chamber reactor for Zn-fuming equipped with one or more submerged plasma torches as heat and gas sources.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile