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. 24, 2000
Filed:
Oct. 31, 1997
Applicant:
Inventor:
Gianni Zoppi, Dino di Sonvico, CH;
Assignee:
Ecochem Aktiengesellschaft, Triesen, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75 1015 ; 75 1038 ; 75 1046 ;
Abstract
A process for processing electric steelworks dusts containing oxidized high-iron, zinc-bearing materials in order to recover iron and zinc from [them] said dusts. The process includes the steps of: feeding the dusts to an induction furnace partially filled with a charge of metal or alloy to be smelted, wherein the charge is present as a molten bath that is made turbulent by induced currents; contacting the dusts with a surface of the turbulent molten bath inside the furnace; and reducing zinc and iron oxides contained in the dusts inside the furnace, while oxidizing zinc and carbon monoxide rising from the bath.