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:
Jan. 08, 2019
Filed:
Nov. 27, 2014
Applicant:
Voestalpine Stahl Gmbh, Linz, AT;
Inventors:
Karl Pilz, Tragwein, AT;
Bertram Fritz, Ansfelden, AT;
Jürgen Antrekowitsch, Leoben, AT;
Gerald Schneeberger, Bruck a.d. Mur, AT;
Assignee:
voestalpine Stahl GmbH, Linz, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 5/00 (2006.01); C21B 3/06 (2006.01); C22B 7/04 (2006.01);
U.S. Cl.
CPC ...
C21B 3/06 (2013.01); C04B 5/00 (2013.01); C22B 7/04 (2013.01); C21B 2100/04 (2013.01); C21B 2100/42 (2017.05); Y02W 30/543 (2015.05);
Abstract
A method for treating desulfurization slag involves conveying desulfurization slag from pig iron desulfurization to a unit where the desulfurization slag is melted at a temperature of at least 1,400° C. In the unit, a thorough mixing is achieved. The treatment takes place in the unit under oxidizing conditions. Sulfur dioxide is generated and collected from the roasting gas and supplied for further utilization.