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:
Jun. 27, 2023
Filed:
Mar. 12, 2020
Primetals Technologies Austria Gmbh, Linz, AT;
Roland Eisl, Regau, AT;
Bernhard Hiebl, Wilhering, AT;
Hanspeter Ofner, Pucking, AT;
Norbert Rein, Vienna, AT;
Johann Wurm, Bad Zell, AT;
Primetals Technologies Austria GmbH, Linz, AT;
Abstract
The invention relates to a method for the direct reduction of oxidic iron carrier particles to a reduction product in a fluidized bed through which a reduction gas containing 30-100 mol % hydrogen Hflows in crossflow. At least 90% by mass of oxidic iron carrier particles introduced into the fluidized bed have a particle size of less than or equal to 200 micrometers. The superficial velocity U of the reduction gas flowing through the fluidized bed is set between 0.05 m/s and 1 m/s such that, for the particle size d equal to dof the oxidic iron carrier particles introduced into the fluidized bed, it is above the theoretical suspension velocity Uand is less than or equal to U.