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:
Feb. 09, 2016
Filed:
Jan. 11, 2013
Siemens Vai Metals Technologies Gmbh, Linz, AT;
Robert Millner, Loosdorf, AT;
Gerald Rosenfellner, St.Peter/Au, AT;
Abstract
A method for reducing iron-oxide-containing feedstocks by introducing a reducing gas into a high-pressure reducing unit () where the reducing gas is consumed by reducing iron-oxide-containing feedstocks and then the reducing gas is withdrawn as top gas from the high-pressure reducing unit (). At least one subportion of the top gas is admixed to a feed gas as recycle gas (). The reducing gas is generated by CObeing separated off from the gas mixture obtained from the addition of the recycle gas () to the feed gas after one or more compression steps. The recycle gas () is added to the feed gas in at least two recycle gas substreams that are separated from one another with recycle gas substream pressures at various distances from the high-pressure reducing unit ().