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:
Jul. 24, 2001
Filed:
Apr. 07, 1999
Josef Stockinger, Leonding, AT;
Michael Nagl, Reichenau, AT;
Voest-Alpine Industrieanlagenbau GmbH, Linz, AT;
Abstract
According to a process for producing pig iron (,) from fine-particulate iron oxide carriers and lumpy iron-containing material in a meltdown gasifying zone (,) of a melter gasifier (,), the iron-containing material is melted in a bed (,) formed of solid carbon carriers, under the supply of carbon-containing material and oxygen-containing gas while simultaneously forming a reducing gas. Fine-particulate iron-oxide carriers, such as iron-containing fine ore and ore dust and oxidic iron fine dust, are introduced into a reducing gas stream leaving the melter gasifier (,), and the reducing gas is separated from the fine-particulate material formed thereby. The separated fine-particulate material is introduced into the meltdown gasifying zone (,) via a dust recirculation line (,) and through a dust burner (,), and the reducing gas is used for reducing iron-oxide-containing material. To be able to charge large amounts of fine ore or ore dust in this process, the separated fine-particulate material in the dust recirculation line (,to,) is conveyed via a fluidized bed sluice (,) formed by the separated fine-particulate material and by reducing gas to the dust burner (,) and reduced thereby (FIG.,).