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:
Apr. 03, 2001
Filed:
Dec. 04, 1998
Gerald Rosenfellner, St. Peter/Au, AT;
Voest-Alpine Industrieanlagenbau GmbH, Linz, AT;
Abstract
The invention relates to a reduction vessel (,) for the reduction of metal-oxide-bearing material, particularly of iron ore, by means of a reduction gas flowing countercurrently to the metal-oxide-bearing material, which reduction vessel (,) is provided with an inlet (,) for the metal-oxide-bearing material, an inlet (,) for the reduction gas, an outlet (,) for off-gas and an outlet (,) for reduced material, downstream of which outlet (,) a lower sealing leg (,) is connected, a supply line (,) for a first sealing gas being provided at the lower sealing leg (,) in order to seal the reduction vessel (,) against the environment, characterized in that at least one additional supply line (,) for an additional sealing gas is provided at the lower sealing leg (,) , the additional supply line (,) being located downstream of the supply line (,) for the first sealing gas, seen in the direction of flow of the reduced material (FIG.,).