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:
Sep. 25, 2012
Filed:
Nov. 23, 2005
Martin Kendall, Hasselt, BE;
Martin Kendall, Hasselt, BE;
RHI AG, Vienna, AT;
Abstract
Regulation of the throughflow of metal melt is provided through a bottom nozzle of a metallurgical vessel having an upper nozzle arranged in the floor of the metallurgical vessel and a lower nozzle arranged below the upper nozzle. At least one inert gas inlet aperture is provided to the melt throughflow aperture, and a sensor is arranged on or in the lower nozzle for determining the layer thickness of metal clogging in the nozzle. The inert gas supply into the bottom nozzle is regulated using measurement signals of the sensor. A bottom nozzle for the metallurgical vessel is provided with a wall of the melt throughflow aperture through the nozzles being formed at least sealed against metal melt and the nozzles being at least partially surrounded by a gas-tight housing. The housing at its lower end encloses the lower nozzle at its periphery in a gas-tight manner and is arranged with a portion of its inner side abutting on the outer side of the nozzle. A thermally insulating solid is arranged between the wall of the melt throughflow aperture and the housing.