| 摘要 |
The invention relates to the regulation of the throughflow through a bottom nozzle of a metallurgical vessel, with an upper nozzle arranged in the floor of the metallurgical vessel and a lower nozzle arranged below the upper nozzle, with at least one inert gas inlet aperture and with a sensor arranged on or in the lower nozzle for determining the layer thickness of clogging in the nozzle, the inert gas supply into the bottom nozzle being regulated using the measurement signals of the sensor. It furthermore relates to a bottom nozzle for a metallurgical vessel with an upper nozzle arranged in the floor of a metallurgical vessel and a lower nozzle arranged below the upper nozzle, the wall of the throughflow aperture through the nozzles being formed at least sealed to metal melt, the wall of the throughflow aperture through the nozzles being formed at least sealed to metal melt, the nozzles being at least partially surrounded by a gastight housing, the housing at its lower end gastightly enclosing the lower nozzle at its periphery and being arranged with a portion of its inner side abutting on the outer side of the nozzle, and a thermally insulating solid being arranged between the wall of the throughflow aperture and the housing.
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