Patent ID: 6802887
Filing Date: 2004-10-12
Classification: C21B,C21C,F27B,F27D

Abstract:
A method for feeding a gas into a metallurgical vessel, the gas having a condensable component in the gaseous state and/or an evaporable component in the liquid state entrained therein, and the gas being fed to the metallurgical vessel via one or more gas supply devices, the method comprising the steps of:operating each gas supply device to continuously increase the velocity of the gas in a first zone thereof; intimately mixing the gas with the condensable or evaporable component in a turbulence zone of each gas supply device, the turbulence zone being provided by an abrupt cross-sectional widening of a gas supply device having a single flow passage the increase in the cross section of flow at the abrupt cross-sectional widening having a mean inclination &agr; a with respect to the longitudinal axis of the flow passage of at least 60Â°; and after the gas has been intimately mixed with the entrained component, blowing the mixture into the metallurgical vessel via an exit zone of each gas supply device.