The determination of exit parameters of media flowing through narrow channels of bottom tuyeres of high-temperature units

Abstract

For blowing gaseous technological media into the melt below the level thereof, special designs of tuyeres are used in high-temperature units. The structural design of the majority of these tuyeres considers one or more channels composed of steel tubes or formed directly in the basic refractory material of the tuyere. From the point of view of structural design of these tuyeres, it is very important to know the dependence of exit parameters of blown media on the design parameters of the tuyere; the parameters determined with one channel being taken as a basis. The contribution contains a description and chosen results of two-dimensional mathematical modelling of gaseous medium flow through a narrow channel with given dimensional parameters.