ANALYSIS OF THE FLOW OF GAS/POWDER MIXTURE IN THE OXYGEN CONVERTER LANCE NOZZLES
Journal Title: Journal of Machine Construction and Maintenance - Year 2018, Vol 108, Issue 1
Abstract
A numerical solution of mathematical equations for the carrier gas and powder flow and numerical variables were used for establishing the effect of carrier gas pressure at the nozzles on the change of the thermodynamic flow of gas parameters of gas/powder mixture and pure gas in the nozzles at different operation modes. The calculations were based on the author’s computer program worked out from a mathematical model consisting of equations and parameters of thermodynamic flow of gas conditions. The results of simulations revealed that the change of entry pressure significantly affects the static pressure, gas velocity in the nozzles, the temperature of the carrier gas, and the velocity of i–th solid particle of the expelled powder. Apart from it, the effect of entry pressure before the nozzle on the density and velocity of j-th particle was also analysed. Similar results were obtained in works [1, 4]. Accordingly, the optimum conditions of pure gas jetting in the analysed converter are reached when the jetting out pressure is 1.7 MPa (during each“slag splashing”).Thetemperature before the nozzles should increase every second as this stabilizes the drop of power due to the pressure drop in the manometer. In this case, the lance has to be cooled with water[3].
Authors and Affiliations
Ruslan KUZEMKO, Viktor SINELNIKOV, Vladimir MASTYKASH, Dorota KALISZ
Keywords
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- EP ID EP615819
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