Study of gas jet and liquid interaction through interphase surface on the converter simulating cold model
DOI:
https://doi.org/10.31498/2225-6733.30.2015.51626Keywords:
interphase surface, the gas jet, converter, blowing, mass transferAbstract
Various kinds of tuyere sinking into liquid have been developed and tested on a converter simulating model, velocity of gas jet penetration into liquid has been defined, the gas jet behavior in liquid homogenious medium has been researched. Experiments have been made on a simulating model of a 250-ton oxygen converter, made in the ratio 1:25 scale. Water is a metal- simulating liquid. Technically pure oxygen is blown. A one-nozzle tuyere has been used in the experiment, a gas jet going out of it interacting with motionless liquid. The blowing conditions having been specified, the behavior of the gas jet was observed, the crater shape was drawn, the penetration depth was defined. Penetrating into the liquid to a maximum depth the gas jet gets reflected and moves in the opposite direction making the liquid within the boundary layer at the interface move after it. Under such circumstances, gas jet and liquid heat and mass transfer takes place at the interphase surface. The research can be used to determine the dependence of liquid cast iron interphase surface with the oxygen jet in a converter on such parameters as the tuyere height above the liquid iron surface and on the oxygen volume speed at blowing. It was stated that changing position of the tuyere ensures uniform distribution of oxygen in the liquid; the gas jet and liquid interaction makes it possible to give better idea of the mass transfer.References
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