2003 Volume 89 Issue 2 Pages 244-251
The purpose of the present paper is to decide the form and dimensions of the practical fuel injection nozzle used to RH-treatment. The distribution of static pressure in the nozzle and the velocity at the outlet of the nozzle are investigated. From the results for four types of nozzles and theoretically calculated pressure distributions, the flow behaviors of gas in the nozzles with and without a sub-hole are discussed as the case of reheating the refractory surface under atmospheric pressure and the case of keeping the temperature of molten steel under almost vacuum state.
