POWER INCREASE OF SUPERSONIC JETS IN OXYGEN CONVERTER

5th International Conference Recent Trends in Structural Materials

Sinelnikov, V.O.^1 ; Kalisz, D.^1 ; ak, P.L.^1 ; Kuzemko, R.D.^2

AGH University of Science and Technology, 23 Reymonta str., Cracow

30-059, Poland^1

PSTU Pryazovsky State Technical University, 7 Universytets'ka str., Mariupol

87555, Ukraine^2

关键词: Gas-cooled;    Heat recuperation;    Heating temperatures;    Laboratory studies;    Oxygen converters;    Power increase;    Slag splashing process;    Supersonic jets;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012078/pdf
DOI  :  10.1088/1757-899X/461/1/012078

来源: IOP

【 摘 要 】

Numerical studies targeted to increasing power supersonic jets in oxygen converter during slag splashing process have been presented in this paper. The calculations are based on a special design of the gas-cooled lance, in which the structure was simplified, as compared with a water-cooled lance. Importantly, the sprayed slag with nitrogen and magnesium-containing (MgO) powder were used in the study. The maximum heating temperature in lance nitrogen was equal to 493 °C. The work was preceded by laboratory studies conducted for convertor slag received in one of the European plants. The analysis of the computation results shows that the cooling of the lance with gas leads to the heat recuperation, which increases the temperature of the injected mixture, so that the kinetic energy of the outflowing jet in the converter increases about 3.5 times, and the slag is splashed higher than in the case of a conventional water-cooled lance.