Design and optimization of oxygen lance for 210 T converter

[摘要] In order to satisfy the requirements of modern steelmaking for high oxygen supply intensity and high efficient smelting, the oxygen lance of 210 t converter with different structures are simulated by numerical simulation. The effects of the number of nozzles, Mach number and inclination angle on the velocity distribution, coalescence behavior and the impact area of the jet are discussed. The results demonstrate that compared with the five-hole oxygen lance, the increase of the number of nozzles accelerates the attenuation of jet and increases the coalescence of jet. At the same inclination angle, the change of Mach number has almost no influence on the jet. At the same Mach number, the increase of inclination angle causes the range of impact increases and the strength of impact decreases. Based on effective impact area, the optimal oxygen lance is scheme 9.

[学科分类] 核物理和高能物理

[关键词] steel;converter;oxygen lance;numerical simulation;effective impact area