关键词: 260 t转炉, 双角度氧枪；融合距离；径向距离；射流偏移系数

Abstract: The influence of the inclination change of double-angle oxygen lance for 260 t BOF on the jet offset degree and fusion distance is studied through CFD numerical simulation. The jet characteristics of the double-angle six hole oxygen lance with I2°-15°to 14°-17° nozzle inclination are compared, and the jet offset coefficient A of the double-angle oxygen lance is defined. The results show that for two jets with different inclination angles of the double-angle six hole oxygen lance, the greater the inclination angle of the jet, the larger the offset degree and fusion distance of the jet. Compared with the jet offset degree, the influence of jet hole inclination on the fusion distance is dominant. Wlien one group has the same inclination angle, the larger the inclination angle of the other group, the greater the fusion distance, die smaller the migration degree, and the later the coalescence phenomenon occurs. The variation range of jet offset coefficient A is (3. 38 -4. 12) x10^-3.

Key words: 260 t BOF, Double-angle Oxygen Lance, Fusion Distance, Radial Distance, Jet Offset Coefficient