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

摘要： 通过CFD数值模拟研究了260 t转炉用双角度氧枪的倾角变化对射流偏移程度和融合距离的影响，比较了双角度六孔氧枪在喷孔倾角12°-15°～14°-17°下的射流特性，明确了双角度氧枪的射流偏移系数A。研究结果表明：对于双角度六孔氧枪的两股不同射流，倾角越大，射流偏移程度和融合距离越大；与射流偏移程度相比，喷孔倾角对融合距离的影响占主导地位；一组倾角相同时，另外一组倾角越大，融合距离越大，偏移程度越小，聚并现象发生得越晚，射流偏移系数A的变化范围在(3.38～4.12)×10^-3。

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