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 degre

e

and the later the coalescence phenomenon occurs. The variation range of jet offset coefficient A is (3. 38 -4. 12) x10

-3

.