The numerical simulation was used to research the four hole oxygen lance of 80t converter.And by comparing the jet behaviors of different oxygen lance and the effects on the molten pool,it concluded that the oxygen lance of OL M2 had a longer max jet radius (increased by 6.7％),a shallower impacting depth (decreased by 4.5 ％) but a larger impact area (increased by 3.3 ％) than the oxygen lance of OL-M1.In order to guarantee the oxygen to be in a good condition,the reasonable operation pressure and oxygen lance position were given.Through the simulation of the mixing time in the molten pool,the average mixing time under the oxygen lance of OL-M2 was shorter by 48 s than that under the same condition of the oxygen lance of OL-M1.Compared with the use of the oxygen lance of OL-M1,the oxygen lance of OL-M2 had a better stirring effect on molten pool,which can promote the mass transfer of dephosphorization reaction at the steelmaking prophase.
关键词
氧枪马赫数/数值模拟/射流行为/冲击效果/混匀时间
Key words
Mach number of the oxygen lance/numerical simulation/jets behavior/impact effect/mixing time
万方数据