【摘要】 文章运用Fulent软件，对基于120 t转炉设计超音速氧枪和二次燃烧氧枪（5孔交错式和8孔均布式）进行模拟计算，对比分析掺混10%CO₂后三种氧枪的射流速度分布特点和对熔池搅拌能力的影响。模拟结果表明：在L>0.57 m处，8孔均布式氧枪的主氧射流速度略小于超音速氧枪的；在L<1.05 m处，由于副孔单孔流量较大，5孔交错式氧枪的主氧射流速度最大；在1.05 m<L<1.8 m处，5孔交错式氧枪的主氧射流速度最小。研究三种氧枪的搅拌强度发现1.45 m处为最佳枪位，在该枪位下，冲击面积大小排序为8孔均布式氧枪>超音速氧枪>5孔交错式氧枪，冲击深度大小排序为8孔均布式氧枪>5孔交错式氧枪>超音速氧枪，8孔均布式氧枪的冲击深度和冲击面积均最大，对熔池冲击能力最强。更多还原

【Abstract】 The article uses Fulent software to simulate the design of supersonic oxygen lance and secondary combustion oxygen lance based on 120 t converter（5-hole staggered type and 8-hole homogeneous type）, to compare and analyze the characteristics of jet velocity distribution of the three types of lances and their influence on the stirring ability of the molten pool after mixing 10% CO₂. The simulation results show that: at L<1.05 m, the main oxygen jet velocity of the 5-hole staggered oxygen lance is the largest due to the larger flow rate of the single hole of the sub-hole; at L>0.57 m, the velocity of the 8-hole homogeneous oxygen lance is less than that of the supersonic oxygen lance; at 1.05 m<L<1.8 m, the main oxygen jet velocity of the 5-hole staggered oxygen lance is the smallest. The stirring intensity of the three types of oxygen guns was found to be the best position at 1.45 m. Under this position, the size of the impact area was ranked as 8-hole uniformly distributed oxygen lance > supersonic oxygen lance > 5-hole staggered oxygen lance, and the size of the impact depth was ranked as 8-hole uniformly distributed oxygen lance > 5-hole staggered oxygen lance > supersonic oxygen lance, and the 8-hole uniformly distributed oxygen lance had the largest impact depth and area, which had the strongest impact ability to the molten pool accordingly.更多还原