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| Impact characteristics of topblown gas jet in BOF |
| Lü Ming,PANG Zhuogang,LI Xiaoming,WANG Jianli |
| (School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi， China) |
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Abstract The impact characteristics of the topblown gas jet were simulated by Fluent and compared with theoretical calculation results. The comparison results showed that the impact depth of the singlehole oxygen lance was less than the calculated value, and the impact area was bigger than the calculated value. With the increasing of the lance height, the difference of the impact depth decreased and the difference of the impact area increased. On this basis, the impact characteristics of the fourhole supersonic oxygen lance in 100 t converter were studied. The impact depth was 0.21 m and the impact area was only 1.328 m2 at the lance height of 1.0 m, which had relatively large differences from the calculated values. When the lance height raised to 1.5 m, the simulation impact depth was 0.12 m, while the calculated value was 0.83 m. The difference of the impact area between the simulation result and the calculated value became greater.
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