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| Effect of Nozzle Type of Oxygen Lance on Bubble Morphology and Mixing Condition in Bottom Blown Furnace |
| Received:September 21, 2020 Revised:September 21, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2020.12.004 |
| KeyWord:bottom blown smelting furnace; oxygen lance nozzle; cold state experiment |
| Author | Institution |
| WANG Hui |
青岛特殊钢铁有限公司 装备部 |
| TAN Qiusheng |
青岛特殊钢铁有限公司 装备部 |
| SU Fuyong |
北京科技大学 能源与环境工程学院 |
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| Abstract: |
| Four different nozzle structures of oxygen lance were studied by cold state experiment. Bubble morphology of different nozzle was obtained by high-speed camera, and mixing state of fluid in furnace under different nozzle was measured by conductivity method. The experimental results show that with the same gas flow rate, shape of bubbles in furnace is very similar with different gas nozzles. When nozzle with the most complex structure is used, mixing state in furnace is the best, and mixing effect of nozzle with the simplest structure is the worst. The minimum response time rises by about 11% and mixing time rises by 4.7% compared with the most complex nozzle. |
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