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| Study on Characteristics and Effect of Bottom Blowing Lance Structure on Stirring of Molten Bath |
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Received:May 03, 2020
Revised:May 05, 2020
Accepted:May 05, 2020
Published Online:June 20, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.07.017 |
| KeyWord:numerical simulation; nozzle structure; binarization; oxygen bottom blowing; two-phase flow |
| Author | Institution |
| Zhang Tifu |
易门铜业有限公司 |
| Chen Quankun |
易门铜业有限公司 |
| Yang Yingbao |
易门铜业有限公司 |
| Yu Xiaolv |
易门铜业有限公司 |
| Duan Yaming |
易门铜业有限公司 |
| Li Jianfu |
易门铜业有限公司 |
| Wang Yuhui |
昆明理工大学 有色金属资源清洁利用国家重点实验室 |
| Wang Shibo |
昆明理工大学 有色金属资源清洁利用国家重点实验室 |
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| Abstract: |
| To address strengthen mixing effect through changing gun structure during bottom blowing bath smelting process, molten pool melting furnace unsteady mathematical model of multiphase flow was established by numerical simulation method, and multilayer fence-structure model of oxygen gun was constructed. The calculation results show that oxygen bottom blowing process is cyclical, which can be divided into three procedures, i.e., large bubbles formation, airflow column formation, and airflow breaks through the pool level. Phase diagram, average surface turbulent kinetic energy and average pressure of oxygen gun with/without fence-structure during above mentioned three procedures were comparative analyzed. The results show that oxygen gun with multi-layer fence-structure helps to tighten internal mixing of molten bath. |
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