Analysis of CO <sub>2</sub> –O <sub>2</sub> jet characteristics of post-combustion oxygen lance in converter under the influence of multiple parameters
Abstract Converter post-combustion technology is an effective measure to increase the scrap ratio efficiently and cleanly, and the application of CO 2 in converter smelting has many beneficial effects. However, there are few studies on the characteristics of a mixed injection CO 2 + O 2 jet from a post-combustion oxygen lance. In this study, the effects of post-combustion nozzle flow rate and ambient temperature on the jet characteristics of mixed injection CO 2 + O 2 from a post-combustion oxygen lance were investigated and compared with those from conventional oxygen lance nozzles. The results show that increasing the flow rate and ambient temperature of the post-combustion nozzle can increase the main jet and post-combustion velocity and slow down the jet offset. The main jet velocity of the post-combustion nozzle has always been lower than that of the conventional nozzle. It can greatly improve the jet impact area and average velocity of the molten pool. The jet impact area of the conventional nozzle is always smaller than that of the post-combustion nozzle, but it can greatly improve the average velocity of the molten pool.
Authors
- Li‐Jun Huo (ORCID: https://orcid.org/0000-0002-9479-2218)
- Fuhai Liu (ORCID: https://orcid.org/0000-0003-2010-8628)
- Xin Du (ORCID: https://orcid.org/0000-0002-1996-602X)
- Xing Wang (ORCID: https://orcid.org/0000-0002-9760-5959)
- Fuqiang Wen (ORCID: https://orcid.org/0000-0001-6205-4758)
- Yubin Li (ORCID: https://orcid.org/0000-0003-3965-3845)
- Feihong Guo (ORCID: https://orcid.org/0000-0002-6232-3716)
- Guangsheng Wei (ORCID: https://orcid.org/0000-0003-4456-5487)
- Chao Feng (ORCID: https://orcid.org/0009-0002-8422-322X)
Institutions
- People’s Hospital of Rizhao (CN)
- Sinosteel (China) (CN)
- Shandong Iron and Steel Group (China) (CN)
- Liaoning Academy of Agricultural Sciences (CN)
- Shenyang Academy of Environmental Sciences (China) (CN)
- Panasonic (China) (CN)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- High Temperature Materials and Processes
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1515/htmp-2025-0078
- Primary Topic
- Metallurgical Processes and Thermodynamics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- National Science and Technology Major Project
- Fundamental Research Funds for the Central Universities