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- Title
Influence of Preheating Temperature on the Characteristics of O<sub>2</sub> + CO<sub>2</sub> Jet by Mixed Injection with a Swirling Oxygen Nozzle.
- Authors
Feng, Chao; Chen, Shengzhen; Dong, Jianfeng; Zhu, Rong; Wei, Guangsheng; Dong, Kai
- Abstract
Top blown O2 + CO2 mixed injection technology with a swirling oxygen lance nozzle, which supports a larger jet radial velocity than the conventional oxygen lance nozzle, improves the impact area of the jet and thus the process efficiency of converter smelting. In this study, the jet characteristics of a 90% O2 + 10% CO2 mixture injected through a full-scale four-hole swirl nozzle was simulated and the effects of preheating temperature and gas flow rate on the jet characteristics were analyzed. Increasing the preheating temperature and gas flow rate increases the axial velocity of the jet, the core section, and the mixing degree of multiple jets. At the same injection distance, increasing the preheating temperature of the mixture increases the impact strength and area of the jet. These results can be used to adjust the gas flow rate and preheating temperature of the mixed gases in large-scale smelting operations.
- Subjects
DEBYE temperatures; SWIRLING flow; NOZZLES; JETS (Fluid dynamics); GAS flow; SMELTING furnaces
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2021, Vol 73, Issue 10, p2985
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-021-04836-2