Functionalization of Supersonic Oxygen Lance for EAF

2021 ◽  
Author(s):  
Y. Hagihara ◽  
M. Yamaguchi ◽  
Y. Yamamoto
Keyword(s):  
Oxygen Lance

Supersonic jet characteristics of two parameter oxygen lance nozzle

2021 ◽  
pp. 1-13
Author(s):  
Chao Feng ◽  
Tao Xia ◽  
Guangsheng Wei ◽  
Jianfeng Dong ◽  
Rong Zhu ◽  
...  
Keyword(s):  
Supersonic Jet ◽  
Oxygen Lance ◽  
Jet Characteristics ◽  
Two Parameter

Simulation of Flow Field of Oxygen Lance Gas Jet Utilized for 50 t Converter

2011 ◽  
Vol 18 (4) ◽  
pp. 11-18 ◽  
Author(s):  
Jun-guo Li ◽  
Ya-nan Zeng ◽  
Jian-qiang Wang ◽  
Zhi-jie Han
Keyword(s):  
Flow Field ◽  
Gas Jet ◽  
Oxygen Lance

The Numerical Simulation and Application of Oxygen Lance in 120t BOF of PANSTEEL

2013 ◽  
pp. 393-399
Author(s):  
Yong Chen ◽  
Xin-teng Liang ◽  
Jian-hua Zeng ◽  
Gui-jun Li ◽  
Sen-xiang Yang
Keyword(s):  
Numerical Simulation ◽  
Oxygen Lance

scholarly journals Effect of Lance Structure on Behavior of Coherent Jet in EAF Steelmaking Process

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1043
Author(s):  
Fuhai Liu ◽  
Rong Zhu ◽  
Guangsheng Wei ◽  
Shiliang Fan
Keyword(s):  
Reaction Rate ◽  
High Ambient Temperature ◽  
Arc Furnace ◽  
Oxygen Lance ◽  
Steelmaking Process ◽  
Metallurgical Property ◽  
Electrical Arc ◽  
Stirring Effect ◽  
Combustion Experiment ◽  
Coherent Jet

During the electric arc furnace steelmaking process, the coherent jet technology was widely used to protect the kinetic energy of the supersonic oxygen jet and achieve better mixing effects. Comparing with the conventional oxygen lance, the coherent lance could increase the surface area of impaction cavity, resulting in a better stirring effect and higher reaction rate. However, there was limited research about the effect of restriction structure for the coherent lance tip on the flow field characteristic of the main oxygen jet. In this research, three kinds of restriction structures have been investigated by numerical simulation and combustion experiment at room and high ambient temperature conditions. Then an optimum restriction structure would be tested in a 75 t electrical arc furnace steelmaking process to verify its metallurgical property.

Research on coherent jet oxygen lance in BOF steelmaking process

2019 ◽  
Vol 116 (5) ◽  
pp. 502 ◽  
Author(s):  
Ming Lv ◽  
Rong Zhu
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Basic Oxygen Furnace ◽  
Oxygen Lance ◽  
Oxygen Utilization ◽  
Basic Oxygen ◽  
Steel Material ◽  
Coherent Jet ◽  
Central Oxygen ◽  
Dephosphorization Rate

The properties of conventional supersonic oxygen jet and coherent jet were simulated by Fluent in this paper. Their velocity field and jet radius were analyzed comparatively. The attenuation of gas jet was slowed down by the coherent jet oxygen lance. Besides, the effects of annular flow rate on the central oxygen jet velocity were also researched. It is showed that the core of the jet is gradually prolonged with the increase of annular gas flow rate. Based on the simulations, the designed coherent jet oxygen lance was experimented in 35 ton converter. It is found that the end-point phosphorus content is decreased from 0.024 to 0.016%, and dephosphorization rate is increased significantly, the average consumption of steel material is reduced by 3.4 kg/t, and iron-loss of slag is also reduced, which is favorable to improve oxygen utilization and metallic yield. This research provides good foundation for coherent jet technology promotion and application in Basic Oxygen Furnace (BOF).

Effect of Lance Nozzle Angle and Mixing Gas Blowing on BOF Process

2011 ◽  
Vol 402 ◽  
pp. 446-451
Author(s):  
Dong Xu ◽  
Da Qiang Cang ◽  
Ling Ling Zhang ◽  
Li Xue Qin ◽  
Jian Feng Duan
Keyword(s):  
Carbon Dioxide ◽  
Heat Load ◽  
Oxygen Lance ◽  
Rate Decrease ◽  
Dust Generation ◽  
Impact Area ◽  
Gas Blowing ◽  
The Impact

The hot experiment was carried out to study the effect of lance nozzle and mixing gas blowing on steelmaking. The heat load of oxygen lance, component in the bath and dust generation were studied in the hot experiment under different lances and mixing blowing process. The absorbed heat is lower and the slag adhesion on the oxygen lance is reduced with the lance nozzle angle increasing. By using small portion of carbon dioxide as top gas is help to reduce the temperature in the impact area and decrease the dust generation, but the decarbonization rate decrease with the proportion of carbon dioxide increasing.

Simulation and Application of Swirl-Type Oxygen Lance in Vanadium Extraction Converter

2012 ◽  
Vol 84 (3) ◽  
pp. 304-312 ◽  
Author(s):  
Ming Lv ◽  
Rong Zhu ◽  
Hui Wang ◽  
Ruiguo Bai
Keyword(s):  
Oxygen Lance ◽  
Vanadium Extraction

Effect of operation parameters on supersonic jet behaviour of BOF six-nozzle oxygen lance

2014 ◽  
Vol 41 (9) ◽  
pp. 699-709 ◽  
Author(s):  
M. M. Li ◽  
Q. Li ◽  
L. Li ◽  
Y. B. He ◽  
Z. S. Zou
Keyword(s):  
Supersonic Jet ◽  
Oxygen Lance ◽  
Operation Parameters
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