Simulation and Application of Ruhrstahl–Heraeus (RH) Reactor with Bottom-Blowing

2021 ◽  
Author(s):  
Jianfeng Dong ◽  
Chao Feng ◽  
Rong Zhu ◽  
Guangsheng Wei ◽  
Juanjuan Jiang ◽  
...  
Keyword(s):  
Bottom Blowing

Research of Flow Simulation with High-Pressure and Bottom-Blowing Nitrogen

2013 ◽  
Vol 634-638 ◽  
pp. 3110-3113
Author(s):  
Shu Huan Wang ◽  
He Jun Zhang ◽  
Ding Guo Zhao
Keyword(s):  
High Pressure ◽  
Flow Field ◽  
Molten Steel ◽  
Gas Content ◽  
High Nitrogen Steel ◽  
High Nitrogen ◽  
Nitrogen Steel ◽  
Bottom Blowing ◽  
Steel Flow ◽  
Pressure Factor

According to the actual situation of refining high nitrogen steel with the laboratory high pressure reaction axe, the molten steel flow field in the high-pressure and bottom-blowing nitrogen reactor was simulated by using the software Fluent. The rules of the influence of pressure factor on the molten steel flow field characteristics, turbulent kinetic energy and gas content were explored. According to the characteristics of the flow field and gas-liquid two phase structure, the rules of the influence of pressure factor on nitrogen concentration distribution were analyzed. So some useful theoretical basis and guidance were provided for laboratory refining high nitrogen steel and industrial production in the future.

Bottom-Blown Stirring Technology Application in Consteel EAF

2011 ◽  
Vol 361-363 ◽  
pp. 639-643 ◽  
Author(s):  
Kai Dong ◽  
Rong Zhu ◽  
Wen Juan Liu
Keyword(s):  
Molten Steel ◽  
Basic Principle ◽  
Liquid Steel ◽  
Mixing Time ◽  
Technology Application ◽  
Heat Time ◽  
Final Slag ◽  
Stirring Effect ◽  
Lime Consumption ◽  
Bottom Blowing

Bottom blown stirring technology application in EAF was studied in this paper. The basic principle of bottom blowing process was researched, the bottom blown stirring can give strong stirring effect on the molten steel bath, thus bath mixing time was shortened, decarburization and dephosphorization were improved, however over stirring would lead to liquid steel incontact with atmosphere air. Reasonable process was considered on Consteel EAF. results show that: with bottom-blown stirring technology, decarburization and dephosphorization increase significantly; oxygen and lime consumption decrease; content of FeO in final slag reduces; and heat time becomes short.

scholarly journals Effect of Bottom Blowing Mode on Fluid Flow and Mixing Behavior in Converter

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 117
Author(s):  
Jiankun Sun ◽  
Jiangshan Zhang ◽  
Wenhui Lin ◽  
Xiaoming Feng ◽  
Qing Liu
Keyword(s):  
Refractory Lining ◽  
Mixing Time ◽  
Diffusion Path ◽  
Tracer Diffusion ◽  
Mixing Efficiency ◽  
Molten Bath ◽  
Local Flow ◽  
Average Value ◽  
Type Mode ◽  
Bottom Blowing

Bottom blowing agitation plays a crucial role in improving the reaction kinetics condition of molten bath during the steelmaking process. Herein, the influence of bottom blowing mode on the flow and mixing characteristics of molten bath and the abrasion characteristics of refractory lining in a 6:1 scaled-down model of a 100 t converter were investigated using physical and numerical simulations together. Eight bottom blowing modes were designed (uniform, three-point linear co-direction, three-point linear unco-direction, two-point linear, circumferential linear, A-type, V-type, and triangle alternating). The results indicated that bottom blowing mode has a significant effect on the local flow field at the inner ring of bottom tuyeres, the velocity interval distribution, and the turbulent kinetic energy, which in turn determines the tracer diffusion path and rate as well the mixing time of molten bath. Reasonable non-uniform bottom blowing modes promote the interaction between the various stirring sub-zones of the molten bath. Among them, the three-point linear co-direction mode and A-type mode have the highest mixing efficiency under the conditions of bottom blowing and combined blowing, respectively, which is superior to the uniform mode. In addition, the bottom blowing mode changed the location and degree of abrasion of the refractory lining, and the total abrasion of the non-uniform mode was reduced. The average value and fluctuation degree of integral wall shear stress for the A-type mode were minimal.

scholarly journals Refining Stainless Steel in Top and Bottom Blowing Converter with Dephosphorized Hot Metal

1983 ◽  
Vol 69 (15) ◽  
pp. 1886-1892 ◽  
Author(s):  
Sumio YAMADA ◽  
Keizo TAOKA ◽  
Ryuichi ASAHO ◽  
Mitsuo HIROSE ◽  
Takuo IMAI ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hot Metal ◽  
Bottom Blowing

Simulation and application of pulsating bottom-blowing in EAF steelmaking

2018 ◽  
Vol 45 (9) ◽  
pp. 847-856 ◽  
Author(s):  
Guangsheng Wei ◽  
Rong Zhu ◽  
Yun Wang ◽  
Kai Dong ◽  
Xuetao Wu ◽  
...  
Keyword(s):  
Bottom Blowing

scholarly journals Estimation of Liquid and Bubble Rising Velocities in Bottom Blowing Bubbling Jet

1993 ◽  
Vol 79 (5) ◽  
pp. 561-568 ◽  
Author(s):  
Manabu IGUCHI ◽  
Zen-ichiro MORITA ◽  
Hirohiko TOKUNAGA ◽  
Hideo TATEMICHI ◽  
Yujiro SAKAMOTO ◽  
...  
Keyword(s):  
Bottom Blowing ◽  
Bubble Rising
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