Selection of Oxygen Pressure in BOF Steelmaking

Based on the on-site investigation and the principle of compressible flow, the working oxygen pressure should be matched to the Mach-number at the nozzle in designing nozzle and oxygen supply schedule so that the higher penetration depth and the more blending energy can be obtained for reducing ener...

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Published inJournal of iron and steel research, international Vol. 18; no. 11; pp. 12 - 16
Main Authors Wang, Ming-Lin, LUe, Ying-Hua, Yang, Wen-Yuan, Li, Shu-Gui, Xu, Xiao-Wei
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.11.2011
Springer Singapore
Subjects
Applied and Technical Physics
Basic converters
Combustion
Engineering
Iron and steel industry
Iron and steel making
Mach-number
Machines
Mach数
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Nozzles
oxygen pressure
Oxygen steel making
penetration depth
Physical Chemistry
Processes
Shock waves
steelmaking
Steels
二次燃烧氧枪
可压缩流动
氧气压力
氧气射流
氧气转炉炼钢
铁水预处理
steelmaking
penetration depth
oxygen pressure
Mach-number
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Summary:Based on the on-site investigation and the principle of compressible flow, the working oxygen pressure should be matched to the Mach-number at the nozzle in designing nozzle and oxygen supply schedule so that the higher penetration depth and the more blending energy can be obtained for reducing energy loss by shock wave in the ultrasonic oxygen jet in the normal BOF steelmaking. For some special BOF blowing technologies, such as steelmaking with high phosphorus hot metal, post combustion oxygen lance, hot metal pretreatment, etc, the difference between working oxygen pressure and designed diffusion pressure which is related to Mach-number is necessary, so that the velocity of the oxygen jet will be decreased because of shock wave for expected metallurgical results.
Bibliography:11-3678/TF
oxygen pressure;Mach-number; steelmaking; penetration depth
Based on the on-site investigation and the principle of compressible flow, the working oxygen pressure should be matched to the Mach-number at the nozzle in designing nozzle and oxygen supply schedule so that the higher penetration depth and the more blending energy can be obtained for reducing energy loss by shock wave in the ultrasonic oxygen jet in the normal BOF steelmaking. For some special BOF blowing technologies, such as steelmaking with high phosphorus hot metal, post combustion oxygen lance, hot metal pretreatment, etc, the difference between working oxygen pressure and designed diffusion pressure which is related to Mach-number is necessary, so that the velocity of the oxygen jet will be decreased because of shock wave for expected metallurgical results.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(11)60110-6