Abstract:Reasonable dephosphorization mechanism and opportunity were proposed through discussion of dephosphorization trend and drawbacks of conventional dephosphorization in the current study. On the basis of thermodynamics and dynamic analysis on dephosphorization in BOF, it showed that bottom blowing was the main dynamics means to improve dephosphorization efficiency, which could balance the stir of slag-steel interface and dephosphorization temperature control. The study results of slag mass transfer simulation showed that there was a suitable matching relationship between the bottom blowing element number and bottom blowing intensity. With the bottom blowing intensity increased, the number of bottom blowing element should be increased. Long life combined with blowing effects depended not only on rational selection, number, layout of elements and supply patterns, but also on scientific bottom blowing maintenance technology.
Kishimoto Y, Kato Y, Sakuraya T. Recent Progress of Top and Bottom Blown Converters at Kawasaki Steel Corporation[J]. Kawasaki Steel Giho, 1989, 21 (3): 168- 174.
[6]
Kishimoto Y, Kato Y, Sakuraya T. Recent Progress of Top and Bottom Blown Converters at Kawasaki Steel Corporation[J]. Kawasaki Steel Giho, 1989, 21 (3): 168- 174.
Yang Libin, Liu Liu, Wu Liping. Study on Long Campaign Combined Blowing Steelmaking Technique of 300t Converter. Proceedings of the 5th Korea-China Joint Symposium on Advanced Steel Technology for Future Industry, 2009: 16-19.
[13]
Yang Libin, Liu Liu, Wu Liping. Study on Long Campaign Combined Blowing Steelmaking Technique of 300t Converter. Proceedings of the 5th Korea-China Joint Symposium on Advanced Steel Technology for Future Industry, 2009: 16-19.