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Mathematical modelling of decarburisation and degassing during vacuum circulation refining process of molten steel: mathematical model of the process
Author(s) -
Wei JiHe,
Yu NengWen
Publication year - 2002
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.200200185
Subject(s) - refining (metallurgy) , process (computing) , metallurgy , mass transfer , circulation (fluid dynamics) , materials science , chemistry , thermodynamics , computer science , physics , chromatography , operating system
Based on the mass and momentum balances in the system, a new mathematical model for decarburisation and degassing in the vacuum circulation refining process of molten steel has been proposed and developed. The refining roles of the three reaction sites, i.e. the upsnorkel zone, the droplet group and steel bath in the vacuum vessel, have been considered in the model. It was assumed that the mass transfer of reactive components in the molten steel is the rate control step of the refining reactions. And the friction losses and drags of flows in the snorkels and vacuum vessel were all counted. For the refining process of molten steel in a 90 t multifunction RH degasser, the parameters of the model have been discussed and more reasonably determined.