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Reduction Behaviour of BOF Slags by Carbon in Iron
Author(s) -
Jung SungMo,
Do YoungJu
Publication year - 2006
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200606391
Subject(s) - steelmaking , slag (welding) , carbon fibers , metallurgy , vaporization , direct reduced iron , reduction (mathematics) , chemistry , phosphorus , basic oxygen steelmaking , materials science , mathematics , geometry , organic chemistry , composite number , composite material
Experiments were carried out in a system with BOF slags from industrial operations in order to optimize the conditions of recycling BOF slags produced in the steelmaking process. Reduction reactions of FeO and P 2 O 5 proceeded steadily and the FeO reduction rate was almost identical to that of P 2 O 5 . The reduction reaction of FeO and P 2 O 5 in BOF slag at the slag/gas interface is the rate‐controlling step. The reaction rates of FeO and P 2 O 5 by dissolved carbon in molten iron are of first order with respect to their respective concentrations. The reduction reactions of FeO and P 2 O 5 by dissolved carbon in iron are much closer to the equilibrium state compared with the reduction by solid carbon. It is necessary to control the portion of phosphorus vaporization during reduction treatment in order to obtain efficient operational conditions for BOF slag reduction.