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The deoxidation equilibrium of liquid steel was investigated from a new perspective.Dissolved associate MmOn was used to describe the interaction between dissolved M and dissolved oxygen instead of the interaction parameter of Wagner.The concentration of unassociated oxygen could be considered as the activity of oxygen.Or,the percentage of unassociated oxygen in the total dissolved oxygen was the activity coefficient of oxygen.When the content of deoxidizer was low,the dissolved oxygen was mainly composed of the unassociated oxygen,while more and more MxO formed with gradually increasing M content.The present model gave a good description to the aluminum deoxidation equilibrium after considering Al O and Al2 O.Furthermore,the higher the content of Al was,the higher the content of Al2 O relative to the content of Al O would be.
The deoxidation equilibrium of liquid steel was investigated from a new perspective. Dissolved associate MmOn was used to describe the interaction between dissolved M and dissolved oxygen instead of the interaction parameter of Wagner. The concentration of unassociated oxygen could be considered as the activity of oxygen. Or, the percentage of unassociated oxygen in the total dissolved oxygen was the activity coefficient of oxygen. When the content of deoxidizer was low, the dissolved oxygen was mainly composed of the unassociated oxygen, while more and more MxO formed with gradually increasing M content. The present model gave a good description to the aluminum deoxidation equilibrium after considering Al O and Al 2 O.Furthermore, the higher the content of Al was, the higher the content of Al 2 O relative to the content of Al O would be.