Study on the Influence Factors of Viscosity and Melting Point of Refining Slag of 150 t LF of Chengde Steel
The diffusion dissolution process of inclusions in slag is the limiting link of inclusion removal,so the degree of dissolution of inclusions in slag is used to indicate the quality of slag performance,and the viscosity of refining slag is an important factor of inclusion removal through the inclusion dissolution formula.Through laboratory experiments and FactSage theory calculation,it is concluded that the content of Al2O3 in slag is an important factor affecting its viscosity and melting characteristics.It is given that the optimal Al2O3 in steel refining slag is about 30％,and at this time there are mainly 12CaO·7Al2O3 phase,part of MgO·Al2O3 phase and a small amount of 3CaO·Al2O3 phase in the slag.It is a good low melting point slag system.
refining slaginclusionsslag compositionAl2O3 content in slag
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