The inheritance mechanism of rare earth element lanthanum in baiyuneboite during process of blast furnace ironmaking is studied by taking rare earth lanthanum as the object. The microscopic behaviors of lanthanum from slags to i-ron during process of blast furnace ironmaking are analyzed by thermodynamic calculations and experimental characteriza-tion. The results indicated that La2O3 in blast furnace slags could be reduced to LaC2 during process of blast furnace iron-making,and then LaC2 is dissolved in molten iron and La is adsorbed by the oxygen functional groups on porous graphite so that the rare earth could be inherited to subsequent steelmaking processes,which makes up for the problem in traditional view that the rare earth oxides in blast furnace slags are difficult to be reduced during process of blast furnace ironmaking and cannot be inherited to subsequent processes.
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