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| A STUDY OF THE EQUILIBRIA BETWEEN RARE EARTH ELEMENTS AND SULPHUR IN MOLTEN IRON |
| HAN Qiyong; DONG Yuanchi; FENG Xi'an; XIANG Changxiang; YANG Sifu (Beijing University of Iron and Steel Technology) (Manuscript received 4 December; 1982; revised manuscript 4 October; 1983) |
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Cite this article:
HAN Qiyong; DONG Yuanchi; FENG Xi'an; XIANG Changxiang; YANG Sifu (Beijing University of Iron and Steel Technology) (Manuscript received 4 December; 1982; revised manuscript 4 October; 1983). A STUDY OF THE EQUILIBRIA BETWEEN RARE EARTH ELEMENTS AND SULPHUR IN MOLTEN IRON. Acta Metall Sin, 1984, 20(3): 204-213.
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Abstract By means of radioactive isotope, the measurement of the content of rare earth elements in electrolytes, excluding that in the form of inclusion, was made to determine the equilibrium constants of Ce-S, La-S and Nd-S, and the relating interaction coefficients. At1600℃, K_(ceS)=2.70×10~(-6) e_s~(Ce)=-2.36 K_(LaS)=7.41×10~(-7) e_S~(La)=-1.51 K_(NdS)=2.57×10~(-6) e_S~(Nd)=-1.54 The dependence of the concentration products Ce-S on [%C] in the system Fe-Ce-S-C was evaluated.. The interaction coefficient e_(Co)~C was determined to be—0.43. The reason why the higher values of the RE-S equilibrium constants were obtained by previous workers has also been discussed.
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Received: 18 March 1984
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