铁液中稀土元素-硫平衡的研究

金属学报, 1984, 20(3): 204-213.

铁液中稀土元素-硫平衡的研究

北京钢铁学院

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

本文应用放射性同位素,通过测定电解液内的稀土元素(RE)含量(排除了夹杂状态存在的稀土量),测定了纯铁液中Ce-S,La-S和Nd-S平衡常数及相互作用系数。在1600℃ 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 在Fe-Ce-S-C系统中,测定了Ce,S浓度积和[％C]之关系,并测得e_(Ce)~C=-0.43。分析了前人所测平衡常数偏高的原因。

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.

参考文献

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]

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