金属学报  1964, Vol. 7 Issue (4): 376-382

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渣铁间碳还原反应的动力学问题

王渭源

中国科学院冶金研究所

KINETICS OF THE REACTIONS BETWEEN LIQUID SLAGS AND CARBON-SATURATED IRON

WANG WEI-YUAN(Institute of Metallurgy; Academia Sinica)

王渭源. 渣铁间碳还原反应的动力学问题[J]. 金属学报, 1964, 7(4): 376-382.
. KINETICS OF THE REACTIONS BETWEEN LIQUID SLAGS AND CARBON-SATURATED IRON[J]. Acta Metall Sin, 1964, 7(4): 376-382.

摘要 参考文献 相关文章 Metrics 全文: PDF(550 KB)   摘要: 总結了渣鉄間碳还原反应,包括FeO,MnO,CrO,V_2O_3的还原和铁液中脫硫。可以认为界面上化学反应很快达到平衡,而整个反应的控制步驟是对流扩散。发現反应級数,在熔体处于旋轉运动(用旋轉坩堝或旋轉攪拌棒)下为一級,处于仅由CO气泡攪动(用靜止坩堝)下为二級;处理脫硫和FeO的还原数据的結果表明,在上述两种情况下,扩散界面层厚度δ分别和轉速ω~(-1/2)和浓度C~(-1)成比例。 討論了固液界面上对流扩散原理在渣铁间碳还原反应中的应用,可以滿意地說明上述規律性。对于SiO_2的碳还原反应,根据現有实驗結果,尚不能肯定对流扩散的作用,可能此反应受界面化学反应所控制。 Abstract：An investigation of the kinetics of the reactions between liquid slags and carbonsaturated iron including the reduction of FeO, MnO, CrO and V_2O_3 by carbon and the desulphurization of iron leads to the conclusion that the chemical reactions come to equilibrium rapidly at the slag-metal interface, while the controlling step is convective diffusion. It has been found that the reactions are of the first order when the melt is kept in a rotational motion, caused by the use of a rotating crucible or stirrer, and are of second order when the melt is kept in a stationary crucible and stirred by CO gas bubbles only. The thickness of the diffusion boundary layer δ, obtained from a treatment of Chipman's desulphurization data and Philbrook's data on the reduction of FeO, which correspond to the two fore-mentioned cases respectively, has been found to be inversely propertional to ω~(1/2), the square root of the angular velocity, and C_(FeO), the concentration of FeO in the slag phase.The present problem has been treated on the basis of the principle of convective diffusion across a solid-liquid interface according to Levich. It has been found that our findings can be satisfactorily explained by an application of this principle. An exceptional case is the reduction of SiO_2 from slags, which is probably controlled by interfacial chemical reaction. 收稿日期: 1964-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王渭源 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1964/V7/I4/376 [1] Dancy, T. E.: J. Iron Steel Inst. (London), 1951, 169, 17． [2] Philbrook, W. O., Kirkbride, L. D.: Trans. AIME, 1956, 206, 351． [3] Goldman, K. M., Chang Lo-ching (张祿经): Trans. AIME, 1948, 176, 309． [4] Ramachandran, S., King, T. B., Grant, N. J.: Trans. AIME, 1956, 206． 1549． [5] Fulton, J. C., Chipman, J.: The Physical Chemistry of Steelmaking, ed. J. F. Elliott, (Wiley, 1958) , p. 113． [6] 沢村企好:铁钢,1958,44,215． [7] #12 [8] McCoy, C. W., Philbrook, W. O.: Trans. AIME, 1958, 212, 226． [9] 王渭源、邹元爔:科学通报,1962,(1) ,28． [10] 赵彭年、邹元爔:金属学报,1963,6,29． [11] Tarby, S. K., Philbrook, W. O.: J. Metals, 1961, 13, 442． [12] #12 [13] Wagner, C.: The Physical Chemistry of Steelmaking, ed. J. F. Elliott, (Wiley, 1958) , p. 237． [14] #12 [15] Fulton, J. C., Chipman, J.: Trans. AIME,, 1959, 215, 888．G No related articles found! Viewed Full text Abstract Cited   Shared      Discussed