Hydration Kinetics of Lime

この論文にアクセスする

この論文をさがす

著者

抄録

Hydration rate of calcium oxide has been investigated for a suspended single pellet into an atmosphere of air with a controlled humidity using a computer aided thermo-gravimetric technique. It has been found that the hydration reaction takes place on a sharp, well defined interface between the product layer and the unreacted core. A theoretical model for this reaction, that takes into account the sample swelling, was derived and employed to estimate the values for the rate constant and the effective diffusivity of the water vapor in the Ca(OH)<sub>2</sub> layer.<br> These results suggest that gas mass transfer, pore diffusion and chemical reaction were all contributing resistances in the model. The calcination temperature and the water vapor partial pressure are the two most important variables that affect the hydration rate of lime. The higher the calcination temperature, the lower the hydration rate and the higher the water vapor partial pressure, the higher the hydration rate. The hydration temperature was found to play also a very important role in the phenomena involved.

収録刊行物

  • ISIJ international

    ISIJ international 37(5), 468-476, 1997-05-15

    The Iron and Steel Institute of Japan

参考文献:  16件中 1-16件 を表示

  • <no title>

    MARGOT-MARETTE H.

    Corros. Sci. 27, 1009, 1987

    被引用文献1件

  • <no title>

    ZULIANY D. J.

    Can. Metall. Q. 20, 181, 1981

    被引用文献1件

  • <no title>

    POCKLINGTON D. N.

    Proc. Conf. Hydrogen in Steel 14, 1982

    被引用文献1件

  • <no title>

    GARNICA P. G.

    Metallurgical Processes for the Eartly 21st Century, 1994

    被引用文献1件

  • <no title>

    GARNICA P. G.

    Proc. Steelmaking Conf. 77, 189, 1994

    被引用文献1件

  • <no title>

    RIBOUD P. V.

    Ironmaking Steelmaking 12, 79, 1985

    被引用文献1件

  • <no title>

    FRUEHAN R. J.

    Metall. Trans. B 12B, 379, 1981

    被引用文献2件

  • <no title>

    SOBOLEV V. V.

    Steel URSS 16, 25, 1986

    被引用文献1件

  • <no title>

    LEVENSPIEL O.

    Ingenieria de las Reacciones Quimicas 397, 1987

    被引用文献1件

  • <no title>

    SZEKELY J.

    Gas-Solid Reactions 25, 1976

    被引用文献1件

  • <no title>

    BIRD R. B.

    Transport Phenomena 647, 1960

    被引用文献2件

  • <no title>

    YAGI T.

    Trans. Iron Steel Inst. Jpn. 8, 377, 1968

    被引用文献5件

  • <no title>

    KUBASCHEWSKI O.

    Metallurgical Thermochemistry, 1979

    被引用文献27件

  • <no title>

    KASAMA S.

    Proc. 111th ISIJ 26, 1986

    被引用文献1件

  • <no title>

    BORGWARDT R. H.

    Ind. Eng. Chem. Fundam. 25, 165, 1986

    被引用文献2件

  • <no title>

    MARSH D. W.

    Chem. Eng. Sci. 40, 423, 1985

    被引用文献3件

被引用文献:  2件中 1-2件 を表示

各種コード

ページトップへ