<報文>850, 950, 1050℃で還元した酸化鉄ペレット還元相のガス輸送定数

概要

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The gas transport parameters based on the dusty gas model were directly measured by the Wicke-Kallenbach method for the respective reduced phases of iron oxide. The samples were acid and basic iron oxide pellets and they were reduced at 850,950,1050℃ with CO-CO_2 gas mixtures stepwisely from hematite to magnetite, magnetite to wustite and finally wustite to iron. The measured values were also compared with those predicted based on the pore-size distribution data measured by a mercury porosimeter. The results are summarized as follows. 1) The measured parameters have no clear tendency of increasing with reduction temperature increasing. 2) The predicted and measured values have good coincidence with each other except for the unreduced phase (hematite) and the reduced phases accompanied by crack formation during reduction.dusty gas modelWicke-Kallenbachgas transport parameteresiron oxide pelletreduced phasegas diffusivityporous media
東北大学の論文
1993-03-30