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Oxidation Kinetics of Graphite Phase in Magnesia‐Carbon Refractories
Author(s) -
Li Xiangmin,
Rigaud Michel,
Palco Stefan
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08423.x
Subject(s) - graphite , carbon fibers , kinetics , materials science , diffusion , oxygen , magnesium , brick , phase (matter) , chemical engineering , metallurgy , mineralogy , composite material , thermodynamics , chemistry , organic chemistry , physics , quantum mechanics , composite number , engineering
Decarbonization of resin‐bonded magnesia‐graphite refractories, as one of the most important parameters for brick lining performance in service, has been studied kinetically in the temperature range from 1000° to 1400°C in air, where carbon burnout by oxygen is the dominant decarbonizing mechanism. The rate of carbon burnout was followed by gas analysis, measuring the amount of CO converted into CO 2 as a function of reaction time. The experimental results have been rationalized using a mathematical model proposed for the oxidation kinetics, wherein the rate of inward diffusion of oxygen from the exterior atmosphere is predominant.