The effect of various reaction parameters on carbothermal reduction of kaolinite

Panda, PK and Mariappan, L and Kannan, TS (1999) The effect of various reaction parameters on carbothermal reduction of kaolinite. Ceramics International, 25 (5). pp. 467-473.

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    Abstract

    Preliminary studies on the carbothermal reduction of kaolinite (A1 203 .2SiO2 .2H2 0) in argon atmosphere are reported. The effect of various reaction parameters e.g. temperature (1550-1700xB0;C) and time (1-3 h) of the reaction, nature and source of carbon, e.g. activated charcoal (sp. surface area, 1000 m2 /gm) and carbon black (sp. surface area, 300 m2/gm), addition of reaction catalysts (FeC13 , CoC12) and variation of mole ratios of carbon to silica (4.5-9) and state of mixing of carbon and kaolinite, etc., on carbothermal reduction have been investigated.It is observed that the reaction is completed at 1700xB0;C in 1 h or at 1650xB0;C in 3 h. Higher mole ratios of carbon, addition of catalysts, pelletisation of the reactants and longer reaction times accelerate the reaction13; rate at a given temperature.

    Item Type: Journal Article
    Additional Information: Copyright belongs to Elsevier
    Uncontrolled Keywords: Carbothermal reduction;Kaolinite;Carbon black
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: Materials Science Division, Materials Science Division, Materials Science Division
    Depositing User: Mr. N A
    Date Deposited: 07 Jun 2006
    Last Modified: 03 May 2012 16:16
    URI: http://nal-ir.nal.res.in/id/eprint/1505

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