Method for producing alpha-alumina particle

Details Method for producing alpha-alumina particle Method for producing alpha-alumina particle

2005-03-10

2010-12-28

Bos, Steven (Department: 1793)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C051S309000

Reexamination Certificate

active

07858067

ABSTRACT:
The present invention provides a method of producing an α-alumina particle. The method of producing an α-alumina particle comprises steps of:(1) heating a mixture containing an amorphous alumina and a pyrolyzable salt at temperature of not less than the temperature at which the pyrolyzable salt is decomposed, and less than the temperature at which the amorphous alumina transforms to α-alumina; and(2) calcining the resultant under a partial pressure of water vapor of about 600 Pa or less.

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