Method for producing α-alumina powder

Details Method for producing α-alumina powder Method for producing α-alumina powder

2006-07-18

2006-07-18

Silverman, Stanley (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S111000, C423S631000

Reexamination Certificate

active

07078010

ABSTRACT:
A method for producing α-alumina powder is described. The method comprises the steps of removing water from a compound containing the following (1), (2), (3) and (4), and calcining the results:(1) α-alumina precursor,(2) seed crystal,(3) water,(4) nitrate ion in an amount of from 2.8 to 3.3 mol per mol of aluminum (Al) contained in the α-alumina precursor and the seed crystal.

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