Method for producing an inorganic oxide powder

Details Method for producing an inorganic oxide powder Method for producing an inorganic oxide powder

2005-08-30

2005-08-30

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C241S005000

Reexamination Certificate

active

06936236

ABSTRACT:
An inorganic oxide powder is produced by a method which comprises a step of (i) introducing, into a dry-way pulverizer, an inorganic oxide in an amount of 100 parts by volume and air, nitrogen or a gas mixture thereof in an amount of from about 25,000 to about 160,000 parts by volume to pulverize the inorganic oxide by the dry-way pulverizer, or (ii) introducing, into a medium-stirring-type pulverizer, an inorganic oxide with a BET specific surface area of from about 1 to about 70 m2/g to pulverize the inorganic oxide by the medium-stirring-type pulverizer in a dry way at a specific energy consumption of from about 0.3 to about 1 kWh/kg. The inorganic oxide powder is capable of providing a ceramic with high density and high mechanical strength.

REFERENCES:
patent: 1896020 (1933-01-01), Shimadzu
patent: 3186648 (1965-06-01), Mandle et al.
patent: 4205964 (1980-06-01), Hill
patent: 4784333 (1988-11-01), Hikake et al.
patent: 4930707 (1990-06-01), Kashiwagi et al.
Japio Abstract, Japanese Publication No. 2000-246127, published Sep. 12, 2000.
Japio Abstract, Japanese Publication No. 06-047306, published Feb. 22, 1994.

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