Process for producing aluminum oxide powder

Details Process for producing aluminum oxide powder Process for producing aluminum oxide powder

2007-05-29

2007-05-29

Vanoy, Timothy C. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423SDIG015, C209S509000, C209S659000

Reexamination Certificate

active

11249267

ABSTRACT:
To provide a process for producing an aluminum oxide powder, whereby the content of impurities is controlled by a physical means. A process for producing an aluminum oxide powder, which comprises pulverizing electrofused alumina by a batch system and classifying the obtained pulverized product to obtain an aluminum oxide powder different in the content of impurities. It is possible to obtain aluminum oxide of high purity by pulverization to a smaller average particle size and separating a powder having a larger average particle size by classification.

REFERENCES:
patent: 5340781 (1994-08-01), Oda et al.
patent: 2005/0035230 (2005-02-01), Kanbara et al.
patent: 2005/0182172 (2005-08-01), Kamimura et al.
patent: 2001-180931 (2001-07-01), None
patent: 2003-12323 (2003-01-01), None

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