Process for producing aluminum oxide powder
AssigneeFujimi Incorporated
InventorsHitoshi Kurihara, Kouichirou Ootsu
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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.
Claims12
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.
A process for producing an aluminum oxide powder, which comprises pulverizing electrofused alumina by a batch system to a powder having an average particle size of R1 and classifying the obtained pulverized product to obtain an aluminum oxide powder having an average particle size of R, wherein the above R1 and R satisfy the following relation:
- 0.1≦R/R1≦3.
Dependencies are inferred from the claim text.