Spherical alumina particles and production process thereof

Details Spherical alumina particles and production process thereof Spherical alumina particles and production process thereof

2005-05-03

2005-05-03

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C423S625000, C524S437000, C501S153000

Reexamination Certificate

active

06887811

ABSTRACT:
A process for producing roundish alumina particles includes heating at 1,000 to 1,600° C. a composition containing at least one of electrofused alumina and sintered alumina having a mean particle size greater than 35 μm, and at least one species selected from the group consisting of a halogen compound, a boron compound and an alumina hydrate; and crushing the composition.

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