Micronized zirconia and method for production thereof

Details Micronized zirconia and method for production thereof Micronized zirconia and method for production thereof

1985-08-06

1987-05-12

Carter, H. T.

Chemistry of inorganic compounds

With additive

423608, C01G 2502

Patent

active

046648941

ABSTRACT:
A method for the production of micronized zirconia by the addition of an alkali to an aqueous solution of a zirconium salt or to a mixed aqueous solution of said zirconium salt and a stabilizer such as yttrium, calcium, and magnesium compounds, which method comprises carrying out the reaction for formation of a hydroxide by the addition of the alkali continuously in a flow type reaction system while keeping the pH of said reaction system at a fixed level, separating the hydroxide produced consequently by the reaction, and drying and calcining the separated hydroxide, and a zirconia-containing micronized particle which contains such stabilizer and has an average particle diameter of not more than 0.02 .mu.m.

REFERENCES:
patent: 3514252 (1970-05-01), Levy et al.
patent: 4520114 (1985-05-01), David
patent: 4543341 (1985-09-01), Barringer et al.

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