Process for the manufacture of zirconium oxide hydrate from...

Details Process for the manufacture of zirconium oxide hydrate from... Process for the manufacture of zirconium oxide hydrate from...

C - Chemistry, Metallurgy

01

G

23/252

C01G 25/02 (2006.01)

Patent

CA 1325879

ABSTRACT The invention relates to inorganic chemistry. It relates to a process for the preparation of zirconia hydrate from granular crystallized ZrO2 by reaction of the latter with solid sodium hydroxide at 550-1,400°C to form Na zirconate, by hydrolysis of the latter to form a suspension of zirconia hydrate in aqueous sodium hydroxide, by separation of most of the aqueous sodium hydroxide, by treatment of the zirconia hydrate containing residual aqueous sodium hydroxide with an ammonium salt, and by separation, washing and dewater- ing of the purified zirconia hydrate obtained. The zirconia hydrate can be used for the prepara- tion of zirconium compounds.

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