Document Type and Number:
Japanese Patent JPH0465017
Kind Code:
B2
Abstract:
A process for the preparation of zirconia hydrate from zirconia by reaction of the latter with solid sodium hydroxide at 550 DEG -1,400 DEG C. to form Na zirconate; hydrolysis of the latter to form a suspension of zirconia hydrate in aqueous sodium hydroxide; separation of most of the aqueous sodium hydroxide; treatment of the zirconia hydrate containing residual aqueous sodium hydroxide with an ammonium salt; and separation, washing and dewatering of the purified zirconia hydrate obtained. The zirconia hydrate can be used for the preparation of zirconium compounds.
Inventors:
JOZEFU RUKAZAN
DANIERU URUFUAA
PIEERU FUERURANDA
DANIERU URUFUAA
PIEERU FUERURANDA
Application Number:
JP6778089A
Publication Date:
October 16, 1992
Filing Date:
March 22, 1989
Export Citation:
Assignee:
YUUROPEENU DO PURODEYUI REFURAKUTEERU SOC
International Classes:
C01G25/02
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