Preparation of Zirconium Hydroxide and the Influence Factors of Its Main Content and Sodium Oxide Content
40%zirconium hydroxide was prepared from zirconium oxychloride and sodium hydroxide by direct precipitation method,the main content of zirconium hydroxide is closely related to the concentration of sodium hydroxide base,the feeding time of zirconium oxychloride,the sodium hydroxide temperature,the reaction temperature and the reaction time.The content of sodium oxide in zirconium hydroxide was closely related to the sodium hydroxide of zirconium oxychloride、the reaction temperature and washing conditions,but there was no significant correlation with reaction time.The optimum conditions for preparing 40%zirconium hydroxide were as follows:the concentration of sodium hydroxide is 32%,the sodium hydroxide of zirconium oxychloride is 1.6 times,the feeding time of zirconium oxychloride is 1 min,the sodium hydroxide temperature is 10℃,and the reaction temperature is 60℃,the reaction time is 20 min.
zirconia contentsodium oxide contentalkali concentrationfeed timesodium hydroxide temperaturereaction temperaturereaction time
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