Preparation method of zirconium dioxide powder
A technology of zirconium dioxide and zirconium oxychloride, which is applied in the field of preparation of zirconium dioxide powder materials, can solve the problems of easy agglomeration of zirconium dioxide particles, incomplete crystal shape and high production cost, and achieves good particle monodispersity and low cost. Low, complete particle morphology effect
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[0011] a. 161g zirconium oxychloride is dissolved in 845g deionized water;
[0012] b. Add 1g of water-soluble auxiliary agent to the above-mentioned zirconium oxychloride solution;
[0013] c. Add 61.3g of ammonia water with a concentration of 25% dropwise to the zirconia solution for reaction, while controlling the reaction temperature to 40°C, and then crystallize at a constant temperature of 40°C for 0.5hr after the ammonia water is added dropwise, and zirconium hydroxide water is generated after the reaction is completed gel;
[0014] d. Wash the zirconium hydroxide hydrogel with deionized water until the conductivity of the aqueous solution is 20 us / cm;
[0015] e. Through pressure filtration or centrifugation, zirconium hydroxide gel is obtained;
[0016] f. drying the zirconium hydroxide gel at 80°C to obtain zirconium hydroxide;
[0017] g. calcining the dried zirconium hydroxide at 700°C, and keeping the temperature at 700°C for 1.5hr, and calcining to obtain zirc...
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