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 form, and high production cost, and achieve good particle dispersion and low cost. The effect of low and complete particle morphology

Inactive Publication Date: 2010-09-29
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Abstract
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Problems solved by technology

However, this process method has problems such as complex process, high production cost, easy agglomeration of zirconia particles, and incomplete crystal form.

Method used

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  • Preparation method of zirconium dioxide powder
  • Preparation method of zirconium dioxide powder

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Experimental program
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Embodiment 1

[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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Abstract

The invention relates to a preparation method of zirconium dioxide powder, comprising the following steps: A. dissolving zirconium oxychloride into deionized water, and controlling mass ratio of the zirconium oxychloride and the deionized water to be 4:(21-35); B. dropwise adding ammonia water into mixed solution in the step A, and controlling mole ratio of the ammonia water and the zirconium oxychloride to be (1.8-3.7):1; C. carrying out washing, pressing and filtering or centrifugal separation on zirconium hydroxide hydrogel in the step B to obtain zirconium hydroxide gel; D. drying the zirconium hydroxide gel of the step C to obtain zirconium hydroxide, and calcining the zirconium hydroxide to obtain zirconium dioxide; E. mixing the zirconium dioxide in the step D with grinding medium and water and carrying out wet grinding on the mixture; and F. drying the zirconium dioxide slurry in the step E to prepare the zirconium dioxide powder. The zirconium dioxide powder product produced by the method has good particle monodispersity, complete particle form, concentrating distribution of particle size, high purity and controllable particle size and can realize low cost when in large-scale production of the zirconium dioxide.

Description

technical field [0001] The invention relates to a preparation method of an information functional ceramic material, in particular the invention relates to a preparation method of a zirconium dioxide powder material. Background technique [0002] With the development of information technology, information functional ceramic technology is also changing with each passing day. Chinese patent application CN200510090074.X discloses a manufacturing method of zirconia nanopowder material, which includes the following process steps: preparation of zirconium salt solution and ammonia solution, preparation of organic solution, mixing and emulsification, ultrasonic dispersion, distillation and Washing and calcining mainly use the reaction of zirconium salt and ammonia water in the microemulsion to prepare monodisperse spherical zirconia nanopowder. Using the microemulsion droplets in the water / oil-soluble surfactant / organic water-in-solvent microemulsion system as the nano-micro-reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/626
Inventor 赵兴国蒋训莎汤全忠刘艳丽林滟新聂晓明
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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