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Production method of zirconium hydroxide

A zirconium hydroxide and production method technology, applied in chemical instruments and methods, inorganic chemistry, zirconium compounds, etc., can solve the problems of slurry viscosity, uneven material content, and low purity, so as to improve the water passing efficiency and reduce the The effect of water consumption

Pending Publication Date: 2020-07-17
青岛天尧新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slurry produced in the production process is viscous and not easy to dehydrate. It takes a lot of deionized water to remove impurity ions; this kind of production process can only produce zirconium hydroxide, and its zirconia content is less than 30%. Difficult, not high purity
[0005] Zirconium hydroxide with a content of 36% and above generally needs to be obtained by a drying process, which wastes production costs and the material content is uneven

Method used

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  • Production method of zirconium hydroxide

Examples

Experimental program
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Effect test

Embodiment 1

[0024] as attached figure 1 Shown, a kind of production method of zirconium hydroxide comprises the following steps:

[0025] A, prepare zirconium oxychloride solution, dissolve the zirconium oxychloride of 1kg in the demineralized water of 3kg, filter in the storage tank after dissolving;

[0026] B. Stir and mix 10% ammonia water and 30% sodium hydroxide according to the mass ratio of 5:1 to obtain an alkaline precipitant;

[0027] C, the zirconium oxychloride solution of weighing 1kg and the alkaline precipitation agent of 1.8kg enter in the first elevated tank 1 and the second elevated tank 2;

[0028] D, add 0.1kg of demineralized water in the reactor, through the control valve, make the solution in the first elevated tank 1 and the second elevated tank 2 flow into the reactor 3 simultaneously within 2 hours, and age for 6 hours;

[0029] E, supplement the zirconium oxychloride solution of 0.2kg in the first elevated tank 1, by controlling the valve, the zirconium oxych...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is:

[0034] In step B, 10% ammonia water and 30% sodium hydroxide are stirred and mixed according to the mass ratio of 8:1 to obtain an alkaline precipitant.

Embodiment 3

[0036] The difference between this embodiment and Embodiment 1 is:

[0037] In step B, 10% ammonia water and 30% sodium hydroxide are stirred and mixed according to the mass ratio of 6:1 to obtain an alkaline precipitant.

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Abstract

The invention relates to the technical field of zirconium hydroxide production processes, in particular to a production method of zirconium hydroxide. The method comprises the steps of zirconium oxychloride solution preparation, weighing and proportioning, flow control reaction, aging, zirconium oxychloride solution weight supplement, water washing and centrifugation. The proper reaction speed isdesigned by adjusting the use ratio of zirconium oxychloride and ammonia water / sodium hydroxide. Zirconium hydroxide particles are generated through a batch reaction, loose powdery zirconium hydroxidewith Cl<-> sizes of smaller than 200 ppm is obtained through washing with 3 times of deionized water, and the content of zirconium oxide can reach 40%.

Description

technical field [0001] The invention relates to the technical field of zirconium hydroxide production technology, in particular to a production method of zirconium hydroxide. Background technique [0002] Zirconium hydroxide is a water-insoluble, slightly alkaline amphoteric hydroxide. It is non-toxic, tasteless, insoluble or slightly soluble in water, insoluble in alcohol, alkali and ammonium salt solution, and easily soluble in inorganic acids such as hydrochloric acid. It decomposes into zirconium dioxide and water at 500°C. Due to its amphoteric properties, it can react with acids and bases, and form crystalline ortho-zirconates with strong bases when molten. The first zirconium hydroxide obtained by the action of zirconium salt solution and caustic soda (or ammonia) solution is called α-zirconic acid, which can be dissolved in dilute acid. The β-zirconic acid precipitated under heating conditions is insoluble in water and acid. [0003] Zirconium hydroxide is used in...

Claims

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Application Information

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IPC IPC(8): C01G25/00
CPCC01G25/00C01P2004/61C01P2006/80
Inventor 闫家臣宋九洲
Owner 青岛天尧新材料有限公司
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