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Zirconium hydroxide solid-phase grinding synthesis method

A zirconium hydroxide and solid-phase grinding technology, which is applied in chemical instruments and methods, zirconium compounds, inorganic chemistry, etc., can solve the problems of low colloidal zirconia content in zirconium hydroxide, difficult hydrolysis of zirconium oxychloride, and high production costs. To achieve stable product quality, save the ingredients process, and reduce the effect of water consumption

Active Publication Date: 2010-05-19
JIANGXI KINGAN HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process is short, the prepared zirconium hydroxide has high purity, uniform particle size, and no auxiliary materials are needed, but the hydrolysis of zirconium oxychloride is difficult, the whole process is completed under high temperature and reduced pressure, and the energy consumption is high, and zirconium hydroxide can be obtained at the same time The content of colloidal zirconia is low, and it needs to further increase energy consumption during drying, so the production cost is high

Method used

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  • Zirconium hydroxide solid-phase grinding synthesis method

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Embodiment 1

[0014] The synthesis method of this embodiment is as follows: the first step, 1000Kg zirconia content is 35.5% zirconium oxychloride is added in the blender, and dispersant polyethylene glycol (molecular weight range 6000-7000) 6Kg is added, open the blender , mix for 30 minutes, and use steam to heat the pure water storage tank to 70°C; the second step, add 230Kg of solid industrial sodium hydroxide with a purity of 97% in the mixer; the third step, open the mixer, mix 30 minutes, after aging for 30 minutes, pour the material into the grinder, grind for 0.5 hours, transfer the ground material to the vacuum filter tank; the fourth step, add 70 °C pure water 2500L in the vacuum filter tank, soak After 15 minutes, use vacuum to dry the water, and add 2,500 liters of pure water at 70°C to the vacuum filter tank; step 5, repeat the rinsing twice according to the operation of step 4, transfer to a centrifuge for 15 minutes, and then pack to obtain hydrogen Zirconia products, produc...

Embodiment 2

[0016] The synthesis method of this embodiment is as follows: the first step, 1000Kg of zirconia content is 35.5% zirconium oxychloride is added in the blender, and dispersant polyethylene glycol (molecular weight range 6000-7000) 8Kg is added, and the blender is turned on , mix for 30 minutes, and use steam to heat the pure water storage tank to 80°C for washing and standby; the second step, add 250Kg of industrial solid sodium hydroxide with a purity of 97% to the mixer; the third step, start the mixing machine, mix the materials for 30 minutes, and pour the materials into the grinder after aging for 60 minutes. After grinding for 1 hour, transfer the ground materials to the vacuum filter tank; the fourth step is to add 40 ℃ pure 3000L of water, soaked for 25 minutes and drained, then add 3000L of pure water at 70°C to the vacuum filter tank; step 5, repeat the rinsing twice according to the operation of step 4, transfer to a centrifuge for 15 minutes and pack to obtain hydro...

Embodiment 3

[0018]The synthesis method of this embodiment is as follows: the first step, 1000Kg zirconia content is 35.5% zirconium oxychloride is added in the blender, and dispersant polyethylene glycol (molecular weight range 6000-7000) 10Kg is added, open the blender , mix for 30 minutes, and use steam to heat the pure water storage tank to 90°C; in the second step, add 240Kg of solid sodium hydroxide with a purity of 97% in the mixer; in the third step, turn on the mixer and mix for 45 After aging for 120 minutes, pour the material into the grinder, grind for 2 hours, and transfer the ground material to the vacuum filter tank. Step 4: Add 4000L of pure water, soak for 15 minutes, then drain, then add 4000L of water; Step 5, follow Step 4 and repeat washing twice, transfer to a centrifuge for 30 minutes and pack to obtain zirconium hydroxide product. The product mass is ZrO 2 (HfO 2 ): 38.35%, Na 2 O: 1.53%.

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Abstract

The invention discloses a zirconium hydroxide solid-phase grinding synthesis method. The method of high purity zirconium hydroxide comprises the following steps: adding zirconium hydroxide in a mixing machine, adding dispersant of which weight ratio to zirconium hydroxide is 0.005-0.02; adding solid sodium hydroxide in the mixing machine; starting the mixing machine for mixing and aging, pouring materials in a grinder, transferring the grinded materials into a vacuum suction filtration tank; pumping 40-90 DEG C of pure water of which weight ratio to the materials is 1-10:1 in a suction filtration tank, draw off water after soaking, adding 40-90 DEG C of pure water of which weight ratio to the materials is 1-10:1 again; and rinsing 2-8 times with pure water, transferring the product to a centrifuge to centrifuge for 10-30 minutes, and packaging to obtain the finished product. The method of the invention reduces the flow, simplified devices and reduces the water consumption; in addition, the devices are easy to operate and the production cost is reduced.

Description

technical field [0001] The invention relates to a method for synthesizing zirconium hydroxide, in particular to a method for synthesizing zirconium hydroxide by solid phase grinding. Background technique [0002] Zirconium hydroxide, or hydrated zirconia, is an amphoteric oxide that is insoluble in water and slightly alkaline. At present, its specific structure is still under study. Zirconium hydroxide can be used in the preparation of pigments, glass, dyes and other industries. In recent years, with the deepening of research, people have discovered more uses of zirconium hydroxide, because zirconium hydroxide Calcined zirconia has a large specific surface area (up to 200m 2 / g) It can be applied to adsorbents, such as the adsorption and removal of arsenic by loaded zirconium hydroxide resin, and the adsorption of zirconium hydroxide to sulfate ions. As an important chemical and metallurgical raw material, zirconium hydroxide is widely used, especially in the emerging zirc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/00
Inventor 罗方承邱才华孙小龙谌美玲
Owner JIANGXI KINGAN HI TECH
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