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Washing technology of titanium dioxide after inorganic surface treatment

A surface treatment, titanium dioxide technology, applied in inorganic pigment treatment, titanium dioxide, dyeing and washing, etc., can solve the problem of not being able to guarantee the washing process and accurate control at the same time, and achieve the effect of good washing repeatability and improving washing efficiency.

Inactive Publication Date: 2020-04-24
CHONGQING TITANIUM IND OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most laboratories use simple suction filtration devices for washing, which cannot guarantee accurate control of water temperature, washing time, and water volume during the washing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A. The slurry after inorganic surface treatment is matured in a heating mantle at 60-65°C;

[0027] B. After assembling the suction filtration device, spread 2 layers of medium-speed filter paper in the Buchner funnel, moisten it with distilled water, turn on the vacuum pump, and adjust the filter paper until the vacuum pump shows a pressure difference;

[0028] C. Control the total amount of washing water: the content of titanium dioxide in the slurry is 20mL: 1g, and the washing water temperature is 60°C. After transferring the cured slurry in step A to the funnel, add washing water to the funnel at a constant speed through the automatic water adding device. The speed of adding water depends on the specific situation, and keep the liquid level of the washing water in the funnel at 2 / 3 places. The experiment was divided into two groups, one group was not stirred during the washing process, recorded as sample 1; the stirring speed of the other group should not be too ...

Embodiment 2

[0033] A. The slurry after inorganic surface treatment is matured in a heating mantle at 60-65°C;

[0034] B. After assembling the suction filtration device, spread 2 layers of medium-speed filter paper in the Buchner funnel, moisten it with distilled water, turn on the vacuum pump, and adjust the filter paper until the vacuum pump shows a pressure difference;

[0035] C. One group controls the total amount of washing water: the content of titanium dioxide in the slurry is 20mL: 1g, the temperature of the washing water is 60°C, which is recorded as sample 3; one group controls the total amount of washing water: the content of titanium dioxide in the slurry is 20mL: 1g, The temperature of the washing water is 50°C, which is recorded as sample 4. After transferring the cured slurry in step A to the funnel, add washing water to the funnel at a constant speed through the automatic water adding device, and stir while adding. At 2 / 3 of the height of the funnel, the stirring speed s...

Embodiment 3

[0040] A. The slurry after inorganic surface treatment is matured in a heating mantle at 60-65°C;

[0041] B. After assembling the suction filtration device, spread 2 layers of medium-speed filter paper in the Buchner funnel, moisten it with distilled water, turn on the vacuum pump, and adjust the filter paper until the vacuum pump shows a pressure difference;

[0042] C. One group controls the total amount of washing water: the content of titanium dioxide in the slurry is 20mL: 1g, the temperature of the washing water is 60°C, which is recorded as sample 5; one group controls the total amount of washing water: the content of titanium dioxide in the slurry is 10mL: 1g, The temperature of the washing water is 60°C, which is recorded as sample 6. After transferring the cured slurry in step A to the funnel, add washing water to the funnel at a constant speed through the automatic water adding device, and stir while adding. At 2 / 3 of the height of the funnel, the stirring speed s...

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Abstract

The invention discloses a washing technology of titanium dioxide after an inorganic surface treatment, and belongs to the technical field of titanium dioxide treatment. The invention provides a washing technology of titanium dioxide after inorganic surface treatment. The washing technology comprises the following steps: curing titanium dioxide slurry after an inorganic surface treatment, transferring the cured titanium dioxide slurry into a Buchner funnel, adding washing water into the funnel at a constant speed, keeping the liquid level of the washing water in the funnel at 1 / 3-2 / 3 of the height of the funnel, stirring while adding; stopping stirring and adding water when the use amount of the washing water reaches half of the total use amount, continuously adding the washing water to 1 / 3-2 / 3 of the height of the funnel after the filter cake is formed; and when the washing water is completely added and a certain number of cracks appears on the surface of the filter cake, stopping washing. By controlling the temperature and dosage of the washing water and the stirring condition of adding the washing water, the washing technology after an inorganic surface treatment of titanium dioxide in a laboratory is more effective, a better washing effect is achieved, and the washing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide treatment, and in particular relates to a washing process after inorganic surface treatment of titanium dioxide. Background technique [0002] In the process of titanium dioxide experiment, after beating and dispersing titanium dioxide, inorganic surface treatment is often required. Under a certain temperature range and pH conditions, a certain amount of inorganic coating is carried out on titanium dioxide to improve the weather resistance and dispersion performance of titanium dioxide. After the inorganic surface treatment of titanium dioxide, a key step is washing. The main function is To remove soluble salts in materials, such as sodium ions and sulfate ions, the washing effect is often characterized by the electrical conductivity after washing. The resistivity value of titanium dioxide products is also an important quality control index. At present, most laboratories use simple suct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/00C01G23/047
CPCC01G23/047C01P2006/40C09C1/3607C09C3/003
Inventor 赵北东景建林肖勇丽柳令曹磊
Owner CHONGQING TITANIUM IND OF PANGANG GROUP
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