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A titanium dioxide concentration process

A process, titanium dioxide technology, applied in the field of titanium dioxide production, can solve problems such as acidic semi-dehydration and easy-to-corrosion concentration system equipment

Active Publication Date: 2022-08-02
广西顺风钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the concentration process in the above-mentioned related art, the prepared concentrated titanium solution is acidic after hydrolysis, and the acidic semi-dehydration after hydrolysis needs to be heated before rinsing. Therefore, in the existing concentration process, most of the hydrolyzed The final acidic semi-dehydration is heated by the heat in the concentration process, so the acidic semi-dehydration is easy to corrode the concentration system equipment

Method used

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  • A titanium dioxide concentration process
  • A titanium dioxide concentration process
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Experimental program
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Embodiment 1

[0043] see figure 1 , the evaporation module includes a thin titanium tank 1, a heat exchanger 2, an evaporation chamber 3, a concentrated titanium tank 4, a cyclone 5, a primary steam condenser 61, a secondary steam condenser 62 and a vacuum pump 7. The outlet of the light titanium tank 1 is connected to the liquid inlet of the heat exchanger 2 , and the liquid outlet 33 of the heat exchanger 2 is connected to the liquid inlet of the bottom of the evaporation chamber 3 . The steam inlet of the heat exchanger 2 is connected to steam, and the steam outlet of the heat exchanger 2 is connected to the steam inlet of the evaporation chamber 3 . The liquid outlet 33 of the evaporation chamber 3 is connected to the concentrated titanium tank 4 , and the steam outlet of the evaporation chamber 3 is connected to the steam inlet of the cyclone separator 5 . The liquid outlet 33 of the cyclone separator 5 is connected to the concentrated titanium tank 4, the steam outlet of the cyclone ...

Embodiment 2

[0047] The difference between this embodiment and the first embodiment is only the further improvement of the structures of the heat exchanger 2 and the evaporation chamber 3 , and the improvement of the heat exchanger 2 and the evaporation chamber 3 will be described in detail below.

[0048] refer to figure 2 , the heat exchanger 2 includes a cylindrical shell 21 and a heat exchange tube 22. The cylindrical shell 21 is in the shape of a barrel, and its outer wall is covered with a thermal insulation material, such as polyurethane, and the cylindrical shell 21 is arranged vertically. The cylinder shell 21 is provided with a first steam port 211, the first steam port 211 communicates with the inner side wall of the cylinder shell 21, and there are two first steam ports 211 in total, and the two first steam ports 211 are respectively arranged in the cylinder shell 21 At the upper and lower ends, when the two first steam ports 211 are both connected to steam, the steam at both ...

Embodiment 3

[0053] The embodiment of the present application discloses a titanium dioxide concentration process, refer to Figure 5 , the titanium dioxide concentration process includes the following steps: a, heat exchange, the thin titanium liquid is passed into the heat exchanger 2 to be heated, and then passed into the evaporation chamber 3; b, separation, the secondary steam generated in the evaporation chamber 3 is introduced into Separation in the cyclone separator 5, so that the titanium liquid solute contained in the secondary steam is separated from the steam, and the titanium liquid solute is introduced into the concentrated titanium tank 4; c, condensation, the steam derived from the cyclone separator 5 is passed into the steam to condense It is condensed in the condenser, and the acid semi-dehydrated is introduced into the steam condenser for heating.

[0054] The implementation principle of a titanium dioxide concentration system and process in the embodiment of the present ...

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Abstract

The present application relates to the field of titanium dioxide production, and discloses a titanium dioxide concentration system and process, wherein a titanium dioxide concentration system includes an evaporation module, a condensation module and a heat recovery module for concentrating thin titanium liquid; the evaporation module includes a thin Titanium tank, heat exchanger, evaporation chamber, concentrated titanium tank, cyclone separator, primary steam condenser, secondary steam condenser and vacuum pump; the thin titanium tank is connected with the heat exchanger, and the heat exchanger is connected with the evaporation chamber; The heat exchanger is connected to the steam, the heat exchanger is connected to the evaporation chamber; the evaporation chamber is connected to the concentrated titanium tank, and the evaporation chamber is connected to the cyclone separator; the cyclone separator is connected to the concentrated titanium tank, and the cyclone separator is connected to the primary steam condenser. The primary steam condenser is connected with the vacuum pump; the secondary steam condenser is connected with the primary steam condenser, and the secondary steam condenser is connected with the vacuum pump. The present application has the effect of alleviating the problem of corrosion of concentration system equipment by acid semi-dehydration.

Description

technical field [0001] The present application relates to the field of titanium dioxide production, in particular to a titanium dioxide concentration system and process. Background technique [0002] Titanium dioxide is an important inorganic chemical raw material. It is non-toxic and harmless to health. It is the most important white pigment, accounting for 80% of all white pigments used. Worldwide, more than 90% of the titanium ore mined is used in the production of TiO2 pigments. In 1998, the world's total consumption of TiO2 pigments was 3.55 million tons, with a total value of 7 billion US dollars at a unit price of 2,000 US dollars per ton. It is the third largest inorganic chemical product after synthetic ammonia and phosphoric acid. Titanium dioxide production process mainly includes sulfuric acid method and chlorination method. [0003] The titanium dioxide production process of the sulfuric acid method mainly includes: raw ore preparation, preparation of titanium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/00B01D1/30B01D45/16B01D53/00F28B1/02C01G23/00C01G23/053
CPCB01D1/00B01D1/30B01D45/16B01D53/002F28B1/02C01G23/008C01G23/0532Y02P20/50Y02P70/10
Inventor 罗勇
Owner 广西顺风钛业有限公司
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