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Titanium dioxide concentration process

A technology, 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: 2021-07-23
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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  • Titanium dioxide concentration process
  • Titanium dioxide concentration process

Examples

Experimental program
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Embodiment 1

[0043] see figure 1 The evaporation module includes a light titanium tank 1, a heat exchanger 2, an evaporation chamber 3, a concentrated titanium tank 4, a cyclone separator 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 at the bottom of the evaporation chamber 3. The steam inlet of the heat exchanger 2 is connected with steam, and the steam outlet of the heat exchanger 2 is connected with the steam inlet of the evaporation chamber 3 . The liquid outlet 33 of the evaporation chamber 3 is connected with the concentrated titanium tank 4, and the steam outlet of the evaporation chamber 3 is connected with the steam inlet of the cyclone separator 5. The liquid outlet 33 of the cyclone separator 5 is connected with the concentrated titanium tank 4, the steam outlet ...

Embodiment 2

[0047] The difference between this embodiment and the first embodiment lies in the further improvement of the structures of the heat exchanger 2 and the evaporation chamber 3 , and the improvements 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 coated with an insulating material, such as polyurethane, and the cylindrical shell 21 is vertically arranged. The shell 21 is provided with a first steam port 211, the first steam port 211 communicates with the inner wall of the shell 21, and there are two first steam ports 211, and the two first steam ports 211 are respectively set on the shell 21 At the upper and lower ends, when steam is connected to the two first steam ports 211 , the steam at both ends of the cylindrical shell 21 is opposed in the middle ...

Embodiment 3

[0053] The embodiment of the present application discloses a titanium dioxide concentration process, referring to Figure 5 , the titanium dioxide concentration process includes the following steps: a, heat exchange, the light titanium solution 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 thick titanium tank 4; c, condensation, the steam derived in the cyclone separator 5 is passed into steam condensation Condensate in the condenser, and guide the acid semi-dehydration into the steam condenser for heating.

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

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Abstract

The invention relates to the field of titanium dioxide production, and discloses a titanium dioxide concentration system and a titanium dioxide concentration process, the titanium dioxide concentration system comprises an evaporation module for concentrating light titanium liquid, a condensation module and a heat recovery module; the evaporation module comprises a dilute titanium tank, a heat exchanger, an evaporation chamber, a concentrated titanium tank, a cyclone separator, a primary steam condenser, a secondary steam condenser and a vacuum pump; the dilute titanium tank is connected with the heat exchanger which is connected with the evaporation chamber; the heat exchanger is connected with steam and is connected with the evaporation chamber; the evaporation chamber is connected with the concentrated titanium tank, and the evaporation chamber is connected with the cyclone separator; the cyclone separator is connected with the concentrated titanium tank, the cyclone separator is connected with the primary steam condenser, and the primary steam condenser is connected with the vacuum pump; and the secondary steam condenser is connected with the primary steam condenser, and the secondary steam condenser is connected with the vacuum pump. The method has the effect of relieving the problem that concentration system equipment is corroded by acidic semi-dehydration.

Description

technical field [0001] This 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 the total white pigment usage. From a global perspective, more than 90% of the mined titanium ore is used for 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 U.S. dollars based on a unit price of 2,000 U.S. dollars per ton. It is the third largest inorganic chemical product after synthetic ammonia and phosphoric acid. Titanium dioxide production processes mainly include sulfuric acid method and chlorination method. [0003] The titanium dioxide production process of the sulfuric acid method mainly includes: raw ore preparati...

Claims

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Application Information

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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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