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Organic coating treatment method of titanium dioxide

A titanium dioxide and treatment method technology, which is applied in the field of organic coating treatment of titanium dioxide, can solve the problems of unstable dispersion, low film coating rate of organic agents, and increased amount of hanging materials, so as to reduce the frequency of cleaning systems, reduce impurity content, Improve the performance of the run cycle

Active Publication Date: 2020-01-07
中信钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is reported from the actual production indicators that the organic coating of this method is not complete, and the dispersion in different systems is not stable.
In addition, due to the low coating rate of organic agents, the amount of material hanging on the wall of the steam powder bag filter increases when it is subsequently filtered by the steam powder bag filter, the cleaning frequency of the steam powder bag filter increases, and the subsequent return pressure of the system is high.

Method used

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  • Organic coating treatment method of titanium dioxide
  • Organic coating treatment method of titanium dioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) adopt titanium dioxide steam powder treatment system, this system comprises steam powder silo 1 and organic material tank 8, the outlet of described steam powder silo 1 is connected with screw conveyor 2, steam powder machine 3 successively, in steam powder The discharge port of the machine 3 is connected with a powder bag filter 6 through the conveying ascending pipeline 4, and the discharge port of the powder bag filter 6 is connected with a finished product bin 7; the discharge port of the organic material tank 8 is connected by a pipeline An atomizing spray gun 9 is arranged, and the atomizing spray gun 9 is a steam atomizing spray gun; a diaphragm pump 10 and a damper 11 are arranged successively on the pipeline between the organic material tank 8 and the atomizing spray gun 9, so that the flow rate of the organic agent tends to Yu stable. An organic agent inlet 401 is provided on the conveying ascending pipeline 4 close to the outlet of the steam powder machine...

Embodiment 2

[0026] 1) A titanium dioxide steam powder processing system is adopted, which includes a steam powder silo 1, an organic material tank 8 and an atomizing spray gun 9, and the outlet of the steam powder silo 1 is connected with a screw conveyor 2 and a steam powder machine successively. 3. The steam powder bag filter 6 is connected to the discharge port of the steam powder machine 3 through the conveying ascending pipeline 4, and an organic agent inlet 401 is provided on the conveying ascending pipeline 4 close to the discharge port of the steam powder machine 3. The organic material The discharge port of the tank 8 is communicated with the feed port of the atomizing spray gun 9 through a pipeline, and the nozzle of the atomizing spray gun 9 is communicated with the organic agent inlet 401 on the conveying ascending pipeline 4, and the organic material tank 8 and the atomizing The pipeline between the spray guns 9 is provided with a diaphragm pump 10 and a damper 11 in sequence,...

Embodiment 3

[0030] 1) adopt titanium dioxide steam powder treatment system, this system comprises steam powder silo 1 and organic material tank 8, the outlet of described steam powder silo 1 is connected with screw conveyor 2, steam powder machine 3 successively, in steam powder The discharge port of the machine 3 is connected with a powder bag filter 6 through the conveying ascending pipeline 4, and the discharge port of the powder bag filter 6 is connected with a finished product bin 7; the discharge port of the organic material tank 8 is connected by a pipeline An atomizing spray gun 9 is arranged, and the atomizing spray gun 9 is a steam atomizing spray gun; a diaphragm pump 10 and a damper 11 are arranged successively on the pipeline between the organic material tank 8 and the atomizing spray gun 9, so that the flow rate of the organic agent tends to Yu stable. An organic agent inlet 401 is provided on the conveying ascending pipeline 4 close to the outlet of the steam powder machine...

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Abstract

The invention relates to an organic coating treatment method of titanium dioxide, which comprises the following steps: carrying out steam powder treatment on titanium dioxide by a steam powder machineto obtain titanium dioxide fine powder, and feeding the titanium dioxide fine powder into a conveying ascending pipeline from a discharge port of the steam powder machine; atomizing an organic coating agent in an organic silicon material tank by using an atomizing spray gun; spraying the atomized organic coating agent into the conveying ascending pipeline using a nozzle of the atomizing spray gunthrough an organic agent inlet, coating titanium dioxide organic agent obtained through steam powder treatment in the conveying ascending pipeline, wherein the total adding amount of an organic agentaccounts for 0.4% of the weight of titanium dioxide, and the adding speed is controlled to be 0.01 m<3> / h-0. 013 m<3> / h; the pressure of the atomization spray gun is controlled to be 0.3-0.5 Mpa; feeding an obtained product into a steam powder bag filter for gas separation, and feeding organically coated titanium dioxide into a finished product bin from an outlet in the bottom of the steam powderbag filter. The method has the advantages of reasonable process, good coating effect, uniform coating of the organic agent on the surface of titanium dioxide, and qualified and stable product quality.

Description

technical field [0001] The invention belongs to the field of titanium dioxide production, in particular to an organic coating treatment method of titanium dioxide. Background technique [0002] Titanium dioxide, commonly known as titanium dioxide, is widely used in coatings, paints, plastics, paper, cosmetics and pharmaceutical industries. In the production process of rutile titanium dioxide, combined with the needs of direct customers, professional requirements are put forward for the application of titanium dioxide such as weather resistance, dispersion and hiding power, and inorganic coating and organic coating are required. The main function of the inorganic coating is to improve the weather resistance and chemical stability of titanium dioxide. Organic surface treatment can improve the wettability, dispersibility and rheological properties of titanium dioxide in various dispersion media. [0003] At present, the main method of organic coating in major titanium dioxide...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/08C09C3/10C09C3/12
CPCC09C1/3669C09C1/3676C09C1/3684C09C1/3692
Inventor 臧颖波陶春雷谷俊波马玉杰张亮张炳敬军
Owner 中信钛业股份有限公司
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