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A kind of 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 increased cleaning frequency of steam powder bag filters, incomplete organic coating, and low film coating rate of organic agents, so as to reduce the cleaning system frequency , reduce surface free energy, weaken the effect of surface polarity

Active Publication Date: 2021-10-19
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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  • A kind of organic coating treatment method of titanium dioxide
  • A kind of organic coating treatment method of titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) A titanium dioxide steam powder processing system is adopted, which includes a steam powder silo 1 and an organic silicon material tank 8. The outlet of the steam powder silo 1 is connected with a screw conveyor 2 and a steam powder machine 3 in sequence. The discharge port of the powder 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 silicon material tank 8 passes through The pipeline is connected with an atomizing spray gun 9, 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 organosilicon material tank 8 and the atomizing spray gun 9, so that the organic agent flow tends to be stable. An organic agent inlet 401 is provided on the conveying ascending pipeline 4 close to the outlet of the steam ...

Embodiment 2

[0026] 1) A titanium dioxide steam powder treatment system is adopted, which includes a steam powder silo 1, an organic silicon 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, a steam powder machine 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 near the discharge port of the steam powder machine 3, and the organic agent The discharge port of the silicon material 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. A diaphragm pump 10 and a damper 11 are successively arranged on the pipeline between the atomizing spray gun 9, so that the flow of the organic agen...

Embodiment 3

[0030]1) A titanium dioxide steam powder processing system is adopted, which includes a steam powder silo 1 and an organic silicon material tank 8. The outlet of the steam powder silo 1 is connected with a screw conveyor 2 and a steam powder machine 3 in sequence. The discharge port of the powder 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 silicon material tank 8 passes through The pipeline is connected with an atomizing spray gun 9, 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 organosilicon material tank 8 and the atomizing spray gun 9, so that the organic agent flow tends to be stable. An organic agent inlet 401 is provided on the conveying ascending pipeline 4 close to the outlet of the steam p...

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Abstract

An organic coating treatment method of titanium dioxide, the steps are: after the titanium dioxide is subjected to steam powder treatment by a steam powder machine, titanium dioxide fine powder is obtained, and then, the titanium dioxide fine powder enters the conveying ascending pipeline from the discharge port of the steam powder machine; After the organic coating agent in the silicon material tank is atomized by the atomizing spray gun, the nozzle of the atomizing spray gun is sprayed into the conveying ascending pipeline through the organic agent inlet, and the titanium dioxide organic agent coated with steam powder treated in the conveying ascending pipeline , the total amount of organic agent added accounts for 0.4% of the weight of titanium dioxide, and the addition speed is controlled at 0.01m 3 / h~0.013m 3 / h; the pressure of the atomizing spray gun is controlled at 0.3Mpa ~ 0.5Mpa, and it is sent to the powder bag filter for gas separation, and the organic coated titanium dioxide is sent to the finished product silo from the bottom outlet of the powder bag filter. The advantages are: the process is reasonable, the coating effect is good, the organic agent is evenly coated on the surface of the titanium dioxide, and the product quality is qualified and stable.

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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Patent Type & Authority Patents(China)
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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