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Titanium dioxide airflow crushing method and apparatus

A technology of jet pulverization and jet pulverizer, which is applied in chemical instruments and methods, treatment of dyed organosilicon compounds, treatment of inorganic pigments, etc., can solve the problems of difficult measurement, affecting the amount of organic treatment agents, and affecting the pigment performance of titanium dioxide products. , to achieve the effect of full contact with the material and improve the dispersion performance

Active Publication Date: 2017-03-15
SICHUAN LOMON TITANIUM IND CO LTD
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AI Technical Summary

Problems solved by technology

[0012] Since the amount of organic treatment agent added per ton of material is only 5kg, accounting for 0.5% of the total weight, and the solid semi-finished powder itself is difficult to measure, how to ensure that the organic treatment agent is fully mixed with the gas powder base material has always been a problem. A major technical problem faced by the white powder factory directly affects the amount of organic treatment agent added, the dispersion performance of titanium dioxide products, and then affects the performance of the pigment performance of titanium dioxide products

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  • Titanium dioxide airflow crushing method and apparatus
  • Titanium dioxide airflow crushing method and apparatus
  • Titanium dioxide airflow crushing method and apparatus

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Embodiment

[0041] Such as figure 2 and image 3 As shown, adopt the method base material of the present invention to carry out jet pulverization: jet pulverizer and dust collection system are preheated with superheated steam until the system is stable, simultaneously open the base material inlet on the long feed pipe and the steam main pipe. Organic treatment agent feed tube. The base material is fed into the long feeding pipe through the feeding screw, and the organic treatment agent is injected into the steam main pipe through the metering pump and the Venturi principle. Steam enters the crushing chamber. Maintain the crushing steam pressure at 1.5MPa, feed steam at 1.0MPa, bag filter temperature at 200°C, gas-solid ratio at 2.0, organic treatment agent / TiO2=0.005 (mass ratio), jet mill feed rate at 2.0t / h, and the system runs stably until Produce 2000t products, according to a batch number of 20 tons, test the performance and dispersibility of the product pigments.

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Abstract

The invention relates to a titanium dioxide post-treatment technology, and concretely discloses a titanium dioxide airflow crushing method. The method comprises the following steps: 1, sending crude titanium dioxide into a post-treatment process in order to produce a base material; 2, preheating an airflow crushing device; 3, conveying the base material into the airflow crusher, and adding a metered amount of an organic treatment agent into an organic treatment agent feeding tube arranged on a superheated steam pipeline; and 4, collecting a product after normal discharging of a dust collecting system. The invention also discloses a titanium dioxide airflow crushing apparatus. The organic treatment agent feeding tube is arranged on the superheated steam pipeline to realize premixing of the organic treatment agent and superheated steam. The method and the apparatus have the following advantages: 1, the uniform mixing degree of the organic treatment agent and the material in the airflow crushing process is improved, and the dispersion performance of the titanium dioxide is effectively improved; and 2, the method is simple to enforce, and is easy to promote.

Description

technical field [0001] The invention relates to a titanium dioxide production process and equipment, in particular to a titanium dioxide post-treatment method and equipment. Background technique [0002] Titanium dioxide is chemically stable and does not react with most substances under normal circumstances. There are three crystallizations of titanium dioxide in nature: brookite, anatase and rutile. The brook titanium type is an unstable crystal type and has no industrial application value. The anatase type (Anatase) is referred to as type A, and the rutile type (Rutile) is referred to as type R. Both have stable crystal lattices and are important white pigments and porcelain glazes. Compared with other white pigments, it has superior whiteness, tinting strength, hiding power, weather resistance, heat resistance, and chemical stability, especially non-toxic, and is currently the best white pigment in the world. Applied in paint, plastic, paper making, printing ink, chemic...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/04C09C3/08C09C3/10C09C3/12B02C19/06B02C23/00
CPCB02C19/06B02C23/00C09C1/3623C09C1/3669C09C1/3676C09C1/3684C09C1/3692C09C3/006
Inventor 代堂军姚恒平朱全芳孙润发
Owner SICHUAN LOMON TITANIUM IND CO LTD
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