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A kind of preparation method of high durability anti-powdering rutile type ultrafine titanium dioxide

An ultra-fine titanium dioxide, durability technology, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problem that other physical and chemical properties of rutile titanium dioxide are not tested, and the corrosion resistance and other properties of titanium dioxide cannot be known. The preparation method is cumbersome and other problems, to achieve the effect of high gloss, easy hiding power and tinting power, and improved durability

Active Publication Date: 2020-12-22
GUANGDONG HUI YUN TITANIUM IND CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of the rutile titanium dioxide prepared by this method is higher than 98%, but other physical and chemical properties of the rutile titanium dioxide have not been tested, so the corrosion resistance and other properties of the prepared titanium dioxide cannot be known
[0007] In order to develop rutile-type titanium dioxide with excellent performance, researchers have conducted a lot of research. The current rutile-type titanium dioxide still has problems such as cumbersome preparation methods, poor corrosion resistance, and poor adhesion. Therefore, it is urgent to provide a Rutile-type titanium dioxide with simple production method, low cost, good dispersibility and high durability

Method used

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  • A kind of preparation method of high durability anti-powdering rutile type ultrafine titanium dioxide

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Embodiment 1

[0038] A preparation method of high durability anti-powdering rutile type ultrafine titanium dioxide, comprising the following steps:

[0039] (1) Dry the titanium concentrate and grind it through a 325 mesh sieve to obtain dry titanium concentrate powder; quantitatively transfer the obtained powder into a mixing tank equipped with concentrated sulfuric acid and mix evenly to obtain a slurry, and then send the slurry into In a continuous acidolysis reactor, waste acid is added for acidolysis to obtain a solid phase; after the solid phase is dissolved, iron powder is added for reduction to obtain a reduced titanium solution A;

[0040](2) Add starch and modified polyacrylamide with a mass ratio of 1:1 to the reduced titanium solution A obtained in step (1) and add starch and modified polyacrylamide to the reduced titanium solution A obtained in step (1). Add antimony white and ferrous sulfide with a mass ratio of 1:1, let it stand until the precipitation is complete, and then f...

Embodiment 2

[0053] A preparation method of high durability anti-powdering rutile type ultrafine titanium dioxide, comprising the following steps:

[0054] (1) Dry the titanium concentrate and grind it through a 325-mesh sieve to obtain dry titanium concentrate powder; quantitatively transfer the obtained powder into a mixing tank equipped with concentrated sulfuric acid and mix it evenly to obtain a slurry, and then send the slurry into In a continuous acidolysis reactor, waste acid is added for acidolysis to obtain a solid phase; after the solid phase is dissolved, iron powder is added for reduction to obtain a reduced titanium solution A;

[0055] (2) Add starch and modified polyacrylamide with a mass ratio of 2:1 to the reduced titanium solution A obtained in step (1) and add starch and modified polyacrylamide to the reduced titanium solution obtained in step (1). Add antimony white and ferrous sulfide with a mass ratio of 1:1, let it stand until the precipitation is complete, and then...

Embodiment 3

[0068] A preparation method of high durability anti-powdering rutile type ultrafine titanium dioxide, comprising the following steps:

[0069] (1) Dry the titanium concentrate and grind it through a 325 mesh sieve to obtain dry titanium concentrate powder; quantitatively transfer the obtained powder into a mixing tank equipped with concentrated sulfuric acid and mix uniformly to obtain a slurry 1, and then mix the slurry 1 Send it into a continuous acidolysis reactor, and add waste acid for acidolysis to obtain a solid phase; dissolve the solid phase and add iron powder for reduction to obtain reduced titanium solution A;

[0070] (2) Add starch and modified polyacrylamide with a mass ratio of 2:1 to the reduced titanium solution A obtained in step (1) and add starch and modified polyacrylamide to the reduced titanium solution obtained in step (1). Add antimony white and ferrous sulfide with a mass ratio of 1:1, let it stand until the precipitation is complete, and then filter...

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Abstract

The invention discloses a preparation method of high-durability anti-pulverization rutile type ultrafine titanium dioxide, and belongs to the field of preparation of inorganic metal compounds. In thepreparation process, a flocculating agent and impurity removing agent mixed sedimentation method is adopted; impurities in the reduced titaniferous solution A are fully separated out and thus the prepared titanium dioxide has extremely high glossiness, extraordinary covering power and coloring power and is easy to disperse; in the calcining step, the rotating speed of the kiln body in the calcining process, the calcining temperature and the calcining time of the materials in the kiln body are controlled, the prepared rutile type titanium dioxide has better weather resistance and is not liableto pulverize, yellow and lose gloss after being placed for a long time, the obtained product is coated with zinc, zirconium and aluminum, the durability is improved, and the produced rutile type titanium dioxide has good pulverization resistance.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic metal compounds, and in particular relates to a preparation method of high-durability and anti-powdering rutile ultrafine titanium dioxide. Background technique [0002] Titanium dioxide, also known as titanium dioxide, is a non-toxic white inorganic pigment with optimal whiteness and brightness. It has stable chemical properties, excellent hiding power, strong coloring ability and high melting point. It is widely used In coatings, plastics, inks, ceramics, paper industry and cosmetics and other industries. Titanium dioxide generally includes three crystal forms of rutile type, brookite type and anatase type, because the anatase type will also transform into rutile type at high temperature, so both have high commercial production value, and rutile type (R type ) has the advantages of compact structure, large refractive index, resistance to ultraviolet radiation, low photochemical activity,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/04C09C3/06C01G23/08C01G23/053
CPCC01G23/0532C01G23/08C01P2006/21C01P2006/22C01P2006/60C09C1/363C09C1/3661C09C1/3692
Inventor 何明川黄建文赵平陈湘涛李缉勇
Owner GUANGDONG HUI YUN TITANIUM IND CORP LTD
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