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Preparation method of high dispersing rutile product

A rutile and high-dispersion technology, applied in chemical instruments and methods, dyeing polymer organic compound treatment, inorganic chemistry, etc., can solve the problems of reducing product weather resistance, reducing product brightness, polluting raw materials, etc., to improve product dispersion performance, The effect of reducing consumption and saving cost

Active Publication Date: 2012-03-28
SICHUAN LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have great limitations. For example, reducing the calcination strength of metatitanic acid will reduce the weather resistance of the product; prolonging the sanding time will pollute the raw materials and reduce the brightness of the product; the effect of coating on the dispersion of finished titanium dioxide is not obvious; increasing the strength of gas powder The method of improving the dispersion of finished products has high energy consumption and is not economically cost-effective.
There is no research on improving the dispersibility of finished rutile products by improving the pre-grinding effect of titanium dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take the calcined product of Example 1, wash it with water until the salt mass content is reduced to 0.50%, add a dispersant sodium silicate solution according to 0.20% of the total titanium dioxide mass, add water and beat until the titanium dioxide content is 1000 g / L, and carry out the obtained slurry In Example 1, the finished rutile product C was obtained after ball mill grinding, sand grinding, coating and waiting for treatment. The 20 degree gloss data of C is shown in Table 1.

Embodiment 2

[0025] Take the calcined product of Example 1, wash it with water until the salt mass content is reduced to 0.40%, add a dispersant sodium silicate solution according to 0.20% of the total titanium dioxide mass, add water and beat until the titanium dioxide content is 1000 g / L, and carry out the obtained slurry In Example 1, the finished rutile product D was obtained after ball mill grinding, sand grinding, coating and waiting for treatment. The 20 degree gloss data of D is shown in Table 1.

Embodiment 3

[0027] Take the calcined product of Example 1, wash it with water until the salt mass content is reduced to 0.30%, add a dispersant sodium silicate solution according to 0.20% of the total titanium dioxide mass, add water and beat until the titanium dioxide content is 1000 g / L, and carry out the obtained slurry In Example 1, the finished rutile product E was obtained after ball mill grinding, sand grinding, coating and waiting for treatment. Table 1 shows the gloss data of E at 20 degrees.

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Abstract

The invention discloses a preparation method of a high dispersing rutile product; the preparation method comprises the following steps of: adopting a sulfuric acid process which sequentially comprises steps of acidolysis reaction, hydrolyzing generation of metatitanic acid, salt treatment, calcining, wet grinding, then sanding, coating and aerating powder to obtain titanium white, washing rutile titanium dioxide crude product obtained by calcining so as to reduce the content of water-soluble sale thereinto, and then adding a dispersing agent to the washed rutile titanium dioxide for wet grinding; the alkyd resin series of a rutile product prepared by the method has the dispersiveness of 20 degrees and gloss of more than 120; if the rutile crude product is not washed, the alkyd resin series of the rutile product prepared by the same after-treatment method has the dispersiveness of 20 degrees and gloss of up to 120; and the usage quantity of the dispersing agent is greatly reduced in the wet grinding process, thereby saving the cost and greatly increasing the dispersion performance of the product.

Description

technical field [0001] The invention relates to a preparation method of rutile titanium dioxide, in particular to a preparation method of rutile with specific high dispersion performance. Background technique [0002] Titanium dioxide is one of the most important inorganic pigments and chemical raw materials. Pigment grade titanium dioxide is mainly used in coatings, papermaking, plastics, rubber, latex paint, printing ink, chemical fiber and other industries. Non-pigment grade titanium dioxide is mainly used in enamel, capacitors, welding electrodes, etc. [0003] The production methods of titanium dioxide are generally divided into sulfuric acid method and chloride method. Among them, the sulfuric acid method is a common traditional production method, and its steps generally include: ferrotitanium powder and concentrated sulfuric acid undergo acidolysis reaction to produce titanium oxysulfate, settle, crystallize, and hydrolyze to generate metatitanic acid, and the metati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/10C09C3/04C09C3/06
CPCC01G23/0532C09C1/3653C09C1/36C09C1/3669C01G23/047
Inventor 代堂军蔡平雄常键邓伯松朱全芳
Owner SICHUAN LOMON TITANIUM IND CO LTD
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