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Titanium dioxide granular pigment and preparation method thereof

A manufacturing method and technology of titanium dioxide, applied in the field of chemical pigments, can solve the problems of unresolved, flying, etc., and achieve the effects of accurate feeding, fast settling speed, and outstanding substantive characteristics

Inactive Publication Date: 2010-04-14
HANGZHOU XIAOXIANG PIGMENT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the invention patent No. ZL03103924.3 only solves the traditional problem of iron oxide red powder pigment, it does not solve the technical problem of using iron oxide series other coloring materials or titanium dioxide coloring materials as the main body of the pigment, such as when titanium dioxide is used as the coloring material When it is the main body, how to solve the problems of flying dust and difficulty in automatic measurement, and at the same time ensure the performance of the product well

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The manufacture method of the titanium dioxide granular pigment described in this embodiment comprises the following steps to realize:

[0028] a) Weigh 0.03Kg of sodium carboxymethyl cellulose and 0.01Kg of ferrous sulfate, mix them as additives, add them to 40Kg of water, heat to 30°C, and wait until the additives are completely dissolved, and the obtained additive aqueous solution is set aside;

[0029] b) Through an automatic metering conveyor, 100Kg of titanium dioxide powder is sent into a disc granulator with a diameter of 1500mm, and the spray tank containing the additive aqueous solution obtained in step a) is sprayed on the powder to control the additive The amount of aqueous solution used is 15Kg, the pressure used for spraying is 0.1Mpa, and small particles of titanium dioxide coated with additives are gradually formed;

[0030] c) screening the particles obtained in step b) with a 20-mesh vibrating sieve, and drying the obtained particle size material;

[...

Embodiment 2

[0034] The manufacture method of the titanium dioxide granular pigment described in this embodiment comprises the following steps to realize:

[0035] a) After heating 40Kg of water to 50°C, add 4Kg of sodium silicate and 2Kg of gelatin, and stir until completely dissolved to obtain an aqueous additive solution;

[0036] b) Through an automatic metering conveyor, 100Kg of titanium dioxide powder is sent into a disc granulator with a diameter of 3000mm, and the spray tank containing the additive aqueous solution obtained in step a) is sprayed on the powder to control the additive The amount of aqueous solution used is 30Kg, the spray pressure is 0.2Mpa, and small particles of titanium dioxide coated with additives are gradually formed;

[0037] c) screening the particles obtained in step b) with a 50-mesh vibrating sieve, and drying the obtained particle size material;

[0038] d) Classify and separate the dried particle size materials to obtain the finished product.

Embodiment 3

[0040] Get 4Kg sodium silicate as single additive, other steps and conditions are identical with embodiment 2, manufacture and obtain titanium dioxide granular pigment.

[0041]Because sodium silicate and two kinds of components of gelatin or sodium silicate single component are selected for use as additive in embodiment 2 and embodiment 3, especially sodium silicate (Na2SiO3) additive, be transparent colorless or talk about yellow to slightly Red viscous liquid, easily soluble in water, can effectively increase the alkalinity, hardness and strength of the product, so that the manufactured product has better fluidity.

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Abstract

The invention belongs to the field of chemical pigments and particularly relates to a titanium dioxide granular pigment and a preparation method thereof. The related titanium dioxide granular pigment comprises titanium dioxide which is a main component; an additive coating layer is arranged outside the titanium dioxide; and the titanium dioxide and the coating layer are combined together to form the granular pigment. The pigment is prepared by the following steps: preparing an additive aqueous solution and heating to 30-100 DEG C; delivering the titanium dioxide to a granulating machine, uniformly spraying the prepared additive aqueous solution on the titanium dioxide and gradually forming small granules; screening the prepared granules by a vibrating screen and drying to obtain a finished product. The granular pigment prepared by the invention is difficult to disperse, thereby effectively inhibiting dust pollution; and the titanium dioxide granular pigment has high color preserving performance, good fluidity and dispersibility and low cost and is suitable for being widely applied in industries.

Description

technical field [0001] The invention belongs to the field of chemical pigments, and relates to a pigment and a manufacturing method thereof, more specifically, a titanium dioxide granular pigment and a manufacturing method thereof. Background technique [0002] Iron oxide series pigments and titanium dioxide pigments are important coloring raw materials widely used in paint, cement, asphalt and other industries. These traditional raw materials are fine powder products, which are easy to fly during use, seriously affecting the environment and the health of workers, and in modern production operations, due to its poor fluidity, it is difficult to accurately measure and automatically feed materials. It is difficult to popularize and apply on the production line. Therefore, there is an urgent need to develop an environmentally friendly pigment that can solve dust pollution. Aiming at these technical problems, the applicant filed an application and obtained an invention patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/10C09C3/06C09C3/08
Inventor 曹位明
Owner HANGZHOU XIAOXIANG PIGMENT CHEM
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