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Iron oxide black granular pigment and preparation method thereof

An iron oxide black, granular technology, 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 improved flow performance.

Inactive Publication Date: 2010-04-07
HANGZHOU XIAOXIANG PIGMENT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the ZL03103924.3 invention patent 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 iron oxide black is used as a coloring material. When the raw material is the main body, how to solve the problem 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

[0026] The manufacture method of the iron oxide black granular pigment described in the present embodiment, comprises the following steps to realize:

[0027] 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;

[0028] b) by an automatic metering conveyor, 100Kg iron oxide black powder is sent into a disc granulator with a diameter of 1500mm, and sprayed onto the powder with a spray tank of the additive aqueous solution obtained in step a), and controlled The amount of the additive aqueous solution is 15Kg, and the pressure used for spraying is 0.1Mpa, gradually forming small black iron oxide particles coated with the additive;

[0029] c) screening the particles obtained in step b) with a 20-mesh vibrating sieve, and drying the obtained particle size material;

[0030] d) ...

Embodiment 2

[0033] The manufacture method of the iron oxide black granular pigment described in the present embodiment, comprises the following steps to realize:

[0034] 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;

[0035] b) by an automatic metering conveyor, 100Kg iron oxide black powder is sent into a disc granulator with a diameter of 3000mm, sprayed on the powder with a spray tank of the additive aqueous solution obtained in step a), and controlled The dosage of the additive aqueous solution is 30Kg, and the spray pressure is 0.2Mpa, gradually forming small black particles of iron oxide coated with the additive;

[0036] c) screening the particles obtained in step b) with a 50-mesh vibrating sieve, and drying the obtained particle size material;

[0037] d) Classify and separate the dried particle size materials to obtain the finished product.

Embodiment 3

[0039] Take 4Kg of sodium silicate as a single additive, and other steps and conditions are the same as in Example 2, to produce black iron oxide granular pigment.

[0040]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 in particular relates to an iron oxide black granular pigment and a manufacturing method thereof. The iron oxide black granular pigment comprises a main component iron oxide black (Fe3O4) which is coated with an additive coating layer, and the main component iron oxide black is combined with the additive coating layer to form the granular pigment; and the pigment is prepared by the following steps: firstly preparing aqueous solution of an additive, and performing heating until 30 to 100 DEG C; and sending the iron oxide black into a granulator, evenly spraying the prepared aqueous solution of the additive onto powder, gradually forming small granules, and screening and drying the prepared granules with a vibrating screen to prepare a finished product. The granular pigment prepared by the method is not easy to diffuse so as to effectively prevent dust pollution, has high luster retention, good flowability and dispersity, and low cost, and is suitable to be widely applied in industry.

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, to a black iron oxide granular pigment and a manufacturing method thereof. Background technique [0002] Iron oxide series 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 (Patent No. ZL03103924.3) n...

Claims

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Application Information

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IPC IPC(8): C09C1/24C09C3/10C09C3/06C09C3/08
Inventor 曹位明
Owner HANGZHOU XIAOXIANG PIGMENT CHEM
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