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A kind of production technology of heat-resistant iron oxide black

A technology of iron oxide black and production process, which is applied in the field of chemical pigments, can solve problems such as fading, discoloration, and limiting the use range of iron oxide black, and achieve the effect of improving temperature resistance and dispersibility

Active Publication Date: 2021-08-27
YIXING YUXING IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, iron oxide black will be dehydrated and oxidized to iron red when the temperature reaches about 100°C. If iron oxide black is used in some high temperature occasions, fading and discoloration will occur, which limits the use of iron oxide black. scope

Method used

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  • A kind of production technology of heat-resistant iron oxide black
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Examples

Experimental program
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Effect test

Embodiment 1

[0043] see Figure 1-2 , a production process of heat-resistant iron oxide black, a production process of heat-resistant iron oxide black, comprising the following steps:

[0044] S1, after filtering the solution prepared by the sodium hydroxide oxidation method to the raw material, enter the filter press to filter, and the solid is iron oxide black filter cake;

[0045] S2. Dehydrating and drying the iron oxide black filter cake above at 80° C., and pulverizing the dried iron oxide black pigment to obtain a primary powder of 50 mesh to 80 mesh;

[0046] S3, take the white carbon black of 5% of the weight of the primary powder and mix it with the powdered refractory material, and disperse at a high speed of 1500rpm for 15min;

[0047] S4. Take excess absolute ethanol and heat it to 80°C to obtain ethanol vapor, and mix it with surfactant and coupling agent sequentially in the entraining device;

[0048] S5. Drain the mixed steam to the mixed powder for covering impact, and l...

Embodiment 2

[0060] see Figure 1-2 , a production process of heat-resistant iron oxide black, a production process of heat-resistant iron oxide black, comprising the following steps:

[0061] S1, after filtering the solution prepared by the sodium hydroxide oxidation method to the raw material, enter the filter press to filter, and the solid is iron oxide black filter cake;

[0062] S2. Dehydrating and drying the iron oxide black filter cake above at 100° C., and pulverizing the dried iron oxide black pigment to obtain a primary powder of 50 mesh to 80 mesh;

[0063] S3, take the white carbon black of 6% of the powder weight of the first product and mix with the powdery refractory material, and disperse at a high speed of 1800rpm for 20min;

[0064] S4. Take excess absolute ethanol and heat it to 80°C to obtain ethanol vapor, and mix it with surfactant and coupling agent sequentially in the entraining device;

[0065] S5. Drain the mixed steam to the mixed powder for covering and impact...

Embodiment 3

[0074] see Figure 1-2 , a production process of heat-resistant iron oxide black, a production process of heat-resistant iron oxide black, comprising the following steps:

[0075] S1, after filtering the solution prepared by the sodium hydroxide oxidation method to the raw material, enter the filter press to filter, and the solid is iron oxide black filter cake;

[0076] S2. Dehydrating and drying the iron oxide black filter cake above at 150° C., and pulverizing the dried iron oxide black pigment to obtain a primary powder of 50 mesh to 80 mesh;

[0077] S3, take the white carbon black of 8% by weight of the primary powder and mix it with the powdered refractory material, and disperse at a high speed of 2000rpm for 20min;

[0078] S4. Take excess absolute ethanol and heat it to 80°C to obtain ethanol vapor, and mix it with surfactant and coupling agent sequentially in the entraining device;

[0079] S5. Drain the mixed steam to the mixed powder for covering and impacting, a...

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Abstract

The invention discloses a production process of heat-resistant iron oxide black, which belongs to the field of chemical pigments. It is a production process of heat-resistant iron oxide black. The invention can realize dehydration and drying after the iron oxide black filter cake is obtained by adopting the sodium hydroxide oxidation method dry, and preliminarily powdered and mixed with white carbon black and powdered refractory materials, and then after high-speed uniform dispersion, innovatively introduce an entrainment device, using anhydrous ethanol vapor to entrain surfactants and coupling agents , based on the fluidity and contact properties of the gas, the powdery refractory material is uniformly and comprehensively covered on the surface of the iron oxide black, and the coating dead angle is not easy to appear, forming a dense high temperature resistant film, which significantly improves the resistance of the iron oxide black High temperature performance, acid resistance, alkali resistance, light absorption, tinting strength, compatibility and dispersibility have all been greatly improved.

Description

technical field [0001] The invention relates to the field of chemical pigments, in particular to a production process of heat-resistant iron oxide black. Background technique [0002] Iron-based pigments are important inorganic color pigments, and their annual output ranks first in inorganic color pigments. Due to the strengthening of the world's environmental protection awareness, inorganic iron-based pigments have continuously replaced organic pigments and lead-based and chromium-based toxic inorganic pigments such as red lead and lead chrome yellow due to their non-toxic, odorless, and non-polluting characteristics. Iron oxide black is widely used in paints and coatings in the construction industry due to its simple chemical composition, non-toxic and pollution-free, and strong chemical stability. [0003] However, iron oxide black will be dehydrated and oxidized to iron red when the temperature reaches about 100°C. If iron oxide black is used in some high temperature oc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/24C09C3/04C09C3/06C09C3/12C09C3/08C01G49/08
CPCC01G49/08C09C1/24C09C3/003C09C3/04C09C3/041C09C3/043C09C3/06C09C3/063C09C3/08C09C3/12
Inventor 单淼陆云飞宋润亮
Owner YIXING YUXING IND & TRADE
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