A kind of anti-adhesive powder coating and preparation method thereof

A powder coating and anti-adhesion technology, applied in the field of metallurgy, can solve the problems of increasing labor and equipment costs

Active Publication Date: 2020-02-18
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of efficient slag cleaning operation process greatly increases labor and equipment costs, and it is not the best way

Method used

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Examples

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Effect test

preparation example Construction

[0022] The present invention also provides a preparation method of the anti-adhesive powder coating, which comprises: uniformly mixing corundum slag powder, limestone powder and coke powder.

[0023] The mixing of corundum slag powder, limestone powder and coke powder can be realized by a common mixer on the market. Preferably, when the corundum slag powder, limestone powder and coke powder are mixed, additives can be added and mixed together, wherein the additive is sodium tripolyphosphate or sodium hexametaphosphate. Additives can increase the adhesion performance of the paint in the spraying process and make the formed paint layer more stable.

[0024] Further, corundum slag powder, limestone powder and coke powder are prepared from corundum slag, limestone and coke respectively. The specific preparation steps include: drying corundum slag and limestone respectively, crushing, grinding and passing through 200-300 mesh sieves to obtain corundum slag powder and limestone pow...

Embodiment 1

[0029] This embodiment provides an anti-adhesive powder coating, which includes, by weight, 100 parts of corundum slag powder, 30 parts of limestone powder, 5 parts of coke powder and 5 parts of sodium tripolyphosphate. Its preparation method is as follows:

[0030] S1. Dry the corundum slag at 150° C. for 48 hours. After the drying is completed, crush, grind, and pass through a 200-mesh sieve to obtain corundum slag powder.

[0031] S2. Dry the limestone at 120° C. for 36 hours. After drying, crush and grind the limestone and pass through a 200-mesh sieve to obtain limestone powder.

[0032] S3. After crushing and grinding the coke, passing through a 200-mesh sieve to obtain coke powder.

[0033] S4. In a blender, mix the corundum slag powder, limestone powder, coke powder and sodium tripolyphosphate evenly to obtain the required anti-sticking powder coating.

[0034] Use a spraying machine to control the amount of water added to 8%, and spray the anti-adhesive powder coati...

Embodiment 2

[0036] This embodiment provides an anti-adhesive powder coating, which comprises, by weight, 100 parts of corundum slag powder, 5 parts of limestone powder, 20 parts of coke powder and 2 parts of sodium hexametaphosphate. Its preparation method is as follows:

[0037]S1. Dry the corundum slag at 200° C. for 24 hours. After the drying is completed, crush, grind, and pass through a 300-mesh sieve to obtain corundum slag powder.

[0038] S2. Dry the limestone at 150° C. for 18 hours. After drying, crush and grind the limestone and pass through a 300-mesh sieve to obtain limestone powder.

[0039] S3. After crushing and grinding the coke, passing through a 300-mesh sieve to obtain coke powder.

[0040] S4. In a blender, mix the corundum slag powder, limestone powder, coke powder and sodium hexametaphosphate evenly to obtain the required anti-sticking powder coating.

[0041] Use a spraying machine to control the amount of water added to 10%, and spray the anti-adhesive powder co...

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Abstract

An anti-sticking powder coating and a preparation method thereof relate to the field of metallurgy. According to the anti-sticking powder coating, powder of metallurgy slag, i.e., corundum slag is taken as a main material; due to characteristics of high fire resistance and high sintering temperature of the corundum slag, when the corundum slag is used as the main component of the coating, a coating layer cannot be easily sintered; limestone powder decomposes at high temperature to generate gas, so that the coating layer is enabled to form a porous structure loosened in texture, and the coating layer and a refractory substrate can be conveniently separated; and coke powder is capable of lowering affinity between the coating layer and molten iron or iron slag, which is not conductive to slag sticking, and meanwhile, the sintering action of the coating layer is relieved. The anti-sticking powder coating obtained after the corundum slag, the limestone powder and the coke powder are mixed according to a specific ratio has the advantages that stickiness is high, the texture is loosened, the coating layer is easy to differentiate, the slag removal operation is convenient and the like. The preparation method for the anti-sticking powder coating is simple and practical in operation, does not need complicated equipment, and is very suitable for large-scale industrial production. The anti-sticking powder coating prepared through the method is uniform in particle size and high in stickiness.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an anti-adhesive powder coating and a preparation method thereof. Background technique [0002] Vanadium-titanium molten iron is generally used in ladles during transportation. However, due to the special properties of vanadium-titanium molten iron and slag, the inner lining of the molten iron tank is seriously sticky with slag. In the middle and late stages of use, the effective tank capacity decreases sharply, which affects the filling and transportation of molten iron, and even affects the production organization on site. [0003] In response to the above problems, the methods commonly used by iron and steel enterprises are: increasing the insulation measures of the molten iron tank, such as using lightweight insulation materials, adding insulation covers, etc.; adopting efficient slag removal operations, such as oxygen lance cutting techniques, etc.; using anti-sticking Paint spray...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B30/00B22D41/02
CPCB22D41/02C04B30/00C04B2111/00525C04B14/022C04B14/303C04B14/28C04B38/0022
Inventor 郝建璋黎建明文永才曾冠武
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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