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Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating

A technology for strengthening cement and firing zone is applied in the field of refractory materials for firing zone of cement rotary kiln, which can solve the problems of easy falling off and difficulty in hanging kiln skin, so as to promote the development process, improve the performance of hanging kiln skin, and enhance the hanging kiln skin. The effect of skin properties

Active Publication Date: 2015-03-25
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesia-iron-aluminum spinel bricks have problems such as difficulty in hanging the kiln skin and easy falling off in the early stage of use.

Method used

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  • Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating
  • Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating
  • Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A coating for enhancing the performance of cement rotary kiln firing belt hanging kiln skin, its chemical composition and weight percentage composition are as follows:

[0022]

[0023] The coating that enhances the performance of cement rotary kiln firing with kiln skin is a slurry with uniform material distribution. After the slurry is fully mixed in the mixer with the above powder material, add 20% of the total weight of the powder material at room temperature. Drinking water is blended and stirred.

[0024] An application of a coating that enhances the performance of cement rotary kiln firing with kiln skin hanging, the steps of the application method are as follows:

[0025] a. Clean up the floating dust and impurities on the surface of the cement rotary kiln magnesia-iron-aluminum spinel brick;

[0026] b. Take the coating that enhances the performance of cement rotary kiln firing belt hanging kiln skin and spray it evenly on the surface of magnesium iron alum...

Embodiment 2

[0029] A coating for enhancing the performance of cement rotary kiln firing belt hanging kiln skin, its chemical composition and weight percentage composition are as follows:

[0030]

[0031] The coating that enhances the performance of cement rotary kiln firing with hanging kiln skin is a slurry with uniform material distribution. After the slurry is fully mixed in the mixer with the above powder material, add 25% of the total weight of the powder material at room temperature. Drinking water is blended and stirred.

[0032] An application of a coating that enhances the performance of cement rotary kiln firing with kiln skin hanging, the steps of the application method are as follows:

[0033] a. Clean up the floating dust and impurities on the surface of the cement rotary kiln fired with magnesium-iron-aluminum spinel brick;

[0034] b. Take the coating that enhances the performance of cement rotary kiln firing belt hanging kiln skin and spray it evenly on the surface of...

Embodiment 3

[0037] A coating for enhancing the performance of cement rotary kiln firing belt hanging kiln skin, its chemical composition and weight percentage composition are as follows:

[0038]

[0039] The coating that enhances the performance of cement rotary kiln firing with kiln skin is a slurry with uniform material distribution. After the slurry is fully mixed in the mixer with the above-mentioned powder material, add 30% of the total weight of the powder material at room temperature. Drinking water is blended and stirred.

[0040] An application of a coating that enhances the performance of cement rotary kiln firing with kiln skin hanging, the steps of the application method are as follows:

[0041] a. Clean the surface of the magnesia-iron-aluminum spinel brick after leaving the kiln and cooling in the production factory;

[0042] b. Take the coating that enhances the performance of cement rotary kiln firing belt hanging kiln skin and spray evenly on the surface of magnesia-...

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Abstract

The invention discloses a coating capable of enhancing the kiln coating adherence of a firing zone of a rotary cement kiln and application of the coating. The kiln coating adherence of a magnesia-hercynite brick can be effectively improved. The coating comprises the following chemical components in percentage by weight: 50%-70% of commercial alumina powder, 20%-45% of iron oxide powder, 1-3% of portland cement chamotte powder, 1%-3% of sodium hexametaphosphate and 1%-3% of sodium carboxymethylcellulose. The coating comprises the following application steps: cleaning the surface of the magnesia-hercynite brick; uniformly spraying the coating on the surface of the magnesia-hercynite brick to form a paintcoat with the thickness of 1.5-2mm; and after spraying, standing for 5-8 hours, so that the paintcoat is naturally dried. With the magnesia-hercynite brick as a kiln coating material, the kiln coating adherence is enhanced by adopting the coating; the raw materials used by the coating are low in price; the kiln coating adherence is significantly improved; and the chrome-free development process of the rotary cement kiln is effectively promoted.

Description

technical field [0001] The invention relates to a refractory material for a cement rotary kiln firing belt and its application, in particular to a coating for enhancing the performance of the cement rotary kiln firing belt hanging on the kiln skin and its application. Background technique [0002] The refractory materials used in the firing zone of cement rotary kiln are magnesia-chrome bricks, and during the use of magnesia-chrome bricks and the storage of discarded bricks, the hexavalent chromium produced will cause serious harm to the environment. The development of chromium-free refractory materials for the firing zone of cement rotary kiln has become the focus of research in the field of refractory materials. The chromium-free products currently developed mainly include: magnesia spinel brick, dolomite brick, magnesia-zirconium brick and magnesia-iron-aluminum spinel brick. Through long-term research and use of the above-mentioned products, it is found that magnesia-ir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 李志坚丁达飞刘兰芳王林
Owner UNIV OF SCI & TECH LIAONING
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