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Non-fabric heat-proof coating material for continuous casting nozzle

A technology of thermal insulation coating and continuous casting nozzle, which is applied in the field of refractory materials, can solve the problems of environmental pollution by refractory fiber paper or refractory fiber felt, low production efficiency of pasting, and chemical reaction of refractory fiber anti-oxidation coating. The effect of high efficiency, good firmness and good thermal insulation performance

Inactive Publication Date: 2009-02-04
山东耐材集团中齐耐火有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the pollution of the environment by wrapping a layer of refractory fiber paper or refractory fiber felt on the outer surface of the existing aluminum carbon nozzle, the refractory fiber is easy to chemically react with the anti-oxidation coating on the surface of the nozzle and fall off, and the paste production efficiency Low disadvantages, providing a non-fibrous thermal insulation coating material for continuous casting nozzles that can be coated on the surface of aluminum carbon nozzles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The composition of the raw material of the thermal insulation coating material is (kg):

[0044] Perlite (particle diameter 0.2-0.5mm) 5

[0045] Vermiculite (particle diameter less than 1mm) 6

[0046] Quartz (particle diameter 0.2-0.1mm) 10

[0047] Burnt gems (particle diameter less than 0.074mm) 20

[0048] Burning aid flux (particle diameter less than 0.044mm) 4

[0049] Adhesive (particle diameter less than 0.044mm) 1

[0050] Silica sol liquid 50.

[0051] The above-mentioned burning aid flux is any one of the three materials of boron glass, pyrophyllite, and feldspar, or a mixture of the three materials in any weight ratio; the adhesive is kaolin, clay, and bentonite. Any one, or a mixture of three materials in any weight ratio, that is, it can be a mixture of three materials in any weight ratio, or any two materials in any weight ratio Number mix.

[0052] Silica sol liquid is an existing finished product.

[0053] Put the above materials into the sand ...

Embodiment 2

[0055] The composition of the raw material of the thermal insulation coating material is (kg):

[0056] Perlite (particle diameter 0.2-0.5mm) 20

[0057] Vermiculite (particle diameter less than 1mm) 20

[0058] Quartz (particle diameter 0.2-0.1mm) 30

[0059] Burnt gems (particle diameter less than 0.074mm) 50

[0060] Burning aid flux (particle diameter less than 0.044mm) 20

[0061] Adhesive (particle diameter less than 0.044mm) 5

[0062] Silica sol liquid 70.

[0063] The above-mentioned burning aid flux is any one of the three materials of boron glass, pyrophyllite, and feldspar, or a mixture of the three materials in any weight ratio; the adhesive is kaolin, clay, and bentonite. Any one of them, or a mixture of the three materials in any weight ratio, that is, it can be a mixture of the three materials in any weight ratio, or any two of them in any weight ratio Mix in proportions.

[0064] Silica sol liquid is an existing finished product.

[0065] Put the above m...

Embodiment 3

[0067] The composition of the raw material of the thermal insulation coating material is (kg):

[0068] Perlite (particle diameter 0.2-0.5mm) 15

[0069] Vermiculite (particle diameter less than 1mm) 10

[0070] Quartz (particle diameter 0.2-0.1mm) 20

[0071] Burnt gemstone (particle diameter less than 0.074mm) 40

[0072] Burning aid flux (particle diameter less than 0.044mm) 15

[0073] Adhesive (particle diameter less than 0.044mm) 2

[0074] Silica sol liquid 60.

[0075] The above-mentioned burning aid flux is any one of the three materials of boron glass, pyrophyllite, and feldspar, or a mixture of the three materials in any weight ratio; the adhesive is the three materials of kaolin, clay, and bentonite Any one of them, or a mixture of the three materials in any weight ratio, that is, it can be a mixture of the three materials in any weight ratio, or any two of them in any weight ratio Mix in proportions.

[0076] Silica sol liquid is an existing finished produc...

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Abstract

The invention relates to an isolation coating material to be environmental protective and preventing chemical drop-off, improving productivity. It mixes the pearl rock, quartz, flux, adhesive agent, silica gel to form into a coating material. This isolation coating material is better in liner contraction, density, porosity and conductivity than the fire proof fiber, with good temperature maintenance effect, stable in conductivity, less in environmental protection, being able to keep the loss of temperature, preventing oxidization, hard to peel off, high in production efficiency.

Description

technical field [0001] The invention belongs to refractory materials, in particular to a paint coated on the outer surface of a continuous casting nozzle for protection and heat insulation. Background technique [0002] The nozzles used in continuous steel casting are generally aluminum carbon nozzles. It is one of the three major parts that play a key role in the continuous casting process. It plays an important role in protecting molten steel from pollution, oxidation and splashing. . In order to prevent the outer surface of the nozzle from being heated and peeled off during baking or use, reduce heat loss during use, reduce thermal stress, improve the thermal shock resistance of the nozzle, reduce the incidence of accidents, and improve the quality of continuous casting slabs, generally aluminum The outer surface of the carbon nozzle is wrapped with a layer of protective and heat-insulating material. In the prior art, a layer of refractory fiber paper or refractory fibe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00B22D41/54
Inventor 董文全张娜鄢凤明周永涛
Owner 山东耐材集团中齐耐火有限公司