Graphite expansion ramming material as well as preparation method and use method thereof

A technology of ramming material and graphite, applied in the direction of furnace, blast furnace details, furnace type, etc., can solve the problems of dislocation of refractory materials, loss of cooling contacts, reduction of cooling efficiency, etc.

Pending Publication Date: 2021-06-04
河南远洋新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of blast furnaces and submerged arc furnaces, cooling contacts may be lost due to dislocation of refractory materials or gaps due to misplacement
For example, between the cooling water pipe and the furnace wall, this situation often occurs, resulting in a reduction in cooling efficiency

Method used

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  • Graphite expansion ramming material as well as preparation method and use method thereof
  • Graphite expansion ramming material as well as preparation method and use method thereof

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preparation example Construction

[0030] The embodiment of the present invention also provides a kind of preparation method of above-mentioned graphitic expanded ramming material, it comprises:

[0031] S1. mixing the first flake graphite, the second flake graphite, and the third flake graphite in proportion to obtain flake graphite;

[0032] S2. uniformly mixing flake graphite and silicon carbide powder to obtain a mixed powder;

[0033] S3. Knead the mixed powder with medium temperature modified asphalt and anthracene oil.

[0034] Preferably, the kneading temperature is 80-100° C., and the kneading time is 1-2 h. After kneading, let it cool to room temperature and pack it into a bag.

[0035] Further, the mass ratio of mixed powder, medium temperature modified asphalt and anthracene oil is 75:15:10. Under the above ratio, the obtained graphite expanded ramming material has better plasticity at room temperature, and at the same time, when the temperature rises to 200°C, it can expand rapidly and has high ...

Embodiment 1

[0042] The present embodiment provides a graphite expansion ramming material, which comprises in parts by weight:

[0043] 65 parts of flake graphite, 10 parts of silicon carbide powder, 12 parts of medium temperature modified pitch, 8 parts of anthracene oil;

[0044] Wherein, the flake graphite includes the first flake graphite, the second flake graphite, and the third flake graphite; the particle diameter of the first flake graphite is 2-4 mm, and the particle diameter of the second flake graphite is 0.08-2 mm; the third flake graphite The particle size of the graphite is <0.08 mm; the mass ratio of the first flake graphite, the second flake graphite, and the third flake graphite is 1:2.2:1.8; the particle size of the silicon carbide powder is 0.05-2 mm.

[0045] The preparation method of this graphite expanded ramming material is as follows:

[0046] S1. mixing the first flake graphite, the second flake graphite, and the third flake graphite in proportion to obtain flake ...

Embodiment 2

[0050] The present embodiment provides a graphite expansion ramming material, which comprises in parts by weight:

[0051]70 parts of flake graphite, 5 parts of silicon carbide powder, 18 parts of medium temperature modified pitch, 8 parts of anthracene oil;

[0052] Wherein, the flake graphite includes the first flake graphite, the second flake graphite, and the third flake graphite; the particle diameter of the first flake graphite is 2-4 mm, and the particle diameter of the second flake graphite is 0.08-2 mm; the third flake graphite The particle size of the graphite is <0.08 mm; the mass ratio of the first flake graphite, the second flake graphite, and the third flake graphite is 1:2.6:1.3; the particle size of the silicon carbide powder is 0.05-2 mm.

[0053] The preparation method of this graphite expanded ramming material is as follows:

[0054] S1. mixing the first flake graphite, the second flake graphite, and the third flake graphite in proportion to obtain flake gr...

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Abstract

The invention discloses a graphite expansion ramming material as well as a preparation method thereof, and relates to the technical field of blast furnace and submerged arc furnace repairing. The graphite expansion ramming material is prepared by mixing crystalline flake graphite, silicon carbide powder, medium-temperature modified pitch and anthracene oil according to a specific proportion, the crystalline flake graphite with three particle size ranges is mixed and used according to reasonable gradation, the raw materials are easy to obtain, and the matching is reasonable. The obtained graphite expansion ramming material has good heat-conducting property and ductility, and can be used for quickly and efficiently filling heat transfer gaps and recovering heat conduction. In addition, the embodiment of the invention also provides a use method of the graphite expansion ramming material; the operation is simple and convenient, the heat transfer gaps can be quickly filled, and normal heat conduction is recovered.

Description

technical field [0001] The invention relates to the technical field of repairing blast furnaces and submerged arc furnaces, in particular to a graphite expanded ramming material and a preparation method and use method thereof. Background technique [0002] The iron and steel industry is one of the basic industries of a country. Economists usually regard steel output or per capita steel output as an important indicator to measure the economic strength of a country. my country is a big country of iron and steel. With the rapid development of the iron and steel industry, the iron and steel production equipment and enterprise scale have been developing in the direction of large-scale. Among them, blast furnace and submerged arc furnace are important equipment in steel production, and the quality of blast furnace and submerged arc furnace directly affects the quality of tapped iron. [0003] During the use of blast furnaces and submerged arc furnaces, cooling contacts may be los...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/52C21B7/04C21B11/10
CPCC04B35/66C04B35/522C21B7/04C21B11/10C04B2235/3826
Inventor 白吉康孟轲王全喜白林果张利军任益凡白吉华
Owner 河南远洋新材料技术有限公司
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