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Silicon carbide hot melt solid repairing paste and preparation method thereof, and blast furnace and submerged arc furnace taphole repair method

A silicon carbide heat and tap hole technology, applied in lighting and heating equipment, furnace, lining repair and other directions, can solve the problems of construction tap hole shape limitation, complicated construction, slag hanging on tap hole, etc. Hanging slag and hanging iron, with reasonable effect

Pending Publication Date: 2021-06-18
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

In the past taphole repairs, the repair materials used were not only complicated in the repair process, but also limited by the shape of the construction taphole
Moreover, the service life of these repair products is relatively short, and it is easy to make the iron hole hang slag

Method used

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  • Silicon carbide hot melt solid repairing paste and preparation method thereof, and blast furnace and submerged arc furnace taphole repair method

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preparation example Construction

[0030] The embodiment of the present invention also provides a method for preparing the above-mentioned silicon carbide hot-melt repair paste, which includes:

[0031] S1. Mix the first silicon carbide powder, the second silicon carbide powder, and the third silicon carbide powder in proportion to obtain silicon carbide powder;

[0032] S2. uniformly mixing silicon carbide powder, graphite powder and metal silicon 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 mixing well, let it cool and pack it into bags.

[0035] The embodiment of the present invention also provides a method for repairing the taphole of a blast furnace and a submerged arc furnace, which includes:

[0036] S1. Place a steel pipe with the same diameter as the taphole in the taphole of the blast furnace and submerged arc furnace...

Embodiment 1

[0044] This embodiment provides a silicon carbide hot-melt repair paste, which includes:

[0045] 60 parts of silicon carbide powder, 10 parts of graphite powder, 2 parts of metal silicon powder, 20 parts of medium temperature modified asphalt, 5 parts of anthracene oil;

[0046] Wherein, the silicon carbide powder includes the first silicon carbide powder, the second silicon carbide powder, and the third silicon carbide powder; the particle diameter of the first silicon carbide powder is 1~3 mm, and the particle diameter of the second silicon carbide powder is 0.08~ 1 mm; the particle size of the third silicon carbide powder is <0.08 mm; the mass ratio of the first silicon carbide powder, the second silicon carbide powder, and the third silicon carbide powder is 1:2.2:1.8. The particle size of graphite powder is 0.05~1mm. The particle size of metal silicon powder is 0.05~1 mm.

[0047] The preparation method of the silicon carbide hot-melt repair paste is as follows:

[00...

Embodiment 2

[0052] This embodiment provides a silicon carbide hot-melt repair paste, which includes:

[0053] 65 parts of silicon carbide powder, 5 parts of graphite powder, 5 parts of metal silicon powder, 15 parts of medium temperature modified asphalt, 10 parts of anthracene oil;

[0054] Wherein, the silicon carbide powder includes the first silicon carbide powder, the second silicon carbide powder, and the third silicon carbide powder; the particle diameter of the first silicon carbide powder is 1~3 mm, and the particle diameter of the second silicon carbide powder is 0.08~ 1 mm; the particle size of the third silicon carbide powder is <0.08 mm; the mass ratio of the first silicon carbide powder, the second silicon carbide powder, and the third silicon carbide powder is 1:2.6:1.3. The particle size of graphite powder is 0.05~1mm. The particle size of metal silicon powder is 0.05~1 mm.

[0055] The preparation method of the silicon carbide hot-melt repair paste is as follows:

[00...

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Abstract

The invention relates to a silicon carbide hot melt solid repairing paste and a preparation method thereof, and relates to the technical field of blast furnace and submerged arc furnace taphole repairing. The silicon carbide hot melt solid repairing paste is prepared by mixing silicon carbide powder, graphite powder, metal silicon powder, medium temperature modified pitch and anthracene oil according to a specific proportion; the silicon carbide powder with three particle size ranges is mixed and used according to reasonable gradation. The raw materials are easy to obtain and reasonable in matching, rapid repairing of the taphole can be achieved, limitation by the shape of the taphole is avoided, and the advantages that the service lifetime is long, and slag hanging and iron hanging are not prone to occurring after repairing are achieved. The embodiment of the invention further provides a method for repairing the taphole of the blast furnace and the submerged arc furnace, the silicon carbide hot melt solid repairing paste is adopted for repairing, operation is easy and convenient, and rapid repairing of the taphole of the blast furnace and the submerged arc furnace can be achieved.

Description

technical field [0001] The invention relates to the technical field of repairing tapholes of blast furnaces and submerged arc furnaces, in particular to a silicon carbide hot-melt repair paste and a preparation method thereof, and a method for repairing tapholes of blast furnaces and submerged arc furnaces. 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...

Claims

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Application Information

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IPC IPC(8): C04B35/567F27D1/16
CPCC04B35/565C04B35/66F27D1/1626C04B2235/425C04B2235/428C04B2235/77C04B2235/96
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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