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Long-life iron runner castable and construction method thereof

An iron trench castable and construction method technology, applied in the field of materials, can solve problems such as large amount of water added, and achieve the effects of reducing damage, ensuring integrity, and ensuring uniformity

Pending Publication Date: 2019-10-25
中冶武汉冶金建筑研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has a large amount of water added and contains a lot of low-melting materials such as clay.

Method used

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  • Long-life iron runner castable and construction method thereof
  • Long-life iron runner castable and construction method thereof
  • Long-life iron runner castable and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A long-life (main) iron trench castable, the components and their mass percentages are: dense corundum 56%; silicon carbide 0-1mm: 11%; ball asphalt 3%; pure calcium aluminate cement 2% 12% of alumina micropowder; 1% of high-purity silica micropowder; 12.27% of silicon carbide powder; 2% of composite antioxidant; 0.2% of nano-carbon black; Aerosol 0.03%. The raw materials were weighed according to the above proportions and fully mixed; then water was added (the mass of water was 3.7% of the total mass of each raw material) and stirred evenly, then vibrated and formed; Heat treatment was carried out for 24 hours, and the long-life (main) iron trough castable sample was prepared.

[0053] The long-life (main) iron trough castable sample prepared in this embodiment was tested for performance, and the results are shown in Table 1. The performance testing method used is carried out in accordance with the current national standards or industry standards, and the test result...

Embodiment 2

[0057] A long-life (main) iron trench castable, the components and their mass percentages are: dense corundum 64%; silicon carbide 0-1mm: 5%; ball pitch 2%; pure calcium aluminate cement 1.5% 10.55% of alumina micropowder; 1.5% of high-purity silica micropowder; 13% of silicon carbide powder; 1.5% of composite antioxidant; 0.6% of nano-carbon black; Aerosol 0.02%. The raw materials were weighed according to the above proportions and fully mixed; then water was added (the mass of water was 3.6% of the total mass of each raw material) and stirred evenly, and then vibrated and formed; Heat treatment was carried out for 24 hours, and the long-life (main) iron trough castable sample was prepared.

[0058] The long-life (main) iron trough castable sample prepared in this embodiment was tested for performance, and the results are shown in Table 2. The performance testing method used is carried out in accordance with the current national standards or industry standards, and the test...

Embodiment 3

[0062] A long-life (main) iron trench castable, the components and their mass percentages are: dense corundum 59%; silicon carbide 0-1mm: 13%; ball pitch 2.93%; pure calcium aluminate cement 1.75% ; Alumina micropowder 8%; High-purity silica micropowder 2%; Silicon carbide powder 11%; Composite antioxidant 1%; Nano-carbon black 1%; Aerosol 0.01%. The raw materials were weighed according to the above proportions and fully mixed; then water was added (the mass of water was 3.6% of the total mass of each raw material) and stirred evenly, and then vibrated and formed; Heat treatment was carried out for 24 hours, and the long-life (main) iron trough castable sample was prepared.

[0063] The long-life (main) iron trough castable sample prepared in this embodiment was tested for performance, and the results are shown in Table 3. The performance testing method used is carried out in accordance with the current national standards or industry standards, and the test results obtained ...

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Abstract

The invention discloses a long-life iron runner castable and a construction method thereof. The long-life iron runner castable is prepared from the components in percentage by mass: 56-64% of dense corundum, 5-13% of silicon carbide of 0-1mm, 2-3% of ball pitch, 1.5-2% of pure calcium aluminate cement, 7-12% of alumina micro powder, 1-2% of high purity silica micro powder, 11-13% of silicon carbide powder, 0.2-1% of nano carbon black, 1-2% of a composite antioxidant; 0.1-0.2% of metal aluminum powder, 0-0.1% of explosion-proof fibers, 0.1-0.2% of a dispersant and 0.01-0.03% of an air entraining agent. The construction method comprises the steps that an annual repair construction mold and a daily periodical repair mold are different in size, under the premise that the thickness of the ironrunner castable at the bottom of an iron runner is 500mm or above, the size of the annual repair construction mold is 150mm wider and 80mm deeper than that of the daily periodical repair mold.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a long-life iron ditch castable. Background technique [0002] In recent years, with the high price of steel products, various iron and steel enterprises have strengthened the smelting of blast furnaces in order to seize production. The blast furnace iron trough is an important part of the ironmaking process. The extension of the regular repair cycle of the main iron trough Steel companies are extremely important. How to ensure the service life of the iron channel material and prolong the fixed repair cycle of the blast furnace under the premise of ensuring safe use is an important issue. At present, there are a few places at home and abroad where the main ditch is not repaired at one time, and the amount of iron passing through it reaches 200,000 tons. There are reports that the amount of iron passing through repairing reaches 300,000 tons, but there is no report ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101C21B7/14
CPCC04B35/101C04B2235/3217C04B2235/3222C04B2235/3418C04B2235/3821C04B2235/3826C04B2235/402C04B2235/428C04B2235/77C04B2235/96C04B2235/9607C21B7/14
Inventor 魏建修王文存
Owner 中冶武汉冶金建筑研究院有限公司