Super intensified abrasion-proof pouring material

A castable, ultra-high-strength technology, applied in the field of wear-resistant castables, can solve problems such as rising production costs, falling equipment operating rates, and harsh working conditions, and achieve the effects of prolonged service life, reliable quality, and uniform mixing

Inactive Publication Date: 2007-07-11
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In cement, electric power, metallurgy, petrochemical and other related industries, high-temperature kilns and pipeline components need to use wear-resistant castables as linings because they need to withstand strong erosion, abrasion and corrosion of various materials. The castable lining has poor properties such as high temperature resistance, impact resistance, wear resistance and strength. After a short period of use, the lining will be damaged, resulting in production shutdown and maintenance, a decrease in equipment operation rate, and an increase in production costs. Series of environmental issues
[0003] Taking the 5000T / day precalcining kiln in the cement industry as an example, the lining of the tertiary air duct elbow must not only withstand severe alkali corrosion at a high temperature of 800-1200 ℃, but also withstand high-speed three The wind and air flow scour, so the working conditions are bad. The high-alumina castable lining is used, and the service life is only one month. The mullite corundum castable lining is used, and the service life is two months. HMS high wear-resistant bricks and mullite are used. The combined frame structure of corundum castables can only last for four months. Once there is a hidden danger in the pipe wall lining at the elbow of the air duct, emergency measures such as packing boxes have to be taken to barely maintain production operation; once the pipe wall lining is damaged , that is, re-construction is required, which seriously affects production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Ultra-high-strength wear-resistant castable formula

[0035] The weight percent of each component is:

[0036] Corundum Al 2 o 3 ≥92% particle size is 5-3mm or / and 3-1mm accounted for 50-70%

[0037] Silicon carbide SiC≥95% 1-0mm accounts for 10-20%

[0038] Corundum powder Al 2 o 3 ≥92% fineness: 8-12% through 180 mesh sieve

[0039] Bauxite powder Al 2 o 3 ≥88% fineness: 6-10% through 180 mesh sieve

[0040] Silica micropowder accounts for 4-7%

[0041] Pure calcium aluminate cement accounts for 5-8%.

[0042] Stainless steel fiber plus 1-3%

[0043] Explosion-proof fiber plus 0.05-0.15%

[0044] Water reducing agent plus 0.1-0.2%.

[0045] 2. Homogenize each raw material component

[0046] 3. Pouring construction

[0047] Use a forced mixer for kneading, and strictly control the amount of water added to stabilize at about 5-6%, which not only ensures a certain fluidity, but also ensures the low moisture and high density of the construction body. The co...

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Abstract

The invention discloses a hyper-high strong abrasion-proof casting material, which comprises the following parts: corundum, carborundum, pulverized corundum, bauxite powder, silicon oxide powder, pure calcium aluminate cement and additive, wherein the adding quantity of each component is forced to homogenize, which couples metal and non-metal material in the constructing course.

Description

technical field [0001] The invention belongs to an industrial wear-resistant material, in particular to a wear-resistant pouring material. Background technique [0002] In cement, electric power, metallurgy, petrochemical and other related industries, high-temperature kilns and pipeline components need to use wear-resistant castables as linings because they need to withstand strong erosion, abrasion and corrosion of various materials. The castable lining has poor properties such as high temperature resistance, impact resistance, wear resistance and strength. After a short period of use, the lining will be damaged, resulting in production shutdown and maintenance, a decrease in equipment operation rate, and an increase in production costs. series of environmental issues. [0003] Taking the 5000T / day precalcining kiln in the cement industry as an example, the lining of the tertiary air duct elbow must not only withstand severe alkali corrosion at a high temperature of 800-12...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B14/30C04B14/48
Inventor 张金龙李存弼周健
Owner ANHUI RUITAI NEW MATERIALS TECH
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