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Castable for rotary kiln grate cooler wall

A grate cooler and castable technology, applied in the field of refractory materials, can solve the problems of poor wear resistance, short service life, weak thermo-mechanical abrasion and chemical erosion, etc., to achieve long service life, optimize construction performance, and improve wear resistance. The effect of resistance and alkali attack performance

Inactive Publication Date: 2016-10-26
张婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, mullite refractory castables are used in this field. The disadvantages are that the wear resistance is poor, the service life is relatively short, and the thermomechanical and chemical erosion effects on high-temperature clinker are relatively weak. It is urgent to develop a high-temperature-resistant, high-temperature Wear-resistant, high-alkali-resistant new materials to meet the performance requirements of this part

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1, 17% of sub-white corundum, 19% of silicon carbide, 30% of ferrochrome slag, 10% of zinc ferrite, 8% of magnesium zirconium olivine, 2% of magnesium potassium titanate, 1% of trizirconium aluminum nitride, magnesium 3% wollastonite, 5% alumina micropowder, 2% calcium zirconate aluminate, 3% high alumina cement; plus 1% Taiyuan purple gangue, Ti 3 SiC 2 0.5%, methallyl alcohol polyoxyethylene ether 0.1%, isopentenol polyoxyethylene ether 0.05%, aluminum potassium sulfate dodecahydrate 0.1%, chromium potassium sulfate dodecahydrate 0.05%; Pour the bagged castable into the mixer and stir evenly, then add 3-6% water, stir for 5 minutes and then cast.

Embodiment 2

[0013] Example 2, 22% of sub-white corundum, 19% of silicon carbide, 29% of ferrochrome slag, 6% of zinc ferrite, 8% of magnesium zirconium olivine, 2% of magnesium potassium titanate, 1% of trizirconium aluminum nitride, magnesium 3% wollastonite, 5% alumina micropowder, 2% calcium zirconate aluminate, 3% high alumina cement; plus 1% Taiyuan purple gangue, Ti 3 SiC 2 0.5%, methallyl alcohol polyoxyethylene ether 0.1%, isopentenol polyoxyethylene ether 0.05%, aluminum potassium sulfate dodecahydrate 0.1%, chromium potassium sulfate dodecahydrate 0.05%. When using on site, pour the bagged castable into the mixer, stir evenly, then add 3-6% water, stir for 5 minutes and pour it for use.

Embodiment 3

[0014] Example 3, 22% of sub-white corundum, 19% of silicon carbide, 28% of ferrochrome slag, 7% of zinc ferrite, 7% of magnesium zirconium olivine, 2% of magnesium potassium titanate, 2% of trizirconium aluminum nitride, magnesium 3% wollastonite, 5% alumina micropowder, 2% calcium zirconate aluminate, 3% high alumina cement; plus 1% Taiyuan purple gangue, Ti 3 SiC 2 0.5%, methallyl alcohol polyoxyethylene ether 0.1%, isopentenol polyoxyethylene ether 0.05%, aluminum potassium sulfate dodecahydrate 0.1%, chromium potassium sulfate dodecahydrate 0.05%. When using on site, pour the bagged castable into the mixer, stir evenly, then add 3-6% water, stir for 5 minutes and pour it for use.

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PUM

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Abstract

The invention provides a high-temperature-resistant, highly wear-resistant and highly alkali-corrosion-resistant castable for a rotary kiln grate cooler wall and aims at overcoming the defects of the prior art. The invention also aims at providing a preparation method of the castable. According to the technical scheme, the castable is characterized by being composed of the following components in percentage by weight: 15-25% of sub-white corundum, 10-20% of silicon carbide, 23-30% of ferrochrome slag, 5-10% of zinc ferrite, 5-8% of magnesium-zirconium olivine, 1-3% of potassium magnesium titanate powder, 1-2% of trizirconium aluminide nitride, 3-5% of silica powder, 5-10% of alumina micro powder, 2-3% of calcium aluminate zirconate and 3-5% of high-alumina cement as well as additional 1% of Taiyuan purple flower-like gangue, 0.5% of Ti3SiC2, 0.1% of methylallyl alcohol polyoxyethylene ether, 0.05% of isopentenol polyoxyethylene ether, 0.1% of aluminum potassium sulphate dodecahydrate and 0.05% of chromium potassium sulphate dodecahydrate.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a castable for grate cooler walls and a preparation method thereof. Background technique [0002] At present, my country's new dry process cement production line is developing rapidly, and the cement production capacity has been severely oversupplied. Therefore, it is the only way for cement production enterprises to increase unit production efficiency and reduce production costs to maximize profits. And improving the operation rate of the cement production line is an important condition for improving the production efficiency of the cement kiln. However, the life of the cement kiln grate cooler wall has an important impact on the operation cycle of the entire production line. The grate cooler wall of the cement kiln is used in harsh conditions. In addition to high temperature, it also bears the continuous discharge pressure of the cement kiln clinker, and the im...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 张婷
Owner 张婷
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