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High-temperature ceramic glaze for large casting sintering furnace door brick and preparation method thereof

A technology for high-temperature ceramics and furnace door bricks, applied in the field of refractory materials, can solve the problems of reducing the physical properties of lining bricks, easy penetration of harmful substances, and high porosity of furnace door bricks, achieving a small thermal expansion coefficient, strong anti-penetration ability, and reduced maintenance. effect of times

Active Publication Date: 2017-10-03
宜兴市丁山耐火器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The purpose of the invention is to solve the problems that the existing furnace door bricks have too high porosity, easy penetration of harmful substances, reduced physical properties of lining bricks, and reduced service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-temperature ceramic glaze for large-scale pouring and sintering furnace door bricks, comprising 8 parts by weight of feldspar, 45 parts of spodumene powder, 30 parts of fused silica powder, 13 parts of α-alumina micropowder, 10 parts of raw talc powder, 5 parts 1 part zirconium dioxide, 5 parts zinc oxide and 70 parts water.

[0024] The mass ratio of the mass sum of the feldspar, spodumene powder, fused silica powder, α-alumina powder, raw talc powder, zirconium dioxide and zinc oxide to water is 5:3

[0025] The silicon dioxide content of the fused silica powder is greater than 99%.

[0026] Glaze is widely used as a functional material. Its main characteristics are its high density and strong resistance to penetration and corrosion. Coating a layer of high-temperature glaze on the surface of cordierite can prevent it from forming carbon during work. At the same time, the dense glaze layer can reduce the erosion of harmful gases on the brick body. Therefore, ...

Embodiment 2

[0028] A high-temperature ceramic glaze for large-scale pouring and sintering furnace door bricks, comprising 5 parts of feldspar, 40 parts of spodumene powder, 20 parts of fused silica powder, 7 parts of α-alumina micropowder, 5 parts of raw talc powder, and 2 parts by weight. 1 part zirconium dioxide, 2 parts zinc oxide and 48 parts water.

[0029] The mass ratio of the mass sum of the feldspar, spodumene powder, fused silica powder, α-alumina powder, raw talc powder, zirconium dioxide and zinc oxide to water is 5:3

[0030] The silicon dioxide content of the fused silica powder is greater than 99%.

[0031] Glaze is widely used as a functional material. Its main characteristics are its high density and strong resistance to penetration and corrosion. Coating a layer of high-temperature glaze on the surface of cordierite can prevent it from forming carbon during work. At the same time, the dense glaze layer can reduce the erosion of harmful gases on the brick body. Therefor...

Embodiment 3

[0033] According to parts by weight, it includes 6 parts of feldspar, 43 parts of spodumene powder, 25 parts of fused silica powder, 10 parts of α-alumina micropowder, 8 parts of raw talc powder, 4 parts of zirconium dioxide, 4 parts of zinc oxide and 59 parts of water .

[0034] The mass ratio of the mass sum of the feldspar, spodumene powder, fused silica powder, α-alumina powder, raw talc powder, zirconium dioxide and zinc oxide to water is 5:3.

[0035] The silicon dioxide content of the fused silica powder is greater than 99%.

[0036] Glaze is widely used as a functional material. Its main characteristics are its high density and strong resistance to penetration and corrosion. Coating a layer of high-temperature glaze on the surface of cordierite can prevent it from forming carbon during work. At the same time, the dense glaze layer can reduce the erosion of harmful gases on the brick body. Therefore, in order to improve the service life of cordierite furnace door bric...

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PUM

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Abstract

The invention discloses high-temperature ceramic glaze for a large casting sintering furnace door brick. The high-temperature ceramic glaze comprises, by weight, 5 to 8 parts of feldspar, 40 to 45 parts of spodumene powder, 20 to 30 parts of fused silica powder, 7 to 13 parts of alpha-alumina micro-powder, 5 to 10 parts of raw talcum powder, 2 to 5 parts of zirconium dioxide, 2 to 5 parts of zinc oxide and 48 to 70 parts of water. The invention also discloses a preparation method of the high-temperature ceramic glaze for a large casting sintering furnace door brick. Zirconium dioxide in the raw materials is precipitated in a form of zirconite crystals, the fused silica powder is partially converted into crystalline quartz, and the spodumene powder forms the beta-spodumene solid solution. Under the accurate temperature control condition, thermal insulation time is prolonged and a large amount of the beta-spodumene solid solution is precipitated so that the expansion coefficient of glaze is decreased, good density is obtained, air permeability is greatly reduced and the damage caused by carbon and harmful substances into a furnace door brick in the work process is avoided by the glaze.

Description

technical field [0001] The invention relates to a refractory material, in particular to a high-temperature ceramic glaze for a large pouring and sintering furnace door brick and a preparation method thereof. Background technique [0002] The coke oven provides important coke and gas for the smelting industry, and is an indispensable auxiliary equipment. The furnace door cordierite lining brick has a small thermal expansion coefficient and relatively high strength. It can be used at 1300 °C without decomposition and conversion, and is suitable for coke ovens. Furnace door requirements. However, due to its high porosity, harmful substances produced by coking can easily penetrate into the brick body, causing chemical corrosion and reducing the physical properties of the lining brick. At the same time, tar and carbon ash are easily adsorbed on the surface of the lining brick to form a carbon layer. The removal of the carbon layer accelerates the damage of the brick body, reduce...

Claims

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Application Information

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IPC IPC(8): C03C8/20C04B41/86
Inventor 董良军程平平李亚伟桑绍柏
Owner 宜兴市丁山耐火器材有限公司
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