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Fire resistant brick used for lining of thermal equipment and preparation method thereof

A refractory brick and equipment technology, applied in the field of refractory bricks, can solve the problems of high energy consumption due to overheating of the shell, enrichment and corrosion of shell materials, etc., to maintain temperature stability, buffer temperature-stress changes, and improve thermal shock resistance Effect

Active Publication Date: 2016-10-26
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the defects of the prior art, and aims to provide a refractory brick used for the lining of thermal equipment and a preparation method thereof. The temperature of the equipment shell is stabilized, which can solve the problems of high energy consumption due to overheating of the shell and the accumulation of low-temperature medium in the shell to corrode the shell material

Method used

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Embodiment 1

[0031] A refractory brick used for thermal equipment lining and a preparation method thereof. The preparation method described in this embodiment is:

[0032]20-25wt% of corundum particles, 5-10wt% of high alumina bauxite particles, 10-15wt% of corundum-alloy composite particles and 25-30wt% of high-alumina bauxite-alloy composite particles are used as aggregates; ~15wt% corundum fine powder and 15~20wt% high alumina fine powder are used as the base material, and the sum of the aggregate and the base material is the raw material. Mix the base material evenly to obtain a pre-mixed base material; then mix and grind the aggregate and 2-5wt% resin of the raw material for 3-10 minutes to obtain a mixed-milled aggregate, and then grind the mixed-milled bone The raw material is added into the premixed base material, ground, pressed and formed, and heat treated at 150-200° C. for 12-22 hours to prepare a refractory brick for thermal equipment lining.

[0033] The preparation methods...

Embodiment 2

[0040] A refractory brick used for thermal equipment lining and a preparation method thereof. The preparation method described in this embodiment is:

[0041] 15-20wt% of corundum particles, 10-15wt% of high alumina bauxite particles, 15-20wt% of corundum-alloy composite particles and 20-25wt% of high-alumina bauxite-alloy composite particles are used as aggregates; ~15wt% corundum fine powder and 15~20wt% high alumina fine powder are used as the base material, and the sum of the aggregate and the base material is the raw material. Mix the base material evenly to obtain a pre-mixed base material; then mix and grind the aggregate and 2-5wt% resin of the raw material for 3-10 minutes to obtain a mixed-milled aggregate, and then grind the mixed-milled bone The raw material is added to the premixed base material, ground, pressed and formed, and heat treated at 180-220° C. for 20-30 hours to obtain a refractory brick for thermal equipment lining.

[0042] The preparation methods ...

Embodiment 3

[0049] A refractory brick used for thermal equipment lining and a preparation method thereof. The preparation method described in this embodiment is:

[0050] 10-15wt% of corundum particles, 15-20wt% of high alumina bauxite particles, 20-25wt% of corundum-alloy composite particles and 15-20wt% of high-alumina bauxite-alloy composite particles are used as aggregates; ~20wt% corundum fine powder and 10~15wt% high alumina fine powder are used as the base material, and the sum of the aggregate and the base material is the raw material. Mix the base material evenly to obtain a pre-mixed base material; then mix and grind the aggregate and 2-5wt% resin of the raw material for 3-10 minutes to obtain a mixed-milled aggregate, and then grind the mixed-milled bone The raw material is added into the premixed base material, ground, pressed and formed, and heat treated at 200-260° C. for 28-38 hours to prepare a refractory brick for thermal equipment lining.

[0051] The preparation metho...

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Abstract

The invention relates to a fire resistant brick used for a lining of thermal equipment and a preparation method thereof. The preparation method includes the steps of: 1) employing 5-25 wt% of corundum granules, 5-25 wt% of high bauxite granules, 10-30 wt% of corundum-alloy composite granules and 10-30 wt% of high bauxite-alloy composite granules as aggregates and 10-20 wt% of corundum fine powder and 10-20 wt% of high bauxite fine powder as base materials; 2) mixing the base materials uniformly to prepare a pre-mixed base material; 3) mix-grinding the aggregates with resin to prepare a mix-ground aggregate, and adding the mix-ground aggregate to the pre-mixed base material, grinding the mixture, press-moulding a brick, and performing thermal-treatment at 150-300 DEG C for 12-48 h to prepare the fire resistant brick used for the lining of thermal equipment. The brick can regulate temperature automatically and can stabilize the temperature of a shell of the equipment when environment temperature or medium temperature in the thermal equipment is changed, so that problems of high energy consumption due to overheat of the shell and corrosion on the shell material due to enrichment of low-temperature medium in the shell.

Description

technical field [0001] The invention belongs to the technical field of refractory bricks. Specifically relates to a refractory brick used for thermal equipment lining and a preparation method thereof. Background technique [0002] Refractory materials are directly used in metallurgy, building materials, petrochemical, electric power high-temperature kilns, pipelines and other thermal equipment. They are the lining materials of these thermal equipment and play an irreplaceable role in ensuring the safe and stable operation of the above industries and economic development. With the rapid development of the economy, resources and energy are also rapidly consumed. The sustainable development of the economy puts forward higher requirements for high-temperature equipment lining refractory materials and their applications: not only the long service life of high-temperature lining materials and the safe operation of high-temperature equipment are required, but also Equipment and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101C04B35/622C09K5/06
CPCC04B35/101C04B35/622C04B2235/77C04B2235/96C04B2235/9607C09K5/06
Inventor 张美杰黄奥顾华志罗志安杨梦
Owner WUHAN UNIV OF SCI & TECH
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