Zirconium-containing re-sintered electrically-fused mullite brick and preparation method thereof

A technology for fused mullite and mullite bricks, which is applied in the field of zirconium-containing re-sintered fused mullite bricks and its preparation, can solve problems such as environmental impacts, and achieve molding performance, high product strength, and preparation methods simple and easy effects

Inactive Publication Date: 2019-02-15
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with recombined fused mullite bricks, the alkali corrosion resistance is improved, but the introduction of chromium oxide green is easy to affect the environment

Method used

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  • Zirconium-containing re-sintered electrically-fused mullite brick and preparation method thereof
  • Zirconium-containing re-sintered electrically-fused mullite brick and preparation method thereof
  • Zirconium-containing re-sintered electrically-fused mullite brick and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1-20

[0033] The types of raw materials, particle size specifications and parts by weight of the zirconium-containing re-sintered fused mullite bricks are as follows:

[0034] Table 1

[0035]

[0036]

[0037] Table 2

[0038]

[0039] table 3

[0040]

[0041]

[0042] The preparation method of the 1-16 zirconium-containing re-sintered fused mullite brick comprises the following steps:

[0043] (1) Fused mullite fine powder, zirconium-containing material fine powder, Al 2 o 3 Micropowder, SiO 2 Mix the fine powder and solid binder fine powder evenly to obtain premixed fine powder;

[0044] (2) Semi-dry mixing: first put the fused mullite particles with a particle size > 0.1mm into the mixer for mixing, then add the liquid binder and mix evenly, then add the premixed fine powder obtained in step (1) , mixed for 10-20min to prepare a semi-dry mud material, and the material was trapped for 4-5h;

[0045] (3) Machine pressing or isostatic pressing, drying, drying...

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Abstract

The invention belongs to the technical field of functional materials, and relates to a zirconium-containing re-sintered electrically-fused mullite brick and a preparation method thereof. The brick isprepared from raw materials in percentage by mass as follows: 70%-95% of electrically-fused mullite, 2%-12% of zirconium-containing substances, 0-27% of Al2O3 micro-powder, 0-10% of SiO2 micro-powderand 0.1%-5% of an additive. According to the brick and the preparation method, zirconia is added to the electrically-fused mullite, so that the alkali vapor erosion resistance and the thermal stress impact resistance are improved while the refractoriness under load is high; and the preparation method of the zirconium-containing re-sintered electrically-fused mullite brick is simple, easy to implement, energy-saving and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a zirconium-containing re-sintered fused mullite brick and a preparation method thereof. Background technique [0002] With the development of material technology, the requirements for thermal equipment used in the material industry are getting higher and higher. High-temperature and ultra-high-temperature thermal equipment, oxy-fuel combustion and increasingly harsh operating conditions require that the performance of refractory materials used in thermal equipment should also be continuously improved. Re-sintered fused mullite bricks have the advantages of high load softening point temperature, good volume stability at high temperature, low high temperature creep rate, etc., and are widely used in high temperature parts of thermal furnaces and flame spaces of glass furnaces. top parts. However, the service life of re-sintered fused mullite bricks is affected in part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622C04B35/634C04B35/636
CPCC04B35/185C04B35/622C04B35/63416C04B35/63452C04B35/63468C04B35/6365C04B2235/3217C04B2235/3244C04B2235/3418
Inventor 张晓峰孙文礼李玉强张瑛李志军史永鹏李凯李芳王倩倩杨舒琪
Owner ZIBO GT INDAL CERAMICS
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