Fused high-iron ferriporphyrin mullite recombined high-dense brick and manufacture method thereof

A mullite and recombination technology, applied in the field of refractory materials, can solve the problems of affecting service life, surface and internal cracks, etc., and achieve high production efficiency, no gas spallation, and good compactness

Active Publication Date: 2009-12-23
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are shrinkage cavities in the internal structure of electro-cast high-iron mullite bricks, and there are many surface and internal cracks, which affect its service life

Method used

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  • Fused high-iron ferriporphyrin mullite recombined high-dense brick and manufacture method thereof
  • Fused high-iron ferriporphyrin mullite recombined high-dense brick and manufacture method thereof

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Experimental program
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Effect test

Embodiment 1-3

[0022] 1. Raw material ratio and process parameters

[0023] Table 1 raw material ratio and process parameter table

[0024]

[0025]

[0026] Second, the process steps:

[0027] 1) Raw material ratio: According to Table 1 ingredients

[0028] 2) Raw material grinding

[0029] The fine powder of high-iron fused mullite with a particle size of 200 mesh and water are added to a stirring mill for wet grinding to form a slurry with a particle size of D50=5±3 μm.

[0030] 3) Spray granulation: The slurry enters the spray granulator to discharge water to make granulated powder with a particle size of 0.1-0.5mm.

[0031] 4) Forming: forming with a flexible mold.

[0032] 5) Firing: Firing in a kiln with precise temperature control, the firing system is shown in Table 1.

[0033] 3. The physical and chemical indicators of the product: as shown in the table below

[0034] Table 2: Product physical and chemical parameters table

[0035] Example

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Abstract

The invention relates to a fireproof material, in particular to fused high-iron ferriporphyrin mullite recombined high-compact brick and a manufacture method thereof. The high-compact brick is characterized by comprising the following materials based on oxides in percentage by weight: 15-30 SiO2, 65-85 Al2O3, 1-3 ZrO and 2-5 Fe2O3, and the phase composition comprises a main phase of ferriporphyrin mullite and a glass phase as a subsidiary crystal phase. Compared with the prior art, the product has higher mechanical strength, compacter structure and flawless internal structure of the product and is burnt by adopting accurate temperature control so that the product has no crack.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an electro-fused high-iron mullite recombined high-density brick and its manufacturing method. The product of the invention is used as a bottom material for a steel rolling heating furnace, and has fire resistance, wear resistance and mechanical shock resistance , Corrosion resistance and other characteristics. Background technique [0002] The electric melting casting high-speed iron mullite brick for rolling steel heating furnace is a fire-resistant, wear-resistant, mechanical shock-resistant, and erosion-resistant bottoming material produced by electric melting and casting. It requires excellent mechanical impact resistance of high-temperature-resistant billets and high-temperature-resistant iron oxide Corrosion properties of slag. In the prior art, the internal structure of electro-cast high-iron mullite bricks has shrinkage cavities, and there are m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185
Inventor 张启山张瑛蒋绪贵冯延春王志霞
Owner ZIBO GT INDAL CERAMICS
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