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Method for preparing refractory shed plate

A shed board and refractory technology, applied in the field of refractory materials, can solve the problems of uneven structure, difficult adaptation, internal cracks, etc., and achieve the effects of high softening temperature under load, high production efficiency and small thermal expansion coefficient

Inactive Publication Date: 2011-08-17
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manufacturers usually use grouting, machine pressing, extrusion and other methods to shape and produce. There are problems such as uneven internal structure of the product, low strength, and easy internal cracks, which make the product easy to crack during use and difficult to adapt to modern Requirements for shed board products of ceramic industry's fast and energy-saving firing technology

Method used

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  • Method for preparing refractory shed plate
  • Method for preparing refractory shed plate
  • Method for preparing refractory shed plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Raw materials and proportions of isostatic pressing cordierite slabs:

[0021] Coarse material with particle diameter d<0.5mm 40%

[0022] Powder with particle diameter d<0.044mm 60%

[0023] Coarse material and powder material are all cordierite.

[0024] Prepare as follows:

[0025] 1) The cordierite raw material is ground to a powder below 44um for use;

[0026] 2) Mixing of powder and coarse material with a particle size of 0.5-0mm;

[0027] 3) The uniformly mixed raw materials are added to the mold, and isostatically pressed at 150Mpa to form;

[0028] 4) Release the pressure, release the mold, and take out the adobe with a manipulator;

[0029] 5) Natural drying at room temperature for 24 hours;

[0030] 6) enter the shuttle kiln for firing, the firing temperature is 1390°C, and the firing holding time is 6 hours;

[0031] 7) After cooling, grinding is performed.

[0032] The physical and chemical indicators of the product are shown in Table 1.

[0033] T...

Embodiment 2

[0036] Cordierite-Morco shed board raw materials and their proportions:

[0037] Coarse material with particle diameter d<1mm 40%

[0038] Powder with particle diameter d<0.044mm 60%

[0039] The coarse material is Morco, 50% of cordierite is added to the powder, and 10% of α-alumina micropowder is added.

[0040] Prepare as follows:

[0041] 1) The cordierite raw material is ground to a powder below 44um for use;

[0042] 2) Mixing cordierite powder, α-alumina micropowder and Morco coarse material;

[0043] 3) The uniformly mixed raw materials are added to the mold, and isostatically pressurized at 180Mpa to form;

[0044] 4) Release the pressure, release the mold, and take out the adobe with a manipulator;

[0045] 5) Natural drying at room temperature for 24 hours;

[0046] 6) enter the shuttle kiln for firing, the firing temperature is 1420°C, and the firing holding time is 16 hours;

[0047] 7) After cooling, grinding is performed.

[0048] The physical and chemic...

Embodiment 3

[0052] Cordierite-mullite slab raw materials and their ratio:

[0053] Coarse material with particle diameter d<1mm 40%

[0054] Powder with particle diameter d<0.044mm 60%

[0055] The coarse material is mullite, and the powder material is cordierite.

[0056] Prepare as follows:

[0057] 1) The cordierite raw material is ground to a powder below 44um for use;

[0058] 2) Mixing powder and mullite coarse material;

[0059] 3) The uniformly mixed raw materials are added to the mold, and isostatically pressurized at 260Mpa to form;

[0060] 4) Release the pressure, release the mold, and take out the adobe with a manipulator;

[0061] 5) Natural drying at room temperature for 24 hours;

[0062] 6) enter the shuttle kiln for firing, the firing temperature is 1420°C, and the firing holding time is 16 hours;

[0063] 7) After cooling, grinding is performed.

[0064] The physical and chemical indicators of the product are shown in Table 3.

[0065] Table 3, the quality indi...

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Abstract

The invention relates to a method for preparing a refractory shed plate, belonging to the technical field of refractory materials. The method comprises the steps of dosing, molding and sintering; coarse and fine material collocation; isostatic pressing and high temperature sintering. In the preparing process, the product has the advantages of difficulty in cracking and deformation, high production efficiency, high yield and low manufacturing cost; and the prepared product has the advantages of uniform organization structure, no internal crack, high strength at high temperature, high refractoriness under load, good thermal shock resistance and long service life; and kiln furniture consumption is largely reduced.

Description

technical field [0001] The invention relates to a method for making a refractory shed board, which belongs to the technical field of refractory materials. Background technique [0002] Refractory shed board is an important auxiliary material in the ceramic industry, which plays a decisive role in the quality and cost of ceramic products. At present, domestic refractory panels are mainly made of silicon carbide, cordierite-mullite, mullite (including sillimanite) and fused silica. Manufacturers usually use grouting, machine pressing, extrusion and other methods to shape and produce. There are problems such as uneven internal structure of the product, low strength, and easy internal cracks, which make the product easy to crack during use and difficult to adapt to modern Requirements for fast and energy-saving firing technology in the ceramic industry for shed board products. Contents of the invention [0003] The object of the present invention is to provide a method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/66
Inventor 张启山蒋绪贵刘杰李志军李玉强吴光辉范海亮李连波
Owner ZIBO GT INDAL CERAMICS
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