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Low-cost energy-saving high heat-shake resistant kiln appliance and preparation method thereof

A thermal shock-resistant and low-cost technology, applied in the field of refractory materials, can solve the problems of wasting sintering energy, decline in thermal shock resistance, affect quality, etc. Effect

Inactive Publication Date: 2011-06-22
SHANDONG CERAMIC IND ASSOC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the daily-use ceramics industry, it is suitable for kiln furniture materials such as saggers below 1300 °C. At present, the domestic cordierite light clinker refractory material is prepared by mixing the binder and clinker with water, and then vacuum smelting and molding. , and then oxidized flame firing, the number of times the material is used is only 60 to 90 times, the thermal shock resistance in the later period drops sharply, and the kiln furniture begins to burst, resulting in slag defects in ceramic products, and improper preparation and handling of mud materials, which is extremely serious. It is easy to cause pollution to bisque fired ceramic products. These two defects directly affect the quality of ceramic products by more than 10%, and the strength of the sagger is weak, which will inevitably increase the wall thickness of the sagger product, which not only increases the cost of raw materials, but also waste of burning energy

Method used

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  • Low-cost energy-saving high heat-shake resistant kiln appliance and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The kiln furniture with low cost, energy saving and high thermal shock resistance described in the present invention has the following ingredients by weight percentage: 6% of Laiwu clay, 10% of Mashan clay, 28% of Shuoxian clay, 21% of cooked coke gemstone, and 21% of Fangzi clay. Clay 10%, Gemstone 13% and Talc 12%.

[0030] The crystal phase weight percentage is as follows: cordierite crystal phase 40%, mullite crystal phase 25% and liquid phase 35%.

[0031] Preparation:

[0032] It is prepared by batching, wet ball milling, iron removal and sieving, and then filtering mud, vacuum mud refining, rolling molding or slurry injection molding, and then firing with reducing flame.

[0033] The particle size of the batching raw materials is controlled to be less than 0.5 mm, and the raw materials with a particle size of less than 10 μm account for 60% of the total raw material weight.

[0034] The firing system is as follows:

[0035] Entering the kiln——1040℃ oxidation f...

Embodiment 2

[0041] The kiln furniture with low cost, energy saving and high thermal shock resistance described in the present invention has the following ingredients by weight percentage: 5% of Laiwu clay, 11% of Mashan clay, 22% of Shuoxian clay, 12% of cooked coke gem, 12% of Fangzi Clay 12%, Green Gemstone 18% and Talc 20%.

[0042] The crystal phase weight percentage is as follows: cordierite crystal phase 42%, mullite crystal phase 26% and liquid phase 32%.

[0043] Preparation:

[0044] Sequentially through batching, wet ball milling, iron removal and sieving, and then filtering mud, vacuum mud refining, rolling molding or slurry injection molding, and then firing in a reducing flame.

[0045] The particle size of the batching raw materials is controlled to be less than 0.5 mm, and the raw materials with a particle size of less than 10 μm account for 70% of the total raw material weight.

[0046] The firing system is as follows:

[0047] Entering the kiln——1040℃ oxidation flame ...

Embodiment 3

[0053] The kiln furniture with low cost, energy saving and high thermal shock resistance according to the present invention has the following ingredients by weight percentage: 8% of Laiwu clay, 15% of Mashan clay, 20% of Shuoxian clay, 16% of cooked coke gem, 16% of Fangzi Clay 10%, Greenstone 17 and Talc 14%.

[0054] The crystal phase weight percentage is as follows: cordierite crystal phase 25%, mullite crystal phase 32% and liquid phase 43%.

[0055] Preparation:

[0056] Sequentially through batching, wet ball milling, iron removal and sieving, and then filtering mud, vacuum mud refining, rolling molding or slurry injection molding, and then firing in a reducing flame.

[0057] The particle size of the batching raw materials is controlled to be less than 0.5 mm, and the raw materials with a particle size of less than 10 μm account for 57% of the total raw material weight.

[0058] The firing system is as follows:

[0059] Entering the kiln——1020℃ oxidation flame

[0060...

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Abstract

The invention relates to a low-cost, energy-saving kiln furniture with high thermal shock resistance and a preparation method for products thereof, belonging to the technical field of refractory materials. The invention is mainly for products like saggers with a crystal phase composition by weight as follows: 10.21-58.29% of cordierite crystal phase, 11.5-40% of mullite and 30-51.51% of liquid phase and with a chemistry composition by weight as follows: 40.3-52% of SiO2, 34-48% of Al2O3, 0.29-0.95% of Fe2O3, 0.18-1.36% of TiO2, 0.25-0.77% of CaO, 6.18-13% of MgO and 0.1-2.01% of KNaO. The products are produced by the following steps in turn: burdening, wet ball-milling and fine grinding, iron removing and screening, mud filtering, vacuum mud refining, rolling molding or pulp-slip casting and sintering with reducing flame. The products with high strength and good thermal shock resistance are provided with a long service life and a low application cost and the preparation method is scientific, simple and easy.

Description

technical field [0001] The invention relates to a kiln furniture with low cost, energy saving and high thermal shock resistance and a preparation method thereof, which belongs to the technical field of refractory materials and is mainly aimed at products such as saggers. Background technique [0002] In the daily-use ceramics industry, it is suitable for kiln furniture materials such as saggers below 1300 °C. At present, the domestic cordierite light clinker refractory material is prepared by mixing the binder and clinker with water, and then vacuum smelting and molding. , and then oxidized flame firing, the number of times the material is used is only 60 to 90 times, the thermal shock resistance in the later stage drops sharply, and the kiln furniture begins to burst, resulting in slag defects in ceramic products, and improper preparation and handling of mud materials, which is extremely serious. It is easy to cause pollution to bisque-fired ceramic products. These two defe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/185C04B35/195C04B35/64
Inventor 田承贵
Owner SHANDONG CERAMIC IND ASSOC