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Anti-oxidation refractory material and preparation method thereof

A refractory material and anti-oxidation technology, applied in the field of refractory materials, can solve the problems of less variety, large waste, low service life, high consumption, etc., and achieve the effects of reducing porosity, high refractoriness, improving strength and thermal shock resistance

Inactive Publication Date: 2015-12-09
长兴泓矿炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-oxidation refractory with high refractoriness, excellent corrosion resistance, good thermal shock resistance and wide sintering temperature range in order to solve the defects of existing refractory materials such as low service life, high consumption and large waste of varieties. refractory material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The mass parts content of each raw material of the anti-oxidation refractory material are: 60 parts of magnesium aluminum spinel of 0.35-0.88mm, 35 parts of magnesium aluminum spinel of 0.012-0.3mm, and 30 parts of magnesium aluminum spinel of 0.0125-1μm 10 parts of 1.75-10nm magnesium aluminum spinel, 5 parts of auxiliary additives, 1 part of graphene, 3 parts of binder and 2 parts of nano-alumina.

[0027] A method for preparing an anti-oxidation refractory material. The raw materials are weighed according to the above proportions, and the green body is obtained through mixing, molding, and curing. After drying at 234°C for 12 hours, after firing at 1700°C, the temperature is lowered to 1200°C for heat preservation. 2h, continue to cool down to 600°C for 3.5h, then cool down to 240°C for 6h, then cool down to room temperature for testing to obtain an anti-oxidation refractory.

Embodiment 2

[0029] The mass parts content of each raw material of the anti-oxidation refractory material are: 70 parts of magnesium aluminum spinel of 0.35-0.88mm, 40 parts of magnesium aluminum spinel of 0.012-0.3mm, and 32 parts of magnesium aluminum spinel of 0.0125-1μm 13 parts of 1.75-10nm magnesium aluminum spinel, 7 parts of auxiliary additives, 3 parts of graphene, 5 parts of binder and 4 parts of nano-alumina.

[0030] A preparation method of an anti-oxidation refractory material, each raw material is weighed according to the above ratio, mixed, formed, and maintained to obtain a green body, dried at 243°C for 14 hours, fired at 1800°C, and then lowered to 1250°C for heat preservation 2h, continue to cool down to 750°C for 3.5h, then cool down to 255°C for 6h, then cool down to room temperature for testing to obtain an anti-oxidation refractory.

Embodiment 3

[0032] The mass parts content of each raw material of the anti-oxidation refractory material is: 75 parts of magnesium aluminum spinel of 0.35-0.88mm, 45 parts of magnesium aluminum spinel of 0.012-0.3mm, and 35 parts of magnesium aluminum spinel of 0.0125-1μm 15 parts of 1.75-10nm magnesium aluminum spinel, 9 parts of auxiliary additives, 4 parts of graphene, 7 parts of binder and 6 parts of nano-alumina.

[0033] A preparation method of an anti-oxidation refractory material, each raw material is weighed according to the above ratio, mixed, formed, and maintained to obtain a green body, dried at 256°C for 16 hours, fired at 1850°C, and then lowered to 1350°C for heat preservation 2h, continue to cool down to 850°C for 3.5h, then cool down to 280°C for 6h, then cool down to room temperature for testing to obtain an anti-oxidation refractory material.

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Abstract

The invention relates to an anti-oxidation refractory material and a preparation method thereof. The anti-oxidation refractory material is prepared through adding an auxiliary additive, graphene, a binder and nano-alumina to a main raw material magnesium aluminate spinel with different particle sizes. The above product has a uniform microstructure, so the strength and the thermal shock resistance of the product are improved; nanometer zinc oxide has fine granularity and can be used to fill fine pores, so the porosity of the product is reduced, and the bulk density is improved; and the anti-oxidation refractory material also has the advantages of high refractoriness, good anti-oxidation performance, excellent erosion resistance, good thermal shock resistance and wide sintering temperature range.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an anti-oxidation refractory material with high refractoriness, high oxidation resistance, excellent corrosion resistance, good thermal shock resistance and wide sintering temperature range and a preparation method thereof. Background technique [0002] With the increasing shortage of energy, countries are paying more and more attention to the development, production and use of high-temperature industrial energy-saving materials. High-temperature kilns need to use a large number of refractory materials with excellent performance or special properties. For example, in order to prolong the service life and improve the heat exchange capacity, the glass kiln regenerator needs to have excellent corrosion resistance, creep resistance and lattice body with special shape and size. In addition, the upper structure of the oxy-fuel glass melting furnace also needs t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 佘建锋
Owner 长兴泓矿炉料有限公司
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