Anti-oxidation silicon carbide deck and production method thereof

An oxidation-resistant carbon and silicon carbide shed technology is applied in the field of oxidation-resistant silicon carbide shed and its preparation, which can solve the problems of insufficient thermal shock resistance and high temperature toughness, fracture and fracture of the shed, and achieve strong alkali metal erosion performance. , Improve the strength and thermal shock resistance, the effect of uniform structure

Inactive Publication Date: 2015-12-09
浙江长兴银兴窑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing silicon carbide shed plate has insufficient thermal shock resistance and high temperature toughness. Therefore, in the kiln of rapid firing, rapid cooling and rapid heating, the shed plate is easy to break at the weak part, especially at the shrinkage joint. , or the defects of corner and edge fractures to provide an oxidation-resistant silicon carbide shed plate with high strength, good thermal conductivity, and excellent thermal shock resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing an oxidation-resistant silicon carbide shelving board, said preparation method comprising the following steps:

[0030] a) Material selection: the particle size of silicon carbide particles is 1-3 cm, the coarse silicon carbide powder is 0.5-15 mm, the fine silicon carbide powder is 0.2-12 microns, the fine silicon carbide powder is 10-100 nanometers, and the particle size of molybdenum disulfide is 1500 nm. ;

[0031] b) Weighing according to the weight percentage of the formula, mixing and stirring silicon carbide particles, silicon carbide coarse powder, silicon carbide fine powder, silicon carbide micropowder, graphene, composite antioxidant, composite binder, and beeswax to obtain a mixed powder; The composite antioxidant is composed of antioxidant 1010, antioxidant DLTP and honey, and its mass ratio is 2:2:5;

[0032] The composite antioxidant is obtained by mixing antioxidant 1010 and antioxidant DLTP in honey, and then ultrasonically disp...

Embodiment 2

[0040] A method for preparing an oxidation-resistant silicon carbide shelving board, said preparation method comprising the following steps:

[0041] a) Material selection: the particle size of silicon carbide particles is 1-3 cm, the coarse silicon carbide powder is 0.5-15 mm, the fine silicon carbide powder is 0.2-12 microns, the fine silicon carbide powder is 10-100 nanometers, and the particle size of molybdenum disulfide is 1500 nm. ;

[0042] b) Weighing according to the weight percentage of the formula, mixing and stirring silicon carbide particles, silicon carbide coarse powder, silicon carbide fine powder, silicon carbide micropowder, graphene, composite antioxidant, composite binder, and beeswax to obtain a mixed powder; The composite antioxidant is composed of antioxidant 1010, antioxidant DLTP and honey, and its mass ratio is 2:2:5;

[0043] The composite antioxidant is obtained by mixing antioxidant 1010 and antioxidant DLTP in honey, and then ultrasonically disper...

Embodiment 3

[0051] A method for preparing an oxidation-resistant silicon carbide shelving board, said preparation method comprising the following steps:

[0052] a) Material selection: the particle size of silicon carbide particles is 1-3 cm, the coarse silicon carbide powder is 0.5-15 mm, the fine silicon carbide powder is 0.2-12 microns, the fine silicon carbide powder is 10-100 nanometers, and the particle size of molybdenum disulfide is 1500 nm. ;

[0053] b) Weighing according to the weight percentage of the formula, mixing and stirring silicon carbide particles, silicon carbide coarse powder, silicon carbide fine powder, silicon carbide micropowder, graphene, composite antioxidant, composite binder, and beeswax to obtain a mixed powder; The composite antioxidant is composed of antioxidant 1010, antioxidant DLTP and honey, and its mass ratio is 2:2:5;

[0054] The composite antioxidant is obtained by mixing antioxidant 1010 and antioxidant DLTP in honey, and then ultrasonically disp...

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Abstract

The invention relates to an anti-oxidation silicon carbide deck and a production method thereof. The anti-oxidation silicon carbide deck comprises, by mass, 30-40% of silicon carbide particles, 15-20% of silicon carbide coarse powder, 14-19% of silicon carbide fine powder, 5-10% of silicon carbide micro-powder, 10-15% of graphene, 2-4% of a composite antioxidant, 6-8% of a composite binder, 0.7-1.5% of beeswax and 0.2-0.5% of molybdenum disulfide. Lightweight silica bricks having the advantages of excellent thermal shock resistance, strong oxidation, slag and alkali metal erosion resistance, excellent washing resistance and heat insulation performance, and good high-temperature volume stability can be highly and uniformly dispersed in the deck, promote sintering, make the deck have a uniform microstructure, and improve the strength and the thermal shock resistance of the deck.

Description

technical field [0001] The invention relates to an oxidation-resistant silicon carbide shelving board with high strength, good thermal conductivity and excellent thermal shock resistance and a preparation method thereof. Background technique [0002] Due to the good chemical stability, excellent wear resistance and excellent high temperature performance of the silicon carbide matrix, the shelving board based on silicon carbide has also been widely used, and the thermal expansion and cooling of the silicon carbide shelving board during use Shrinkage, easy to cause breakage or cracks. [0003] The silicon carbide shed plate has the following defects during the firing process: 1) Due to insufficient bulk density and large porosity, it is easy to form the lowest eutectic and cause porcelain sticking and surface stains; 2) The high-temperature flexural strength is not high, Under the condition of high temperature and heavy load, the deformation degree of the shed plate is large,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/634
Inventor 景红卫
Owner 浙江长兴银兴窑业有限公司
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