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Unfired SiC kiln furniture material and production method thereof

A production method and silicon carbide kiln technology, applied in the field of non-burning SiC kiln furniture materials and its production, can solve the problems of inability to prepare complex shapes, low molding efficiency, high firing temperature, etc., and achieve low production cost, high molding efficiency, The effect of high carbon residue rate

Inactive Publication Date: 2013-09-04
DONGE COUNTY LUXI METALLURGY REFRACTORY MATERIALCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the heat treatment temperature of silicon carbide materials in this process is relatively low, it is still far higher than the final heat treatment temperature of the patent of the present invention, and it adopts a compression molding process, which has the disadvantages of a compression molding process
[0007] Apparently, none of the technologies disclosed above solves the problems of high firing temperature, low molding efficiency, and the inability to prepare components with complex shapes for firing SiC refractory materials for ceramics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A production method of non-burning SiC kiln furniture materials: 40% of green silicon carbide with a particle size of 8-20 mesh, 26% of green silicon carbide with a particle size of 36-80 mesh, and 30% of green silicon carbide with a particle size of less than 240 Purpose Green silicon carbide, 4% crystalline silicon powder, and 7% silicone resin are mixed evenly in a mixer, and the stirred castable is put into the mold, and then the mold is placed on a vibrating table for vibration molding and demoulding. Bake at 180°C for 16 hours to obtain unfired SiC refractories for ceramic firing.

Embodiment 2

[0018] A kind of production method of unfired SiC refractory material: 20% of particle size is 8-20 mesh black dense silicon carbide, 45% of particle size is 36-80 mesh black dense silicon carbide, 20% of particle size is less than 240-mesh green silicon carbide, 15% crystalline silicon powder, and 10% silicone resin are mixed evenly in a mixer, and the stirred castable is put into the mold, and then the mold is placed on a vibration table for vibration molding, demoulding After baking at 450°C for 8 hours, an unfired SiC refractory material for ceramic firing can be obtained.

Embodiment 3

[0020] A kind of production method of unburned SiC refractory material: 30% of particle size is 8-20 mesh black dense silicon carbide, 40% of particle size is 36-80 mesh black dense silicon carbide, 22% of particle size is less than 240-mesh green silicon carbide, 8% crystalline silicon powder, and 10% silicone resin are mixed evenly in a mixer, and the stirred castable is added to the mold that has been heated to 200°C in the heating furnace, and then the mold is placed Vibration forming on a vibrating table, and baking at 300°C for 8 hours after demoulding, to obtain unfired SiC refractories for ceramic firing.

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Abstract

The invention discloses an unfired SiC kiln furniture material and a production method thereof. The production method comprises the following steps: performing uniform dry mixing on silicon carbide and crystalline silicon powder having different particle sizes in a stirrer, adding organic silicon resin, and uniformly mixing; adding the well-stirred casting material into a mold, placing the mold on a vibration table, and performing vibration molding; and demolding, and baking at 280-450 DEG C for 8-16 hours to obtain the SiC kiln furniture material, wherein the SiC kiln furniture material can be used without being fired at high temperature. According to the invention, the SiC kiln furniture material is formed by cast molding and can be formed into any shape; and for an integral lining made of the SiC kiln furniture material, the service life can be prolonged by 30-150% or even several times. Besides, due to integral molding, all components have no seam, thus achieving favorable air tightness and less heat radiation loss and saving energy. Meanwhile, by omitting high-temperature treatment, the production cost of the SiC kiln furniture material for ceramic firing can be greatly lowered. The unfired SiC kiln furniture material for ceramic firing, produced by the invention, has favorable service performance.

Description

Technical field [0001] The invention belongs to the field of kiln furniture materials, and in particular relates to an unfired SiC kiln furniture material used in the ceramic industry and a production method thereof. Background technique [0002] SiC kiln furniture material is a special kiln furniture material used for firing ceramics. It has excellent high-temperature performance and can be fired into high-quality ceramic products. The existing molding process of silicon carbide kiln furniture materials is mainly compression molding and grouting molding. After the blank is formed, it needs to be fired at a high temperature before it can become a product. Such as the technology disclosed in the Chinese invention patent application "Silicon Oxide Bonded Carbonized Refractories" with the publication number CN1099018A is just like this: choose silicon carbide that is cleaned by water and magnetically separated to remove iron and other harmful substances as raw material, and us...

Claims

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Application Information

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IPC IPC(8): C04B35/565C04B35/66
Inventor 田伟鲲田守忠郑学贞王伟陶绪泉
Owner DONGE COUNTY LUXI METALLURGY REFRACTORY MATERIALCO LTD