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Anti-cracking refractory castable for kiln and preparation method of anti-cracking refractory castable

A refractory castable and anti-cracking technology, which is applied in the field of refractory materials, can solve the problems of castable strength reduction and cracking, and achieve the effects of preventing cracking, reducing water addition, and enhancing explosion-proof performance

Pending Publication Date: 2021-09-07
成都欧乐启新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the refractory castables used in some kilns now use bauxite as the main raw material. When the castable is vibrated by vibrating equipment, a large amount of water is required to improve the fluidity of the castable, and the castable is used for a long time After that, cracking is prone to occur, which leads to a decrease in the strength of the castable

Method used

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  • Anti-cracking refractory castable for kiln and preparation method of anti-cracking refractory castable

Examples

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preparation example Construction

[0020] The preparation method of the anti-cracking refractory castable for the kiln comprises the following preparation steps:

[0021] (1) Mix the raw materials of the anti-cracking refractory castable for kiln, stir evenly, pour and vibrate and form and dry naturally for 1-3 days to obtain the body of anti-cracking refractory castable for kiln;

[0022] (2) Dry the body of the anti-cracking refractory castable for kiln at a high temperature of 110-130° C. for 12-36 hours, and cool it at room temperature to obtain the anti-cracking refractory castable for kiln.

Embodiment 1

[0024] An anti-cracking refractory castable for a kiln, comprising the following raw materials in parts by weight: 30 parts of alumina ceramic whiskers, 5 parts of silicon carbide whiskers, 3 parts of aluminum carbide whiskers, 8 parts of silicon oxide whiskers, 4 parts of basalt fiber, 0.2 parts of sodium tripolyphosphate, 1 part of polydimethylsiloxane, 3 parts of aluminum silicate cement, 20 parts of deionized water. Wherein, the average diameter of the alumina ceramic whiskers is 40 μm, the average diameter of the silicon carbide whiskers is 10 μm, the average diameter of the aluminum carbide whiskers is 30 μm, and the average diameter of the silicon oxide whiskers is 5 μm , the average diameter of the basalt fiber is 2 μm, and the average length is 60 μm.

[0025] The preparation method of the anti-cracking refractory castable for the kiln comprises the following preparation steps:

[0026] (1) Mix the raw materials of the anti-cracking refractory castable for kiln, stir...

Embodiment 2

[0029] An anti-cracking refractory castable for a kiln, comprising the following raw materials in parts by weight: 40 parts of alumina ceramic whiskers with an average diameter of 50 μm, 7 parts of silicon carbide whiskers, 4 parts of aluminum carbide whiskers, 13 parts of oxide Silicon whiskers, 5 parts of basalt fiber, 0.3 parts of sodium tripolyphosphate, 1.5 parts of polydimethylsiloxane, 6 parts of aluminum silicate cement, 30 parts of deionized water. Wherein, the average diameter of the alumina ceramic whiskers is 50 μm, the average diameter of the silicon carbide whiskers is 15 μm, the average diameter of the aluminum carbide whiskers is 35 μm, and the average diameter of the silicon oxide whiskers is 7 μm , the average diameter of the basalt fiber is 5 μm, and the average length is 70 μm.

[0030] The preparation method of the anti-cracking refractory castable for the kiln comprises the following preparation steps:

[0031] (1) Mix the raw materials of the anti-crack...

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Abstract

The invention belongs to the field of refractory materials, and particularly relates to an anti-cracking refractory castable for a kiln and a preparation method of the anti-cracking refractory castable. The anti-cracking refractory castable for the kiln is prepared from the following raw materials in parts by weight: 30 to 50 parts of aluminum oxide ceramic whiskers, 5 to 10 parts of silicon carbide whiskers, 3 to 5 parts of aluminum carbide whiskers, 8 to 18 parts of silicon oxide whiskers, 4 to 6 parts of basalt fibers, 0.2 to 0.4 part of sodium tripolyphosphate, 1 to 2 parts of polydimethylsiloxane, 3 to 8 parts of aluminum silicate cement and 20 to 40 parts of deionized water. According to the anti-cracking refractory castable for the kiln, the refractory materials with different average diameters are adopted as main materials, the compression strength of the anti-cracking refractory castable for the kiln can be improved while the compactness is enhanced, the toughness of the castable is enhanced by adding the basalt fibers, and the shock resistance and the explosion-proof performance are improved.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an anti-cracking refractory castable for kilns and a preparation method thereof. Background technique [0002] When the kiln is in use, it is necessary to coat a layer of refractory castable on the inner wall. The refractory castable is a mixture composed of refractory aggregates, binders and admixtures. It can be prepared by adding water or liquid binders. Mud for construction. At present, most of the refractory castables used in some kilns now use bauxite as the main raw material. When the castable is vibrated by vibrating equipment, a large amount of water is required to improve the fluidity of the castable, and the castable is used for a long time After that, it is prone to cracking, which leads to a decrease in the strength of the castable. Contents of the invention [0003] In view of this, the present invention provides an anti-cracking refractory castable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/5276C04B2235/5244C04B2235/5224C04B2235/5232C04B2235/447C04B2235/3463C04B2235/9607C04B2235/96C04B2235/77
Inventor 谭凤香
Owner 成都欧乐启新材料科技有限公司
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