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Preparation method of high-strength mullite castable

A technology of mullite and castables, which is applied in the field of refractory material processing, can solve the problems of production process influence, strength and stability not conforming to actual production, etc., and achieve the effects of ensuring properties, improving product quality, and improving strength

Inactive Publication Date: 2018-02-23
成都市丹炉高温科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the strength and stability of mullite materials on the market do not meet the needs of actual production, which has brought a certain impact on the subsequent production process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing a high-strength mullite castable, comprising the following steps:

[0019] a. Put mullite, brown corundum, and zirconium materials into a crusher for crushing. After being crushed into granules, put the granules into a mixer and add water for stirring. The stirring time is 10 minutes to obtain mixed granules A;

[0020] b Put the SiO2 micropowder, heat-resistant steel fiber, and nano-barite powder into a ball mill and mix them for 20 minutes to make them mix evenly and fully to obtain the mixture B;

[0021] c. Put the mixed particle A and the mixed material B into a vacuum mixer, add the binder and water, and stir for 50 minutes under vacuum conditions to obtain the mixed material C;

[0022] d Pour the mixture C into a clean fixed mould, use a vibrating rod to vibrate and shape in layers, and wait until the surface is flooded, and the product is ready;

[0023] The above raw materials are calculated by weight: 40 parts of mullite, 30 parts of b...

Embodiment 2

[0028] A method for preparing a high-strength mullite castable, comprising the following steps:

[0029] a. Put mullite, brown corundum, and zirconium materials into a crusher for crushing. After being crushed into granules, put the granules into a mixer and add water for stirring. The stirring time is 5 minutes to obtain mixed granules A;

[0030] b Put the SiO2 micropowder, heat-resistant steel fiber, and nano-barite powder into a ball mill and mix for 30 minutes to make it mix evenly and fully to obtain the mixture B;

[0031] c. Put the mixed particle A and the mixed material B into a vacuum mixer, add the binder and water, and stir for 40 minutes under vacuum conditions to obtain the mixed material C;

[0032] d Pour the mixture C into a clean fixed mould, use a vibrating rod to vibrate and shape in layers, and wait until the surface is flooded, and the product is ready;

[0033] The above raw materials are calculated by weight: 46 parts of mullite, 25 parts of brown cor...

Embodiment 3

[0038] A method for preparing a high-strength mullite castable, comprising the following steps:

[0039] a. Put mullite, brown corundum, and zirconium materials into a crusher for crushing. After being crushed into granules, put the granules into a mixer and add water for stirring. The stirring time is 8 minutes to obtain mixed granules A;

[0040] b Put the SiO2 micropowder, heat-resistant steel fiber, and nano-barite powder into a ball mill and mix them for 24 minutes to make them mix evenly and fully to obtain the mixture B;

[0041] c. Put the mixed particle A and the mixed material B into the vacuum mixer, add the binder and water, and stir for 45 minutes under vacuum conditions to obtain the mixed material C;

[0042] d Pour the mixture C into a clean fixed mould, use a vibrating rod to vibrate and shape in layers, and wait until the surface is flooded, and the product is ready;

[0043] The above raw materials are calculated by weight: 50 parts of mullite, 20 parts of ...

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PUM

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Abstract

The invention provides a method for preparing a high-strength mullite castable, which includes the following steps: a. put mullite, brown corundum, and zirconium materials into a crusher for crushing, and after being crushed into particles, put the particles into a mixer Add water and stir to obtain mixed particle A; b put SiO2 micropowder, heat-resistant steel fiber, and nano-barite powder into a ball mill and mix them to make them mix uniformly and fully to obtain mixed material B; c mix mixed particle A and mixed material B put into a vacuum mixer, add binder and water, and stir under vacuum conditions to obtain a mixture C; d inject the mixture C into a clean fixed mold, and use a vibrating rod to vibrate in layers to form, that is. The invention is easy to operate, scientific and reasonable, and can effectively improve the fineness of the mullite pouring material, thereby improving the quality of the pouring material.

Description

technical field [0001] The invention relates to the field of refractory material processing, in particular to a method for preparing high-strength mullite castables. technical background [0002] Today, when traditional energy sources are increasingly depleted and new energy sources are developing slowly, the most urgent task at present is to develop lining materials that are lightweight, high-strength, good thermal shock stability, and high operating temperature to meet the needs of lightweight structures. Mullite has excellent high temperature properties and mechanical strength, so it is widely used in many industrial fields such as metallurgy, machinery, chemical industry, electronics, aviation and national defense. The strength and stability of mullite materials currently on the market do not meet the needs of actual production, which has brought a certain impact on the subsequent production process. Contents of the invention [0003] The technical problem to be solve...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/185C04B35/63C04B35/76
CPCC04B35/66C04B35/185C04B35/6306C04B35/76C04B2235/3215C04B2235/3217C04B2235/3244C04B2235/3418C04B2235/448
Inventor 蒋明学
Owner 成都市丹炉高温科技有限责任公司
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