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Method for producing kiln furniture product of andalusite

A production method, technology of andalusite, applied in the field of production of andalusite kiln furniture products, to achieve high mechanical strength and use times, excellent thermal shock resistance

Inactive Publication Date: 2006-12-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no relevant report on the preparation of andalusite kiln furniture products with high performance, low cost and long life by using the mullite process of andalusite as the main raw material in the firing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, a kind of production method of andalusite kiln furniture products, by weight percent is 80% andalusite particle (<3mm), 5% corundum particle (<3mm), 5% mullite particle (<3mm) ), 5% aluminum micropowder (≤2μ) and 5% silicon micropowder (≤2μ) to form raw materials. Select silica sol with 4% of the total weight of raw materials as the binding agent; carry out the following steps in sequence:

[0017] 1), first mix the aluminum micropowder and silicon micropowder, and sieve, to obtain the powder material for use; the mixing ball milling and sieving steps here play the role of uniformly mixing the aluminum micropowder and silicon micropowder;

[0018] 2), dry-mixing andalusite particles, mullite particles and corundum particles, and then adding silica sol for mixing to obtain a mixture;

[0019] 3) Add powder to the mixture for kneading; after the material is trapped, it is pressed into shape, after drying, it is fired at a temperature of 1500°C to 1550°C for...

Embodiment 2

[0020] Embodiment 2, a kind of production method of andalusite kiln furniture products, by weight percent be 10% andalusite particle (<3mm), 35% corundum particle (<3mm), 40% mullite particle (<3mm) ), 10% aluminum micropowder (≤2μ) and 5% silicon micropowder (≤2μ) to form raw materials. Select silica sol with 4% of the total weight of raw materials as the binding agent; carry out the following steps in sequence:

[0021] 1), first mix the aluminum micropowder and silicon micropowder with ball milling and sieving to obtain the powder for use;

[0022] 2), dry-mixing andalusite particles, mullite particles and corundum particles, and then adding silica sol for mixing to obtain a mixture;

[0023] 3) Add powder to the mixture for kneading; after the material is trapped, it is pressed into shape, after drying, it is fired at a temperature of 1500°C to 1550°C for 8 to 20 hours to obtain andalusite kiln furniture products.

Embodiment 3

[0024] Embodiment 3, a kind of production method of andalusite kiln furniture products, by weight percentage be 30% andalusite particle (<3mm), the corundum particle (<3mm) of 15%, the mullite particle (<3mm) of 10% ), 30% aluminum micropowder (≤2μ) and 15% silicon micropowder (≤2μ) to form the raw materials. Select silica sol with 4% of the total weight of raw materials as the binding agent; carry out the following steps in sequence:

[0025] 1), first mix the aluminum micropowder and silicon micropowder with ball milling and sieving to obtain the powder for use;

[0026] 2), dry-mixing andalusite particles, mullite particles and corundum particles, and then adding silica sol for mixing to obtain a mixture;

[0027] 3) Add powder to the mixture for kneading; after the material is trapped, it is pressed into shape, after drying, it is fired at a temperature of 1500°C to 1550°C for 8 to 20 hours to obtain andalusite kiln furniture products.

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Abstract

This invention discloses a method for manufacturing andalusite kiln mold product from andalusite particles 10-80%, corundum particles 5-40%, mullite particles 5-40%, aluminum micropowders 5-30% and silicon micropowders 5-15%. Silicon sol 4% the weight of the raw materials is used as the binding agent. The method comprises: (1) mixing aluminum micropowders and silicon micropowders, and ball-milling; (2) dry-mixing andalusite particles, corundum particles and mullite particles, adding silicon sol, and mixing; (3) mixing the mixed powders obtained in step 1 with the mixture obtained in step 2, pressing for molding, drying, calcining at 1500-1550 deg.C for 8-20 h. The andalusite kiln mold product thus manufactured has such advantages as high strength, good heat shock resistance.

Description

technical field [0001] The invention relates to a production method of refractory materials, specifically, a production method of andalusite kiln furniture products. Background technique [0002] As a special refractory material that supports and protects fired products, the quality and performance of kiln furniture has a direct impact on the quality, output, energy consumption, and cost of fired products. Kiln furniture can be divided into push plate, shed plate, setter plate, sagger, etc. according to the position and application in the kiln. According to the chemical composition, it can be divided into oxide and non-oxide kiln furniture. Phase and multi-phase ceramic materials; kiln furniture has a wide variety and is widely used. [0003] The kilns for firing functional materials and devices such as magnetic materials and electronic insulating ceramics have extremely strict requirements on kiln furniture. The push plate and setter plate are the most critical kiln furni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/18C04B35/622
Inventor 郭兴忠杨辉程本军
Owner ZHEJIANG UNIV
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