CN104944930B - A kind of fire resistant sagger and preparation method thereof - Google Patents
A kind of fire resistant sagger and preparation method thereof Download PDFInfo
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- CN104944930B CN104944930B CN201510318264.6A CN201510318264A CN104944930B CN 104944930 B CN104944930 B CN 104944930B CN 201510318264 A CN201510318264 A CN 201510318264A CN 104944930 B CN104944930 B CN 104944930B
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Abstract
A kind of fire resistant sagger and preparation method thereof, belongs to technical field of refractory materials, is made up of the raw material of following parts by weight：15 25 parts of 25 35 parts of 30# white fused aluminas, 20 30 parts of 150# white fused aluminas, 15 20 parts of alumina powder and kaolin.The present invention simplifies the formula of fire resistant sagger, while reducing production cost.By this simple formula and uncomplicated technique, it is made of rational proportion and multi-field workable burns till carrier.The fire resistant sagger of the present invention can 1450 DEG C of heatproof, and can Reusability more than 90 times.And ceramic has certain stability when being burnt till in the saggar, the white fused alumina grain of its ceramic is not easy to come off, so as to extend the service life of saggar.
Description
Technical field
The invention belongs to fire resisting material field, and in particular to a kind of fire resistant sagger and preparation method thereof.
Background technology
Ceramics, fire resisting industry hold firing tool --- saggar, generally using compacting, the open rectangle of molding or rectangle, and
The overall structures such as circle, ellipse, i.e., it is repressed or after being molded by refractory material, it is sintered to form.Fired using saggar
Ware, can not only improve dress burning amount, product will not bond, improve yield rate, and saggar also have certain thermal conductivity with
Heat endurance, it is ensured that ceramic mass, the formula of traditional saggar is cumbersome, complex manufacturing technology.
The content of the invention
It is an object of the invention to provide a kind of fire resistant sagger and preparation method thereof.
Based on above-mentioned purpose, this invention takes following technical scheme：
A kind of fire resistant sagger, is made up of the raw material of following parts by weight：25-35 parts of 30# white fused aluminas, 150# white fused aluminas 20-30
15-25 parts of part, 15-20 parts of alumina powder and kaolin.
The preparation method of the fire resistant sagger, comprises the following steps：
（1）Above-mentioned raw materials are weighed in proportion, and in terms of raw material gross weight, polyvinyl alcohol and the carboxymethyl for adding 10~15% are fine
The plain mixed aqueous solution of dimension, stirs 1 ~ 2h；
（2）Cross 15 ~ 30 mesh sieves, old at least 24 hours；
（3）Material is added in 8-10MPa compacting 3-5s in grinding tool, the product suppressed is placed at least 24 hours indoors,
Drying, then sinter 2-3h, natural cooling at 1550-1600 DEG C.
Further, the step（1）The preparation method of middle polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution is：
（a）Carboxymethyl cellulose and 50 DEG C of warm water are pressed 1:10 mass ratio mixing, 48h is placed after stirring evenly；（b）By polyvinyl alcohol and 80
DEG C warm water presses 1:10 mass ratio mixing, and heated 24 hours at 80 DEG C, it is cooled to room temperature；（c）By step（a）Gains and step
Suddenly（b）Gains 1 ︰ 1 mixings by volume are produced.
The step（3）It is middle drying be 60 ~ 80 DEG C of laser heatings to moisture below 1%.
The present invention simplifies the formula of fire resistant sagger, while reducing production cost.By this simple formula and do not answer
Miscellaneous technique, is made of rational proportion and multi-field workable burns till carrier.The present invention fire resistant sagger can 1450 DEG C of heatproof,
And can Reusability more than 90 times.And ceramic has certain stability when being burnt till in the saggar, its ceramic it is white
Corundum grain is not easy to come off, so as to extend the service life of saggar.
Embodiment
Technical scheme is described in further detail below in conjunction with specific embodiment, but the protection model of the present invention
Enclose and be not limited thereto.
Embodiment 1
A kind of fire resistant sagger, raw material is：30# white fused alumina 25kg, 150# white fused aluminas 20kg, alumina powder 15kg and kaolin
15kg。
The preparation method of above-mentioned fire resistant sagger：（1）The preparation of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution：（a）
Carboxymethyl cellulose and 50 DEG C of warm water are pressed 1:10 mass ratio mixing, 48h is placed after stirring evenly；（b）By polyvinyl alcohol and 80 DEG C
Warm water presses 1:10 mass ratio mixing, and heated 24 hours at 80 DEG C, it is cooled to room temperature；（c）By step（a）Gains and step
（b）Gains 1 ︰ 1 mixings by volume are produced.
（2）Above-mentioned raw materials are weighed in proportion, in terms of raw material gross weight, add 10% polyvinyl alcohol（PVA）It is fine with carboxymethyl
Plain (CMC) mixed aqueous solution of dimension, 1h is stirred in vertebra formula mixer；
（3）15 mesh sieves are crossed, basement or old 24 hours of closed room is put into；
（4）Material is added in 10MPa compacting 3s in grinding tool, the product suppressed is placed 24 hours indoors, drying to water
Divide below 1%, then sintered 2.5 hours at 1580 DEG C, natural cooling.Fire resistant sagger prepared by this method can heatproof 1450
DEG C, and can Reusability more than 90 times.
Embodiment 2
A kind of fire resistant sagger, raw material is：30# white fused alumina 30kg, 150# white fused aluminas 25kg, alumina powder 20kg and kaolin
20kg。
The preparation method of above-mentioned fire resistant sagger：（1）The preparation of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution：（a）
Carboxymethyl cellulose and 50 DEG C of warm water are pressed 1:10 mass ratio mixing, 48h is placed after stirring evenly；（b）By polyvinyl alcohol and 80 DEG C
Warm water presses 1:10 mass ratio mixing, and heated 24 hours at 80 DEG C, it is cooled to room temperature；（c）By step（a）Gains and step
（b）Gains 1 ︰ 1 mixings by volume are produced.
（2）Above-mentioned raw materials are weighed in proportion, in terms of raw material gross weight, add 15% polyvinyl alcohol（PVA）It is fine with carboxymethyl
Plain (CMC) mixed aqueous solution of dimension, 1.5h is stirred in vertebra formula mixer；
（3）20 mesh sieves are crossed, basement or old 24 hours of closed room is put into；
（4）Material is added into pressing pressure in grinding tool and carries out compacting 5s in 8MPa, it is small that the product suppressed places 24 indoors
When, drying is sintered 2 hours to moisture below 1%, then at 1600 DEG C, natural cooling.Fire resistant sagger prepared by this method can
1450 DEG C of heatproof, and can Reusability more than 90 times.
Embodiment 3
A kind of fire resistant sagger, raw material is：30# white fused alumina 35kg, 150# white fused aluminas 30kg, alumina powder 20kg and kaolin
25kg。
The preparation method of above-mentioned fire resistant sagger：（1）The preparation of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution：（a）
Carboxymethyl cellulose and 50 DEG C of warm water are pressed 1:10 mass ratio mixing, 48h is placed after stirring evenly；（b）By polyvinyl alcohol and 80 DEG C
Warm water presses 1:10 mass ratio mixing, and heated 24 hours at 80 DEG C, it is cooled to room temperature；（c）By step（a）Gains and step
（b）Gains 1 ︰ 1 mixings by volume are produced.
（2）Above-mentioned raw materials are weighed in proportion, in terms of raw material gross weight, add 15% polyvinyl alcohol（PVA）It is fine with carboxymethyl
Plain (CMC) mixed aqueous solution of dimension, 2h is stirred in vertebra formula mixer；
（3）30 mesh sieves are crossed, basement or old 24 hours of closed room is put into；
（4）Material is added in 9MPa compacting 4s in grinding tool, the product suppressed is placed 24 hours indoors, drying to moisture
Sintered 3 hours below 1%, then at 1550 DEG C, natural cooling.This method prepare fire resistant sagger can 1450 DEG C of heatproof, and
Can Reusability more than 90 times.
Claims (1)
1. a kind of fire resistant sagger, it is characterised in that be made up of the raw material of following parts by weight：25-35 parts of 30# white fused aluminas, 150# are white
15-25 parts of 20-30 parts of corundum, 15-20 parts of alumina powder and kaolin, specific preparation process is as follows：
（1）Above-mentioned raw materials are weighed in proportion, in terms of raw material gross weight, add 10~15% polyvinyl alcohol and carboxymethyl cellulose
Mixed aqueous solution, stirs 1 ~ 2h；
（2）Cross 15 ~ 30 mesh sieves, old at least 24 hours；
（3）Material is added in grinding tool and to suppress 3-5s in 8-10MPa, the product suppressed place at least 24 hours indoors, 60 ~
80 DEG C of laser heatings sinter 2-3h, natural cooling to moisture below 1%, then at 1550-1600 DEG C；The step（1）In
The preparation method of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution is：（a）Carboxymethyl cellulose and 50 DEG C of warm water are pressed 1:
10 mass ratio mixing, 48h is placed after stirring evenly；（b）Polyvinyl alcohol and 80 DEG C of warm water are pressed 1:10 mass ratio mixing, and 80
DEG C heating 24 hours, be cooled to room temperature；（c）By step（a）Gains and step（b）Gains by volume 1:1 mixing is produced.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439571A (en) * | 2015-10-30 | 2016-03-30 | 长兴荣军耐火器材有限公司 | High corundum furnace tube |
| CN105439572A (en) * | 2015-10-30 | 2016-03-30 | 长兴荣军耐火器材有限公司 | High corundum furnace tube |
| CN105439570A (en) * | 2015-10-30 | 2016-03-30 | 长兴荣军耐火器材有限公司 | Preparation method for high corundum furnace tube |
| CN106630977A (en) * | 2016-11-29 | 2017-05-10 | 湖南省新化县长江电子有限责任公司 | Sintering sagger for electronic ceramics of new energy automobile and production method of sintering sagger |
| CN106588043B (en) * | 2016-11-29 | 2019-04-12 | 新化县名丰耐火材料有限公司 | A kind of high temperature resistance high heat conduction infra-red radiation saggar composite material and preparation method |
| CN108046783B (en) * | 2017-12-12 | 2020-10-16 | 浙江大学 | Cordierite-corundum hollow sphere sagger, preparation method and application thereof |
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| CN103265301B (en) * | 2013-05-29 | 2014-09-03 | 湖南华联特种陶瓷有限公司 | Fire-resistant case for annealing sapphire and production method thereof |
| CN103482993A (en) * | 2013-09-13 | 2014-01-01 | 湖南仁海科技材料发展有限公司 | Adamantine spar and mullite composite material sagger and method for manufacturing sagger |
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