CN104944930A - Refractory sagger and preparation method thereof - Google Patents
Refractory sagger and preparation method thereof Download PDFInfo
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- CN104944930A CN104944930A CN201510318264.6A CN201510318264A CN104944930A CN 104944930 A CN104944930 A CN 104944930A CN 201510318264 A CN201510318264 A CN 201510318264A CN 104944930 A CN104944930 A CN 104944930A
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Abstract
The invention discloses a refractory sagger and a preparation method thereof, and belongs to the technical field of refractories. The refractory sagger is prepared from the following raw materials in parts by weight: 25-35 parts of 30# white corundum, 20-30 parts of 150# white corundum, 15-20 parts of alumina powder and 15-25 parts of kaolin. The refractory sagger formula is simplified, the production cost is accordingly reduced, and sintering carriers available for multiple fields are prepared through the simplified formula, an uncomplicated process and a reasonable matching ratio. The refractory sagger provided by the invention can resist a temperature of 1450 DEG C and can be used repeatedly for more than 90 times or above; in addition, ceramic products have certain stability when being sintered in the sagger, and the white corundum of the ceramic products is not liable to fall off, so that the service life of the sagger is prolonged.
Description
Technical field
The invention belongs to fire resisting material field, be specifically related to a kind of fire resistant sagger and preparation method thereof.
Background technology
Ceramic, fire-resistant industry holds firing tool---saggar, adopts compacting, molded uncovered rectangle or rectangle usually, and the one-piece construction such as circular, oval, namely by refractory materials repressed or molded and shaped after, form through sintering.Use saggar firing ceramics device, not only can improve dress burning amount, the unlikely bonding of goods, improve yield rate, and saggar also has certain thermal conductivity and thermostability, can ensure ceramic mass, the formula of traditional saggar is loaded down with trivial details, complex manufacturing technology.
Summary of the invention
The object of the present invention is 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 weight part: 30# white fused alumina 25-35 part, 150# white fused alumina 20-30 part, aluminum oxide powder 15-20 part and kaolin 15-25 part.
The preparation method of described fire resistant sagger, comprises the steps:
(1) take above-mentioned raw materials in proportion, with raw material total weight, add polyvinyl alcohol and the carboxymethyl cellulose mixed aqueous solution of 10 ~ 15%, stir 1 ~ 2h;
(2) 15 ~ 30 mesh sieves are crossed, old at least 24 hours;
(3) added by material in grinding tool and suppress 3-5s at 8-10MPa, the product suppressed, indoor placement at least 24 hours, is dried, then at 1550-1600 DEG C of sintering 2-3h, naturally cooling.
Further, in described step (1), the preparation method of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution is: carboxymethyl cellulose and 50 DEG C of warm water mix by the mass ratio of 1:10 by (a), stir evenly rear placement 48h; B the mass ratio mixing of 1:10 pressed by polyvinyl alcohol and 80 DEG C of warm water by (), and 80 DEG C of heating 24 hours, be cooled to room temperature; (c) by step (a) gains and step (b) gains by volume 1 ︰ 1 mix and get final product.
Dry in described step (3) be 60 ~ 80 DEG C of laser heatings to moisture below 1%.
The present invention simplifies the formula of fire resistant sagger, reduces production cost simultaneously.By this simple formula and uncomplicated technique, adopt rational proportion to make and multi-fieldly spendablely burn till carrier.Fire resistant sagger of the present invention can heatproof 1450 DEG C, and can Reusability more than 90 times.And ceramic has certain stability, the white fused alumina grain also difficult drop-off of its ceramic when burning till in this saggar, thus extend the work-ing life of saggar.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited thereto.
Embodiment 1
A kind of fire resistant sagger, raw material is: 30# white fused alumina 25kg, 150# white fused alumina 20kg, aluminum oxide powder 15kg and kaolin 15kg.
The preparation method of above-mentioned fire resistant sagger: the preparation of (1) polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution: carboxymethyl cellulose and 50 DEG C of warm water are pressed the mass ratio mixing of 1:10 by (a), stir evenly rear placement 48h; B the mass ratio mixing of 1:10 pressed by polyvinyl alcohol and 80 DEG C of warm water by (), and 80 DEG C of heating 24 hours, be cooled to room temperature; (c) by step (a) gains and step (b) gains by volume 1 ︰ 1 mix and get final product.
(2) take above-mentioned raw materials in proportion, with raw material total weight, add polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) mixed aqueous solution of 10%, in vertebra formula stirrer, stir 1h;
(3) cross 15 mesh sieves, put into vault or old 24 hours of closed room;
(4) added by material in grinding tool and suppress 3s at 10MPa, the product suppressed, indoor placement 24 hours, is dried to moisture below 1%, then sinters 2.5 hours at 1580 DEG C, naturally cooling.The fire resistant sagger prepared of present 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 alumina 25kg, aluminum oxide powder 20kg and kaolin 20kg.
The preparation method of above-mentioned fire resistant sagger: the preparation of (1) polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution: carboxymethyl cellulose and 50 DEG C of warm water are pressed the mass ratio mixing of 1:10 by (a), stir evenly rear placement 48h; B the mass ratio mixing of 1:10 pressed by polyvinyl alcohol and 80 DEG C of warm water by (), and 80 DEG C of heating 24 hours, be cooled to room temperature; (c) by step (a) gains and step (b) gains by volume 1 ︰ 1 mix and get final product.
(2) take above-mentioned raw materials in proportion, with raw material total weight, add polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) mixed aqueous solution of 15%, in vertebra formula stirrer, stir 1.5h;
(3) cross 20 mesh sieves, put into vault or old 24 hours of closed room;
(4) material is added pressing pressure in grinding tool and carry out compacting 5s at 8MPa, the product suppressed, indoor placement 24 hours, is dried to moisture below 1%, then sinters 2 hours at 1600 DEG C, naturally cooling.The fire resistant sagger prepared of present method can heatproof 1450 DEG C, 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 alumina 30kg, aluminum oxide powder 20kg and kaolin 25kg.
The preparation method of above-mentioned fire resistant sagger: the preparation of (1) polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution: carboxymethyl cellulose and 50 DEG C of warm water are pressed the mass ratio mixing of 1:10 by (a), stir evenly rear placement 48h; B the mass ratio mixing of 1:10 pressed by polyvinyl alcohol and 80 DEG C of warm water by (), and 80 DEG C of heating 24 hours, be cooled to room temperature; (c) by step (a) gains and step (b) gains by volume 1 ︰ 1 mix and get final product.
(2) take above-mentioned raw materials in proportion, with raw material total weight, add polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) mixed aqueous solution of 15%, in vertebra formula stirrer, stir 2h;
(3) cross 30 mesh sieves, put into vault or old 24 hours of closed room;
(4) added by material in grinding tool and suppress 4s at 9MPa, the product suppressed, indoor placement 24 hours, is dried to moisture below 1%, then sinters 3 hours at 1550 DEG C, naturally cooling.The fire resistant sagger prepared of present method can heatproof 1450 DEG C, and can Reusability more than 90 times.
Claims (4)
1. a fire resistant sagger, is characterized in that, is made up of the raw material of following weight part: 30# white fused alumina 25-35 part, 150# white fused alumina 20-30 part, aluminum oxide powder 15-20 part and kaolin 15-25 part.
2. the preparation method of claim 1 fire resistant sagger, is characterized in that, comprises the steps:
(1) take above-mentioned raw materials in proportion, with raw material total weight, add polyvinyl alcohol and the carboxymethyl cellulose mixed aqueous solution of 10 ~ 15%, stir 1 ~ 2h;
(2) 15 ~ 30 mesh sieves are crossed, old at least 24 hours;
(3) added by material in grinding tool and suppress 3-5s at 8-10MPa, the product suppressed, indoor placement at least 24 hours, is dried, then at 1550-1600 DEG C of sintering 2-3h, naturally cooling.
3. the preparation method of fire resistant sagger according to claim 2, it is characterized in that, in described step (1), the preparation method of polyvinyl alcohol and carboxymethyl cellulose mixed aqueous solution is: carboxymethyl cellulose and 50 DEG C of warm water mix by the mass ratio of 1:10 by (a), stir evenly rear placement 48h; B the mass ratio mixing of 1:10 pressed by polyvinyl alcohol and 80 DEG C of warm water by (), and 80 DEG C of heating 24 hours, be cooled to room temperature; (c) by step (a) gains and step (b) gains by volume 1 ︰ 1 mix and get final product.
4. the preparation method of fire resistant sagger according to claim 2, is characterized in that, dry in described step (3) be 60 ~ 80 DEG C of laser heatings to moisture below 1%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN106588043A (en) * | 2016-11-29 | 2017-04-26 | 新化县名丰耐火材料有限公司 | Composite material for high-temperature-resistant high-heat-conductivity infrared radiation sagger and preparation method thereof |
| 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 |
| CN108046783A (en) * | 2017-12-12 | 2018-05-18 | 浙江大学 | Cordierite-corundum bollow ball saggar, preparation method and applications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103265301A (en) * | 2013-05-29 | 2013-08-28 | 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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Patent Citations (2)
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| CN103265301A (en) * | 2013-05-29 | 2013-08-28 | 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN106588043A (en) * | 2016-11-29 | 2017-04-26 | 新化县名丰耐火材料有限公司 | Composite material for high-temperature-resistant high-heat-conductivity infrared radiation sagger and preparation method thereof |
| 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 |
| CN108046783A (en) * | 2017-12-12 | 2018-05-18 | 浙江大学 | Cordierite-corundum bollow ball saggar, preparation method and applications |
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| CN104944930B (en) | 2017-09-01 |
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