CN109574640A - The preparation method of high-temperature corundum mullite crucible - Google Patents
The preparation method of high-temperature corundum mullite crucible Download PDFInfo
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- CN109574640A CN109574640A CN201910074197.6A CN201910074197A CN109574640A CN 109574640 A CN109574640 A CN 109574640A CN 201910074197 A CN201910074197 A CN 201910074197A CN 109574640 A CN109574640 A CN 109574640A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a kind of preparation methods of high-temperature corundum mullite crucible, belong to silicate crucible preparation field.The crucible includes the substance of following mass fraction: calcined oxide aluminium powder 10-50%；Aquamaine mountain flour 5-20%；Kaolin powder 20-40%；White fused alumina particle 5-30%.Preparation method provided by the invention, including 5 steps, scientific and reasonable, simple and easy, and be convenient for industrialized production, crucible obtained has a long service life, high temperature resistant, the features such as creep resistance is excellent.
Description
Technical field
The present invention relates to a kind of preparation methods of high-temperature corundum mullite crucible, belong to silicate crucible preparation field.
Background technique
The characteristic of corundum-mullite crucible, high temperature resistant, acid and alkali-resistance, resistance to chilling are very hot, resistant to chemical etching；Thermal conductivity is big, heat
Expansion rate is small, with air, vapor, hydrogen, the Fails To Responds such as carbon monoxide.Temperature of thermal field variation less in the case where can be with
It is used for a long time, 1650 DEG C of short-term maximum operation (service) temperature.
Mullite crystal is a kind of good refractory raw material, is applied to the industries such as ceramics, metallurgy, casting, electronics, is had resistance to
The features such as high temperature, intensity high thermal conductivity coefficient are small, and energy-saving effect is significant is suitable for petroleum cracking furnace, metallurgical hot-blast stove, ceramic roller
Kiln, tunnel oven, electroceramics shuttle kiln, removing appts. of glass crucible and various electric furnaces liner, flame can be directly contacted, by corundum and mullite
The performance of product can be improved in mixing.
Currently marketed corundum-mullite crucible, product service life is short, using the production method of traditional refractory material
It produces, product is coarse, and thermal shock resistance is bad, creep resistance is poor, and product quality fluctuation is big.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of preparation sides of high-temperature corundum mullite crucible
Method, scientific and reasonable, simple and easy, crucible obtained has long service life, high temperature resistant, the features such as creep resistance is excellent.
High-temperature corundum mullite crucible of the present invention, the substance including following mass fraction:
The partial size of the calcined oxide aluminium powder, aquamaine mountain flour and kaolin powder is all 0.5 μm of -0.5mm.
The partial size of the white fused alumina particle is 100-18 mesh.
The preparation method of high-temperature corundum mullite crucible of the present invention produces earthenware using the production technology of ceramics
Crucible, comprising the following steps:
1) calcined oxide aluminium powder, aquamaine mountain flour, kaolin powder and white fused alumina particle example in mass ratio are put into ball mill
Wet blend-milling forms mud；
2) in the ball mill after wet grinding, then wet process is carried out except iron, by ground mud, by by several to tens
The channel of the high-strength bar magnet composition of item；
3) filters pressing is carried out to except the mud after iron using mud press, forms mud cake, for use；
4) mud cake obtained in step 3 and aggregate are added according to mass ratio into vacuum deairing machine and carry out multiple vacuum white silk
Mud；
5) that the pug after vacuum pugging is cut into green body is stand-by；
6) roll-forming is carried out to green body using roller pressing forming machine, forms semi-finished product, model used is plaster cast；
7) semi-finished product natural air drying enters in dry kiln from taking-up semi-finished product in model and is done after having sufficient intensity
It is dry；
8) calcining kiln is used, the semi-finished product after drying are obtained into finished product crucible after 1200-1600 DEG C of high temperature firing.
In the step 1, the Wet blend-milling time is 1-6 hours.
In the step 4, aggregate is one of white fused alumina particle, plate diamond spar particle or mullite particle or several
Kind.
In the step 4, the quality that aggregate is added is the 10-50% of mud cake weight.
The white fused alumina particle, plate diamond spar particle and mullite particle partial size are all 100-18 mesh.
In the step 4, the vacuum pugging time is 1-5h；In step 7, dry kiln drying temperature is 40-110 DEG C.
In the step 8, calcining kiln is one of combustion gas pushed bat kiln, shuttle kiln or electric pushed bat kiln.
In crucible, crystal phase is corundum phase and mullite phase, wherein corundum phase is 7-3:3-7 with mullite phase mass ratio.
Compared with prior art, the invention has the following beneficial effects:
1. long service life, service life can be by extending to 2-4 months less than 1 month originally；
2, it is resistant to 1300-1650 DEG C or more high temperature, while there is creep resistance；
3. preparation method provided by the present invention is scientific and reasonable, simple and easy, production efficiency is not only increased, but also just
In industrialized production.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 4 high temperature corundum-mullite crucible of the embodiment of the present invention；
In figure, 1- crucible crucible body；2- supporting leg；3- groove.
Specific embodiment
The present invention will be further explained with reference to the examples below.
Embodiment 1
Calcined oxide aluminium powder 40%；Mullite powder 15%；Aquamaine mountain flour 10%；Kaolin powder 20%；White fused alumina particle
15%.
The calcined oxide aluminium powder, mullite powder, aquamaine mountain flour and kaolin powder partial size be all 1-44 μm；White fused alumina
The partial size of particle is 50 mesh.
Embodiment 2
Calcined oxide aluminium powder 45%；Aquamaine mountain flour 10%；Kaolin powder 30%；White fused alumina particle 15%.
The calcined oxide aluminium powder, aquamaine mountain flour, kaolin powder partial size be all 20-60 μm；The grain of white fused alumina particle
Diameter is 18 mesh.
Embodiment 3
Calcined oxide aluminium powder 30%；Aquamaine mountain flour 10%；Kaolin powder 40%；White fused alumina particle 15%；Electroquartz
Grain 5%.
The calcined oxide aluminium powder, aquamaine mountain flour, kaolin powder and electroquartz particle partial size be all 15-50 μm；
The partial size of white fused alumina particle is 100 mesh.
Embodiment 4
Calcined oxide aluminium powder 40%；Mullite powder 12%；Aquamaine mountain flour 15%；Kaolin powder 25%；White fused alumina particle
8%.
The calcined oxide aluminium powder, mullite powder, aquamaine mountain flour and kaolin powder partial size be all 8-60 μm；White fused alumina
The partial size of particle is 80 mesh.
The preparation method of any high-temperature corundum mullite crucible of above-described embodiment 1~4, comprising the following steps:
1) each raw material example in mass ratio is put into Wet blend-milling in ball mill, forms mud；
2) in the ball mill after wet grinding, then wet process is carried out except iron, by ground mud, by by several to tens
The channel of the high-strength bar magnet composition of item；
3) filters pressing is carried out to except the mud after iron using mud press, forms mud cake, for use；
4) mud cake obtained in step 3 and aggregate are added according to mass ratio into vacuum deairing machine and carry out multiple vacuum white silk
Mud；
5) that the pug after vacuum pugging is cut into green body is stand-by；
6) roll-forming is carried out to green body using roller pressing forming machine, forms semi-finished product, model used is plaster cast；
7) semi-finished product natural air drying enters in dry kiln from taking-up semi-finished product in model and carries out after having enough intensity
It is dry；
8) calcining kiln is used, the semi-finished product after drying are obtained into finished product crucible after 1200-1600 DEG C of high temperature firing.
Embodiment 1-2, in step 1, the Wet blend-milling time is 2 hours；In step 4, aggregate is white fused alumina particle, plate is rigid
The mixture of beautiful particle；In step 4, the quality that aggregate is added is the 20% of mud cake quality；White fused alumina particle and plate diamond spar
The partial size of grain is all 100 mesh；The vacuum pugging time is 2h, and vacuum pugging number is 4 times；In step 7, dry kiln drying temperature is
60℃；Calcining kiln is combustion gas pushed bat kiln.
In embodiment 3-4, in step 1, the Wet blend-milling time is 3 hours, in step 4, and aggregate is white fused alumina particle, plate
In step 4,30% that aggregate quality is mud cake quality is added in the mixture of corundum in granules and mullite particle；White fused alumina particle,
Plate diamond spar particle and mullite particle partial size are all 50 mesh, and the vacuum pugging time is 4h, and vacuum pugging number is 3 times, step 7
In, dry kiln temperature is 70 DEG C；Calcining kiln is shuttle kiln.
The external diameter of high-temperature corundum mullite crucible crucible obtained is 152 ± 5mm, and crucible crucible body wall thickness is 7 ± 5mm, crucible body
Height is 85 ± 5mm, and crucible body bottom thickness is 7 ± 3mm；Height of landing leg is 3-5mm, and recess width is 20 ± 5mm.
The performance test of bulk density, thermal expansion coefficient and thermal shock resistance, test are carried out to crucible product in embodiment 1-4
The results are shown in Table 1.
1 embodiment 1-4 properties of product test result of table
Claims (6)
1. a kind of preparation method of high-temperature corundum mullite crucible, it is characterised in that: the following steps are included:
1) calcined oxide aluminium powder, aquamaine mountain flour, kaolin powder and white fused alumina particle example in mass ratio are put into ball mill and are mixed
Wet-milling forms mud；
2) filters pressing is carried out to mud using mud press, forms mud cake, for use；
3) mud cake obtained in step 2 and aggregate are added according to mass ratio into vacuum deairing machine and carry out vacuum pugging；
4) roll-forming is carried out to the material after vacuum pugging in step 3 using roller pressing forming machine, forms semi-finished product, model used
For plaster cast；
5) calcining kiln is used, semi-finished product are obtained to finished product crucible after 1200-1600 DEG C of high temperature firing.
2. the preparation method of high-temperature corundum mullite crucible according to claim 1, it is characterised in that: in step 1, mixing
The wet-milling time is 1-6 hours.
3. the preparation method of high-temperature corundum mullite crucible according to claim 1, it is characterised in that: in step 3, aggregate
For one or more of white fused alumina particle, plate diamond spar particle or mullite particle.
4. the preparation method of high-temperature corundum mullite crucible according to claim 3, it is characterised in that: in step 3, be added
The quality of aggregate is the 10-50% of mud cake weight；White fused alumina particle, plate diamond spar particle and mullite particle partial size are all 100-
18 mesh.
5. the preparation method of high-temperature corundum mullite crucible according to claim 1, it is characterised in that: in step 3, vacuum
The pugging time is 1-5h.
6. the preparation method of high-temperature corundum mullite crucible according to claim 1, it is characterised in that: in step 5, firing
Kiln is one of combustion gas pushed bat kiln, shuttle kiln or electric pushed bat kiln.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078484A (en) * | 2019-05-17 | 2019-08-02 | 山东工业职业学院 | A kind of corundum-mullite crucible and preparation method thereof |
| CN112094127A (en) * | 2020-09-25 | 2020-12-18 | 南阳开元高温新材料有限公司 | Manufacturing process of kyanite tailing series sagger |
| CN115093199A (en) * | 2022-06-30 | 2022-09-23 | 蒋波 | Special refractory crucible for negative electrode material carbonization and manufacturing process thereof |
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| EP2662347A1 (en) * | 2012-05-11 | 2013-11-13 | Imerys Kiln Furniture Hungary Ltd. | Ceramic compositions and supports for objects to be fired in a kiln or furnace |
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| CN103588487A (en) * | 2012-08-17 | 2014-02-19 | 佛山市南海金刚新材料有限公司 | Low-expansion ceramic roller, and preparation method thereof |
| CN103693975A (en) * | 2013-12-04 | 2014-04-02 | 长兴宏业高科高温耐火材料有限公司 | Ultrahigh strength thermal shock resistance corundum/mullite product and manufacture method thereof |
| CN106336197A (en) * | 2016-08-24 | 2017-01-18 | 王哲 | Saggar for sintering of electroceramic materials and preparation method thereof |
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2019
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| EP2662347A1 (en) * | 2012-05-11 | 2013-11-13 | Imerys Kiln Furniture Hungary Ltd. | Ceramic compositions and supports for objects to be fired in a kiln or furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078484A (en) * | 2019-05-17 | 2019-08-02 | 山东工业职业学院 | A kind of corundum-mullite crucible and preparation method thereof |
| CN110078484B (en) * | 2019-05-17 | 2021-10-29 | 山东工业职业学院 | Corundum-mullite crucible and preparation method thereof |
| CN112094127A (en) * | 2020-09-25 | 2020-12-18 | 南阳开元高温新材料有限公司 | Manufacturing process of kyanite tailing series sagger |
| CN115093199A (en) * | 2022-06-30 | 2022-09-23 | 蒋波 | Special refractory crucible for negative electrode material carbonization and manufacturing process thereof |
| CN115093199B (en) * | 2022-06-30 | 2023-12-22 | 青海天蓝新能源材料有限公司 | Special refractory crucible for carbonization of negative electrode material and manufacturing process thereof |
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