CN109354485A - A kind of fixed structure of ceramic nozzle and the preparation method of ceramic nozzle - Google Patents
A kind of fixed structure of ceramic nozzle and the preparation method of ceramic nozzle Download PDFInfo
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- CN109354485A CN109354485A CN201811330297.2A CN201811330297A CN109354485A CN 109354485 A CN109354485 A CN 109354485A CN 201811330297 A CN201811330297 A CN 201811330297A CN 109354485 A CN109354485 A CN 109354485A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 230000007704 transition Effects 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052878 cordierite Inorganic materials 0.000 claims description 8
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012188 paraffin wax Substances 0.000 claims description 8
- 238000004512 die casting Methods 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 239000010431 corundum Substances 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 239000012615 aggregate Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229910001570 bauxite Inorganic materials 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052863 mullite Inorganic materials 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000007582 slurry-cast process Methods 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 235000012222 talc Nutrition 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000005120 petroleum cracking Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 150000003384 small molecules Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- 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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- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
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- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of fixed structure of ceramic nozzle and the preparation method of ceramic nozzle, it is related to the technical field of oily cat-cracker, including ceramic nozzle and metal sleeve, metal sleeve is equipped in the outside of ceramic nozzle, the bottom of metal sleeve is welded on main pipeline, the upper end diameter of bore of ceramic nozzle is less than the diameter of bore of lower end, the round platform hole of transition connection is equipped between upper end inner hole and lower end inner hole, the upper end of ceramic nozzle is fixed by the step surface of metal sleeve upper end, on the upper surface that the upper end of metal sleeve is equipped with that the step surface to extend internally is connected to ceramic nozzle, and do not block the upper end inner hole of ceramic nozzle；The present invention has high hardness, erosion resisting and wearability preferable, while increasing nozzle service life, substantially prolongs the time between overhauls(TBO) of cracker by using ceramic nozzle resistant to high temperature.
Description
Technical field
The present invention relates to the technical fields of oily cat-cracker, more particularly, to a kind of petroleum cat-cracker
The fixed structure of ceramic nozzle and the preparation method of ceramic nozzle.
Background technique
Well known, petroleum cracking is an important link during crude oil to be processed into various product oils, specifically
It is exactly the product oil by the crude oil pyrolysis of macromolecular chain at various small molecule chains；Petroleum cracking process mainly passes through heating and urges
Change process is come what is completed, and therefore, various catalyst become the important substance in petroleum cracking process；However, catalyst is sprayed
Enter into cracker, at present mostly using the higher antifriction alloy nozzle of hardness, although these antifriction alloy nozzle energy
Enough meet requirement, but due to being limited by its hardness and wear-resisting property, the service life of antifriction alloy nozzle is relatively short,
This makes the time between overhauls(TBO) of its cracker relatively short；In view of the hardness and wearability of ceramics will than any antifriction alloy
Many times are higher by, it is therefore proposed that a kind of hardness is high, wearability is good, can increase nozzle service life, the maintenance for extending cracker
The ceramic nozzle in period becomes the basic demand of those skilled in the art.
Summary of the invention
In order to overcome the shortcomings in the background art, the invention discloses a kind of fixed structure of ceramic nozzle and ceramic nozzles
Preparation method realize and improve high temperature resistance, corrosion-resistant property and wear resistance by the ceramic nozzle of preparation, extend
The purpose of cracker time between overhauls(TBO).
In order to realize the goal of the invention, the present invention adopts the following technical scheme:
A kind of fixed structure of ceramic nozzle, including ceramic nozzle and metal sleeve are equipped with metallic sheath in the outside of ceramic nozzle
Pipe, the bottom of metal sleeve are welded on main pipeline, and the upper end diameter of bore of ceramic nozzle is less than the diameter of bore of lower end, on
The round platform hole that transition connection is equipped between inner hole and lower end inner hole is held, the upper end of ceramic nozzle passes through the step of metal sleeve upper end
Face is fixed, and on the upper surface that the upper end of metal sleeve is equipped with that the step surface to extend internally is connected to ceramic nozzle, and is not blocked
The upper end inner hole of ceramic nozzle.
The top of the fixed structure of the ceramic nozzle, ceramic nozzle passes through the annular groove and metallic sheath on periphery
Becket on the inner face of pipe top is fixedly connected.
The fixed structure of the ceramic nozzle, the welding metal rings are on the inner face of metal sleeve top.
The fixed structure of the ceramic nozzle, ceramic nozzle are ceramic tube.
The fixed structure of the ceramic nozzle has weldering in lower part periphery and the junction with main pipeline of metal sleeve
Contact.
A kind of preparation method of ceramic nozzle, including ceramic nozzle resistant to high temperature, specific preparation process is as follows:
(1), raw material proportioning:
Including dividing aggregate, powder and additive, each raw material is by weight percentage are as follows: aggregate: powder: additive=60~70: 30~
40: 4~10；
(2), forming method: above-mentioned raw materials are uniformly mixed in batch mixer, become mixture；Mixture is poured by mud respectively
Note method, machinery pressure preparation method, hot die-casting method are fabricated to green body, specific various forming method following steps:
A) slurry casting method: adding water 20 ~ 25% that slurry cast is made into metal die or rubber membrane above-mentioned mixture, to solidifying
It is demoulded after Gu and dries the green body after demoulding；
B) machinery pressure preparation method: the water that weight is mixture 2 ~ 3% is added in above-mentioned mixture, is added to metal after mixing
In mold, it is pressed into green body through mechanical pressurization, is dried after green body is demoulded；
C) hot die-casting method: above-mentioned mixture is added in the vasoliniment of fusing and is stirred evenly, then is pressed by pressure
Into metal die, green body is formed after paraffin, is embedded in ceramic powder and heats after green body is demoulded, and excludes base
Paraffin in body；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1300 DEG C~1500
DEG C, keep the temperature 2~6 hours.
The preparation method of the ceramic nozzle, the aggregate in step 1 are bauxite grains, corundum in granules, mullite
Grain, any of them in cordierite particle or two kinds of combinations.
The preparation method of the ceramic nozzle, powder are any one of clay powder, active oxidation aluminium powder, cordierite powder
Or two kinds of combinations.
The preparation method of the ceramic nozzle, additive are calgon, aluminous cement, wooden calcium sulfonate, cunning
Any one in stone or two kinds of combinations.
By adopting the above-described technical solution, the invention has the following beneficial effects:
The fixed structure of ceramic nozzle of the present invention and the preparation method of ceramic nozzle are sprayed by using ceramics resistant to high temperature
Mouth has high hardness, erosion resisting and wearability preferable, while increasing nozzle service life, substantially prolongs cracking dress
The time between overhauls(TBO) set.
Detailed description of the invention
Fig. 1 is the ceramic nozzle of the invention structural schematic diagram fixed by step surface and metal sleeve；
Fig. 2 is the ceramic nozzle of the invention structural schematic diagram fixed by groove and metal sleeve；
In figure: 1, ceramic nozzle；2, metal sleeve；3, main pipeline；4, pad.
Specific embodiment
By the following examples can the detailed explanation present invention, the open purpose of the present invention is intended to protect model of the present invention
Enclose all interior technological improvements.
In conjunction with the fixed structure of attached drawing 1-2 ceramic nozzle, including ceramic nozzle 1 and metal sleeve 2, in ceramic nozzle 1
Outside is equipped with metal sleeve 2, and the bottom of metal sleeve 2 is welded on main pipeline 3, and the upper end diameter of bore of ceramic nozzle 1 is small
Diameter of bore in lower end, is equipped with the round platform hole of transition connection between upper end inner hole and lower end inner hole, the upper end of ceramic nozzle 1 is logical
The step surface for crossing 2 upper end of metal sleeve is fixed, and is equipped with the step surface to extend internally in the upper end of metal sleeve 2 and is connected to ceramic spray
On the upper surface of mouth 1, and the upper end inner hole of ceramic nozzle 1 is not blocked.
The top of the fixed structure of the ceramic nozzle, ceramic nozzle 1 passes through the annular groove and metal on periphery
Becket on 2 top inner face of casing is fixedly connected.
The fixed structure of the ceramic nozzle, the welding metal rings are on 2 top inner face of metal sleeve.
The fixed structure of the ceramic nozzle, ceramic nozzle 1 are ceramic tube.
The fixed structure of the ceramic nozzle has in lower part periphery and the junction with main pipeline 3 of metal sleeve 2
Pad 4.
A kind of preparation method of ceramic nozzle, including ceramic nozzle resistant to high temperature 1, specific preparation process is as follows:
(1), raw material proportioning:
Including dividing aggregate, powder and additive, each raw material is by weight percentage are as follows: aggregate: powder: additive=60~70: 30~
40: 4~10；
(2), forming method: above-mentioned raw materials are uniformly mixed in batch mixer, become mixture；Mixture is poured by mud respectively
Note method, machinery pressure preparation method, hot die-casting method are fabricated to green body, specific various forming method following steps:
A) slurry casting method: adding water 20 ~ 25% that slurry cast is made into metal die or rubber membrane above-mentioned mixture, to solidifying
It is demoulded after Gu and dries the green body after demoulding；
B) machinery pressure preparation method: the water that weight is mixture 2 ~ 3% is added in above-mentioned mixture, is added to metal after mixing
In mold, it is pressed into green body through mechanical pressurization, is dried after green body is demoulded；
C) hot die-casting method: above-mentioned mixture is added in the vasoliniment of fusing and is stirred evenly, then is pressed by pressure
Into metal die, green body is formed after paraffin, is embedded in ceramic powder and heats after green body is demoulded, and excludes base
Paraffin in body；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1300 DEG C~1500
DEG C, keep the temperature 2~6 hours.
The preparation method of the ceramic nozzle, the aggregate in step 1 are bauxite grains, corundum in granules, mullite
Grain, any of them in cordierite particle or two kinds of combinations.
The preparation method of the ceramic nozzle, powder are any one of clay powder, active oxidation aluminium powder, cordierite powder
Or two kinds of combinations.
The preparation method of the ceramic nozzle, additive are calgon, aluminous cement, wooden calcium sulfonate, cunning
Any one in stone or two kinds of combinations.
The preparation method of the ceramic nozzle, the dosage of the bonding agent and water that are added in the forming method of step (2)
It is the percentage of mixture weight.
Embodiment 1
The upper end of the fixed structure of ceramic nozzle of the present invention, ceramic nozzle 1 is solid by the step surface of 2 upper end of metal sleeve
It is fixed；
The preparation method of ceramic nozzle of the present invention, specific preparation process is as follows:
(1) raw material proportioning: aggregate: powder: additive=70: 30: 10；Aggregate is that bauxite grains and two kinds of corundum in granules combine,
Powder is clay powder and two kinds of active oxidation aluminium powder combinations, and additive is calgon and two kinds of aluminous cement combinations；
(2) forming method: above-mentioned raw materials being uniformly mixed in batch mixer, become mixture,
It is formed using slurry casting method, i.e., adds 20% water that slurry cast is made into metal die above-mentioned mixture, it is to be solidified
It demoulds afterwards and dries the green body after demoulding；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1450 DEG C, and heat preservation 4 is small
When.
Embodiment 2
The upper end of the fixed structure of ceramic nozzle of the present invention, ceramic nozzle 1 is solid by the step surface of 2 upper end of metal sleeve
It is fixed；
The preparation method of ceramic nozzle of the present invention, specific preparation process is as follows:
(1) raw material proportioning: aggregate: powder: additive=60: 40: 6；Aggregate is that corundum in granules and two kinds of mullite particle combine,
Powder is active oxidation aluminium powder and two kinds of cordierite powder combinations, and additive is two kinds of groups of pure calcium aluminate cement and wooden calcium sulfonate
It closes；
(2) mechanical compression molding method is used, add 2% water outside in above-mentioned mixture and is added to metal mold after mixing
In tool, it is pressed into green body through mechanical pressurization, is dried after green body is demoulded；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1500 DEG C, and heat preservation 2 is small
When.
Embodiment 3
The top of the fixed structure of ceramic nozzle of the present invention, ceramic nozzle 1 passes through the annular groove and gold on periphery
The becket belonged on 2 top inner face of casing is fixedly connected；
The preparation method of ceramic nozzle of the present invention, specific preparation process is as follows:
(1) raw material proportioning: aggregate: powder: additive=65: 35: 4；Aggregate is corundum in granules, and powder is cordierite powder, additive
For talcum；
(2) forming method: above-mentioned raw materials being uniformly mixed in batch mixer, become mixture, and
It is formed using hot die-casting method, above-mentioned mixture is added in the vasoliniment of fusing and is stirred evenly, then will by pressure
It is pressed into metal die, and green body is formed after paraffin, is embedded in ceramic powder and heats after green body is demoulded,
Exclude the paraffin in green body；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1300 DEG C, and heat preservation 6 is small
When.
Ceramic nozzle prepared by the invention patent has extraordinary high temperature resistance, corrosion-resistant property and wear resistance
Can, service life 2 times or more higher than antifriction alloy, so that the time between overhauls(TBO) of cracker extends 2 times or more.
Part not in the detailed description of the invention is the prior art.
The embodiment selected herein to disclose goal of the invention of the invention, is presently considered to be suitable, still,
It is to be understood that the present invention is intended to include all changes and improvement that all belong to the embodiment in this design and invention scope.
Claims (9)
1. a kind of fixed structure of ceramic nozzle, including ceramic nozzle and metal sleeve, it is characterized in that: in the outside of ceramic nozzle
Equipped with metal sleeve, the bottom of metal sleeve is welded on main pipeline, and the upper end diameter of bore of ceramic nozzle is less than lower end
Diameter of bore is equipped with the round platform hole of transition connection between upper end inner hole and lower end inner hole, the upper end of ceramic nozzle passes through metallic sheath
The step surface of pipe upper end is fixed, and is equipped with the upper surface that the step surface to extend internally is connected to ceramic nozzle in the upper end of metal sleeve
On, and the upper end inner hole of ceramic nozzle is not blocked.
2. the fixed structure of ceramic nozzle according to claim 1, it is characterized in that: the top of ceramic nozzle passes through periphery
On annular groove be fixedly connected with the becket on the inner face of metal sleeve top.
3. the fixed structure of ceramic nozzle according to claim 1, it is characterized in that: the welding metal rings are in metal sleeve
On the inner face of top.
4. the fixed structure of ceramic nozzle according to claim 1, it is characterized in that: ceramic nozzle is ceramic tube.
5. the fixed structure of ceramic nozzle according to claim 1, it is characterized in that: metal sleeve lower part periphery with
There is pad with the junction of main pipeline.
6. according to claim 1 in -5 ceramic nozzle described in any claim preparation method, it is characterized in that: including resistance to height
The ceramic nozzle of temperature, specific preparation process is as follows:
(1), raw material proportioning:
Including dividing aggregate, powder and additive, each raw material is by weight percentage are as follows: aggregate: powder: additive=60~70: 30~
40: 4~10；
(2), forming method: above-mentioned raw materials are uniformly mixed in batch mixer, become mixture；Mixture is poured by mud respectively
Note method, machinery pressure preparation method, hot die-casting method are fabricated to green body, specific various forming method following steps:
A) slurry casting method: adding water 20 ~ 25% that slurry cast is made into metal die or rubber membrane above-mentioned mixture, to solidifying
It is demoulded after Gu and dries the green body after demoulding；
B) machinery pressure preparation method: the water that weight is mixture 2 ~ 3% is added in above-mentioned mixture, is added to metal after mixing
In mold, it is pressed into green body through mechanical pressurization, is dried after green body is demoulded；
C) hot die-casting method: above-mentioned mixture is added in the vasoliniment of fusing and is stirred evenly, then is pressed by pressure
Into metal die, green body is formed after paraffin, is embedded in ceramic powder and heats after green body is demoulded, and excludes base
Paraffin in body；
(3) high temperature firing: green body after molding being put into high temperature kiln and is sintered, and sintering temperature is 1300 DEG C~1500
DEG C, keep the temperature 2~6 hours.
7. the preparation method of ceramic nozzle according to claim 6, it is characterized in that: the aggregate in step 1 is bauxite
Grain, corundum in granules, mullite particle, any of them in cordierite particle or two kinds of combinations.
8. the preparation method of ceramic nozzle according to claim 6, it is characterized in that: powder is clay powder, activated alumina
The combination of any one or two kinds of powder, cordierite powder.
9. the preparation method of ceramic nozzle according to claim 6, it is characterized in that: additive is calgon, aluminic acid
Calcium cement, wooden calcium sulfonate, any one or two kinds of combinations in talcum.
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