CN110451939A - A kind of saggar and its manufacturing method - Google Patents
A kind of saggar and its manufacturing method Download PDFInfo
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- CN110451939A CN110451939A CN201910425884.8A CN201910425884A CN110451939A CN 110451939 A CN110451939 A CN 110451939A CN 201910425884 A CN201910425884 A CN 201910425884A CN 110451939 A CN110451939 A CN 110451939A
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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
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
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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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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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
- C04B2235/02—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
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
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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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- C04B2235/00—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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
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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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
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- C—CHEMISTRY; METALLURGY
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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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C—CHEMISTRY; METALLURGY
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- 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
Abstract
The invention discloses a kind of saggar and its manufacturing methods, it is mainly prepared by the raw material of following mass fraction meter: 8-10 parts of kaolin, 7-9 parts of talcum, 4-6 parts of aluminium oxide, 22-28 parts of 10 μm -40 μm of partial size of corundum, 45-58 parts of the corundum of partial size 0.1-0.8mm, 18-30 parts of mesh silicon carbide of partial size 300-500,8-15 parts of mullite and partial size are 8-16 parts of cordierite of 0.1-1mm, and wherein the mass percent of silica is 50% in kaolin, and the mass percent of aluminum oxide is 38%；The mass percent of silica is 55% in talcum, and the mass percent of magnesia is 35%；The variation and requirement of constituent of the invention, the effective anticorrosive and resistant to high temperature performance for improving saggar；The temperature reduction technology being added in processing step effectively improves its performance so that saggar internal structure is closer.
Description
Technical field
The present invention relates to Material Field, in particular to a kind of saggar and its manufacturing method.
Background technique
Currently, anode material of lithium battery is formed using saggar carrying material high-temperature calcination, generally carried using saggar
Lithium carbonate and metal oxide carry out pyroreaction, at high temperature basic anhydride lithia and acidic oxide in saggar surface layer
Certain chemical reaction occurs for silica, amphoteric oxide aluminum oxide, generates glassy substances, domestic and international saggar consumption
Average index be that positive electrode per ton consumes 200-300 kilograms, saggar passes through cold and hot reuse, generally uses 20-30 times
It will scrap.
The preparation yield rate of saggar is low at present, and the performance of saggar is poor.
Summary of the invention
Invention is designed to provide a kind of saggar and its manufacturing method, solves that yield rate is low and saggar performance difference
Problem.
The invention is realized in this way a kind of saggar and its manufacturing method, mainly by the raw material system of following mass fraction meter
It is standby to form:
8-10 parts of kaolin, 7-9 parts of talcum, 4-6 parts of aluminium oxide, 22-28 parts of 10 μm -40 μm of partial size of corundum, partial size
45-58 parts of the corundum of 0.1-0.8mm, 18-30 parts of mesh silicon carbide of partial size 300-500,8-15 parts of mullite and partial size are 0.1-
8-16 parts of the cordierite of 1mm, wherein the mass percent of silica is 50% in kaolin, the quality percentage of aluminum oxide
Than being 38%；The mass percent of silica is 55% in talcum, and the mass percent of magnesia is 35%.
A further technical solution of the present invention is: the manufacturing method of the saggar the following steps are included:
Add water uniform in stirrer for mixing each raw material of formula ratio, then addition bonding agent is uniformly mixed again obtains
Mixture, mixture are formed through mold, and institute can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Saggar is stated, room temperature is cooled to.
A further technical solution of the present invention is: the bonding agent is spent pulping liquor or polyvinyl alcohol or dextrin, the paper
The additional amount of pulp waste is 4%-10%, and the additional amount of the polyvinyl alcohol is 5-8%, and the additional amount of the dextrin is 5-
10%.
A further technical solution of the present invention is: mixture is using hydro-forming, punch forming, vibration is press-formed or oneself
Flow at least one of moulding by casting.
A further technical solution of the present invention is: the raw embryo after molding demoulds after placing 3-5 hours.
A further technical solution of the present invention is: it is 2-3h that the incorporation time that bonding agent mixes again, which is added,.
A further technical solution of the present invention is: the protective atmosphere in the sintering furnace is nitrogen or argon atmosphere.
A further technical solution of the present invention is: firing temperature be 1350-1500 DEG C, heating rate be 5-20 DEG C/
Min, soaking time 4-6h.
A further technical solution of the present invention is: the rate of temperature fall of the saggar after firing is 5-10 DEG C/min.
Beneficial effects of the present invention: the variation and requirement of constituent of the invention, the effective anti-corruption for improving saggar
Erosion and performance resistant to high temperature；The temperature reduction technology being added in processing step effectively mentions so that saggar internal structure is closer
Its high performance.
Specific embodiment
A kind of saggar and its manufacturing method, are mainly prepared by the raw material of following mass fraction meter:
8-10 parts of kaolin, 7-9 parts of talcum, 4-6 parts of aluminium oxide, 22-28 parts of 10 μm -40 μm of partial size of corundum, partial size
45-58 parts of the corundum of 0.1-0.8mm, 18-30 parts of mesh silicon carbide of partial size 300-500,8-15 parts of mullite and partial size are 0.1-
8-16 parts of the cordierite of 1mm, wherein the mass percent of silica is 50% in kaolin, the quality percentage of aluminum oxide
Than being 38%；The mass percent of silica is 55% in talcum, and the mass percent of magnesia is 35%.
The manufacturing method of the saggar the following steps are included:
Add water uniform in stirrer for mixing each raw material of formula ratio, then addition bonding agent is uniformly mixed again obtains
Mixture, mixture are formed through mold, and institute can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Saggar is stated, room temperature is cooled to；The bonding agent is spent pulping liquor or polyvinyl alcohol or dextrin, the additional amount of the spent pulping liquor
For 4%-10%, the additional amount of the polyvinyl alcohol is 5-8%, and the additional amount of the dextrin is 5-10%；Mixture uses liquid
At least one of molded, punch forming, vibration extrusion forming or gravity flow pouring molding；The raw embryo after molding places 3-5
It is demoulded after hour；It is 2-3h that the incorporation time that bonding agent mixes again, which is added,；Protective atmosphere in the sintering furnace be nitrogen or
Person's argon atmosphere；The temperature of firing is 1350-1500 DEG C, and heating rate is 5-20 DEG C/min, soaking time 4-6h；After firing
Saggar rate of temperature fall be 5-10 DEG C/min.
Embodiment one:
A kind of saggar and its manufacturing method, which is characterized in that be mainly prepared by the raw material of following mass fraction meter:
8 parts of kaolin, 7 parts of talcum, 4 parts of aluminium oxide, 22 parts of the corundum that 10 μm of partial size, 45 parts of the corundum of partial size 0.3mm, grain
20 parts of 300 mesh silicon carbide of diameter, 8 parts of mullite and partial size are 8 parts of cordierite of 0.4mm, wherein silica in kaolin
Mass percent is 50%, and the mass percent of aluminum oxide is 38%；The mass percent of silica is in talcum
55%, the mass percent of magnesia is 35%.
The manufacturing method of the saggar the following steps are included:
Add water uniform in stirrer for mixing each raw material of formula ratio, then addition bonding agent is uniformly mixed again obtains
Mixture, mixture are formed through mold, and institute can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Saggar is stated, room temperature is cooled to；The bonding agent is spent pulping liquor or polyvinyl alcohol or dextrin, the additional amount of the spent pulping liquor
It is 4%, the additional amount of the polyvinyl alcohol is 5%, and the additional amount of the dextrin is 5%；Mixture uses hydro-forming, punching press
At least one of molding, vibration extrusion forming or gravity flow pouring molding；The raw embryo after molding demoulds after placing 3 hours；Add
Entering the incorporation time that bonding agent mixes again is 2h；Protective atmosphere in the sintering furnace is nitrogen or argon atmosphere；Firing
Temperature be 1350 DEG C, heating rate be 5 DEG C/min, soaking time 4h；The rate of temperature fall of saggar after firing be 5 DEG C/
min。
Saggar prepared by the present invention, compression strength 20MPa, being used continuously 50 times will not still crack.
Embodiment two:
A kind of saggar and its manufacturing method, are mainly prepared by the raw material of following mass fraction meter:
9 parts of kaolin, 8 parts of talcum, 5 parts of aluminium oxide, 25 parts of the corundum that 25 μm of partial size, 50 parts of the corundum of partial size 0.5mm, grain
25 parts of 400 mesh silicon carbide of diameter, 10 parts of mullite and partial size are 12 parts of cordierite of 0.5mm, wherein silica in kaolin
Mass percent be 50%, the mass percent of aluminum oxide is 38%；The mass percent of silica is in talcum
55%, the mass percent of magnesia is 35%.
The manufacturing method of the saggar the following steps are included:
Add water uniform in stirrer for mixing each raw material of formula ratio, then addition bonding agent is uniformly mixed again obtains
Mixture, mixture are formed through mold, and institute can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Saggar is stated, room temperature is cooled to；The bonding agent is spent pulping liquor or polyvinyl alcohol or dextrin, the additional amount of the spent pulping liquor
It is 8%, the additional amount of the polyvinyl alcohol is 7%, and the additional amount of the dextrin is 8%；Mixture uses hydro-forming, punching press
At least one of molding, vibration extrusion forming or gravity flow pouring molding；The raw embryo after molding demoulds after placing 4 hours；Add
Entering the incorporation time that bonding agent mixes again is 2.5h；Protective atmosphere in the sintering furnace is nitrogen or argon atmosphere；It burns
At temperature be 1450 DEG C, heating rate be 10 DEG C/min, soaking time 5h；The rate of temperature fall of saggar after firing be 8 DEG C/
min。
Saggar prepared by the present invention, compression strength 25MPa, being used continuously 55 times will not still crack.
Embodiment three:
A kind of saggar and its manufacturing method, are mainly prepared by the raw material of following mass fraction meter:
10 parts of kaolin, 9 parts of talcum, 6 parts of aluminium oxide, 28 parts of the corundum that 40 μm of partial size, 58 parts of the corundum of partial size 0.8mm,
30 parts of 500 mesh silicon carbide of partial size, 15 parts of mullite and partial size are 16 parts of cordierite of 1mm, wherein silica in kaolin
Mass percent be 50%, the mass percent of aluminum oxide is 38%；The mass percent of silica is in talcum
55%, the mass percent of magnesia is 35%.
The manufacturing method of the saggar the following steps are included:
Add water uniform in stirrer for mixing each raw material of formula ratio, then addition bonding agent is uniformly mixed again obtains
Mixture, mixture are formed through mold, and institute can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Saggar is stated, room temperature is cooled to；The bonding agent is spent pulping liquor or polyvinyl alcohol or dextrin, the additional amount of the spent pulping liquor
It is 10%, the additional amount of the polyvinyl alcohol is 8%, and the additional amount of the dextrin is 10%；Mixture is using hydro-forming, punching
At least one of molded, vibration extrusion forming or gravity flow pouring molding；The raw embryo after molding demoulds after placing 5 hours；
It is 3h that the incorporation time that bonding agent mixes again, which is added,；Protective atmosphere in the sintering furnace is nitrogen or argon atmosphere；It burns
At temperature be 1500 DEG C, heating rate be 20 DEG C/min, soaking time 6h；The rate of temperature fall of saggar after firing is 10
℃/min。
Saggar prepared by the present invention, compression strength 22MPa, being used continuously 52 times will not still crack.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of saggar and its manufacturing method, which is characterized in that be mainly prepared by the raw material of following mass fraction meter:
8-10 parts of kaolin, 7-9 parts of talcum, 4-6 parts of aluminium oxide, 22-28 parts of 10 μm -40 μm of partial size of corundum, partial size 0.1-
45-58 parts of the corundum of 0.8mm, 18-30 parts of mesh silicon carbide of partial size 300-500,8-15 parts of mullite and partial size are 0.1-1mm's
8-16 parts of cordierite, wherein the mass percent of silica is 50% in kaolin, and the mass percent of aluminum oxide is
38%；The mass percent of silica is 55% in talcum, and the mass percent of magnesia is 35%.
2. a kind of saggar according to claim 1 and its manufacturing method, which is characterized in that the manufacturing method of the saggar includes
Following steps:
Add water uniform in stirrer for mixing each raw material of formula ratio, bonding agent is then added and is mixed again
Material, mixture are formed through mold, and the casket can be obtained after being sintered kiln roasting under protective atmosphere protection in molding raw embryo
Alms bowl is cooled to room temperature.
3. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that the bonding agent is spent pulping liquor
Or polyvinyl alcohol or dextrin, the additional amount of the spent pulping liquor are 4%-10%, the additional amount of the polyvinyl alcohol is 5-8%,
The additional amount of the dextrin is 5-10%.
4. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that mixture using hydro-forming,
At least one of punch forming, vibration extrusion forming or gravity flow pouring molding.
5. a kind of saggar according to claim 4 and its manufacturing method, which is characterized in that the raw embryo after molding is placed
It is demoulded after 3-5 hours.
6. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that be added what bonding agent mixed again
Incorporation time is 2-3h.
7. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that the protection gas in the sintering furnace
Atmosphere is nitrogen or argon atmosphere.
8. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that the temperature of firing is 1350-
1500 DEG C, heating rate is 5-20 DEG C/min, soaking time 4-6h.
9. a kind of saggar according to claim 2 and its manufacturing method, which is characterized in that the cooling speed of the saggar after firing
Rate is 5-10 DEG C/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425884.8A CN110451939A (en) | 2019-05-21 | 2019-05-21 | A kind of saggar and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425884.8A CN110451939A (en) | 2019-05-21 | 2019-05-21 | A kind of saggar and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
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| CN110451939A true CN110451939A (en) | 2019-11-15 |
Family
ID=68480984
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910425884.8A Withdrawn CN110451939A (en) | 2019-05-21 | 2019-05-21 | A kind of saggar and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521156A (en) * | 2022-08-10 | 2022-12-27 | 昆明理工大学 | Preparation method of ceramic sagger for lithium battery positive electrode material |
-
2019
- 2019-05-21 CN CN201910425884.8A patent/CN110451939A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521156A (en) * | 2022-08-10 | 2022-12-27 | 昆明理工大学 | Preparation method of ceramic sagger for lithium battery positive electrode material |
| CN115521156B (en) * | 2022-08-10 | 2023-10-20 | 昆明理工大学 | Preparation method of ceramic sagger for lithium battery anode material |
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Application publication date: 20191115 |
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