CN108673711A - The preparation process of hydro-forming lithium ion saggar - Google Patents
The preparation process of hydro-forming lithium ion saggar Download PDFInfo
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- CN108673711A CN108673711A CN201810464142.1A CN201810464142A CN108673711A CN 108673711 A CN108673711 A CN 108673711A CN 201810464142 A CN201810464142 A CN 201810464142A CN 108673711 A CN108673711 A CN 108673711A
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- saggar
- lithium ion
- blank
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- preparation process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/029—Feeding the unshaped material to moulds or apparatus for producing shaped articles through a sieve or grid, e.g. to ensure evenly filling of cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
-
- 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
- C04B35/14—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 silica
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a kind of preparation process of saggar, the specifically preparation processes of a hydro-forming lithium ion saggar, including preparation sagger body；Blank is sieved, the fine powder cloth sifted out forms it into saggar internal layer on saggar mold；Blank is covered with saggar mold, is then struck off；Using hydraulic press by the blank compression moulding in saggar mold；Depanning.The preparation process of hydro-forming lithium ion saggar provided by the invention, it is fed using layering, and by the way of hydro-forming of hydraulic press, it is compared with traditional frictional press or vibrations press, it is possible to provide a kind of porosity is small, density is high and lithium ion saggar uniform, that intensity is big, easy to operate.
Description
Technical field
The present invention relates to a kind of preparation process of saggar, the specifically preparation work of a hydro-forming lithium ion saggar
Skill.
Background technology
Rechargeable battery of the lithium ion battery as current performance most advantage, to its performance with matter quantifier elimination also continuous
Deeply.With the continuous popularization of lithium ion battery applications, the demand of anode material for lithium-ion batteries is continuously increased, lithium-ion electric
Therefore how the quality that the quality of pond anode quality will directly affect lithium ion battery further increases lithium ion battery
The quality of anode also has become focus of people's attention.
It is mainly LiCoO2, LiNiO2, LiMn2O4, Li to prepare positive electrode used by lithium ion battery at present
(CoxNiyMn1-x-y) O2, (0 ＜ x, y ＜ 1), LiFePO4 and its doping or modifier, these materials are mostly highly basic
Property material, produce the capital equipment generally use kiln of lithium ion cell positive, needed in kiln using sagger special load
Positive electrode, then by saggar be put into kiln to material carry out high temperature sintering, therefore, the quality requirement to saggar compared with
It is high.However, existing lithium ion saggar generally uses frictional press or vibrations press wet moulding, wet moulding to require blank
Moisture reach 14% or so, the moisture is higher, can cause moisture exclude after green body the porosity it is excessive, reduce saggar
Intensity makes the service life of saggar substantially reduce, and can not meet requirement of the lithium electricity production to saggar；And depanning is necessary after wet moulding
It could be touched after being sintered or drying, cannot pull up a horse manually depanning, and production efficiency is low；Frictional press and shake are used simultaneously
The shortcomings that dynamic compressor is molded saggar, and needing big impact force to impact blank makes its molding, both molding modes is big rush
It is broken that pressure can be such that the bulky grain of blank is squeezed, meanwhile, big abrasion can be also caused to mold.
Invention content
The hydro-forming lithium that a kind of molding mode is simple in view of the above-mentioned problems, the present invention provides, production efficiency is high from
The preparation process of sub- saggar.
Technical solution is used by the present invention solves above-mentioned technical problem：Prepare sagger body；
（b）：By step（a）In blank sieving, the fine powder cloth sifted out forms it into saggar internal layer on saggar mold；
（c）：Blank is covered with saggar mold, is then struck off；
（d）：Using hydraulic press by the blank compression moulding in saggar mold；
（e）：Depanning.
Preferably, step（a）In, the blank is kneaded using batch mixer, and it is 3%-4% to control the blank water content.
Preferably, the blank includes mullite, corundum, zirconium oxide, molten quartz, alumina powder, clay, quality
Than being 20:20:10:25:10:10.
Preferably, step（a）In, the blank after mixing carries out closed aging.
Preferably, blank is closed using plastic box, the aging time is 22-25 hours.
Preferably, the batch mixer is planetary batch mixer.
Preferably, step（b）In, blank encloses sieve using 24 purposes and is sieved, and obtains the fine powder.
Preferably, the fine powder fabric thickness is 1.5-3mm.
Preferably, step（d）Described in hydraulic press briquetting pressure be 18-23MPa, dwell time 28-32s.
Preferably, step（e）In, the molding blank after depanning can be by manually moving out.
The preparation process of hydro-forming lithium ion saggar provided by the invention is fed using layering, and uses hydraulic pressure
The mode of hydro-forming of machine, compared with traditional frictional press or vibrations press, it is possible to provide a kind of porosity is small, close
High and uniform, intensity is big, the easy to operate lithium ion saggar of degree.
Specific implementation mode
The present invention is described more detail below, illustrative examples of the invention and explanation are used for explaining the present invention herein,
But it is not as a limitation of the invention.
The present invention provides the preparation process of a hydro-forming lithium ion saggar, and when implementing dispensing, the blank uses
Mullite, corundum, zirconium oxide, molten quartz, alumina powder, clay, match and are:20:20:10:25:10:10.Due to ion casket
The quality of the porosity of alms bowl, density and lithium ion anode material has a significant impact.Present invention blank water content in dispensing is 3%-
4%, the standard for being 14% far below water content in wet therapy forming process in the prior art.That is, the present invention almost it may be said that
It is dry-press process, the porosity that lower water content is conducive to green body after moisture excludes becomes smaller compared to before, and density increases, by force
Spend higher；Simultaneously in depanning, green compact can be moved out manually at once without damage, can just be removed without waiting it to dry
It is dynamic, solve the problems, such as that the wet processing porosity is big in the prior art, density is small, intensity is low and efficiency is low.Moreover, of the invention
Using hydro-forming of hydraulic press, mechanization hydraulic pressure is efficient, significantly reduces compared with the prior art to wear and tear in machines,
The particle of green body will not be formed and be damaged, also solve pressure caused by using frictional press and vibrations press in the prior art
Machine impact force is excessive to make the bulky grain of blank be squeezed broken problem.
The present invention is kneaded blank using planetary batch mixer, and efficient and blank is uniformly mixed, by what is be kneaded
The closed progress of blank is aging, is conducive to keep its uniform moisture consistent, and closed using plastic box, and at low cost, good airproof performance, this is just
Advantageous precondition is created to the preparation of later stage saggar.In implementation process, the fine powder in blank is crossed and is sifted out by the present invention
Carry out cloth to use as saggar internal layer on saggar mold, saggar internal layer even compact, beauty can be made, while also making lithium ion anode
When material is placed on processing in saggar, suffered friction smaller, to be more advantageous to the high-quality processing of lithium ion anode material；Carefully
Powder fabric thickness is 2mm, can meet saggar internal layer and uniformly require, had shown that through test of many times research, hydraulic pressure in the present invention
Pressure most preferably 20MPa, dwell time 30s when machine works, and be vented 2 times, it can be maximum using minimum resource
Prepare high-quality lithium ion saggar as defined in meeting.Refer to following embodiment.
Embodiment 1
A kind of preparation process of hydraulic pressure one-pass molding lithium ion saggar, includes the following steps,
（a）：Dispensing, use proportioning for:20:20:10:25:10:10 mullite, corundum, zirconium oxide, molten quartz, aluminium oxide
Powder, clay embryo material carry out dispensing, and sagger body is kneaded using planetary batch mixer, and it is 3% to control the embryo material water content, is kneaded
Blank using closed aging 22 hours of plastic box, keep its uniform moisture consistent；
（b）：By step（a）In dispensing sieving, with the small round screen of 24 mesh by the fine powder cloth sifted out on saggar mold, make its pressure
The saggar internal layer of even compact is formed after system, the fine powder fabric thickness is 1.5mm；
（c）：By step（b）The middle batching weighing crossed after brushing, the blank for weighing required saggar appropriate components are covered with saggar mold, so
After strike off cloth；
（d）：Using hydraulic press by the dispensing pressing molding in saggar mold, pressure 18MPa, dwell time 28s are vented 2
It is secondary；
（e）：Depanning, the saggar of forming can be moved out manually since moisture is few after ejection.
Embodiment 2
A kind of preparation process of hydraulic pressure one-pass molding lithium ion saggar, includes the following steps,
（a）：Dispensing, use proportioning for:20:20:10:25:10:10 mullite, corundum, zirconium oxide, molten quartz, aluminium oxide
Powder, clay embryo material carry out dispensing, and sagger body is kneaded using planetary batch mixer, and it is 4% to control the embryo material water content, is kneaded
Blank using closed aging 25 hours of plastic box, keep its uniform moisture consistent；
（b）：By step（a）In dispensing sieving, with the small round screen of 24 mesh by the fine powder cloth sifted out on saggar mold, make its pressure
The saggar internal layer of even compact is formed after system, the fine powder fabric thickness is 3mm；
（c）：By step（b）The middle batching weighing crossed after brushing, the blank for weighing required saggar appropriate components are covered with saggar mold, so
After strike off cloth；
（d）：Using hydraulic press by the dispensing pressing molding in saggar mold, pressure 23MPa, dwell time 32s are vented 2
It is secondary；
（e）：Depanning, the saggar of forming can be moved out manually since moisture is few after ejection.
Embodiment 3
A kind of preparation process of hydraulic pressure one-pass molding lithium ion saggar, includes the following steps,
（a）：Dispensing, use proportioning for:20:20:10:25:10:10 mullite, corundum, zirconium oxide, molten quartz, aluminium oxide
Powder, clay embryo material carry out dispensing, and sagger body is kneaded using planetary batch mixer, and it is 3%-4% to control the embryo material water content, is kneaded
Good blank uses plastic box closed aging 24 hours, keeps its uniform moisture consistent；
（b）：By step（a）In dispensing sieving, with the small round screen of 24 mesh by the fine powder cloth sifted out on saggar mold, make its pressure
The saggar internal layer of even compact is formed after system；The fine powder fabric thickness is 2.5mm
（c）：By step（b）The middle batching weighing crossed after brushing, the blank for weighing required saggar appropriate components are covered with saggar mold, so
After strike off cloth；
（d）：Using hydraulic press by the dispensing pressing molding in saggar mold, pressure 20MPa, dwell time 30s are vented 2
It is secondary；
（e）：Depanning, the saggar of forming can be moved out manually since moisture is few after ejection.
The product prepared to the technique of embodiment 1-3 is detected, as a result such as following table：
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | The prior art |
| The porosity | 25 | 22 | 23 | 28 |
| Density | 2.05 | 2.15 | 2.1 | 1.95 |
As seen from the above table, the Li Lizhen saggar porositys that prepared by the present invention are small, density is high.
It is provided for the embodiments of the invention technical solution above to be described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are expounded, the explanation of above example is only applicable to help to understand this
The principle of inventive embodiments；Meanwhile for those of ordinary skill in the art, embodiment according to the present invention, in specific embodiment party
There will be changes in formula and application range, in conclusion the content of the present specification should not be construed as limiting the invention.
Claims (10)
1. the preparation process of a hydro-forming lithium ion saggar, it is characterised in that：Include the following steps,
（a）：Prepare sagger body；
（b）：By step（a）In blank sieving, the fine powder cloth sifted out forms it into saggar internal layer on saggar mold；
（c）：Blank is covered with saggar mold, is then struck off；
（d）：Using hydraulic press by the blank compression moulding in saggar mold；
（e）：Depanning.
2. the preparation process of a hydro-forming lithium ion saggar according to claim 1, it is characterised in that：Step（a）In,
The blank is kneaded using batch mixer, and it is 3%-4% to control the blank water content.
3. the preparation process of a hydro-forming lithium ion saggar according to claim 2, it is characterised in that：The blank packet
Containing mullite, corundum, zirconium oxide, molten quartz, alumina powder, clay, mass ratio 20:20:10:25:10:10.
4. the preparation process of a hydro-forming lithium ion saggar according to claim 2, it is characterised in that：Step（a）In,
Blank after mixing carries out closed aging.
5. the preparation process of a hydro-forming lithium ion saggar according to claim 4, it is characterised in that：Blank is using modeling
Hopper is closed, and the aging time is 22-25 hours.
6. the preparation process of a hydro-forming lithium ion saggar according to claim 2, it is characterised in that：The batch mixer
For planetary batch mixer.
7. the preparation process of a hydro-forming lithium ion saggar according to claim 1, it is characterised in that：Step（b）In,
Blank encloses sieve using 24 purposes and is sieved, and obtains the fine powder.
8. the preparation process of a hydro-forming lithium ion saggar according to claim 7, it is characterised in that：The fine powder cloth
Material thickness is 1.5-3mm.
9. the preparation process of a hydro-forming lithium ion saggar according to claim 1, it is characterised in that：Step（d）In
The hydraulic press briquetting pressure is 18-23MPa, dwell time 28-32s.
10. the preparation process of a hydro-forming lithium ion saggar according to claim 1, it is characterised in that：Step（e）
In, the molding blank after depanning can be by manually moving out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464142.1A CN108673711A (en) | 2018-05-16 | 2018-05-16 | The preparation process of hydro-forming lithium ion saggar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464142.1A CN108673711A (en) | 2018-05-16 | 2018-05-16 | The preparation process of hydro-forming lithium ion saggar |
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| CN108673711A true CN108673711A (en) | 2018-10-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105669223A (en) * | 2016-01-08 | 2016-06-15 | 浙江长兴久鑫耐火材料有限公司 | Sagger |
| CN105693227A (en) * | 2016-01-08 | 2016-06-22 | 浙江长兴久鑫耐火材料有限公司 | Novel saggar |
| CN107382298A (en) * | 2017-07-19 | 2017-11-24 | 宜兴市锦泰耐火材料有限公司 | Battery material roasting saggar and preparation method thereof |
| CN107954732A (en) * | 2017-12-12 | 2018-04-24 | 浙江大学 | Cordierite-forsterite saggar, preparation method and applications |
| CN107963900A (en) * | 2017-12-25 | 2018-04-27 | 浙江大学 | Compound saggar, preparation method and applications |
| CN108033787A (en) * | 2017-12-12 | 2018-05-15 | 浙江大学 | Metatitanic acid alumina-spinelle saggar, preparation method and applications |
-
2018
- 2018-05-16 CN CN201810464142.1A patent/CN108673711A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105669223A (en) * | 2016-01-08 | 2016-06-15 | 浙江长兴久鑫耐火材料有限公司 | Sagger |
| CN105693227A (en) * | 2016-01-08 | 2016-06-22 | 浙江长兴久鑫耐火材料有限公司 | Novel saggar |
| CN107382298A (en) * | 2017-07-19 | 2017-11-24 | 宜兴市锦泰耐火材料有限公司 | Battery material roasting saggar and preparation method thereof |
| CN107954732A (en) * | 2017-12-12 | 2018-04-24 | 浙江大学 | Cordierite-forsterite saggar, preparation method and applications |
| CN108033787A (en) * | 2017-12-12 | 2018-05-15 | 浙江大学 | Metatitanic acid alumina-spinelle saggar, preparation method and applications |
| CN107963900A (en) * | 2017-12-25 | 2018-04-27 | 浙江大学 | Compound saggar, preparation method and applications |
Non-Patent Citations (1)
| Title |
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| 西北轻工业学院: "《高等学校轻工专业试用教材 陶瓷工艺学》", 30 April 1993, 中国轻工业出版社 * |
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