CN102515807A - Method for packing graphite micro-powder in graphite crucible - Google Patents
Method for packing graphite micro-powder in graphite crucible Download PDFInfo
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- CN102515807A CN102515807A CN201110441477XA CN201110441477A CN102515807A CN 102515807 A CN102515807 A CN 102515807A CN 201110441477X A CN201110441477X A CN 201110441477XA CN 201110441477 A CN201110441477 A CN 201110441477A CN 102515807 A CN102515807 A CN 102515807A
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Abstract
The invention provides a method for packing graphite micro-powder in a graphite crucible. The method comprises the following steps: 1) adding the graphite micro-powder to a container, adding a wetting solution, and uniformly mixing, wherein the mass of the wetting solution is 3-5% of the mass of the graphite micro-powder; and 2) pressing the mixed material into a cake. According to the present invention, the graphite cake material suitable for packing in the graphite crucible is obtained through the steps, the container is a high speed mixing machine, the wetting solution is water or ethanol or stearic acid, the pressing process is performed by vacuum pressing or normal pressure pressing, and the pressing machinery adopts a plate press, an extruder or a press filter. With the present invention, the graphite micro-powder is pressed into the cake material, such that the material packing amount is increased, the material packing is convenient, no dust is generated, the process is simple, and is applicable for popularization.
Description
Technical field
The present invention relates to the carbon material manufacture field, particularly a kind of method of graphite microparticles filling plumbago crucible.
Background technology
The pyroprocessing of graphite microparticles material is that powder body material is packed in the plumbago crucible, plumbago crucible is packed into heat in the High Temperature Furnaces Heating Apparatus.High temperature can play two aspect effects for carbonaceous material or graphite material: the one, and the greying of carbonaceous material, the 2nd, the purifying of carbonaceous material or graphite material.
General MOX, sulfide, halogenide and other oxysalt class material impurities fusing points are below 2800 ℃; If furnace temperature is brought up to about 2800 ℃; Impurity will evaporate into gaseous state; And carbonaceous or graphite material can not change under this temperature, and foreign gas is taken out of body of heater by carrier gas, thereby make graphite purifying in the stove.
Greying is meant carbonaceous material temperature under protective gas or secluding air condition is reached more than 2000 ℃ that carbonaceous material is converted into the process of graphite material.According to the difference of carbonaceous material structure, graphitization temperature also has difference.
The high temperature graphitization stove generally has three kinds of type of furnaces, and a kind of is Acheson's resistance furnace of Acheson's resistance furnace or serial connection, and a kind of is carbon tube furnace, and a kind of is the high temperature graphitization stove.Graphite microparticles or coating graphite pyroprocessing adopt Acheson's resistance furnace; Be that plumbago crucible is packed in the stove; Around plumbago crucible, load the resistance heating material; Generally be refinery coke or other coke, utilize electrifying electrodes furnace core resistance heating and obtain high temperature that this body of heater combustion chamber temperature can reach more than 2500 ℃; Graphite microparticles or coating graphite pyroprocessing adopt carbon tube furnace, and carbon tube furnace is a kind of graphite tube resistance furnace, are plumbago crucible is pushed the continous way push boat type stove that the other end is released from carbon Guan Yiduan, and this body of heater combustion chamber temperature can reach more than 2200 ℃; Graphite microparticles or coating graphite adopt the graphitizable high temperature stove; The graphitizable high temperature stove is a kind of medium-frequency induction furnace; Plumbago crucible is placed in the coil by the copper pipe coiling, and the energising back produces eddy-current heating and obtains high temperature in plumbago crucible, and this body of heater combustion chamber temperature can reach more than 2700 ℃.
Summary of the invention
Technical problem to be solved by this invention provides a kind of graphite microparticles and is loaded into the working method in the plumbago crucible, graphite microparticles is made biscuit through moistening processing, no bonding method, like this; Biscuit density improves; Crucible filling weight of material increases greatly, and convenient filling, no dust; Furnace temperature heats up and cooling rate improves, and effectively reduces the product unit power consumption.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of method of graphite microparticles filling plumbago crucible may further comprise the steps:
1) graphite microparticles is joined in the container, add the Wetting Solution of graphite microparticles quality 3-5% again, mix;
2) mixed material is pressed into cake;
Obtain being suitable for loading the graphite biscuit of plumbago crucible through above-mentioned steps.
The described container of step 1) is a high-speed mixer.
The said Wetting Solution of step 1) is water or ethanol or Triple Pressed Stearic Acid.
Step 2) pressing process adopts vacuum pressing or normal pressure compacting.
Step 2) pressing machinery is selected platen-press, extrusion machine or pressure filter for use.
The method of a kind of graphite microparticles filling plumbago crucible provided by the invention because the graphite microparticles specific surface area is big, has certain autohension; Add less water, ethanol or Triple Pressed Stearic Acid as shaping assistant; Utilized the surface tension effects of auxiliary agent on the one hand, made powder have cementability, on the other hand; Powder surface adheres to rete makes powder have certain oilness, increases powder plasticity and flowability; And the auxiliary agent that adds do not influence graphite and forms, and at high temperature can not form sintering.
When moulding, adopt vacuum pressing, can reduce gap between the particle, improve associativity between the powder.
The invention has the beneficial effects as follows pressed by powder is become biscuit, make the more material of when pyroprocessing, in limited space, packing into, raise the efficiency save energy.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1
Crystalline graphite powder granularity 200 orders, carbon content 99.95%, tap density is 0.3g/cm3, adds water 4wt%; In stirrer, mix, mix moistening after, put into the 60*60*80mm punching block; On 400 tons of vacuum press, at 250MPa, vacuum tightness is-0.09MPa; Abandon twice condition pressed moulding, formed body thickness 20mm, molding density is 1.2g/cm3.
Embodiment 2
Spherical crystalline flake graphite negative material powder D50 is 18 μ, carbon content 99.95%, and tap density is 0.7g/cm3, adds water 4wt%; In stirrer, mix, mix moistening after, put into the 60*60*80mm punching block; On 400 tons of vacuum press, at 250MPa, vacuum tightness is-0.09MPa; Abandon twice condition pressed moulding, formed body thickness 20mm, molding density is 1.9g/cm3.
Embodiment 3
Carbonaceous mesophase spherules powder D50 is 18 μ, carbon content 99.95%, and tap density is 0.7g/cm3, adds water 4wt%; In stirrer, mix, mix moistening after, put into the 60*60*80mm punching block; On 400 tons of vacuum press, at 250MPa, vacuum tightness is-0.09MPa; Abandon twice condition pressed moulding, formed body thickness 20mm, molding density is 2.0g/cm3.
Claims (5)
1. the method for graphite microparticles filling plumbago crucible is characterized in that may further comprise the steps:
1) graphite microparticles is joined in the container, add the Wetting Solution of graphite microparticles quality 3-5% again, mix;
2) mixed material is pressed into cake;
Obtain being suitable for loading the graphite biscuit of plumbago crucible through above-mentioned steps.
2. the method for a kind of graphite microparticles filling plumbago crucible according to claim 1, it is characterized in that: the described container of step 1) is a high-speed mixer.
3. the method for a kind of graphite microparticles filling plumbago crucible according to claim 1, it is characterized in that: the said Wetting Solution of step 1) is water or ethanol or Triple Pressed Stearic Acid.
4. the method for a kind of graphite microparticles filling plumbago crucible according to claim 1 is characterized in that: step 2) pressing process employing vacuum pressing or normal pressure compacting.
5. according to claim 1 and 3 described a kind of graphite biscuit working methods, it is characterized in that: step 2) pressing machinery selects platen-press, extrusion machine or pressure filter for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110441477XA CN102515807A (en) | 2011-12-26 | 2011-12-26 | Method for packing graphite micro-powder in graphite crucible |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441477XA CN102515807A (en) | 2011-12-26 | 2011-12-26 | Method for packing graphite micro-powder in graphite crucible |
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| CN102515807A true CN102515807A (en) | 2012-06-27 |
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| CN201110441477XA Pending CN102515807A (en) | 2011-12-26 | 2011-12-26 | Method for packing graphite micro-powder in graphite crucible |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528689A (en) * | 2015-01-08 | 2015-04-22 | 四川都江堰西马炭素有限公司 | Powder filling method |
| CN109503166A (en) * | 2018-09-29 | 2019-03-22 | 东莞市凯金新能源科技股份有限公司 | A kind of flatbed lithium ion battery graphite cathode material and preparation method |
| CN109760184A (en) * | 2019-03-05 | 2019-05-17 | 安徽科达洁能新材料有限公司 | A kind of graphite crucible hydro-forming dress crucible system and technique |
| CN113074549A (en) * | 2021-04-26 | 2021-07-06 | 洛阳景瑞工业科技有限公司 | Anti-cracking method of graphite crucible |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126721A (en) * | 2011-04-27 | 2011-07-20 | 深圳市贝特瑞新能源材料股份有限公司 | Purification and graphitization method of graphite material |
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2011
- 2011-12-26 CN CN201110441477XA patent/CN102515807A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126721A (en) * | 2011-04-27 | 2011-07-20 | 深圳市贝特瑞新能源材料股份有限公司 | Purification and graphitization method of graphite material |
Non-Patent Citations (1)
| Title |
|---|
| 清野定纪: "第十一讲 人造石墨材料", 《新型碳材料》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528689A (en) * | 2015-01-08 | 2015-04-22 | 四川都江堰西马炭素有限公司 | Powder filling method |
| CN104528689B (en) * | 2015-01-08 | 2017-01-11 | 简阳市龙兴炭素有限公司 | Powder filling method |
| CN109503166A (en) * | 2018-09-29 | 2019-03-22 | 东莞市凯金新能源科技股份有限公司 | A kind of flatbed lithium ion battery graphite cathode material and preparation method |
| CN109503166B (en) * | 2018-09-29 | 2021-07-23 | 广东凯金新能源科技股份有限公司 | Graphite cathode material for platform type lithium ion battery and preparation method thereof |
| CN109760184A (en) * | 2019-03-05 | 2019-05-17 | 安徽科达洁能新材料有限公司 | A kind of graphite crucible hydro-forming dress crucible system and technique |
| CN109760184B (en) * | 2019-03-05 | 2023-11-03 | 安徽科达新材料有限公司 | Hydraulic forming crucible loading system and process for graphite crucible |
| CN113074549A (en) * | 2021-04-26 | 2021-07-06 | 洛阳景瑞工业科技有限公司 | Anti-cracking method of graphite crucible |
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Application publication date: 20120627 |