CN111707097A - Purification and rapid cooling smelting furnace for producing battery negative electrode material - Google Patents

Purification and rapid cooling smelting furnace for producing battery negative electrode material Download PDF

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Publication number
CN111707097A
CN111707097A CN202010590694.4A CN202010590694A CN111707097A CN 111707097 A CN111707097 A CN 111707097A CN 202010590694 A CN202010590694 A CN 202010590694A CN 111707097 A CN111707097 A CN 111707097A
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China
Prior art keywords
negative electrode
furnace
heat
battery negative
heat exchanger
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Pending
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CN202010590694.4A
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Chinese (zh)
Inventor
姜洪金
姜腾
徐卫
种江华
薛倩
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Ningxia Hongteng Technology Development Co ltd
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Ningxia Hongteng Technology Development Co ltd
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Priority to CN202010590694.4A priority Critical patent/CN111707097A/en
Publication of CN111707097A publication Critical patent/CN111707097A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/20—Graphite
    • C01B32/21—After-treatment
    • C01B32/215—Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/10—Crucibles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/14—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/0881—Two or more crucibles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

A purification and rapid cooling smelting furnace for producing battery negative electrode materials, comprising: the device comprises a closed furnace body, a conductive heating device and a heat exchange cooling device; the conductive heating device includes: a plurality of graphite crucibles which are arranged in sequence and are closely arranged, wherein any two adjacent graphite crucibles have conductivity; the inner part of the closed furnace body is provided with a heat-insulating layer for wrapping a plurality of graphite crucibles, and the bottom of the heat-insulating layer positioned at the lower layer is uniformly provided with a plurality of steam inlet pipelines; the device is characterized by also comprising a vacuumizing device connected with the closed furnace body, high-temperature gas in the closed furnace body is sent into the heat exchange cooling device through the vacuumizing device to be cooled, and the low-temperature gas discharge end of the heat exchange cooling device is connected with a plurality of gas inlet pipelines. In the invention, impurities are fully decomposed and evaporated by vacuum smelting of the battery cathode material; the arranged heat insulation layer can ensure that the thermal field does not leak and prevent air from oxidizing the high-temperature graphite crucible; meanwhile, the cooling time is shortened through the arranged heat exchange cooling device, and the production efficiency is accelerated.

Description

Purification and rapid cooling smelting furnace for producing battery negative electrode material
The technical field is as follows:
the invention relates to the technical field of battery cathode material smelting, in particular to a purification and rapid cooling smelting furnace for producing a battery cathode material.
Background art:
the lithium ion battery has the advantages of higher theoretical specific capacity, longer cycle life, high safety and the like, and is a hotspot of new energy research in recent years. In the process of charging and discharging of the lithium ion battery, Li + is inserted and extracted back and forth between the positive electrode and the negative electrode. Therefore, the selection of the anode material plays a crucial role in the capacity of the lithium ion battery. At present, carbon materials, silicon materials and metal or alloy materials are mainly selected as negative electrode materials of lithium ions, the raw materials of the carbon materials are easy to obtain, the theoretical capacity is high, and sufficient lithium storage space can be provided, and the carbon materials are preferably adopted by the current commercial lithium ion batteries as the negative electrodes of the lithium ion batteries.
The carbon material of the lithium ion battery negative electrode is generally selected from natural graphite and artificial graphite. However, in the process of preparing the battery cathode material, high temperature is adopted for smelting and purifying under normal pressure, so that impurities in the battery cathode material are not easy to decompose and evaporate, and after the cathode material is smelted, the temperature of a furnace core is too high, the natural cooling time is longer, so that the production efficiency is low, and a large amount of heat energy and gas are wasted.
The invention content is as follows:
in view of the above, there is a need for a rapid cooling and purifying smelting furnace for producing negative electrode materials of batteries, which can improve the purity of the negative electrode materials of batteries, reduce the cooling time, and recycle the heat energy and the generated waste gas.
A purification and rapid cooling smelting furnace for producing battery negative electrode materials, which is characterized by comprising: the device comprises a closed furnace body, a conductive heating device and a heat exchange cooling device; wherein the content of the first and second substances,
the conductive heating device includes: a plurality of graphite crucibles which are arranged in sequence and are closely arranged, wherein any two adjacent graphite crucibles have conductivity;
the heat-insulating layer used for wrapping the graphite crucibles is arranged inside the closed furnace body, and a plurality of steam inlet pipelines are uniformly arranged at the bottom of the heat-insulating layer at the lower layer;
the device is characterized by further comprising a vacuumizing device connected with the closed furnace body, high-temperature gas in the closed furnace body is sent into the heat exchange cooling device through the vacuumizing device for cooling, and the low-temperature gas discharge end of the heat exchange cooling device is connected with the plurality of gas inlet pipelines.
Preferably, the closed furnace body includes: sealing the furnace shell and the furnace cover; the top of the closed furnace shell is provided with an opening, and the furnace cover is detachably and fixedly connected with the closed furnace shell and seals the opening.
Preferably, a breathable sand stone layer is arranged between the plurality of steam inlet pipelines and the heat insulation layer of the lower layer.
Preferably, both ends of the inside of the closed furnace shell are provided with a plurality of furnace ends electrically connected with the graphite crucibles, the furnace ends at both ends are assembled with a positive conductive end and a negative conductive end in a one-to-one correspondence manner, and the positive conductive end and the negative conductive end are correspondingly connected with a conductive copper bar extending to the outside of the closed furnace shell.
Preferably, the connection between the two conductive copper bars and the corresponding positive conductive end and the negative conductive end is provided with a cooling water jacket.
Preferably, the upper part of one side of the closed furnace body is provided with a high-temperature discharge pipe;
the heat exchange cooling device comprises: a heat exchanger; the high-temperature discharge pipe is connected with one side of the tube pass of the heat exchanger, and the other side of the tube pass of the heat exchanger is connected with the vacuumizing device; and the bottom of the heat exchanger is provided with a cooling water supply pipe communicated with the shell pass of the heat exchanger, and the top of the heat exchanger is provided with a heat discharge water pipe communicated with the shell pass of the heat exchanger.
Preferably, a normally closed exhaust valve is arranged on any side of the tube pass of the heat exchanger.
Preferably, the vacuum pumping device comprises: a Roots blower; the air exhaust end of the Roots blower is connected with the tube side of the heat exchanger, and the air exhaust end of the Roots blower is connected with the multiple steam inlet pipelines through the steam delivery pipe.
Preferably, the heat-insulating layer is any one of petroleum coke and coal.
Preferably, the gas-fired boiler further comprises a gas discharge pipe connected to the gas transmission pipe, and a valve is assembled on the gas discharge pipe.
In the invention, impurities are fully decomposed and evaporated by vacuum smelting of the battery cathode material; the arranged heat insulation layer can ensure that the thermal field does not leak and prevent air from oxidizing the high-temperature graphite crucible; meanwhile, the cooling time is shortened through the arranged heat exchange cooling device, and the production efficiency is accelerated. And the heat energy and the waste gas generated in the smelting process are fully utilized, and the production cost is reduced.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a purification and rapid cooling smelting furnace for producing battery cathode materials.
Fig. 2 is a schematic structural view of the conductive heating apparatus of the present invention.
FIG. 3 is a distribution diagram of a plurality of steam inlet lines in the present invention.
Fig. 4 is a partial structural schematic diagram of the present invention.
Fig. 5 is a schematic view of the internal structure of the heat exchanger according to the present invention.
FIG. 6 is a schematic view showing the structure of a graphite crucible of the present invention.
In the figure:
a sealed furnace body-10, a sealed furnace shell-11, a furnace cover-12, a heat preservation layer-13, a steam inlet pipeline-14, a breathable sandstone layer-15, a positive electrode conducting end-16A, a negative electrode conducting end-16B, a conducting copper bar-17, a cooling water jacket-18, a first furnace head-19A and a second furnace head-19B;
a conductive heating device-20, a graphite crucible-21, a fire wall-22 and a pot cover-23;
a heat exchanger-30, a cooling water supply pipe-31, a heat discharging water pipe-32, a normally closed exhaust valve-33, a tube side-34 and a tube plate 35; a Roots blower-40 steam transmission pipe-41, a switch valve-42, a fuel gas discharge pipe-43 and a valve-44.
The specific implementation mode is as follows:
referring collectively to fig. 1-2, a purification and rapid cooling smelting furnace for producing negative electrode materials of batteries includes: sealing the furnace body 10; the sealed furnace body 10 is used as a main body device in the embodiment of the application, and the battery cathode material is purified by vacuum smelting.
The closed furnace body 10 includes: a furnace shell 11 and a furnace cover 12 are sealed; wherein, the top of the closed furnace shell 11 is opened, and the furnace cover 12 is detachably and fixedly connected with the closed furnace shell 11 and seals the opening. Thereby completing the charging and discharging work through the opening and closing of the furnace cover 12.
In addition, when the battery negative electrode material is purified at a high temperature, the conductive heating device 20 is used to heat the battery negative electrode material at a high temperature in the present embodiment. Specifically, the conductive heating device 20 includes: a plurality of graphite crucibles 21 arranged in close proximity to each other in this order, and any adjacent two of the graphite crucibles 21 have electrical conductivity. As shown in fig. 2, the length of the closed shell 11 is about 30m, and a rectangular fire wall 22 is built inside the closed shell 11, and the length of the fire wall 22 is about 27m, the width thereof is about 2.5m, and the height thereof is about 2.6 m. As shown in fig. 6, each graphite crucible 21 is equipped with a lid 23, and a battery negative electrode material is carried inside the graphite crucible 21. The graphite crucible 21 is a cylindrical pot body, the diameter of which is about 0.5m and the height of which is about 1.3 m. As can be seen from the above description, the graphite crucibles 21 can be stacked in two layers inside the sealed furnace shell 11, 270 graphite crucibles 21 can be placed in close contact with each other in a single layer, 540 graphite crucibles can be placed inside the whole sealed furnace shell 11, and graphite powder is scattered in the gap between any adjacent graphite crucibles 21, so that the plurality of graphite crucibles 21 have conductivity, and thus the battery negative electrode material inside is heated by energization, and the graphite crucibles 21 heated in a split manner heat the battery negative electrode material inside more uniformly.
With reference to fig. 2, when the graphite crucibles 21 are electrically conducted, the furnace shell 11 has furnace ends electrically connected to the graphite crucibles 21 at both ends of the inner portion. For convenience of understanding, the left end burner is divided into a first burner 19A, and the positive conductive terminal 16A is mounted on the first burner 19A; the right end of the furnace head is divided into a second furnace head 19B, and a negative conductive end 16B is arranged on the second furnace head 19B. The positive conductive end 16A and the negative conductive end 16B are both connected with a conductive copper bar 17 extending to the outside of the closed furnace shell 11. The positive conductive end 16A and the negative conductive end 16B are electrically connected to an external 380 v high-voltage circuit, and the positive conductive end 16A and the negative conductive end 16B are both conductively connected to a plurality of graphite crucibles 21 by using graphite blocks.
After the plurality of graphite crucibles 21 are electrically heated, an insulating layer 13 for covering the plurality of graphite crucibles 21 is provided inside the sealed furnace shell 11 in order to prevent a thermal field of the plurality of graphite crucibles 21 from leaking. The thickness of the heat insulating layer 13 is about 1m, and the graphite crucible 21 can avoid heat energy leakage and insulate air from oxidizing high temperature. The heat insulating layer 13 is preferably made of any one of petroleum coke and coal, so that CH is generated after the heat insulating layer 13 is heated4、C2H4And other tar vapors. In the present embodiment, the generated combustible gas is recovered and reused for combustion power generation and the like.
Referring to fig. 3, after the battery negative electrode material in the graphite crucible 21 is purified, the conventional natural cooling takes a long time, resulting in a low production efficiency. For this reason, the exhaust steam generated by the insulating layer 13 is used for cooling after the smelting is completed, and the cooled steam is injected into the lower part of the closed furnace shell 11 again for discharging. Specifically, a plurality of steam inlet pipelines 14 are uniformly arranged at the bottom of the lower heat-insulating layer 13, and a breathable sand stone layer 15 is arranged between the steam inlet pipelines 14 and the lower heat-insulating layer 13. Therefore, after the exhaust steam is cooled, the exhaust steam is discharged into the sealed furnace shell 11 through the plurality of steam inlet pipelines 14, the heat-insulating layer 13 and the plurality of graphite crucibles 21 are cooled, the discharging process is accelerated, and the production efficiency is improved.
Continuing to refer to fig. 4, when the hot steam in the sealed furnace body 10 is recycled and the exhaust steam is cooled and recycled to the sealed furnace body 10 for cooling; the furnace also comprises a heat exchange cooling device and a vacuumizing device, wherein a high-temperature discharge pipe is arranged at the upper part of one side of the closed furnace body 10; this heat transfer cooling device includes: a heat exchanger 30; the high-temperature discharge pipe is connected with one side of the tube pass 34 of the heat exchanger 30, and the other side of the tube pass 34 of the heat exchanger 30 is connected with a vacuumizing device; the bottom of the heat exchanger 30 is provided with a cooling water supply pipe 31 communicated with the shell side of the heat exchanger 30, and the top of the heat exchanger 30 is provided with a heat rejection water pipe 32 communicated with the shell side of the heat exchanger 30. A normally closed exhaust valve 33 is provided on either side of the tube side 34 of the heat exchanger 30. In addition, the vacuum-pumping device adopts a Roots blower 40, the air suction end of the Roots blower 40 is connected with the tube pass 34 of the heat exchanger 30, the air discharge end of the Roots blower 40 is connected with a plurality of steam inlet pipelines 14 through a steam conveying pipe 41, and the steam conveying pipe 41 is provided with a switch valve 42. A gas discharge pipe 43 connected to the gas transmission pipe 41 is further included, and a valve 44 is provided on the gas discharge pipe 43.
In the above structure, it can be seen that, when the sealed furnace body 10 is in a sealed state after charging, the normally closed exhaust valve 33 is opened by starting the roots blower 40, and the nitrogen unit is started to inject nitrogen into the sealed furnace body 10, so that air in the sealed furnace body 10 is exhausted through the normally closed exhaust valve 33, and the sealed furnace body 10 is in a vacuum state. Then, closing the normally closed exhaust valve 33, electrifying to heat the plurality of graphite crucibles 21, arranging a safety valve on the furnace cover 12 in the heating smelting process, and removing pressure by the safety valve when the internal pressure of the closed furnace body 10 is overlarge; the vacuum smelting can effectively decompose and volatilize impurities in the battery cathode material. In the continuous heating process, the heat-insulating layer 13 volatilizes combustible gas, the switch valve 42 is closed, the valve 44 is opened, and the Roots blower 40 pumps the combustible gas to the fuel gas discharge pipe 43 for discharge and reuse. After smelting is finished, the heat-insulating layer 13 volatilizes dead steam with low flammability, the valve 44 is closed, the switch valve 42 is opened, and the dead steam is cooled and blown to the bottom of the closed furnace body 10 again; as shown in fig. 5, tube plates 35 are disposed at two ends of the interior of the heat exchanger 30, a plurality of tube passes 34 are connected between the tube plates 35 at the two ends, the tube plates 35 and the tube passes 34 are wrapped by the shell, and cooling water pumped by the cooling water pipes 31 is filled between the tube plates 35 at the two ends and the tube passes 34, so that heat of exhaust steam is effectively absorbed, and the exhaust steam is cooled after passing through the tube passes 34. The cooling water in the shell pass of the heat exchanger 30 is contacted with the high-temperature exhaust steam for heat exchange, then the temperature is raised, and the heated water medium is discharged to heating equipment in a factory through a heat discharging water pipe 32 for reuse. The cooled exhaust steam is discharged on the plurality of steam inlet pipelines 14, so that the temperature in the furnace can be quickly reduced to normal temperature, the discharging time is shortened, and the production efficiency is improved.
In addition, in order to prevent high-temperature burnout of the power supply connection, cooling water jackets 18 are provided at the connections between the two copper conductive bars 17 and the corresponding positive and negative conductive terminals 16A and 16B. The cooling water jacket 18 communicates with a cooling water supply pipe 31 through a circulation pipe.
In the invention, impurities are fully decomposed and evaporated by vacuum smelting of the battery cathode material; the arranged heat insulation layer 13 can ensure that the thermal field does not leak and prevent air from oxidizing the high-temperature graphite crucible 21; meanwhile, the cooling time is shortened through the arranged heat exchange cooling device, and the production efficiency is accelerated. And the heat energy and the waste gas generated in the smelting process are fully utilized, and the production cost is reduced.

Claims (10)

1. A purification and rapid cooling smelting furnace for producing battery negative electrode materials, which is characterized by comprising: the device comprises a closed furnace body, a conductive heating device and a heat exchange cooling device; wherein the content of the first and second substances,
the conductive heating device includes: a plurality of graphite crucibles which are arranged in sequence and are closely arranged, wherein any two adjacent graphite crucibles have conductivity;
the heat-insulating layer used for wrapping the graphite crucibles is arranged inside the closed furnace body, and a plurality of steam inlet pipelines are uniformly arranged at the bottom of the heat-insulating layer at the lower layer;
the device is characterized by further comprising a vacuumizing device connected with the closed furnace body, high-temperature gas in the closed furnace body is sent into the heat exchange cooling device through the vacuumizing device for cooling, and the low-temperature gas discharge end of the heat exchange cooling device is connected with the plurality of gas inlet pipelines.
2. The refining rapid cooling smelting furnace for producing battery negative electrode materials according to claim 1, characterized in that the closed furnace body comprises: sealing the furnace shell and the furnace cover; the top of the closed furnace shell is provided with an opening, and the furnace cover is detachably and fixedly connected with the closed furnace shell and seals the opening.
3. The refining rapid cooling smelting furnace for producing battery negative electrode materials according to claim 1, characterized in that a permeable sandstone layer is arranged between the plurality of steam inlet pipelines and the lower heat-insulating layer.
4. The refining rapid cooling smelting furnace for producing battery negative electrode material according to claim 2, wherein furnace heads electrically connected with the plurality of graphite crucibles are arranged at two ends of the inside of the closed furnace shell, the furnace heads at two ends are assembled with positive conductive ends and negative conductive ends in one-to-one correspondence, and the positive conductive ends and the negative conductive ends are connected with conductive copper bars extending to the outside of the closed furnace shell in correspondence.
5. The refining rapid cooling smelting furnace for producing battery negative electrode materials according to claim 4, characterized in that the joints between two copper busbar conductors and the corresponding positive electrode conducting end and the negative electrode conducting end are provided with cooling water jackets.
6. The refining rapid cooling smelting furnace for producing battery negative electrode materials according to claim 5, characterized in that a high temperature discharge pipe is arranged at the upper part of one side of the closed furnace body;
the heat exchange cooling device comprises: a heat exchanger; the high-temperature discharge pipe is connected with one side of the tube pass of the heat exchanger, and the other side of the tube pass of the heat exchanger is connected with the vacuumizing device; and the bottom of the heat exchanger is provided with a cooling water supply pipe communicated with the shell pass of the heat exchanger, and the top of the heat exchanger is provided with a heat discharge water pipe communicated with the shell pass of the heat exchanger.
7. A refining rapid cooling smelting furnace for producing battery negative electrode material according to claim 6, characterized in that any side of the tube side of the heat exchanger is provided with a normally closed exhaust valve.
8. The refining rapid cooling smelting furnace for producing battery negative electrode material according to claim 7, characterized in that the vacuum-pumping device comprises: a Roots blower; the air exhaust end of the Roots blower is connected with the tube side of the heat exchanger, and the air exhaust end of the Roots blower is connected with the multiple steam inlet pipelines through the steam delivery pipe.
9. The refining rapid cooling smelting furnace for producing battery negative electrode materials according to any one of claims 1 to 8, characterized in that the heat insulating layer is any one of petroleum coke and coal.
10. A refining rapid cooling smelting furnace for producing battery negative electrode material according to claim 8, characterized in that, a fuel gas discharging pipe is connected to the steam conveying pipe, and a valve is assembled on the fuel gas discharging pipe.
CN202010590694.4A 2020-06-24 2020-06-24 Purification and rapid cooling smelting furnace for producing battery negative electrode material Pending CN111707097A (en)

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CN202010590694.4A CN111707097A (en) 2020-06-24 2020-06-24 Purification and rapid cooling smelting furnace for producing battery negative electrode material

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251802A (en) * 2021-04-29 2021-08-13 湖南九华碳素高科有限公司 Graphitizing equipment for processing silicon-carbon negative electrode material of lithium ion battery
CN116659237A (en) * 2023-07-26 2023-08-29 淄博晶成新材料有限公司 Smelting kiln for producing alumina

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538456A (en) * 2012-01-18 2012-07-04 宁德市星宇科技有限公司 Rapid hardening furnace with cooling device
CN101709916B (en) * 2009-02-19 2014-04-02 姜洪金 Multi-functional environment-protection smelting furnace of low energy consumption silicon carbide (or other metal and nonmetal) and process
CN103964423A (en) * 2014-05-04 2014-08-06 郴州市三晶科贸有限公司 Production method of artificial graphite cathode materials in manner of inner tandem graphitization and graphitization furnace
WO2019052674A1 (en) * 2017-09-13 2019-03-21 Eisenmann Se Device and method for thermal or thermo-chemical treatment of material
KR101994380B1 (en) * 2017-12-01 2019-06-28 주식회사 포스코 Apparatus and method for heating secondary battery cathode material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101709916B (en) * 2009-02-19 2014-04-02 姜洪金 Multi-functional environment-protection smelting furnace of low energy consumption silicon carbide (or other metal and nonmetal) and process
CN102538456A (en) * 2012-01-18 2012-07-04 宁德市星宇科技有限公司 Rapid hardening furnace with cooling device
CN103964423A (en) * 2014-05-04 2014-08-06 郴州市三晶科贸有限公司 Production method of artificial graphite cathode materials in manner of inner tandem graphitization and graphitization furnace
WO2019052674A1 (en) * 2017-09-13 2019-03-21 Eisenmann Se Device and method for thermal or thermo-chemical treatment of material
KR101994380B1 (en) * 2017-12-01 2019-06-28 주식회사 포스코 Apparatus and method for heating secondary battery cathode material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251802A (en) * 2021-04-29 2021-08-13 湖南九华碳素高科有限公司 Graphitizing equipment for processing silicon-carbon negative electrode material of lithium ion battery
CN116659237A (en) * 2023-07-26 2023-08-29 淄博晶成新材料有限公司 Smelting kiln for producing alumina
CN116659237B (en) * 2023-07-26 2023-09-26 淄博晶成新材料有限公司 Smelting kiln for producing alumina

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Application publication date: 20200925