CN214620692U

CN214620692U - Lithium battery negative electrode material production furnace with heat preservation of carbon aerogel

Info

Publication number: CN214620692U
Application number: CN202120579721.8U
Authority: CN
Inventors: 张良
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-05
Anticipated expiration: 2031-03-22

Abstract

The utility model relates to the technical field of continuous graphitizing furnaces, in particular to a furnace for producing lithium battery cathode materials by using carbon aerogel for heat preservation, which comprises a bottom plate (1), a furnace shell (2), a furnace wall lining (3) and a furnace top lining (7), wherein the furnace shell (2) is fixedly installed on the top end surface of the bottom plate (1), and a base (10) is installed at the bottom of the inner wall of the furnace shell (2); the furnace wall lining (3) is installed to the inner wall of furnace outer shell (2), furnace roof inside lining (7) is installed at the top of furnace outer shell (2) inner wall, the top fixed connection of the bottom of furnace roof inside lining (7) and furnace wall inside lining (3), straight chamber groove (4) have been seted up to furnace wall inside lining (3), a plurality of first convection cell (5) have been seted up to a lateral wall inside straight chamber groove (4), arc chamber groove (8) have been seted up to the inside of furnace roof inside lining (7), a plurality of second convection cell (9) have been seted up to the bottom of furnace roof inside lining (7).

Description

Lithium battery negative electrode material production furnace with heat preservation of carbon aerogel

Technical Field

The utility model relates to a continuous graphitizing furnace technical field specifically is a lithium cell negative electrode material production stove with thermal-insulated of charcoal aerogel.

Background

The continuous graphitizing furnace is a furnace for producing graphitized products in a continuous output mode, and is an advanced production electric carbon product device, at present, along with the development of anthracite graphitizing technology, the required graphitizing temperature is generally higher than 2000 ℃, even reaches more than 2500 ℃, whether the graphitizing furnace can continuously and normally operate at such high temperature is determined by the material and the structure of the furnace body lining, but the existing furnace for producing lithium battery cathode materials with 3000 ℃ by using carbon aerogel for heat preservation has many problems or defects;

the existing furnace for producing the negative electrode material of the lithium battery usually uses a high-aluminum refractory material and an alumina hollow ball material as protective linings, and the temperature resistance of the furnace is poor; the furnace is easy to damage during use, the service life is influenced, the maintenance cost is high, the maintenance amount is large, and the production capacity of the furnace is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a produce stove with thermal-insulated lithium cell cathode material of charcoal aerogel through setting up oven inside lining, straight chamber groove, furnace roof inside lining and arc chamber groove to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a furnace for producing lithium battery cathode materials by using carbon aerogel for heat preservation comprises a bottom plate, a furnace shell, a furnace wall lining and a furnace top lining, wherein the furnace shell is fixedly installed on the top end face of the bottom plate, and a base is installed at the bottom of the inner wall of the furnace shell.

The furnace wall lining is installed on the inner wall of the furnace outer shell, the furnace top lining is installed on the top of the inner wall of the furnace outer shell, the bottom end of the furnace top lining is fixedly connected with the top of the furnace wall lining, a straight cavity groove is formed in the furnace wall lining, a plurality of first convection grooves are formed in one side wall of the straight cavity groove, an arc cavity groove is formed in the furnace top lining, and a plurality of second convection grooves are formed in the bottom of the furnace top lining.

Preferably, the four corners of the bottom end face of the bottom plate are provided with supporting legs, and the bottom ends of the four supporting legs are provided with cushion blocks.

In order to improve the oxidation resistance of the furnace wall, preferably, the furnace wall lining and the outer wall of the first convection groove are both coated with an oxidation resistant coating, the oxidation resistant coating is in contact with the inner wall of the furnace shell, and the oxidation resistant coating is a silicon carbide oxidation resistant agent coating.

In order to improve the safety of the furnace, preferably, the furnace wall lining and the furnace top lining are carbon aerogel blocks, and inert gases are filled in the straight cavity groove and the arc cavity groove.

In order to facilitate the charging of the materials, preferably, the top of the furnace shell is fixedly provided with a feed hopper in a penetrating way, extends to the inner wall of the furnace shell and penetrates through the top of the furnace top lining.

In order to facilitate the taking out of the materials, preferably, one side of the furnace shell is hinged with a furnace door, and a handle is installed on the furnace door.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses under the mutually supporting of oven inside lining and furnace roof inside lining, replace high-alumina refractory material and alumina hollow ball material through the charcoal aerogel filler block, the temperature toleration of stove has effectively been improved, solved current lithium cell negative pole material production stove and used high-alumina refractory material and alumina hollow ball material as the protection inside lining usually, its temperature toleration is relatively poor problem;

(2) the utility model discloses the structure is ingenious, through setting up straight chamber groove, first convection current groove, arc chamber groove and second convection current groove, can effectively prolong graphitizing furnace life-span, saves furnace body maintenance cost, has reduced maintenance number of times and further increase negative pole material production capacity.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a schematic cross-sectional view of the furnace top liner of the present invention.

In the figure: 1. a base plate; 2. a furnace housing; 3. furnace wall lining; 4. a straight cavity groove; 5. a first convection slot; 6. an oxidation resistant coating; 7. a furnace roof lining; 8. an arc cavity groove; 9. a second convection slot; 10. a base; 11. a feed hopper; 12. a support leg; 13. a furnace door; 14. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1 and 3, a furnace for producing a lithium battery cathode material by using carbon aerogel for heat preservation comprises a bottom plate 1, a furnace shell 2, a furnace wall lining 3 and a furnace top lining 7, wherein the top end surface of the bottom plate 1 is fixedly provided with the furnace shell 2, and the bottom of the inner wall of the furnace shell 2 is provided with a base 10.

The furnace wall inner lining 3 is installed on the inner wall of the furnace outer shell 2, the furnace top inner lining 7 is installed on the top of the inner wall of the furnace outer shell 2, the bottom end of the furnace top inner lining 7 is fixedly connected with the top of the furnace wall inner lining 3, the straight cavity groove 4 is formed in the furnace wall inner lining 3, the first alignment grooves 5 are formed in one side wall of the straight cavity groove 4, the arc cavity groove 8 is formed in the furnace top inner lining 7, and the second alignment grooves 9 are formed in the bottom of the furnace top inner lining 7.

Example two:

a production furnace for lithium battery cathode materials with heat preservation by using carbon aerogel comprises a bottom plate 1, a furnace outer shell 2, a furnace wall lining 3 and a furnace top lining 7, wherein the furnace outer shell 2 is fixedly installed on the top end face of the bottom plate 1, supporting legs 12 are installed at four corners of the bottom end face of the bottom plate 1, cushion blocks are installed at the bottom ends of the four supporting legs 12, the stability of the whole furnace can be ensured through the supporting legs 12, and a base 10 is installed at the bottom of the inner wall of the furnace outer shell 2.

The inner wall of the furnace shell 2 is provided with a furnace wall lining 3, the top of the furnace shell 2 is fixedly provided with a feed hopper 11 in a penetrating way, the feed hopper extends to the inner wall of the furnace shell 2 and penetrates through the top of a furnace top lining 7, raw materials can be added conveniently through the feed hopper 11, one side of the furnace shell 2 corresponding to the furnace door 13 is hinged with a furnace door 13, a handle 14 is arranged on the furnace door 13, a fired product can be taken out conveniently through the furnace door 13 and the handle 14, the top of the inner wall of the furnace shell 2 is provided with the furnace top lining 7, the bottom end of the furnace top lining 7 is fixedly connected with the top of the furnace wall lining 3, the furnace wall lining 3 and the furnace top lining 7 are both carbon aerogel blocks, inert gases are filled in a straight cavity groove 4 and an arc cavity groove 8, the temperature resistance can be improved through the furnace wall lining 3 and the furnace top lining 7, a straight cavity groove 4 is formed in the furnace wall, a plurality of first pair flow grooves 5 are formed in one side wall in the straight cavity groove 4, the outer walls of the furnace wall lining 3 and the first convection groove 5 are coated with an anti-oxidation coating 6, the anti-oxidation coating 6 is in contact with the inner wall of the furnace shell 2, the anti-oxidation coating 6 is a silicon carbide anti-oxidant coating, further diffusion of oxygen can be prevented through the anti-oxidation coating 6, the service life of a lining material is prolonged, an arc cavity groove 8 is formed in the furnace top lining 7, a plurality of second convection grooves 9 are formed in the bottom of the furnace top lining 7, a carbon aerogel lining block is used for replacing a high-aluminum refractory material and an aluminum oxide hollow ball material, the temperature resistance of the furnace is effectively improved, and the problem that the temperature resistance of an existing furnace for producing a lithium battery cathode material is poor due to the fact that the high-aluminum refractory material and the aluminum oxide hollow ball material are used as a protective lining.

The working principle is as follows: the electric elements in the application are externally connected with a power supply and a control switch when in use, raw materials are put in through a feed hopper 11 and then are fired, when the temperature in a furnace shell 2 is gradually increased, heat is transferred to the inner surfaces of a furnace wall lining 3 and a furnace top lining 7, the molecular flow speed of inert gas in the furnace wall lining 3 and the furnace top lining 7 is accelerated due to the temperature, when the heat enters a straight cavity groove 4, the inert gas in the straight cavity groove 4 starts to accelerate the molecular movement speed by arranging a plurality of first convection grooves 5 in the furnace wall lining 3, a certain degree of convection can be formed, the flow speed of the inert gas in the straight cavity groove 4 is effectively slowed down, and further diffusion of oxygen is prevented through an oxidation resistant coating 6, thereby effectively protecting the furnace wall, in the furnace top lining 7, because the furnace top lining 7 is positioned at the furnace top, the air flow around the furnace top lining is large, the air flow can be slowed down by arranging a plurality of second convection grooves 9 at the bottom of the furnace top lining 7, and the arc-shaped cavity grooves 8 can form separation to heat, so that the heat is reduced to be transferred to the surface of the furnace shell 2, and under the joint cooperation of the oxidation-resistant coating 6, the furnace is integrally formed into an effective heat preservation and protection structure.

It is well within the skill of those in the art to implement, without undue experimentation, the present invention does not relate to software and process improvements, as related to the circuit and electronic components and control modules.

In the description of the present invention, it is to be understood that the terms "center", "middle", "eccentric", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an use thermal-insulated lithium cell cathode material production stove of charcoal aerogel which characterized in that: the furnace comprises a bottom plate (1), a furnace shell (2), a furnace wall lining (3) and a furnace top lining (7), wherein the furnace shell (2) is fixedly installed on the top end surface of the bottom plate (1), and a base (10) is installed at the bottom of the inner wall of the furnace shell (2);

the furnace wall lining (3) is installed to the inner wall of furnace outer shell (2), furnace roof inside lining (7) is installed at the top of furnace outer shell (2) inner wall, the top fixed connection of the bottom of furnace roof inside lining (7) and furnace wall inside lining (3), straight chamber groove (4) have been seted up to furnace wall inside lining (3), a plurality of first convection cell (5) have been seted up to a lateral wall inside straight chamber groove (4), arc chamber groove (8) have been seted up to the inside of furnace roof inside lining (7), a plurality of second convection cell (9) have been seted up to the bottom of furnace roof inside lining (7).

2. The furnace for producing a lithium battery negative electrode material insulated with carbon aerogel according to claim 1, wherein: landing leg (12) are all installed in the four corners department of bottom surface of bottom plate (1), four the cushion is all installed to the bottom of landing leg (12).

3. The furnace for producing a lithium battery negative electrode material insulated with carbon aerogel according to claim 1, wherein: the furnace wall lining (3) and the outer walls of the first convection groove (5) are coated with anti-oxidation coatings (6), the anti-oxidation coatings (6) are in contact with the inner wall of the furnace shell (2), and the anti-oxidation coatings (6) are silicon carbide anti-oxidant coatings.

4. The furnace for producing a lithium battery negative electrode material insulated with carbon aerogel according to claim 1, wherein: the furnace wall lining (3) and the furnace top lining (7) are all carbon aerogel blocks.

5. The furnace for producing a lithium battery negative electrode material insulated with carbon aerogel according to claim 1, wherein: the top of the furnace outer shell (2) is fixedly provided with a feed hopper (11) in a penetrating way, extends to the inner wall of the furnace outer shell (2) and penetrates through the top of the furnace top lining (7).

6. The furnace for producing a lithium battery negative electrode material insulated with carbon aerogel according to claim 1, wherein: one side corresponding to the furnace shell (2) is hinged with a furnace door (13), and a handle (14) is installed on the furnace door (13).