CN218380437U

CN218380437U - Graphitizing furnace

Info

Publication number: CN218380437U
Application number: CN202220107648.9U
Authority: CN
Inventors: 周大桥; 秦士栋
Original assignee: Henan Baili New Energy Material Co Ltd
Current assignee: Henan Baili New Energy Material Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2023-01-24
Anticipated expiration: 2032-01-14

Abstract

The utility model belongs to the technical field of graphitizing furnace, especially, relate to a graphitizing furnace, including the graphitizing furnace body, this internal first graphite baffle of multilayer is equipped with in proper order after to in the past of graphitizing furnace, be equipped with multilayer second graphite baffle from a left side to the right side in proper order, first graphite baffle and second graphite baffle divide into a plurality of rooms of placing with graphitizing furnace body is inside, every is placed indoor and is corresponded and be equipped with an electrode bar, the top of electrode bar is connected with electrode bar conductive electrode, the bottom is connected with electrode bar conductive electrode down, go up electrode bar conductive electrode and electrode bar conductive electrode down inside all is equipped with the connecting hole, it is connected with the blast pipe to go up electrode bar conductive electrode top, electrode bar conductive electrode bottom is connected with the intake pipe down, the blast pipe is kept away from and is connected with the heat exchanger to electrode bar conductive electrode end. The utility model discloses simple structure, convenient operation can heat or cool down rapidly to the negative electrode material, and the negative electrode material is heated evenly, and production efficiency is high.

Description

Graphitizing furnace

Technical Field

The utility model belongs to the technical field of graphitizing furnace, especially, graphitizing furnace.

Background

The graphite has the excellent characteristics of good conductivity, high crystallinity, two-dimensional layered structure and the like, is very suitable for embedding and separating Li ions, has small expansion coefficient and high safety in the charging and discharging processes of the battery, so that the graphite lithium battery cathode material is widely researched, popularized and applied, mainly comprises natural graphite, artificial graphite and composite graphite at present, and three types of graphite lithium battery cathode materials, and has the excellent performances of high specific discharge capacity, excellent cycle performance, excellent first-time charging and discharging performance, outstanding safety performance, stable and controllable quality and the like, and the usage ratio of the lithium battery cathode material is up to more than 90%. After the graphite negative electrode material is subjected to preliminary treatment such as jet milling, spheroidization, surface coating treatment, carbonization and the like to obtain a semi-finished product with a standard body and particle size distribution, the semi-finished product is subjected to high-temperature heat treatment at a temperature of more than 2800 ℃ in a special graphitizing furnace, so that the electrochemical properties such as capacity, multiplying power, cycle performance and the like of the graphite negative electrode material are in an ideal state.

The current graphitizing furnace uses furnace end electrode and coke to heat the material, but the material filling space is too big, and middle part material distance is far away, leads to the material uniformity of being heated not good to and the lower longer production efficiency scheduling problem that influences of cooling time that leads to of heat dissipation rate when cooling down.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

a graphitization furnace comprises a graphitization furnace body, wherein a heat preservation layer and a coke layer are sequentially arranged in the graphitization furnace body from outside to inside, and a plurality of layers of first graphite clapboards are sequentially arranged in the graphitization furnace body from front to back, a plurality of layers of second graphite clapboards are sequentially arranged from left to right, the first graphite baffle and the second graphite baffle divide the interior of the graphitization furnace body into a plurality of placing chambers, each placing chamber is internally provided with an electrode bar correspondingly, the first graphite plate is provided with a gasket mounting hole, a graphite gasket is arranged in the gasket mounting hole, the top end and the bottom of the graphite gasket are both connected with the electrode bar, and the graphite gasket is internally provided with a gasket hole, the electrode bar is internally provided with a vent hole, the top end of the graphitization furnace body is provided with a plurality of upper electrode bar conductive electrodes, the bottom end is provided with a plurality of lower electrode bar conductive electrodes, the top end of the upper electrode bar conductive electrode is connected with an exhaust pipe, the bottom of the upper electrode bar conductive electrode is connected with a graphite gasket, the top end of the lower electrode bar conductive electrode is connected with the graphite gasket, the bottom end of the lower electrode bar conductive electrode is connected with an air inlet pipe, the conductive electrodes of the upper electrode bar and the lower electrode bar are both internally provided with connecting holes, the connecting holes and the gasket holes are both communicated with the vent holes, the end of the exhaust pipe far away from the conductive electrode of the upper electrode bar is connected with a heat exchanger, the end of the air inlet pipe far away from the conductive electrode of the lower electrode bar is connected with a fan, the air inlet end of the fan is connected with the heat exchanger through a pipeline, the air inlet end of the fan is connected with a nitrogen storage tank through a pipeline, the top end and the bottom of the graphitization furnace body are both provided with a plurality of coke conductive electrodes, one end of the coke conductive electrode is connected with the coke layer, the other end is connected with a power supply through a lead, the upper electrode bar conductive electrode and the lower electrode bar conductive electrode are both connected with a power supply through leads.

Preferably, be equipped with the graphite clamping bar between adjacent first graphite baffle and second graphite baffle, the graphite clamping bar includes graphite clamping bar body, all be equipped with on every face of graphite clamping bar body and press from both sides tight groove, press from both sides tight groove and first graphite baffle and second graphite baffle phase-match, make first graphite baffle and second graphite baffle connect more firmly through the graphite clamping bar.

The utility model discloses still including other subassemblies that can make this graphitizing furnace normal use, be the conventional technical means in this field. In addition, the device or the component which is not limited in the utility model adopts the conventional technical means in the field.

The utility model discloses during the use, put into the placing chamber with negative electrode material, through coke conductive electrode, go up electrode bar conductive electrode and lower electrode bar conductive electrode, it switches on to coke layer and electrode bar, coke layer and electrode bar produce heat and heat negative electrode material, make the negative electrode material graphitization, when needing to cool down, let in nitrogen gas through nitrogen gas storage tank in to lower electrode bar conductive electrode and the electrode bar, nitrogen gas cools down negative electrode material, nitrogen gas gets into the heat exchanger from last electrode bar conductive electrode and cools down, nitrogen gas after the cooling cools down to negative electrode material in getting into the electrode bar again.

The beneficial effects of the utility model are that, simple structure, convenient operation can heat or cool down rapidly to the negative electrode material, and the negative electrode material is heated evenly, and production efficiency is high.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a plan view of the present invention.

Detailed Description

The present invention will be described more clearly with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the description herein is only for explaining the present invention, but not for limiting the present invention. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by those skilled in the art without making creative efforts shall be included in the protection scope of the present invention.

Examples

As shown in figure 1, a graphitization furnace comprises a graphitization furnace body 1, wherein a heat preservation layer 2 and a coke layer 3 are sequentially arranged in the graphitization furnace body 1 from outside to inside, a plurality of layers of first graphite partition plates 14 are sequentially arranged in the graphitization furnace body 1 from front to back, a plurality of layers of second graphite partition plates 4 are sequentially arranged from left to right, the first graphite partition plates 14 and the second graphite partition plates 4 divide the interior of the graphitization furnace body 1 into a plurality of placing chambers 5, an electrode rod 6 is correspondingly arranged in each placing chamber 5, gasket mounting holes are formed in the first graphite plates 14, graphite gaskets 12 are arranged in the gasket mounting holes, the top ends and the bottom ends of the graphite gaskets 12 are connected with the electrode rods 6, gasket holes are formed in the graphite gaskets 12, vent holes are formed in the electrode rods 6, and a plurality of upper electrode rod conductive electrodes 13 are arranged at the top end of the graphitization furnace body 1, the bottom end of the graphitizing furnace body is provided with a plurality of lower electrode bar conductive electrodes 8, the top end of the upper electrode bar conductive electrode 13 is connected with an exhaust pipe, the bottom of the upper electrode bar conductive electrode 13 is connected with a graphite gasket 12, the top end of the lower electrode bar conductive electrode 8 is connected with the graphite gasket 12, the bottom end of the lower electrode bar conductive electrode is connected with an air inlet pipe, the upper electrode bar conductive electrode 13 and the lower electrode bar conductive electrode 8 are both internally provided with connecting holes, the connecting holes and the gasket holes are both communicated with vent holes, the end of the exhaust pipe far away from the upper electrode bar conductive electrode 13 is connected with a heat exchanger 10, the end of the air inlet pipe far away from the lower electrode bar conductive electrode 8 is connected with a fan 9, the air inlet end of the fan 9 is connected with the heat exchanger 10 through a pipeline, the air inlet end of the fan 9 is connected with a nitrogen storage tank (not shown in the figure) through a pipeline, and the top end and the bottom of the graphitizing furnace body 1 are both provided with a plurality of coke conductive electrodes 7, one end of the coke conductive electrode 7 is connected with the coke layer 2, the other end is connected with a power supply (not shown in the figure) through a lead, and the upper electrode bar conductive electrode 13 and the lower electrode bar conductive electrode 8 are both connected with the power supply through leads.

Be equipped with graphite clamping bar 11 between adjacent first graphite baffle 14 and second graphite baffle 4, graphite clamping bar 11 includes graphite clamping bar body, all be equipped with on every face of graphite clamping bar body and press from both sides tight groove, press from both sides tight groove and

first graphite baffle

14 and 4 phase-matchs of second graphite baffle, make first graphite baffle 14 and second graphite baffle connect more firmly through graphite clamping bar 11.

The utility model discloses during the use, put into placing chamber 5 with cathode material in, through coke conductive electrode 7, go up electrode bar conductive electrode 13 and electrode bar conductive electrode 8 down, it switches on to coke layer 2 and electrode bar 6, coke layer 3 and electrode bar 6 produce heat and heat cathode material, make the cathode material graphitization, when needing to cool down, let in nitrogen gas in electrode bar conductive electrode 8 and the electrode bar 6 down through the nitrogen gas storage tank, nitrogen gas cools down cathode material, nitrogen gas gets into heat exchanger 10 from last electrode bar conductive electrode 13 and cools down, nitrogen gas after the cooling gets into the cathode material again in the electrode bar 6 and cools down.

The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims

1. The utility model provides a graphitizing furnace, includes the graphitizing furnace body, its characterized in that: the utility model discloses a graphite heat exchanger, including graphitizing furnace body, graphite furnace bottom, heat preservation and coke layer, this internal heat preservation and coke layer of following outward to interior being equipped with in proper order of graphitizing furnace, and this internal first graphite baffle of multilayer is equipped with multilayer second graphite baffle in proper order to the right side from a left side in the past in the graphitizing furnace, first graphite baffle and second graphite baffle divide into a plurality of placing chambers with graphitizing furnace body inside, every placing chamber correspondence is equipped with an electrode rod, be equipped with the gasket mounting hole on the first graphite board, be equipped with graphite gasket in the gasket mounting hole, graphite gasket's top and bottom all are connected with the electrode rod, and be equipped with a plurality of last electrode rod conductive electrode on the graphite furnace body top, the bottom is equipped with a plurality of down electrode rod conductive electrode, go up electrode rod conductive electrode top and be connected with the blast pipe, the bottom is connected with graphite gasket, down electrode rod conductive electrode top is connected with the intake pipe, the bottom is connected with the intake pipe, go up electrode rod conductive electrode rod and the inside connecting hole that all is equipped with of lower electrode rod conductive electrode, connecting hole and gasket hole all are linked together with the blast pipe, the blast pipe is kept away from electrode rod conductive electrode rod end, the heat exchanger bottom is connected with the conductive electrode layer, the heat exchanger body is connected with the fan through the conductive electrode layer, the heat exchanger bottom is connected with the conductive electrode rod, the heat exchanger body is connected with the fan, the heat exchanger bottom of the conductive electrode rod, the heat exchanger body is connected with the fan through the fan, the conductive electrode rod and the fan, the fan is connected with the fan bottom of the conductive electrode rod.

2. The graphitization furnace as claimed in claim 1, wherein: be equipped with the graphite clamping bar between adjacent first graphite baffle and second graphite baffle, the graphite clamping bar includes graphite clamping bar body, all be equipped with on every face of graphite clamping bar body and press from both sides tight groove, press from both sides tight groove and first graphite baffle and second graphite baffle phase-match.