CN209672827U - Electric smelting furnace - Google Patents

Abstract

The utility model provides a kind of electric smelting furnace, including fixed furnace body, smelt furnace body and conductive electrode, the smelting furnace body is placed in the stationary furnace body, the conductive electrode is stretched out from the smelting furnace body and stationary furnace body and is connected to external power supply, it is characterized in that, the smelting furnace body is made of graphite brick.Electric smelting furnace provided by the utility model, it encloses to set and constitute using graphite brick and smelts furnace body, graphite brick self component will not interfere the calcining of graphite raw material to smelt, new impurity will not be introduced, the intensity and heat resistance of furnace body are also relatively preferable, to improve the preparation quality and production capacity of electric smelting furnace, there is widely application prospect.

Description

Electric smelting furnace

Technical field

The utility model relates to material technical field of smelting more particularly to a kind of electric smelting furnaces.

Background technique

Electric smelting furnace smelts and prepares material as the supply energy by electric energy, has in engineering fields such as material, chemical industry It is widely used.For being graphitized electric smelting, current graphitization electric smelting furnace is often through setting crucible or carbon slab Cabinet realizes the baking and calcining of target material, and there is only energy consumptions, and high, charcoal damages big problem, be also unable to satisfy in production capacity The market demand.

Utility model content

In view of this, it is necessary to provide a kind of improved electric smelting furnace, low energy consumption for the electric smelting furnace, production capacity is high.

The utility model provides a kind of electric smelting furnace, including fixed furnace body, smelting furnace body and conductive electrode, the smelting furnace Body is placed in the stationary furnace body, and the conductive electrode is stretched out from the smelting furnace body and stationary furnace body and and external power supply Connection, the smelting furnace body are built by the horizontal brick of muti-piece graphite and muti-piece graphite stretcher.

Further, it is provided with wedge nail on the smelting furnace body, passes through wedge nail phase between two adjacent graphite bricks Mutually it is embedded and forms joinery and its construction.

Further, drainage core is provided in the smelting furnace body.

Further, drainage core support is further fixedly arranged in the smelting furnace body, the drainage core is set to described draw It flows in core support.

Further, the electric smelting furnace includes Graphite pad, the Graphite pad be set to the drainage core with it is described It drains between core support.

Further, insulating layer is provided between the fixed furnace body and the smelting furnace body.

Further, the insulating layer includes bottom insulating layer, side insulating layer and top insulating layer, the bottom heat preservation Layer with a thickness of 400 to 600 millimeters, the side insulating layer with a thickness of 200 to 400 millimeters, the thickness of the top insulating layer Degree is 600 to 800 millimeters.

Further, the outside of the fixed furnace body is provided with support frame, and support frame as described above is used to support the stationary furnace Body.

Further, support frame as described above is triangular support bracket.

Further, support frame as described above is cast iron support frame.

Electric smelting furnace provided by the utility model encloses using the horizontal brick of muti-piece graphite and muti-piece graphite stretcher and sets and constitute smelting Furnace body, graphite brick self component will not interfere the calcining of graphite raw material to smelt, will not introduce new impurity, the furnace body being in any case distributed Intensity is also relatively high, and the preparation quality and production capacity of electric smelting furnace are promoted, and is with a wide range of applications.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of electric smelting furnace in one embodiment of the utility model；

Fig. 2 is structural schematic diagram of the electric smelting furnace under the first side view visual angle shown in Fig. 1；

Fig. 3 is structural schematic diagram of the electric smelting furnace under the second side view visual angle shown in Fig. 1；

Fig. 4 is the structural schematic diagram that furnace body is smelted in one embodiment of the utility model.

Main element symbol description

The following detailed description will be further explained with reference to the above drawings the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that it can be installed directly in another group when component is referred to as " being installed in " another component On part or there may also be components placed in the middle.When a component is considered as " being set to " another component, it be can be directly It connects and is arranged on another component or may be simultaneously present component placed in the middle.When a component be considered as " being fixed on " another Component, it, which can be, is directly anchored on another component or may be simultaneously present component placed in the middle.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include Any and all combinations of one or more related listed items.

It please referring to Fig.1 to Fig.3, Fig. 1 is the structural schematic diagram of electric smelting furnace 100 in one embodiment of the utility model, Fig. 2 is structural schematic diagram of the electric smelting furnace 100 under the first side view visual angle shown in Fig. 1, and Fig. 3 is that electric smelting furnace 100 shown in Fig. 1 exists Structural schematic diagram under second side view visual angle.

Electric smelting furnace 100 is connected with external power supply (not shown) for smelting and preparing material and utilizes electric current Fuel factor carrys out calcining starting material, has widely application prospect in material and chemical field.

In present embodiment, electric smelting furnace 100 be graphitizing furnace, prepared using " Acheson " graphite production as The graphite of lithium ion battery negative material.It is appreciated that in other implementations, electric smelting furnace 100 is also used as refining The other kinds of smelting furnace such as steel stove, iron-smelting furnace uses namely electric smelting furnace 100 can also smelt and prepare steel, iron etc. other The material of type, as long as this kind of material is able to use electric smelting furnace 100 provided by the utility model.

Electric smelting furnace 100 includes fixed furnace body 10, smelts furnace body 20 and conductive electrode 30, smelts furnace body 20 and is set to fixation The inside of furnace body 10.One end of conductive electrode 30, which is protruded into, to smelt inside furnace body 20, and the other end, which stretches out, to be smelted furnace body 20 and be connected to outer Portion's power supply.

Fixed furnace body 10, which is used to completely cut off, smelts furnace body 20, so that smelting furnace body 20 and outside under energization calcined state It is environmentally isolated, smelts furnace body 20 to protect；Furnace body 20 is smelted for accommodating and smelting graphite raw material, is used as dinectly bruning furnace The reacting environment of graphite preparation is provided；Conductive electrode 30 is for being connected to external power supply, thus for calcining supply energy.

Furnace body 20 is smelted under the fixed function of fixed furnace body 10 and the electric action of conductive electrode 30, utilizes the heat of electric current Effect heating is located at the graphite raw material of therein, is prepared by modes such as calcining bakings and meets negative electrode of lithium ion battery characteristic It is required that graphite material, to complete the smelting preparation process of graphite material.

Fixed furnace body 10, which encloses to set, smelts furnace body 20, and inner hollow smelts furnace body 20 to accommodate.In present embodiment, in order to Convenient for the placement of fixed furnace body 10 on the ground, fixed furnace body 10 substantially cabinet can be using the cabinet knot of six faces sealing Opening can also be arranged using the body structure of part sealing in top surface in structure.It is appreciated that in other implementations, Fixed furnace body 10 can also be using the other shapes in addition to cabinet such as spheroidal, elliposoidal, as long as fixed furnace body 10 can be consolidated Furnace body 20 is smelted in fixed and accommodating.

In present embodiment, it is contemplated that refractory brick has preferable high temperature resistance and cost advantage more outstanding, Gu Determine furnace body 10 and enclosed by the wall that refractory brick is built into set.Certainly, in other implementations, fixed furnace body 10 can also be adopted It is enclosed and is set with the other materials in addition to refractory brick.

The inside that furnace body 20 is placed in fixed furnace body 10 is smelted, inner hollow is to accommodate graphite raw material.Present embodiment In, in order to match the box shape of fixed furnace body 10, smelts furnace body 20 and also use body structure, smelting furnace body 20 at this time can be steady Admittedly the inside of fixed furnace body 10 is set.Certainly, smelting furnace body 20 can also be using spherical shape, elliposoidal etc. in addition to cabinet Other shapes.

Conductive electrode 30 runs through fixed furnace body 10 and smelts furnace body 20, and protrudes into the inside for smelting furnace body 20, conductive electricity Pole 30 and external power supply are connected to and constitute together with graphite raw material electrical circuit, graphite raw material as a part in electrical circuit, when When circuit is connected, graphite raw material generates heat under the action of heating effect of current calcines and is prepared to composite lithium ion battery cathode spy Property require graphite material, to complete the preparation process of material.

In actual use, conductive electrode 30 often be more, more conductive electrodes 30 be spaced apart from each other with it is arranged in parallel, often Two conductive electrodes 30 are oppositely arranged, and graphite raw material is located between two opposite conductive electrodes 30 to constitute electrical circuit；Setting A fairly large number of conductive electrode 30 helps to improve production capacity.

In present embodiment, the quantity of conductive electrode 30 is 30 six roots of sensation.Certainly, in other implementations, conductive Electrode 30 using in addition to 36 other quantity also can, as long as the conductive electrode 30 can be realized electric energy conduction.

In present embodiment, conductive electrode 30 is the cylindrical graphite electrode once roasted, is helped using graphite electrode In the purity for improving the graphite material prepared, it can be avoided introducing introduced contaminants；The diameter of conductive electrode 30 preferably 150- 200 millimeters, preferably 1500-2000 millimeters of length.Certainly, conductive electrode 30 can also use other kinds of electrode, diameter and Length can be selected according to actual working condition requirement.

Electric smelting furnace 100 provided by the utility model avoids to improve the purity of smelting and the graphite material prepared It smelts the effects of passing through diffusion with introduced contaminants in preparation process to be doped into graphite raw material, is enclosed using graphite brick and set and constitute smelting Furnace body 20.It is made of due to smelting furnace body 20 graphite brick 21, the graphite content of graphite brick 21 itself will not interfere graphite raw material Calcining smelt, new impurity will not be introduced, help to improve the quality for the graphite material prepared；In addition, graphite brick 21 The intensity of body is higher, and heat resistance is also relatively preferable, therefore helps to improve the efficiency and production capacity of smelting.

Additional description is needed, graphite brick 21 used by furnace body 20 is smelted, can be both built by muti-piece graphite brick 21, It can also be integrally formed by the wall of 21 material of graphite brick；Namely smelt what furnace body 20 can be both built into using muti-piece graphite brick 21 Separate structure can also use the integrally formed overall structure of 21 wall of graphite brick.

Referring to Figure 4 together, Fig. 4 is the structural schematic diagram that furnace body 20 is smelted in one embodiment of the utility model.In In one embodiment of the utility model, smelts furnace body 20 and be built by muti-piece graphite brick 21 using the in any case plum blossom method of building a wall, adopted The smelting furnace body 20 being built into the in any case plum blossom method of building a wall preferably, is not susceptible to deform and collapse, be able to ascend in structural strength Smelt the structural integrity of furnace body 20.Specifically, smelting furnace body 20 by the horizontal brick 211 of muti-piece graphite and muti-piece graphite stretcher 212 It builds.

It should be noted that the in any case plum blossom method of building a wall mentioned here refer to each layer of wall by being in any case distributed, different pendulum The brick body distribution method that the brick body of set direction is successively built into, the graphite brick that long side is parallel to metope masonry is graphite stretcher 212, long While perpendicular to metope build graphite brick be the horizontal brick 211 of graphite, in any case plum blossom build a wall method laid in each layer of wall in any case according to The horizontal brick and stretcher of minor tick, horizontal brick and stretcher between adjacent layer are also spaced apart from each other, to improve the structure for smelting furnace body 20 Consistency.

In the present embodiment, in each layer of wall the broadside of outer brick body outwardly, and the long side of inner brick body with it is inner The broadside of brick body is opposite to be contacted, and is in any case distributed with being formed.Certainly, smelt furnace body 20 using other masonry way also can, as long as Smelting in furnace body 20 has the horizontal brick 211 of graphite and graphite stretcher 212.

In an embodiment of the utility model, it is provided with wedge nail 22 between adjacent graphite brick 21 and forms Tenon It is mutually embedded between structure namely two adjacent graphite bricks 21 by wedge nail 22, wedge nail 22 is embedded two or more stones simultaneously Black brick 21, to form the fixation to graphite brick 21.Since joinery and its construction is easy for installation, structural strength is preferable, therefore smelting furnace Body 20 can obtain more preferably reliability and stability using wedge nail 22 and after forming joinery and its construction.

Further, the preferably graphite wedge nail of wedge nail 22, wedge nail 22 will not introduce introduced contaminants at this time, help to improve The purity for the graphite material prepared.Certainly, if not considering the influence to graphite material purity, wedge nail 22 is using in addition to graphite Other materials.

In an embodiment of the utility model, smelts the hollow furnace interior of furnace body 20 and is provided with drainage core 23, Drainage core 23 is made of carbon materials roasting product (such as carbon block).When graphite raw material accommodates and be filled in the inside of smelting furnace body 20 When, drainage core 23 can be contacted with graphite raw material and the current distribution on uniform graphite raw material, and smelting furnace body 20 is existed Meet quality requirements while preparing larger smelting amount, helps to improve the yield of the material preparation of electric smelting furnace 100.

In present embodiment, drainage core 23 is cylinder, to improve the contact area with graphite raw material；In order to improve uniformly The efficiency of electric current, the quantity of drainage core 23 are set as multiple, and the cloth set direction of multiple drainage cores 23 and conductive electrode 30 mutually hangs down Directly, homogenized efficiency is drained to improve.

It is appreciated that in other implementations, drainage core 23 can also be using other shapes such as prismatic, taper The quantity of shape, drainage core 23 can be selected according to actual condition demand；Under the premise of not considering 23 drainage efficiency of drainage core, draw The laying angle for flowing core 23 can not be perpendicular with the extending direction of conductive electrode 30, as long as drainage core 23 can be realized to graphite Current distribution homogenizes on raw material.

Further, the drainage core support 24 being provided in furnace body 20 for carrying drainage core 23 is smelted, core support is drained 24 both ends are separately fixed on two medial surfaces for smelting furnace body 20.In order to match the cylindrical shape of drainage core 23, drainage core Also the arc surface (not labeled) of indent is laid on bracket 24, with more firm carrying drainage core 23.

When the quantity of drainage core 23 is multiple, it is multiple that the quantity of drainage core support 24, which is also required to be correspondingly arranged,；It is multiple The arrangement that contacts with each other of drainage core support 24 is embarked on journey, and can also be arranged using other modes, as long as drainage core support 24 can be steady Admittedly carry drainage core 23.

Further, graphite pads (not shown) is provided between drainage core 23 and drainage core support 24, graphite pads are for delaying The vibration of drainage core 23 in an installation is rushed, fragile drainage core 23 is avoided to damage because of the shock and vibration in installation process It fractures, to further increase the reliability and stability of electric smelting furnace 100.

In an embodiment of the utility model, insulating layer is provided between fixed furnace body 10 and smelting furnace body 20 40, the temperature that insulating layer 40 can completely cut off fixed furnace body 10 and smelt between furnace body 20 is transmitted, and avoids smelting the height in furnace body 20 In warm loss to the external environment of fixed furnace body 10 and the fixed more outer layer of furnace body 10.The setting of insulating layer 40 reduces electric smelting furnace 100 energy consumption facilitates energy-saving and emission-reduction and reduces cost.

Preferably, the material of insulating layer 40 is after-smithing petroleum coke powder.Certainly, in other implementations, insulating layer 40 It is also an option that forging preceding petroleum coke, forging preceding needle coke, forge the other materials such as rear needle coke.

Further, insulating layer 40 includes bottom insulating layer 41, side insulating layer 42 and top insulating layer (not labeled), bottom Portion's insulating layer 41 is located between the bottom for smelting furnace body 20 and the bottom of fixed furnace body 10, and side insulating layer 42, which is located at, smelts furnace body Between 20 side and the side of fixed furnace body 10, top insulating layer is located at the top at the top for smelting furnace body 20 and fixed furnace body 10 Between portion.Certainly, if fixed furnace body 10 uses part sealing structure without top is arranged, then top insulating layer setting exists On the top for smelting furnace body 20.

Preferably, bottom insulating layer 41 with a thickness of 400-600mm, side insulating layer 42 with a thickness of 200-400mm, Top insulating layer with a thickness of 600-800mm.

In an embodiment of the utility model, the outside of fixed furnace body 10 is provided with support frame 11, support frame 11 It is used to support fixed furnace body 10, to improve the structural strength of fixed furnace body 10, fixed furnace body 10 is avoided to collapse.

Preferably, support frame 11 is triangular support bracket, is fixedly supported fixed furnace body 10 using the stability of triangle； In view of cost is relatively low for cast iron materials, compressive property is preferable, therefore support frame 11 is made of cast iron.

Certainly, in other implementations, support frame 11 can also be using other shapes in addition to the triangular, material Matter can also be using the other materials in addition to cast iron, and specific contoured and material can be selected according to requirement of actual working condition.

The manufacturing process of lower electric smelting furnace 100 is briefly described below and uses principle:

It is laid with bottom insulating layer 41 (after-smithing petroleum coke of such as 500mm thickness) in the bottom of fixed furnace body 10, then is protected in bottom The bottom and side by smelting furnace body 20 are built on warm layer 41, and are laid in the side of the side and fixed furnace body that smelt furnace body 20 Side insulating layer 42 (after-smithing petroleum coke of such as 300mm thickness)；Mat formation graphite raw material in the furnace chamber for smelting furnace body 20, by drainage core Bracket 24 is installed in furnace chamber, recycles graphite pads that drainage core 23 is firmly placed in drainage core support 24.It is filled out to raw material After furnace chamber, the top for smelting furnace body 20 is built, and (such as 700mm is thick for insulating layer at the top of the top for smelting furnace body 20 is laid with After-smithing petroleum coke), to complete shove charge process.

According to different properties of graphite material, using different graphitization temperature curves and graphite preparation is completed, it is naturally cold But it comes out of the stove, to prepare the graphite material for meeting lithium ion battery negative material performance requirement.

Electric smelting furnace 100 provided by the utility model encloses and sets using the horizontal brick 211 of muti-piece graphite and muti-piece graphite stretcher 212 Furnace body 20 is smelted with constituting, 21 self component of graphite brick will not interfere the calcining of graphite raw material to smelt, will not introduce new impurity, In any case the furnace body intensity being distributed is also relatively high, and the preparation quality and production capacity of electric smelting furnace 100 are promoted, before having a wide range of applications Scape.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate that this is practical new Type, and be not used as the restriction to the utility model, as long as implementing in the spirit of the utility model to above Suitably change and change made by mode and all falls in the range of the requires of the utility model protection.

Claims (10)

1. a kind of electric smelting furnace, including fixed furnace body, smelting furnace body and conductive electrode, the smelting furnace body are placed in the fixation In furnace body, the conductive electrode is stretched out from the smelting furnace body and stationary furnace body and is connected to external power supply, which is characterized in that The smelting furnace body is built by the horizontal brick of muti-piece graphite and muti-piece graphite stretcher.

2. electric smelting furnace as described in claim 1, which is characterized in that it is provided with wedge on the smelting furnace body and follows closely, adjacent two It is mutually embedded by wedge nail between a graphite brick and forms joinery and its construction.

3. electric smelting furnace as described in claim 1, which is characterized in that be provided with drainage core in the smelting furnace body.

4. electric smelting furnace as claimed in claim 3, which is characterized in that be further fixedly arranged on drainage core branch in the smelting furnace body Frame, the drainage core are set in the drainage core support.

5. electric smelting furnace as claimed in claim 4, which is characterized in that the electric smelting furnace includes Graphite pad, the graphite Gasket is set between the drainage core and the drainage core support.

6. electric smelting furnace as described in claim 1, which is characterized in that be arranged between the fixed furnace body and the smelting furnace body There is insulating layer.

7. electric smelting furnace as claimed in claim 6, which is characterized in that the insulating layer includes bottom insulating layer, side heat preservation Layer and top insulating layer, the bottom insulating layer with a thickness of 400 to 600 millimeters, the side insulating layer with a thickness of 200 to 400 millimeters, the top insulating layer with a thickness of 600 to 800 millimeters.

8. electric smelting furnace as described in claim 1, which is characterized in that the outside of the fixed furnace body is provided with support frame, institute It states support frame and is used to support the fixed furnace body.

9. electric smelting furnace as claimed in claim 8, which is characterized in that support frame as described above is triangular support bracket.

10. electric smelting furnace as claimed in claim 8, which is characterized in that support frame as described above is cast iron support frame.