CN220793871U - Heat conduction type furnace lining structure of lithium battery roasting kiln - Google Patents
Heat conduction type furnace lining structure of lithium battery roasting kiln Download PDFInfo
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- CN220793871U CN220793871U CN202322339628.1U CN202322339628U CN220793871U CN 220793871 U CN220793871 U CN 220793871U CN 202322339628 U CN202322339628 U CN 202322339628U CN 220793871 U CN220793871 U CN 220793871U
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- heat
- layer
- heat conduction
- furnace lining
- pipe
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000011449 brick Substances 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 239000004964 aerogel Substances 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004321 preservation Methods 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052863 mullite Inorganic materials 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 abstract description 12
- 238000009413 insulation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 150000002641 lithium Chemical class 0.000 abstract description 2
- 239000010405 anode material Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 230000009970 fire resistant effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004965 Silica aerogel Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
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Abstract
The utility model discloses a heat conduction type furnace lining structure of a lithium battery roasting kiln, which comprises a furnace shell and a refractory brick masonry layer, wherein an aerogel heat insulation layer is paved between the furnace shell and the refractory brick masonry layer, an electric heating plate is arranged on the inner wall surface of the refractory brick masonry layer, an inner heat conduction layer is supported on the inner wall surface of the electric heating plate through a heat conduction carbon fiber layer, a heat conduction pipe is buried in the heat conduction carbon fiber layer between the electric heating plate and the inner heating layer, heat conduction oil is filled in the heat conduction pipe, and the heat conduction pipe is arranged along the length direction of the furnace lining. The inner heat conducting layer is a heat conducting ceramic layer, and the heat conducting ceramic layer encloses a circular tube-shaped furnace chamber. The heat conduction pipe is a heat-resistant stainless steel pipe, and heat conduction oil is filled in the heat-resistant stainless steel pipe. The heat-conducting furnace lining structure has the advantages of good heat insulation and heat preservation effects, high heating efficiency, good furnace lining heat conduction effect and capability of ensuring the uniformity of the heating temperature of the kiln cavity and the firing quality.
Description
Technical Field
The utility model relates to a kiln for roasting lithium battery electrode materials, in particular to a kiln lining structure of a rotary kiln for roasting lithium battery anode materials.
Background
The lithium battery electrode material mainly comprises a positive electrode material and a negative electrode material, wherein the negative electrode material is carbon with a special molecular structure, and the positive electrode material is usually composed of a lithium active compound.
The method mainly comprises the following steps of low-temperature firing and high-temperature firing, wherein the low-temperature firing is completed in different kilns, raw material liquid and solid are mixed, the mixed raw material liquid or solid is placed into a heating furnace for low-temperature firing, a primary material is formed after the low-temperature firing, and the primary material formed after the low-temperature firing enters a high-temperature kiln for high-temperature firing, so that the lithium battery anode material can be formed.
The rotary roasting rotary kiln for low temperature roasting of lithium battery anode material mainly includes kiln shell and refractory heat-insulating layer in the kiln shell. The existing structure has some defects, firstly, the furnace lining structure of the rotary kiln has insufficient heat insulation effect, the heat loss is larger, and the heating efficiency is lower; secondly, as the raw material liquid and the solid are continuously turned over in the rotary furnace chamber, uneven accumulation of raw materials in the furnace chamber inevitably occurs, so that firing temperature gradient among all areas is caused, uneven heating temperature is caused, and the heat preservation and heat insulation effects of the furnace lining are insufficient, so that the uneven temperature of the areas is further increased, and the uneven temperature of the furnace chamber directly affects the pyrolysis reaction of the anode material to form uneven anode material with a tissue structure; thirdly, as the anode raw material is continuously rolled in the kiln cavity, the wear resistance and corrosion resistance of the cavity surface of the furnace lining are insufficient, the service life of the inner furnace lining is influenced, and the quality of the firing raw material is also influenced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the technical problem to be solved by the utility model is to provide the heat-conducting furnace lining structure of the lithium battery roasting kiln, which has the advantages of good heat insulation and preservation effect, high heating efficiency, good furnace lining heat conduction effect, capability of ensuring the uniformity of the heating temperature of the kiln cavity and ensuring the firing quality of the kiln cavity.
In order to solve the technical problems, the technical scheme of the utility model is that the heat conduction type furnace lining structure of the lithium battery roasting kiln comprises a furnace shell and a refractory brick masonry layer, wherein an aerogel heat insulation layer is paved between the furnace shell and the refractory brick masonry layer, an electric heating plate is arranged on the inner wall surface of the refractory brick masonry layer, an inner heat conduction layer is supported on the inner wall surface of the electric heating plate through a heat conduction carbon fiber layer, a heat conduction pipe is buried in the heat conduction carbon fiber layer between the electric heating plate and the inner heating layer, heat conduction oil is filled in the heat conduction pipe, and the heat conduction pipe is arranged along the length direction of the furnace lining.
In the structure, the aerogel heat-insulating layer is paved between the furnace shell and the refractory brick masonry layer, wherein the refractory brick masonry layer not only supports and enhances the stability and structural rigidity of the furnace lining structure, but also has good heat-insulating effect; the aerogel heat preservation not only greatly lightens the weight of a furnace lining, but also has excellent heat insulation performance, and the ultralow heat conductivity coefficient effectively reduces heat loss and the thickness of the heat preservation and heat insulation layer. And as the heat conducting pipe is buried in the heat conducting carbon fiber layer and filled with heat conducting oil, the heat conducting carbon fiber has good mechanical property and excellent heat conducting and radiating capabilities, the heat conducting pipe and the heat conducting oil therein can greatly improve the heating uniformity, the heat transfer efficiency is high, the heat stability is good, and the heating uniformity and the heating stability of the furnace chamber can be greatly improved. And the inner heat conducting layer is supported on the heat conducting carbon fiber layer, so that the wear resistance, heat conducting uniformity and abrasion resistance of the furnace lining are enhanced, the quality and purity of the fired anode material are improved, and the uniformity of the heating temperature of the furnace lining is further stabilized by the inner heat conducting layer.
In a further embodiment of the present utility model, the inner heat conducting layer is a heat conducting ceramic layer, and the heat conducting ceramic layer encloses a circular tube-shaped furnace chamber. Has the characteristics of high melting point, corrosion resistance and oxidation resistance.
In a further embodiment of the present utility model, the aerogel insulation layer is laid from a silica aerogel blanket. Has high heat insulation effect.
In a further embodiment of the present utility model, the electric heating plate is a mica electric heating plate; the refractory brick masonry layer is formed by masonry of light mullite refractory bricks; the furnace shell is formed by rolling and welding a carbon steel plate. High heating efficiency and good heat preservation and insulation effects.
In a further embodiment of the present utility model, the heat-conducting carbon fiber layer is formed by laying heat-conducting carbon fibers; the inner heat conduction layer is composed of high heat conduction ceramic plates. The heat conduction pipe is a heat-resistant stainless steel pipe, and heat conduction oil is filled in the heat-resistant stainless steel pipe; the heat conducting pipes are uniformly and parallelly arranged along the circumferential direction of the furnace chamber. The heat conduction effect is good, a uniform heating temperature field can be formed, and the firing quality of the anode material is greatly improved.
Drawings
The heat-conducting furnace lining structure of the lithium battery roasting kiln is further described in detail below with reference to the attached drawings and the detailed description.
FIG. 1 is a schematic cross-sectional view of a specific embodiment of a heat conducting lining structure of a lithium battery roasting kiln according to the present utility model;
fig. 2 is a schematic cross-sectional view of the heat pipe in the embodiment shown in fig. 1.
In the figure, 1-furnace shell, 2-aerogel heat preservation layer, 3-firebrick masonry layer, 4-electric heating plate, 5-heat conduction carbon fiber layer, 6-heat conduction pipe, 7-inner heat conduction layer and 8-heat conduction oil.
Detailed Description
The heat conduction type furnace lining structure of the lithium battery roasting kiln shown in fig. 1 comprises a furnace shell 1, wherein the furnace shell 1 is rolled by a carbon steel plate and welded to form a cylinder shape, an aerogel heat preservation layer 2 is paved on the inner cylinder wall of the furnace shell 1, the aerogel heat preservation layer 2 is paved by a silicon dioxide aerogel felt, and the aerogel heat preservation layer 2 can also be formed by other corresponding aerogels. The fire-resistant brick masonry layer 3 is built on the aerogel heat-insulating layer 2, the fire-resistant brick masonry layer 3 is formed by building mullite light fire-resistant bricks, and the aerogel heat-insulating layer 2 is positioned between the furnace shell 1 and the fire-resistant brick masonry layer 3. An electric heating plate 4 is arranged on the inner wall surface of a refractory brick masonry layer 3 built by mullite lightweight refractory bricks, and the electric heating plate 4 is a mica heating plate; an inner heat conducting layer 7 is supported on the electric heating plate 4 through a heat conducting carbon fiber layer 5, namely the heat conducting carbon fiber layer 5 is positioned between the inner heat conducting layer 7 and the electric heating plate 4, the inner heat conducting layer 7 is formed by high heat conducting ceramic plates, and the inner heat conducting layer 7 encloses a cylindrical furnace chamber. The heat conduction pipes 6 are buried in the heat conduction carbon fiber layer 5 paved by the heat conduction carbon fibers, the heat conduction pipes 6 are arranged along the length direction of the furnace lining, and the plurality of heat conduction pipes 6 are uniformly arranged in parallel with each other along the circumferential direction of the furnace chamber.
As shown in fig. 2, the heat conducting pipe 6 is a heat-resistant stainless steel pipe, heat conducting oil 8 is filled in the heat-resistant stainless steel pipe, two ends of the heat conducting pipe 6 are flattened and sealed in a cold stamping mode, and the heat conducting oil 8 is ultrahigh-temperature heat conducting oil. The heat conductive pipe 6 may be a copper pipe.
The foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that various modifications can be made in the foregoing embodiments, or equivalents can be substituted for elements thereof, and any modifications, equivalents, improvements or changes that fall within the spirit and principles of the present utility model should be included within the scope of the present utility model.
Claims (6)
1. The utility model provides a lithium cell roasting kiln heat conduction formula furnace lining structure, includes stove outer covering (1) and firebrick masonry layer (3), its characterized in that: aerogel heat preservation (2) have been laid between stove outer covering (1) and firebrick layer (3) of building by laying, set up electrical heating board (4) on firebrick layer (3) internal face, the internal face of electrical heating board (4) has interior heat conduction layer (7) through heat conduction carbon fiber layer (5) support, is located in heat conduction carbon fiber layer (5) between electrical heating board (4) and interior heat conduction layer (7), heat pipe (6) have been buried in heat pipe (6), it has conduction oil (8) to fill in heat pipe (6), and this heat pipe (6) set up along furnace lining length direction.
2. The lithium battery roasting kiln heat conduction type furnace lining structure according to claim 1, wherein: the inner heat conducting layer (7) is a heat conducting ceramic layer, and the heat conducting ceramic layer encloses a circular tube-shaped furnace chamber.
3. The lithium battery roasting kiln heat conduction type furnace lining structure according to claim 1, wherein: the aerogel heat preservation layer (2) is formed by paving a silicon dioxide aerogel felt.
4. The lithium battery roasting kiln heat conduction type furnace lining structure according to claim 1, wherein: the electric heating plate (4) is a mica electric heating plate; the refractory brick masonry layer (3) is formed by masonry of light mullite refractory bricks; the furnace shell (1) is formed by rolling and welding a carbon steel plate.
5. The lithium battery roasting kiln heat conduction type furnace lining structure according to claim 1, wherein: the heat-conducting carbon fiber layer (5) is paved by heat-conducting carbon fibers; the inner heat conduction layer (7) is formed by a high heat conduction ceramic sheet.
6. The lithium battery roasting kiln heat conduction type furnace lining structure according to claim 1, wherein: the heat conducting pipe (6) is a heat-resistant stainless steel pipe, and heat conducting oil (8) is filled in the heat-resistant stainless steel pipe; the heat conducting pipes (6) are uniformly and parallelly arranged along the circumferential direction of the furnace chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322339628.1U CN220793871U (en) | 2023-08-30 | 2023-08-30 | Heat conduction type furnace lining structure of lithium battery roasting kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322339628.1U CN220793871U (en) | 2023-08-30 | 2023-08-30 | Heat conduction type furnace lining structure of lithium battery roasting kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220793871U true CN220793871U (en) | 2024-04-16 |
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ID=90654274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322339628.1U Active CN220793871U (en) | 2023-08-30 | 2023-08-30 | Heat conduction type furnace lining structure of lithium battery roasting kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220793871U (en) |
-
2023
- 2023-08-30 CN CN202322339628.1U patent/CN220793871U/en active Active
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