CN215909650U - External heating type atmosphere rotary furnace with ceramic-lined furnace tube - Google Patents
External heating type atmosphere rotary furnace with ceramic-lined furnace tube Download PDFInfo
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- CN215909650U CN215909650U CN202122446598.5U CN202122446598U CN215909650U CN 215909650 U CN215909650 U CN 215909650U CN 202122446598 U CN202122446598 U CN 202122446598U CN 215909650 U CN215909650 U CN 215909650U
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Abstract
The utility model belongs to the technical field of battery material production equipment, and discloses an externally heated atmosphere rotary furnace with a ceramic lining furnace tube, wherein a high-temperature adhesive layer is arranged on the outer side of a ceramic lining special-shaped ring, and a high-temperature heat-resistant alloy layer is arranged on the outer side of the high-temperature adhesive layer; an aluminum silicate heating module is arranged outside the high-temperature heat-resistant alloy layer, a refractory fiber layer is arranged outside the aluminum silicate heating module, and a metal shell is arranged outside the refractory fiber layer; the lining ceramic heteromorphism is connected with the high-temperature heat-resistant alloy layer through a high-temperature binder layer, the aluminum silicate heating module is a resistance wire which is embedded in aluminum silicate fiber cotton, and the aluminum silicate heating module is formed by vacuum pouring. The lining structure of the lining ceramic material rotary furnace has the advantages of corrosion resistance, high temperature resistance and impact resistance, and has the most favorable characteristics that no new metal impurities are introduced in the treatment of the battery material, and the performance of the battery material is improved. The utility model can effectively improve the thermal shock property of the kiln wall, has proper radial temperature gradient of the kiln wall and low thermal stress, and is beneficial to prolonging the service life of the kiln liner.
Description
Technical Field
The utility model belongs to the technical field of battery material production equipment, and particularly relates to an external heating type atmosphere rotary furnace with a ceramic material furnace tube as a lining.
Background
At present, with the development of electric automobiles in the years, battery materials have great demand, and in the prior art, new lithium battery materials, ternary materials, lithium cobaltate battery materials and the like are calcined by adopting a push plate furnace and a roller furnace. With the development of the battery industry, the channel-type kilns also have the disadvantages of too small yield, too large energy consumption, too large occupied area, too low cost performance and the like, and have the characteristics of short required time, large treatment capacity, low energy consumption and the like in the dehydration of the battery material precursor iron phosphate, so that the channel-type kilns are realized by adopting a rotary furnace, and the rotary furnace has high yield, low energy consumption and high automation degree. However, the furnace tube has poor acid and alkali resistance, and the furnace tube needs to be replaced after being used for several years, which increases the production cost.
Through the above analysis, the problems and defects of the prior art are as follows: in the prior art, the furnace tube in the rotary furnace has poor acid and alkali resistance and needs to be replaced for a period of time, so that the production cost is increased.
The difficulty in solving the above problems and defects is: in the prior art, the metal furnace tube has poor acid and alkali resistance and serious corrosion after long-term use, metal elements are doped in the battery material to seriously affect the performance of the battery material, and the process for removing the metal elements at the later stage is complicated. The heating furnace of the non-metal furnace tube is easy to damage, the maintenance cost is high, and the period is long.
The significance of solving the problems and the defects is as follows: based on the reasons, the utility model provides the external heating type atmosphere rotary furnace with the lining ceramic material furnace tube,
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an external heating type atmosphere rotary furnace with a ceramic material furnace tube as a lining.
The utility model is realized in such a way that the external heating type atmosphere rotary furnace with the lining ceramic material furnace tube is provided with the lining ceramic special-shaped ring;
the outer side of the lining ceramic special-shaped ring is provided with a high-temperature adhesive layer, and the outer side of the high-temperature adhesive layer is provided with a high-temperature heat-resistant alloy layer;
the outer side of the high-temperature heat-resistant alloy layer is provided with an aluminum silicate heating module, the outer side of the aluminum silicate heating module is provided with a refractory fiber layer, and the outer side of the refractory fiber layer is provided with a metal shell.
Further, the lining ceramic abnormal ring is connected with the high-temperature heat-resistant alloy layer through a high-temperature adhesive layer.
Furthermore, the aluminum silicate heating module is formed by embedding a resistance wire in aluminum silicate fiber cotton and performing vacuum casting.
Furthermore, the lining ceramic special-shaped rings are annular, and all the rings are connected through a heat-preservation adhesive.
Further, the inner diameter of the lining ceramic special-shaped ring is in the range of phi 100 mm-phi 1500mm, and the axial length is in the range of 100mm-1000 mm.
Furthermore, the ceramic lining irregular ring is provided with an irregular guide plate in the radial direction, and the irregular guide plate and the ceramic irregular block outer ring are integrally formed.
Furthermore, the height of the special-shaped material guide plate is between 20mm and 350mm, and an included angle of 15 degrees to 75 degrees is formed between the special-shaped material guide plate and the round hearth along the axial direction.
By combining all the technical schemes, the utility model has the advantages and positive effects that: the external heating type atmosphere rotary furnace using the ceramic material lined furnace tube has the following metal element doping comparison table compared with the original metal rotary furnace:
the lining structure of the lining ceramic material rotary furnace has the advantages of corrosion resistance, high temperature resistance and impact resistance, and has the most favorable characteristics that no new metal impurities are introduced in the treatment of the battery material, and the performance of the battery material is improved.
The utility model can effectively improve the thermal shock property of the kiln wall, has proper radial temperature gradient of the kiln wall and low thermal stress, and is beneficial to prolonging the service life of the kiln liner.
The utility model effectively avoids the phenomenon of metal material slag falling when the rotary kiln burning zone works under the environment of high temperature and high temperature impact for a long time; the service life of the rotary furnace is prolonged, the production cost is saved, and the service cycle of the furnace tube of the rotary furnace is prolonged.
The utility model effectively avoids the corrosion of the metal furnace tube, simultaneously effectively prevents metal elements from being doped in the battery material, greatly prolongs the service cycle of the rotary furnace, and greatly reduces the replacement and maintenance of the rotary furnace accessories.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic structural view of an externally heated atmosphere rotary furnace with a ceramic-lined furnace tube according to an embodiment of the present invention.
Fig. 2 is a top view of a ceramic lined profiled ring according to an embodiment of the present invention.
Fig. 3 is a side view of a ceramic lined profiled ring according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a ceramic-lined special-shaped ring and a special-shaped material guide plate according to an embodiment of the present invention.
In the figure: 1. a ceramic-lined special-shaped ring; 2. a high temperature binder layer; 3. a high temperature heat resistant alloy layer; 4. an aluminum silicate heating module; 5. a refractory fiber layer; 6. a metal housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Aiming at the problems in the prior art, the utility model provides an external heating type atmosphere rotary furnace with a ceramic material furnace tube as a lining, and the utility model is described in detail below with reference to the attached drawings.
As shown in fig. 1, the anti-corrosion ceramic lining structure in the external heating type atmosphere rotary furnace of the ceramic material lined furnace tube provided by the embodiment of the utility model is formed by stacking and building high-temperature special-shaped ceramic rings, and the radial section of the lining structure is cylindrical.
The externally heated atmosphere rotary furnace structure of the ceramic-lined furnace tube is structurally provided with a ceramic-lined special-shaped ring 1, a high-temperature binder layer 2, a high-temperature heat-resistant alloy layer 3, an aluminum silicate heating module 4, a refractory fiber layer 5 and a metal shell 6 from inside to outside in sequence.
The lining ceramic special-shaped ring 1 is connected with the high-temperature heat-resistant alloy layer 3 through the high-temperature binder layer 2, the thermal shock property of the kiln wall can be effectively improved through the structure, the radial temperature gradient of the kiln wall is appropriate, the thermal stress is low, and the service life of the kiln lining is prolonged; the structure effectively avoids the phenomenon that the slag of the metal material falls when the burning zone of the rotary kiln works under the environment of high temperature and high temperature impact for a long time. The service life of the rotary furnace is prolonged, the production cost is saved, and the service cycle of the furnace tube of the rotary furnace is prolonged.
Wherein, the high-temperature adhesive layer 2 is epoxy resin, and the high-temperature heat-resistant alloy layer 3 is austenitic chromium-nickel stainless steel. The aluminum silicate heating module 4 is formed by embedding resistance wires in an aluminum silicate fiber module and performing vacuum casting. The refractory fiber layer 5 is aluminum silicate fiber cotton, and the metal shell 6 is made of carbon steel and subjected to anticorrosive plastic spraying treatment.
As shown in fig. 2-3, the ceramic-lined special-shaped ring 1 is circular, the inner diameter is in the range of phi 100 mm-phi 1500mm, the axial length is in the range of 100mm-1000mm, and each circular ring is connected with each other through a heat-insulating adhesive.
As shown in fig. 4, the ceramic-lined irregular ring 1 is provided with an irregular guide plate in the radial direction, the irregular guide plate and the ceramic irregular block outer ring are integrally formed, the height of the irregular guide plate is between 20mm and 350mm, and an included angle of 15 degrees to 75 degrees is formed between the irregular guide plate and the circular furnace chamber along the axial direction.
The working principle of the utility model is as follows: the ceramic lining structure is a heat-resistant alloy lining special-shaped ceramic material, and the whole structure is cylindrical; the ceramic lining structure of the rotary furnace is sequentially provided with a ceramic special-shaped body lining layer, a heat-resistant alloy furnace tube, a heating element module, a heat-insulating material and a carbon steel furnace shell from inside to outside. The ceramic material lining has the advantages of high temperature resistance, strong corrosion resistance and impact resistance. The metal furnace tube with the thickness of 12mm can effectively improve the strength of the rotary furnace body, the heating module and the heat-insulating layer with the thickness of 360mm can effectively improve the thermal shock stability of the furnace wall, the radial temperature gradient of the furnace wall is appropriate, the thermal stress is low, the service life of the furnace is prolonged, particularly, the metal furnace tube is more durable than a simple metal furnace tube, the service life is prolonged by more than one time, and the structure effectively avoids the corrosion of surface layer metal of the rotary furnace tube from falling off when the rotary furnace firing zone works in the environment of high temperature and high temperature impact for a long time; the service life of the rotary furnace is prolonged, the production cost is saved, and the replacement and maintenance period of the rotary furnace accessories is prolonged.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the utility model, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. The externally heated atmosphere rotary furnace with the ceramic material furnace tube inside is characterized by being provided with:
a ceramic-lined special-shaped ring;
the outer side of the lining ceramic special-shaped ring is provided with a high-temperature adhesive layer, and the outer side of the high-temperature adhesive layer is provided with a high-temperature heat-resistant alloy layer;
the outer side of the high-temperature heat-resistant alloy layer is provided with an aluminum silicate heating module, the outer side of the aluminum silicate heating module is provided with a refractory fiber layer, and the outer side of the refractory fiber layer is provided with a metal shell.
2. The externally heated rotary furnace having a ceramic lined furnace tube of claim 1 wherein the ceramic lined profiled ring is bonded to the high temperature heat resistant alloy layer by a high temperature binder layer.
3. The externally heated atmosphere rotary furnace with a ceramic material lined furnace tube as claimed in claim 1, wherein the aluminum silicate heating module is formed by embedding resistance wires in aluminum silicate fiber cotton and performing vacuum casting.
4. The externally heated atmosphere rotary furnace with a ceramic lined furnace tube of claim 1, wherein the ceramic lined special-shaped rings are circular rings, and each circular ring is connected with each other through a heat preservation adhesive.
5. The externally heated atmosphere rotary furnace with ceramic lined furnace tube of claim 4 wherein the ceramic lined profiled ring has an internal diameter in the range of Φ 100mm- Φ 1500mm and an axial length in the range of 100mm-1000 mm.
6. The externally heated atmosphere rotary furnace with ceramic lined furnace tube of claim 1, wherein the ceramic lined special-shaped ring is provided with a special-shaped material guiding plate in radial direction, and the special-shaped material guiding plate is integrally formed with the ceramic special-shaped block outer ring.
7. The externally heated atmosphere rotary furnace with ceramic material lined furnace tube of claim 6, wherein the height of the special-shaped material guiding plate is 20mm-350mm, and the included angle between the special-shaped material guiding plate and the circular hearth is 15-75 degrees along the axial direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122446598.5U CN215909650U (en) | 2021-10-11 | 2021-10-11 | External heating type atmosphere rotary furnace with ceramic-lined furnace tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122446598.5U CN215909650U (en) | 2021-10-11 | 2021-10-11 | External heating type atmosphere rotary furnace with ceramic-lined furnace tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003107A (en) * | 2022-12-27 | 2023-04-25 | 武汉钢铁集团耐火材料有限责任公司 | Method and equipment for reducing electric smelting magnesia particles of regenerated magnesia carbon bricks |
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2021
- 2021-10-11 CN CN202122446598.5U patent/CN215909650U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003107A (en) * | 2022-12-27 | 2023-04-25 | 武汉钢铁集团耐火材料有限责任公司 | Method and equipment for reducing electric smelting magnesia particles of regenerated magnesia carbon bricks |
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