CN117704818A - Furnace lining structure of industrial electric furnace and construction method thereof - Google Patents
Furnace lining structure of industrial electric furnace and construction method thereof Download PDFInfo
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- CN117704818A CN117704818A CN202311706484.7A CN202311706484A CN117704818A CN 117704818 A CN117704818 A CN 117704818A CN 202311706484 A CN202311706484 A CN 202311706484A CN 117704818 A CN117704818 A CN 117704818A
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- furnace
- lining structure
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims description 121
- 238000009413 insulation Methods 0.000 claims description 30
- 238000004321 preservation Methods 0.000 claims description 25
- 239000011241 protective layer Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 7
- 239000002121 nanofiber Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000011449 brick Substances 0.000 abstract description 17
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000002829 reductive effect Effects 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/10—Monolithic linings; Supports therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
An industrial electric furnace lining structure and a construction method thereof relate to the field of electric furnaces. The industrial electric furnace lining structure comprises a pouring working layer, a pouring heat-insulating layer and a furnace shell which are sequentially arranged outside a furnace chamber from inside to outside, a furnace shell protection layer is arranged between the outer side wall of the pouring heat-insulating layer and the inner wall of the furnace shell, an arc-shaped heat-insulating cavity is arranged between the top of the pouring working layer and the pouring heat-insulating layer, a plurality of groups of U-shaped heating bodies are arranged in the furnace chamber, the plurality of groups of heating bodies are arranged at intervals along the length direction of the furnace shell, each group of heating bodies comprises two heating bodies symmetrically arranged on two sides of the furnace shell, and two ends of each heating body sequentially extend out of the pouring working layer, the pouring heat-insulating layer and the furnace shell. According to the industrial electric furnace lining structure and the construction method thereof, the pouring working layer and the pouring heat-insulating layer are obtained through integral pouring, so that the service life of a masonry brick joint is prevented from being influenced by erosion, and meanwhile, the heat-insulating cavity is obtained through construction between the pouring working layer and the pouring heat-insulating layer, so that the heat-insulating performance is improved, the heat loss is reduced, and the energy consumption is reduced.
Description
Technical Field
The application relates to the field of electric furnaces, in particular to an industrial electric furnace lining structure and a construction method thereof.
Background
The electric furnace is used as one of the most commonly used high-temperature equipment in metallurgical industry and the like, and the quality of a furnace lining is a key part for determining the service life of the furnace lining. The furnace lining structure of the electric furnace commonly used at present is as follows: the working layer is made of vibration-molded alumina hollow sphere precast blocks or small bricks by slurry masonry, the heat-insulating layer is made of light high-alumina bricks and other heat-insulating materials by masonry, and a fiber blanket is used between the heat-insulating layer and the furnace shell for packing and compacting. Because the electric furnace needs to work at high temperature for a long time and the temperature rising and reducing rate is required to be fast, the requirements on the high temperature resistance and the thermal shock resistance index of the furnace lining material are very high.
The furnace lining cracking, deformation, furnace smoke channeling, brick dropping and other phenomena can occur in the electric furnace after the electric furnace is used for 2-3 years due to extremely high use frequency, acid-base atmosphere corrosion and serious slag corrosion, so that the heat preservation effect of the furnace is poor, the temperature in the furnace is uneven, the temperature of the furnace shell is increased, even the serious conditions of redness and the like of the furnace shell occur, and the electric furnace needs to be used or scrapped after being maintained and checked to be qualified.
The reason for the defect of the low service life of the existing electric furnace lining is mainly as follows: 1. brick joints exist when the precast blocks or small bricks of the furnace lining working layer are spliced and built; 2. brick joints exist when the heat-insulating materials used for the furnace lining heat-insulating layer are spliced and built; 3. brick joints exist between the furnace lining working layer and the heat preservation layer due to brick type splicing and masonry; 4. and (3) using a poor-quality furnace lining material. The brick joints of the furnace lining lead to the furnace lining being corroded or eroded by high-temperature air flow, acid-base atmosphere, sample slag, furnace slag and the like when in work, the brick joints become larger, crack and deform gradually, and further the phenomena of furnace hearth smoke channeling, even brick dropping and the like occur, thereby the heat preservation effect of the furnace lining is deteriorated, the energy consumption is wasted, and the service life of the furnace lining is finally reduced.
Disclosure of Invention
The utility model provides an industrial electric furnace lining structure and construction method thereof, thereby it obtains pouring working layer and pouring heat preservation through whole pouring thereby avoids the bricklaying brick seam to receive erosion influence life, and construction obtains thermal-insulated chamber between pouring working layer and pouring heat preservation simultaneously and improves thermal-insulated performance in order to reduce heat loss and reduce the energy consumption.
The application is realized in such a way that:
the application provides an industrial electric furnace lining structure, it includes from inside to outside arrange in proper order in the pouring working layer in the furnace chamber outside, pour heat preservation and stove outer covering, be equipped with the stove outer covering protective layer between pouring heat preservation lateral wall and the stove inner wall, be equipped with curved thermal-insulated chamber between pouring working layer top and the pouring heat preservation, be equipped with the heating member of multiunit U-shaped in the furnace chamber, multiunit heating member along stove outer covering length direction interval arrangement, every group all includes the heating member of two symmetry locating stove outer covering both sides, the both ends of heating member stretch out respectively in proper order and pour working layer, pour heat preservation and stove outer covering.
In some alternative embodiments, a heating body fixing layer sleeved on the heating body is arranged in the heat insulation cavity.
In some alternative embodiments, the two ends of the heating body extend out of the pouring heat insulation layer and then are connected with a fixing clamp.
In some alternative embodiments, the furnace shell protective layer is a nanofiber sheet having a thickness of 30-50mm.
In some alternative embodiments, the furnace further comprises a plurality of thermocouples spaced along the centerline of the furnace chamber, the thermocouples extending into the furnace chamber through the furnace shell, the casting insulation layer, and the casting work layer.
The application also provides a construction method of the industrial electric furnace lining structure, which comprises the following steps:
pouring the bottom wall of the furnace shell to obtain a lower heat-insulating layer;
pouring the top of the lower heat preservation layer to obtain a lower working layer;
constructing the inner side wall of the furnace shell to obtain a furnace shell protection layer;
pouring an upper working layer on the top of the lower working layer, and connecting the lower working layer and the upper working layer to form a pouring working layer;
paving a pearl cotton foam plate to form an arc-shaped heat insulation layer on the top of the pouring working layer;
pouring an upper heat-insulating layer outside the heat-insulating layer, and connecting the lower heat-insulating layer with the upper heat-insulating layer to form a pouring heat-insulating layer;
and heating after installing a heating body to enable the heat insulation layer to be digested to form a heat insulation cavity.
In some alternative embodiments, when the pearl wool foam board is laid on the top of the pouring working layer to form an arc-shaped heat insulation layer, a gap with the diameter of 20mm-40mm is reserved at the preset position where the heating body passes through the heat insulation cavity to form the heating body fixing layer.
In some alternative embodiments, the furnace chamber is warmed to above 65 ℃ for more than 12 hours and then warmed to above 110 ℃ for more than 24 hours before heating after the heating body is installed.
In some alternative embodiments, 20mm to 100mm thick nanofiber sheets are inlaid into the inner side wall of the furnace shell when the inner side wall of the furnace shell is constructed to obtain a furnace shell protective layer.
The beneficial effects of this application are: the utility model provides an industry electric furnace lining structure includes from inside to outside arrange in proper order in the work layer of pouring in the furnace chamber outside, pour heat preservation and stove outer covering, be equipped with the stove outer covering protective layer between heat preservation lateral wall and the stove outer covering inner wall, pour work layer top and pour and be equipped with curved thermal-insulated chamber between the heat preservation, be equipped with the heating member of multiunit U-shaped in the furnace chamber, multiunit heating member along stove outer covering length direction interval arrangement, every group all includes the heating member of two symmetry locating stove outer covering both sides, the both ends of heating member stretch out respectively in proper order and pour the work layer, pour heat preservation and stove outer covering. According to the industrial electric furnace lining structure and the construction method thereof, the pouring working layer and the pouring heat-insulating layer are obtained through integral pouring, so that the service life of a masonry brick joint is prevented from being influenced by erosion, and meanwhile, the heat-insulating cavity is obtained through construction between the pouring working layer and the pouring heat-insulating layer, so that the heat-insulating performance is improved, the heat loss is reduced, and the energy consumption is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a partial cross-sectional structure of a first view of an industrial furnace lining structure provided in an embodiment of the present application;
FIG. 2 is a schematic view of a partial cross-sectional structure of a second view of an industrial furnace lining structure provided in an embodiment of the present application.
In the figure: 100. a cavity; 110. pouring a working layer; 111. a lower working layer; 112. an upper working layer; 120. pouring an insulating layer; 121. a lower heat-insulating layer; 122. an upper insulation layer; 130. a furnace shell; 140. a furnace shell protective layer; 150. a heat insulating chamber; 160. a heating body; 170. a heating body fixing layer; 180. a fixing clamp; 190. and a thermocouple.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The lining structure of the industrial electric furnace and the characteristics and performances of the construction method thereof of the present application are described in further detail below with reference to examples.
As shown in fig. 1 and fig. 2, the embodiment of the application provides an industrial electric furnace lining structure, which comprises a pouring working layer 110, a pouring heat-insulating layer 120 and a furnace shell 130 which are sequentially arranged outside a furnace chamber 100 from inside to outside, wherein a furnace shell protection layer 140 is arranged between the outer side wall of the pouring heat-insulating layer 120 and the inner wall of the furnace shell 130, an arc-shaped heat insulation cavity 150 is arranged between the top of the pouring working layer 110 and the pouring heat-insulating layer 120, a heating body fixing layer 170 sleeved on a heating body 160 is arranged in the heat insulation cavity 150, U-shaped heating bodies 160 which are arranged at intervals in pairs along the length direction of the furnace shell 130 are arranged in the furnace chamber 100, each pair of heating bodies 160 comprises two heating bodies 160 symmetrically arranged at two sides of the furnace shell 130, two ends of each heating body 160 sequentially extend out of the pouring working layer 110, the pouring heat-insulating layer 120 and the furnace shell 130 respectively, two ends of each heating body 160 extend out of the pouring heat-insulating layer 120 and are connected with a fixing clamp 180, and the furnace shell protection layer 140 is a heat-resistant nano fiber plate with a thickness of 30-50mm. The lining structure of the industrial electric furnace further comprises thermocouples 190 which are arranged at intervals along the central line of the furnace chamber 100, wherein the thermocouples 190 penetrate through the furnace shell 130, the pouring heat insulation layer 120 and the pouring working layer 110 and extend into the furnace chamber 100.
The embodiment of the application also provides a construction method of the industrial electric furnace lining structure, which comprises the following steps:
the bottom wall of the furnace shell 130 is tightly attached to the bottom wall of the furnace by adopting heat-resistant light castable to pour to obtain the lower heat-insulating layer 121, and the thickness of the lower heat-insulating layer 121 is 20-100mm.
After the lower heat preservation layer 121 is cast for 16 hours, a heat-resistant casting material is cast on the upper portion of the lower heat preservation layer 121 to obtain the lower working layer 111, and the thickness of the lower heat preservation layer 121 is 30-50mm.
Embedding heat-resistant nanofiber plates with the thickness of 20-100mm on the inner side wall of the furnace shell 130 to obtain a furnace shell protective layer 140;
integrally arranging a die according to the design size of a furnace lining and the requirements of the number and the shape of heating bodies, paving a layer of oilpaper or plastic film on the die so as to facilitate later demolding, integrally casting an upper working layer 112 with the thickness of 30-60mm at one time by adopting a heat-resistant casting material after the die is supported, connecting the lower working layer 111 and the upper working layer 112 to form a casting working layer 110, and reserving a furnace door and a through hole for the heating body 160 and the thermocouple 190 to pass through;
maintaining the pouring working layer 110 for more than 24 hours, tightly adhering the top surface of the pouring working layer 110, cutting a corresponding low-melting-point pearl cotton foam board according to the shape and the size of a furnace lining, paving to form an arc-shaped heat insulation layer, wherein the thickness of the heat insulation layer is 10-40mm, reserving a gap with the diameter of 20-40mm at the preset position where the heating body 160 and the thermocouple 190 penetrate through the heat insulation cavity 150, and pouring to form a heating body fixing layer 170, so that the heating body fixing layer 170 plays a role of supporting an upright post of the pouring heat insulation layer 120;
the heat-resistant light castable is adopted to pour the outer side of the heat-insulating layer to form an upper heat-insulating layer 122 with the thickness of 30-60mm, and the lower heat-insulating layer 121 and the upper heat-insulating layer 122 are connected to form a pouring heat-insulating layer 120. Naturally drying for more than 24h, demoulding, heating the furnace chamber 100 to more than 65 ℃ and preserving heat for more than 12h, and then heating to more than 110 ℃ and preserving heat for more than 24h
After the heating body 160 is installed, the furnace door heating oven is closed, so that the heat insulation layer is digested to form the heat insulation cavity 150.
According to the industrial electric furnace lining structure and the construction method thereof, the pouring working layer 110 and the pouring heat preservation layer 120 are obtained through integral pouring molding, the low-melting-point pearl cotton foam board is arranged between the pouring working layer 110 and the pouring heat preservation layer 120 to form the arc-shaped heat insulation layer, and finally the heat insulation layer is heated to digest and form the heat insulation cavity 150, so that the integrated structure of the furnace top, the furnace wall and the furnace bottom is realized, the problem of brick joints left when the traditional furnace lining is built by precast blocks or small bricks is thoroughly eliminated, the service life of the brick joints is prevented from being influenced by corrosion, and meanwhile, the heat insulation layer formed by melting and digesting the pearl cotton foam board forms the airtight hollow air heat insulation cavity 150, so that heat loss in the furnace can be effectively reduced, the effects of energy conservation and consumption reduction are achieved, and the problems of large heat loss, poor heat preservation effect and energy consumption waste of the traditional furnace lining are solved.
The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Claims (9)
1. The utility model provides an industry electric furnace lining structure, its characterized in that includes from inside to outside arranges in proper order in the pouring working layer in the furnace chamber outside, pour heat preservation and stove outer covering, pour the heat preservation lateral wall with be equipped with the stove outer covering protective layer between the stove outer covering inner wall, pour the working layer top with pour and be equipped with curved thermal-insulated chamber between the heat preservation, be equipped with multiunit U-shaped's heating member in the furnace chamber, multiunit the heating member is followed stove outer covering length direction interval arrangement, every group all includes two symmetries locate the heating member of stove outer covering both sides, the both ends of heating member stretch out respectively in proper order pour the working layer pour the heat preservation with the stove outer covering.
2. The lining structure of an industrial electric furnace according to claim 1, wherein a heating body fixing layer sleeved on the heating body is arranged in the heat insulation cavity.
3. The lining structure of an industrial electric furnace according to claim 1, wherein two ends of the heating body extend out of the pouring heat-insulating layer and are connected with a fixing clamp.
4. The lining structure of an industrial electric furnace according to claim 1, wherein the furnace shell protective layer is a 30-50mm thick nanofiber sheet.
5. The industrial furnace lining structure of claim 1, further comprising a plurality of thermocouples spaced along the furnace chamber centerline, the thermocouples extending into the furnace chamber through the furnace shell, the casting insulation layer, and the casting work layer.
6. The method of constructing an industrial electric furnace lining structure according to any one of claims 1 to 5, comprising the steps of:
pouring the bottom wall of the furnace shell to obtain a lower heat-insulating layer;
pouring the top of the lower heat preservation layer to obtain a lower working layer;
constructing the inner side wall of the furnace shell to obtain a furnace shell protection layer;
pouring an upper working layer on the top of the lower working layer, and connecting the lower working layer and the upper working layer to form a pouring working layer;
paving a pearl cotton foam plate to form an arc-shaped heat insulation layer at the top of the pouring working layer;
pouring an upper heat-insulating layer outside the heat-insulating layer, and connecting the lower heat-insulating layer with the upper heat-insulating layer to form a pouring heat-insulating layer;
and heating after installing a heating body to enable the heat insulation layer to be digested to form a heat insulation cavity.
7. The construction method of the industrial electric furnace lining structure according to claim 6, wherein when the pearl wool foam board is paved on the top of the pouring working layer to form an arc-shaped heat insulation layer, a gap with the diameter of 20mm-40mm is reserved at the preset position where the heating body passes through the heat insulation cavity to be poured to form a heating body fixing layer.
8. The construction method of the lining structure of the industrial electric furnace according to claim 6, wherein the furnace chamber is heated to 65 ℃ or higher for 12 hours or more and then heated to 110 ℃ or higher for 24 hours or more before heating after the heating body is installed.
9. The construction method of an industrial electric furnace lining structure according to claim 6, wherein when the furnace shell inner side wall is constructed to obtain a furnace shell protective layer, a nanofiber plate with the thickness of 20mm-100mm is inlaid on the furnace shell inner side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311706484.7A CN117704818A (en) | 2023-12-11 | 2023-12-11 | Furnace lining structure of industrial electric furnace and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311706484.7A CN117704818A (en) | 2023-12-11 | 2023-12-11 | Furnace lining structure of industrial electric furnace and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117704818A true CN117704818A (en) | 2024-03-15 |
Family
ID=90154688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311706484.7A Pending CN117704818A (en) | 2023-12-11 | 2023-12-11 | Furnace lining structure of industrial electric furnace and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117704818A (en) |
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2023
- 2023-12-11 CN CN202311706484.7A patent/CN117704818A/en active Pending
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