CN110260660B - Furnace lining module and full-closed submerged arc furnace lining damage repairing method - Google Patents
Furnace lining module and full-closed submerged arc furnace lining damage repairing method Download PDFInfo
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- CN110260660B CN110260660B CN201910393952.7A CN201910393952A CN110260660B CN 110260660 B CN110260660 B CN 110260660B CN 201910393952 A CN201910393952 A CN 201910393952A CN 110260660 B CN110260660 B CN 110260660B
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- furnace lining
- furnace
- module
- anchoring piece
- lining
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- 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
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- 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
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
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- 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
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D2001/1605—Repairing linings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention belongs to the technical field of equipment and facilities of an ore smelting furnace, and discloses a furnace lining module which comprises an anchoring piece and a furnace lining material, wherein the main body of the anchoring piece is a hollow heat-resistant pipe, the anchoring piece is arranged in the furnace lining material, the outer surface of the anchoring piece is completely combined with the furnace lining material to form a block, and the end of the anchoring piece is flush with the surface of the furnace lining material. Also discloses a full-closed submerged arc furnace lining damage repairing method, which comprises the following four steps: firstly, prefabricating a furnace lining module; secondly, cleaning the damaged part of the furnace lining; thirdly, installing a furnace lining module; and fourthly, plugging, namely plugging the hollow part of the heat-resistant pipe and the clearance of the damaged part of the furnace lining at the periphery of the furnace lining module by using a furnace lining material to form integral sealing. The furnace lining module can be prefabricated in advance by adopting easily available materials, repair of the falling and damaged part of the furnace lining is carried out by using the furnace lining module, a furnace cover does not need to be detached, the efficiency is improved, and the maintenance time and the influence on the production are reduced.
Description
Technical Field
The invention belongs to the technical field of ore smelting furnace equipment and facilities, and particularly relates to a furnace lining module and a full-closed submerged arc furnace lining damage repairing method.
Background
In mineral product smelting, an ore smelting furnace is common equipment for mineral product smelting, wherein the ore smelting furnace is a fully-closed ore smelting furnace, a furnace body of the ore smelting furnace is provided with a furnace cover and a furnace lining, the furnace lining is used for plugging a gap between the furnace body and the furnace cover, the furnace body, the furnace cover and the furnace lining form a sealed whole, and the furnace cover plays a role of sealing high-temperature smoke generated in the smelting process.
The high temperature smelted in the furnace body can be transferred to the furnace cover and the furnace lining, and the high-temperature flue gas generated in smelting often contains corrosivity, so that the furnace lining is not only in a high-temperature dusty ring mirror, but also is corroded by various corrosive gases, and in addition, the influence of various stress actions and strong magnetic field induction is also generated, and the working condition of the furnace lining is very severe. Therefore, the furnace lining of the totally-enclosed submerged arc furnace in smelting production often falls off and is damaged, and the normal operation of production is influenced because the totally-enclosed submerged arc furnace is not sealed due to the problems of the falling off and the damage of the furnace lining and the like. Particularly, the furnace linings in the triangular areas near the electrode columns are disturbed by the frequently-gushed high-temperature slag, the falling of the furnace linings is easy to happen, and the furnace linings are seriously abraded, ablated and damaged due to the lack of the protection of the furnace linings, so that the fallen furnace linings need to be timely maintained or replaced.
The adopted method for repairing or replacing the furnace lining is as follows: the furnace cover with the damaged furnace lining is detached from the furnace body together with the furnace lining, the furnace cover is turned over and placed on a furnace lining ramming platform in an upward mode, then the damaged furnace lining is chiseled, and a new furnace lining is rammed again. After the furnace lining repairing operation is finished, the newly repaired furnace lining is required to be roasted to remove the moisture in the furnace lining material; finally, the furnace cover is remounted on the ore-smelting furnace body. The maintenance process takes time for a long time, the period is long, the construction is complicated, the submerged arc furnace is required to be stopped to be used in the period, the normal production of the submerged arc furnace is influenced, and the economic loss before the recovery of the production is large. That is, in such a case, the furnace must be stopped for a long time to repair the damaged furnace lining, and the long-time production stoppage affects the economic benefit of the ore smelting.
Disclosure of Invention
In order to solve the technical problem, the invention provides a furnace lining module which comprises an anchoring piece and a furnace lining material, wherein the main body of the anchoring piece is a hollow heat-resistant pipe, the anchoring piece is arranged in the furnace lining material, the outer surface of the anchoring piece is completely combined with the furnace lining material to form a block, and the end of the anchoring piece is flush with the surface of the furnace lining material.
Preferably, the lining module is a square block.
Preferably, the anchor is located in the centre of the block.
Preferably, the lining material is corundum lining material.
Preferably, the outer side surface of the hollow heat-resistant pipe of the anchoring piece is provided with a fixing fork, and the fixing fork is completely embedded in a lining material.
Further, the bundle fixing fork is arranged on the outer side surface of the hollow heat-resistant pipe in a tree root mode.
The invention also provides a method for repairing damaged furnace lining of the totally-enclosed submerged arc furnace, which comprises the following steps:
the method comprises the following steps: prefabricating a lining module according to claim 1 in advance for later use, wherein the method comprises the steps of placing a shaping template, fixing an anchoring piece in the shaping template, tamping corundum lining materials by the shaping template, enabling the corundum lining materials and the anchoring piece to be completely combined to form a shaped block, then removing the template, and baking and dehydrating the block;
step two: cleaning the damaged part of the furnace lining, wherein under the condition that a furnace cover is not detached, constructors enter the furnace to chive the damaged part of the furnace lining;
step three: installing a furnace lining module, wherein the furnace lining module is arranged at a damaged part of the furnace lining, welding operation is carried out from a hollow part of an anchoring piece, and the end of the anchoring piece is welded and fixed with a furnace cover, so that the furnace lining module and the furnace cover are integrated;
step four: and plugging, namely plugging the hollow part of the anchoring piece and a gap of a damaged furnace lining part at the periphery of the furnace lining module by corundum furnace lining material so that the furnace lining is complete and forms a sealed whole with the furnace cover.
Preferably, in the step one, the prefabricated furnace lining module shape is determined according to the furnace lining condition of the totally-enclosed submerged arc furnace.
Preferably, in the first step, the root-type arrangement is firstly welded on the outer side surface of the hollow heat-resistant pipe of the anchoring piece.
Preferably, in the third step, the number of the furnace lining modules to be placed is determined according to the size of the damaged part of the furnace lining.
The furnace lining module can be prefabricated in advance by adopting easily available materials, and the furnace lining module is used for repairing the fallen and damaged furnace lining without detaching a furnace cover, so that the efficiency is improved, and the maintenance time and the influence on the production are reduced. The invention fully utilizes the characteristics and the structural characteristics of the furnace cover and the furnace lining, and considers that the furnace lining at the edge of the furnace cover is easy to drop and damage, the modular furnace lining module is prefabricated in advance for maintenance, the time required by the processes of forming, baking and dehydrating the furnace lining is taken out, the furnace cover and the furnace lining do not need to be moved out of the furnace body during maintenance by adopting the furnace lining module, the maintenance efficiency is improved, the time required by the maintenance process of the furnace lining at the edge of the furnace cover is shortened, the production stop maintenance time is greatly reduced, and the adverse effect on the production is reduced. The equipment and materials used by the invention are easy to obtain and manufacture, and the cost is saved.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a furnace lining module according to the present invention;
FIG. 2 is a schematic perspective view of an embodiment of the furnace lining module and furnace lid of FIG. 1;
FIG. 3 is a flowchart of an embodiment of the method for repairing damaged furnace lining of a totally-enclosed submerged arc furnace according to the present invention.
In the figure: 1-a furnace lining module, 101-an anchoring piece, 102-a furnace lining material, and 103-a binding fork; 2-furnace cover; 3-furnace lining.
Detailed Description
To further illustrate the technical means and effects of the present invention to solve the technical problems, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments, which are provided for illustrative purposes and are not drawn to scale or scale completely, and therefore, the accompanying drawings and specific embodiments are not limited to the protection scope of the present invention.
An alternative embodiment of the lining module shown in fig. 1 includes an anchoring member 101 and a lining material 102, where the anchoring member 101 includes a hollow heat-resistant pipe and a fixing fork 103, the fixing fork 103 is arranged on an outer side surface of the hollow heat-resistant pipe in a tree-root manner, and the lining material 102 may be a corundum lining material; the anchoring piece 101 is arranged in the furnace lining material 102, the outer surface of the anchoring piece 101 is completely combined with the furnace lining material 102 to form a square block, the anchoring piece 101 is positioned in the center of the block, the fixing fork 103 is completely embedded in the furnace lining material 102, and the end of the anchoring piece 101 is flush with the surface of the block.
As shown in fig. 2, an alternative embodiment of the connection of the furnace lining module and the furnace cover is characterized in that a prefabricated furnace lining module 1 is adopted to repair a damaged part of a furnace lining 3 below a furnace cover 2, the furnace lining module 1 is arranged on the damaged part of the furnace lining 3, welding operation is carried out from the hollow part of a heat-resistant pipe of an anchoring piece 101, and the end of the anchoring piece 101 is welded and fixed with the furnace cover 2, so that the furnace lining module 1 and the furnace cover 2 are integrated.
The flow of the alternative embodiment of the totally-enclosed submerged arc furnace lining damage repairing method shown in fig. 3 comprises the following steps:
the method comprises the following steps: prefabricating the furnace lining module in advance for later use, wherein the method comprises the steps of placing a shaping template, fixing an anchoring piece in the shaping template, tamping corundum furnace lining materials by using the shaping template to enable the corundum furnace lining materials to be completely combined with the anchoring piece, removing the template after forming a shaped block, and baking and dehydrating the block; the prefabricated furnace lining module can be a square block or a block with other shapes; the size of the furnace lining module can be selected according to different requirements, in order to enable the furnace lining material to be combined with the anchoring piece more firmly, the tree root type arrangement welding and fixing branches can be arranged on the outer side surface of the hollow heat-resistant pipe of the anchoring piece, all the tree root type arrangement fixing branches are stuck into the furnace lining material, and the furnace lining material cannot be separated from the anchoring piece;
step two: cleaning the damaged part of the furnace lining; under the condition of not removing a furnace cover, a constructor enters the furnace to operate to chisel off the damaged part of a furnace lining;
step three: installing a furnace lining module, wherein the furnace lining module prefabricated in advance in the step one is placed on a damaged part of the furnace lining for filling, and the end of an anchoring piece is welded and fixed with a furnace cover from a hollow part of the anchoring piece, so that the furnace lining module and the furnace cover are integrated; determining the number of the placed furnace lining modules according to the size of the damaged part of the furnace lining;
step four: and plugging, namely plugging the hollow part of the anchoring piece and a gap of a damaged furnace lining part at the periphery of the furnace lining module by corundum furnace lining material so that the furnace lining is complete and forms a sealed whole with the furnace cover.
Of course, the invention can also have other various embodiments, for example, the material for manufacturing the furnace lining module can adopt other refractory materials, the material used for the fourth plugging of the step of the full-closed submerged arc furnace lining damage repairing method can also have other choices, and the like; various modifications and changes may be made by those skilled in the art without departing from the spirit and substance of the invention, and these modifications and changes are within the scope of the claims.
Claims (9)
1. A full-closed submerged arc furnace lining damage repairing method is characterized in that: the method comprises the following steps:
the method comprises the following steps: prefabricating a furnace lining module for later use in advance, wherein the prefabricating comprises the steps of placing a shaping template, fixing an anchoring piece in the shaping template, tamping corundum furnace lining materials by using the shaping template to enable the corundum furnace lining materials to be completely combined with the anchoring piece, removing the template after forming a shaped block, and baking and dehydrating the block;
step two: cleaning the damaged part of the furnace lining, wherein under the condition that a furnace cover is not detached, constructors enter the furnace to chive the damaged part of the furnace lining;
step three: installing a furnace lining module, wherein the furnace lining module is arranged at a damaged part of the furnace lining, welding operation is carried out from a hollow part of an anchoring piece, and the end of the anchoring piece is welded and fixed with a furnace cover, so that the furnace lining module and the furnace cover are integrated;
step four: and plugging, namely plugging the hollow part of the anchoring piece and a gap of a damaged furnace lining part at the periphery of the furnace lining module by corundum furnace lining material so that the furnace lining is complete and forms a sealed whole with the furnace cover.
2. The method for repairing the damage of the lining of the totally-enclosed submerged arc furnace according to claim 1, wherein: in the first step, the shape of the prefabricated furnace lining module is determined according to the furnace lining condition of the totally-enclosed submerged arc furnace.
3. The method for repairing the damage of the lining of the totally-enclosed submerged arc furnace according to claim 1, wherein: in the first step, a root type arrangement is arranged on the outer side surface of the hollow heat-resistant pipe of the anchoring part, and a binding fork is welded.
4. The method for repairing the damage of the lining of the totally-enclosed submerged arc furnace according to claim 1, wherein: and in the third step, determining the number of the furnace lining modules according to the size of the damaged part of the furnace lining.
5. A furnace lining module applying the method for repairing the damage of the totally-enclosed submerged arc furnace lining according to claim 1, wherein the method comprises the following steps: used for repairing the damaged part of the furnace lining of the smelting furnace; the furnace lining module comprises an anchoring piece and a furnace lining material, wherein the anchoring piece main body is a hollow heat-resistant pipe, and the hollow part of the anchoring piece is welded; the anchoring piece is arranged in the furnace lining material, the outer surface of the anchoring piece is completely combined with the furnace lining material to form a block, and the end of the anchoring piece is flush with the surface of the furnace lining material; the furnace lining material is corundum furnace lining material.
6. The lining module of claim 5, wherein: the furnace lining module is a square block.
7. The lining module of claim 5, wherein: the anchor is located in the center of the block.
8. The lining module of claim 5, wherein: the outer side surface of the hollow heat-resistant pipe of the anchoring piece is provided with a fixing fork, and the fixing fork is completely embedded into a furnace lining material.
9. The lining module of claim 8, wherein: the bundle fixing fork is arranged on the outer side surface of the hollow heat-resistant pipe in a tree root mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393952.7A CN110260660B (en) | 2019-05-13 | 2019-05-13 | Furnace lining module and full-closed submerged arc furnace lining damage repairing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393952.7A CN110260660B (en) | 2019-05-13 | 2019-05-13 | Furnace lining module and full-closed submerged arc furnace lining damage repairing method |
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| CN110260660A CN110260660A (en) | 2019-09-20 |
| CN110260660B true CN110260660B (en) | 2021-02-26 |
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| CN201910393952.7A Active CN110260660B (en) | 2019-05-13 | 2019-05-13 | Furnace lining module and full-closed submerged arc furnace lining damage repairing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5349796Y2 (en) * | 1974-01-10 | 1978-11-29 | ||
| WO2018035823A1 (en) * | 2016-08-25 | 2018-03-01 | 朱子毅 | Thermal insulation member |
| CN106679427A (en) * | 2016-12-29 | 2017-05-17 | 安徽芜湖海螺建筑安装工程有限责任公司 | Construction method for refractory material of kiln opening of rotary cement kiln |
| CN206919671U (en) * | 2017-05-24 | 2018-01-23 | 武汉钢铁有限公司 | A kind of sintering ignition furnace crossbeam prefabricated component |
| CN208155061U (en) * | 2018-02-06 | 2018-11-27 | 北京嘉永会通能源科技有限公司 | Fire-resistant prefabricated member and industrial furnace masonry construction for industrial furnace |
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