CN114774607B - Furnace bottom structure of hot blast furnace and welding method thereof - Google Patents
Furnace bottom structure of hot blast furnace and welding method thereof Download PDFInfo
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- CN114774607B CN114774607B CN202210434820.6A CN202210434820A CN114774607B CN 114774607 B CN114774607 B CN 114774607B CN 202210434820 A CN202210434820 A CN 202210434820A CN 114774607 B CN114774607 B CN 114774607B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/02—Brick hot-blast stoves
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Abstract
The application relates to a bottom structure of a hot blast stove, which relates to the technical field of hot blast stove structures and comprises a stove body and a plurality of partition plates, wherein the partition plates are fixedly connected to the bottom surface outside the stove body and used for supporting the stove body, the partition plates are used for partitioning the bottom surface of the stove body into a plurality of cavities which are not communicated with each other, filling heat insulation pieces are arranged in the cavities between the partition plates, the filling heat insulation pieces are used for plugging holes at the bottom of the stove body, and the probability of leakage of hot gas in the stove body from the holes to the outside of the stove body is reduced. The application has the effect of reducing the cost required by welding the bottom of the hot blast stove.
Description
Technical Field
The application relates to the technical field of hot blast stove structures, in particular to a hot blast stove bottom structure and a welding method thereof.
Background
The hot blast stove is a device for supplying hot air to a blast furnace by burning fuel. The hot air is introduced into the blast furnace, so that the heat utilization rate and the heat working effect can be improved, and the hot air furnace has wide application in industry.
The related hot-blast furnace stove bottom structure includes furnace body, concrete base and filling heat insulating part, and concrete base forms through pouring cement mortar subaerial, and concrete base is used for supporting the stove bottom, and the furnace body setting is on concrete base, and the bottom butt of furnace body is on concrete base, fills the heat insulating part and can set up to planting the muscle and glues, and planting the muscle and glues and be used for shutoff furnace body and concrete base between the space. After the service time of the furnace body is longer, holes can be formed in the bottom of the furnace body, hot air in the furnace body leaks at the moment, and the quantity of the hot air emitted in the furnace body can be reduced by arranging a filling heat insulation part on the outer wall of the furnace body. The user can be through destroying the packing heat insulating part of furnace body below and hoist the furnace body to carry out welding work to the furnace body bottom, reach the effect of shutoff furnace body hole.
The related technical scheme has the following defects: the area of the bottom of the furnace body is larger, the consumption of the filling heat insulation part required by the installation of the furnace body is larger, and when welding work is carried out, the filling heat insulation part which needs to be destroyed and removed has a larger part of intact performance, thereby causing waste and improving the cost required by the welding work.
Disclosure of Invention
In order to reduce the cost required by welding the bottom of the hot blast stove, the application provides a bottom structure of the hot blast stove and a welding method thereof.
The application provides a furnace bottom structure of a hot blast furnace, which adopts the following technical scheme:
the utility model provides a stove bottom structure of hot-blast furnace, includes furnace body and a plurality of division board, division board fixed connection is on the external bottom surface of furnace body, and the division board is used for supporting the furnace body, and the division board is used for separating the furnace body bottom surface into a plurality of cavity that are each other UNICOM, is provided with the packing heat insulating part in the cavity between the division board, fills the hole that the heat insulating part is used for shutoff furnace body bottom, reduces the internal steam of furnace and leaks the probability outside the furnace body from the hole.
Through adopting above-mentioned technical scheme, through setting up the division board in the furnace body bottom, a plurality of division boards can form a plurality of cavitys in the furnace body bottom, the user can set up the packing heat insulating part in the cavity between the division board, after the furnace body bottom produced the hole, the packing heat insulating part of hole place plays the effect of shutoff hole, can reduce the probability that steam is scattered in the furnace body, after the hole produced, the user can make the hole expose through the packing heat insulating part of getting rid of hole place, and then the convenience of use personnel carries out the weldment work, after the weldment work, the user can set up the packing heat insulating part again between the division board, the volume reduction of the packing heat insulating part that needs to detach during the welding, the volume correspondence of the packing heat insulating part that resets reduces, can reduce hot-blast furnace stove bottom welding required cost.
Optionally, a bottom plate is arranged on the outer side wall of the furnace body, the separation plate extends to the outside of the furnace body along the bottom surface of the furnace body, the bottom plate is fixedly connected with the separation plate, and the bottom of the furnace body, the bottom plate, the separation plate and the ground enclose a cavity structure.
Through adopting above-mentioned technical scheme, through being equipped with the bottom plate outside the furnace body, make the division board extend to outside the furnace body to the convenience of use personnel carries out welding work in the furnace body bottom outside, promotes the space that carries out welding work.
Optionally, the bottom of the furnace body is provided with a base, the base is formed by pouring and solidifying cement mortar, and one side, far away from the furnace body, of the partition plate is abutted on the base.
Through adopting above-mentioned technical scheme, through setting up the base in the furnace body bottom, make the base can support the furnace body, promote the stability of furnace body, through setting up the furnace body on the base, make the furnace body bottom rise, further the convenient use person clearance furnace body bottom fill the heat insulating part and repair the work.
Optionally, a pouring table is arranged on the base, the pouring table is formed by solidifying cement mortar, and the cement mortar floods one side of the partition plate far away from the furnace body and is solidified to form the pouring table.
Through adopting above-mentioned technical scheme, through setting up the pouring platform on the base, make the pouring platform solidify through cement mortar and form, after cement mortar inundates the division board, cement mortar solidifies the pouring platform that forms and can be with division board zonulae occludens, and then promotes the leakproofness between pouring platform and the division board, can reduce the probability that steam in the furnace body looses to the external environment from the furnace body bottom.
Optionally, a plugging plate is arranged between adjacent partition plates, and is used for plugging the space between the two partition plates and covering the filling heat insulation member.
Through adopting above-mentioned technical scheme, through setting up the shutoff board between the division board, make the shutoff board can be with filling the cavity of heat insulating part shutoff between the division board to reduce the steam and follow the furnace body bottom after dispelling, further destroy the probability of filling the heat insulating part and dispelling to external environment in, the shutoff board can play the effect of protection filling the heat insulating part, can reduce external liquid and air and to filling the harmful effects that the heat insulating part caused.
Optionally, the edge of the plugging plate is provided with a sealing edge, the sealing edge is formed by solidifying thermosetting resin, and the sealing edge is used for plugging the gap between the partition plate and the plugging plate.
Through adopting above-mentioned technical scheme, through setting up the sealing edge on the shutoff board, after the shutoff board is installed between the division board, the user can pour into thermosetting resin into between division board and shutoff board, and then makes the clearance of shutoff division board and shutoff board after the thermosetting resin solidifies, reaches the effect that makes shutoff board and division board sealing connection.
Optionally, the plugging plate is provided with ventilation holes, the ventilation holes penetrate through the plugging plate, and the plugging plate is connected with a flow detector for detecting the flow of gas flowing through the ventilation holes.
Through adopting above-mentioned technical scheme, through seting up the bleeder vent on the shutoff board, set up flow detector on the bleeder vent, and then make flow detector can show the flow of the gas through the bleeder vent, after the furnace body bottom produced the hole, the steam in the furnace body can destroy and fill the heat-proof component and flow out from the bleeder vent, produces the reading on the flow detector this moment, and the user can judge the position of furnace body bottom hole place through flow detector, and then the convenience of use person repair the furnace body.
The welding method of the bottom structure of the hot blast stove provided by the application adopts the following technical scheme:
a welding method of a furnace bottom structure of a hot blast furnace comprises the following steps:
s1: pouring a base on the ground, welding a partition plate at the bottom of the furnace body, hoisting the furnace body to the base, and enabling the partition plate to prop against the base;
s2: setting a template on a base, pouring cement mortar on the base, submerging the bottom of the partition plate by the cement mortar, and solidifying the cement mortar to form a pouring table;
s3: filling heat insulation pieces are injected between the partition plates, and a plugging plate is arranged between the partition plates, so that the plugging plate is propped against the filling heat insulation pieces;
s4: a sealing edge is arranged at the edge of the plugging plate, so that the plugging plate is in sealing connection with the partition plate;
s5: when holes are formed in the bottom of the furnace body, removing the plugging plate and the filling heat insulation piece, and performing welding work in the space between the partition plates to plug the holes of the furnace body;
s6: and resetting the filling heat insulating piece, reinstalling the plugging plates between the partition plates, and arranging sealing edges.
Through adopting above-mentioned technical scheme, through setting up a plurality of division boards in the furnace body below, the user can at first take off the shutoff board and clear up the packing heat insulating part that the shutoff board corresponds when repairing, and then make the hole of furnace body bottom expose, after the user welds and repairs, can set up the packing heat insulating part again between the division board to the volume of the packing heat insulating part that makes the welding work consume is less, and then reduces the welding work cost of furnace body bottom.
A welding method of a furnace bottom structure of a hot blast furnace comprises the following steps:
s1: pouring a base on the ground, welding a partition plate at the bottom of the furnace body, hoisting the furnace body to the base, and enabling the partition plate to prop against the base;
s2: setting a template on a base, pouring cement mortar on the base, submerging the bottom of the partition plate by the cement mortar, and solidifying the cement mortar to form a pouring table;
s3: filling heat insulation pieces are injected between the partition plates, and a plugging plate is arranged between the partition plates, so that the plugging plate is propped against the filling heat insulation pieces;
s4: a sealing edge is arranged at the edge of the plugging plate, so that the plugging plate is in sealing connection with the partition plate;
s51: judging the position of a hole at the bottom of the furnace body by observing the data of the flow detector on each plugging plate;
s52: removing the plugging plate with the flow detector with the reading change, destroying the filling heat insulation piece corresponding to the position of the plugging plate, performing welding work in the space between the partition plates, and plugging the hole of the furnace body;
s6: and resetting the filling heat insulating piece, reinstalling the plugging plates between the partition plates, and arranging sealing edges.
Through adopting above-mentioned technical scheme, through seting up the bleeder vent on the shutoff board, set up flow detector on the shutoff board, when flow detector appears the reading, the furnace body bottom that the flow detector was located produces the hole, and the steam destroys and fills the heat insulating part, makes to fill the unable shutoff hole of heat insulating part, and the user can repair the hole and reset to fill the heat insulating part this moment, further makes things convenient for the user to seek the position that the hole is located.
In summary, the beneficial technical effects of the application are as follows:
1. through setting up the division board in furnace body lower bottom, a plurality of division boards can form a plurality of cavitys in furnace body lower bottom, the user can set up the packing heat insulating part in the cavity between the division board, after the furnace body bottom produced the hole, the packing heat insulating part of hole place plays the effect of shutoff hole, can reduce the probability that steam in the furnace body looses, after the hole produced, the user can make the hole expose through the packing heat insulating part of getting rid of hole place, and then the convenience user carries out welding work, after the welding work is finished, the user can set up the packing heat insulating part again between the division board, the volume of the packing heat insulating part that needs to be got rid of during the welding reduces, the volume correspondence of the packing heat insulating part that resets reduces, can reduce the required cost of hot-blast furnace bottom welding;
2. the pouring table is arranged on the base, so that the pouring table is formed by solidifying cement mortar, after the cement mortar floods the partition plate, the pouring table formed by solidifying the cement mortar can be tightly connected with the partition plate, the tightness between the pouring table and the partition plate is further improved, and the probability that hot air in the furnace body is dispersed from the bottom of the furnace body to the external environment can be reduced;
3. through seting up the bleeder vent on the shutoff board, set up flow detector on the bleeder vent, and then make flow detector can show the flow of the gas through the bleeder vent, after the hole was produced to the furnace body bottom, the steam in the furnace body can destroy and fill the heat-proof spare and flow out from the bleeder vent, produces the reading on the flow detector this moment, and the user can judge the position of furnace body bottom hole place through flow detector, and then the person of facilitating the use repair furnace body.
Drawings
FIG. 1 is a schematic diagram of a furnace body according to an embodiment of the present application.
Fig. 2 is a schematic structural view of a partition plate according to an embodiment of the present application.
Fig. 3 is a schematic view of the structure of the partition plate and the packing insulation according to the embodiment of the present application.
Fig. 4 is a schematic structural view of a plugging plate according to an embodiment of the present application.
FIG. 5 is a schematic view of the structure of a furnace body and sealing edges according to an embodiment of the present application.
Reference numerals: 1. a furnace body; 2. a bottom plate; 3. a partition plate; 4. a base; 5. pouring a platform; 6. filling the heat insulation member; 7. a plugging plate; 71. ventilation holes; 72. a flow detector; 8. sealing edges.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment of the application discloses a furnace bottom structure of a hot blast furnace. Referring to fig. 1, 2 and 3, the furnace comprises a furnace body 1, wherein the furnace body 1 is used for placing fuel and burning. The furnace body 1 sets up to cylindrical barrel structure, and the bottom of furnace body 1 is leveled, is provided with bottom plate 2 on the outer wall of furnace body 1 bottom, and bottom plate 2 is circular flat plate structure, and bottom plate 2 passes through welded fastening in furnace body 1 bottom. A plurality of division plates 3 are welded and fixed on the outer bottom surface of the furnace body 1, the division plates 3 are of rectangular flat plate structures, the division plates 3 are perpendicular to the bottom surface of the furnace body 1, and the division plates 3 are arranged along the circumference of the furnace body 1. One end of the partition plate 3 coincides with the center of the furnace body 1, and the other end extends to the outer edge of the bottom plate 2. One side of each partition plate 3 far away from the furnace body 1 is used for propping against the ground, a cavity is formed among two adjacent partition plates 3, the bottom plate 2 and the ground, and a plurality of cavities are formed by dividing a plurality of partition plates 3 at the lower bottom of the furnace body 1. The cavities between the partition plates 3 are filled with filling heat insulation pieces 6, and the filling heat insulation pieces 6 can be formed by filling and solidifying reinforced glue. The filling heat insulation piece 6 is used for blocking the cavity between the partition plates 3, when holes are generated at the bottom of the furnace body 1 due to high temperature, the filling heat insulation piece 6 plays roles of blocking the holes and insulating heat, and the probability that high-temperature gas in the furnace body 1 is scattered outside the furnace body 1 can be reduced. Through the space of separating in the bottom under furnace body 1, the user can be according to the position that furnace body 1 bottom produced the hole, clear away the packing heat insulating part 6 between two division boards 3 that the hole is located and carry out welding work, then reset packing heat insulating part 6, reach the effect that reduces the volume of consuming packing heat insulating part 6 in the welding process, can reduce welding work's cost.
Referring to fig. 1 and 2, a base 4 is provided under the furnace body 1, the base 4 is formed by casting concrete, the base 4 is provided in a cylindrical structure, and one side of the partition plate 3 away from the furnace body 1 is fixed to the base 4. Through setting up base 4 in furnace body 1 below, make the lower bottom of furnace body 1 be higher than ground setting, the convenient use person clears away the packing heat insulating part 6 of furnace body 1 lower bottom and arranges packing heat insulating part 6.
Referring to fig. 1 and 2, a casting table 5 is provided on a base 4, and the casting table 5 is formed by casting and solidifying cement mortar. When a user lifts the furnace body 1 onto the base 4, the bottom of the partition plate 3 is abutted to the base 4, and the user sets up a template on the base 4 and pours to form a pouring table 5, so that cement mortar can submerge the lower side of the partition plate 3, and further the pouring table 5 can be in sealing connection with the partition plate 3 after solidification, and the tightness of a cavity between the partition plates 3 is improved.
Referring to fig. 3 and 4, the furnace body 1 is detachably connected with a plugging plate 7, the plugging plate 7 is arranged into an arc-shaped plate structure, and the plugging plate 7 is positioned between two adjacent separation plates 3. After the filling heat insulation piece 6 is filled between the separation plates 3 by a user, the plugging plate 7 can be plugged between the two separation plates 3, so that the sealing and heat insulation effects are achieved, and the quantity of hot air emitted after holes are formed in the bottom of the furnace body 1 can be reduced.
Referring to fig. 5, a sealing edge 8 is provided on a furnace body 1, and the sealing edge 8 is formed by applying and solidifying a thermosetting resin. The sealing edge 8 is arranged on the outer side surface of the plugging plate 7 and is positioned at the gap between the partition plate 3 and the plugging plate 7. After the blocking plates 7 are installed between the partition plates 3, a user can block the gaps between the partition plates 3 and the blocking plates 7 by using thermosetting resin, so that the probability that hot air is scattered from the gaps between the blocking plates 7 and the partition plates 3 through the filling heat insulating member 6 is reduced.
Referring to fig. 3 and 4, the blocking plate 7 is provided with a vent 71, the vent 71 is provided at the middle of the blocking plate 7, the vent 71 penetrates the blocking plate 7, the vent 71 is used for allowing gas to pass through the blocking plate 7, the blocking plate 7 is provided with a flow detector 72, an air inlet of the flow detector 72 is communicated with the vent 71, and the flow detector 72 is used for detecting the amount of gas flowing out of the vent 71. When the hole is produced in the bottom of the furnace body 1, the filling heat insulating piece 6 is used for plugging hot air in the furnace body 1 at first, after the filling heat insulating piece 6 fails, the hot air is dispersed out through the air holes 71, and a user can know the position produced by the hole in the bottom of the furnace body 1 through the flow detector 72, so that the user can conveniently unload the plugging plate 7 and destroy the filling heat insulating piece 6, and the work of plugging the hole in the bottom of the furnace body 1 is performed. When the hole in the bottom of the furnace body 1 is large, a user can break the pouring table 5 to disconnect the furnace body 1 from the base 4, and at the moment, the user can move the furnace body 1 and perform welding repair work.
The implementation principle of the embodiment of the application is as follows: through setting up division board 3 in furnace body 1 outer bottom, make division board 3 evenly separate into a plurality of regions with furnace body 1 lower part, the user sets up filling heat insulating part 6 in the cavity between division board 3, and the user can be according to the damage degree in the different regions of furnace body 1 bottom, and the welding work in hole is carried out to the filling heat insulating part 6 of different positions of pertinence change, can reduce the raw and other materials that consume in the welding work, and then reduce the cost.
The embodiment of the application discloses a welding method of a furnace bottom of a hot blast stove, which comprises the following steps:
s1: pouring a base 4 on the ground, welding a partition plate 3 at the bottom of the furnace body 1, hoisting the furnace body 1 to the base 4, and enabling the partition plate 3 to prop against the base 4;
s2: setting a template on a base 4, pouring cement mortar on the base 4, submerging the bottom of a partition plate 3 by the cement mortar, and solidifying the cement mortar to form a pouring table 5;
s3: filling heat insulation pieces 6 are injected between the partition plates 3, and a plugging plate 7 is arranged between the partition plates 3, so that the plugging plate 7 butts against the filling heat insulation pieces 6;
s4: sealing edges 8 are arranged at the edges of the plugging plates 7, so that the plugging plates 7 are in sealing connection with the partition plates 3;
s5: when holes are formed in the bottom of the furnace body 1, removing the plugging plate 7 and the filling heat insulation member 6, and performing welding work in the space between the partition plates 3 to plug the holes of the furnace body 1;
s6: the packing insulator 6 is replaced, the plugging plate 7 is reinstalled between the separation plates 3, and the sealing edges 8 are provided.
Further, in step S5, S5 includes S51 and S52:
s51: judging the position of a hole at the bottom of the furnace body 1 by observing the data of the flow detector 72 on each plugging plate 7;
s52: the plugging plate 7 with the flow detector 72 with the reading change is removed, the filling heat insulation member 6 corresponding to the position of the plugging plate 7 is destroyed, welding work is performed in the space between the partition plates 3, and the hole of the furnace body 1 is plugged.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. The utility model provides a stove bottom structure which characterized in that: the cement mortar pouring device comprises a furnace body (1) and a plurality of partition boards (3), wherein the partition boards (3) are fixedly connected to the outer bottom surface of the furnace body (1), the partition boards (3) are used for supporting the furnace body (1), the bottom surface of the furnace body (1) is divided into a plurality of cavities which are not communicated with each other, filling heat insulation pieces (6) are arranged in the cavities between the partition boards (3), the filling heat insulation pieces (6) are used for plugging holes at the bottom of the furnace body (1), the probability that hot air leaks from the holes to the outer side of the furnace body (1) in the furnace body (1) is reduced, the partition boards (3) are of rectangular flat plate structures, the partition boards (3) are perpendicular to the bottom surface of the furnace body (1), the partition boards (3) are arranged along the circumference of the furnace body (1), one end of each partition board (3) coincides with the center of the furnace body (1), the other end of each partition board extends to the outer edge of the bottom board (2), the bottom board (2) is arranged on the outer side wall of the furnace body (1), the partition boards (3) extend to the outer side of the furnace body (1) along the bottom surface of the furnace body (1), the bottom board (2) is fixedly connected with the partition boards (3), the bottom board (1), the bottom boards (3) are fixedly connected with the partition boards (1), the bottom (3) and the bottom (1) through a base (4), the base (4) and the mortar pouring structure, one side butt that keeps away from furnace body (1) on division board (3) is on base (4), be provided with on base (4) and pour platform (5), pour platform (5) and solidify through cement mortar and form, cement mortar submerges one side that keeps away from furnace body (1) on division board (3) and solidifies and form and pour platform (5), adjacent be provided with shutoff board (7) between division board (3), shutoff board (7) are used for shutoff space between two division boards (3) and cover and fill insulating member (6), shutoff board (7) edge is provided with sealing edge (8), sealing edge (8) solidify through thermosetting resin and form, sealing edge (8) are used for shutoff division board (3) and shutoff board (7) clearance, set up bleeder vent (71) on shutoff board (7), bleeder vent (71) run through shutoff board (7), be connected with flow detector (72) on shutoff board (7), flow detector (72) are used for detecting the gas flow who flows through bleeder vent (71).
2. A method of welding a stove bottom structure according to claim 1, wherein: the method comprises the following steps:
s1: pouring a base (4) on the ground, welding a partition plate (3) at the bottom of the furnace body (1), hoisting the furnace body (1) to the base (4), and enabling the partition plate (3) to prop against the base (4);
s2: setting a template on a base (4), pouring cement mortar on the base (4), submerging the bottom of the partition plate (3) by the cement mortar, and solidifying the cement mortar to form a pouring table (5);
s3: filling heat insulation pieces (6) are injected between the partition plates (3), and a plugging plate (7) is arranged between the partition plates (3) so that the plugging plate (7) is propped against the filling heat insulation pieces (6);
s4: a sealing edge (8) is arranged at the edge of the plugging plate (7) to enable the plugging plate (7) to be in sealing connection with the partition plate (3);
s5: when holes are formed in the bottom of the furnace body (1), removing the plugging plate (7) and removing the filling heat insulation piece (6), and performing welding work in the space between the partition plates (3) to plug the holes of the furnace body (1);
s6: the filling heat insulator (6) is reset, the plugging plate (7) is reinstalled between the separation plates (3), and the sealing edges (8) are arranged.
3. A method of welding a stove bottom structure according to claim 2, wherein: the method comprises the following steps:
s1: pouring a base (4) on the ground, welding a partition plate (3) at the bottom of the furnace body (1), hoisting the furnace body (1) to the base (4), and enabling the partition plate (3) to prop against the base (4);
s2: setting a template on a base (4), pouring cement mortar on the base (4), submerging the bottom of the partition plate (3) by the cement mortar, and solidifying the cement mortar to form a pouring table (5);
s3: filling heat insulation pieces (6) are injected between the partition plates (3), and a plugging plate (7) is arranged between the partition plates (3) so that the plugging plate (7) is propped against the filling heat insulation pieces (6);
s4: a sealing edge (8) is arranged at the edge of the plugging plate (7) to enable the plugging plate (7) to be in sealing connection with the partition plate (3);
s51: judging the position of a hole at the bottom of the furnace body (1) by observing the data of a flow detector (72) on each plugging plate (7);
s52: removing the plugging plate (7) with the flow detector (72) with the reading change, destroying the filling heat insulation piece (6) corresponding to the position of the plugging plate (7), performing welding work in the space between the separation plates (3), and plugging the holes of the furnace body (1);
s6: the filling heat insulator (6) is reset, the plugging plate (7) is reinstalled between the separation plates (3), and the sealing edges (8) are arranged.
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| CN202210434820.6A CN114774607B (en) | 2022-04-24 | 2022-04-24 | Furnace bottom structure of hot blast furnace and welding method thereof |
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| CN202210434820.6A CN114774607B (en) | 2022-04-24 | 2022-04-24 | Furnace bottom structure of hot blast furnace and welding method thereof |
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| CN114774607B true CN114774607B (en) | 2023-09-15 |
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