CN112815712A - Local maintenance method for flash furnace bottom arch foot brick - Google Patents
Local maintenance method for flash furnace bottom arch foot brick Download PDFInfo
- Publication number
- CN112815712A CN112815712A CN202110166648.6A CN202110166648A CN112815712A CN 112815712 A CN112815712 A CN 112815712A CN 202110166648 A CN202110166648 A CN 202110166648A CN 112815712 A CN112815712 A CN 112815712A
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- Prior art keywords
- gear
- arch springing
- brick
- motor
- seat
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- 239000011449 brick Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012423 maintenance Methods 0.000 title abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 244000309464 bull Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
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
- F27D1/0043—Floors, hearths
-
- 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
- F27D1/1694—Breaking away the lining or removing parts thereof
-
- 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
- F27D2001/0059—Construction elements of a furnace
- F27D2001/0066—Movable or removable parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a flash furnace bottom arch springing brick local maintenance method, which comprises the following steps: s1, building a support frame; s2, directly removing supporting objects such as steel plates, copper water jackets, steel beams and the like of the furnace wall of the arch foot brick in the area to be replaced, and removing the supporting objects to the position below the arch foot brick; s3, removing refractory bricks of the furnace wall above the area; s4, removing the damaged arch springing bricks; s5, removing the slag with the empty surface; and S6, replacing the arch springing bricks. The dismounting device comprises a front baffle, a rear baffle, a connecting column, a first motor and a second motor. The maintenance method is efficient, economical and scientific, and achieves the effect of safe operation by partially removing and replacing the arch springing bricks needing maintenance instead of completely removing and rebuilding the arch springing bricks when the flash furnace is subjected to cold maintenance, thereby greatly reducing the maintenance cost.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal metallurgical furnaces, in particular to a flash furnace bottom arch springing brick local maintenance method.
Background
In the production process of a flash furnace, when water leaks from a copper water jacket and a water cooling element above a furnace wall, water permeates from the upper part to a furnace bottom arch foot brick along the furnace wall, so that the furnace bottom arch foot brick is pulverized and deformed, and the original structure of a refractory brick is changed after the refractory brick is pulverized, thereby influencing the normal production. Referring to the overhaul case of flash furnace repair at home and abroad, the common method is to completely remove furnace bottom bricks and furnace bottom slag and then replace new bricks, so as to realize the health of equipment. The method is time-consuming, labor-consuming and economic and has high cost. From the condition of the cold repair of the conventional shutdown, the flash furnace is difficult to completely remove the bottom of the furnace because the arch springing brick area is formed with thick slag which is more than 1 meter thick after each shutdown, and the formed slag contains various metals. Under the condition of not influencing main part masonry structure, through the innovation maintenance mode, demolish the change to the hunch foot brick that has pulverized partially better sooner, it is very necessary to resume equipment health.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an overhauling method for locally replacing the flash furnace arch springing brick, and provides a feasible scheme for solving the problems of more economy, more time saving and more labor saving and the difficulty in production and operation of the flash furnace caused by the deformation and expansion of the arch springing brick.
The technical scheme of the invention is realized as follows:
a method for locally overhauling a flash furnace bottom arch springing brick is characterized by comprising the following steps:
s1, building a support frame;
s2, directly removing supporting objects such as steel plates, copper water jackets, steel beams and the like of the furnace wall of the arch foot brick in the area to be replaced, and removing the supporting objects to the position below the arch foot brick;
s3, removing refractory bricks of the furnace wall above the area;
s4, removing the damaged arch springing bricks;
s5, removing the slag with the empty surface;
s6, replacing the arch springing bricks; wherein,
the dismounting device is used for dismounting refractory bricks, arch springing bricks and slagging scorification and comprises a front baffle, a rear baffle, a connecting column, a first motor and a second motor, wherein the connecting column is used for connecting the front baffle with the rear baffle, a through hole is formed in the middle of the front baffle, the first motor and the second motor are arranged on the rear baffle, a first motor rod is arranged on the first motor, a first rotating seat and a second rotating seat are arranged on the rear baffle, the first motor rod is connected with the first rotating seat through a first belt, a screw rod is arranged between the front baffle and the rear baffle, the screw rod is positioned in the middle of the connecting column, one end of the screw rod is arranged on the connecting column, a first gear is arranged at the other end of the screw rod, the first gear is connected with the first rotating seat through a first gear belt, a push plate is arranged on the screw rod, and a fixed seat is also arranged on the rear baffle, the lower extreme at the push pedal is installed to the fixing base, the centre of fixing base has the second gear, the bull stick has in the middle of the second gear, the bull stick passes the push pedal and extends forward, the third gear has on the second roating seat, the second gear is connected with third gear engagement, still be equipped with third roating seat and fourth roating seat on the backplate, the fourth gear has on third roating seat and the fourth roating seat, the second roating seat passes through the second gear belt with the fourth gear and is connected, the second motor pole has on the second motor, the second motor pole passes through the second belt with the second roating seat and is connected.
In the invention, the rear baffle plate is provided with a first guide seat and a second guide seat, the first guide seat is provided with a first guide gear, the second guide seat is provided with a second guide gear, and the first guide gear and the second guide gear are connected with a second gear belt.
In the invention, the third rotating seat and the fourth rotating seat are provided with rotating parts, the rotating parts are provided with telescopic rods, telescopic cylinders, first universal joint heads and second universal joint heads, the telescopic rods are installed in the telescopic cylinders, one ends of the telescopic rods are connected to the third rotating seat and/or the second universal joint heads through the first universal joint heads, and the second universal joint heads are installed at one ends of the telescopic cylinders.
In the invention, the telescopic cylinder is provided with a stroke groove, the telescopic rod is provided with a pin shaft, and the pin shaft is arranged in the stroke groove.
In the invention, the horizontal distance from the arch springing brick to the slag bonding position is 300mm when the slag bonding position is removed, a face surface is formed, edges and corners of the arch springing brick are free from contact with other objects, and no joint is formed between the arch springing brick and the slag bonding position.
The maintenance method for locally replacing the flash furnace arch springing brick has the following beneficial effects: the maintenance method is efficient, economical and scientific, and achieves the effect of safe operation by partially removing and replacing the arch springing bricks needing maintenance instead of completely removing and rebuilding the arch springing bricks when the flash furnace is subjected to cold maintenance, thereby greatly reducing the maintenance cost.
The method of the invention reduces the maintenance difficulty of digging and repairing the arch springing bricks at the bottom of the flash furnace, so that the cold repair progress of the flash furnace is more controllable; and the slag is formed at the bottom of the furnace to form a hollow surface, no joint exists between the arch springing brick and the slag, the corner angle of the arch springing brick cannot be jacked up by the slag, the masonry quality is ensured, and the risk of copper infiltration after production is reduced.
Drawings
FIG. 1 is a view showing a flash furnace according to the present invention after shutdown;
FIG. 2 is a schematic view of the present invention with the arch springing bricks partially removed and replaced;
FIG. 3 is a state diagram of the process of FIG. 2 before removal of the hearth arch under bricks;
FIG. 4 is a schematic view of the demolition apparatus of the present invention;
FIG. 5 is another schematic view of the structure of FIG. 4;
FIG. 6 is a schematic view of a portion of the structure of FIG. 4;
FIG. 7 is another schematic view of the structure of FIG. 6;
FIG. 8 is a schematic view of a portion of the structure of FIG. 7;
FIG. 9 is another schematic view of the structure of FIG. 8;
fig. 10 is a schematic view of the rotating member of fig. 7.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in figures 1 to 10, the method for locally repairing the arch springing brick at the bottom of the flash furnace comprises the following steps:
s1, building a support frame;
s2, directly removing supporting objects such as steel plates, copper water jackets, steel beams and the like of the furnace wall of the arch foot brick in the area to be replaced, and removing the supporting objects to the position below the arch foot brick;
s3, removing refractory bricks of the furnace wall above the area;
s4, removing the damaged arch springing bricks 4;
s5, removing the slag 6 with the empty surface;
and S6, replacing the arch springing brick 4.
When the position of the slagging 6 is removed, the horizontal distance from the arch springing brick 4 is 300mm, a face empty surface is formed, edges and corners of the arch springing brick 4 are free from other objects, and no seam is formed between the arch springing brick 4 and the slagging 6. The arch springing bricks 4 have larger moving space when being dismantled and built, so that the arch springing bricks 4 and the slag 6 are prevented from forming a joint, the building quality is improved, and the risk of copper infiltration from the joint after the flash furnace is produced is reduced.
In a general maintenance scheme, after a flash furnace is produced and operated for many years, the periphery of a furnace body deforms seriously, shutdown maintenance is needed for safety operation, and the conventional method is to completely remove a furnace bottom brick 7 and slagging 6 and then build the furnace bottom brick 7 and an arch foot brick 4 again. The overhauling method provided by the invention is that the bricklaying of the arch springing bricks 4 is only carried out in a small range in a local area needing overhauling without completely dismantling and rebuilding the hearth.
During dismantling, due to production and operation of the flash furnace for many years, the slag at the bottom of the flash furnace is very thick, generally more than 1 meter, the slag is rich in metals such as copper, iron and the like, and is difficult to dismantle, and the local replacement of the arch springing bricks 4 is extremely difficult.
A common method for overhauling a flash furnace bottom arch springing brick is to open a plurality of inlet openings on a furnace shell steel plate 1 in a drawing 1, then remove a furnace wall brick 5 and a slagging material 6 thereon, then remove a copper water jacket fixing piece 2 and a copper water jacket 3, finally completely remove the furnace bottom slagging material 6 and a furnace bottom brick 7, and then re-build a new furnace bottom brick 7.
In fig. 2, the furnace shell steel plate 1 and the steel beam 111 are firstly removed to the lower part of the arch springing brick 4, namely, the furnace shell steel plate is cut off to the position of the identification line 8 at the bottom, then the furnace wall brick 5, the copper water jacket fixing piece 2 and the copper water jacket 3 are removed to the plane of the furnace bottom arch springing brick 4, and then the furnace bottom slagging 6 is removed, so that the horizontal distance between the furnace bottom slagging 6 and the furnace bottom arch springing brick 4 is about 300mm, and at the moment, a free face is formed between the furnace bottom slagging 6 and the arch springing brick 4, namely, fig. 3. In the figure 3, the powdered or damaged furnace bottom arch foot brick 4 is dismantled, and at the moment, the edge angle of the arch foot brick 4 is free from other objects, so that the arch foot brick 4 has a larger moving space during masonry, and the local replacement of the arch foot brick 4 is realized.
The demolition apparatus 10 is used for demolishing the refractory bricks, the arch support bricks 4 and the clinker 6. The demolition apparatus 10 includes a front bezel 11, a rear bezel 12, a connection column 13, a first motor 14, and a second motor 15. The connecting column 13 connects the front baffle 11 and the rear baffle 12, a through hole 16 is arranged in the middle of the front baffle 11, the first motor 14 and the second motor 15 are installed on the rear baffle 12, the first motor 14 is provided with a first motor rod 141, the rear baffle 12 is provided with a first rotating seat 17 and a second rotating seat 18, and the first motor rod 141 and the first rotating seat 17 are connected through a first belt 19.
A screw rod 20 is arranged between the front baffle 11 and the rear baffle 12, the screw rod 20 is positioned in the middle of the connecting column 13, one end of the screw rod 20 is installed on the connecting column 13, a first gear 21 is arranged at the other end of the screw rod 20, and the first gear 21 is connected with the first rotating seat 17 through a first gear belt 22.
The screw rod 20 is provided with a push plate 23, the rear baffle 12 is also provided with a fixed seat 24, the fixed seat 24 is installed at the lower end of the push plate 23, the middle of the fixed seat 24 is provided with a second gear 25, the middle of the second gear 25 is provided with a rotating rod 26, and the rotating rod 26 penetrates through the push plate 23 and extends forwards.
The second rotary base 18 is provided with a third gear 181, and the second gear 25 is engaged with the third gear 181. The rear baffle 12 is further provided with a third rotating seat 27 and a fourth rotating seat 28, the third rotating seat 27 and the fourth rotating seat 28 are provided with a fourth gear 29, the second rotating seat 18 and the fourth gear 29 are connected through a second gear belt 30, the second motor 15 is provided with a second motor rod 151, and the second motor rod 151 and the second rotating seat 18 are connected through a second belt 31.
The rear baffle plate 12 is provided with a first guide seat 32 and a second guide seat 33, the first guide seat 32 is provided with a first guide gear 34, the second guide seat 33 is provided with a second guide gear 35, and the first guide gear 34 and the second guide gear 35 are connected with the second gear belt 30.
Meanwhile, the third rotary base 27 and the fourth rotary base 28 are provided with a rotary member 36, the rotary member 36 is provided with a telescopic rod 37, a telescopic cylinder 38, a first universal joint 39 and a second universal joint 40, the telescopic rod 37 is installed in the telescopic cylinder 38, one end of the telescopic rod 37 is connected to the third rotary base 27 and/or the second universal joint 40 through the first universal joint 39, and the second universal joint 40 is installed at one end of the telescopic cylinder 38. The telescopic cylinder 38 is provided with a stroke groove 41, the telescopic rod 37 is provided with a pin shaft 42, and the pin shaft 42 is arranged in the stroke groove 41.
The first motor 14 drives the first belt 19 to rotate, so that the first belt 19 drives the first gear belt 22 to rotate, the screw rod 20 rotates, and the screw rod 20 lifts the push plate 23. In use, the drill bit is mounted on the rotating rod 26, and the rotating rod 26 is ejected out by the thrust of the push plate 23, so that the drill bit can clean the slag 6 to be removed. Simultaneously after second motor 15 rotates for second motor 15 drives second belt 31 and rotates, and second belt 31 drives second gear belt 30 and rotates, alright in order to make third gear 181 drive second gear 25 and rotate, makes the bull stick 26 in the middle of the second gear 25 rotatory, thereby makes bull stick 26 rotatory, the clearance slagging scorification. However, when the rotating rod 26 rotates, the screw rod 20 does not rotate, and the push plate 23 is not driven to move up and down.
And after second motor 15 rotates, can also make third roating seat 27 and fourth roating seat 28 rotate to make swivel 36 rotate, because swivel 36 has universal joint head, telescopic tube 38 and telescopic link 37 to constitute, so install the drill bit on second universal joint head 40, can adjust the length of telescopic link 37 in telescopic tube 38, can also rotate first universal joint head 39 and second universal joint head 70 simultaneously and adjust the direction, clear up slagging scorification 6 in the different directions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A method for locally overhauling a flash furnace bottom arch springing brick is characterized by comprising the following steps:
s1, building a support frame;
s2, directly removing supporting objects such as steel plates, copper water jackets, steel beams and the like of the furnace wall of the arch foot brick in the area to be replaced, and removing the supporting objects to the position below the arch foot brick;
s3, removing refractory bricks of the furnace wall above the area;
s4, removing the damaged arch springing bricks;
s5, removing the slag with the empty surface;
s6, replacing the arch springing bricks; wherein,
the dismounting device is used for dismounting refractory bricks, arch springing bricks and slagging scorification and comprises a front baffle, a rear baffle, a connecting column, a first motor and a second motor, wherein the connecting column is used for connecting the front baffle with the rear baffle, a through hole is formed in the middle of the front baffle, the first motor and the second motor are arranged on the rear baffle, a first motor rod is arranged on the first motor, a first rotating seat and a second rotating seat are arranged on the rear baffle, the first motor rod is connected with the first rotating seat through a first belt, a screw rod is arranged between the front baffle and the rear baffle, the screw rod is positioned in the middle of the connecting column, one end of the screw rod is arranged on the connecting column, a first gear is arranged at the other end of the screw rod, the first gear is connected with the first rotating seat through a first gear belt, a push plate is arranged on the screw rod, and a fixed seat is also arranged on the rear baffle, the lower extreme at the push pedal is installed to the fixing base, the centre of fixing base has the second gear, the bull stick has in the middle of the second gear, the bull stick passes the push pedal and extends forward, the third gear has on the second roating seat, the second gear is connected with third gear engagement, still be equipped with third roating seat and fourth roating seat on the backplate, the fourth gear has on third roating seat and the fourth roating seat, the second roating seat passes through the second gear belt with the fourth gear and is connected, the second motor pole has on the second motor, the second motor pole passes through the second belt with the second roating seat and is connected.
2. The method for locally repairing the bottom arch springing brick of the flash furnace as claimed in claim 1, wherein the rear baffle is provided with a first guide seat and a second guide seat, the first guide seat is provided with a first guide gear, the second guide seat is provided with a second guide gear, and the first guide gear and the second guide gear are connected with a second gear belt.
3. The method for local overhaul of the bottom arch springing bricks of the flash furnace according to claim 1, wherein the third rotating base and the fourth rotating base are provided with rotating members, the rotating members are provided with telescopic rods, telescopic cylinders, first universal joints and second universal joints, the telescopic rods are installed in the telescopic cylinders, one ends of the telescopic rods are connected to the third rotating base and/or the second universal joints through the first universal joints, and the second universal joints are installed at one ends of the telescopic cylinders.
4. The method for locally repairing the bottom arch springing brick of the flash furnace as claimed in claim 3, wherein the telescopic cylinder is provided with a stroke slot, and the telescopic rod is provided with a pin shaft, and the pin shaft is arranged in the stroke slot.
5. The method for locally repairing the arch springing brick at the bottom of the flash furnace according to claim 1, wherein the horizontal distance from the arch springing brick when the slagging part is removed is 300mm, a free surface is formed, the corner of the arch springing brick is free from other objects, and the arch springing brick and the slagging part do not form a joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166648.6A CN112815712A (en) | 2021-02-07 | 2021-02-07 | Local maintenance method for flash furnace bottom arch foot brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166648.6A CN112815712A (en) | 2021-02-07 | 2021-02-07 | Local maintenance method for flash furnace bottom arch foot brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112815712A true CN112815712A (en) | 2021-05-18 |
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ID=75862125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110166648.6A Pending CN112815712A (en) | 2021-02-07 | 2021-02-07 | Local maintenance method for flash furnace bottom arch foot brick |
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| Country | Link |
|---|---|
| CN (1) | CN112815712A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT7968199A0 (en) * | 1978-06-02 | 1979-06-04 | Hoogovens Ijmuiden Bv | PROCEDURE FOR THE CONSTRUCTION OR REPAIR OF REFRACTORY STRUCTURES PARTICULARLY IN THE CHAMBERS OF COKE OVENS |
| CN1266084A (en) * | 2000-03-23 | 2000-09-13 | 上海宝钢集团公司 | Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof |
| CN1310326A (en) * | 2000-01-25 | 2001-08-29 | 技术资源有限公司 | Method for changing furnace lining |
| CN101900486A (en) * | 2010-04-02 | 2010-12-01 | 攀钢集团冶金工程技术有限公司 | Multilayer roaster building method and hearth replacing method |
| CN201876155U (en) * | 2010-12-06 | 2011-06-22 | 潍柴动力股份有限公司 | Furnace bottom clearing device for cupola furnace |
| CN105605924A (en) * | 2016-02-14 | 2016-05-25 | 楚雄滇中有色金属有限责任公司 | Repair method of fixed anode copper metallurgical furnace bottom bricks |
| CN108225026A (en) * | 2018-02-09 | 2018-06-29 | 攀钢集团攀枝花钢钒有限公司 | It carbonization electric furnace body structure and its builds by laying bricks or stones and maintaining method |
| CN109631588A (en) * | 2019-01-31 | 2019-04-16 | 王贵江 | A kind of method for maintaining of all-electric melting kiln |
| CN110567274A (en) * | 2019-08-30 | 2019-12-13 | 楚雄滇中有色金属有限责任公司 | digging and repairing method for sidewall of impoverishment furnace |
-
2021
- 2021-02-07 CN CN202110166648.6A patent/CN112815712A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT7968199A0 (en) * | 1978-06-02 | 1979-06-04 | Hoogovens Ijmuiden Bv | PROCEDURE FOR THE CONSTRUCTION OR REPAIR OF REFRACTORY STRUCTURES PARTICULARLY IN THE CHAMBERS OF COKE OVENS |
| CN1310326A (en) * | 2000-01-25 | 2001-08-29 | 技术资源有限公司 | Method for changing furnace lining |
| CN1266084A (en) * | 2000-03-23 | 2000-09-13 | 上海宝钢集团公司 | Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof |
| CN101900486A (en) * | 2010-04-02 | 2010-12-01 | 攀钢集团冶金工程技术有限公司 | Multilayer roaster building method and hearth replacing method |
| CN201876155U (en) * | 2010-12-06 | 2011-06-22 | 潍柴动力股份有限公司 | Furnace bottom clearing device for cupola furnace |
| CN105605924A (en) * | 2016-02-14 | 2016-05-25 | 楚雄滇中有色金属有限责任公司 | Repair method of fixed anode copper metallurgical furnace bottom bricks |
| CN108225026A (en) * | 2018-02-09 | 2018-06-29 | 攀钢集团攀枝花钢钒有限公司 | It carbonization electric furnace body structure and its builds by laying bricks or stones and maintaining method |
| CN109631588A (en) * | 2019-01-31 | 2019-04-16 | 王贵江 | A kind of method for maintaining of all-electric melting kiln |
| CN110567274A (en) * | 2019-08-30 | 2019-12-13 | 楚雄滇中有色金属有限责任公司 | digging and repairing method for sidewall of impoverishment furnace |
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