CN113091462A - Local maintenance method for bottom of flash furnace - Google Patents
Local maintenance method for bottom of flash furnace Download PDFInfo
- Publication number
- CN113091462A CN113091462A CN202110399017.9A CN202110399017A CN113091462A CN 113091462 A CN113091462 A CN 113091462A CN 202110399017 A CN202110399017 A CN 202110399017A CN 113091462 A CN113091462 A CN 113091462A
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- China
- Prior art keywords
- extension rod
- bricks
- arch springing
- brick
- fixing
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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
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
Abstract
The invention discloses a local overhauling method of a flash furnace bottom, 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 device for removing the refractory bricks, the arch springing bricks and the slagging is characterized in that the device for removing the refractory bricks, the arch springing bricks and the slagging is adopted, the device for removing comprises a removing mechanism and a collecting mechanism, and the removing mechanism is installed on the collecting mechanism. 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 local maintenance method for a flash furnace bottom.
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 solve the defects of the prior art, the invention provides a local overhauling method for the bottom of a flash furnace.
The technical scheme of the invention is realized as follows:
a local overhauling method for the bottom of a flash furnace 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 content of the first and second substances,
demolish resistant firebrick, hunch foot brick and slagging scorification and adopt and demolish the device, demolish the device including demolising the mechanism and collecting the mechanism, demolish the mechanism and install in collecting the mechanism, collect the mechanism and include support frame, conveyer belt and supporting seat, collecting box, motor and mount pad have on the support frame, first rotary disk has on the mount pad, be connected through first belt between motor and the first rotary disk, first extension rod has on the support frame, second extension rod has on the first extension rod, third extension rod has on the second extension rod, still have the second rotary disk on the first extension rod, be connected through the second belt between second rotary disk and the first rotary disk, still have first dead lever on the support frame, the one end and the support frame of first dead lever are articulated to be connected, and the other end and first extension rod fixed connection, the third extension rod is provided with a second fixing rod, one end of the second fixing rod is hinged with the third extension rod, the other end of the second fixing rod is fixedly connected with the first extension rod, the second extension rod and the third extension rod are provided with rotating shafts, the conveyor belt is arranged on the rotating shafts, the collecting box is arranged at the lower end of the conveyor belt, and the supporting seat is arranged on the third extension rod;
the dismounting mechanism comprises a fixing plate, the dismounting mechanism is installed on a supporting seat through the fixing plate, a sliding rail and a cylinder are arranged on the fixing plate, a first sliding seat and a second sliding seat are arranged on the sliding rail, a fixing part is arranged on the first sliding seat, a water pump is arranged in the middle of the fixing part, an installing part is arranged on the second sliding seat, an injection nozzle is arranged on the installing part, the rear end of the injection nozzle is connected with the water pump, an air inlet pipe is arranged on the injection nozzle, the front end of the cylinder is connected with the fixing part, and a water inlet is formed in the rear end of the water pump.
In the invention, the horizontal distance between the slag bonding part and the arch springing brick is 300mm, a free face is formed, the corner of the arch springing brick is free from contact with other objects, and no joint is formed between the arch springing brick and the slag bonding part.
In the invention, the first extension rod is provided with a plurality of mounting holes, and the first fixing rod and the second fixing rod are fixed in the mounting holes.
In the invention, a sliding rod is arranged between the mounting piece and the fixing piece, and a spring is sleeved on the sliding rod.
The implementation of the local overhauling method for the flash furnace bottom 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 a schematic view of the detachment mechanism of FIG. 4;
FIG. 6 is another schematic view of the structure of FIG. 5;
fig. 7 is a partial structural view of fig. 4.
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 7, the local repair method for the bottom of the flash furnace of the invention 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 arrangement 10 comprises a demolition mechanism 101 and a collection mechanism 102, the demolition mechanism 101 being mounted on the collection mechanism 102.
The collecting mechanism 102 includes a support frame 11, a conveyor belt 12, and a support base 13. The supporting frame 11 is provided with a collecting box 14, a motor 15 and a mounting seat 16, the mounting seat 16 is provided with a first rotating disc 17, the motor 15 is connected with the first rotating disc 17 through a first belt 18, the supporting frame 11 is provided with a first extension rod 19, the first extension rod 19 is provided with a second extension rod 20, the second extension rod 20 is provided with a third extension rod 21, the first extension rod 19 is further provided with a second rotating disc 22, and the second rotating disc 22 is connected with the first rotating disc 17 through a second belt 24.
Still have first dead lever 25 on the support frame 11, the one end and the support frame 11 of first dead lever 25 are articulated to be connected, the other end and first extension rod 19 fixed connection, second dead lever 26 has on the third extension rod 21, the one end and the third extension rod 21 of second dead lever 26 are articulated to be connected, the other end and the first extension rod 19 fixed connection of second dead lever 26, first extension rod 19, rotation axis 27 has on second extension rod 20 and the third extension rod 21, rotation axis 27 is arranged in to conveyer belt 12, the lower extreme at conveyer belt 12 is installed to collecting box 14, supporting seat 13 is installed on third extension rod 21.
The first extension rod 19 has a plurality of mounting holes 28, and the first fixing rod 25 and the second fixing rod 26 are fixed in the mounting holes 28. By installing the first fixing rod 25 and the second fixing rod 26 in different mounting holes 28, the angles of the first extension rod 19 and the third extension rod 21 can be adjusted, thereby facilitating the removal of refractory bricks at different heights or different positions.
The dismounting mechanism 101 comprises a fixed plate 29, a dismounting mechanism 102 is mounted on the supporting base 13 through the fixed plate 29, a slide rail 30 and an air cylinder 31 are arranged on the fixed plate 29, a first slide seat 32 and a second slide seat 33 are arranged on the slide rail 30, a fixing part 34 is arranged on the first slide seat 32, a water pump 35 is arranged in the middle of the fixing part 34, a mounting part 36 is arranged on the second slide seat 33, a spray nozzle 37 is arranged on the mounting part 36, the rear end of the spray nozzle 37 is connected with the water pump 35, an air inlet pipe 38 is arranged on the spray nozzle 37, the front end of the air cylinder 31 is connected with the fixing part 34, and a water. A sliding rod 40 is arranged between the mounting part 36 and the fixing part 34, and a spring 41 is sleeved on the sliding rod 40. The mount 34 is able to slide on the slide bar 40 and the mount 36 is not able to slide.
By introducing water from the water inlet 39 and then introducing air from the air inlet pipe 38, high pressure water is brought into high pressure air, and the cylinder 31 can push the fixing member 34 to move forward and then push the mounting member 36 by the elastic force of the spring 41, so that the spray nozzle 37 can be buffered by the spring 41, which is beneficial for protecting the spray nozzle 37. The portion of the hearth that needs to be removed is then aligned, removed, and the removed portion is collected in the collection tank 14 by the collection mechanism 102.
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 (4)
1. A local overhauling method for the bottom of a flash furnace 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 content of the first and second substances,
demolish resistant firebrick, hunch foot brick and slagging scorification and adopt and demolish the device, demolish the device including demolising the mechanism and collecting the mechanism, demolish the mechanism and install in collecting the mechanism, collect the mechanism and include support frame, conveyer belt and supporting seat, collecting box, motor and mount pad have on the support frame, first rotary disk has on the mount pad, be connected through first belt between motor and the first rotary disk, first extension rod has on the support frame, second extension rod has on the first extension rod, third extension rod has on the second extension rod, still have the second rotary disk on the first extension rod, be connected through the second belt between second rotary disk and the first rotary disk, still have first dead lever on the support frame, the one end and the support frame of first dead lever are articulated to be connected, and the other end and first extension rod fixed connection, the third extension rod is provided with a second fixing rod, one end of the second fixing rod is hinged with the third extension rod, the other end of the second fixing rod is fixedly connected with the first extension rod, the second extension rod and the third extension rod are provided with rotating shafts, the conveyor belt is arranged on the rotating shafts, the collecting box is arranged at the lower end of the conveyor belt, and the supporting seat is arranged on the third extension rod;
the dismounting mechanism comprises a fixing plate, the dismounting mechanism is installed on a supporting seat through the fixing plate, a sliding rail and a cylinder are arranged on the fixing plate, a first sliding seat and a second sliding seat are arranged on the sliding rail, a fixing part is arranged on the first sliding seat, a water pump is arranged in the middle of the fixing part, an installing part is arranged on the second sliding seat, an injection nozzle is arranged on the installing part, the rear end of the injection nozzle is connected with the water pump, an air inlet pipe is arranged on the injection nozzle, the front end of the cylinder is connected with the fixing part, and a water inlet is formed in the rear end of the water pump.
2. The method for local maintenance of the bottom of a 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 face 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 seam.
3. The method of local repair of a flash furnace bottom of claim 1 wherein the first extension rod has a plurality of mounting holes therein, and the first fixing rod and the second fixing rod are fixed in the mounting holes.
4. The method of claim 1, wherein a slide bar is provided between the mounting member and the fixing member, and a spring is provided on the slide bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110399017.9A CN113091462A (en) | 2021-04-14 | 2021-04-14 | Local maintenance method for bottom of flash furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110399017.9A CN113091462A (en) | 2021-04-14 | 2021-04-14 | Local maintenance method for bottom of flash furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113091462A true CN113091462A (en) | 2021-07-09 |
Family
ID=76677253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110399017.9A Withdrawn CN113091462A (en) | 2021-04-14 | 2021-04-14 | Local maintenance method for bottom of flash furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113091462A (en) |
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2021
- 2021-04-14 CN CN202110399017.9A patent/CN113091462A/en not_active Withdrawn
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Application publication date: 20210709 |