CN215886902U - Online maintenance of equipment of coke oven lintel brick - Google Patents
Online maintenance of equipment of coke oven lintel brick Download PDFInfo
- Publication number
- CN215886902U CN215886902U CN202122131056.9U CN202122131056U CN215886902U CN 215886902 U CN215886902 U CN 215886902U CN 202122131056 U CN202122131056 U CN 202122131056U CN 215886902 U CN215886902 U CN 215886902U
- Authority
- CN
- China
- Prior art keywords
- brick
- lifting
- coke oven
- lintel
- sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model provides a coke oven lintel brick online maintenance equipment, characterized by includes brickmaking mould, mould strutting arrangement, mould hoisting device and brickmaking extrusion device, the mould strutting arrangement will the brickmaking mould is fixed at coke oven doorframe inboard, mould hoisting device will the brickmaking mould promotes to the position below of the lintel brick that needs the maintenance, just the last edge of brickmaking mould flushes with the lower edge of the lintel brick that needs the maintenance, the brickmaking mould includes the ascending maintenance material hold up tank of opening again, brickmaking extrusion device sets up the bottom plate lower part of maintenance material hold up tank, the bottom plate of maintenance material hold up tank can rise upwards under the extrusion of brickmaking extrusion device and with the position of the lintel brick that needs the maintenance to extrude the maintenance material of maintenance material hold up tank inside forms new lintel brick. The method can reduce the influence of the repair of the lintel brick on production and prolong the service life of the repaired lintel brick.
Description
Technical Field
The utility model belongs to the technical field of coke oven maintenance, and particularly relates to online maintenance equipment for lintel bricks of a coke oven.
Background
Coke is an essential raw material in the iron-making and steel-making processes. The coke is hard and environment-friendly coke obtained by roasting and baking coking coal in a coke oven, and is also a key raw material for manufacturing molten iron in a blast furnace. One coke oven consists of a plurality of groups of oven holes; these furnace holes have the same width (-600 mm) and the same height of the carbonization chamber and flame path composition. A steel or coke plant is often built with several or a dozen coke ovens. The life of a coke oven can be several years to several decades.
With the rapid growth of Chinese steel production, Chinese steel producers are building larger and larger coke ovens. In the last 10 years, china has built a number of large coke ovens with a height of 7.63 meters, which is by far the largest coke oven in the world. However, a common problem with these large ovens, and even smaller ovens, is that the oven lintel bricks can be damaged by thermal cycling and mechanical wear of the coke pusher. Damaged oven lintel bricks may result in: (1) the coke oven door frame is damaged; (2) coke oven gas leaks into the environment causing smoke and odor problems for the surrounding inhabitants and coke oven operators. With the recent mandated higher environmental standards by the chinese government, coke oven operators are in urgent need to repair damaged oven lintel bricks.
Previous repair methods include ceramic repair welding, bricklaying and gunning, but the results are not ideal.
1. The problem of ceramic repair welding: the method is an on-line maintenance method, and the damaged lintel bricks are welded together by using ceramic welding materials. However, the repair is problematic, and the repaired lintel brick can only maintain the repair life of 6 to 12 months, and needs another round of repair, so that the repair is frequent; is neither economical nor environmentally friendly.
2. Repairing and repairing lintel bricks by digging and repairing the artificial furnace roof: this is similar to a cold repair, which requires the oven to be cooled and not run for a long time, which affects coke production and is impractical and undesirable.
3. Spray repair maintenance: in western countries, this repair is done by gunning, which presents two problems: (1) it can lead to the coke oven not operating for a long time, and therefore production can be affected; (2) gunning machines are heavy and require the placement of water, electricity and other equipment at the hot coke oven door opening, which can be a potential safety hazard.
Disclosure of Invention
In order to solve the problems, reduce the influence of lintel brick repair on production and prolong the service life of the repaired lintel brick, the utility model provides coke oven lintel brick online maintenance equipment which is characterized by comprising a brick making mold, a mold supporting device, a mold lifting device and a brick making extrusion device, wherein the mold supporting device fixes the brick making mold on the inner side of a coke oven door frame, the mold lifting device lifts the brick making mold to a position below the lintel brick to be maintained, the upper edge of the brick making mold is flush with the lower edge of the lintel brick to be maintained, the brick making mold also comprises a maintenance material storage tank with an upward opening, the brick making extrusion device is arranged at the lower part of a bottom plate of the maintenance material storage tank, and the bottom plate of the maintenance material storage tank can be lifted upwards under the extrusion of the brick making extrusion device and extrude the maintenance material in the maintenance material storage tank to the position of the lintel brick to be maintained to form a new brick The lintel brick of (1).
The brickmaking mould including set up at the maintenance material hold up tank at the top and the lower part with maintenance material hold up tank fixed connection's jacking frame, brickmaking extrusion device fixes the inside central authorities of jacking frame, the fixed slide rail that is provided with the vertical direction in the inside both sides of jacking frame, be provided with gliding slider from top to bottom on the slide rail, fixedly connected with slide again in the slider outside, the upper end of slide with the bottom surface fixed connection of bottom plate, the lower extreme of slide with the slider links to each other, brickmaking extrusion device jacks up during the bottom plate, the slide drives the slider is in upwards slide on the slide rail, during brickmaking extrusion device pressure release, the slider is in downwards slide on the slide rail, and drive slide downstream and then drive the bottom plate falls.
The mould hoisting device is including promoting chain and L shape lifting plate again, the lower bottom surface front end of L shape lifting plate is fixed on the back lateral wall of maintenance material hold up tank, the facade of L shape lifting plate makes progress perpendicularly, just fixedly on the upper portion left end point of facade is provided with perpendicular ascending left lifting slide bar, fixedly on the right end point be provided with perpendicular ascending right lifting slide bar, it is provided with the lifting hook to promote the chain upper end, and lower extreme fixed connection is in the back lateral wall central authorities of maintenance material hold up tank.
The mould supporting device comprises a left horizontal supporting component, a right horizontal supporting component, a front horizontal supporting component and a rear horizontal supporting component, wherein the left horizontal supporting component and the right horizontal supporting component are fixedly arranged on two sides of the left lifting slide bar and the right lifting slide bar and are horizontally vertical to the left lifting slide bar and the right lifting slide bar, the front horizontal supporting component and the rear horizontal supporting component are fixedly arranged on the front side surface of the brick making mould and are vertical to the front side surface of the brick making mould, and the left horizontal supporting component and the right horizontal supporting component and the front horizontal supporting component and the rear horizontal supporting component can be fixed on the furnace wall of the coke oven door frame.
The left horizontal supporting component and the right horizontal supporting component comprise a left supporting rod and a right supporting rod, the tail ends of the left supporting rod and the right supporting rod are respectively provided with a left sliding hole and a right sliding hole, the left sliding hole and the right sliding hole are respectively embedded outside the left lifting sliding rod and the right lifting sliding rod, the left lifting sliding rod and the right lifting sliding rod can slide up and down in the left sliding hole and the right sliding hole, and the front ends of the left supporting rod and the right supporting rod are fixed on the oven wall of the coke oven door frame close to one side of the oven door.
The front and rear horizontal supporting components comprise an H-shaped frame and a horizontal supporting rod arranged at the front end of the H-shaped frame, the tail ends of two side edges of the H-shaped frame are horizontally fixed on the front side surface of the bottom edge of the jacking frame and are vertical to the front side surface of the bottom edge of the jacking frame, and two ends of the horizontal supporting rod are placed on the oven wall of one side, far away from the oven door, of the coke oven door frame.
The brick making extrusion device is a jack.
And reinforcing rods are also arranged between the two side edges of the H-shaped frame and the horizontal supporting rods.
The two ends of the left supporting rod and the right supporting rod are lifted, finely adjusted and fastened through trapezoidal nuts.
The brick making die, the die supporting device and the die lifting device are all made of stainless steel.
The utility model can achieve the following effects: (1) minimal production interruptions (online maintenance); (2) the prefabricated material can be simply and quickly installed; (3) no hazardous equipment or material is present near the high temperature coke oven door; (4) the production can be finished in 2 hours and then the coke oven recovers the production; (5) the replacement material can be close to or better than the original mounting material.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a brick molding die of the present invention;
fig. 3 is a schematic view of the installation of the present invention.
The main reference numerals are explained below:
1. brick making die 2, die supporting device 3, die lifting device 4 and brick making extrusion device
1-1, maintenance material storage tank 1-2, bottom plate 1-3, jacking frame 1-4 and slide rail
1-5, slide block 1-6 and slide plate
2-1, a left horizontal supporting component 2-2, a right horizontal supporting component 2-3, a front horizontal supporting component, a rear horizontal supporting component and a left supporting rod
2-4 parts of right supporting rod 2-5 parts of left sliding hole 2-6 parts of right sliding hole 2-7 parts of H-shaped frame
2-8 parts of horizontal support rod 2-9 parts of reinforcing rod 3-1 parts of lifting chain 3-2 parts of L-shaped lifting plate
3-3 parts of left lifting slide bar 3-4 parts of right lifting slide bar 3-5 parts of lifting hook
Detailed Description
As shown in fig. 1 and fig. 2, the structure of the present invention is schematically illustrated: provides an on-line maintenance device for a lintel brick of a coke oven, which is characterized by comprising a brick making die 1, a die supporting device 2, a die lifting device 3 and a brick making extrusion device 4, the mould supporting device 2 fixes the brick making mould 1 on the inner side of the coke oven door frame, the mould lifting device 3 lifts the brick making mould 1 to the position below the lintel brick needing to be maintained, the upper edge of the brick making mold 1 is flush with the lower edge of the lintel brick to be maintained, the brick making mold 1 also comprises a maintenance material storage tank 1-1 with an upward opening, the brick making extrusion device 4 is arranged at the lower part of the bottom plate 1-2 of the maintenance material storage tank 1-1, the bottom plate 1-2 can be lifted upwards under the extrusion of the brick pressing device 4 and presses the maintenance material in the maintenance material storage tank 1-1 to the position of the lintel brick to be maintained to form a new lintel brick.
The brick making die 1 comprises a maintenance material storage tank 1-1 arranged at the top and a jacking frame 1-3 fixedly connected with the maintenance material storage tank 1-1 at the lower part, the brick making extrusion device 4 is fixed at the center inside the jacking frame 1-3, two sides inside the jacking frame 1-3 are fixedly provided with vertical sliding rails 1-4, the sliding rails 1-4 are provided with sliding blocks 1-4 capable of sliding up and down, the outer sides of the sliding blocks 1-5 are fixedly connected with sliding plates 1-6, the upper ends of the sliding plates 1-6 are fixedly connected with the bottom surfaces of the bottom plates 1-2, the lower ends of the sliding plates 1-6 are connected with the sliding blocks 1-5, when the brick making extrusion device 4 jacks up the bottom plates 1-2, the sliding plates 1-6 drive the sliding blocks 1-5 to slide up on the sliding rails 1-4 When the brick making extrusion device 4 releases the pressure, the sliding blocks 1 to 5 slide downwards on the sliding rails 1 to 4 and drive the sliding plates 1 to 6 to move downwards so as to drive the bottom plates 1 to 2 to fall back.
The mold lifting device 3 further comprises a lifting chain 3-1 and an L-shaped lifting plate 3-2, the front end of the lower bottom surface of the L-shaped lifting plate 3-2 is fixed on the rear side wall of the maintenance material storage tank 1-1, the vertical surface of the L-shaped lifting plate 3-2 is vertically upward, a vertically upward left lifting slide bar 3-3 is fixedly arranged on the left end point of the upper portion of the vertical surface, a vertically upward right lifting slide bar 3-4 is fixedly arranged on the right end point, a lifting hook 3-5 is arranged at the upper end of the lifting chain 3-1, and the lower end of the lifting chain 3-1 is fixedly connected to the center of the rear side wall of the maintenance material storage tank 1-1.
The mold supporting device 2 further comprises a left horizontal supporting part 2-1, a right horizontal supporting part 2-1, a front horizontal supporting part 2-2 and a rear horizontal supporting part 2-2, the left horizontal supporting part 2-1 and the right horizontal supporting part 2-1 are fixedly arranged on two sides of the left lifting slide bar 3-3 and the right lifting slide bar 3-4 and are horizontally and vertically arranged with the left lifting slide bar 3-3 and the right lifting slide bar 3-4, the front horizontal supporting part 2-2 and the rear horizontal supporting part 2-2 are fixedly arranged on the front side surface of the brick making mold 1 and are vertical to the front side surface of the brick making mold 1, and the left end and the right end of the left horizontal supporting part 2-1 and the right end of the front horizontal supporting part 2-2 can be fixed on the oven wall of the coke oven door frame.
The left and right horizontal supporting parts 2-1 further comprise left supporting rods 2-3 and right supporting rods 2-4, the tail ends of the left supporting rods 2-3 and the right supporting rods 2-4 are respectively provided with left sliding holes 2-5 and right sliding holes 2-6, the left sliding holes 2-5 and the right sliding holes 2-6 are respectively nested outside the left lifting sliding rods 3-3 and the right lifting sliding rods 3-4, the left lifting sliding rods 3-3 and the right lifting sliding rods 3-4 can slide up and down in the left sliding holes 2-5 and the right sliding holes 2-6, and the front ends of the left supporting rods 2-3 and the right supporting rods 2-4 are fixed on the oven wall on one side, close to an oven door, of the coke oven door frame.
The front and rear horizontal supporting parts 2-2 also comprise H-shaped frames 2-7 and horizontal supporting rods 2-8 arranged at the front ends of the H-shaped frames 2-7, the tail ends of two side edges of the H-shaped frames 2-7 are horizontally fixed on the front side surface of the bottom edge of the jacking frames 1-3 and are vertical to the front side surface of the bottom edge of the jacking frames 1-3, and two ends of the horizontal supporting rods 2-8 are placed on the oven wall at one side of the coke oven door frame far away from the oven door.
The brick making extrusion device 4 is a jack.
And reinforcing rods 2-9 are also arranged between the two side edges of the H-shaped frame 2-7 and the horizontal supporting rods 2-8.
Two ends of the left supporting rod 2-3 and the right supporting rod 2-4 are lifted, finely adjusted and fastened through trapezoidal nuts.
The brick making mould 1, the mould supporting device 2 and the mould lifting device 3 are all made of stainless steel.
As shown in fig. 3, the specific application method is as follows:
1. the repair material storage tank 1-1 is filled with a material.
2. And a lifter is arranged at the top of the coke oven door frame, the lifter is connected with the lifting hook 3-5, then the lifter is used for lifting the device to the top of the coke oven door frame, two ends of the left support rod 2-3 and the right support rod 2-4 are fastened to the oven wall of the coke oven door frame at one side close to the oven door through trapezoidal nuts, two ends of the horizontal support rods 2-8 are placed on the oven wall of the coke oven door frame at one side far away from the oven door, and the brick making mold 1 is suspended under the vertical lintel brick at the top of the coke oven door frame.
3. And continuously lifting the brick making mold 1 by using a lifter, wherein the left lifting slide bar 3-3 and the right lifting slide bar 3-4 slide upwards in the left slide hole 2-5 and the right slide hole 2-6 at the moment, and the upper edge of the brick making mold 1 is lifted to be flush with the lower edge of the lintel brick to be maintained.
4. And starting the brick pressing device 4, jacking the bottom plate 1-2 upwards, driving the sliding block 1-5 to slide upwards on the sliding rail 1-4 by the sliding plate 1-6, pressing the material to the lintel brick to be repaired by the bottom plate 1-2, and keeping for 30-40min to harden the material.
5. And the brick making extrusion device 4 releases the pressure, and the sliding blocks 1-5 slide downwards on the sliding rails 1-4 and drive the sliding plates 1-6 to move downwards so as to drive the bottom plates 1-2 to fall back to the original positions.
6. And removing the left support rod 2-3, the right support rod 2-4 and the horizontal support rod 2-8 from the coke oven door frame, and placing the equipment back to the ground by using a lifting machine to finish the repair.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The on-line maintenance equipment for the lintel brick of the coke oven is characterized by comprising a brick making mold (1), a mold supporting device (2), a mold lifting device (3) and a brick making extrusion device (4), wherein the brick making mold (1) is fixed on the inner side of a coke oven door frame by the mold supporting device (2), the mold lifting device (3) lifts the brick making mold (1) to the position below the lintel brick to be maintained, the upper edge of the brick making mold (1) is flush with the lower edge of the lintel brick to be maintained, the brick making mold (1) further comprises a maintenance material storage tank (1-1) with an upward opening, the brick making extrusion device (4) is arranged at the lower part of a bottom plate (1-2) of the maintenance material storage tank (1-1), and the bottom plate (1-2) can be lifted upwards under the extrusion of the brick making extrusion device (4) and can lift the maintenance material storage tank (1-1) internally and maintain the maintenance material storage tank (1-1) The material is extruded to the position of the lintel brick to be repaired to form a new lintel brick.
2. The coke oven lintel brick online maintenance equipment according to claim 1, wherein the brick making die (1) comprises a maintenance material storage tank (1-1) arranged at the top and a jacking frame (1-3) fixedly connected with the maintenance material storage tank (1-1) at the lower part, the brick making extrusion device (4) is fixed at the inner center of the jacking frame (1-3), slide rails (1-4) in the vertical direction are fixedly arranged at two sides inside the jacking frame (1-3), slide blocks (1-5) capable of sliding up and down are arranged on the slide rails (1-4), slide plates (1-6) are fixedly connected with the outer sides of the slide blocks (1-5), the upper ends of the slide plates (1-6) are fixedly connected with the bottom surface of the bottom plate (1-2), the lower end of the sliding plate (1-6) is connected with the sliding block (1-5), when the brick making extrusion device (4) jacks up the bottom plate (1-2), the sliding plate (1-6) drives the sliding block (1-5) to slide upwards on the sliding rail (1-4), and when the brick making extrusion device (4) releases pressure, the sliding block (1-5) slides downwards on the sliding rail (1-4) and drives the sliding plate (1-6) to move downwards so as to drive the bottom plate (1-2) to fall back.
3. The coke oven lintel brick online maintenance equipment according to claim 2, wherein the mold lifting device (3) further comprises a lifting chain (3-1) and an L-shaped lifting plate (3-2), the front end of the lower bottom surface of the L-shaped lifting plate (3-2) is fixed on the rear side wall of the maintenance material storage tank (1-1), the vertical surface of the L-shaped lifting plate (3-2) is vertically upward, a left lifting slide bar (3-3) which is vertically upward is fixedly arranged on the left end point of the upper part of the vertical surface, a right lifting slide bar (3-4) which is vertically upward is fixedly arranged on the right end point, a lifting hook (3-5) is arranged at the upper end of the lifting chain (3-1), and the lower end is fixedly connected to the center of the rear side wall of the maintenance material storage tank (1-1).
4. The coke oven lintel brick on-line maintenance equipment of claim 3, wherein the mold supporting device (2) further comprises left and right horizontal supporting parts (2-1) and front and rear horizontal supporting parts (2-2), the left and right horizontal supporting parts (2-1) are fixedly arranged at two sides of the left lifting slide bar (3-3) and the right lifting slide bar (3-4), and is horizontally vertical to the left lifting slide bar (3-3) and the right lifting slide bar (3-4) left and right, the front and rear horizontal supporting parts (2-2) are fixedly arranged on the front side surface of the brick making mould (1), and is vertical to the front side surface of the brick making die (1), and the left and right ends of the left and right horizontal supporting components (2-1) and the front and rear horizontal supporting components (2-2) can be fixed on the oven wall of the coke oven door frame.
5. The coke oven lintel brick online maintenance equipment according to claim 4, wherein the left and right horizontal supporting parts (2-1) further comprise a left supporting rod (2-3) and a right supporting rod (2-4), the tail ends of the left supporting rod (2-3) and the right supporting rod (2-4) are respectively provided with a left sliding hole (2-5) and a right sliding hole (2-6), the left sliding hole (2-5) and the right sliding hole (2-6) are respectively embedded at the outer sides of the left lifting sliding rod (3-3) and the right lifting sliding rod (3-4), the left lifting sliding rod (3-3) and the right lifting sliding rod (3-4) can slide up and down in the left sliding hole (2-5) and the right sliding hole (2-6), and the front ends of the left supporting rod (2-3) and the right supporting rod (2-4) are fixed at the oven wall close to the oven door side of the oven door frame The above.
6. The coke oven lintel brick online maintenance equipment according to claim 4, wherein the front and rear horizontal support parts (2-2) further comprise H-shaped frames (2-7) and horizontal support rods (2-8) arranged at the front ends of the H-shaped frames (2-7), the tail ends of the two side edges of the H-shaped frames (2-7) are horizontally fixed on the front side of the bottom edge of the jacking frame (1-3) and are vertical to the front side of the bottom edge of the jacking frame (1-3), and the two ends of the horizontal support rods (2-8) are placed on the oven wall at the side of the coke oven door frame far away from the oven door.
7. The coke oven lintel brick online maintenance equipment of claim 1, wherein the brick pressing device (4) is a jack.
8. The coke oven lintel brick on-line maintenance equipment of claim 6, wherein a reinforcing bar (2-9) is further arranged between the two side edges of the H-shaped frame (2-7) and the horizontal supporting bar (2-8).
9. The coke oven lintel brick online maintenance equipment of claim 5, wherein the two ends of the left support bar (2-3) and the right support bar (2-4) are finely adjusted and fastened by lifting trapezoidal nuts.
10. The online maintenance equipment for the lintel brick of the coke oven according to claim 1, wherein the brick making die (1), the die supporting device (2) and the die lifting device (3) are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131056.9U CN215886902U (en) | 2021-09-03 | 2021-09-03 | Online maintenance of equipment of coke oven lintel brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131056.9U CN215886902U (en) | 2021-09-03 | 2021-09-03 | Online maintenance of equipment of coke oven lintel brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215886902U true CN215886902U (en) | 2022-02-22 |
Family
ID=80503435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122131056.9U Active CN215886902U (en) | 2021-09-03 | 2021-09-03 | Online maintenance of equipment of coke oven lintel brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215886902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698946A (en) * | 2021-09-03 | 2021-11-26 | 天津新世纪耐火材料有限公司 | Online maintenance equipment and maintenance method for coke oven lintel brick |
-
2021
- 2021-09-03 CN CN202122131056.9U patent/CN215886902U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698946A (en) * | 2021-09-03 | 2021-11-26 | 天津新世纪耐火材料有限公司 | Online maintenance equipment and maintenance method for coke oven lintel brick |
| CN113698946B (en) * | 2021-09-03 | 2023-10-20 | 天津新世纪耐火材料有限公司 | Online maintenance equipment and maintenance method for lintel bricks of coke ovens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102424753B (en) | Method for repairing bricks at bottom of carbonization chamber of large coke oven | |
| CN215886902U (en) | Online maintenance of equipment of coke oven lintel brick | |
| CN203501785U (en) | Suspended precast block and one-piece casting combined furnace top construction | |
| CN2848853Y (en) | Fire brick building device of coke oven carbonation chamber bottom | |
| CN113698946A (en) | Online maintenance equipment and maintenance method for coke oven lintel brick | |
| CN110776933A (en) | Coke oven door frame upper sealing component and manufacturing tool and manufacturing method thereof | |
| CN109974459B (en) | Method for repairing furnace eye by using electrode paste | |
| CN204255081U (en) | A kind of EAF bottom ramming mass Rotating fields | |
| CN107446595A (en) | A kind of method of full stove integral replacing coke oven coke oven uprising tube | |
| CN201217676Y (en) | Water-sealed device of ball circular cooler | |
| CN108975171B (en) | Segmented accurate dismounting device for water beam and upright column of heating furnace and use method | |
| CN210486460U (en) | Tunnel kiln with adjustable kiln chamber height | |
| CN109055989B (en) | Repairing method of electrolytic cell | |
| CN110567274B (en) | Digging and repairing method for sidewall of impoverishment furnace | |
| CN2279573Y (en) | Metallurgical baking self-sintering magnesium oxide crucible furnace lining | |
| CN110567273B (en) | Method for replacing water-cooling close-packed plate of 130-ton refining furnace | |
| CN112553439A (en) | High-temperature overturning trolley furnace | |
| CN201313944Y (en) | Whole flue wall of baking furnace | |
| CN105066701A (en) | Ignition furnace on-line replacement method | |
| CN221212108U (en) | Device for forming refractory bricks | |
| CN213060909U (en) | Blast furnace slag runner slag notch prefabricated section | |
| CN115725813B (en) | Converter pit steel slag cleaning device and method | |
| CN111365998A (en) | Stepping furnace formed refractory brick and using method thereof | |
| CN205368406U (en) | Blast furnace process is with rectilinear circulation loading attachment | |
| CN213273629U (en) | Drying device for blast furnace tapping channel blank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |