CN115323105A - Method for quickly repairing converter steel-tapping hole brick cup on line - Google Patents
Method for quickly repairing converter steel-tapping hole brick cup on line Download PDFInfo
- Publication number
- CN115323105A CN115323105A CN202210966071.1A CN202210966071A CN115323105A CN 115323105 A CN115323105 A CN 115323105A CN 202210966071 A CN202210966071 A CN 202210966071A CN 115323105 A CN115323105 A CN 115323105A
- Authority
- CN
- China
- Prior art keywords
- converter
- tapping hole
- steel
- brick cup
- brick
- 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.)
- Pending
Links
- 239000011449 brick Substances 0.000 title claims abstract description 81
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 90
- 239000010959 steel Substances 0.000 claims abstract description 90
- 230000008439 repair process Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 238000005498 polishing Methods 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 239000010431 corundum Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 4
- 230000035882 stress Effects 0.000 claims description 4
- 230000008646 thermal stress Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/44—Refractory linings
- C21C5/445—Lining or repairing the taphole
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The application provides a method for quickly repairing a brick cup of a converter tap hole on line, which comprises the following specific steps: cleaning a damaged brick cup of the steel tapping hole close to one side of the furnace shell; the converter is shaken to 90 degrees, the furnace mouth faces to the charging side, and the steel tapping hole is kept vertical to the upper surface of the converter; filling refractory castable in a cavity formed between the outer side of the steel pipe and the furnace shell and other refractory bricks, and compacting by using a vibrating rod; the brick cup of the steel tapping hole is vertical, the brick cup at one side of the steel tapping hole close to the furnace shell is ensured to be static in the state of the upper surface, and a casting material to be poured is solidified to form a whole with the original brick cup of the steel tapping hole and a steel pipe; after the casting material is solidified and is integrated with the original steel tapping hole and the steel pipe. After the technology of the invention is adopted, when the brick cup of the steel tapping hole at one side of the converter close to the furnace shell is damaged, the brick cup can be quickly repaired on line, after the test and repair, the brick cup can be generally continuously used for more than 5000 furnaces, the method is simple and easy to implement, and the repair effect is better.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a method for quickly repairing a brick cup of a converter tapping hole on line.
Background
The steel tapping hole of the converter is important equipment for tapping after the smelting of the converter is finished, and the steel tapping hole consists of steel tapping hole resistant materials, steel tapping hole pocket brick resistant materials and the like. The length of the steel-tapping hole of the converter is changed according to the tonnage of the converter and different designs, the final aim is to ensure smooth steel tapping after smelting of the converter, and simultaneously, the excessive slag is prevented from flowing out along with the steel-tapping hole, so that the aims of tapping out steel and few slag are fulfilled.
The converter tap hole brick cup is an integral refractory material for wrapping and fixing the converter tap hole, and the tap hole brick cup on one side close to a converter shell is easy to damage, fracture, fall blocks and the like due to the influence of long-term thermal stress and mechanical stress when the tap hole is replaced. If the steel-tapping hole brick cup is broken and falls, on one hand, the fixation of the position of the steel-tapping hole can be influenced, and on the other hand, under the infiltration action of molten steel, the molten steel easily penetrates out along the damaged brick cup part to form the steel-penetrating accident of the steel-tapping hole brick cup of the converter, so that the safety and the production are directly influenced.
The invention discloses an on-line repairing method of a converter tap hole brick cup, which can repair the damage phenomenon of one side of the converter tap hole brick cup close to a converter shell on line and realize the function of on-line quick repair under the condition that a converter lining is not replaced. The method provided by the invention is simple to operate and good in applicability, and therefore, a method for quickly repairing the brick cup of the converter steel tapping hole on line is provided to solve the problems.
Disclosure of Invention
The invention mainly aims to provide a method for quickly repairing a brick cup of a converter tapping hole on line, which can effectively solve the problems in the background art.
In order to realize the purpose, the invention adopts the technical scheme that:
a method for quickly repairing a brick cup of a converter tap hole on line comprises the following steps:
the converter tap hole brick cup is arranged at one side close to a converter shell, and is influenced by thermal stress, mechanical stress when the tap hole is replaced and the like, so that damage phenomena such as cracks, faults, block falling and the like often occur, a gap can be formed after the damage occurs, and molten steel leakage accidents along the gap are easy to occur in the using process. The invention can realize the method for quickly repairing the brick cup of the tap hole on line, and the specific operation steps are as follows:
firstly, cleaning a damaged steel tapping hole brick cup close to one side of a furnace shell, and polishing and flattening until a complete steel tapping hole brick cup layer is exposed;
secondly, the converter is shaken to 90 degrees, the converter mouth faces to the charging side, the steel tapping hole is kept to be vertical to the upper surface of the converter, a steel pipe with the inner diameter being the same as the inner diameter of the steel tapping hole brick cup is vertically placed above the steel tapping hole brick cup, and the inner cavity of the steel pipe is connected with the inner cavity of the steel tapping hole to form a whole;
thirdly, filling refractory castable in cavities formed between the outer side of the steel pipe and the furnace shell and other refractory bricks (namely cavities formed after the damaged steel outlet pocket bricks are cleaned to resist the corrosion) by adopting refractory castable, compacting by adopting a vibrating bar, and pouring the castable to a height slightly higher than the furnace shell at the position of a converter installation reference plate;
fourthly, keeping the converter at 90 degrees, enabling the converter mouth to face the charging side, enabling the brick cup of the steel tapping hole to be vertical and ensuring that the brick cup of the steel tapping hole close to one side of the converter shell is static in the state of the upper surface, and enabling the casting material to be solidified to form a whole with the original brick cup of the steel tapping hole and the steel pipe;
and fifthly, after the casting material is solidified and is integrated with the original steel tapping hole and the steel pipe, cutting off the steel pipe with the excessive length, and polishing and trimming the surface layer of the casting material by using a polishing machine until the standard plate of the steel tapping hole of the converter is installed.
Preferably, the refractory castable used in the third step is corundum.
Preferably, in the fourth step, after the castable is filled, the converter is kept at 90 degrees, and the standing time of the furnace mouth towards the feeding side is more than or equal to 40min, so as to ensure that the castable is completely solidified.
Compared with the prior art, the invention has the following beneficial effects:
after the technology of the invention is adopted, when the steel tapping hole brick cup at one side of the converter close to the converter shell is damaged, the on-line quick repair can be realized, after the test and the repair, the on-line quick repair can be generally continuously used for more than 5000 furnaces, the method is simple and easy to implement, and the repair effect is better.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for quickly repairing a brick cup of a steel tapping hole of a converter on line comprises
The converter tap hole brick cup is arranged at one side close to a converter shell, and is influenced by thermal stress, mechanical stress when the tap hole is replaced and the like, so that damage phenomena such as cracks, faults, block falling and the like often occur, a gap can be formed after the damage occurs, and molten steel leakage accidents along the gap are easy to occur in the using process.
The invention can realize the method for quickly repairing the brick cup of the tap hole on line, which comprises the following steps:
firstly, cleaning a damaged steel tapping hole brick cup close to one side of a furnace shell, and polishing and flattening until a complete steel tapping hole brick cup layer is exposed;
secondly, the converter is shaken to 90 degrees, the furnace mouth faces to the charging side, the steel tapping hole is kept to be vertical to the upper surface of the converter, a steel pipe with the inner diameter being the same as the inner diameter of the brick cup of the steel tapping hole is vertically placed above the brick cup of the steel tapping hole, and the inner cavity of the steel pipe is connected with the inner cavity of the steel tapping hole to form a whole;
thirdly, filling refractory castable in cavities formed between the outer side of the steel pipe and the furnace shell and other refractory bricks (namely cavities formed after the damaged steel outlet pocket bricks are cleaned to resist the corrosion) by adopting refractory castable, compacting by adopting a vibrating bar, and pouring the castable to a height slightly higher than the furnace shell at the position of a converter installation reference plate;
fourthly, keeping the converter at 90 degrees, enabling the converter mouth to face the charging side, enabling the brick cup of the steel tapping hole to be vertical and ensuring that the brick cup of the steel tapping hole close to one side of the converter shell is static in the state of the upper surface, and enabling the casting material to be solidified to form a whole with the original brick cup of the steel tapping hole and the steel pipe;
and fifthly, after the casting material is solidified and is integrated with the original steel tapping hole and the steel pipe, cutting off the steel pipe with the excessive length, and polishing and trimming the surface layer of the casting material by using a polishing machine until the standard plate of the steel tapping hole of the converter is installed.
The refractory castable used in the third step is corundum.
In the fourth step, after the castable is filled, the converter is kept at 90 degrees, and the standing time of the furnace mouth facing the feeding side is more than or equal to 40min, so as to ensure that the castable is completely solidified.
The converter with 150t of ampere steel adopts a sliding plate to block slag, the total length of a brick cup of a steel tapping hole is 1520mm, 8 bricks with the length of 190mm are bonded to form the converter, and the inner diameter of the steel tapping hole is 360mm.
When the steel-tapping hole was changed to 1756 stoves after the stove was built, dismantling slide plate mechanism through observing the discovery, there was the gap between steel-tapping hole brick cup and the benchmark board, tentatively judge that steel-tapping hole brick cup has the fracture to fall the piece and take place, consequently continue to dismantle the connecting plate, when opening the benchmark board of connecting plate inlayer, the discovery had large tracts of land crackle at the steel-tapping hole brick cup that is close to one side of stove shell, the resistant material has come off all around, if continue to use there is the risk of wearing to leak. Aiming at the phenomenon, the invention is adopted to repair the phenomenon on site.
Firstly, cleaning a broken outermost layer of tap hole pocket brick, exposing a second complete brick of the tap hole pocket brick, then swinging the furnace to 90 degrees, enabling the angle of a tap hole to face to the right top, enabling the broken tap hole pocket brick to be positioned at the highest position of the converter and to be in a horizontal position, adopting a steel pipe with the inner diameter of 360mm (the same as the inner diameter of the tap hole pocket brick), continuously connecting the steel pipe with the length of 400mm on the outer side of the tap hole pocket brick to form a framework filled with corundum castable, then filling the corundum castable into a cavity (a broken tap hole pocket brick position) formed by the outer side of the steel pipe and other refractory bricks at the tap hole part of the converter, and in the filling process, adopting a vibrating rod to hold the steel pipe firmly to prevent pores from being formed in the filler, and stopping the filling of the furnace shell with the height slightly higher than the tap hole part.
Standing for 70min, shaking the furnace to the charging side, finding that the castable is completely solidified, cutting off a steel pipe with the length of about 200mm exposed outside by using a cutting gun, polishing the surface of the filled corundum charge and the cut part of the residual steel pipe by using a polishing machine until the surface is level with a furnace shell of a steel tapping hole, and installing a reference plate and a new steel tapping hole.
And finishing the on-line repair of the fragmentation accident of the seat brick at the position close to the furnace shell of the 150t converter steel tapping hole, wherein after the repair, when the furnace is disassembled till the end of the service 12202 of the furnace, the seat brick does not have the abnormal fragmentation accident, and the repair effect is remarkable.
After the technology of the invention is adopted, when the steel tapping hole brick cup at one side of the converter close to the converter shell is damaged, the on-line quick repair can be realized, after the test and the repair, the on-line quick repair can be generally continuously used for more than 5000 furnaces, the method is simple and easy to implement, and the repair effect is better.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A method for quickly repairing a converter tap hole brick cup on line comprises the following specific steps:
firstly, cleaning a damaged brick cup of a steel tapping hole close to one side of a furnace shell, and polishing and flattening;
secondly, the converter is shaken to 90 degrees, the furnace mouth faces to the charging side, the steel tapping hole is kept to be vertical to the upper surface of the converter, a steel pipe with the inner diameter being the same as the inner diameter of the brick cup of the steel tapping hole is vertically placed above the brick cup of the steel tapping hole, and the inner cavity of the steel pipe is connected with the inner cavity of the steel tapping hole to form a whole;
thirdly, filling refractory castable in a cavity formed between the outer side of the steel pipe and the furnace shell and other refractory bricks, and compacting by using a vibrating rod;
fourthly, keeping the converter at 90 degrees, enabling the converter mouth to face the charging side, enabling the brick cup of the steel tapping hole to be vertical and ensuring that the brick cup of the steel tapping hole close to one side of the converter shell is static in the state of the upper surface, and enabling the casting material to be solidified to form a whole with the original brick cup of the steel tapping hole and the steel pipe;
and fifthly, after the casting material is solidified and integrated with the original steel tapping hole and the steel pipe.
2. The method for rapidly repairing the brick cup of the tapping hole of the converter on line according to claim 1, which is characterized in that: and the cavity in the third step is formed after the damaged steel tapping hole pocket brick is cleaned and endurable, wherein the height of pouring the castable is slightly higher than the furnace shell at the position of a converter installation reference plate.
3. The method for on-line quick repair of a converter tap hole pocket brick according to claim 1, which is characterized in that: the refractory castable used in the third step is corundum.
4. The method for rapidly repairing the brick cup of the tapping hole of the converter on line according to the claim 3, which is characterized in that: the converter tap hole brick cup is close to one side of a converter shell, and due to the influences of thermal stress, mechanical stress when the tap hole is replaced and the like, damage phenomena such as cracks, faults, block falling and the like often occur, a gap can be formed after the damage occurs, and the accident of molten steel leakage along the gap is easy to occur in the using process.
5. The method for on-line quick repair of a converter tap hole pocket brick according to claim 1, which is characterized in that: and in the fifth step, cutting off the steel pipe with the redundant length, wherein the pouring height is the same as that of the reference plate for installing the converter steel tapping hole, and polishing and trimming the surface layer of the casting material by using a polishing machine.
6. The method for on-line quick repair of a converter tap hole pocket brick according to claim 1, which is characterized in that: and in the fourth step, after the castable is filled, keeping the converter at 90 degrees, and keeping the furnace mouth towards the charging side for a static time of more than or equal to 40min so as to ensure that the castable is completely solidified.
7. The method for rapidly repairing the brick cup of the tapping hole of the converter on line according to the claim 6, which is characterized in that: and in the fourth step, cleaning the steel-tapping hole brick cup until a complete steel-tapping hole brick cup layer is exposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210966071.1A CN115323105A (en) | 2022-08-12 | 2022-08-12 | Method for quickly repairing converter steel-tapping hole brick cup on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210966071.1A CN115323105A (en) | 2022-08-12 | 2022-08-12 | Method for quickly repairing converter steel-tapping hole brick cup on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115323105A true CN115323105A (en) | 2022-11-11 |
Family
ID=83923357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210966071.1A Pending CN115323105A (en) | 2022-08-12 | 2022-08-12 | Method for quickly repairing converter steel-tapping hole brick cup on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115323105A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914653A (en) * | 2010-09-27 | 2010-12-15 | 唐山建龙实业有限公司 | Method for replacing brick cup of converter tapping hole |
| JP2012162784A (en) * | 2011-02-09 | 2012-08-30 | Jfe Steel Corp | Method of constructing block brick to steel tapping hole of converter |
| CN107130080A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Method for repairing damaged outer hole brick of converter steel tapping hole |
| CN107858480A (en) * | 2017-12-25 | 2018-03-30 | 马鞍山钢铁股份有限公司 | A kind of converter taphole restorative procedure |
| CN110331252A (en) * | 2019-08-23 | 2019-10-15 | 广东韶钢松山股份有限公司 | The method that the brick cup of converter tapping hole that local damage occurs is repaired online |
-
2022
- 2022-08-12 CN CN202210966071.1A patent/CN115323105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914653A (en) * | 2010-09-27 | 2010-12-15 | 唐山建龙实业有限公司 | Method for replacing brick cup of converter tapping hole |
| JP2012162784A (en) * | 2011-02-09 | 2012-08-30 | Jfe Steel Corp | Method of constructing block brick to steel tapping hole of converter |
| CN107130080A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Method for repairing damaged outer hole brick of converter steel tapping hole |
| CN107858480A (en) * | 2017-12-25 | 2018-03-30 | 马鞍山钢铁股份有限公司 | A kind of converter taphole restorative procedure |
| CN110331252A (en) * | 2019-08-23 | 2019-10-15 | 广东韶钢松山股份有限公司 | The method that the brick cup of converter tapping hole that local damage occurs is repaired online |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106435073A (en) | Blast furnace liner overall pouring construction method for replacing spraying materials and refractory bricks | |
| CN101914653B (en) | Method for replacing brick cup of converter tapping hole | |
| CN110918967A (en) | Repairing method for inner liner of torpedo hot metal mixer car | |
| CN102399931A (en) | Hot replacement method for bottom blowing element of top-bottom combined blown converter | |
| CN104826985A (en) | Dorma gating manufacturing process | |
| CN114393186A (en) | Method for preventing casting breakout of wide and thick slab continuous casting machine | |
| CN115323105A (en) | Method for quickly repairing converter steel-tapping hole brick cup on line | |
| CN110331252B (en) | Method for repairing partially damaged brick cup of tap hole of converter on line | |
| CN208517448U (en) | A kind of main trough of blast furnace sectional repair mold | |
| CN107299171A (en) | A kind of method and resistance to material liner body for repairing the blast furnace crucibe side wall liner of resistance to material | |
| CN113337657B (en) | Blast furnace iron tapping channel operation and maintenance method and iron tapping channel | |
| CN108971471A (en) | A kind of carbon-free steel cladding conjunction packet bottom construction technology | |
| CN109628704B (en) | RH vacuum refining furnace and building method thereof | |
| CN111235335B (en) | Method for repairing skimmer on line | |
| CN112629265A (en) | Repairing method for inner liner of torpedo hot metal mixer car | |
| RU2469101C1 (en) | Repair method of vacuumiser branch pipe lining | |
| JP3045461B2 (en) | Repair method of damaged part of blast furnace wall | |
| JP3613816B2 (en) | Blast furnace wall stave repair method | |
| CN113913574B (en) | Method for prolonging service life of main channel steel groove of blast furnace | |
| CN214735869U (en) | Blast furnace slag iron runner swinging runner baking device | |
| CN220959619U (en) | Electric furnace masonry type chute | |
| CN103045807B (en) | Vacuum circulation degassing insert tube | |
| CN209243090U (en) | The interim iron mouth device of gobbed up | |
| KR100811627B1 (en) | bubbling plug having sleeve block | |
| US2894739A (en) | Ladle relining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221111 |