CN105154607A - Method for repairing cooling wall of blast furnace online - Google Patents
Method for repairing cooling wall of blast furnace online Download PDFInfo
- Publication number
- CN105154607A CN105154607A CN201510514611.2A CN201510514611A CN105154607A CN 105154607 A CN105154607 A CN 105154607A CN 201510514611 A CN201510514611 A CN 201510514611A CN 105154607 A CN105154607 A CN 105154607A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- cooling stave
- copper
- water inlet
- repairing
- 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
Abstract
The invention discloses a method for repairing a cooling wall of a blast furnace online. The method comprises the steps that 1, water supply at the damaged position of the cooling wall is cut off; 2, drilling is carried out according to the determined damaged position; 3, copper cooling bars are inserted in drilled holes and comprise inner columns, outer shells, water inlet pipes, water outlet pipes and flange plates, the interior of each water inlet pipe is of a spiral structure, the water outlet pipes are connected with the tail ends of the water inlet pipes and penetrate the outer shells, and the flange plates are fixed to the outer shells; 4, the water inlet pipes and the water outlet pipes of the copper cooling bars are connected with undamaged pipes in the cooling wall respectively; and 5, the flange plates of the copper cooling bars are welded to a furnace shell of the cooling wall, and water supply is restored. According to the method for online repairing, on the premise that major and intermediate overhauling is not carried out on the blast furnace, the aim of repairing the cooling wall of the blast furnace in time and then achieving cooling is achieved, great significance to stable furnace temperature of the blast furnace is achieved, and the good effects on the long service life and stable and high yield of the blast furnace are achieved.
Description
Technical field
The present invention relates to blast furnace field of metallurgy, be specifically related to a kind of method that blast furnace cooling stave is repaired online.
Background technology
Blast furnace cooling stave is the important water-cooled part of blast furnace lining, be arranged on the positions such as the shaft of blast furnace, furnace bosh, bosh, cupola well, not only bear high temperature, also bear the wearing and tearing of furnace charge, the washing away of the erosion of slag and Gas Flow, the over-all propertieies such as good hot strength, heat shock resistance, anti-rapid heat cycle must be possessed.Cooling wall energy effectively prevents furnace shell to be heated and burns red, and blast furnace lining brick is ablated rear main by slag crust protection cooling stave itself, and maintains the safety in production of blast furnace.
At present, blast furnace cooling stave generally adopts soft water closed circulating to cool, and stove labour, close to the middle and later periods, keeps away unavoidable accident of burning leakage cooling stave, when occurring burning leakage cooling stave situation, traditional trapping structure burning is leaked after cooling stave blocks to add water spray process again, and cooling intensity can be made like this to reduce, and State of Blast Furnace shape changes, fluctuate if any the working of a furnace, can cause around damaged cooling wall and be burnt leakage in a large number, control to cause to fluctuate widely to blast furnace temperature, have a strong impact on the normal production of blast furnace.
Summary of the invention
In view of this, a kind of method that the application provides blast furnace cooling stave to repair online, under the prerequisite that described online restorative procedure can not carry out medium-capital overhauling at blast furnace, cooling object is reached after blast furnace cooling stave is repaired in time, play larger effect to blast furnace temperature is stable, have good effect to prolonging campaign, stable and high yields.
For solving above technical problem, technical scheme provided by the invention is a kind of method that blast furnace cooling stave is repaired online, said method comprising the steps of:
(1) cooling stave of damage location is cut off the water;
(2) hole by the damage location determined;
(3) in the hole of having bored, copper-bar cooler is inserted; Described copper-bar cooler comprises inner cylinder, shell, water inlet pipe, rising pipe, ring flange, and described water inlet pipe inside is helix structure, and described rising pipe connects described water inlet pipe end, and through described shell, described ring flange is fixed on described shell;
(4) water inlet pipe of described copper-bar cooler, rising pipe are connected with unbroken pipeline in described cooling stave respectively;
(5) furnace shell of the ring flange of described copper-bar cooler with described cooling stave is welded, resume water supply.
Further, the ring flange of described copper-bar cooler is also provided with a grout pipe.
Further, in described step (2), the angle of boring is the wall perpendicular to described cooling stave.
Further, in described step (2), the degree of depth of boring is 580-600mm.
Further, in described step (2), the diameter of boring is not less than 105mm.
Further, the external diameter of described copper-bar cooler is 100mm, and length is 200mm.
Further, the degree of depth that in described step (3), copper-bar cooler inserts is more than 50% of described cooling stave thickness.
Further, arrange multiple copper-bar cooler according to cooling wall breakage situation and form cooling stick group, the pipeline of described multiple copper-bar cooler is connected successively.
Further, the water-in of described cooling stick group and the water outlet temperature difference are not more than 6 DEG C.
Further, water inlet pipe and the rising pipe of described copper-bar cooler are metallic hose, and described water inlet pipe and rising pipe are provided with ball valve.
Compared with prior art, it is described in detail as follows the application: technical scheme provides a kind of method that blast furnace cooling stave is repaired online, said method comprising the steps of:
(1) cooling stave of damage location is cut off the water;
(2) hole by the damage location determined;
(3) in the hole of having bored, copper-bar cooler is inserted; Described copper-bar cooler comprises inner cylinder, shell, water inlet pipe, rising pipe, ring flange, described water inlet pipe inside is helix structure, and make current helicoidal flow, described rising pipe connects described water inlet pipe end, and through described shell, described ring flange is fixed on described shell;
(4) water inlet pipe of described copper-bar cooler, rising pipe are connected with unbroken pipeline in described cooling stave respectively;
(5) furnace shell of the ring flange of described copper-bar cooler with described cooling stave is welded, resume water supply.
In described technical scheme, adopt the method for the outer mechanical tapping of stove, because of the circular rule of pore-forming, there is no focal point of stress, any impact can not be produced on last furnace shell intensity; The miscellaneous work changing cooling stave and the spray repair (or building by laying bricks or stones) exempting refractory lining in stove work can be removed from; And the construction period is short, only need the time utilizing regular maintenance, intert when stockline need not fall in blast furnace staying and carry out completing.Therefore, under the prerequisite that described in the application, online restorative procedure can not carry out medium-capital overhauling at blast furnace, after blast furnace cooling stave is repaired in time, reach cooling object, play larger effect to blast furnace temperature is stable, have good effect to prolonging campaign, stable and high yields.
Accompanying drawing explanation
Fig. 1 is in the method for repairing online of blast furnace cooling stave described in the application, the mounting structure figure of cooling stave and copper-bar cooler;
Fig. 2 is the structure iron of copper-bar cooler described in the application;
Fig. 3 is the right view of Fig. 2.
Embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of method that blast furnace cooling stave is repaired online, said method comprising the steps of:
(1) cooling stave 1 of damage location is cut off the water;
(2) hole by the damage location determined; The angle of boring is the wall perpendicular to described cooling stave 1, and the degree of depth of boring is 596mm, and the diameter of boring is 110mm;
(3) in the hole of having bored, copper-bar cooler 2 is inserted; Described copper-bar cooler 2 comprises inner cylinder 3, shell 4, water inlet pipe 5, rising pipe 6, ring flange 7, described water inlet pipe 5 inside is helix structure, make current helicoidal flow, described rising pipe 6 connects described water inlet pipe 5 end, and through described shell 4, water inlet pipe 5 and the rising pipe 6 of described copper-bar cooler 2 are metallic hose, described water inlet pipe 5 and rising pipe 6 are provided with ball valve (not shown), described ring flange 7 is fixed on described shell 4, ring flange 7 is also provided with a grout pipe 8; The external diameter of described copper-bar cooler 2 is 100mm, and length is 200mm, and the degree of depth that copper-bar cooler 2 inserts is more than 52% of described cooling stave 1 thickness;
(4) water inlet pipe 5 of described copper-bar cooler 2, rising pipe 6 are connected with unbroken pipeline 10 in described cooling stave 1 respectively;
(5) furnace shell 9 of the ring flange 7 of described copper-bar cooler 2 with described cooling stave 2 is welded, resume water supply.
Arrange multiple copper-bar cooler 2 according to cooling stave 1 breakage and form cooling stick group, the pipeline of described multiple copper-bar cooler 2 is connected successively, and water-in and the water outlet temperature difference of described cooling stick group are not more than 6 DEG C.
Wherein, connection by metal hose is adopted between copper-bar cooler 2 and between copper-bar cooler 2 and outside inlet tube and outlet tube, the mode of series winding is often adopted to connect between row copper-bar cooler 2,5 copper-bar coolers 2 are formed a string, the equal mounting ball valve of water inlet pipe and water outlet pipe of each copper-bar cooler 2, so that the maintenance in later stage and leak detection; Copper-bar cooler 2 cooling water adopts high pressure industrial water (or middle pressure service water).
Under the prerequisite that above-mentioned online restorative procedure can not carry out medium-capital overhauling at blast furnace, after blast furnace cooling stave is repaired in time, reach cooling object, play larger effect to blast furnace temperature is stable, have good effect to prolonging campaign, stable and high yields.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a blast furnace cooling stave method of repairing online, is characterized in that: said method comprising the steps of:
(1) cooling stave of damage location is cut off the water;
(2) hole by the damage location determined;
(3) in the hole of having bored, copper-bar cooler is inserted; Described copper-bar cooler comprises inner cylinder, shell, water inlet pipe, rising pipe, ring flange, and described water inlet pipe inside is helix structure, and described rising pipe connects described water inlet pipe end, and through described shell, described ring flange is fixed on described shell;
(4) water inlet pipe of described copper-bar cooler, rising pipe are connected with unbroken pipeline in described cooling stave respectively;
(5) furnace shell of the ring flange of described copper-bar cooler with described cooling stave is welded, resume water supply.
2. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: the ring flange of described copper-bar cooler is also provided with a grout pipe.
3. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: in described step (2), the angle of boring is the wall perpendicular to described cooling stave.
4. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: in described step (2), the degree of depth of boring is 580-600mm.
5. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: in described step (2), the diameter of boring is not less than 105mm.
6. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: the external diameter of described copper-bar cooler is 100mm, and length is 200mm.
7. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: the degree of depth that in described step (3), copper-bar cooler inserts is more than 50% of described cooling stave thickness.
8. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: arrange multiple copper-bar cooler according to cooling wall breakage situation and form cooling stick group, the pipeline of described multiple copper-bar cooler is connected successively.
9. a kind of blast furnace cooling stave according to claim 8 method of repairing online, is characterized in that: water-in and the water outlet temperature difference of described cooling stick group are not more than 6 DEG C.
10. a kind of blast furnace cooling stave according to claim 1 method of repairing online, is characterized in that: water inlet pipe and the rising pipe of described copper-bar cooler are metallic hose, and described water inlet pipe and rising pipe are provided with ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514611.2A CN105154607A (en) | 2015-08-20 | 2015-08-20 | Method for repairing cooling wall of blast furnace online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514611.2A CN105154607A (en) | 2015-08-20 | 2015-08-20 | Method for repairing cooling wall of blast furnace online |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105154607A true CN105154607A (en) | 2015-12-16 |
Family
ID=54795648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510514611.2A Pending CN105154607A (en) | 2015-08-20 | 2015-08-20 | Method for repairing cooling wall of blast furnace online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105154607A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586457A (en) * | 2016-03-16 | 2016-05-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Partial furnace casing cooling wall damage repairing method suitable for late campaign of blast furnace |
| CN106676216A (en) * | 2017-01-09 | 2017-05-17 | 中冶赛迪上海工程技术有限公司 | Method for maintaining industrial furnace cooling wall |
| CN109182630A (en) * | 2018-11-13 | 2019-01-11 | 四川德胜集团钒钛有限公司 | The restorative procedure of damaged cooling wall of blast furnace |
| CN111270034A (en) * | 2020-03-25 | 2020-06-12 | 广东韶钢松山股份有限公司 | Method for installing micro cooling bar of cooling wall of blast furnace |
| CN111637310A (en) * | 2020-06-03 | 2020-09-08 | 唐山市开平区泽成冶金机械有限公司 | Online repair method for leakage of water pipe of cooling wall of blast furnace |
| CN112111619A (en) * | 2019-06-21 | 2020-12-22 | 上海梅山钢铁股份有限公司 | On-line processing method for damage of soft water cooling wall |
| CN114622045A (en) * | 2021-12-01 | 2022-06-14 | 武汉科技大学 | Method for reducing temperature of blast furnace shell by using cooling column and cooling plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327899A (en) * | 1979-04-09 | 1982-05-04 | Nippon Kokan Kabushiki Kaisha | Stave cooling device having unwelded double tube |
| CN2415035Y (en) * | 2000-04-21 | 2001-01-17 | 佘克事 | Copper plate cooling rod |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
| CN201713531U (en) * | 2010-04-22 | 2011-01-19 | 高新宝 | Cooling bar for blast furnace |
-
2015
- 2015-08-20 CN CN201510514611.2A patent/CN105154607A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327899A (en) * | 1979-04-09 | 1982-05-04 | Nippon Kokan Kabushiki Kaisha | Stave cooling device having unwelded double tube |
| CN2415035Y (en) * | 2000-04-21 | 2001-01-17 | 佘克事 | Copper plate cooling rod |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
| CN201713531U (en) * | 2010-04-22 | 2011-01-19 | 高新宝 | Cooling bar for blast furnace |
Non-Patent Citations (1)
| Title |
|---|
| 王永贵 等: "重钢5号高炉特别维护生产实践", 《炼铁技术通讯》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586457A (en) * | 2016-03-16 | 2016-05-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Partial furnace casing cooling wall damage repairing method suitable for late campaign of blast furnace |
| CN105586457B (en) * | 2016-03-16 | 2017-07-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | It is a kind of to use as a servant the method that later stage local stove skin cooling wall breakage is repaired suitable for State of Blast Furnace |
| CN106676216A (en) * | 2017-01-09 | 2017-05-17 | 中冶赛迪上海工程技术有限公司 | Method for maintaining industrial furnace cooling wall |
| CN106676216B (en) * | 2017-01-09 | 2018-10-30 | 中冶赛迪上海工程技术有限公司 | A method of for safeguarding industrial furnace cooling wall |
| CN109182630A (en) * | 2018-11-13 | 2019-01-11 | 四川德胜集团钒钛有限公司 | The restorative procedure of damaged cooling wall of blast furnace |
| CN112111619A (en) * | 2019-06-21 | 2020-12-22 | 上海梅山钢铁股份有限公司 | On-line processing method for damage of soft water cooling wall |
| CN111270034A (en) * | 2020-03-25 | 2020-06-12 | 广东韶钢松山股份有限公司 | Method for installing micro cooling bar of cooling wall of blast furnace |
| CN111637310A (en) * | 2020-06-03 | 2020-09-08 | 唐山市开平区泽成冶金机械有限公司 | Online repair method for leakage of water pipe of cooling wall of blast furnace |
| CN114622045A (en) * | 2021-12-01 | 2022-06-14 | 武汉科技大学 | Method for reducing temperature of blast furnace shell by using cooling column and cooling plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105154607A (en) | Method for repairing cooling wall of blast furnace online | |
| CN102912051B (en) | Method for exchanging cooling wall of blast furnace taphole online | |
| CN102676730A (en) | Converter bottom blowing air brick, special drilling machine and quick thermal replacement method of air brick | |
| CN100595284C (en) | Maintaining method for blast furnace | |
| CN109306387B (en) | Method for protecting and repairing furnace shell after blast furnace cooling wall burning loss | |
| CN103757167A (en) | Iron notch pretreatment method used during blowing in of blast furnace | |
| CN103924017B (en) | A kind of method changing the large cover of blast-furnace tuyere | |
| CN107805679B (en) | A kind of blast-furnace tuyere burn after rapid plugging method | |
| CN101457265A (en) | Method for repairing blast furnace cooling stave | |
| CN204151368U (en) | The natural air cooled device of iron alloy electric furnace furnace bottom | |
| CN104390468B (en) | A kind of industrial silicon smelting furnace eye restorative procedure | |
| CN203559063U (en) | Blast furnace thin-wall lining | |
| CN215668077U (en) | Iron mouth oxygen lance for Ou smelting furnace | |
| CN103045794B (en) | Water cooling furnace mouth and converter | |
| CN111440909B (en) | Water-saving multi-layer water supply pipe blast furnace cooling wall structure and application process thereof | |
| CN205576199U (en) | Exhaust -heat boiler cast iron type feed opening water cooling plant | |
| CN203320034U (en) | Large-scale blast furnace hearth soft water cooling treatment device | |
| CN103673632B (en) | Crude copper discharge outlet of copper metallurgical furnace | |
| CN106636538A (en) | Masonry method of converter hearth and molten pool part | |
| CN201581092U (en) | Combined cooling wall | |
| CN201713531U (en) | Cooling bar for blast furnace | |
| CN203820813U (en) | Cooling wall structure of joint part of bosh and hearth of blast furnace | |
| CN103512361B (en) | Furnace brick patching method of oxygen enrichment top-blown copper metallurgical furnace | |
| CN204874573U (en) | Prosthetic devices of blast furnace stave water pipe | |
| CN216712133U (en) | Tool for improving iron notch plugging efficiency of blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |