CN108504807A - A kind of levelling control method of Blast Furnace Bottom refractory material construction - Google Patents
A kind of levelling control method of Blast Furnace Bottom refractory material construction Download PDFInfo
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- CN108504807A CN108504807A CN201810400971.3A CN201810400971A CN108504807A CN 108504807 A CN108504807 A CN 108504807A CN 201810400971 A CN201810400971 A CN 201810400971A CN 108504807 A CN108504807 A CN 108504807A
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- band steel
- levelling
- ramming
- furnace bottom
- angle steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/04—Blast furnaces with special refractories
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- 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)
- Blast Furnaces (AREA)
Abstract
The levelling control method of specifically a kind of Blast Furnace Bottom refractory material construction of the present invention；It is characterized in that：It is top with water cooling tube hub line, carries out castable construction；After the completion of castable construction, on the basis of the actual installation absolute altitude of air port center, the levelling absolute altitude of material is smash for charcoal, the sideline of band steel and angle steel column is drawn on drop-bottom；It waits for that a row band steel is all placed to finish, i.e., determines two-end-point solid welding；Whole band steels are finished with angle steel column spot welding, check again for its flatness by measurement, confirmation is errorless, finally by band steel and angle steel full weld；It polishes flat for the tumor scar application electric angle grinder of part；Ramming mass is constructed；When last layer of ramming, evened out along band steel belt surface with scraper is evened out, then levelling with sanding machine, into next procedure.This method control accuracy is high, greatly promotes the resistance to material construction quality of Blast Furnace Bottom, convenient for promoting.
Description
Technical field
The present invention relates to blast furnace construction field, the levelling control method of specifically a kind of Blast Furnace Bottom refractory material construction.
Background technology
Blast furnace technology passes through long-run development, has simple for process, and yield is big, efficient, low power consumption and other advantages, economical
Index is good, for the main method of large-scale production steel at present.
In blast furnace building course, in the service life of the service life of blast furnace firebrick lining, especially Blast Furnace Bottom, blast furnace decide
Service life.The large and medium-sized blast furnace in China mostly uses full carbon brick furnace bottom or carbon brick and high-alumina brick composite burner bottom, and is used under carbon brick furnace bottom
Carbon ramming mass is levelling.The most important condition for ensuring the smooth laying of carbon brick is the levelling of carbon ramming mass.Though carbon ramming mass has
There is the features such as thermal conductivity is high, and room temperature is constructed without pernicious gas loss, and construction working condition is preferable, but its primary raw material is artificial stone
Ink, due to the inherent characteristic of artificial graphite, it is low that compactness is made in construction firm by ramming, levelling more difficult, to affect the heat transfer item of furnace bottom
Part.
It is found through being retrieved to existing technical literature, the document report to solve the above problems is more rarely seen.Zhang Tao et al. is one
Kind Blast Furnace Bottom carbon ramming mass is evened out in device (CN201320316262.X), is proposed with a kind of shovel head and one end and institute
State shovel head intermediate position connection and with the shovel bar at horizontal plane angle at 45 °, evened out after the completion of levelling benchmark and be higher by smashing for benchmark
Dnockout.But the levelling benchmark problem of unresolved furnace bottom ramming mass.
Invention content
It is an object of the invention to solve the levelling difficult problem of blast furnace bottom carbon ramming mass, it is resistance to provide a kind of Blast Furnace Bottom
The levelling control method of fiery material construction, it is ensured that construction quality improves the heat conduction efficiency of super-huge blast furnace bottom.
In order to achieve the above object, the invention is realized in this way：
It is finished Step 1: being poured in blast furnace foundation, after furnace shell to air port or more is installed, cleans furnace bottom；
Step 2: being top with water cooling tube hub line, castable construction is carried out；Castable pouring is carried out first；From both sides to centre
I-beam by time carry out, stir castable when will strictly press regulation control amount of water；With micro dip vibrating head when pouring
It carefully shocks, then levelling by water cooling tube hub with special scraper plate, control errors are in ± 10mm；The castable hand that will be stirred
Cart is transported to construction point and is poured into a mould by sequence from inside to outside；
Step 3: after the completion of castable construction, on the basis of the actual installation absolute altitude of air port center, according to the brick layer of furnace bottom, furnace wall
The vertical dimension that thickness determines returns to downwards the absolute altitude that charcoal smashes layer surface, and as charcoal smashes the levelling absolute altitude of material, and the relief is thrown
Onto furnace wall；On the basis of stove inner cross center line, the sideline of band steel and angle steel column is drawn on drop-bottom；Band steel spacing is
800mm, angle steel spacing are 400mm；
Step 4: each row band steel first welds the angle steel column at both ends, then band steel face is close to the one of angle steel column with cramp frame
The wing clamps, it is intermediate every 2m or so with timber wedge pad below band steel；
It is finished Step 5: waiting for that a row band steel is all placed, it is levelling with level measurement, per levelling complete row band steel i.e. by two-end-point
Solid welding is fixed；
Step 6: whole band steels are finished with angle steel column spot welding, its flatness is checked again for by measurement, confirmation is errorless, finally will
Band steel and angle steel full weld.The connector of adjacent two sections of band steels should be placed at angle steel column；
Step 7: whole band steel net welding finish, make to check for the last time by measuring；For the tumor scar application angular grinding of part
Machine polishes flat；
Step 8：Ramming mass is constructed；Every layer of layer thickness is controlled by predetermined size, is used in combination material scraping plate to strike off charge level, especially
In the first layered material of ramming, the gap between band steel and furnace bottom is blocked using flitch, prevents from squeezing out charcoal material when ramming；Ramming
When, first using pneumatic pick, ramming is wanted in ramming, the corner of especially diagonal steel column forward in such a way that a hammer pressure half is hammered into shape along band steel both sides
5-6 times, until drafts reaches design requirement；
Step 9：When last layer of ramming, it should be higher by 2-3mm than band steel, evened out along band steel belt surface with scraper is evened out,
Use sanding machine levelling again, into next procedure.
The present invention is much smaller than the characteristic of flat horizontal surface using the side stress and deformation of flat bar stock, effectively reduces the welding in construction
Etc. stress deformation caused by processes interfere, ensure refractory furnace bottom construction flatness control；This method control accuracy is high, greatly promotes
The resistance to material construction quality of Blast Furnace Bottom, convenient for promoting.
Description of the drawings
Fig. 1 furnace bottom castables pour sequential schematic.
Fig. 2 band steel net layout diagrams.
Fig. 3 cooling wall segmentation and slicing mounting plane schematic diagrames.
Gap filler pours formwork between Fig. 4 cooling walls.
Gap filling forms closed-loop schematic diagram between Fig. 5 cooling walls.
Specific implementation mode
It is further illustrated the present invention below by way of specific embodiment.
As shown in figure 5, a kind of levelling control method of Blast Furnace Bottom refractory material construction；Including
Step 1：It pours and finishes in blast furnace foundation, after furnace shell to air port or more is installed, clean furnace bottom；
Step 2：As shown in Figure 1, being top with water cooling tube hub line, castable construction is carried out；Castable pouring is carried out first.By
Both sides, by time progress, strictly amount of water will be controlled when stirring castable to intermediate I-beam by regulation.It is inserted with miniature when pouring
Enter formula vibrating head carefully to shock, then levelling by water cooling tube hub with special scraper plate, control errors are in ± 10mm.By what is be stirred
Castable is transported to construction point with trolley and is poured into a mould by shown direction；
Step 3：After the completion of castable construction, with air port center actual installation absolute altitude（Average value）On the basis of, according to furnace bottom, stove
The brick layer thickness of wall（Including mortar joint）Determining vertical dimension returns to downwards the absolute altitude that charcoal smashes layer surface, and it is levelling to smash material for as charcoal
Absolute altitude, and the relief is thrown on furnace wall.On the basis of stove inner cross center line, band steel is drawn on drop-bottom and angle steel is vertical
The sideline of column.Band steel spacing is 800mm, and angle steel spacing is 400mm（As shown in Figure 2）.
Step 4：Each row band steel first welds the angle steel column at both ends, and angle steel column then is close in band steel face with cramp frame
A wing clamp, it is intermediate every 2m or so with timber wedge pad below band steel.
Step 5：It waits for that a row band steel is all placed to finish, it is levelling with level measurement, it will two per levelling complete row band steel
Endpoint solid welding is fixed.
As shown in figure 4, step 6：Whole band steels are finished with angle steel column spot welding, check again for its flatness by measurement, really
Recognize it is errorless, finally by band steel and angle steel full weld.The connector of adjacent two sections of band steels should be placed at angle steel column.
Step 7：Whole band steel net welding finish, and make last time check by measuring.It is angular for the tumor scar application of part
Sanding machine polishes flat；
As shown in figure 5, step 8：Ramming mass is constructed.Every layer of layer thickness presses predetermined size（General 100-150mm）Control, and
Charge level is struck off with material scraping plate, especially in the first layered material of ramming, the gap between band steel and furnace bottom is blocked using flitch, is prevented
Only charcoal material is squeezed out when ramming.When ramming, first use pneumatic pick along band steel both sides the ramming forward in such a way that a hammer pressure half is hammered into shape, it is especially right
Ramming 5-6 times are wanted in the corner of angle steel column, until drafts reaches design requirement.
Step 9：When last layer of ramming, it should be higher by 2-3mm than band steel, shoveled along band steel belt surface with scraper is evened out
It is flat, as shown in figure 3, using sanding machine levelling again, into next procedure.
The present invention is much smaller than the characteristic of flat horizontal surface using the side stress and deformation of flat bar stock, effectively reduces the welding in construction
Etc. stress deformation caused by processes interfere, ensure refractory furnace bottom construction flatness control；Method control accuracy is high, greatly promotes height
Stove refractory furnace bottom construction quality, convenient for promoting.
Claims (1)
1. a kind of levelling control method of Blast Furnace Bottom refractory material construction, it is characterized in that：
It is finished Step 1: being poured in blast furnace foundation, after furnace shell to air port or more is installed, cleans furnace bottom；
Step 2: being top with water cooling tube hub line, castable construction is carried out；Castable pouring is carried out first；From both sides to centre
I-beam by time carry out, stir castable when will strictly press regulation control amount of water；With micro dip vibrating head when pouring
It carefully shocks, then levelling by water cooling tube hub with special scraper plate, control errors are in ± 10mm；The castable hand that will be stirred
Cart is transported to construction point and is poured into a mould by sequence from inside to outside；
Step 3: after the completion of castable construction, on the basis of the actual installation absolute altitude of air port center, according to the brick layer of furnace bottom, furnace wall
The vertical dimension that thickness determines returns to downwards the absolute altitude that charcoal smashes layer surface, and as charcoal smashes the levelling absolute altitude of material, and the relief is thrown
Onto furnace wall；On the basis of stove inner cross center line, the sideline of band steel and angle steel column is drawn on drop-bottom；Band steel spacing is
800mm, angle steel spacing are 400mm；
Step 4: each row band steel first welds the angle steel column at both ends, then band steel face is close to the one of angle steel column with cramp frame
The wing clamps, it is intermediate every 2m or so with timber wedge pad below band steel；
It is finished Step 5: waiting for that a row band steel is all placed, it is levelling with level measurement, per levelling complete row band steel i.e. by two-end-point
Solid welding is fixed；
Step 6: whole band steels are finished with angle steel column spot welding, its flatness is checked again for by measurement, confirmation is errorless, finally will
Band steel and angle steel full weld；
The connector of adjacent two sections of band steels should be placed at angle steel column；
Step 7: whole band steel net welding finish, make to check for the last time by measuring；For the tumor scar application angular grinding of part
Machine polishes flat；
Step 8：Ramming mass is constructed；Every layer of layer thickness is controlled by predetermined size, is used in combination material scraping plate to strike off charge level, especially
In the first layered material of ramming, the gap between band steel and furnace bottom is blocked using flitch, prevents from squeezing out charcoal material when ramming；Ramming
When, first using pneumatic pick, ramming is wanted in ramming, the corner of especially diagonal steel column forward in such a way that a hammer pressure half is hammered into shape along band steel both sides
5-6 times, until drafts reaches design requirement；
Step 9：When last layer of ramming, it should be higher by 2-3mm than band steel, evened out along band steel belt surface with scraper is evened out,
Use sanding machine levelling again, into next procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400971.3A CN108504807B (en) | 2018-04-28 | 2018-04-28 | Leveling control method for blast furnace bottom refractory material construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400971.3A CN108504807B (en) | 2018-04-28 | 2018-04-28 | Leveling control method for blast furnace bottom refractory material construction |
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| CN108504807A true CN108504807A (en) | 2018-09-07 |
| CN108504807B CN108504807B (en) | 2020-05-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929928A (en) * | 2018-09-12 | 2018-12-04 | 北京联合荣大工程材料股份有限公司 | A kind of blast furnace bottom leveling construction method |
| CN111518974A (en) * | 2020-04-24 | 2020-08-11 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111926131A (en) * | 2020-07-17 | 2020-11-13 | 上海宝冶冶金工程有限公司 | Ramming material construction control tool |
| CN115181823A (en) * | 2022-07-08 | 2022-10-14 | 山西太钢不锈钢股份有限公司 | Quantitative construction method for carbon ramming material of blast furnace hearth |
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| CN201460226U (en) * | 2009-05-27 | 2010-05-12 | 中冶实久建设有限公司 | Blast furnace bottom leveling scraper |
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| CN201799804U (en) * | 2010-09-01 | 2011-04-20 | 天津二十冶建设有限公司 | Flat steel clamping device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929928A (en) * | 2018-09-12 | 2018-12-04 | 北京联合荣大工程材料股份有限公司 | A kind of blast furnace bottom leveling construction method |
| CN111518974A (en) * | 2020-04-24 | 2020-08-11 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111518974B (en) * | 2020-04-24 | 2021-10-01 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111926131A (en) * | 2020-07-17 | 2020-11-13 | 上海宝冶冶金工程有限公司 | Ramming material construction control tool |
| CN115181823A (en) * | 2022-07-08 | 2022-10-14 | 山西太钢不锈钢股份有限公司 | Quantitative construction method for carbon ramming material of blast furnace hearth |
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| CN108504807B (en) | 2020-05-26 |
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