CN102618677A - Method for cleaning materials in large-scale blast furnace in overhaul - Google Patents
Method for cleaning materials in large-scale blast furnace in overhaul Download PDFInfo
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- CN102618677A CN102618677A CN2012100754245A CN201210075424A CN102618677A CN 102618677 A CN102618677 A CN 102618677A CN 2012100754245 A CN2012100754245 A CN 2012100754245A CN 201210075424 A CN201210075424 A CN 201210075424A CN 102618677 A CN102618677 A CN 102618677A
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Abstract
A method for cleaning materials in a large-scale blast furnace in overhaul belongs to ironmaking blast furnaces, and particularly relates to a blast furnace repairing method. The method includes the steps: cooling the furnace, setting a slag lifting and breaking machine and a slagging machine, lifting an excavator into the furnace, mechanically cleaning the materials in the furnace, and lifting out the excavator. The method is already applied to five large-scale blast furnaces in overhaul, and has the advantages that the method is novel in concept, construction machines are simple, slagging personnel is reduced greatly, labor intensity is lowered, slagging speed is high, slagging time is reduced, overhaul time is shortened, overhaul efficiency is improved, and the blast furnace can be put in production in advance.
Description
Technical field
The invention belongs to iron-smelting blast furnace, relate in particular to the blast furnace repair method.
Technical background
It is first working procedure that blast furnace overhaul is taken off stove, removes inner iron dirt of burner hearth and scum.Current method of taking off the stove employing is: after the blast furnace cooling, set up scaffolding in the stove; Manual work is skimmed, and adopts pneumatic pick, sledgehammer and drill rod broken; Artificial scarfing cinder, hand digs, takes on and lift, and pours out outside the stove.Its defective is: because the iron dirt is solid unusually in the stove, a large amount of scums are arranged again, operating environment is abominable, and labour intensity is big, and the operating personnel is people more than 40 nearly, and construction cost is high; It is long to take off the stove time, reaches 15-25 days, have reach 40 surplus day, it is long in time limit to repair stove, delays the blast furnace production time, has a strong impact on blast furnace ironmaking production.
Summary of the invention
In order to overcome the defective that prior art exists, the purpose of this invention is to provide material method for cleaning in a kind of large blast furnace overhaul stove, the construction apparatus is set in the stove; Employing machinery is skimmed, and clears up material in the stove fast, repaiies stove as early as possible; Reduce stove time and the personnel of taking off; Shorten and repair furnaceman's phase, reduce and repair the stove expense, blast furnace puts into production as early as possible.
Material method for cleaning in the large blast furnace overhaul stove follows these steps to carry out:
1, black furnace
1), stop in stove behind the feed beginning black furnace by the cooling of inwardly sprinkling water of air port and cross temperature place, 60-80 hour black furnace time, the interior temperature of stove is reduced to below 30 ℃;
2), ventilating is provided with 2-3 typhoon machine, ventilates, lowers the temperature, and improves operating environment;
3), the cleaning chute repairs the hole, gets through handling excavator passage, the wide 1.5-2m of the high 2-2.5m in hole, and observe furnace roof inwall " extension knurl " situation prevents to fall in the construction and hurts sb.'s feelings.
2, the broken slag of lifting, deslagging apparatus are set
1), utilize stokehold driving, furnace roof driving, chain block is set drives a vehicle with furnace roof and cooperate utilization;
2), haulage gear is set, the chute access opening of throat platform is other establishes slow reel windlass, the fixed pulley group of traction rope outside being located at blast furnace walked around body of heater, passes blast furnace by the fire hole with chute access opening opposite and is back to by the chute access opening;
3), the deslagging conveyor is set, after blast furnace tuyere small sleeve, middle cover are removed, in the symmetrical air port of blast furnace conveyor is set, by stretching out outside the stove in the stove.
3, the handling excavator is to stove
1), driving handling in stokehold removes excavator wheel house outer cover, winches to casting house by the stokehold driving, excavator is parked in furnace roof driving erection opening below from walking to tuyere platform;
2), the equipped quartering hammer of excavator, excavator base machine and chain belt are concordant before vertically, the arm beam stretches, and is secured by chain block, when preventing that fuselage from rotating, locks the generation that does not tightly cause the mass centre changing accident because of hydraulicefficiency system;
3), confirm that excavator suspending way and sling point furnace roof driving gib head hangs three wireline; Two long wireline are connected on the lifting point before and after the excavator; A strap is then hung the digger arm beam by armed lever, chain block; Start the furnace roof driving, with the equilibrium state of chain block adjustment excavator;
4), furnace roof driving handling excavator
Three sling points of excavator are hung in the furnace roof driving, after the adjustment balance, start the furnace roof driving, and excavator is winched to chute access opening top; The adjustment chain block makes the excavator set angle that turns forward, and fuselage is over against the chute access opening; The windlass haulage cable is held the preceding sling point of fuselage, starts windlass and in stove, draws, and the driving gib head falls slowly, and windlass slowly draws, till excavator is put into burner hearth bottom.
4, scarfing cinder in the stove
1), removal driving gib head, wireline, chain block and haulage cable, assembling wheel house cover, check and adjustment excavator; After going into operation,, arrange 3-4 name excavator officer Lian Ban operation, guarantee the continuity and the efficient of construction according to the size of furnace volume;
2), break starts excavator, quartering hammer to around the furnace wall and the iron of bottom dirt, slag iron carry out fragmentation, slag charge height 3-5m, layering is from top to bottom carried out, until lower edge, air port, iron mouth and furnace chamber bottom;
3), the deslagging excavator bucket that changes the outfit, with iron dirt, the slag iron of bucket, shovel on the conveyor fragmentation, start conveyor have bad luck come out of the stove outside, transport the working-yard then.
5, hang out excavator take off remove in the furnace accretion bundle, stove clean after, with excavator by handling in the stove to stove.
The inventive method is implemented in five blast furnace overhauls of our company.
Prior art is compared, and advantage is: novel, the construction apparatus is brief, and the personnel that skim reduce significantly, and labour intensity reduces; The speed of skimming is fast, reduces slag-removing time, shortens and repaiies furnaceman's phase, improves and repaiies the efficiency of furnace, and blast furnace puts into production in advance.
Description of drawings
The contrast accompanying drawing is described further the present invention below.
Fig. 1 is a material method for cleaning construction appliance configuration synoptic diagram (excavator is gone into the stokehold) in the large blast furnace overhaul stove.
Fig. 2 is material method for cleaning construction appliance configuration synoptic diagram in the large blast furnace overhaul stove (excavator go into stove after).
Fig. 3 is material method for cleaning construction appliance configuration synoptic diagram in the large blast furnace overhaul stove (excavator go into furnace bottom after operation).
1. blast furnaces, 2. fire holes, 3. fixed pulleys, 4. swivel chutes, 5. chute access openings, 6. chain blocks, 7. furnace roofs, 8. excavators, 9. windlasss, 10. haulage cables, 11. tuyere platforms, 12. throat platforms, the 13. interim conveyor 14. iron mouth platforms of driving a vehicle among the figure, 15. burner hearth bottoms.
Embodiment
Our company's 2500m3 blast furnace slag skimming method that carries out large repairs, the construction appliance of employing has: 1 in windlass, Φ 19mm, shackle 3t, fixed pulley 2t, 1 in excavator, conveyor 1-2 platform in 2 of chain block 3t, the wireline.
Material method for cleaning in the blast furnace overhaul stove follows these steps to carry out:
1), the black furnace blast furnace stop reinforced after, the beginning black furnace is sprinkled water in stove by air port and cross temperature place, 72 hours black furnace time, the interior temperature of stove is reduced to below 30 ℃;
2), ventilating is provided with 2 typhoon machines, ventilation, cooling;
3), cleaning (opening) chute access opening 5 holes, 2 * 1.8 ㎡, get through handling excavator passage.
2, the lifting break is set and uses conveyor with excavator and deslagging
1), utilize stokehold driving (among the figure mark), furnace roof driving 7, chain block 6 is driven a vehicle with furnace roof and is cooperated utilization;
2), be provided with that haulage gear chute access opening 5 is other establishes reel windlass 9, haulage cable is 3 groups of guiding of four groups of fixed pulleys outside stove, walk around body of heater, pass blast furnace 1 by the fire hole 2 on chute opposite and are back to by the chute access opening;
3) deslagging conveyor 13 is set, belt captain 10m, wide 0.4m place body of heater symmetry air port, by stretching out outside the stove in the stove.
3, the handling excavator 8, send in the stove
1), stokehold driving handling, remove excavator wheel house outer cover, winch to casting house by stokehold driving (among the figure mark), walk to tuyere platform 11 certainly, be parked in furnace roof driving erection opening below;
2), the equipped quartering hammer of excavator, fuselage is vertically concordant with chain belt, the arm beam stretches, and is sealed by chain block;
3), confirm excavator suspending way and sling point; Furnace roof driving gib head is transferred; Establish three wireline on the gib head; Two long wireline are installed on the lifting point of excavator front and back by shackle, and a strap is installed on the arm beam by armed lever, chain block and shackle, with the equilibrium state of chain block adjustment excavator;
4), furnace roof driving handling excavator
Three sling points of excavator are hung in the furnace roof driving, handling to chute access opening below; The adjustment chain block makes the excavator certain angle that leans forward, and fuselage is over against the chute access opening; The windlass haulage cable is held the preceding sling point of fuselage, starts windlass and in stove, draws, and the driving gib head falls slowly, and windlass slowly draws, and is put into till the furnace bottom.
4, scarfing cinder in the stove
1), removal driving gib head, wireline, chain block and haulage cable and with sling point on shackle, assembling wheel house cover, check and adjustment excavator;
2), break starts excavator, quartering hammer to around the furnace wall and the iron of bottom dirt, slag iron carry out fragmentation, be block.The cleaning of layering from top to bottom is until lower edge, air port, iron mouth and furnace chamber bottom;
3), the deslagging excavator bucket that changes the outfit, with iron dirt, the slag iron of bucket, shovel on the conveyor fragmentation, start conveyor have bad luck come out of the stove outside, transport the working-yard then.
5, hang out excavator, take off remove in the furnace accretion bundle, stove clean after, with excavator by handling in the stove to stove, to repair the stove next process.
According to said method take off the stove scarfing cinder, the time shortened to 2 days by original more than 20 days, saved workmen people more than 40, reduced repair expense, and blast furnace was produced in 15 days in advance.
Claims (1)
1. material method for cleaning in the large blast furnace overhaul stove is characterized in that following these steps to carrying out:
1), black furnace
A, stop in stove behind the feed beginning black furnace by the cooling of inwardly sprinkling water of air port and cross temperature place, 60-80 hour black furnace time, the interior temperature of stove is reduced to below 30 ℃;
B, ventilation are provided with 2-3 typhoon machine, ventilate, lower the temperature, and improve operating environment;
C, cleaning chute are repaired hole (5), get through handling excavator passage, the wide 1.5-2m of the high 2-2.5m in hole, and observe furnace roof inwall " extension knurl " situation, prevent to fall in the construction and hurt sb.'s feelings;
2), the broken slag of lifting, deslagging apparatus are set
A, utilize stokehold driving, furnace roof driving (7), chain block (6) is set drives a vehicle with furnace roof and cooperate utilization;
B, haulage gear is set; The other slow reel windlass (9) of establishing of the chute access opening of throat platform (12); The fixed pulley group (3) of haulage cable (10) outside being located at blast furnace walked around body of heater, passes blast furnace (1) by the fire hole (2) with chute access opening opposite and is back to by the chute access opening;
C, deslagging conveyor (13) is set, after blast furnace tuyere small sleeve, middle cover are removed, in the symmetrical air port of blast furnace conveyor is set, by stretching out in the stove outside the stove;
3), handling excavator (8) is to stove
Excavator wheel house outer cover is removed in a, stokehold driving handling, winches to casting house by the stokehold driving, and excavator is parked in furnace roof driving erection opening below from walking to tuyere platform (11);
The equipped quartering hammer of b, excavator, excavator base machine and chain belt are concordant before vertically, and the arm beam stretches, and is secured by chain block, when preventing that fuselage from rotating, locks the generation that does not tightly cause the mass centre changing accident because of hydraulicefficiency system;
C, confirm that excavator suspending way and sling point furnace roof driving gib head hangs three wireline; Two long wireline are connected on the lifting point before and after the excavator; A strap is then hung the digger arm beam by armed lever, chain block; Start the furnace roof driving, with the equilibrium state of chain block adjustment excavator;
D, furnace roof driving handling excavator
Three sling points of excavator are hung in the furnace roof driving, after the adjustment balance, start the furnace roof driving, and excavator is winched to chute access opening top; The adjustment chain block makes the excavator set angle that turns forward, and fuselage is over against the chute access opening; The windlass haulage cable is held the preceding sling point of fuselage, starts windlass and in stove, draws, and the driving gib head falls slowly, and windlass slowly draws, till excavator is put into burner hearth bottom (15);
4), scarfing cinder in the stove
A, removal driving gib head, wireline, chain block and haulage cable, assembling wheel house cover, check and adjustment excavator; After going into operation,, arrange 3-4 name excavator officer Lian Ban operation, guarantee the continuity and the efficient of construction according to the size of furnace volume;
Excavator is started in b, break, and quartering hammer carries out fragmentation to iron dirt, the slag iron that reaches the bottom around the furnace wall, slag charge height 3-5m, and layering is from top to bottom carried out, until lower edge, air port, iron mouth and furnace chamber bottom;
C, the deslagging excavator bucket that changes the outfit with iron dirt, the slag iron of bucket with fragmentation, shovels on the conveyor, start conveyor have bad luck come out of the stove outside, transport the working-yard then;
5), hang out excavator take off remove in the furnace accretion bundle, stove clean after, with excavator by handling in the stove to stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100754245A CN102618677B (en) | 2012-03-21 | 2012-03-21 | Method for cleaning materials in large-scale blast furnace in overhaul |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100754245A CN102618677B (en) | 2012-03-21 | 2012-03-21 | Method for cleaning materials in large-scale blast furnace in overhaul |
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| CN102618677A true CN102618677A (en) | 2012-08-01 |
| CN102618677B CN102618677B (en) | 2013-09-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726625A (en) * | 2015-02-26 | 2015-06-24 | 河北二十冶建设有限公司 | Method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul |
| CN106005936A (en) * | 2016-07-19 | 2016-10-12 | 河北二十冶建设有限公司 | Transferring and furnace-entering device for refractory material and transferring and furnace-entering method for refractory material |
| CN108624730A (en) * | 2018-07-30 | 2018-10-09 | 本钢板材股份有限公司 | Waste material cleaning system and method for cleaning in a kind of large blast furnace overhaul stove |
| CN108642221A (en) * | 2018-08-01 | 2018-10-12 | 本钢板材股份有限公司 | A kind of super-huge blast furnace overhaul quickly takes off furnace system and method |
| CN109735671A (en) * | 2019-02-28 | 2019-05-10 | 上海二十冶建设有限公司 | Three layers of operational method of one are dismounted in the furnace of medium and small blast furnace |
| CN113390462A (en) * | 2021-06-11 | 2021-09-14 | 马鞍山钢铁股份有限公司 | Device for finding blockage and abnormity of foreign matter in skirt cover of stepping furnace |
| CN114317857A (en) * | 2021-12-30 | 2022-04-12 | 鞍钢集团工程技术有限公司 | Blast furnace chute gate with ignition hole and ignition method |
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| CN2537711Y (en) * | 2002-05-05 | 2003-02-26 | 张店钢铁总厂 | Slag clenaing machine |
| KR100851952B1 (en) * | 2002-06-21 | 2008-08-12 | 주식회사 포스코 | Method for early-discharging low-reductive material produced in repairing blast furnace wall |
| CN101688256A (en) * | 2007-08-09 | 2010-03-31 | 新日铁工程技术株式会社 | Ring block conveying apparatus, and remedy method for blast furnace casing |
| CN102134620A (en) * | 2010-10-19 | 2011-07-27 | 新兴铸管股份有限公司 | Blast furnace shaft upper part rapid hot wet method for producing lining |
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2012
- 2012-03-21 CN CN2012100754245A patent/CN102618677B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537711Y (en) * | 2002-05-05 | 2003-02-26 | 张店钢铁总厂 | Slag clenaing machine |
| KR100851952B1 (en) * | 2002-06-21 | 2008-08-12 | 주식회사 포스코 | Method for early-discharging low-reductive material produced in repairing blast furnace wall |
| CN101688256A (en) * | 2007-08-09 | 2010-03-31 | 新日铁工程技术株式会社 | Ring block conveying apparatus, and remedy method for blast furnace casing |
| CN102134620A (en) * | 2010-10-19 | 2011-07-27 | 新兴铸管股份有限公司 | Blast furnace shaft upper part rapid hot wet method for producing lining |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726625A (en) * | 2015-02-26 | 2015-06-24 | 河北二十冶建设有限公司 | Method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul |
| CN104726625B (en) * | 2015-02-26 | 2016-08-17 | 河北二十冶建设有限公司 | Waste material and the method for quickly eliminating of residual ferrum in stove in a kind of blast furnace overhaul |
| CN106005936A (en) * | 2016-07-19 | 2016-10-12 | 河北二十冶建设有限公司 | Transferring and furnace-entering device for refractory material and transferring and furnace-entering method for refractory material |
| CN108624730A (en) * | 2018-07-30 | 2018-10-09 | 本钢板材股份有限公司 | Waste material cleaning system and method for cleaning in a kind of large blast furnace overhaul stove |
| CN108642221A (en) * | 2018-08-01 | 2018-10-12 | 本钢板材股份有限公司 | A kind of super-huge blast furnace overhaul quickly takes off furnace system and method |
| CN109735671A (en) * | 2019-02-28 | 2019-05-10 | 上海二十冶建设有限公司 | Three layers of operational method of one are dismounted in the furnace of medium and small blast furnace |
| CN113390462A (en) * | 2021-06-11 | 2021-09-14 | 马鞍山钢铁股份有限公司 | Device for finding blockage and abnormity of foreign matter in skirt cover of stepping furnace |
| CN113390462B (en) * | 2021-06-11 | 2022-03-22 | 马鞍山钢铁股份有限公司 | Device for finding blockage and abnormity of foreign matter in skirt cover of stepping furnace |
| CN114317857A (en) * | 2021-12-30 | 2022-04-12 | 鞍钢集团工程技术有限公司 | Blast furnace chute gate with ignition hole and ignition method |
| CN114317857B (en) * | 2021-12-30 | 2022-12-20 | 鞍钢集团工程技术有限公司 | Blast furnace chute gate with ignition hole and ignition method |
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| CN102618677B (en) | 2013-09-18 |
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