CN107699650A - A kind of installation method of blast furnace cooling stave - Google Patents

A kind of installation method of blast furnace cooling stave Download PDF

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Publication number
CN107699650A
CN107699650A CN201711218926.8A CN201711218926A CN107699650A CN 107699650 A CN107699650 A CN 107699650A CN 201711218926 A CN201711218926 A CN 201711218926A CN 107699650 A CN107699650 A CN 107699650A
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China
Prior art keywords
cooling
installation
old
new
water pipe
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CN201711218926.8A
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Chinese (zh)
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CN107699650B (en
Inventor
陈建平
张玉奎
姜本熹
郑华伟
曾诚
张正东
谢友阳
力飞
李昕
罗朋飞
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Wuhan Iron and Steel Co Ltd
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Wuhan Iron and Steel Co Ltd
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Priority to CN201711218926.8A priority Critical patent/CN107699650B/en
Publication of CN107699650A publication Critical patent/CN107699650A/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/10Cooling; Devices therefor
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B5/00Making pig-iron in the blast furnace

Abstract

The invention discloses a kind of installation method of blast furnace cooling stave, including old cooling wall is removed and the installation of new cooling wall, and old cooling wall, which is removed, to be comprised the following steps:Furnace roof opens big square hole, and distributor chute is reequiped;Connecting leg outside old cooling wall is removed;The setting of hoist engine;Old cooling wall water pipe reeves;Erecting and welding is used for the gate stand for ejecting old cooling wall;Jack ejects cooling wall;Center slider gib head is hung;Center slider coordinates with hoist engine, and old cooling wall is hung out from big square hole;Cleaning;New cooling wall installation comprises the following steps:The new hot face of cooling wall sets suspension centre and hot face is sprayed;New cooling wall water pipe reeves;New cooling wall water pipe extraction cable wire end is connected with hoist engine fag end, coordinates installation dropping place using two hoist engines and center slider;Adjust new cooling wall mounting technique parameter;Cooling wall is fixed, and completes installation.Present invention reduces maintenance duration, reduces cost, and blast furnace is resumed production and provides advantage.

Description

A kind of installation method of blast furnace cooling stave
Technical field
The present invention relates to a kind of installation method of blast furnace cooling stave, and in particular to one kind be applied to annual overhaul or in change when repairing The installation method of a small amount of cooling wall, belongs to blast-furnace technique field.
Background technology
Blast furnace cooling stave is to avoid the key equipment that stove skin is impacted by blast furnace heat load during blast fumance is smelted.Once peace Dress, need to use generation furnace life, but by high temperature erosion and the erosive wear of furnace charge, indivedual cooling walls often premature deterioration, lose Cooling effect, influences that blast furnace is normal, safety in production.
Faced with this situation, it is common practice to using the chance of intermediate repair, stockline dropping blowing out, maintenance are carried out to blast furnace Personnel enter in stove, set up movable hanging scaffold, and local replacing is carried out to cooling wall, then dig cupola well and recover blast fumance.
This technology can realize the local replacing of cooling wall, but the time between overhauls(TBO) is grown, and cost is higher, and blast furnace throws Recovery It is slower.
The content of the invention
Instant invention overcomes the defects of prior art, there is provided a kind of installation method of blast furnace cooling stave, it is possible to achieve utilizes Blast furnace annual overhaul chance(The general 5-6 days time)Local replacing is carried out to cooling wall.
What the present invention was realized in:
A kind of installation method of blast furnace cooling stave, including old cooling wall is removed and the installation of new cooling wall,
Old cooling wall, which is removed, to be comprised the following steps:
(1), furnace roof open big square hole, remove valve box and central throat tube, distributor chute reequiped, pacify on distributor chute top Dress changed course pulley, installs fixed pulley in distributor chute bottom, by the use of batch can as main suspension centre, installs main tackle pulley;
(2), connecting leg outside old cooling wall removed, the water pipe metal for upper and lower section of cooling wall being connected with the old cooling wall is soft Pipe connects, it is ensured that upper and lower section of cooling wall current are unimpeded, protect the cooling wall being changed without;Old cooling wall seal closure is cut, is exposed cold But wall copper pipe and appropriate length is cut to, to facilitate very heavy ejecting force as principle;
(3), hoist engine setting, 1#, 2# hoist engine are set in platform residing for lower nozzle on old cooling wall, furnace roof center slider Hoist engine is arranged at the big square hole platform of furnace roof, and the fag end of 1# and 2# hoist engines is respectively led into puts down with lower nozzle level on old cooling wall Line position is put;
(4), old cooling wall water pipe reeves;Make draught line by two cooling waters among steel wire penetrating cooling wall with iron wire Pipe, and fixed steel wire rope and the cooling water pipe mouth of pipe with taper holding clamp, prevent steel cable sliding;Then by 1# hoist engines and The fag end of 2# hoist engines is connected with the steel wire rope of upper and lower ends respectively, and somewhat stress;
(5), erecting and welding be used to eject the gate stand of old cooling wall, installation site is diagonal two cooling water pipes of old cooling wall Outside hole;
(6), the old cooling wall bolt of dismounting, two jack are installed respectively on gate stand, push up loose cooling wall, while 1#, 2# Hoist engine coordinates gradually ejection cooling wall, and cooling wall is ejected;
(7), center slider gib head hangs;Fall center slider to height is changed, rotated using distributor chute and go to eave tile more Cooling wall direction is changed, center slider is hooked into the sling of cooling wall with cleek, crawl center slider, makes gib head stress;
(8), center slider and 1#, 2# hoist engine coordinate, old cooling wall is hung out from big square hole, now 1#, 2# hoist engine fag end Synchronously rise to big square hole platform;
(9), cleaning remove old cooling wall around and its furnace shell on the inside of grouting material, stretched at cooling wall of furnace shell water pipe hole, use Scoop, chisel clean out grouting material, are ready to install new cooling wall;
New cooling wall installation comprises the following steps:
(1), before the new cooling wall of installation, suspension centre is set in new cooling wall hot face and hot face is sprayed, while filler will be substituted Sealing plate be installed in place;
(2), new cooling wall water pipe reeves;Make draught line by two water pipes among the new cooling wall of steel wire penetrating with iron wire, And fixed steel wire rope and the cooling wall water pipe mouth of pipe with taper holding clamp, prevent steel cable sliding;
(3), new cooling wall water pipe is drawn into cable wire end be connected in advance with 1#, 2# hoist engine fag end, will be newly with furnace roof crane Cooling wall is hung to big square hole and switched to the slider of center, and center slider gib head is hung on the hot face hanger of new cooling wall repacking;
(4), coordinated using two hoist engines and center slider new cooling wall slowly drop to installation place, utilize 1#, 2# elevator Machine is by new cooling wall stress dropping place;
(5), the new cooling wall of adjustment every technical parameter, including the new cooling wall of adjustment and adjacent cooling wall gap and new cooling are installed The cooling water pipe of wall and furnace shell gap;
(6), cooling wall fix, after adjusting gap, fastening bolt, from stove skin external apertures be in the milk, complete the installation of cooling wall, Realize that whole process is unmanned to operate into stove is interior.
Further scheme is:
One end of the taper holding clamp is filled in cooling water pipe and fixed, and has one to run through steel wire among taper holding clamp The aperture of rope, after steel wire penetrating aperture, steel wire rope is compressed and consolidated by filling in one end of cooling water pipe by taper holding clamp It is fixed.
Further scheme is:
The gate stand uses I-steel I16.
Further scheme is:
Two jack installed on the gate stand are 50t jack.
Further scheme is:
The furnace roof crane is 65T cranes.
Further scheme is:
Adjustment cooling wall is 20mm ± 5mm with adjacent cooling wall gap, and cooling water pipe is more than 8mm with furnace shell gap.
Further scheme is:
The pretightning force of the fastening bolt is 400Nm.
For safety operation, it is necessary to which stockline, which is down to, to be needed to change the lower along 0.5 meter of cooling wall before cooling wall is changed Place, pressure grain slag control in-furnace temperature, installation burning torch are lighted charge level coal gas to control gas content.
The application to distributor chute by reequiping, it is ensured that the cooling wall that center slider lifting rope is changed closer to needs. Cooling wall suspension centre is reequiped, the hot face of cooling wall is changed to by original upper side, and do not influence the spraying of hot face refractory matter.Add The special taper fixture of work Locking stylet rope.Make cooling wall joint measurement cover plate and substitute original hand-stuff, it is ensured that grouting material Do not leak.
The present invention can realize carries out local replacing on the premise of blast furnace not stockline dropping blowing out to damage cooling wall.Shorten Maintenance duration, cost is reduced, while blast furnace is resumed production favourable condition is provided.
Brief description of the drawings
Lifting schematic diagram in Fig. 1 stoves;
The old cooling wall lifting steel wire ropes of Fig. 2 fix figure;
The old cooling walls of Fig. 3 remove schematic diagram;
The new cooling wall scheme of installations of Fig. 4.
Wherein, in Fig. 2 at A it is gate stand close-up schematic view;Illustrate at B for taper holding clamp partial enlargement Figure.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
A kind of installation method of blast furnace cooling stave, including:
1st, old cooling wall is removed
(1), as shown in Figure 1, furnace roof opens big square hole 6, removes valve box and central throat tube, retains gear-box 2 and does not remove, to cloth After material chute 3 is reequiped, changed course pulley 4 is installed on the top of distributor chute 3, fixed pulley 5 is installed in distributor chute bottom, utilized Batch can 1 is used as main suspension centre, installs main tackle pulley 16.
(2), connecting leg outside old cooling wall removed, upper and lower section of cooling wall water pipe metal being connected with the cooling wall is soft Pipe connects, it is ensured that hypomere cooling wall current are unimpeded, protect the cooling wall being changed without.Old cooling wall seal closure is cut, that exposes is cold But wall copper pipe and appropriate length is cut to, to facilitate very heavy ejecting force as principle.
In the present embodiment, it is specifically described exemplified by changing the old cooling wall above the 6th section of cooling wall.
(3), hoist engine setting, 1# hoist engines 7,2# hoist engines 8 are set in platform, stove residing for lower nozzle on old cooling wall The hoist engine of top center slider 9 is arranged at the big square hole platform of furnace roof, the fag end of 1# hoist engines 7 and 2# hoist engines 8 be respectively led into Lower nozzle horizontal parallel position on old cooling wall.
(4), old cooling wall water pipe reeves.Make draught line by steel wire rope 12 through two among old cooling wall with iron wire Cooling water pipe 13, and fixed steel wire rope 12 and the mouth of pipe of cooling water pipe 13 with the taper holding clamp 11 specially processed, prevent steel Cord is slided(As accompanying drawing 2 B at enlarged drawing).Then by the fag end of 1# hoist engines 7 and 2# hoist engines 8 respectively with upper and lower ends Steel wire rope is connected, and somewhat stress.
(5), the old cooling wall in erecting and welding top gate stand 14, gate stand uses I-steel I16, and installation site is Outside diagonal two cooling water pores.Specifically as shown in enlarged drawing at A in accompanying drawing 2.
(6), the old cooling wall bolt of dismounting, two 50t jack 15 are installed respectively on gate stand 14, the old cooling of top pine Wall, while 1#, 2# hoist engine coordinate gradually ejection cooling wall, treat old cooling wall ejection position as shown in Figure 3.
(7), center slider gib head hangs.As shown in Figure 3, fall center slider 9 to height is changed, utilize distributor chute 3 rotations, which go to eave tile, changes cooling wall direction, is hooked into cleek in the sling of cooling wall, crawl center slider, makes hook Head stress.
(8), center slider and 1#, 2# hoist engine coordinate, old cooling wall is hung out from big square hole, now 1#, 2# hoist engine Fag end synchronously rises to big square hole platform.
(9), cleaning remove cooling wall around and its furnace shell on the inside of grouting material, stretched at cooling wall of furnace shell water pipe hole, Grouting material is cleaned out with scoop, chisel, is ready to install new cooling wall.
The 2nd, new cooling wall is installed
(1), before installation cooling wall, suspension centre is set in the hot face of new cooling wall and hot face is sprayed, the sealing of filler will be substituted Plate is installed in place.
(2), new cooling wall water pipe reeves.Make draught line by two water among the new cooling wall of steel wire penetrating with iron wire Pipe, and fixed steel wire rope and the new cooling wall water pipe mouth of pipe with the taper holding clamp specially processed, prevent steel cable sliding.
(3), cooling wall water pipe drawn into cable wire end be connected in advance with 1#, 2# hoist engine fag end, with furnace roof 65T cranes New cooling wall is hung to big square hole and switched to the slider of center, the hot face that the gib head of center slider 9 is hung on new cooling wall repacking is hung On ear 17, as shown in Figure 4.
(4), coordinated using two hoist engines and center slider new cooling wall slowly drop to installation place, utilize 1#, 2# Hoist engine is by cooling wall stress dropping place.
(5), adjustment each technical parameter of cooling wall, cooling wall and adjacent cooling wall gap(20mm±5), cooling water pipe and stove Shell gap(More than 8mm).
(6), cooling wall fix, after adjusting gap, fastening bolt, pretightning force 400Nm.Filled from stove skin external apertures Slurry, completes the installation of cooling wall, and realization is whole unmanned into operation in stove.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application Within scope and spirit.

Claims (7)

1. a kind of installation method of blast furnace cooling stave, including old cooling wall is removed and the installation of new cooling wall, it is characterised in that:
Old cooling wall, which is removed, to be comprised the following steps:
(1), furnace roof open big square hole, remove valve box and central throat tube, distributor chute reequiped, pacify on distributor chute top Dress changed course pulley, installs fixed pulley in distributor chute bottom, by the use of batch can as main suspension centre, installs main tackle pulley;
(2), connecting leg outside old cooling wall removed, the water pipe metal for upper and lower section of cooling wall being connected with the old cooling wall is soft Pipe connects, it is ensured that upper and lower section of cooling wall current are unimpeded, protect the cooling wall being changed without;Old cooling wall seal closure is cut, is exposed cold But wall copper pipe and appropriate length is cut to, to facilitate very heavy ejecting force as principle;
(3), hoist engine setting, 1#, 2# hoist engine are set in platform residing for lower nozzle on old cooling wall, furnace roof center slider Hoist engine is arranged at the big square hole platform of furnace roof, and the fag end of 1# and 2# hoist engines is respectively led into puts down with lower nozzle level on old cooling wall Line position is put;
(4), old cooling wall water pipe reeves;Make draught line by two cooling waters among steel wire penetrating cooling wall with iron wire Pipe, and fixed steel wire rope and the cooling water pipe mouth of pipe with taper holding clamp, prevent steel cable sliding;Then by 1# hoist engines and The fag end of 2# hoist engines is connected with the steel wire rope of upper and lower ends respectively, and somewhat stress;
(5), erecting and welding be used to eject the gate stand of old cooling wall, installation site is diagonal two cooling water pipes of old cooling wall Outside hole;
(6), the old cooling wall bolt of dismounting, two jack are installed respectively on gate stand, push up loose cooling wall, while 1#, 2# Hoist engine coordinates gradually ejection cooling wall, and cooling wall is ejected;
(7), center slider gib head hangs;Fall center slider to height is changed, rotated using distributor chute and go to eave tile more Cooling wall direction is changed, center slider is hooked into the sling of cooling wall with cleek, crawl center slider, makes gib head stress;
(8), center slider and 1#, 2# hoist engine coordinate, old cooling wall is hung out from big square hole, now 1#, 2# hoist engine fag end Synchronously rise to big square hole platform;
(9), cleaning remove old cooling wall around and its furnace shell on the inside of grouting material, stretched at cooling wall of furnace shell water pipe hole, use Scoop, chisel clean out grouting material, are ready to install new cooling wall;
New cooling wall installation comprises the following steps:
(1), before the new cooling wall of installation, suspension centre is set in new cooling wall hot face and hot face is sprayed, while filler will be substituted Sealing plate be installed in place;
(2), new cooling wall water pipe reeves;Make draught line by two water pipes among the new cooling wall of steel wire penetrating with iron wire, And fixed steel wire rope and the cooling wall water pipe mouth of pipe with taper holding clamp, prevent steel cable sliding;
(3), new cooling wall water pipe is drawn into cable wire end be connected in advance with 1#, 2# hoist engine fag end, will be newly with furnace roof crane Cooling wall is hung to big square hole and switched to the slider of center, and center slider gib head is hung on the hot face hanger of new cooling wall repacking;
(4), coordinated using two hoist engines and center slider new cooling wall slowly drop to installation place, utilize 1#, 2# elevator Machine pulls new cooling wall installation dropping place;
(5), the new cooling wall of adjustment every technical parameter, including the new cooling wall of adjustment and adjacent cooling wall gap and new cooling are installed The cooling water pipe of wall and furnace shell gap;
(6), cooling wall fixes;
After adjusting gap, fastening bolt, it is in the milk from stove skin external apertures, completes the installation of cooling wall, realizing whole process, nobody enters Enter in stove and operate.
2. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
One end of the taper holding clamp is filled in cooling water pipe and fixed, and has one to run through steel wire among taper holding clamp The aperture of rope, after steel wire penetrating aperture, steel wire rope is compressed and consolidated by filling in one end of cooling water pipe by taper holding clamp It is fixed.
3. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
The gate stand uses I-steel I16.
4. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
Two jack installed on the gate stand are 50t jack.
5. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
The furnace roof crane is 65T cranes.
6. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
Adjustment cooling wall is 20mm ± 5mm with adjacent cooling wall gap, and cooling water pipe is more than 8mm with furnace shell gap.
7. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
The pretightning force of the fastening bolt is 400Nm.
CN201711218926.8A 2017-11-28 2017-11-28 A kind of installation method of blast furnace cooling stave Active CN107699650B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109722497A (en) * 2018-10-30 2019-05-07 上海宝冶冶金工程有限公司 A kind of blast furnace repairs construction method in changing in short term

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528882A (en) * 1975-07-11 1977-01-24 Nippon Steel Corp Machine cooler damage detector unit
JPS5877511A (en) * 1981-10-31 1983-05-10 Nippon Steel Corp Stripping and removing method for stave of blast furnace
JP2007308747A (en) * 2006-05-17 2007-11-29 Nippon Steel Corp Stave cooler for blast furnace
CN102912051A (en) * 2012-10-26 2013-02-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN103266192A (en) * 2013-05-17 2013-08-28 中国十七冶集团有限公司 Hoisting method for replacing cooling wall in overhauling of blast furnace
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN105420432A (en) * 2015-12-04 2016-03-23 山东钢铁股份有限公司 Replacing method for cooling wall of blast furnace
CN106086263A (en) * 2016-08-04 2016-11-09 河北钢铁股份有限公司承德分公司 A kind of collaborative hanging method of blast furnace cooling stave

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528882A (en) * 1975-07-11 1977-01-24 Nippon Steel Corp Machine cooler damage detector unit
JPS5877511A (en) * 1981-10-31 1983-05-10 Nippon Steel Corp Stripping and removing method for stave of blast furnace
JP2007308747A (en) * 2006-05-17 2007-11-29 Nippon Steel Corp Stave cooler for blast furnace
CN102912051A (en) * 2012-10-26 2013-02-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN103266192A (en) * 2013-05-17 2013-08-28 中国十七冶集团有限公司 Hoisting method for replacing cooling wall in overhauling of blast furnace
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN105420432A (en) * 2015-12-04 2016-03-23 山东钢铁股份有限公司 Replacing method for cooling wall of blast furnace
CN106086263A (en) * 2016-08-04 2016-11-09 河北钢铁股份有限公司承德分公司 A kind of collaborative hanging method of blast furnace cooling stave

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109722497A (en) * 2018-10-30 2019-05-07 上海宝冶冶金工程有限公司 A kind of blast furnace repairs construction method in changing in short term

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