CN107699650B - 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
CN107699650B
CN107699650B CN201711218926.8A CN201711218926A CN107699650B CN 107699650 B CN107699650 B CN 107699650B CN 201711218926 A CN201711218926 A CN 201711218926A CN 107699650 B CN107699650 B CN 107699650B
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cooling
installation
old
new
water pipe
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CN107699650A (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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    • 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 methods of blast furnace cooling stave, including old cooling wall is removed and the installation of new cooling wall, and old cooling wall dismounting includes the following steps: that furnace roof opens big square hole, reequip to distributor chute;Old cooling wall outer connector is removed;The setting of hoist engine;Old cooling wall water pipe reeves;Erecting and welding is used to eject the gate stand of old cooling wall;Jack ejects cooling wall;Center slider gib head is hung;Center slider and hoist engine cooperate, and old cooling wall is hung out from big square hole;Cleaning;New cooling wall installation includes the following steps: the hot face setting suspension centre of new cooling wall and sprays to hot face;New cooling wall water pipe reeves;New cooling wall water pipe is drawn cable wire end to connect with hoist engine rope end, is coupled dropping place using two hoist engines and center slider;Adjust new cooling wall mounting technique parameter;Cooling wall is fixed, and installation is completed.Present invention reduces maintenance durations, reduce costs, and resume production to blast furnace and provide advantage.

Description

A kind of installation method of blast furnace cooling stave
Technical field
The present invention relates to a kind of installation methods of blast furnace cooling stave, and in particular to one kind be applied to annual overhaul or in repair Shi Genghuan The installation method of a small amount of cooling wall, belongs to blast-furnace technique field.
Background technique
Blast furnace cooling stave is the key equipment for avoiding furnace skin from being 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, and individual cooling walls often premature deterioration loses 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 be carried out to blast furnace Personnel enter in furnace, set up movable hanging scaffold, carry out local replacing to cooling wall, then dig cupola well and restore blast fumance.
The local replacing of cooling wall may be implemented in this technology, but the time between overhauls(TBO) is long, higher cost, and blast furnace throws Recovery It is relatively slow.
The Chinese invention patent of Publication No. CN 107779533A discloses a kind of installation method of blast furnace cooling stave, In pass through in furnace shell be arranged circular orbit beam and on circular orbit beam be arranged overhead electric cucurbit;In furnace shell lower inner wall Simultaneously auxiliary electric cucurbit is arranged in setting upper layer and lower layer Shackle assembly;Operating platform is set up in furnace body;It will by the main loop wheel machine of blast furnace Cooling wall is hung in furnace body;Cooling wall is taken over overhead electric cucurbit;Cooling wall is hoisted to designated position, by adjusting auxiliary Electric block will gradually shift to furnace shell inner wall by the cooling wall of overhead electric cucurbit hanging holding;By the cooling wall from operating platform It installs.
This method needs that furnace roof is ring-like hangs in the setting of blast furnace gas sealing cover position, and cooling wall is hung to furnace using main crane After interior, installed, needed using special specific large scale equipment by electric block by ring-like hang of furnace roof, have it is at high cost, Problem complicated for operation.
Summary of the invention
The present invention overcomes the defects of the prior art, provide a kind of installation method of blast furnace cooling stave, may be implemented to utilize Blast furnace annual overhaul chance (general 5-6 days time) carries out local replacing to cooling wall.
The present invention is implemented as follows:
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 dismounting includes the following steps:
(1), furnace roof opens big square hole, removes valve box and central throat tube, reequips to distributor chute, on distributor chute Portion's installation changed course pulley, in distributor chute lower part, installation fixed pulley installs main tackle pulley using batch can as main suspension centre;
(2), old cooling wall outer connector is removed, by the water pipe gold for the upper and lower section cooling wall being connect with the old cooling wall Belong to hose connection, it is ensured that upper and lower section cooling wall water flow is unimpeded, protects the cooling wall being changed without;Old cooling wall seal closure is cut, is revealed Cooling wall copper pipe and it is cut to appropriate length out, to facilitate very heavy ejecting force as principle;
(3), the setting of hoist engine, is arranged 1#, 2# hoist engine platform locating for lower nozzle on old cooling wall, and furnace roof center is sliding The hoist engine of son is set to the big square hole platform of furnace roof, and the rope end of 1# and 2# hoist engine is respectively led into and lower nozzle water on old cooling wall Flat parallel position;
(4), old cooling wall water pipe reeves;Make draught line for two coolings among steel wire penetrating cooling wall with iron wire Water pipe, and fixed wirerope and cooling water pipe nozzle with taper holding clamp, prevent steel cable sliding;Then by 1# hoist engine It is connected respectively with the wirerope of upper and lower ends with the rope end of 2# hoist engine, and slightly stress;
(5), erecting and welding is used to eject the gate stand of old cooling wall, and installation site is diagonal two coolings of old cooling wall Outside water pipe hole;
(6), old cooling wall bolt is dismantled, two jack are installed respectively on gate stand, pushes up loose cooling wall, simultaneously The cooperation of 1#, 2# hoist engine gradually ejects cooling wall, and cooling wall is ejected;
(7), center slider gib head is hung;Center slider is fallen to height is replaced, is turned eave tile using distributor chute rotation To replacement cooling wall direction, center slider is hooked into the sling of cooling wall with iron hook, crawl center slider makes gib head stress;
(8), center slider and 1#, 2# hoist engine cooperate, and old cooling wall are hung out from big square hole, at this time 1#, 2# hoist engine Rope end, which synchronizes, rises to big square hole platform;
(9), grouting material around the old cooling wall that cleaning is removed and its on the inside of furnace shell, stretches from cooling wall of furnace shell water pipe hole Enter, cleaned out grouting material with scoop, chisel, is ready to install new cooling wall;
New cooling wall installation includes the following steps:
(1), before new cooling wall being installed, in the hot face setting suspension centre of new cooling wall and hot face is sprayed, while will replace The sealing plate of filler is installed in place;
(2), new cooling wall water pipe reeves;Make draught line for two water among the new cooling wall of steel wire penetrating with iron wire Pipe, and fixed wirerope and cooling wall water pipe nozzle with taper holding clamp, prevent steel cable sliding;
(3), new cooling wall water pipe is drawn cable wire end to connect with 1#, 2# hoist engine rope end in advance, with furnace roof crane New cooling wall is hung to big square hole and is switched to the slider of center, center slider gib head is hung on the hot face lifting lug of new cooling wall repacking On;
(4), new cooling wall is slowly drop to installation place using two hoist engines and the cooperation of center slider, utilizes 1#, 2# Hoist engine is by new cooling wall stress dropping place;
(5), the new cooling wall of adjustment installs every technical parameter, including the new cooling wall of adjustment with adjacent cooling wall gap and newly The cooling water pipe of cooling wall and furnace shell gap;
(6), cooling wall is fixed, and after adjusting gap, fastening bolt is in the milk from furnace skin external apertures, completes cooling wall Installation is realized whole unmanned into operation in furnace.
Further scheme is:
One end of the taper holding clamp is filled in cooling water pipe and is fixed, and has one to run through among taper holding clamp The aperture of wirerope, after steel wire penetrating aperture, taper holding clamp is compressed wirerope by filling in one end of cooling water pipe And 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 crane.
Further scheme is:
It adjusts cooling wall and adjacent cooling wall gap is 20mm ± 5mm, cooling water pipe and furnace shell gap are greater than 8mm.
Further scheme is:
The pretightning force of the fastening bolt is 400Nm.
For safety operation, before replacing cooling wall, needs for stockline to be down to and need replacing the lower along 0.5 meter of cooling wall Place, pressure grain slag control in-furnace temperature, and installation burning torch lights charge level coal gas to control gas content.
The application is by reequiping distributor chute, it is ensured that the closer cooling wall needed replacing of center slider lifting rope. 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 dedicated taper fixture of work Locking stylet rope.Production cooling wall joint measurement cover board replaces original hand-stuff, it is ensured that grouting material It does not leak.
The present invention may be implemented to carry out local replacing to damage cooling wall under the premise of blast furnace not stockline dropping blowing out.Shorten Maintenance duration, reduces costs, while resuming production to blast furnace and providing advantageous condition.
Detailed description of the invention
Lifting schematic diagram in Fig. 1 furnace;
The old fixed figure of cooling wall lifting wirerope of Fig. 2;
The old cooling wall of Fig. 3 removes schematic diagram;
The new cooling wall scheme of installation of Fig. 4.
It wherein, is gate stand partial enlargement diagram at A in Fig. 2;Illustrate at B for taper holding clamp partial enlargement Figure.
Specific embodiment
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
A kind of installation method of blast furnace cooling stave, comprising:
1, old cooling wall is removed
(1), as shown in Fig. 1, furnace roof opens big square hole 6, removes valve box and central throat tube, retains gear-box 2 and does not remove, After being reequiped to distributor chute 3, changed course pulley 4 is installed on 3 top of distributor chute, fixed pulley 5 is installed in distributor chute lower part, Using batch can 1 as main suspension centre, main tackle pulley 16 is installed.
(2), old cooling wall outer connector is removed, the upper and lower section cooling wall water pipe metal connecting with the cooling wall is soft Pipe connection, it is ensured that lower section cooling wall water flow is unimpeded, protects the cooling wall being changed without.Cut old cooling wall seal closure, exposing it is cold But wall copper pipe and it is cut to appropriate length, to facilitate very heavy ejecting force as principle.
In the present embodiment, it is specifically described for replacing the old cooling wall above the 6th section of cooling wall.
(3), 1# hoist engine 7, the platform locating for lower nozzle on old cooling wall of 2# hoist engine 8, furnace is arranged in the setting of hoist engine The hoist engine of top center slider 9 is set to the big square hole platform of furnace roof, the rope end of 1# hoist engine 7 and 2# hoist engine 8 be respectively led into Lower nozzle horizontal parallel position on old cooling wall.
(4), old cooling wall water pipe reeves.Make draught line with iron wire and wirerope 12 is passed through among old cooling wall two Cooling water pipe 13, and fixed wirerope 12 and 13 nozzle of cooling water pipe with the taper holding clamp 11 specially processed, prevent steel Cord slides (enlarged drawing at such as B of attached drawing 2).Then by the rope end of 1# hoist engine 7 and 2# hoist engine 8 respectively with upper and lower ends Wirerope is connected, and slightly stress.
(5), the gate stand 14 of the old cooling wall in erecting and welding top, gate stand use I-steel I16, and installation site is pair Outside the cooling water pore of two, angle.Specifically as shown in enlarged drawing at A in attached drawing 2.
(6), old cooling wall bolt is dismantled, two 50t jack 15 are installed respectively on gate stand 14, the old cooling of top pine Wall, while the cooperation of 1#, 2# hoist engine gradually ejects cooling wall, ejects position as shown in Fig. 3 to old cooling wall.
(7), center slider gib head is hung.As shown in Fig. 3, center slider 9 is fallen to replacement height, utilizes distributor chute Eave tile is gone to replacement cooling wall direction by 3 rotations, is hooked into the sling of cooling wall with iron hook, crawl center slider makes hook Head stress.
(8), center slider and 1#, 2# hoist engine cooperate, and old cooling wall are hung out from big square hole, at this time 1#, 2# hoist engine Rope end, which synchronizes, rises to big square hole platform.
(9), grouting material around the cooling wall that cleaning is removed and its on the inside of furnace shell, is protruded into from cooling wall of furnace shell water pipe hole, Grouting material is cleaned out with scoop, chisel, is ready to install new cooling wall.
2, new cooling wall is installed
(1), before cooling wall being installed, in the hot face setting suspension centre of new cooling wall and hot face is sprayed, filler will be replaced Sealing plate is installed in place.
(2), new cooling wall water pipe reeves.Make draught line for two water among the new cooling wall of steel wire penetrating with iron wire Pipe, and fixed wirerope and new cooling wall water pipe nozzle with the taper holding clamp specially processed, prevent steel cable sliding.
(3), cooling wall water pipe is drawn cable wire end to connect with 1#, 2# hoist engine rope end in advance, with furnace roof 65T crane New cooling wall is hung to big square hole and is switched to the slider of center, the hot face that slider 9 gib head in center is hung on new cooling wall repacking is hung On ear 17, as shown in Fig. 4.
(4), new cooling wall is slowly drop to installation place using two hoist engines and the cooperation of center slider, utilizes 1#, 2# Hoist engine is by cooling wall stress dropping place.
(5), each technical parameter of cooling wall, cooling wall and adjacent cooling wall gap (20mm ± 5), cooling water pipe and furnace are adjusted Shell gap (is greater than 8mm).
(6), cooling wall is fixed, after adjusting gap, fastening bolt, and pretightning force 400Nm.It is filled from furnace skin external apertures Slurry completes the installation of cooling wall, realizes whole unmanned into operation in furnace.
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, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art Member can be designed that a lot of other modification and implementations, these modifications and implementations 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 dismounting includes the following steps:
(1), furnace roof opens big square hole, removes valve box and central throat tube, reequips to distributor chute, pacifies on distributor chute top Dress changed course pulley, in distributor chute lower part, installation fixed pulley installs main tackle pulley using batch can as main suspension centre;
(2), old cooling wall outer connector is removed, the water pipe metal for the upper and lower section cooling wall connecting with the old cooling wall is soft Pipe connection, it is ensured that upper and lower section cooling wall water flow is unimpeded, protects the cooling wall being changed without;Old cooling wall seal closure is cut, is exposed cold But wall copper pipe and it is cut to appropriate length, to facilitate very heavy ejecting force as principle;
(3), 1#, 2# hoist engine platform locating for lower nozzle on old cooling wall is arranged in the setting of hoist engine, furnace roof center slider Hoist engine is set to the big square hole platform of furnace roof, and the rope end of 1# and 2# hoist engine is respectively led into flat with lower nozzle level on old cooling wall Line position is set;
(4), old cooling wall water pipe reeves;Make draught line for two cooling waters among steel wire penetrating cooling wall with iron wire Pipe, and fixed wirerope and cooling water pipe nozzle with taper holding clamp, prevent steel cable sliding;Then by 1# hoist engine and The rope end of 2# hoist engine is connected with the wirerope of upper and lower ends respectively, and slightly stress;
(5), erecting and welding is used to eject the gate stand of old cooling wall, and installation site is diagonal two cooling water pipes of old cooling wall Outside hole;
(6), old cooling wall bolt is dismantled, two jack are installed respectively on gate stand, pushes up loose cooling wall, while 1#, 2# Hoist engine cooperation gradually ejects cooling wall, and cooling wall is ejected;
(7), center slider gib head is hung;Center slider is fallen to height is replaced, is rotated using distributor chute and goes to eave tile more Cooling wall direction is changed, center slider is hooked into the sling of cooling wall with iron hook, crawl center slider makes gib head stress;
(8), center slider and 1#, 2# hoist engine cooperate, and old cooling wall are hung out from big square hole, at this time 1#, 2# hoist engine rope end It synchronizes and rises to big square hole platform;
(9), grouting material around the old cooling wall that cleaning is removed and its on the inside of furnace shell, protrudes into from cooling wall of furnace shell water pipe hole, uses Scoop, chisel clean out grouting material, are ready to install new cooling wall;
New cooling wall installation includes the following steps:
(1), before new cooling wall being installed, in the hot face setting suspension centre of new cooling wall and hot face is sprayed, while filler will be replaced Sealing plate be installed in place;
(2), new cooling wall water pipe reeves;Make draught line for two water pipes among the new cooling wall of steel wire penetrating with iron wire, And fixed wirerope and cooling wall water pipe nozzle with taper holding clamp, prevent steel cable sliding;
(3), new cooling wall water pipe cable wire end is drawn to connect with 1#, 2# hoist engine rope end in advance, it will be new with furnace roof crane Cooling wall is hung to big square hole and switches to the slider of center, and center slider gib head is hung on the hot face lifting lug of new cooling wall repacking;
(4), new cooling wall is slowly drop to installation place using two hoist engines and the cooperation of center slider, utilizes 1#, 2# elevator Machine pulls new cooling wall and installs dropping place;
(5), the new every technical parameter of cooling wall installation, including the new cooling wall of adjustment and adjacent cooling wall gap and new cooling are adjusted The cooling water pipe of wall and furnace shell gap;
(6), cooling wall is fixed;
After adjusting gap, fastening bolt is in the milk from furnace skin external apertures, completes the installation of cooling wall, realize it is whole nobody into Enter operation in furnace.
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 is fixed, and has one to run through steel wire among taper holding clamp The aperture of rope, after steel wire penetrating aperture, wirerope is compressed and is 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 crane.
6. the installation method of blast furnace cooling stave according to claim 1, it is characterised in that:
It adjusts cooling wall and adjacent cooling wall gap is 20mm ± 5mm, cooling water pipe and furnace shell gap are greater than 8mm.
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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Families Citing this family (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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57444B2 (en) * 1975-07-11 1982-01-06
JPS5877511A (en) * 1981-10-31 1983-05-10 Nippon Steel Corp Stripping and removing method for stave of blast furnace
JP4751238B2 (en) * 2006-05-17 2011-08-17 新日本製鐵株式会社 Stave cooler for blast furnace
CN102912051B (en) * 2012-10-26 2015-05-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN103266192B (en) * 2013-05-17 2015-01-21 中国十七冶集团有限公司 Hoisting method for replacing cooling wall in overhauling of blast furnace
CN103484587B (en) * 2013-09-30 2015-01-07 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN105420432B (en) * 2015-12-04 2017-08-25 山东钢铁股份有限公司 A kind of replacing options of blast furnace cooling stave
CN106086263B (en) * 2016-08-04 2018-04-13 河北钢铁股份有限公司承德分公司 A kind of collaboration hanging method of blast furnace cooling stave

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