CN106435087B - A kind of converter vaporization flue piecewise combination installation method - Google Patents

A kind of converter vaporization flue piecewise combination installation method Download PDF

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Publication number
CN106435087B
CN106435087B CN201610744276.XA CN201610744276A CN106435087B CN 106435087 B CN106435087 B CN 106435087B CN 201610744276 A CN201610744276 A CN 201610744276A CN 106435087 B CN106435087 B CN 106435087B
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China
Prior art keywords
oblique
flue
lifting
assembly
crane
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CN201610744276.XA
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Chinese (zh)
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CN106435087A (en
Inventor
孔炯
周金龙
施光涛
金仁才
徐峥
翁勇荣
汪柱兵
琚志海
王国军
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中国十七冶集团有限公司
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Publication of CN106435087A publication Critical patent/CN106435087A/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/38Removal of waste gases or dust
    • C21C5/40Offtakes or separating apparatus for converter waste gases or dust
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/42Constructional features of converters
    • C21C5/46Details or accessories
    • C21C5/4686Vehicles for supporting and transporting a converter vessel
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The invention discloses a kind of converter vaporization flue piecewise combination installation method of the present invention, the installation method includes the following steps:Including following construction procedure:Step 1: preparation of construction;Step 2: group pair;Gasification cooling flue, since diameter is big, state of marching into the arena substantially is that segmentation is marched into the arena, in view of reducing the safety of working at height, in the case where permission is turned in mill construction space, oblique section two and oblique section three are fitted together, corner flue one and corner flue two are fitted together;Step 3:Lifting;Oblique section assembly is lifted first, after the completion of oblique section assembly lifts, starts to lift corner segments assembly.It is an advantage of the invention that saving the use of large lifting equipment, improving labor efficiency and lowering labor intensity avoids or reduces the danger that working at height is brought, and improves installation management and control risk.

Description

A kind of converter vaporization flue piecewise combination installation method

Technical field

The present invention relates to a kind of construction methods, and more specifically, it relates to a kind of installations of converter vaporization flue piecewise combination Method.

Background technology

Gasification cooling flue system is the important component of converter, as converter flue recycling key equipment, There are direct lift-on/lift-off system and beam engineering method on installation method, but considers that the factors such as evaporated flue own dimensions are long, weight is big influence, vapour Change flue, which must be segmented to march into the arena, to be installed, and how to ensure the installation quality of evaporated flue and improve installation effectiveness to be the weight considered Point.Currently, existing do not retrieve in China national Patent Office about a kind of converter vaporization flue piecewise combination installation method;But There is the Patent design of similar title;" a kind of converter vaporization flue row issued such as China national Patent Office's on February 26th, 2014 The construction method of dirty system ", application number:CN201310637261.X is mainly introduced by changing blow-off line layout, Valve blowdown mode is improved to reach optimization evaporated flue contaminant removal effectiveness.Valve avoids the installation of human body significant points, can reach The purpose of safety is improved, the centralized layout of valve has convenient for pipeline valve distribution, personal observations easy to operation and erect-position Advantage installs quick draining valves additional respectively again after gate valve, usually that gate valve is normally opened, and blowdown effect is improved by operating quick draining valves Rate can carry out on-call maintenance or replacement when quick draining valves breaks down or leaks with closing gate valve.But currently, not having also A kind of converter vaporization flue piecewise combination installation method.

It will produce a large amount of high-temperature flue gas in steelmaking process, main component is carbon monoxide.Coal gas of converter calorific capacity is reachable 7524-9196kJ is a kind of first-class fuel, can be used as the fuel of the equipment such as heater for rolling steel, lime sleeve kiln, ladle baking. The dust for also containing a large amount of high Fe contents in flue gas simultaneously, can be used as the superior raw material of sinter after collection.In addition, high-temperature flue gas By heat exchange and recyclable a large amount of steam, utilization of steam is very wide, can be not only used for producing, and can be used for living.Therefore, to converter Flue gas using energy source meaning is very great.If these high-temperature flue gas do not recycle, distributes and will produce serious dirt in workshop and air Dye, jeopardize health of human body and agricultural production, while power grid, TV and communication can be interfered etc..In pneumatic steelmaking, steel-making is generated The processing of flue gas is one of the outstanding feature of steel mill Environmental Protection Level, and the recycling and reuse of coal gas and steam are also that its energy consumption refers to Target key factor, and the steam of pneumatic steelmaking and coal-gas recovering are realized by off-gas recovery purification system.

Invention content

The present invention in view of the deficiencies of the prior art, and provides a kind of converter vaporization flue piecewise combination installation method.It solves Its progress, quality, safety problem for occurring in steel-making workshop Steel Structure Installation linking.

A kind of converter vaporization flue piecewise combination installation method of the present invention, the installation method include the following steps:

Step 1: preparation of construction;

1.1 fabricating yard Horizon seamlesses are real, meet the condition of the place level of gasification cooling flue sectional;

1.2 welding equipments are marched into the arena, and are all prepared in place with material the closing measure of evaporated flue in welding process;

1.3 carry out qualification of welding procedure to material according to the rules, assign weld job guiding book, and carry out to welding procedure It tells somebody what one's real intentions are;

1.4 wldings are stored in special storehouse, storehouse drying, well-ventilated;

1.5 shoulder pole for hoisting prepare in place;

1.6, according to lifting requirements, wouldn't install the steel construction in gasification cooling flue hoisting process, structural stability Girder must be installed;

1.7 are arranged gasification cooling flue installation center line and absolute altitude on steel structure girder according to the requirement of factory building columns alignment;

Step 2: group pair

Gasification cooling flue, since diameter is big, state of marching into the arena substantially is that segmentation is marched into the arena, it is contemplated that reduces the peace of working at height Entirely, in the case where permission is turned in mill construction space, oblique section two and oblique section three are fitted together, by corner flue one and turned Angle flue two fits together.

2.1 are lifted on oblique section two and oblique section three on the ground of smooth compacting, and level is put, and oblique section two and oblique section are controlled Three levelness, centrad start in ground welding after parameter centering;

2.2 by corner flue one and the lifting to the ground of smooth compacting of corner flue two, and level is put, in corner cigarette The levelness of two groups of road one and corner flue to controlling oblique section two and oblique section three in the process, center spacing, parameter centering finish After weld;

Step 3:Lifting

3.1 lift oblique section assembly first, and after supporting beam stage+module welds, steel is hung up properly using crane A suspension hooks Cord, shoulder pole for hoisting are lifted, and the uniform force of steel wire rope is kept;When all working all after setting completed, slowly rise Hanging vehicle A suspension hooks, vertically sling, when oblique section assembly is more than insertion support Liangping after steel-making is high across technique platform from bottom to top In platform, after oblique section assembly hypomere runs through supporting beam platform, oblique section assembly is slowly adjusted from downside using crane B suspension hooks Angle, so that it is smoothly located on supporting beam platform, after angle adjusts, on platform one be arranged temporary support machine Structure keeps oblique section assembly fixed angle;

3.2 after the completion of oblique section assembly lifts, and starts to lift corner segments assembly, is completed in corner segments assembly Afterwards, it crane A suspension hooks is started with slings corner segments assembly and slowly fall on supporting beam platform, decoupling device after stablizing;

3.3 then lift oblique section one, since oblique section one is in workshop platform, can not directly lift, be hung using Relay Method Dress, is first sling oblique section one with crane B suspension hooks, and oblique section one is mounted on lifting rope one and lifting rope two respectively before slinging Upper and lower both sides four lifting lugs on, a reserved rope is separately pre-set on the lifting lug of upside, and on platform above Elevator pulley combination is set;When crane B suspension hooks, which lift oblique section one, arrives the platform limit, the suspension hook of elevator pulley combination is placed, is hung Reserved rope is played, then by elevator pulley combination and crane B suspension hooks synchronous matching that oblique section one is in place;Start to weld after in place Connect oblique section one and oblique section assembly;

The mobile flue of 3.4 converter evaporation cooling air flues is monoblock type, before lifting, first installs mobile flue track, It is mobile trolley used that mobile flue is lifted after erecting and welding again, integral hoisting gasification cooling flue mobile flue after centering, Levelling capturing, installation terminate.

Further;Making place in the step 1 needs smooth compacting, ensure major diameter, the storage of the equipment of large-tonnage and It is not easy to deform.

Further;Shoulder pole for hoisting in the step 1 is made of H profile steel, and spacing 500mm is set in shoulder pole for hoisting Set long stiffened panel, gusset thickness 16mm;Total length is 5m.

Further;The longitudinal and transverse direction center that gasification cooling flue is provided according to factory building columns alignment in the step 1 Line.

Further;The special storehouse of wlding storage in the step 1, is equipped with thermometer and hygrometer, environment temperature is not Less than 5 DEG C, air humidity is maintained at 50% or less;Wlding is kept away by the stacking method of type, the trade mark, specification, entry time classification Exempt from chaotic in library.

Further;The lifting of oblique section assembly is to utilize single crane hoisting in the step 3, and two-shipper method in place starts It is lifted using lifting A suspension hooks, follow-up auxiliary lifting B suspension hooks adjust the angle.

Further;The lifting of corner segments assembly lifts the lifting of A suspension hooks using single crane hoisting in the step 3.

Further;The lifting of oblique section one is to use single crane hoisting, the combined type lifting side of Alley Oop in the step 3 Formula is first sling oblique section one with crane B suspension hooks, in place using elevator pulley combination relay afterwards.

The sectionally assembled installation method of a kind of converter vaporization flue proposed by the invention, it is easy to assembly fast using ground Victory, reliable in quality reduce the risk of working at height;Combined type lifting substantially reduces segmental hoisting and occupies the crane time, reduces Large-scale crane machine-team takes and labour cost, improves construction speed, not only meets design and code requirement, but also reduce cost, contracting The short duration.

The above-mentioned a kind of purposes of the sectionally assembled installation method of converter vaporization flue provided by the invention is constructed the factory buildings newly Evaporated flue installation exercise work under environment, in the lifting of Alley Oop method can try out the evaporated flue in technology innovation project and hang Pretend the application of industry;

The present invention has main advantageous effect below compared with traditional installation method:Save making for large lifting equipment With improving labor efficiency and lowering labor intensity avoids or reduces the danger that working at height is brought, and improves installation management and control risk.Ground Covering weave, it is convenient and reliable, improve welding quality.In conclusion present invention ground assembling in the installation of large-scale evaporated flue improves Erecting and welding quality;Combined type lifting reduces working at height risk;In whole installation process, safe and efficient, reliable in quality.

Description of the drawings

1 converter evaporation cooling air flue of attached drawing forms layout drawing.

The oblique section assembly assembling schematic diagram of 2 converter evaporation cooling air flue of attached drawing.

3 converter evaporation cooling air flue corner segments assembly assembling schematic diagram of attached drawing.

The oblique section assembly lifting schematic diagram of 4 converter evaporation cooling air flue of attached drawing.

5 converter evaporation cooling air flue corner segments assembly lifting schematic diagram of attached drawing.

Oblique one lifting schematic diagram of section of 6 converter evaporation cooling air flue of attached drawing.

7 converter evaporation cooling air flue mobile flue lifting schematic diagram of attached drawing.

In figure:Skirt cover 1, mobile flue 2, oblique section 1, oblique section 24, oblique section 35, corner flue 1, corner flue 27, Mobile flue track 8, mobile flue be mobile trolley used 9, supporting beam platform 10, oblique section assembly 11, shoulder pole for hoisting 12, crane A Suspension hook 13, steel wire rope 14, crane B suspension hooks 15, platform 1, temporary support mechanism 17, corner segments assembly 18, elevator pulley blocks Close 19, reserved rope 20, lifting rope 1, lifting rope 2 22.

Specific implementation mode

Below by specific embodiment, the technical solutions of the present invention will be further described, but the present invention is simultaneously It is not limited to embodiment.

A kind of converter vaporization flue piecewise combination installation method of the present invention, which is characterized in that the installation method includes Following steps:

Step 1: preparation of construction;

1.1 fabricating yard Horizon seamlesses are real, meet the condition of the place level of gasification cooling flue sectional;

1.2 welding equipments are marched into the arena, and are all prepared in place with material the closing measure of evaporated flue in welding process;

1.3 carry out qualification of welding procedure to material according to the rules, assign weld job guiding book, and carry out to welding procedure It tells somebody what one's real intentions are;

1.4 wldings are stored in special storehouse, storehouse drying, well-ventilated;

1.5 shoulder pole for hoisting 12 prepare in place;

1.6, according to lifting requirements, wouldn't install the steel construction in gasification cooling flue hoisting process, structural stability Girder must be installed;

1.7 are arranged gasification cooling flue installation center line and absolute altitude on steel structure girder according to the requirement of factory building columns alignment;

Step 2: group pair

2.1 are lifted on oblique section 24 and oblique section 35 on the ground of smooth compacting, and level is put, control oblique section 24 with Levelness, the centrad of oblique section 35 start in ground welding after parameter centering;

2.2 by corner flue 1 and the lifting to the ground of smooth compacting of corner flue 27, and level is put, in corner The levelness of 27 groups of flue 1 and corner flue to controlling oblique section 24 and oblique section 35 in the process, center spacing, parameter are looked for It is welded after just;

Step 3:Lifting

3.1 lift oblique section assembly 11 first, after supporting beam 10 erecting and welding of platform, utilize crane A suspension hooks 13 Hang up properly steel wire rope, shoulder pole for hoisting 12 is lifted, keep the uniform force of steel wire rope;When all setting completed for work Afterwards, slow raising crane A suspension hooks 13, vertically sling, after oblique section assembly 11 is more than to make steel high across technique platform from bottom to top Insertion supporting beam platform 10 in, when oblique 11 hypomere of section assembly run through supporting beam platform 10 after, using crane B suspension hooks 15 from Downside slowly adjusts the angle of oblique section assembly 11, it is made smoothly to be located on supporting beam platform 10, after angle adjusts, Temporary support mechanism 17 is set on platform 1, keeps oblique 11 fixed angle of section assembly;

3.2 after the completion of oblique section assembly 11 lifts, and starts to lift corner segments assembly 18, in 18 groups of corner segments assembly It after the completion of dress, starts with crane A suspension hooks 13 and slings corner segments assembly 18 and slowly fall on supporting beam platform 10, after stablizing Decoupling device;

3.3 then lift oblique section 1, since oblique section 1 is in workshop platform, can not directly lift, using Relay Method Lifting, is first sling oblique section 1 with crane B suspension hooks 15, is pacified respectively with lifting rope 1 and lifting rope 2 22 before slinging On four lifting lugs of the upper and lower both sides of oblique section 1, a reserved rope 20 is separately pre-set on the lifting lug of upside, and Elevator pulley combination 19 is set on platform above;When crane B suspension hooks 15 lift oblique section 1 to the platform limit, volume is placed The suspension hook of pulley combination 19 is raised, hangs up and reserves rope 20, then will by elevator pulley combination 19 and 15 synchronous matching of crane B suspension hooks Oblique section 1 is in place;Start to weld oblique section 1 and oblique section assembly 11 after in place;

The mobile flue 2 of 3.4 converter evaporation cooling air flues is monoblock type, before lifting, first installs mobile flue track 8, lift mobile flue mobile trolley used 9 after erecting and welding again, integral hoisting gasification cooling flue mobile tobacco after centering Road 2, levelling capturing, installation terminates.

Making place in the step 1 needs smooth compacting, ensures that major diameter, the equipment of large-tonnage are stored and be not easy Deformation.

Shoulder pole for hoisting 12 in the step 1 is made of H profile steel, spacing 500mm settings length in shoulder pole for hoisting 12 Stiffened panel, gusset thickness 16mm;Total length is 5m.

The longitudinal and transverse direction center line that gasification cooling flue is provided according to factory building columns alignment in the step 1.

The special storehouse of wlding storage in the step 1, is equipped with thermometer and hygrometer, and environment temperature is not less than 5 DEG C, air humidity is maintained at 50% or less;Wlding is avoided by the stacking method of type, the trade mark, specification, entry time classification in library It is chaotic.

The lifting of oblique section assembly 11 is that single crane hoisting, two-shipper method in place is utilized to start in the step 3 The lifting of A suspension hooks is lifted, follow-up auxiliary lifting B suspension hooks adjust the angle.

The lifting of corner segments assembly 18 lifts the lifting of A suspension hooks using single crane hoisting in the step 3.

The lifting of oblique section 1 is that single crane hoisting, the combined type lifting mode of Alley Oop is used first to use in the step 3 Crane B suspension hooks sling oblique section 1, in place using 19 relay of elevator pulley combination afterwards.

Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims (8)

1. a kind of converter vaporization flue piecewise combination installation method, which is characterized in that the installation method includes the following steps:
Step 1: preparation of construction;
1.1 fabricating yard Horizon seamlesses are real, meet the condition of the place level of gasification cooling flue sectional;
1.2 welding equipments are marched into the arena, and are all prepared in place with material the closing measure of gasification cooling flue in welding process;
1.3 carry out qualification of welding procedure to material according to the rules, assign weld job guiding book, and hand over welding procedure Bottom;
1.4 wldings are stored in special storehouse, storehouse drying, well-ventilated;
1.5 shoulder pole for hoisting(12)Prepare in place;
1.6, according to lifting requirements, wouldn't install the steel construction in gasification cooling flue hoisting process, the girder of structural stability It must install;
1.7 are arranged gasification cooling flue installation center line and absolute altitude on steel structure girder according to the requirement of factory building columns alignment;
Step 2: group pair;
2.1 by oblique section two(4)With oblique section three(5)It is lifted on the ground of smooth compacting, level is put, and oblique section two is controlled(4) With oblique section three(5)Levelness, centrad, start in ground welding after parameter centering;
2.2 by corner flue one(6)With corner flue two(7)On lifting to the ground of smooth compacting, level is put, in corner Flue one(6)With corner flue two(7)Group to controlling oblique section two in the process(4)With oblique section three(5)Levelness, between center Away from being welded after parameter centering;
Step 3:Lifting;
3.1 lift oblique section assembly first(11), in supporting beam platform(10)After erecting and welding, crane A suspension hooks are utilized (13)Hang up properly steel wire rope, shoulder pole for hoisting(12)It is lifted, keeps the uniform force of steel wire rope;When all settings that all works After, slow raising crane A suspension hooks(13), vertically sling, when oblique section assembly(11)More than steel-making height after technique platform Insertion supporting beam platform from bottom to top(10)In, when oblique section assembly(11)Hypomere runs through supporting beam platform(10)Afterwards, it utilizes Crane B suspension hooks(15)Oblique section assembly is slowly adjusted from downside(11)Angle, so that it is smoothly located in supporting beam platform(10) On, after angle adjusts, in platform one(16)Upper setting temporary support mechanism(17), keep oblique section assembly(11)It is fixed Angle;
3.2 in oblique section assembly(11)After the completion of lifting, start to lift corner segments assembly(18), in corner segments assembly(18) After being completed, crane A suspension hooks are started with(13)By corner segments assembly(18)It slings and slowly falls into supporting beam platform(10) On, decoupling device after stablizing;
3.3 then lift oblique section one(3), due to oblique section one(3)In workshop platform, can not directly it lift, using Relay Method Crane B suspension hooks are first used in lifting(15)By oblique section one(3)It slings, respectively with lifting rope one before slinging(21)With lifting rope Two(22)Mounted on oblique section one(3)Upper and lower both sides four lifting lugs on, separately pre-set on the lifting lug of upside one it is reserved Rope(20), and elevator pulley combination is set on platform above(19);When crane B suspension hooks(15)Lift oblique section one(3)It arrives When the platform limit, elevator pulley combination is placed(19)Suspension hook, hang up reserve rope(20), then pass through elevator pulley combination(19) With crane B suspension hooks(15)Synchronous matching is by oblique section one(3)In place;Start to weld oblique section one after in place(3)It is combined with oblique section Body(11);
The mobile flue of 3.4 converter evaporation cooling air flues(2)Mobile flue track is first installed before lifting for monoblock type (8), it is mobile trolley used that mobile flue is lifted again after erecting and welding(9), integral hoisting gasification cooling flue moves after centering Dynamic flue(2), levelling capturing, installation terminates.
2. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 1 In making place need smooth compacting, ensure major diameter, the storage of the equipment of large-tonnage and be not easy to deform.
3. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 1 In shoulder pole for hoisting(12)It is made of H profile steel, shoulder pole for hoisting(12)Long stiffened panel is arranged in interior spacing 500mm, and gusset is thick Spend 16mm;Total length is 5m.
4. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 1 In the longitudinal and transverse direction center line that gasification cooling flue is provided according to factory building columns alignment.
5. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 1 In wlding storage special storehouse, be equipped with thermometer and hygrometer, environment temperature be not less than 5 DEG C, air humidity is maintained at 50% or less;Wlding avoids confusion in library by the stacking method of type, the trade mark, specification, entry time classification.
6. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 3 In oblique section assembly(11)Lifting be utilize single crane hoisting, two-shipper method in place, start with lifting A suspension hooks lifting, after Continuous auxiliary lifting B suspension hooks adjust the angle.
7. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 3 Middle corner segments assembly(18)Lifting lifts the lifting of A suspension hooks using single crane hoisting.
8. a kind of converter vaporization flue piecewise combination installation method according to claim 1, characterized in that the step 3 In oblique section one(3)Lifting be to use single crane hoisting, the combined type lifting mode of Alley Oop first uses crane B suspension hooks by oblique section One(3)It slings, utilizes elevator pulley combination afterwards(19)Relay is in place.
CN201610744276.XA 2016-08-29 2016-08-29 A kind of converter vaporization flue piecewise combination installation method CN106435087B (en)

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CN107763304A (en) * 2017-10-20 2018-03-06 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of replacing options of the vertical FlexbleJoint in high-altitude
CN108381052A (en) * 2018-01-22 2018-08-10 中国十七冶集团有限公司 A kind of converter vaporization flue site welding method
CN109022672B (en) * 2018-08-24 2020-03-10 中国二十冶集团有限公司 Installation method of converter vaporization cooling flue during maintenance
CN110306755A (en) * 2019-07-03 2019-10-08 南通八建集团有限公司 Kitchen chimney flue engineering construction method
CN110373512A (en) * 2019-08-16 2019-10-25 中国十七冶集团有限公司 A kind of converter dry cleaner combined installation method

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CN101804501B (en) * 2010-04-01 2012-04-25 中国二十二冶集团有限公司 Ground assembling and welding integral installation and construction technology for vaporization-cooling chimney
CN102703640B (en) * 2012-04-17 2014-03-19 中国十七冶集团有限公司 Method of maintenance and lifting for moving section flue at converter mouth
CN102816891B (en) * 2012-08-23 2014-02-12 中国十七冶集团有限公司 Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter
CN104846143B (en) * 2015-06-09 2017-03-22 中国十九冶集团有限公司 Construction method for replacing steelmaking converter flue

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