CN102816891A - Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter - Google Patents
Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter Download PDFInfo
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- CN102816891A CN102816891A CN2012103022484A CN201210302248A CN102816891A CN 102816891 A CN102816891 A CN 102816891A CN 2012103022484 A CN2012103022484 A CN 2012103022484A CN 201210302248 A CN201210302248 A CN 201210302248A CN 102816891 A CN102816891 A CN 102816891A
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- converter
- evaporated flue
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- lifting
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000009834 vaporization Methods 0.000 title claims abstract description 13
- 230000008016 vaporization Effects 0.000 title claims abstract description 13
- 239000000725 suspension Substances 0.000 claims description 28
- 238000012423 maintenance Methods 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to a hoisting method for overhauling and dismantling a vaporization flue fixed at the first section of a converter, belonging to a hoisting device for equipment. The hoisting method comprises the following specific steps of: firstly, arranging a hoisting jig; secondly, arranging hoisting points and a hoisting steel wire rope; thirdly, dismantling a support seat; and fourthly, dismantling the vaporization flue fixed at the first section: (1) horizontal positioning: enabling the vaporization flue fixed at the first section to be horizontally placed on a body of the converter; (2) moving the vaporization flue fixed at the first section rightwards: enabling the vaporization flue fixed at the first section and the converter to commonly rotate and move rightwards to the inside of an adding bay of the converter; and (3) lifting the vaporization flue fixed at the first section: lifting a secondary lifting rope and a main lifting rope for an adding bay traveling crane, lifting the vaporization flue fixed at the first section and moving the adding bay traveling crane to hoist the vaporization flue fixed at the first section to the designated position to finish the dismantling and hoisting work. The efficiency and the quality for overhauling and dismantling the vaporization flue fixed at the first section of the converter are effectively improved, the construction cost is reduced and the overhaul time is shortened.
Description
Technical field
The invention belongs to the equipment hoisting method, relate in particular to the hanging method that a kind of converter evaporated flue maintenance is removed.
Background technology
At present; In metallurgical converter steel-making, run into first section fixing (promptly fixedly I section) evaporated flue and need the situation of replacing because of the production serious wear through regular meeting; But technique platform, the equipment layout flyover in converter zone are more, this first section fixedly evaporated flue be arranged in the converter movable evaporated flue and fixedly between the II section evaporated flue, solid space is very compact narrow and small; Usually change this first section fixedly during evaporated flue; The part technique platform that support and the top of need removing this flue fixedly influences on II section evaporated flue and the hoisting passage and with the first section fixing medium pipeline that be connected of evaporated flue so that let the section of informing against fixedly evaporated flue remove the passage that lifting is transported, but the defective of this common method for dismounting is: be the fixing evaporated flue of first section of dismounting replacing; Technique platform and the top flue workplace removed are big; The dismounting parts are many, not only because of the dismounting scope prolongs the repair time greatly, influence the production of owner factory; Also can be big because of removing workplace, the mechanical means increase of input maintainer and use and strengthened the input of the engineering cost of overhaul.
Summary of the invention
The purpose of this invention is to provide the fixedly hanging method removed of evaporated flue maintenance of first section of a kind of converter, safe and reliable, improve the fixedly evaporated flue maintenance efficient and the quality of removing of first section of converter effectively, reduce construction cost and reduce the repair time.
The objective of the invention is to realize like this: first section of a kind of converter is the hanging method removed of evaporated flue maintenance fixedly; Because of first section fixedly evaporated flue 5 be positioned at converter 3 fire doors directly over; Converter 3 is supported on the basis converter 1 through chock 2, and converter 3 can do 360 under the support of chock 2
0The rotation, first section fixedly evaporated flue 5 be fixedly mounted on the supporting seat 4; So first section of a kind of converter is the hanging method (abbreviation hanging method) removed of evaporated flue maintenance fixedly, its concrete steps are following:
One, hoisting machine tool is set:
1), winding plant is set:
On converter rear portion two-layer platform 7, place the windlass 8 that is used for drive pulley group 13, the power of this windlass 8 can be 15kw;
2), tackleblock is set:
Tackleblock 13 is fixed on the oxygen rifle landing beam 12; The haulage cable 17 that makes tackleblock 13 oscilaltions is installed between windlass 8 and tackleblock 13; The point of fixity of this tackleblock 13 is on-the-spot to be selected; Should guarantee that haulage cable 17 and main lifting wireline 14 on the tackleblock 13 all do not have to keep off hinders, and this tackleblock 13 can be 20t-25 t tackleblock;
Two, arrange suspension centre and lifting wireline:
1), arrange main suspension centre and main lifting wireline:
First section fixedly on the top distance of the tilting section right flank of evaporated flue 5 terminal pad (upper flange plate) upper surface 500mm place be welded otic placode with holes as main suspension centre, the main lower end section that lifts wireline 14 that the upper end is fixed on the tackleblock 13 is fixedly attached on this main suspension centre;
2), arrange secondary suspension centre and secondary lifting wireline:
First section fixedly under the middle part distance of the vertical section right flank of evaporated flue 5 terminal pad lower surface 500mm place be welded otic placode with holes as secondary suspension centre; The master on the lifting main hook 9 of inter-bank car 11 of will feeding in raw material again lifts rope 15 and is fixedly connected on this secondary suspension centre as pair lifting wireline
Drive windlass 8 and lifting main hook 9 then respectively, make main lifting wireline 14 and the main rope 15 (promptly secondary lifting wireline) that lifts be in little strained condition, remove supporting seat 4 for next step and prepare;
Three, remove supporting seat:
Four, remove first section fixedly evaporated flue:
1), horizontal displacement:
2), the first section fixedly evaporated flue that move to right:
The converter 3 that continues to turn clockwise, main simultaneously lifting wireline 14 cooperates the rotation of converters 3 wireline that descends respectively with the main rope 15 that lifts, make first section fixedly evaporated flue 5 and converter 3 together rotate move to right to converter is reinforced stride in, and make the fire door of converter 3 rotate 90
0Horizontal, make first section fixedly evaporated flue 5 maximum activity space is arranged;
3), lift first section fixedly evaporated flue:
The lifting auxiliary hook 10 of the reinforced inter-bank car 11 of decline; Make pair on the lifting auxiliary hook 10 lift rope 16 and be connected to the first section fixedly main suspension centre place on the evaporated flue 5 and being attached thereto firmly; The lifting auxiliary hook 10 that hoists makes pair lift rope 16 to be in strained condition, and the removal master lifts wireline 14, and the windlass 8 of reverse drive tackleblock 13 reclaims main lifting wireline 14 then; Make the power at this main suspension centre place transfer to pair and lift on the rope 16, continue rotation converter 3 and makes fire door rotate 120
0(from directly over); This moment first section fixedly evaporated flue 5 under the rotation of converter 3 bodies of heater; Be transferred to reinforced striding, the pair of the reinforced inter-bank car 11 that hoists lifts rope 16 and the main rope 15 that lifts, and promotes first section fixedly evaporated flue 5; Move reinforced inter-bank car 11 with first section fixedly evaporated flue 5 winch to specified location, accomplished the first section fixedly dismounting lifting work of evaporated flue 5.
First section of a kind of converter proposed by the invention is the hanging method removed of evaporated flue maintenance fixedly, and is safe and reliable, improves the fixedly evaporated flue maintenance efficient and the quality of removing of first section of converter effectively, reduces construction cost and reduced the repair time.
Now in conjunction with the accompanying drawings and embodiments to first section of a kind of converter proposed by the invention fixedly the hanging method removed of evaporated flue maintenance be described further.
Description of drawings
Fig. 1 is fixedly fixedly evaporated flue configuration and arrange synoptic diagram of first section of the converter in the hanging method removed of evaporated flue maintenance of first section of a kind of converter proposed by the invention.
Fig. 2 be first section of a kind of converter proposed by the invention fixedly suspension centre and the weight handling equipment in the hanging method removed of evaporated flue maintenance arrange synoptic diagram.
Fig. 3 is fixedly one of dismounting hoisting process synoptic diagram in the hanging method removed of evaporated flue maintenance of first section of a kind of converter proposed by the invention.
Fig. 4 be first section of a kind of converter proposed by the invention fixedly the dismounting hoisting process synoptic diagram in the hanging method removed of evaporated flue maintenance two.
Fig. 5 be first section of a kind of converter proposed by the invention fixedly the dismounting hoisting process synoptic diagram in the hanging method removed of evaporated flue maintenance three.
Fig. 6 be first section of a kind of converter proposed by the invention fixedly the dismounting hoisting process synoptic diagram in the hanging method removed of evaporated flue maintenance four.
Among Fig. 1-Fig. 6:
1, basis converter 2, chock 3, converter 4, supporting seat 5, first section fixedly evaporated flue 6, II section fixedly evaporated flue 7, converter rear portion two-layer platform 8, windlass 9, lifting main hook 10, lifting auxiliary hook 11, reinforced inter-bank car 12, oxygen rifle landing beam 13, tackleblock 14, main lifting wireline 15, mainly lift rope 16, pair lifts rope 17, haulage cable.
Embodiment
Embodiment
Remove at certain steelworks 60t converter evaporation cooling air flue and to change in engineering, this first section fixing long 13 meters, weight 10t of evaporated flue, but it is very little to remove the zone of operation; Just adopt this hanging method to construct; The operation of whole dismounting hoisting process is implemented smooth, make this first section fixedly evaporated flue remove the time of changing and advanceed to 3 days by 5 days, converter is produced and is recovered fast; Effect is fairly obvious, and dismounting efficient is high, product protection is good.Its construction procedure is:
One, hoisting machine tool is set:
1), winding plant is set:
On converter rear portion two-layer platform 7, place the windlass 8 that is used for drive pulley group 13, the power of this windlass 8 is 15kw;
2), tackleblock is set:
Tackleblock 13 is fixed on the oxygen rifle landing beam 12; The haulage cable 17 that makes tackleblock 13 oscilaltions is installed between windlass 8 and tackleblock 13; The point of fixity of this tackleblock 13 is on-the-spot to be selected; The main lifting wireline 14 that should guarantee haulage cable 17 and tackleblock 13 does not all have to keep off and hinders, and this tackleblock 13 is the 20t tackleblock;
Two, arrange suspension centre and lifting wireline:
1), arrange main suspension centre and main lifting wireline:
First section fixedly on the top distance of the tilting section right flank of evaporated flue 5 terminal pad (upper flange plate) upper surface 500mm place be welded otic placode with holes as main suspension centre; The lower end section that the upper end is fixed on the main lifting wireline 14 on the tackleblock 13 is fixedly attached on this main suspension centre
2), arrange secondary suspension centre and secondary lifting wireline:
First section fixedly under the middle part distance of the vertical section right flank of evaporated flue 5 terminal pad lower surface 500mm place be welded otic placode with holes as secondary suspension centre; The master on the lifting main hook 9 of inter-bank car 11 of will feeding in raw material again lifts rope 15 and is fixedly connected on this secondary suspension centre as pair lifting wireline
Start windlass 8 and lifting main hook 9 then respectively, make main lifting wireline 14 and the main rope 15 (promptly secondary lifting wireline) that lifts be in little strained condition, remove supporting seat 4 for next step and prepare;
Three, remove supporting seat:
Four, remove first section fixedly evaporated flue:
1), horizontal displacement:
2), the first section fixedly evaporated flue that move to right:
The converter 3 that continues to turn clockwise, main simultaneously lifting wireline 14 cooperates the rotation of converters 3 wireline that descends respectively with the main rope 15 that lifts, make first section fixedly evaporated flue 5 and converter 3 together rotate move to right to converter is reinforced stride in, and make the fire door of converter 3 rotate 90
0Horizontal, make first section fixedly evaporated flue 5 maximum activity space is arranged;
3), lift first section fixedly evaporated flue:
The lifting auxiliary hook 10 of the reinforced inter-bank car 11 of decline; Make pair on the lifting auxiliary hook 10 lift rope 16 and be connected to the first section fixedly main suspension centre place on the evaporated flue 5 and being attached thereto firmly; The lifting auxiliary hook 10 that hoists makes pair lift rope 16 to be in strained condition, and the removal master lifts wireline 14, and the windlass 8 of reverse drive tackleblock 13 reclaims main lifting wireline 14 then; Make the power of this main suspension centre transfer to pair and lift on the rope 16, continue rotation converter 3 and also makes fire door rotate 120
0(from directly over); This moment first section fixedly evaporated flue 5 under the rotation of converter 3 bodies of heater; Be transferred to reinforced striding, the pair of the reinforced inter-bank car 11 that hoists lifts rope 16 and the main rope 15 that lifts, and promotes first section fixedly evaporated flue 5; Move reinforced inter-bank car 11 with first section fixedly evaporated flue 5 winch to specified location, accomplished the first section fixedly dismounting lifting work of evaporated flue 5.
Claims (1)
1. the fixing hanging method removed of evaporated flue maintenance of first section an of converter, its concrete steps are following:
One, hoisting machine tool is set:
1), winding plant is set:
Two-layer platform (7) is gone up and is placed the windlass (8) that is used for drive pulley group (13) at the converter rear portion, and the power of this windlass (8) is 15kw;
2), tackleblock is set:
Tackleblock (13) is fixed on the oxygen rifle landing beam (12); The haulage cable (17) that makes tackleblock (13) oscilaltion is installed between windlass (8) and tackleblock (13); The point of fixity of this tackleblock (13) is on-the-spot to be selected; The main lifting wireline (14) that should guarantee haulage cable (17) and tackleblock (13) does not all have to keep off and hinders, and this tackleblock (13) is a 20t-25 t tackleblock;
Two, arrange suspension centre and lifting wireline:
1), arrange main suspension centre and main lifting wireline:
First section fixedly the last terminal pad upper surface 500mm of the top distance place of the tilting section right flank of evaporated flue (5) be welded otic placode with holes as main suspension centre, the main lower end section that lifts wireline (14) that the upper end is fixed on the tackleblock (13) is fixedly attached on this main suspension centre;
2), arrange secondary suspension centre and secondary lifting wireline:
First section fixedly under the middle part distance of the vertical section right flank of evaporated flue (5) terminal pad lower surface 500mm place be welded otic placode with holes as secondary suspension centre; The master on the lifting main hook (9) on the inter-bank car (11) of will feeding in raw material again lifts rope (15) and is fixedly connected on this secondary suspension centre as pair lifting wireline
Start windlass (8) and lifting main hook (9) then respectively, make main lifting wireline (14) and master lift rope (15) and be in little strained condition, remove supporting seat (4) for next step and prepare;
Three, remove supporting seat:
Main lifting wireline (14) and the main rope (15) that lifts hoist respectively; Until rise be raised to first section fixedly the supporting seat (4) of evaporated flue (5) do not bear first section fixedly till the gravity of evaporated flue (5); And first period of this moment fixedly the weight of evaporated flue (5) lift rope (15) and share jointly with leading by main lifting wireline (14) respectively; Use conventional instrument to remove fixing being connected and being connected this first section fixedly vaporization cooling water pipeline, the annex on the evaporated flue (5) of evaporated flue (6) of supporting seat (4) and upper flange plate and II section then, make first section fixedly evaporated flue (5) be free state;
Four, remove first section fixedly evaporated flue:
1), horizontal displacement:
Main lifting wireline (14) and the main rope (15) that lifts descend respectively; Make first section fixedly evaporated flue (5) progressively become horizontality by the primary dip state; Converter (3) simultaneously turns clockwise; Make first section fixedly evaporated flue (5) lie in a horizontal plane on the body of heater of converter (3), promptly first period of this moment fixedly evaporated flue (5) weight respectively by main lifting wireline (14), the master lifts rope (15) and converter (3) shares jointly;
2), the first section fixedly evaporated flue that move to right:
Converter (3) continues to turn clockwise; Main simultaneously lifting wireline (14) cooperates the rotation of converter (3) wireline that descends respectively with the main rope (15) that lifts; Make first section fixedly evaporated flue (5) and converter (3) together rotate move to right to converter is reinforced stride in, and make the fire door of converter (3) rotate 90
0Horizontal, make first section fixedly evaporated flue (5) maximum activity space is arranged;
3), lift first section fixedly evaporated flue:
The lifting auxiliary hook (10) of the reinforced inter-bank car (11) of decline; Make pair on the lifting auxiliary hook (10) lift rope (16) and be connected to the first section fixedly main suspension centre place on the evaporated flue (5) and being attached thereto firmly; The lifting auxiliary hook (10) that hoists makes pair lift rope (16) to be in strained condition; And the removal master lifts wireline (14); The windlass (8) of reverse drive tackleblock (13) reclaims main lifting wireline (14) then, makes the power of this main suspension centre transfer to pair and lifts on the rope (16), continues to rotate converter (3) and also makes fire door rotate to 120
0This moment first section fixedly evaporated flue (5) under the rotation of converter (3) body of heater; Be transferred to reinforced striding, the pair of the reinforced inter-bank car (11) that hoists lifts rope (16) and the master lifts rope (15), promotes first section fixedly evaporated flue (5); Move reinforced inter-bank car (11) with first section fixedly evaporated flue (5) winch to specified location, accomplished the first section fixedly dismounting lifting work of evaporated flue (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302248.4A CN102816891B (en) | 2012-08-23 | 2012-08-23 | Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302248.4A CN102816891B (en) | 2012-08-23 | 2012-08-23 | Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102816891A true CN102816891A (en) | 2012-12-12 |
| CN102816891B CN102816891B (en) | 2014-02-12 |
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| CN201210302248.4A Active CN102816891B (en) | 2012-08-23 | 2012-08-23 | Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060102A (en) * | 2014-07-08 | 2014-09-24 | 七冶建设有限责任公司 | Method for mounting large-sized flash smelting furnace |
| CN104418240A (en) * | 2013-08-27 | 2015-03-18 | 中国五冶集团有限公司 | Large flue lifting and assembly method |
| CN105907921A (en) * | 2016-04-14 | 2016-08-31 | 中国十七冶集团有限公司 | Relay hoisting method for gas cooler |
| CN105986057A (en) * | 2015-01-29 | 2016-10-05 | 江苏永钢集团有限公司 | Replacement method of heated pipe in evaporative cooling flue |
| CN106015729A (en) * | 2016-06-08 | 2016-10-12 | 中国十七冶集团有限公司 | Reverse in-position method for vaporization flue in closed plant |
| CN106435087A (en) * | 2016-08-29 | 2017-02-22 | 中国十七冶集团有限公司 | Sectional assembling and mounting method for converter vaporization flue |
| CN107267708A (en) * | 2017-07-07 | 2017-10-20 | 莱芜钢铁集团有限公司 | The replacing options of converter alloy rotating disk tremie pipe |
| CN108728605A (en) * | 2018-08-20 | 2018-11-02 | 攀钢集团工程技术有限公司 | Converter trunnion ring replacing options |
| CN108946470A (en) * | 2018-07-09 | 2018-12-07 | 莱芜钢铁集团有限公司 | A kind of replacing options for converter entirety flue |
| CN109022672A (en) * | 2018-08-24 | 2018-12-18 | 中国二十冶集团有限公司 | The installation method of converter evaporation cooling air flue when a kind of maintenance |
| CN115448189A (en) * | 2022-09-07 | 2022-12-09 | 上海宝冶工程技术有限公司 | Disassembly and hoisting method of converter vaporization flue |
| CN116255026A (en) * | 2023-02-15 | 2023-06-13 | 中国二十二冶集团有限公司 | Removal method of vaporization cooling flue based on BIM technology |
| CN117070705A (en) * | 2023-08-30 | 2023-11-17 | 鞍钢建设集团有限公司 | A method for replacing the converter vaporization cooling flue |
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|---|---|---|---|---|
| CN104418240A (en) * | 2013-08-27 | 2015-03-18 | 中国五冶集团有限公司 | Large flue lifting and assembly method |
| CN104418240B (en) * | 2013-08-27 | 2016-06-22 | 中国五冶集团有限公司 | The lifting of a kind of flue and group are to method |
| CN104060102B (en) * | 2014-07-08 | 2016-01-20 | 七冶建设有限责任公司 | A kind of large-scale flash smelting furnace installation method |
| CN104060102A (en) * | 2014-07-08 | 2014-09-24 | 七冶建设有限责任公司 | Method for mounting large-sized flash smelting furnace |
| CN105986057A (en) * | 2015-01-29 | 2016-10-05 | 江苏永钢集团有限公司 | Replacement method of heated pipe in evaporative cooling flue |
| CN105986057B (en) * | 2015-01-29 | 2017-10-20 | 江苏永钢集团有限公司 | A kind of gasification cooling flue heat pipe replacing options |
| CN105907921A (en) * | 2016-04-14 | 2016-08-31 | 中国十七冶集团有限公司 | Relay hoisting method for gas cooler |
| CN105907921B (en) * | 2016-04-14 | 2018-01-02 | 中国十七冶集团有限公司 | A kind of method of relay lifting gas cooler |
| CN106015729B (en) * | 2016-06-08 | 2018-03-06 | 中国十七冶集团有限公司 | A kind of reverse method in place of evaporated flue under sealing power house |
| CN106015729A (en) * | 2016-06-08 | 2016-10-12 | 中国十七冶集团有限公司 | Reverse in-position method for vaporization flue in closed plant |
| CN106435087A (en) * | 2016-08-29 | 2017-02-22 | 中国十七冶集团有限公司 | Sectional assembling and mounting method for converter vaporization flue |
| CN107267708A (en) * | 2017-07-07 | 2017-10-20 | 莱芜钢铁集团有限公司 | The replacing options of converter alloy rotating disk tremie pipe |
| CN107267708B (en) * | 2017-07-07 | 2019-04-05 | 莱芜钢铁集团有限公司 | The replacing options of converter alloy turntable feeder pipe |
| CN108946470A (en) * | 2018-07-09 | 2018-12-07 | 莱芜钢铁集团有限公司 | A kind of replacing options for converter entirety flue |
| CN108728605A (en) * | 2018-08-20 | 2018-11-02 | 攀钢集团工程技术有限公司 | Converter trunnion ring replacing options |
| CN109022672A (en) * | 2018-08-24 | 2018-12-18 | 中国二十冶集团有限公司 | The installation method of converter evaporation cooling air flue when a kind of maintenance |
| CN115448189A (en) * | 2022-09-07 | 2022-12-09 | 上海宝冶工程技术有限公司 | Disassembly and hoisting method of converter vaporization flue |
| CN116255026A (en) * | 2023-02-15 | 2023-06-13 | 中国二十二冶集团有限公司 | Removal method of vaporization cooling flue based on BIM technology |
| CN117070705A (en) * | 2023-08-30 | 2023-11-17 | 鞍钢建设集团有限公司 | A method for replacing the converter vaporization cooling flue |
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| CN102816891B (en) | 2014-02-12 |
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