CN106424692A - Constructing and repairing method for minor repair or mend of steel ladle of electric furnace - Google Patents

Constructing and repairing method for minor repair or mend of steel ladle of electric furnace Download PDF

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Publication number
CN106424692A
CN106424692A CN201610947859.2A CN201610947859A CN106424692A CN 106424692 A CN106424692 A CN 106424692A CN 201610947859 A CN201610947859 A CN 201610947859A CN 106424692 A CN106424692 A CN 106424692A
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CN
China
Prior art keywords
ladle
repairing
liner
electric furnace
slag line
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610947859.2A
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Chinese (zh)
Inventor
尹应生
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Wuyang Iron and Steel Co Ltd
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Wuyang Iron and Steel Co Ltd
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Publication date
Application filed by Wuyang Iron and Steel Co Ltd filed Critical Wuyang Iron and Steel Co Ltd
Priority to CN201610947859.2A priority Critical patent/CN106424692A/en
Publication of CN106424692A publication Critical patent/CN106424692A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02Linings

Abstract

The invention discloses a constructing and repairing method for minor repair or mend of a steel ladle of an electric furnace and belongs to the technical field of repairing methods for steel ladles of electric furnaces. The constructing and repairing method is used for minor repair or mend of the steel ladle of the electric furnace. The technical scheme is as follows: an eroded excessively-thin part of a slag line is dismounted in a minor repair or mend process of the steel ladle, a valuable defective part with a flush joint or a vertical joint on the slag line is retained, a retained working lining is repaired by using a semi-cured magnesium-carbon ladle lining joint repair material same as the material of a ladle lining, and construction is carried out after repair. The constructing and repairing method an initiation for repairing the steel lade of the electric furnace an is used for solving problems which are not solved for a long term in minor repair and mend of the steel lade. The method is simple in operation, convenient and feasible, can be implemented in the field of steel ladle construction and has favorable reference significance on the aspects of prolonging the online operation period of the steel lade, reducing the construction workload and achieving the aim of making the best use of steel ladle operation on the premise that the safety is ensured.

Description

What a kind of electric furnace ladle light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones
Technical field
The present invention relates to a kind of carry out with ladle to electric furnace that light maintenance or dig repaiies build method for repairing and mending by laying bricks or stones, belong to electric furnace ladle Method for maintaining technical field.
Background technology
Ladle maintenance be divided into overhaul, in repair, light maintenance, dig and the different maintenance classifications such as repair.Wherein overhaul and in repair and need entirety Keeped in repair, during overhaul, working lining, permanent liner and pocket block and Argon brick cup are all removed, only stay box hat;In when repairing Remove whole containment walls, slag line, underwrite lining work and pocket block and Argon brick cup, only retain containment wall and bag bottom permanent liner, so After re-start overall building by laying bricks or stones.It is modular repair that light maintenance and digging is repaiied, and removes slag line and underwrite lining work and pocket block during light maintenance With Argon brick cup, only retain containment wall working lining 1-11 layer, build 12-19 layer by laying bricks or stones, bag is continued to use special purpose packet and knotted along castable, finally pacifies Fill pocket block and Argon brick cup and build by laying bricks or stones and underwrite lining work, bag bottom surrounding is knotted with bag bottom pour mold material feeding;Dig and repair including repairing Bag edge, slag line local are dug and repair and change slag line, only bag is repaired along damaged location or slag line local defect position is entered Row digs repaiies and changes whole slag lines.
At present, to the building method of electric furnace ladle it is:Layer 1-7 adopts LB, LG(Thicken position)Brick;8-12 layer adopts LS Brick;13-18 layer adopts LF brick;19 layers adopt LU brick;Bag is along covering bag along castable;Bag bottom adopts LD1, LD2(Thicken position) Brick.But ladle is in actual motion, affected by factors, slag line working lining position local occur flush joint or perps and The phenomenon for corroding the defect such as thin happens occasionally.Practical site problems are, in conventional practical operation be occur flush joint, perps with And corroded the position such as thin and all remove, then re-start and build by laying bricks or stones.So, although slag line working lining occurs in that flush joint With the defects such as perps, but there be certain safe and effective thickness at the working lining position for defect occur(Corroded thin, less than safety Except effective thickness must be removed), the value that is also continuing with still is unlikely to remove.All remove and not only have impact on ladle Online service cycle, while the consumption for building workload and the cost of resistance to material by laying bricks or stones is also increased, and ladle fortune is not fully realized " safe and efficient, to make the best use of everything " this principle that row should be followed.Therefore, how to process still has the work shirt portion of certain use value It is divided into ladle light maintenance and digs and repaiies the medium-term and long-term difficult problem for not having and solving.
Content of the invention
The technical problem to be solved be provide that a kind of electric furnace ladle light maintenance or dig repaiies build method for repairing and mending by laying bricks or stones, This build by laying bricks or stones method for repairing and mending can ensureing on the basis of ladle " safe and efficient, to make the best use of everything ", solve ladle occur flush joint or The problem of perps, not only can effectively repair rejected region, and avoid the unnecessary consumption of resistance to material, while also extending Ladle service cycle, greatly meet the normal turnover needs of ladle.
Solve above-mentioned technical problem technical scheme be:
What a kind of electric furnace ladle light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, and it is carried out using following steps:
A. after ladle is offline, bag and overhaul bag in exclusion, is repaiied, selects to need slag line local to dig the ladle that repaiies;
B. remove slag line and thin section position was corroded, retain the rejected region that flush joint or perps occurs in slag line;
C. semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing is adopted, and material for repairing material is identical with ladle liner material;
D. will be clean to the cold steel of liner gap remaining, cold slag thorough cleaning, and expose the bottom stubble of original masonry;
E. with semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing be filled in liner occur the position in gap being allowed to fill full Uniformly, urgent with hand hammer, it is allowed to tight, firm, between material for repairing and original masonry, must not has space;
F. finally build slag line by laying bricks or stones and corrode thin dismounting position.
What above-mentioned electric furnace ladle light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, and work in the step b liner to ladle wall And the intact position of slag line work liner is preserved and protected.
The light maintenance of above-mentioned electric furnace ladle or the method for repairing and mending of building by laying bricks or stones that repaiies is dug, the semi-solid preparation magnesium carbonaceous ladle in step c Liner gap material for repairing is semi-solid material.
The light maintenance of above-mentioned electric furnace ladle or the method for repairing and mending of building by laying bricks or stones that repaiies is dug, the semi-solid preparation ladle liner seam in step d Gap material for repairing is consistent with the material of slag line liner, is all magnesium carbonaceous.
The invention has the beneficial effects as follows:
The present invention remains the work liner of value in ladle light maintenance and digging is repaiied, using identical with ladle liner material Semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing to retain work liner repair, built by laying bricks or stones after repairing.
The present invention is the pioneering of electric steel maintenance packet, solves ladle light maintenance and digs and repaiies the medium-term and long-term difficult problem for not having and solving. This method is simple, convenient feasible, builds field by laying bricks or stones in ladle and can all implement, and to extending ladle online service cycle, reduces and builds Workload is built, while under the premise that security is guaranteed, accomplishes that the aspects such as ladle running " making the best use of everything " have good reference and anticipate Justice.
The present invention has good production scene actual effect and considerable economic benefit, disclosure satisfy that the normal week of production Turning needs.Under normal production conditions, each monthly average of certain enterprise wants 3 slag lines of offline maintenance to dig Xiu Bao, using the present invention's After method, whole year can save 310,000 yuan of resistance to material expense.
Specific embodiment
The present invention is carried out using following steps:
(1)After ladle is offline, this method misaligns Xiu Bao and overhaul bag is built by laying bricks or stones, only to needing slag line local to dig the ladle that repaiies Built by laying bricks or stones;
(2)Rejected region that flush joint or perps occur in slag line is no longer removed, and only need to remove slag line corroded thin section position;
(3)Using semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing;
(4)Material for repairing material must be identical with ladle liner material;
(5)The cold steel of liner gap remaining, cold slag must thorough cleaning totally and expose the bottom stubble of original masonry;
(6)With semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing be filled in liner occur the position in gap being allowed to fill full Uniformly, urgent with hand hammer, it is allowed to tight, firm, between material for repairing and original masonry, must not has space, finally builds slag line erosion by laying bricks or stones Cross thin dismounting position.
In the above-mentioned methods, step(1)Ladle wall working lining and the intact position of slag line working lining must not be destroyed.
In the above-mentioned methods, step(2)Only slag line local erosion need to be removed crosses thin section position, occurs for slag line working lining flat Seam or the defect such as perps but the also thicker position of remaining refuse to remove.
In the above-mentioned methods, step(3)In semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing be semi-solid material.
In the above-mentioned methods, step(4)In semi-solid preparation ladle liner gap material for repairing and the material of slag line working lining be Consistent, it is all magnesium carbonaceous.
In the above-mentioned methods, step(5)And step(6)It is to ensure that between material for repairing and former masonry that filling combines densification Fasten and be unlikely to loosen, come off, finally build dismounting position by laying bricks or stones, so as to ensure repair efficiency.
The economic benefit of the present invention is as follows:
Under normal production conditions, each monthly average of certain enterprise wants 3 slag lines of offline maintenance to dig Xiu Bao.According to former method, Dig and repair a ladle(Including slag line magnesia carbon brick, bag along brick, bag along material for repairing)17333 yuan of generation expense;Side according to the present invention Method, puts into the slag line magnesia carbon brick that a small amount of semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing can save general 1/2, based on this Calculate, equally dig and repair a ladle(Including semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing, slag line magnesia carbon brick, bag along brick, bag edge Material for repairing)8660 yuan of generation expense;Contrast in front and back, before inventing the new technology after implementing relatively, resistance to material expense saved by each ladle 8673 yuan.Whole year can be saved resistance to material expense and calculate as follows:8673 yuan/bag × 3(Individual bag)/ the moon × 12(Individual month)= 312228 yuan.
By data above as can be seen that before and after the present invention is implemented, being close to or suitable situation in ladle service life Under, produced economic benefit is very significant.

Claims (4)

1. what a kind of electric furnace ladle light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, it is characterised in that:It is carried out using following steps:
A. after ladle is offline, bag and overhaul bag in exclusion, is repaiied, selects to need slag line local to dig the ladle that repaiies;
B. remove slag line and thin section position was corroded, retain the rejected region that flush joint or perps occurs in slag line;
C. semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing is adopted, and material for repairing material is identical with ladle liner material;
D. will be clean to the cold steel of liner gap remaining, cold slag thorough cleaning, and expose the bottom stubble of original masonry;
E. with semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing be filled in liner occur the position in gap being allowed to fill full Uniformly, urgent with hand hammer, it is allowed to tight, firm, between material for repairing and original masonry, must not has space;
F. finally build slag line by laying bricks or stones and corrode thin dismounting position.
2. what electric furnace ladle according to claim 1 light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, it is characterised in that:The step In rapid b, ladle wall work liner and the intact position of slag line work liner are preserved and protected.
3. what electric furnace ladle according to claim 2 light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, it is characterised in that:The step Semi-solid preparation magnesium carbonaceous ladle liner gap material for repairing in rapid c is semi-solid material.
4. what electric furnace ladle according to claim 3 light maintenance or dig was repaiied builds method for repairing and mending by laying bricks or stones, it is characterised in that:The step Semi-solid preparation ladle liner gap material for repairing in rapid d is consistent with the material of slag line liner, is all magnesium carbonaceous.
CN201610947859.2A 2016-10-26 2016-10-26 Constructing and repairing method for minor repair or mend of steel ladle of electric furnace Pending CN106424692A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107234232A (en) * 2017-07-05 2017-10-10 郑州振东科技有限公司 The synthesis repairing method of ladle liner brick
CN107414066A (en) * 2017-09-18 2017-12-01 北京利尔高温材料股份有限公司 A kind of carbon-free ladle wall subsidizes technique
CN107812927A (en) * 2017-10-20 2018-03-20 甘肃酒钢集团科力耐火材料股份有限公司 A kind of circulation utilization method of stainless steel ladle

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JPH04197574A (en) * 1990-11-27 1992-07-17 Kawasaki Steel Corp Method for repairing pouring refractory material into side wall lining in molten metal vessel
JP2002310568A (en) * 2001-04-11 2002-10-23 Shinagawa Refract Co Ltd Method for repairing refractory wall for molten metal container
CN1693287A (en) * 2005-03-29 2005-11-09 葛志华 Process for mfg. and maintaining integral sintered tundish working layer
CN101380674A (en) * 2008-10-06 2009-03-11 中冶宝钢技术服务有限公司 Ladle wall permanent layer repairing method
CN101412109A (en) * 2008-11-27 2009-04-22 莱芜钢铁股份有限公司 Building and laying method capable of extending service lifetime of RH ladle working lining
CN101550016A (en) * 2009-04-28 2009-10-07 莱芜钢铁集团有限公司 Magnesia chrome carbon coating and preparation method thereof
CN101985173A (en) * 2010-07-20 2011-03-16 郑州振东耐磨材料有限公司 Steel ladle lining covering method
CN102941341A (en) * 2012-10-12 2013-02-27 酒泉钢铁(集团)有限责任公司 Method for locally repairing bricked ladle working liner
CN104043815A (en) * 2014-06-30 2014-09-17 河南竹林耐材有限公司 Drill padding maintaining method for steel ladle working lining

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04197574A (en) * 1990-11-27 1992-07-17 Kawasaki Steel Corp Method for repairing pouring refractory material into side wall lining in molten metal vessel
JP2002310568A (en) * 2001-04-11 2002-10-23 Shinagawa Refract Co Ltd Method for repairing refractory wall for molten metal container
CN1693287A (en) * 2005-03-29 2005-11-09 葛志华 Process for mfg. and maintaining integral sintered tundish working layer
CN101380674A (en) * 2008-10-06 2009-03-11 中冶宝钢技术服务有限公司 Ladle wall permanent layer repairing method
CN101412109A (en) * 2008-11-27 2009-04-22 莱芜钢铁股份有限公司 Building and laying method capable of extending service lifetime of RH ladle working lining
CN101550016A (en) * 2009-04-28 2009-10-07 莱芜钢铁集团有限公司 Magnesia chrome carbon coating and preparation method thereof
CN101985173A (en) * 2010-07-20 2011-03-16 郑州振东耐磨材料有限公司 Steel ladle lining covering method
CN102941341A (en) * 2012-10-12 2013-02-27 酒泉钢铁(集团)有限责任公司 Method for locally repairing bricked ladle working liner
CN104043815A (en) * 2014-06-30 2014-09-17 河南竹林耐材有限公司 Drill padding maintaining method for steel ladle working lining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107234232A (en) * 2017-07-05 2017-10-10 郑州振东科技有限公司 The synthesis repairing method of ladle liner brick
CN107414066A (en) * 2017-09-18 2017-12-01 北京利尔高温材料股份有限公司 A kind of carbon-free ladle wall subsidizes technique
CN107812927A (en) * 2017-10-20 2018-03-20 甘肃酒钢集团科力耐火材料股份有限公司 A kind of circulation utilization method of stainless steel ladle
CN107812927B (en) * 2017-10-20 2019-06-25 甘肃酒钢集团科力耐火材料股份有限公司 A kind of circulation utilization method of stainless steel ladle

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