CN108097941A - A kind of ladle and its building method - Google Patents
A kind of ladle and its building method Download PDFInfo
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- CN108097941A CN108097941A CN201711188845.8A CN201711188845A CN108097941A CN 108097941 A CN108097941 A CN 108097941A CN 201711188845 A CN201711188845 A CN 201711188845A CN 108097941 A CN108097941 A CN 108097941A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of ladles, it is different with erosive velocity according to the erosion mechanism in each region inside ladle, bag bottom working lining is arranged to impact zone and non-percussion area, containment wall working lining is arranged to molten bath area, molten bath transition region and slag line area, the resistance to material specification of adjustment package bottom working lining and containment wall working lining accordingly, increase the thickness and height of resistance to material in the faster region of erosive velocity, and form erosion intermediate zone, while so that the erosive velocity for corroding critical regions is retarded, corroding slow region can also be protected indirectly, so that the usage time of the resistance to material entirety of ladle is extended, and then effectively improve ladle bag age.The invention also discloses the building methods of the ladle, and the turn around time of ladle is also increased while promoting ladle bag age, reduces and builds cost by laying bricks or stones up to 48 55 stoves using bag age using the ladle that this method is built by laying bricks or stones.
Description
Technical field
The present invention relates to a kind of metallurgical equipments, and in particular to a kind of ladle and its building method.
Background technology
With the continuous development of metallurgy industry furnace outer refining technology, the live load that ladle undertakes is increasingly heavier.Almost institute
Some molten steel furnace external refining processes must all be completed in ladle.Under allegro smelting condition, the quality of ladle operating mode is right
Whole STEELMAKING PRODUCTION line has very important influence.
The ladle that existing building method is built by laying bricks or stones, service life averagely only have 42 stoves to 44 stoves, and a slag line uses average 24
Stove or so, slag line residual thickness averagely only have 66.15mm, and for secondary slag line using average 20.5 stoves, slag line is averaged residual thickness only
There is 55.7mm, well below requiring line.This ladle can only meet relatively low requirement, be present with sometimes in circular flow
Concentrate offline, ladle supply is suddenly nervous, and production is made to be absorbed in passive situation.
The content of the invention
Goal of the invention：The defects of in order to overcome the prior art, the present invention provides a kind of ladle, the use bag ages of the ladle
It is all significantly lengthened with turn around time.
It is a further object of the present invention to provide a kind of building method of ladle, this method can be manufactured with longer using bag
Age and longer turn around time ladle.
Technical solution：A kind of ladle of the present invention, including bag bottom and containment wall, the bag bottom include bag bottom permanent layer and
Bottom working lining is wrapped, the containment wall includes insulating layer, containment wall permanent layer and containment wall working lining, and the bag bottom working lining includes impact
Area and non-percussion area, impact zone are located in the middle part of bag bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is more than non-punching
Hit the height in area；The containment wall working lining includes the bottom-up molten bath area set gradually, molten bath transition region and slag line area, institute
The thickness for stating molten bath transition region is more than the thickness in molten bath area, and the thickness in slag line area is more than or equal to the thickness of molten bath transition region.
Wherein, the slag line area includes slag line reinforcement area and slag line buffering area, and the slag line buffering area is located at slag line reinforcement
The upper and lower ends in area, the erosion that slag line strengthens area is the most serious, and described slag line strengthens the thickness of the thickness more than slag line buffering area in area
Degree；Set slag line buffering area builds thickness by laying bricks or stones as 220~230mm, and the thickness of building by laying bricks or stones that slag line strengthens area is 240~250mm.
Each region erosion mechanism causes erosive velocity different there are larger difference in the containment wall working lining, slag line area by
The most serious, erosion speed is corroded in the influence of various physical-chemical reactions under thermal shock, the chemical erosion of slag and vacuum state
Degree is most fast, and molten bath transition region and molten bath area are mainly by the mechanical erosion of molten steel when using and in using that rapid heat cycle is influenced,
Gradually slow down relatively.So the thickness of building by laying bricks or stones for setting molten bath area is 200~210mm, molten bath transition region builds thickness by laying bricks or stones as 210
~220mm.
And for wrapping bottom working lining, impact zone is the position for directly bearing molten steel impact, and molten steel rushes non-percussion area
Brush corrode it is then relatively weak, so, in order to reduce cost while meeting the technology requirement for extending bag age, impact zone is set
Build height by laying bricks or stones as 280~300mm, non-percussion area builds height by laying bricks or stones as 190~200mm.
The containment wall permanent layer includes outside permanent layer and inside permanent layer, and outside permanent layer is arranged on by insulating layer one
Side, inside permanent layer are arranged on by containment wall working lining one side；The thickness of the inside permanent layer is more than the thickness of outside permanent layer.
Containment wall permanent layer is arranged to two layers, adds solidness, effectively ladle is avoided to run through, and improves the security of ladle；Further, since
Inside permanent layer ratio outside permanent layer is more leaned on inside ladle, radian bigger, and the static pressure born more close to the inner portion is bigger, and inside is forever
Long layer should be than intermediate permanent layer intensity bigger；So in order to meet the requirement of intensity and radian, the thickness of inside permanent layer is set
Degree is more than the thickness of outside permanent layer.
A kind of building method of ladle, comprises the following steps：
(1) adhesive insulating layer, the adhesive insulating layer on the ladle inner wall after tearing open entirely；
(2) bag bottom permanent layer is poured, in ladle bottom, bag bottom permanent layer is poured with castable；
(3) containment wall permanent layer is built by laying bricks or stones, including building outside permanent layer and inside permanent layer by laying bricks or stones successively；
(4) build by laying bricks or stones bag bottom working lining, bag bottom permanent layer on build by laying bricks or stones bag bottom working lining, bag bottom working lining include impact zone and
Non-percussion area, impact zone are located in the middle part of bag bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is more than non-percussion area
Height；
(5) containment wall working lining is built by laying bricks or stones, successively the fissure of displacement builds containment wall working lining by laying bricks or stones from bottom to top；Containment wall working lining include from down toward
On the molten bath area, molten bath transition region and the slag line area that arrange successively；The thickness of the molten bath transition region is more than the thickness in molten bath area,
The thickness in slag line area is more than or equal to the thickness of molten bath transition region.
Advantageous effect：The present invention is according to the erosion mechanism in each region inside ladle and erosive velocity difference, adjustment package basic skill or training
Make the resistance to material specification of layer and containment wall working lining, increase the thickness and height of resistance to material in the faster region of erosive velocity, and formed and invaded
Lose intermediate zone so that corrode critical regions erosive velocity it is retarded while, corroding slow region can also obtain indirectly
Protection, so that the usage time of the resistance to material entirety of ladle is extended, and then effectively improves ladle bag age.Steel of the present invention
The building method of bag, the ladle built by laying bricks or stones up to 48-55 stoves, also increase the week of ladle using bag age while promoting ladle bag age
It the turn-week phase, reduces and builds cost by laying bricks or stones.
Description of the drawings
Fig. 1 is the ladle cross-sectional view that the present invention is built by laying bricks or stones.
Specific embodiment
Below in conjunction with the accompanying drawings, exemplified by building 110 tons of ladles by laying bricks or stones, the achievable mode of the present invention is described further.
Such as Fig. 1, first adhesive insulating layer 2 in the ladle 100 after tearing open entirely, is close to inner wall binding agent adhesive insulating layer 2,
Insulating layer 2 is uniformly beaten with instruments such as hand hammers, it is made to combine closely with inner wall.It compares for silicates thermal insulation board, keeps the temperature
The better heat preservation of 2 Ceramics thermal insulation board of layer, 2 thickness control of insulating layer is in 10mm, i.e. ceramic insulation thickness of slab 10mm.
Bag bottom permanent layer 1 is poured in ladle bottom again, because high temperature strength is big after corundum pouring material solidification, Neng Gouxian
The security for improving bag bottom is write, so pouring bag bottom permanent layer 1 using corundum pouring material, the thickness that pours of bag bottom permanent layer is
110mm, and it is levelling with castable.
Then containment wall permanent layer is built by laying bricks or stones, containment wall permanent layer includes outside permanent layer 3 and inside permanent layer 4.Outside permanent layer 3
High-alumina brick or magnesia carbon brick material are used with inside permanent layer 4, wherein magnesia carbon brick is better, it is contemplated that cost, this reality
It applies and building materials of the high-alumina brick as containment wall permanent layer is used in example.It first builds outside permanent layer 3 by laying bricks or stones, is close to 2 outer wall of insulating layer, by
It is upward to wrap bottom permanent layer 1, uses wet block method using magnesia chamotte as gap filler, successively the fissure of displacement builds outside permanent layer 3 by laying bricks or stones to bag edge
Lower section after each layer is built by laying bricks or stones, is beaten with instrument by brick jam-packed and fixation；During concrete operations, can every layer thing south
Northern four positions are previously inserted the chock of positive inverse taper, and each two pieces of point, wherein inverted trapezoidal chock reserves certain altitude, treats every layer
Build by laying bricks or stones when finishing, it is good using buffer pad, and with sledgehammer impact by every layer of brick jam-packed and fixation, and so on successively build by laying bricks or stones to bag
Along lower section, outside permanent layer 3 builds thickness by laying bricks or stones as 30mm, i.e. high-alumina brick thickness 30mm.4 thickness requirement 50mm of inside permanent layer, institute
To use thickness 50mm high alumina brick masonries, it is close to the outside permanent layer 3 laid, uses wet block method using magnesia chamotte as joint filling
By wrapping bottom permanent layer 1, successively the fissure of displacement is built by laying bricks or stones upwards for agent；It is horizontal between inside permanent layer 4 and the brick and brick of outside permanent layer 3 when building by laying bricks or stones
Brick-on-end seam, which staggers, builds by laying bricks or stones；After every layer is built by laying bricks or stones, beaten with instrument by brick jam-packed and fixation；Specific operation is also in every layer
The position of the four corners of the world four be previously inserted the chock of positive inverse taper, each two pieces of point, wherein inverted trapezoidal chock reserves certain height
Degree, treat every layer build by laying bricks or stones after, good using buffer pad, and with sledgehammer impact by this layer of high-alumina brick jam-packed and fixation, class successively
It pushes away, successively builds by laying bricks or stones upwards to bag along lower section.
After permanent layer is built by laying bricks or stones, insert ventilating seat brick and pocket block and ajust, with corundum pouring material by brick cup with
Gap consolidates between wrapping bottom permanent layer 1, and levelling with castable, then starts to build working lining by laying bricks or stones.
First build bag bottom working lining by laying bricks or stones, bag bottom working lining is built by laying bricks or stones using aluminium-magnesia carbon brick or magnesia carbon brick, build by laying bricks or stones height for 190~
300mm；Wrapping bottom working lining includes non-percussion area 5 and the impact zone 6 in the middle part of bag bottom, and non-percussion area 5 is looped around impact zone 6
Around.Because molten steel directly washes away, the erosive velocity of impact zone 6 is far longer than the erosive velocity in non-percussion area 5, so setting
The height of building by laying bricks or stones built height by laying bricks or stones and be more than non-percussion area 6 of impact zone 6, impact zone build height by laying bricks or stones as 280~300mm, non-percussion
Area builds height by laying bricks or stones as 190~200mm.During concrete operations, on the basis of at pocket block 50mm, built around by center
Build until containment wall permanent layer, and with gap≤50mm of containment wall permanent layer, gap is stoppered with magnesia carbon brick, and is poured with corundum
Material feeding consolidates.Wrap 40~50mm of clearance requirement between bottom working lining and pocket block and air brick, between poured with corundum
Material feeding ramming is closely knit.
It builds containment wall working lining by laying bricks or stones again, before building by laying bricks or stones, the joint sealing material of thickness >=20mm of adhesion in containment wall permanent layer is cleared up dry
Only.Containment wall working lining builds thickness by laying bricks or stones as 200~250mm.Containment wall working lining include arrange successively from bottom to top molten bath area 7,
Molten bath transition region 8 and slag line area；Slag line area is molten steel surface slag region, holds the body of molten steel when building by laying bricks or stones according to ladle volume and Sheng
Product is comprehensive to be determined；Molten bath area 7 and molten bath transition region 8 are built by laying bricks or stones using magnesia-alumina-carbon brick or magnesia carbon brick, consider that cost needs, in this example
It is built by laying bricks or stones using magnesia-alumina-carbon brick；Molten bath area 7 builds thickness by laying bricks or stones as 200~210mm, molten bath transition region 8 build by laying bricks or stones thickness for 210~
220mm, and the thickness of molten bath transition region 8 is more than the thickness in molten bath area 7.Slag line area is due to being subject to the chemistry of thermal shock, slag to invade
The influence of various physical-chemical reactions under erosion and vacuum state is the most fast region of containment wall working lining erosive velocity, particularly
It is particularly acute near liquid steel level, so slag line area is built by laying bricks or stones using the optimal magnesia carbon brick of corrosion-resistant property.Magnesia carbon brick is using high
Pure magnesia raw material adds high-efficiency anti-oxidation agent, using 1000 tons of brick machine compression mouldings, so that its resistance to deteriorates and scour resistance
Can be stronger, it can effectively resist slag erosion.And when building by laying bricks or stones, the slag line that slag line is divided near liquid steel level is strengthened into area 10,
And slag line strengthens the slag line buffering area 9 of 10 upper and lower ends of area, the thickness of building by laying bricks or stones that slag line strengthens area 10 is more than slag line buffering area 9
Build thickness by laying bricks or stones, set slag line buffering area 9 builds thickness by laying bricks or stones as 220~230mm, slag line strengthen area 10 build by laying bricks or stones thickness for 240~
250mm.During concrete operations, built by laying bricks or stones since the lower position of the mouth of a river, it is upwards and tight by wrapping bottom working lining using laid dry method when building by laying bricks or stones
Patch containment wall permanent layer is built by laying bricks or stones.It chooses and meets the magnesia-alumina-carbon brick of design specification and bottom-up successively build molten bath area 7 and molten bath transition by laying bricks or stones
Area 8；Again slag line area is successively built by laying bricks or stones upwards with magnesia carbon brick up to specification；Bao Kou positions use the bag mouth special form brick of magnesia carbon brick material
It builds by laying bricks or stones.Working lining builds requirement by laying bricks or stones：Magnesia carbon brick gap≤1.0 millimeter, bag mouth special shaped brick gap≤2.0 millimeter.And same layer is built by laying bricks or stones
Process uses phase same material brick, adjacent magnesia carbon brick mismatch≤20 millimeter, magnesia carbon brick side/corner defect≤5 millimeter.
Then floater guide block plate is welded in bag mouth, floater guide block plate selects suitable floater guide block plate according to steel ladle edge to distance between bag mouth special shaped brick
Compress bag mouth special shaped brick, one floater guide block plate of every block of bag mouth special shaped brick.
When replacing slag line for non-brand-new ladle, that is, the ladle of secondary slag line, only it need to build slag line area by laying bricks or stones again, at this time slag
Line buffering area 9 builds thickness by laying bricks or stones as 178~210mm, and the thickness of building by laying bricks or stones that slag line strengthens area 10 is 220~230mm.
Method described above builds three ladle L1~L3 by laying bricks or stones, and each steel ladle working layer builds thickness difference by laying bricks or stones, and compares ladle
L4, the technical indicator such as table 1 of each ladle：
1 difference of table builds the ladle technical indicator of thickness by laying bricks or stones
As seen from the above table, ladle of the invention averagely wraps age as 51 stoves or so, compared to existing using bag age up to 48-55 stoves
There is technology to be dramatically increased using bag age.In addition, the comparison according to L1~L3 and L4, it can be seen that by the portion that erosive velocity is slower
The thickness of building by laying bricks or stones of position suitably reduces, and can still ensure the use bag age of ladle.So according to the difference of erosive velocity, according to this hair
Bright building method adjusts the resistance to material specification in each region, both can guarantee ladle bag age, and also can effectively reduce and build cost by laying bricks or stones.
Claims (10)
1. a kind of ladle, including bag bottom and containment wall, the bag bottom, which includes bag bottom permanent layer and bag bottom working lining, the containment wall, to be included
Insulating layer, containment wall permanent layer and containment wall working lining, which is characterized in that the bag bottom working lining includes impact zone and non-percussion
Area, impact zone are located in the middle part of bag bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is more than the height in non-percussion area
Degree；The containment wall working lining includes the bottom-up molten bath area set gradually, molten bath transition region and slag line area, the molten bath mistake
The thickness for crossing area is more than the thickness in molten bath area, and the thickness in slag line area is more than or equal to the thickness of molten bath transition region.
2. ladle according to claim 1, which is characterized in that the slag line area includes slag line and strengthens area and slag line buffering
Area, the slag line buffering area are located at the upper and lower ends that slag line strengthens area, and slag line strengthens the thickness of the thickness more than slag line buffering area in area
Degree.
3. ladle according to claim 2, which is characterized in that the thickness of slag line buffering area is 220~230mm, and slag line adds
The thickness in strong area is 240~250mm.
4. ladle according to claim 1, which is characterized in that the thickness in the molten bath area be 200~210mm, molten bath mistake
The thickness for crossing area is 210~220mm.
5. ladle according to claim 1, which is characterized in that the height of the impact zone be 280~300mm, non-percussion
The height in area is 190~200mm.
6. ladle according to claim 1, which is characterized in that the containment wall permanent layer includes outside permanent layer and inside forever
Long layer, outside permanent layer are arranged on by insulating layer one side, and inside permanent layer is arranged on by containment wall working lining one side；The inside is forever
The thickness of long layer is more than the thickness of outside permanent layer.
7. according to the building method of any ladles of claim 1-6, which is characterized in that comprise the following steps：
(1) adhesive insulating layer, the adhesive insulating layer on the ladle inner wall after tearing open entirely；
(2) bag bottom permanent layer is poured, in ladle bottom, bag bottom permanent layer is poured with castable；
(3) containment wall permanent layer is built by laying bricks or stones, including building outside permanent layer and inside permanent layer by laying bricks or stones successively；
(4) build bag bottom working lining by laying bricks or stones, build bag bottom working lining by laying bricks or stones in bag bottom permanent layer, bag bottom working lining includes impact zone and non-punching
Area is hit, impact zone is located in the middle part of bag bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is more than the height in non-percussion area
Degree；
(5) containment wall working lining is built by laying bricks or stones, successively the fissure of displacement builds containment wall working lining by laying bricks or stones from bottom to top；Containment wall working lining include from bottom to top according to
Molten bath area, molten bath transition region and the slag line area of secondary arrangement；The thickness of the molten bath transition region is more than the thickness in molten bath area, slag line
The thickness in area is more than or equal to the thickness of molten bath transition region.
8. the building method of ladle according to claim 7, which is characterized in that it is permanent to build outside in the step (3) by laying bricks or stones
Layer is on the inside of insulating layer, and upward by wrapping bottom permanent layer, using wet block method, successively the fissure of displacement is built by laying bricks or stones to bag along lower section；
Build by laying bricks or stones inside permanent layer be on the inside of the outside permanent layer laid, it is successively wrong upwards by wrapping bottom permanent layer using wet block method
Seam is built by laying bricks or stones；When building by laying bricks or stones, vertical and horizontal brickwork joint staggers between inside permanent layer and the brick and brick of outside permanent layer.
9. the building method of ladle according to claim 7, which is characterized in that the height of impact zone in the step (4)
It spends for 280~300mm, the height in non-percussion area is 190~200mm.
10. the building method of ladle according to claim 7, which is characterized in that the block in molten bath area in the step (5)
Thickness is built as 200~210mm, molten bath transition region builds thickness by laying bricks or stones as 210~220mm, and the slag line area includes slag line buffering area
Strengthen area with slag line；The slag line buffering area is located at the upper and lower ends that slag line strengthens area, and the thickness of building by laying bricks or stones that slag line strengthens area is more than
Slag line buffering area builds thickness by laying bricks or stones；The slag line buffering area builds thickness by laying bricks or stones as 220~230mm, and slag line reinforcement area builds thickness by laying bricks or stones
It spends for 240~250mm.
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| CN108856689A (en) * | 2018-07-05 | 2018-11-23 | 郑州振东科技有限公司 | A kind of arc prefabricated section and the method using arc prefabricated section masonry permanent ladle layer |
| CN109304457A (en) * | 2018-10-19 | 2019-02-05 | 南京联合荣大工程材料有限责任公司 | The production method of steel ladle edge prefabricated component |
| CN109865827A (en) * | 2019-04-01 | 2019-06-11 | 山东钢铁集团日照有限公司 | A method of improving ladle slag line brick service life |
| CN112238218A (en) * | 2019-07-16 | 2021-01-19 | 新疆八一钢铁股份有限公司 | Tundish building method for building refractory materials with different heights on inner wall |
| CN112264612A (en) * | 2020-09-30 | 2021-01-26 | 江苏沙钢集团有限公司 | Steel ladle masonry structure and steel ladle using method |
| CN112643018A (en) * | 2020-12-09 | 2021-04-13 | 攀枝花钢城集团有限公司 | Method for building long-life ladle bottom of ladle |
| CN115301936A (en) * | 2022-08-08 | 2022-11-08 | 阳春新钢铁有限责任公司 | Steel ladle bottom building process capable of reducing steel ladle residual steel |
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| CN108856689A (en) * | 2018-07-05 | 2018-11-23 | 郑州振东科技有限公司 | A kind of arc prefabricated section and the method using arc prefabricated section masonry permanent ladle layer |
| CN109304457A (en) * | 2018-10-19 | 2019-02-05 | 南京联合荣大工程材料有限责任公司 | The production method of steel ladle edge prefabricated component |
| CN109865827A (en) * | 2019-04-01 | 2019-06-11 | 山东钢铁集团日照有限公司 | A method of improving ladle slag line brick service life |
| CN112238218A (en) * | 2019-07-16 | 2021-01-19 | 新疆八一钢铁股份有限公司 | Tundish building method for building refractory materials with different heights on inner wall |
| CN112264612A (en) * | 2020-09-30 | 2021-01-26 | 江苏沙钢集团有限公司 | Steel ladle masonry structure and steel ladle using method |
| CN112264612B (en) * | 2020-09-30 | 2022-01-18 | 江苏沙钢集团有限公司 | Steel ladle masonry structure and steel ladle using method |
| CN112643018A (en) * | 2020-12-09 | 2021-04-13 | 攀枝花钢城集团有限公司 | Method for building long-life ladle bottom of ladle |
| CN115301936A (en) * | 2022-08-08 | 2022-11-08 | 阳春新钢铁有限责任公司 | Steel ladle bottom building process capable of reducing steel ladle residual steel |
| CN115301936B (en) * | 2022-08-08 | 2024-03-19 | 阳春新钢铁有限责任公司 | Ladle bottom masonry process for reducing residual steel of ladle |
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|---|---|
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