CN108097941B - A kind of ladle and its building method - Google Patents
A kind of ladle and its building method Download PDFInfo
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- CN108097941B CN108097941B CN201711188845.8A CN201711188845A CN108097941B CN 108097941 B CN108097941 B CN 108097941B CN 201711188845 A CN201711188845 A CN 201711188845A CN 108097941 B CN108097941 B CN 108097941B
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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, according to the erosion mechanism in region each inside ladle and erosive velocity difference, packet 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, to make the resistance to material of ladle is whole to be extended using the time, and then effectively improve ladle packet age.The invention also discloses the building method of the ladle, the ladle built using this method, up to 48-55 furnace, is also increased the turn around time of ladle while promoting ladle packet age, reduces masonry cost using packet age.
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 technique
With the continuous development of metallurgy industry furnace outer refining technology, the workload 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 condition is right
Whole STEELMAKING PRODUCTION line has very important influence.
The ladle that existing building method is built, service life averagely only have 42 furnaces to 44 furnaces, and a slag line uses average 24
Furnace or so, slag line residual thickness averagely only have 66.15mm, and for secondary slag line using average 20.5 furnaces, slag line is averaged residual thickness only
There is 55.7mm, well below requiring line.This ladle can only meet lower requirement, will appear in circular flow sometimes
Concentrate offline, ladle supply is suddenly nervous, and production is made to fall into passively situation.
Summary of the invention
Goal of the invention: in order to overcome the drawbacks of the prior art, the present invention provides a kind of ladle, the use packet 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 manufacture, and there is longer use to wrap
Age and longer turn around time ladle.
Technical solution: a kind of ladle of the present invention, including packet bottom and containment wall, the packet bottom include packet bottom permanent layer with
Bottom working lining is wrapped, the containment wall includes insulating layer, containment wall permanent layer and containment wall working lining, and the packet bottom working lining includes impact
Area and non-percussion area, impact zone are located in the middle part of packet bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is greater 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 greater 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 that slag line reinforces area and slag line buffer area, and the slag line buffer area is located at slag line reinforcement
The upper and lower ends in area, the erosion that slag line reinforces area is the most serious, and the thickness that described slag line reinforces area is greater than the thickness of slag line buffer area
Degree；The masonry of slag line buffer area is set with a thickness of 220~230mm, slag line reinforces the masonry in area with a thickness of 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
Spend 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 masonry in setting molten bath area is with a thickness of 200~210mm, the masonry of molten bath transition region is with a thickness of 210
~220mm.
And for wrapping bottom working lining, impact zone is the direct position for bearing molten steel impact, and molten steel rushes non-percussion area
Brush erosion is then relatively weak, so, cost is reduced while meeting the technical requirements for extending packet age, impact zone is set
Masonry height be 280~300mm, the masonry height in non-percussion area is 190~200mm.
The containment wall permanent layer includes outside permanent layer and inside permanent layer, and insulating layer one is being leaned in permanent layer setting in outside
Containment wall working lining side is being leaned in side, the setting of inside permanent layer；The thickness of the inside permanent layer is greater than the thickness of outside permanent layer.
Containment wall permanent layer is arranged to two layers, increases solidness, effectively ladle is avoided to run through, and improves the safety of ladle；In addition, due to
Inside permanent layer ratio outside permanent layer is more leaned on inside ladle, and radian is bigger, and the static pressure born more close to the inner portion is bigger, and inside is forever
Long layer should be bigger than intermediate permanent layer intensity；So in order to meet the requirement of intensity and radian, the thickness of setting inside permanent layer
Degree is greater than the thickness of outside permanent layer.
A kind of building method of ladle, comprising the following steps:
(1) adhesive insulating layer, the adhesive insulating layer on the ladle inner wall after tearing open entirely；
(2) packet bottom permanent layer is poured, in ladle bottom, pours packet bottom permanent layer with castable；
(3) containment wall permanent layer is built, including successively builds outside permanent layer and inside permanent layer；
(4) build packet bottom working lining, packet bottom permanent layer on build packet bottom working lining, packet bottom working lining include impact zone and
Non-percussion area, impact zone are located in the middle part of packet bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is greater than non-percussion area
Height；
(5) containment wall working lining is built, the layer-by-layer fissure of displacement builds containment wall working lining 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 successively arrange；The thickness of the molten bath transition region is greater 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.
The utility model has the advantages that erosion mechanism and erosive velocity difference, adjustment package basic skill or training of the present invention according to region each inside ladle
The resistance to material specification for making layer and containment wall working lining increases the thickness and height of resistance to material in the faster region of erosive velocity, and is formed and invaded
Intermediate zone is lost, while so that the erosive velocity for corroding critical regions is retarded, corroding slow region can also obtain indirectly
Protection to make the resistance to material of ladle is whole to be extended using the time, and then effectively improves ladle packet age.Steel of the present invention
The building method of packet, the ladle of masonry, up to 48-55 furnace, also increase the week of ladle while promoting ladle packet age using packet age
The turn-week phase reduces masonry cost.
Detailed description of the invention
Fig. 1 is the ladle the schematic diagram of the section structure that the present invention is built.
Specific embodiment
With reference to the accompanying drawing, for building 110 tons of ladles, achievable mode of the invention is described further.
Such as Fig. 1, first adhesive insulating layer 2 is close to inner wall binder adhesive insulating layer 2 in the ladle 100 after tearing open entirely,
Insulating layer 2 is uniformly beaten with tools such as hand hammers, it is made to combine closely with inner wall.It compares for silicates thermal insulation board, keeps the temperature
The heat insulation effect of 2 Ceramics thermal insulation board of layer is more preferable, and 2 thickness control of insulating layer is in 10mm, i.e. ceramic insulation plate thickness 10mm.
Packet bottom permanent layer 1 is poured in ladle bottom again, because high temperature strength is big after corundum pouring material solidification, Neng Gouxian
Write improve packet bottom safety, so using corundum pouring material pour packet bottom permanent layer 1, packet bottom permanent layer pour with a thickness of
110mm, and it is levelling with castable.
Then containment wall permanent layer is built, 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 the better effect of magnesia carbon brick, it is contemplated that cost, this reality
It applies in example using building materials of the high-alumina brick as containment wall permanent layer.Outside permanent layer 3 is first built, 2 outer wall of insulating layer is close to, by
It wraps bottom permanent layer 1 upwards, uses wet block method using magnesia chamotte as gap filler, the layer-by-layer fissure of displacement builds outside permanent layer 3 to packet edge
It is beaten with tool by brick jam-packed and fixation after each layer builds lower section；When specific operation, can every layer thing south
Northern four positions are previously inserted the chock of positive inverse taper, and two pieces of each point, wherein inverted trapezoidal chock reserves certain altitude, to every layer
It is good using buffer pad when masonry finishes, and with sledgehammer impact by every layer of brick jam-packed and fixation, and so on successively build to wrapping
Along lower section, the masonry of outside permanent layer 3 is with a thickness of 30mm, i.e. high-alumina brick thickness 30mm.4 thickness requirement 50mm of inside permanent layer, institute
To use thickness 50mm high alumina brick masonry, it is close to the outside permanent layer 3 laid, uses wet block method using magnesia chamotte as joint filling
By packet bottom permanent layer 1, successively the fissure of displacement is built upwards for agent；It is horizontal between inside permanent layer 4 and the brick and brick of outside permanent layer 3 when masonry
Brick-on-end stitches the masonry that is staggered；After every layer builds, beaten with tool 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, two pieces of each point, wherein inverted trapezoidal chock is reserved certain high
Degree, good using buffer pad after being built to every layer, and with sledgehammer impact by this layer of high-alumina brick jam-packed and fixation, successively class
It pushes away, is successively built upwards to packet along lower section.
After permanent layer is built, be placed in ventilating seat brick and pocket block and ajust, with corundum pouring material by brick cup with
Gap tamping between bottom permanent layer 1 is wrapped, and levelling with castable, then starts to build working lining.
First build packet bottom working lining, packet bottom working lining is built using aluminium-magnesia carbon brick or magnesia carbon brick, build height for 190~
300mm；Packet bottom working lining includes non-percussion area 5 and the impact zone 6 in the middle part of packet 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 masonry height of impact zone 6 is greater than the masonry height in non-percussion area 6, and the masonry height of impact zone is 280~300mm, non-percussion
The masonry height in area is 190~200mm.When specific operation, it on the basis of at pocket block 50mm, is built around by center
It builds up to containment wall permanent layer, and gap≤50mm with containment wall permanent layer, is stoppered gap with magnesia carbon brick, and poured with corundum
Material feeding tamping.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 again, before masonry, thickness >=20mm joint sealing material of adhesion in containment wall permanent layer is cleared up dry
Only.The masonry of containment wall working lining is with a thickness of 200~250mm.Containment wall working lining include the molten bath area 7 successively to arrange from bottom to top,
Molten bath transition region 8 and slag line area；Slag line area is molten steel surface slag region, according to ladle volume and the body of Sheng Rong molten steel when masonry
Product is comprehensive to be determined；Molten bath area 7 and molten bath transition region 8 are built using magnesia-alumina-carbon brick or magnesia carbon brick, consider that cost needs, in this example
It is built using magnesia-alumina-carbon brick；The masonry in molten bath area 7 with a thickness of 200~210mm, the masonry of molten bath transition region 8 with a thickness of 210~
220mm, and the thickness of molten bath transition region 8 is greater than the thickness in molten bath area 7.Slag line area by the chemistry of thermal shock, slag due to being invaded
The influence of various physical-chemical reactions under erosion and vacuum state is the most fast region of containment wall working lining erosive velocity, especially
It is particularly acute near liquid steel level, so slag line area is built 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 be made resistance to deteriorate and scour resistance
Can be stronger, it can effectively resist steel slag erosion.And when building, slag line is divided into the slag line near liquid steel level and reinforces area 10,
And slag line reinforces the slag line buffer area 9 of 10 upper and lower ends of area, the thickness that builds that slag line reinforces area 10 is greater than slag line buffer area 9
Build thickness, the masonry of slag line buffer area 9 be set with a thickness of 220~230mm, slag line reinforce the masonry in area 10 with a thickness of 240~
250mm.When specific operation, it is built since the lower position of the mouth of a river, laid dry method is used when masonry, it is upwards and tight by packet bottom working lining
Containment wall permanent layer is pasted to build.Choose the bottom-up layer-by-layer masonry molten bath area 7 of magnesia-alumina-carbon brick and the molten bath transition for meeting design specification
Area 8；Slag line area is successively built upwards with magnesia carbon brick up to specification again；The position Bao Kou uses the packet mouth special form brick of magnesia carbon brick material
It builds.Working lining, which is built, to be required: magnesia carbon brick gap≤1.0 millimeter, packet mouth special shaped brick gap≤2.0 millimeter.And same layer is built
Process uses 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 packet mouth, floater guide block plate selects suitable floater guide block plate to distance between packet mouth special shaped brick according to steel ladle edge
Compress packet mouth special shaped brick, one floater guide block plate of every block of packet mouth special shaped brick.
When for non-completely new ladle replacement slag line, that is, the ladle of secondary slag line, slag line area only need to be built again, at this time slag
For the masonry of line buffer area 9 with a thickness of 178~210mm, slag line reinforces the masonry in area 10 with a thickness of 220~230mm.
Three ladle L1~L3 are in the above way built, the masonry thickness of each steel ladle working layer is different, and compares ladle
L4, the technical indicator of each ladle such as table 1:
The different ladle technical indicators for building thickness of table 1
As seen from the above table, ladle of the invention is using packet age up to 48-55 furnace, and averagely packet age is 51 furnaces or so, compared to existing
There is technology to dramatically increase using packet age.In addition, according to the comparison of L1~L3 and L4, it can be seen that by the portion that erosive velocity is slower
The masonry thickness of position suitably reduces, and can still ensure the use packet 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 packet age, masonry cost can also be effectively reduced.
Claims (1)
1. a kind of ladle, including packet bottom and containment wall, the packet bottom includes packet bottom permanent layer and packet bottom working lining, the containment wall include
Insulating layer, containment wall permanent layer and containment wall working lining, which is characterized in that packet bottom working lining includes impact zone and non-percussion
Area, impact zone are located in the middle part of packet bottom, and non-percussion area is looped around around impact zone, and the height of impact zone is greater 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 greater 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；The slag line area packet
It includes slag line and reinforces area and slag line buffer area, the slag line buffer area is located at the upper and lower ends that slag line reinforces area, and slag line reinforces area
Thickness is greater than the thickness of slag line buffer area；The containment wall permanent layer includes outside permanent layer and inside permanent layer, outside permanent layer
Insulating layer side is being leaned in setting, and containment wall working lining side is being leaned in permanent layer setting in inside；The thickness of the inside permanent layer is greater than
The thickness of outside permanent layer；
The ladle is built using following steps:
(1) ceramic heat-insulation board of 10mm thickness adhesive insulating layer: is pasted on the ladle inner wall after tearing open entirely as insulating layer；
(2) it pours packet bottom permanent layer: in ladle bottom, pouring 110mm thickness with corundum pouring material, form packet bottom permanent layer,
And it is levelling with castable；
(3) containment wall permanent layer is built: including successively building outside permanent layer and inside permanent layer using high-alumina brick or magnesia carbon brick:
(3.1) it is close to insulating layer outer wall, it is upward by packet bottom permanent layer, use wet block method using magnesia chamotte as gap filler, successively
The fissure of displacement builds outside permanent layer and extremely wraps along lower section, preparatory each layer of the position of the four corners of the world four when building outside permanent layer
It is inserted into the chock of positive inverse taper, two pieces of each point, wherein inverse taper chock is reserved certain altitude and made after each layer builds
It is good with buffer pad, inverse taper chock is beaten by brick jam-packed and fixation with tool；
(3.2) be close to the outside permanent layer that lays, use wet block method using magnesia chamotte as gap filler from wrap bottom permanent layer to
The upper layer-by-layer fissure of displacement builds inside permanent layer and extremely wraps along lower section, and vertical and horizontal brick between inside permanent layer and the brick and brick of outside permanent layer
The masonry that is staggered is stitched, when building inside permanent layer, is previously inserted the chock of positive inverse taper each layer of the position of the four corners of the world four,
Two pieces of each point, wherein inverse taper chock reserves certain altitude, good using buffer pad after each layer builds, and uses tool
Inverse taper chock is beaten by brick jam-packed and fixation；
(3.3) after permanent layer are built, ventilating seat brick and pocket block are placed in and is ajusted, with corundum pouring material by brick cup with
Gap tamping between the permanent layer of bottom is wrapped, and levelling with castable；
(4) it builds packet bottom working lining: packet bottom working lining, impact being built using aluminium-magnesia carbon brick or magnesia carbon brick in packet bottom permanent layer
The masonry height in area is 280~300mm, and the masonry height in non-percussion area is 190~200mm；When masonry, apart from pocket block
On the basis of at 50mm, builds gap≤50mm until with containment wall permanent layer around by center, is stoppered gap with magnesia carbon brick,
And it is consolidated with corundum pouring material；40~50mm of gap between bottom working lining and pocket block and ventilating seat brick is wrapped, between
It is closely knit with corundum pouring material ramming；
(5) it builds containment wall working lining: before masonry, thickness >=20mm joint sealing material of adhesion in containment wall permanent layer being cleaned out；
The layer-by-layer fissure of displacement builds containment wall working lining from bottom to top: when masonry, using magnesia-alumina-carbon brick or magnesia carbon brick build molten bath area and
Molten bath transition region, with a thickness of 200~210mm, the masonry of molten bath transition region uses the masonry in molten bath area with a thickness of 210~220mm
High-purity magnesia raw material adds high-efficiency anti-oxidation agent and builds slag line area, slag line using the magnesia carbon brick of 1000 tons of brick machine compression moulding
For the masonry of buffer area with a thickness of 220~230mm, slag line reinforces the masonry in area with a thickness of 240~250mm；
Specifically, build since the lower position of the mouth of a river, when masonry, uses laid dry method, upwards and is close to containment wall by packet bottom working lining
Permanent layer is built, packet mouth abnormal shape brick masonry of the position Bao Kou using magnesia carbon brick material, magnesia carbon brick gap≤1.0 millimeter, and packet mouth is different
Shape brick gap≤2.0 millimeter, and same layer building process uses same material brick, adjacent magnesia carbon brick mismatch≤20 millimeter, magnesium
Carbon brick side/corner defect≤5 millimeter；
Packet mouth welds floater guide block plate, and floater guide block plate selects suitable floater guide block plate compression packet mouth different according to steel ladle edge to distance between packet mouth special shaped brick
Shape brick, one floater guide block plate of every block of packet mouth special shaped brick.
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| CN201711188845.8A CN108097941B (en) | 2017-11-23 | 2017-11-23 | A kind of ladle and its building method |
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| CN201711188845.8A CN108097941B (en) | 2017-11-23 | 2017-11-23 | A kind of ladle and its building method |
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| CN108097941B true CN108097941B (en) | 2019-10-25 |
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| CN112024861A (en) * | 2020-08-06 | 2020-12-04 | 首钢京唐钢铁联合有限责任公司 | KR desulfurization ladle inside lining |
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|---|---|---|---|---|
| CN112024861A (en) * | 2020-08-06 | 2020-12-04 | 首钢京唐钢铁联合有限责任公司 | KR desulfurization ladle inside lining |
| CN112024861B (en) * | 2020-08-06 | 2022-04-26 | 首钢京唐钢铁联合有限责任公司 | KR desulfurization ladle inside lining |
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| Publication number | Publication date |
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| CN108097941A (en) | 2018-06-01 |
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