CN101879590B - Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method - Google Patents
Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method Download PDFInfo
- Publication number
- CN101879590B CN101879590B CN 201010196923 CN201010196923A CN101879590B CN 101879590 B CN101879590 B CN 101879590B CN 201010196923 CN201010196923 CN 201010196923 CN 201010196923 A CN201010196923 A CN 201010196923A CN 101879590 B CN101879590 B CN 101879590B
- Authority
- CN
- China
- Prior art keywords
- tundish
- baking
- nozzle
- sealing ring
- cover
- Prior art date
- 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.)
- Active
Links
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a continuous casting tundish submerged nozzle on-line roasting apparatus and a roasting method, and belongs to the field of metallurgical continuous casting. The apparatus comprises a tundish roaster, an upper tundish nozzle, a nozzle quick-change mechanism, a submerged nozzle, a sealing ring, a roasting sleeve and a support frame, wherein a sealing ferrule is sleeved at the neck of the submerged nozzle, the internal diameter is in close contact with an iron cover of the submerged nozzle, the lower part of the sealing ring is provided with a roasting sleeve, the upper edge of which is in close contact with the sealing ring, and the bottom part is lifted by using the support frame. The invention has the advantages of saving a lower suction device and daily maintenance cost and reducing a large amount of cost along with simple structure. Meanwhile, the device and the method make full use of roasting heat from the tundish and save a large amount of energy medium so as to fulfill the aims of energy conservation and consumption reduction.
Description
Technical field
The invention belongs to the metallurgical continuous casting technical field, a kind of continuous casting tundish submerged nozzle on-line roasting apparatus and baking method particularly are provided.
Background technology
The online baking of continuous casting tundish is an important way of submersed nozzle baking; improving the baking temperature of tundish upper nozzle, shortening the mouth of a river and cease fire to opening service time of watering, guaranteeing to open normally the aspects such as normal function rate of watering operation and improving the mouth of a river and bringing into play important effect; even become the restricted link of continuous casting in producing; the effect of its baking directly affects to open waters the operation and the normal use at the mouth of a river, plays a part positive aspect assurance casting machine production stable.
Before casting machine is produced, the baking of tundish and submersed nozzle is to produce an important step of preparing, present most of steel mill is when the baking mouth of a river, generally use air intake device down, this device is made up of blower fan, body of heater, injection smoke exhaust pipe, compressed air hose, flow control valve, cooling pipe, it is provided with the circular port that a continuous casting tundish inserts in middle, body of heater top, be provided with sealing device around the circular port; The body of heater bottom is provided with exhaust opening and communicates with the injection smoke exhaust pipe, is provided with compressed air hose on the injection smoke exhaust pipe, and compressed air hose is provided with flow control valve.Be provided with muffler in injection smoke exhaust pipe end.Use compressed air that the heat in the tundish is taken out and draw to get off, so that the baking submersed nozzle; Perhaps use blower fan to be connected, utilize the draft of blower fan, the heat in the tundish is taken out drawn to get off, the baking mouth of a river with the body of heater bottom.
The method at the above-mentioned online baking mouth of a river all is to utilize extraneous condition, the heat of tundish baking is taken out drawn to get off, and reaches the purpose at the baking mouth of a river.Above-mentioned baking method needs a large amount of auxiliary equipment: by the body of heater of refractory material and structure steel fabrication, the pipe-line system that middle-size and small-size blower fan, exhausting are used and corresponding water-cooled and air cooling equipment are because the equipment hot soak condition, operation and maintenance difficulty, and expense height.
Summary of the invention
The object of the present invention is to provide a kind of device and baking method of continuous casting tundish submerged nozzle on-line roasting, realized simple and practical, do not need a large amount of roasting plant of extra increase, production cost is low, and structure is very simple, and noise is little, has saved time air intake device and daily use and maintenance cost, has saved a large amount of costs; Use the submersed nozzle of the method and device baking evenly to be rapidly heated, guaranteed the baking quality of submersed nozzle, guaranteed the production direct motion of casting machine; The method has made full use of the heat of tundish baking simultaneously, has saved a large amount of energy medium, has reached energy saving purposes.
Online apparatus for baking of the present invention comprises: tundish roaster, tundish upper nozzle, nozzle quick-change mechanism, submersed nozzle, sealing ring, baking cover, bracing frame; Sealing ring is enclosed within the neck place of submersed nozzle, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches, and the bottom of sealing ring closely contacts with sealing ring for baking cover, the upper edge of baking cover, and bracing frame jack-up is used in the bottom.
The circular cone that the baking cover is made by exotic material is a main body, the circular cone height is 800～900mm, the top internal diameter size is 190～210mm, the bottom internal diameter size is 290～310mm, wall thickness is 28～32mm, two square holes that have in the bottom, side of circular cone symmetry, square hole is of a size of 45*45～55*55mm, foursquare base is 90～100mm apart from the distance of baking cover bottom, and the top, side of baking cover is evenly distributed with four circular holes, and the diameter of this circular hole is 10～15mm, the top of distance of center circle baking cover is 100～150mm, open-top, the bottom sealing constitutes a semienclosed baking cover.During installation, sealing ring is enclosed within the neck place of submersed nozzle, the internal diameter of sealing ring is 160～170mm, external diameter is 310～330mm, thickness is 25～35mm, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches, and the bottom of sealing ring is the baking cover, the upper edge of baking cover closely contacts with sealing ring 4, and bracing frame 7 jack-up are used in the bottom.
Method of the present invention is: before baking between the burner of roaster and the tundish clad and stopper hole is sealed, during baking, the valve opening of manual adjustments tundish roaster arrives: 25%～35%, burning owing to coal gas in the tundish will produce 0.3～1.5Mp malleation, the heat that burning produces will be excessive from double-current tundish upper nozzle and overflow launder, after being baked to 25～35 minutes, temperature in the tundish can reach 1050～1150 ℃, valve opening with the tundish roaster is adjusted to subsequently: 40%～50%, toast after 10～20 minutes, double fluid tundish upper nozzle place will have flame to get off, by regulating the throttle opening of single burner, make the length of flame at double-current tundish upper nozzle place reach 700～800mm, from the bottom is packed the baking cover into, use sealing ring with sealing between submersed nozzle neck and the baking cover submersed nozzle this moment, together is encased in the nozzle quick-change mechanism, and get to the cast position, utilize the flame at filling pipe end place to toast submersed nozzle.
The present invention has abandoned traditional online baking method and loaded down with trivial details apparatus, has started a kind of simple and practical new baking process technology.Before the baking tundish, burner and middle clad with roaster, and the stopper hole site seals, only stay the position blow-by of tundish overflow launder, be used for adjusting and being released in the pressure that produces in the bake process tundish, so that be used for the heat of balance double fluid tundish upper nozzle bottom, by adjusting the throttle opening of single burner, obtain the flame of certain-length, use a kind of uniqueness simultaneously, simply, practical apparatus for baking, submersed nozzle is packed into from the bottom,, together be encased in the nozzle quick-change mechanism submersed nozzle neck and baking cover place good seal with sealing ring, get to the cast position together with the mouth of a river.Coal gas expands in the tundish internal combustion during baking, and the reason owing to sealing will produce certain malleation simultaneously, and the heat in the tundish will outwards discharge by double-current filling pipe end place and overflow launder place.Utilize double-current tundish upper nozzle place excessive heat and apparatus for baking, reach the purpose at the online baking mouth of a river.
Key point of the present invention is: the one, and the sealing between the burner of tundish roaster and the tundish clad, and the sealing in stopper hole, the pressure condition when being directly connected to baking in the tundish; The 2nd, double-current filling pipe end place heat overflow what, be directly connected to the length of flame of getting off from filling pipe end; The 3rd, the insulation situation at baking position submersed nozzle directly has influence on the effect of the mouth of a river in bake process; The 4th, the particular design of special baking cover comprises position, the size of perforate, directly has influence on the baking quality at the mouth of a river; The 5th, special baking cover and the coupling between the submersed nozzle will directly have influence on the temperature rise speed of mouth of a river baking.
Yet in concrete online bake process, such as the baking state of roaster, the state of tundish stamp mass, a series of problem the such as whether length of flame of getting off from double-current tundish upper nozzle during baking, the design of apparatus for baking be reasonable affects the effect at the online baking mouth of a river equally.
Advantage of the present invention:
By implementing above technical scheme, make in the submerged nozzle on-line roasting process, temperature rise speed is fast, and whole mouth of a river baking temperature is even, the baking curve can satisfy the technology instructions for use at the mouth of a river, has guaranteed the baking quality of submersed nozzle, avoided because of mouth of a river baking improper, opening of causing watered the mouth of a river and burst and corrode serious situation, guaranteed the stability that casting machine is produced.
The present invention is practical and convenient, and the mouth of a river evenly is rapidly heated, and noise is little, and structure is very simple, has saved time air intake device and daily use and maintenance cost, has saved a large amount of costs.Make full use of the heat of tundish baking simultaneously, saved a large amount of energy medium, reached energy saving purposes.
Description of drawings
Fig. 1 is for using the temperature rise tendency chart at the online baking of the method mouth of a river.
Fig. 2 is that apparatus for baking and submersed nozzle cooperate figure.Wherein, the circular hole 5 on the side opening (60*80mm) 2 of tundish submersed nozzle 1, tundish submersed nozzle, baking cover 3, sealing ring 4, baking cover top, side opening 6, the bracing frame 7 of baking cover.
The specific embodiment
The present invention includes tundish roaster, tundish upper nozzle, nozzle quick-change mechanism, submersed nozzle, sealing ring, baking cover, bracing frame; Sealing ring 4 is enclosed within the neck place of submersed nozzle, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches, and the bottom of sealing ring 4 closely contacts with sealing ring 4 for baking cover 3, the upper edge of baking cover 3, and bracing frame 7 jack-up are used in the bottom.
The present invention is by adopting apparatus for baking, before baking, between the burner of roaster and the tundish clad and stopper hole is sealed, during baking, the valve opening of manual adjustments tundish roaster arrives: 25%～35%, burning owing to coal gas in the tundish will produce 0.3～1.5Mp malleation, the heat that burning produces will be excessive from double-current tundish upper nozzle and overflow launder, after being baked to 25～35 minutes, temperature in the tundish can reach 1050～1150 ℃, valve opening with the tundish roaster is adjusted to subsequently: 40%～50%, toast after 10～20 minutes, double fluid tundish upper nozzle place will have flame to get off, by regulating the throttle opening of single burner, make the length of flame at double-current tundish upper nozzle place reach 700～800mm, this moment submersed nozzle is packed into from the bottom and toast the cover 3, use sealing ring 4 with sealing between submersed nozzle neck and the baking cover, together be encased in the nozzle quick-change mechanism, and get to the cast position, utilize the flame at filling pipe end place to toast submersed nozzle.In order to reach good cured effect, guarantee that bake process meets the baking heating curve at the mouth of a river fully, open two foursquare holes 6 in corresponding baking cover both sides, the position of submersed nozzle side opening, this hole is less than normal mouth of a river side opening 2 sizes of using (60 * 80mm), but both cross-sectional area sums are again greater than the cross-sectional area of mouth of a river internal diameter, so that be not subjected to resistance when flame gets off, strengthen the speed of hot-fluid.When mounted, the position in two holes of baking cover 3 must be higher than the position of side opening bottom, 25～35mm mouth of a river, the upper edge of both side openings is on same horizontal plane, like this under the situation that does not influence rate of heat flow, when flame delivery port side opening, will produce a very little resistance, and a part of flame be stopped produce a hot-fluid that makes progress.The special design of another of baking cover 3 is, behind the submersed nozzle of packing into, between inwall that toasts cover and mouth of a river outer wall, form a cavity, the circular hole 5 that it is 10～15mm that while has four diameters on the top of baking cover, the one-sided sectional view of cavity is a monolateral centrum cross section, flame is blocked a hot-fluid that makes progress of generation, to around the mouth of a river, form the hot-fluid of ring-type along with cavity, flame will upwards toast the outer surface at the mouth of a river uniformly from bottom, the mouth of a river, four circular holes on baking cover top, play certain drainage, the heat of baking is better circulated in cavity, also discharged the moisture of a part of heat simultaneously.The mouth of a river is in baking like this, and its internal diameter and outer wall heat simultaneously, and mouth of a river ambient heat is evenly distributed, in bake process, mouth of a river temperature rise speed is fast, and the temperature of baking is even, uses the contact temperature-measuring instrument to observe, the double fluid mouth of a river is in short 25 minutes, temperature reaches more than 1000 degree fast, meets the baking temperature curve at the mouth of a river fully, has solved because of toasting temperature rise slow, time is long, and the mouth of a river glaze pull-up that causes falls and the situation of body oxidation of coal.Temperature rise curve figure when using the online baking submersed nozzle of the method, as shown in Figure 1.
The apparatus and method at the online baking of the continuous casting tundish of the present invention mouth of a river are achieved in that
Before underway the bag baking, will use the slag wool good seal between the burner of tundish roaster and the tundish clad, prevent to leak in the bake process fiery, scaling loss tundish burner.Double fluid stopper hole uses slag wool to carry out shutoff equally, prevents to leak in the bake process fire, scaling loss stopper rod bar and crossbeam.After the little fire of tundish toasts 30 minutes, temperature in the tundish can reach about 1100 degree, change the big fire baking after 10 minutes, heat in the tundish is under the sealing function of tundish, will discharge at double-current tundish upper nozzle and overflow launder place, double fluid tundish upper nozzle place will produce the flame of certain-length, and adjust to the length of flame at double-current tundish upper nozzle place about 800mm by adjusting the throttle opening of single burner this moment.Submersed nozzle is encased in the baking cover from the bottom, use sealing ring with good seal between the neck place of submersed nozzle and the baking cover, water in preceding 60 minutes opening, submersed nozzle is encased in the tundish quick-changing mechanism together with the baking cover, and get to and pour into a mould the position, the bottom of baking cover uses the steel bracket that has the plane to hold up, the side opening upper edge of adjusting submersed nozzle side opening and baking cover is on same horizontal plane, and confirm the position whether mouth of a river mediates in the baking cover, cavity all around must be even, with the effect of guaranteeing to toast.After baking finishes, the bracing frame of bottom is withdrawn, directly special baking cover is shifted out from the bottom of submersed nozzle.
All equivalent variations and modifications of being done according to shape of the present invention, structure, feature and spirit all should be encompassed in protection scope of the present invention.
Claims (2)
1. a continuous casting tundish submerged nozzle on-line roasting apparatus comprises: tundish roaster, tundish upper nozzle, nozzle quick-change mechanism, submersed nozzle, sealing ring, baking cover, bracing frame; It is characterized in that, sealing ring (4) is enclosed within the neck place of submersed nozzle, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches, and the bottom of sealing ring (4) is baking cover (3), the upper edge of baking cover (3) closely contacts with sealing ring (4), and bracing frame (7) jack-up is used in the bottom of baking cover (3);
Seal between the burner of tundish roaster and the tundish clad, and the sealing in stopper hole; Heat in the tundish will outwards discharge by double-current tundish upper nozzle place and overflow launder place; Utilize double-current tundish upper nozzle place excessive heat and apparatus for baking, reach the purpose of online baking submersed nozzle;
The circular cone that described baking cover (3) is made by exotic material is a main body, the circular cone height is 800～900mm, the top internal diameter size is 190～210mm, the bottom internal diameter size is 290～310mm, wall thickness is 28～32mm, have two square holes (6) in the bottom, side of circular cone symmetry, square hole is of a size of 45*45～55*55mm, foursquare base is 90～100mm apart from the distance of baking cover bottom, and the top, side of baking cover is evenly distributed with four circular holes (5), and the diameter of this circular hole is 10～15mm, the top of distance of center circle baking cover is 100～150mm, open-top, the bottom sealing constitutes a semienclosed baking cover; During installation, sealing ring (4) is enclosed within the neck place of submersed nozzle, and the internal diameter of sealing ring is 160～170mm, and external diameter is 310～330mm, and thickness is 25～35mm, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches.
2. method that adopts the described online apparatus for baking baking of claim 1 continuous casting tundish submersed nozzle, it is characterized in that, before baking, between the burner of tundish roaster and the tundish clad and stopper hole is sealed, during baking, the valve opening of manual adjustments tundish roaster arrives: 25%～35%, burning owing to coal gas in the tundish will produce 0.3～1.5Mp malleation, the heat that burning produces will be excessive from double-current tundish upper nozzle and overflow launder, after being baked to 25～35 minutes, temperature in the tundish can reach 1050～1150 ℃, valve opening with the tundish roaster is adjusted to subsequently: 40%～50%, toast after 10～20 minutes, double fluid tundish upper nozzle place will have flame to get off, by regulating the throttle opening of single burner, make the length of flame at double-current tundish upper nozzle place reach 700～800mm, this moment submersed nozzle is packed into from the bottom and toast the cover (3), use sealing ring (4) with sealing between submersed nozzle neck and the baking cover, together be encased in the nozzle quick-change mechanism, and get to the cast position, utilize the flame at double-current tundish upper nozzle place to toast submersed nozzle;
The circular cone that described baking cover (3) is made by exotic material is a main body, the circular cone height is 800～900mm, the top internal diameter size is 190～210mm, the bottom internal diameter size is 290～310mm, wall thickness is 28～32mm, have two square holes (6) in the bottom, side of circular cone symmetry, square hole is of a size of 45*45～55*55mm, foursquare base is 90～100mm apart from the distance of baking cover bottom, and the top, side of baking cover is evenly distributed with four circular holes (5), and the diameter of this circular hole is 10～15mm, the top of distance of center circle baking cover is 100～150mm, open-top, the bottom sealing constitutes a semienclosed baking cover; During installation, sealing ring (4) is enclosed within the neck place of submersed nozzle, and the internal diameter of sealing ring is 160～170mm, and external diameter is 310～330mm, and thickness is 25～35mm, and the iron of internal diameter and submersed nozzle is locked to connect airtight and touches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196923 CN101879590B (en) | 2010-06-02 | 2010-06-02 | Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196923 CN101879590B (en) | 2010-06-02 | 2010-06-02 | Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101879590A CN101879590A (en) | 2010-11-10 |
| CN101879590B true CN101879590B (en) | 2011-12-07 |
Family
ID=43051799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010196923 Active CN101879590B (en) | 2010-06-02 | 2010-06-02 | Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101879590B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443680A (en) * | 2011-12-07 | 2012-05-09 | 鞍钢股份有限公司 | Method for preventing flocculation flow of first tank of aluminum killed steel produced by medium-thin slab continuous casting machine |
| CN112517898A (en) * | 2020-09-11 | 2021-03-19 | 南京钢铁股份有限公司 | Continuous casting tundish baking operation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565772A (en) * | 2003-06-23 | 2005-01-19 | 宝钢集团上海梅山有限公司 | Method and device for burning immersed nozzle of continuous casting bakie |
-
2010
- 2010-06-02 CN CN 201010196923 patent/CN101879590B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565772A (en) * | 2003-06-23 | 2005-01-19 | 宝钢集团上海梅山有限公司 | Method and device for burning immersed nozzle of continuous casting bakie |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101879590A (en) | 2010-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205254033U (en) | Energy -conserving automatic de -waxing dewaxing system | |
| CN101879590B (en) | Continuous casting tundish submerged nozzle on-line roasting apparatus and roasting method | |
| CN200974116Y (en) | High-efficient baking equipment of package immersion nozzle in middle of continuous casting | |
| CN207188781U (en) | Molten steel bottom drain bag with vacuum | |
| CN203972843U (en) | High-efficient tundish roaster | |
| CN201823931U (en) | Baking device for submersed water gap | |
| CN206531397U (en) | A kind of ceramic sintering furnace of use natural gas clean energy resource | |
| CN206588342U (en) | A kind of continuous casting intermediate inlet toasts bottom extractor fan online | |
| CN202316994U (en) | Casting ladle baking device | |
| CN106312039B (en) | Off-line baking device and method for tundish submersed nozzle | |
| CN102228985B (en) | Baking device and method for integral water gap of continuous casting tundish | |
| CN107470608A (en) | A kind of tundish long nozzle apparatus for baking | |
| CN204381362U (en) | A kind of apparatus for baking of continuous casting tundish submerged nozzle | |
| CN204449280U (en) | Steel ladle baking device | |
| CN203908331U (en) | Single-furnace-body on-line alloying furnace | |
| CN204194784U (en) | A kind of baking of tundish device | |
| CN201964759U (en) | Casting melting furnace | |
| CN206839158U (en) | A kind of tundish upper nozzle apparatus for baking for the cast of vanadium ferrotianium | |
| CN209393982U (en) | A kind of Ladle Regenerative Device | |
| CN106862548A (en) | A kind of continuous casting intermediate inlet toasts bottom extractor fan and method online | |
| CN203751327U (en) | Continuous casting machine tundish submersed nozzle baking furnace | |
| CN201625779U (en) | Water gap baking oven | |
| CN211708089U (en) | Device for baking tundish lining | |
| CN207789290U (en) | Heat preservation still kettle system for producing aerated bricks | |
| CN205763830U (en) | A kind of online apparatus for baking of continuous casting tundish submerged nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING SHOUGANG CO., LTD. Free format text: FORMER OWNER: HEBEI SHOUGANG QIAN AN STEEL CO., LTD. Effective date: 20140404 Free format text: FORMER OWNER: CAPITAL IRON + STEEL GENERAL CO. Effective date: 20140404 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 064404 TANGSHAN, HEBEI PROVINCE TO: 100041 SHIJINGSHAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140404 Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Beijing Shougang Co., Ltd. Address before: Yangzidian Town, Qian'an City, Hebei province 064404 Patentee before: Hebei Shougang Qian'an Steel Co., Ltd. Patentee before: Capital Iron & Steel General Company |