CN207655874U - Device for washing, purifying and heating molten steel slag in tundish - Google Patents
Device for washing, purifying and heating molten steel slag in tundish Download PDFInfo
- Publication number
- CN207655874U CN207655874U CN201721738316.6U CN201721738316U CN207655874U CN 207655874 U CN207655874 U CN 207655874U CN 201721738316 U CN201721738316 U CN 201721738316U CN 207655874 U CN207655874 U CN 207655874U
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- China
- Prior art keywords
- tundish
- molten steel
- slag
- heating
- liquid
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 239000002893 slag Substances 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 title claims abstract description 29
- 238000005406 washing Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims abstract description 13
- 239000011819 refractory material Substances 0.000 claims abstract description 8
- 239000003818 cinder Substances 0.000 claims description 22
- 238000007670 refining Methods 0.000 claims description 15
- 239000000155 melt Substances 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000002386 leaching Methods 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 238000002791 soaking Methods 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000010813 municipal solid waste Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 238000009749 continuous casting Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model provides a device that purification and intensification were washed to middle package molten steel slag, including ladle, middle package, liquid slag bath, the liquid slag bath is the cylindric, and its lateral wall comprises upper and lower two sections, and the upper segment is for the resistant sediment section of soaking, and the hypomere is the refractory material section, and the liquid slag bath links to each other with a supporting beam and hangs in the middle package, is furnished with heating electrode in the pond, is equipped with the electromagnetic stirrer outside the long mouth of a river of ladle lower part, is equipped with molten steel temperature measurement thermocouple in the middle package and links to each other with P L C controller.
Description
Technical field
The utility model belongs to purification of molten steel field, and the dress with heating is purified more particularly to a kind of tundish molten steel wash heat
It sets.
Background technology
In order to promote continuous casting billet quality, the field trash in strand will be removed to greatest extent first.In order to remove as possible
Field trash in casting molten steel, technical way have Metal in Tundish flowing control and filtering technique.Metal in Tundish stream
Dynamic control technology mainly include the capacity of tundish, the optimization design of shape, flowing control research etc..Rational packet shape and big
Capacity can all increase residence time of the molten steel in tundish, so that field trash is had sufficient floating interval of floating dock, be arranged in tundish
Barricade, dam and water conservancy diversion partition wall are control molten steel flow paths to promote the effective ways of inclusion removal.Pass through netted filtering
The use of device, core pattern filter, particulate filter and porous ceramic filter can remove the solid phase being suspended in molten steel
Grain field trash.Although the above technology can promote the removal of field trash, also there are many disadvantages, is changing inside tundish
While structure, the dead zone in packet will certainly be increased, cause molten steel temperature uneven；When increasing intermediate inclusion quantity makes the stop of molten steel
Between extend, will result in a large amount of heat loss, this is unreasonable from the point of view of energy saving angle；Using various filters to molten steel
It is filtered, is possible to that large-scale foreign impurity can be brought to molten steel in filter process, and press from both sides the liquid in molten steel
Sundries is it is difficult to which removal, clean-up effect is not fine, so intermediate packet filtering technology is flowed relative to Metal in Tundish and controlled
Technology is used there is no universal.Next is exactly the solidified structure raising proportion of equiaxed grain for improving strand, and numerous studies show to reduce
The degree of superheat of pour steel is to obtain the effective means of high equiaxial crystal ratio, therefore, both at home and abroad to reduce molten steel the degree of superheat also into
It has gone numerous studies, has such as passed through tundish induction heating technique, heating plasma technology, electric arc heated technology, electroslag and heat skill
Art and heated by gas technology etc..Although these heating techniques can control the superheat of liquid steel of tundish in relatively low range
It is interior, but this is needed with addition of complicated equipment with high costs, in addition, there is also installation maintenance inconvenience, is also needed in application process
Want high cost of equipment maintenance.
In order to overcome in removal tundish at present present in molten steel inclusion and each method to low-temperature steel water management not
Foot, it is proposed that the molten steel for being poured into tundish is purified by the method for wash heat, while can also be realized with thermal energy in electroslag
Molten steel is heated, so that molten steel purifying and low temperature is controlled and combines together, can also further be carried while simplifying device
Rise the quality of continuous casting.
Invention content
It is not thorough for inclusion removal in molten steel in current tundish and the problems such as degree of superheat control difficulty is big, this
Utility model aims to solve the problem that in existing casting process, present in Metal in Tundish inclusion removal and degree of superheat control technology not
A kind of foot, it is proposed that device of tundish molten steel wash heat purification and heating, it is therefore intended that remove the folder in molten steel to greatest extent
Sundries improves the cleanliness factor of molten steel, while can also heat to the molten steel of casting, realizes low overheat casting, improves casting
The solidified structure of base improves proportion of equiaxed grain.
In order to achieve the above objectives, the utility model uses the following technical solution：
A kind of device of tundish molten steel wash heat purification and heating, including ladle, tundish, melt cinder pond, the melt cinder pond
For tubular, side wall is made of two sections, and epimere is that resistance to slag soaks section, and hypomere is refractory material section, melt cinder pond and supporting beam phase
Connect and be suspended in tundish, equipped with heating electrode in melt cinder pond, magnetic stirrer is equipped on the outside of the long nozzle of ladle lower part；
It is equipped with molten steel temperature in tundish and measures thermocouple, which is connected with PLC controller.
Further, PLC controller is compared set superheat of liquid steel with practical superheat of liquid steel, according to than
Relatively result sends out instruction by data line to electrical power control cabinet, and is heated to refining slag by heating electrode.
Further, refining slag temperature measuring thermocouple is equipped in melt cinder pond, which is connected with PLC controller.
Further, to inlay connection between the epimere and hypomere in the melt cinder pond, the periphery of epimere, which is equipped with, reinforces box hat
And it is connect with supporting beam.
Further, the tundish bottom in tundish immediately below long nozzle is set with dimpled shock plate, in centre
The both sides for wrapping bottom are equipped with submersed nozzle.
Further, the resistance to slag leaching section in the melt cinder pond is made of water-cooled red copper wall, and refractory material section is magnesium carbonaceous fire resisting
Material.
By the use of newly-designed device and method, following advantageous effect can get：
1) can inclusion removal processing be carried out to the molten steel of casting to greatest extent, improves the cleanliness factor of molten steel, for height
The production of added value steel grade creates conditions；
2) degree of superheat for being flowed into molten steel in crystallizer can be controlled at 5~10 DEG C, the equiax crystal of strand can be made
Rate improves 15~30% again on the basis of existing；
3) component segregation and the shrinkage cavity that can further decrease continuous casting billet, improve the quality of strand.
Description of the drawings
Fig. 1 is the structural schematic diagram of utility model device.
In figure：1- ladles；2- refining slag temperature measuring thermocouples；3- electrode power-lines；4-PLC controllers；5- data pass
Defeated line；6- electrical power control cabinets；7- molten steel temperatures measure thermocouple；8- shock plates；9- submersed nozzles；10- tundish；11- covers
Lid agent；12- molten steel；13- refractory material sections；14- supporting beams；15- reinforces box hat；The resistance to slags of 16- soak section；17- heats electrode；18-
Refining slag；19- magnetic stirrers；20- long nozzles；21- melt cinders pond.
Specific implementation mode
In order to improve the quality of continuous casting billet, it is proposed that a kind of device of tundish molten steel wash heat purification and heating, in conjunction with
Attached drawing is described in further detail the utility model.
As shown in Figure 1, a kind of device of tundish molten steel wash heat purification and heating, including ladle 1, tundish 10, melt cinder
Pond 21, the melt cinder pond 21 are tubular, and side wall is made of two sections, because slag contains and largely invades refractory material in slag bath
The stronger CaF of corrosion2, it is to be contacted with refining slag to prevent erosion of the slag to melt cinder pond in slag bath, the epimere in melt cinder pond 21
Resistance to slag soak section 16, be made of water-cooled red copper wall, hypomere is refractory material section 13, and the molten steel 12 being inserted into tundish 10 works as
In, it is to inlay connection using magnesia carbon refractory, between epimere and hypomere；In order to increase epimere intensity, section 16 is soaked in resistance to slag
Periphery be equipped with reinforce box hat 15 and by reinforce box hat 15 connect with supporting beam 14, so that melt cinder pond 21 is suspended on tundish 10
It is interior；In order to be heated to the refining slag 18 in melt cinder pond 21, equipped with the heating electricity controlled by electrical power control cabinet 6 in melt cinder pond 21
Pole 17, heating electrode are connected by power cord 3 with electrical power control cabinet 6, and electrical power control cabinet is equipped with manually and automatically both of which.For
Molten steel that the long nozzle 20 connected from ladle 1 is flowed into refining slag 18 is set to be come into full contact with refining slag 18 to promote
The removal of field trash in molten steel, while preventing the steel stream flow down because its impact strength is excessive, desulphurization emulsification is led into essence
Refining slag 18 is carried to by steel stream except melt cinder pond 21, while being also preferably refined slag 18 to flow into the molten steel in melt cinder pond 21
Heating, it is in divergent shape to need the molten steel stream stock being flowed into refining slag 18 as possible, for this purpose, 20 outside of long nozzle in ladle lower part
Equipped with magnetic stirrer 19；In order to preferably control the temperature of molten steel in the temperature of refining slag 18 and tundish in melt cinder pond 21,
In refining slag 18 be equipped with slag bath slag temperature measuring thermocouple 2, for monitoring the slag temperature in molten slag bath, with prevent because
Slag temperature occurs to burn the generation of phenomenon when soaking the bearing temperature of section higher than resistance to slag.Molten steel temperature is equipped in tundish to measure
Thermocouple 7, for acquiring molten steel temperature signal in tundish, as sending out or stop heating instructions.Two thermocouples all with PLC
Controller 4 is connected, and electrical power control cabinet 6 is connected by data line 5 with PLC controller 4, and PLC controller 4 is to set steel
The liquid degree of superheat is compared with practical superheat of liquid steel, is sent out to electrical power control cabinet 6 by data line 5 according to comparison result
Instruction realizes and is adjusted into Mobile state to heating heated by electrodes power that the adjusting range of power is 0~500kW, and passes through heating
Electrode 17 heats refining slag.In order to improve flow field of the molten steel in tundish, in tundish immediately below long nozzle
Tundish bottom sets the molten steel with dimpled shock plate 8, flowed out from long nozzle after wash heat and heating, is flowed into shock plate
On, after so that the flow field of molten steel is obtained optimization, by the way that the outflow of submersed nozzle 9 in tundish both sides is arranged.
Using a kind of tundish molten steel wash heat purify with heat up device to from ladle be injected into the molten steel in tundish into
Row processing after, can further remove the field trash in molten steel and to molten steel carry out heating control its degree of superheat in ideal range
It is interior, improve the quality of continuous casting billet.
Claims (6)
1. a kind of device of tundish molten steel wash heat purification and heating, it is characterised in that including ladle (1), tundish (10), liquid
Slag bath (21), the melt cinder pond (21) are tubular, and side wall is made of two sections, and epimere is that resistance to slag soaks section (16), and hypomere is
Refractory material section (13), melt cinder pond (21) are connected with supporting beam (14) and are suspended in tundish (10), and melt cinder pond is matched in (21)
There is heating electrode (17), magnetic stirrer (19) is equipped on the outside of the long nozzle (20) of ladle lower part；Steel is equipped in tundish
Liquid temperature measuring thermocouple (7), the thermocouple are connected with PLC controller (4).
2. the device of a kind of tundish molten steel wash heat purification and heating according to claim 1, it is characterised in that PLC is controlled
Device (4) is compared set superheat of liquid steel with practical superheat of liquid steel, passes through data line according to comparison result
(5) instruction is sent out to electrical power control cabinet (6), and refining slag is heated by heating electrode (17).
3. the device of a kind of tundish molten steel wash heat purification and heating according to claim 1, it is characterised in that in melt cinder
Refining slag temperature measuring thermocouple (2) is equipped in pond (21), which is connected with PLC controller (4).
4. the device of a kind of tundish molten steel wash heat purification and heating according to claim 1, it is characterised in that the liquid
To inlay connection between the epimere and hypomere of slag bath (21), the periphery of epimere, which is equipped with, to be reinforced box hat (15) and connects with supporting beam (14)
It connects.
5. the device of a kind of tundish molten steel wash heat purification and heating according to claim 1, it is characterised in that in centre
Tundish bottom in packet immediately below long nozzle is set with dimpled shock plate (8), is equipped with and is immersed in the both sides of tundish bottom
The formula mouth of a river (9).
6. the device of a kind of tundish molten steel wash heat purification and heating according to claim 1, it is characterised in that the liquid
The resistance to slag leaching section (16) of slag bath is made of water-cooled red copper wall, and refractory material section (13) is magnesia carbon refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738316.6U CN207655874U (en) | 2017-12-14 | 2017-12-14 | Device for washing, purifying and heating molten steel slag in tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738316.6U CN207655874U (en) | 2017-12-14 | 2017-12-14 | Device for washing, purifying and heating molten steel slag in tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207655874U true CN207655874U (en) | 2018-07-27 |
Family
ID=62940365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721738316.6U Active CN207655874U (en) | 2017-12-14 | 2017-12-14 | Device for washing, purifying and heating molten steel slag in tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207655874U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954851A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | Device for washing, purifying and heating molten steel in tundish and using method |
| CN111408708A (en) * | 2020-04-24 | 2020-07-14 | 北京奥邦新材料有限公司 | Tundish molten steel low-temperature constant-temperature intelligent casting system with plasma heating function |
| CN111455190A (en) * | 2019-01-21 | 2020-07-28 | 上海大学 | Device and method for purifying and microalloying metal melt |
-
2017
- 2017-12-14 CN CN201721738316.6U patent/CN207655874U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954851A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | Device for washing, purifying and heating molten steel in tundish and using method |
| CN111455190A (en) * | 2019-01-21 | 2020-07-28 | 上海大学 | Device and method for purifying and microalloying metal melt |
| CN111408708A (en) * | 2020-04-24 | 2020-07-14 | 北京奥邦新材料有限公司 | Tundish molten steel low-temperature constant-temperature intelligent casting system with plasma heating function |
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