CN106282482A - A kind of molten steel export structure - Google Patents
A kind of molten steel export structure Download PDFInfo
- Publication number
- CN106282482A CN106282482A CN201611014176.8A CN201611014176A CN106282482A CN 106282482 A CN106282482 A CN 106282482A CN 201611014176 A CN201611014176 A CN 201611014176A CN 106282482 A CN106282482 A CN 106282482A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- molten steel
- baffle plate
- export structure
- cavity
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- 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
- B22D41/50—Pouring-nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to steel making equipment field, specifically a kind of molten steel export structure.The outlet of described molten steel includes the cylinder for molten steel flow, is provided with the cavity for molten steel flow on cylinder, is provided with the baffle plate for producing suppression eddy current on cylinder inboard wall.The present invention is not only simple in structure, and it is easy to use, simple cylinder can be realized as suppressing the effect of whirlpool slag with the combination of baffle plate, practical and with low cost, during converter tapping, continuous casting, reduce slag to be involved in subsequent vessel molten steel, thus reach to reduce deoxidizer, alloy consumption, promote molten steel quality purpose.
Description
Technical field
The present invention relates to steel making equipment field, specifically a kind of molten steel export structure.
Background technology
Whirlpool is a kind of phenomenon common in daily life, it be fluid in flow process due between adjacent each particle flow
Speed is inconsistent and causes, and when countless micro-whirlpool accumulations is amplified, just becomes visible whirlpool.In BOF steelmaking shop, molten steel from
Slag, in the tapping process of ladle, due to the generation of whirlpool, can be involved in molten steel, also can suck air, make time serious by converter
Become the quantity of slag in ladle big and molten steel oxidation, cause rephosphorization of molten steel, yield of alloy reduces, steel inclusion increases, molten steel pollutes,
The series of problems such as ladle dry slag, refractory consumption rate increase；When continuous casting produces, during molten steel is from ladle to tundish, also
Produce similar phenomenon, pollute molten steel.
Summary of the invention
It is an object of the invention to provide one to suppress or reduce in eddy current coil slag entrance molten steel.
For realizing such purpose, the technical scheme is that a kind of molten steel export structure, described export structure includes
For the cylinder of molten steel flow, cylinder is provided with the cavity for molten steel flow, cylinder inboard wall is provided with and presses down for generation
The baffle plate of eddy current processed.
Described cylinder is connected with the container for holding molten steel, container be provided with suitable with cylinder and for cylinder
The connector being connected.
Described baffle plate is rectangle, trapezoidal or circular arc.
Described cylinder cross section is annulus or elliptical ring.
Described baffle plate is evenly distributed on cylinder inboard wall.
The described baffle plate being provided with more than 2 on cylinder inboard wall.
Described baffle plate is perpendicular to cylinder inboard wall and arranges and extend to body centre axis, and development length is not less than being
/ 4th and a no more than cylinder cavity diameter 1/3rd of cylinder cavity diameter.
Described baffle length is 2-10 times of cavity diameter and is less than barrel lenght.
Described cylinder is made up of refractory material with baffle plate.
Beneficial effects of the present invention:
The present invention is not only simple in structure, and easy to use, and simple cylinder can be realized as suppression with the combination of baffle plate
The effect of whirlpool slag, practical and with low cost, during converter tapping, continuous casting, reduce slag and be involved in next and hold
In device molten steel, thus reach to reduce deoxidizer, alloy consumption, promote molten steel quality purpose.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
1, cylinder, 2, cavity, 3, baffle plate.
Detailed description of the invention
A kind of molten steel export structure, export structure includes the cylinder for molten steel flow, is provided with for molten steel on cylinder 1
The cavity 2 of flowing, is provided with the baffle plate 3 for producing suppression eddy current on cylinder 1 inwall.
As preferably, heretofore described cylinder 1 is connected with for holding the container of molten steel, on container be provided with
Cylinder 1 connector that is suitable and that be connected with cylinder 1.Such setting is easy to this device and can use the outlet of this device
Being connected, cylinder 1 diameter is suitable with the connector diameter being connected simultaneously, preferably uses interference fit, so can make
Obtain junction to fit tightly, it is to avoid molten steel overflows from junction, cause waste with dangerous.
As preferably, in the present invention, baffle plate 3 is rectangle, trapezoidal or circular arc, and cylinder cross section is annulus or elliptical ring,
Requirement to producing is the harshest, is realizing suppressing the function of eddy current, is also saving production cost simultaneously, is conducive to producing
Use.
As preferably, being provided with the baffle plate of more than 2 in the present invention on cylinder inboard wall, baffle plate is evenly distributed on cylinder
Inwall, the suppression eddy current branch produced inside cylinder 1 arranging that baffle plate is uniformly is uniform, it is to avoid because the suppression whirlpool produced
Stream is unequal and affects the inhibitory action to central vortex, and baffle plate is preferably provided more than 2, is traditionally arranged to be 3, but one
Individual baffle plate suppression venturi effect is the best, too much arranges the baffle number being more, not only affects molten steel flow velocity, also waste material.
As preferably, heretofore described baffle plate 3 is perpendicular to cylinder 1 inwall and arranges and extend to cylinder 1 central axis
Length, length is not less than 1/4th and no more than cylinder 1 cavity diameter 1/3rd for cylinder 1 cavity diameter, and baffle plate 3 is long
Degree is 2-10 times of cavity diameter and is less than cylinder 1 length, and the thickness of baffle plate 3 can not be the highest simultaneously, in conjunction with actual process
Needing, can select different cylinder 1 thickness according to different cylinder 1 inner chamber, the length of baffle plate 3 should be moderate, too short can not rise
To producing the effect suppressing eddy current, long being not easy to is installed；The most also needing moderate, too high, each baffle plate 3 intersects one
Rising, be not only not easy to install, and abrasion is big, also do not have the effect of suppression eddy current, too short being unfavorable for suppresses eddy current, does not reaches life
The requirement produced.
As preferably, middle cylinder body 1 of the present invention is made up of refractory material with baffle plate 3, according to producing needs, can be MgO-C,
The materials such as Al2O3-MgO-C matter or corundum.
As preferably, middle cylinder body 1 outer end of the present invention is provided with packed layer, and its effect is avoided this device exactly and uses this dress
The device junction put is not tight, causes molten steel leakage loss.
In order to illustrate that the present invention, below example are used for illustrating the present invention the most intuitively, but the protection model of the present invention
Enclose and be not limited in following instance.
Example 1: a kind of nominal capacity suppressing whirlpool slag is 300 tons of converter tapholes
A kind of refractory material design feature suppressing whirlpool slag is: main by cylinder 1, baffle plate 3 forms, cylinder 1 and
Baffle plate 3 is made by refractory material；
The middle part of cylinder is cavity 2, a diameter of 170mm, length 1700mm；
Cylinder 1 is integrated into one section of converter taphole；
The section configuration of cylinder 1 is circular；
Baffle plate 3 is shaped as rectangle；
Described baffle plate 3 quantity is 3, is uniformly distributed on cavity 2 circumference, i.e. 3 angles of adjacent screen are 120 °；Baffle plate
Development length is 45mm, length 1600mm, and material is identical with tapping hole refractory material.
Implementation result:
(1) converter tapping process slag amount is little, and after tapping, ladle top slag thickness reduces 21mm；
(2) just steel-making water, after LF refine, returns P amount and reduces 0.0015wt%, and steel quality improves；
(3), when smelting aluminum killed steel, final deoxidizing aluminium consumption can save 0.3kg/t molten steel；
(4) molten steel is from converter to ladle, in ladle to tundish transfer process, molten steel recovery rate is respectively increased 0.30%,
0.10%；
(5) the converter tapping not deoxidation processed through " converter-RH-continuous casting " or the steel series of weak deoxidation, molten steel goes out at RH
Standing and sample with bag sampling rate in continuous casting relatively, in steel, dissolved aluminum loss reduces 0.0015wt%, improves Cleanliness of Molten Steel.
Example 2: a kind of nominal capacity suppressing whirlpool slag is 300 tons of blocking dregs of converter furnace sliding plate filling pipe ends
A kind of refractory material design feature suppressing whirlpool slag is: main by cylinder 1, baffle plate 3 forms, cylinder 1 and
Baffle plate 3 is made by refractory material；
The middle part of cylinder is cavity 2, a diameter of 170mm, length 300mm；
Cylinder 1 is integrated into one section of blocking dregs of converter furnace sliding plate filling pipe end；
The section configuration of cylinder 1 is circular；
Baffle plate 3 is shaped as rectangle；
Described baffle plate 3 quantity is 3, is uniformly distributed on cavity 2 circumference, i.e. 3 angles of adjacent screen are 120 °；Baffle plate
Development length is 45mm, length 280mm, and material is identical with blocking dregs of converter furnace sliding plate filling pipe end refractory material.
(1) converter tapping process slag amount is little, and after tapping, ladle top slag thickness reduces 19.5mm；
(2) just steel-making water, after LF refine, returns P amount and reduces 0.0015wt%, and steel quality improves；
(3), when smelting aluminum killed steel, final deoxidizing aluminium consumption can save 0.3kg/t molten steel；
(4) molten steel is from converter to ladle, in ladle to tundish transfer process, molten steel recovery rate is respectively increased 0.30%,
0.13%；
(5) the converter tapping not deoxidation processed through " converter-RH-continuous casting " or the steel series of weak deoxidation, molten steel goes out at RH
Standing and sample with bag sampling rate in continuous casting relatively, in steel, dissolved aluminum loss reduces 0.0015wt%, improves Cleanliness of Molten Steel.
Example 3: a kind of nominal capacity suppressing whirlpool slag is 300 tons of ladle upper nozzles
A kind of refractory material design feature suppressing whirlpool slag is: main by cylinder 1, baffle plate 3 forms, cylinder 1 and
Baffle plate 3 is made by refractory material；
The middle part of cylinder is cavity 2, a diameter of 100mm, length 320mm；
Cylinder 1 is integrated into one section of ladle upper nozzle；
The section configuration of cylinder 1 is circular；
Baffle plate 3 is shaped as rectangle；
Described baffle plate 3 quantity is 3, is uniformly distributed on cavity 2 circumference, i.e. 3 angles of adjacent screen are 120 °；Baffle plate
Development length is 28mm, length 300mm, and material is identical with ladle upper nozzle refractory material.
(1) converter tapping process slag amount is little, and after tapping, ladle top slag thickness reduces 20mm；
(2) just steel-making water, after LF refine, returns P amount and reduces 0.0010wt%, and steel quality improves；
(3), when smelting aluminum killed steel, final deoxidizing aluminium consumption can save 0.3kg/t molten steel；
(4) molten steel is from converter to ladle, in ladle to tundish transfer process, molten steel recovery rate is respectively increased 0.30%,
0.10%；
(5) the converter tapping not deoxidation processed through " converter-RH-continuous casting " or the steel series of weak deoxidation, molten steel goes out at RH
Standing and sample with bag sampling rate in continuous casting relatively, in steel, dissolved aluminum loss reduces 0.0015wt%, improves Cleanliness of Molten Steel.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.
For those of ordinary skill in the field, the change of other multi-form can also be made on the basis of the above description
Or variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out
Or change among still in the protection domain of the invention.
Claims (9)
1. a molten steel export structure, described export structure includes the cylinder (1) for molten steel flow, it is characterised in that at cylinder
Body (1) is provided with the cavity (2) for molten steel flow, is provided with the baffle plate for producing suppression eddy current on cylinder (1) inwall
(3)。
A kind of molten steel export structure the most according to claim 1, it is characterised in that described cylinder (1) be used for holding steel
The container of liquid is connected, and container is provided with connector that is suitable with cylinder (1) and that be connected with cylinder (1).
A kind of molten steel export structure the most according to claim 1, it is characterised in that described baffle plate (3) be rectangle, trapezoidal or
Circular arc.
A kind of molten steel export structure the most according to claim 1, it is characterised in that described cylinder (1) cross section be annulus or
Person's elliptical ring.
A kind of molten steel export structure the most according to claim 1, it is characterised in that described baffle plate (3) is evenly distributed on cylinder
Body (1) inwall.
A kind of molten steel export structure the most according to claim 1, it is characterised in that described be provided with 2 on cylinder (1) inwall
Individual above baffle plate (3).
A kind of molten steel export structure the most according to claim 1, it is characterised in that described baffle plate (3) is perpendicular in cylinder
Wall arranges and also extends to cylinder (1) central axis, development length not less than for cylinder (1) cavity diameter 1/4th and little
In cylinder (1) cavity diameter 1/3rd.
A kind of molten steel export structure the most according to claim 1, it is characterised in that described baffle plate (3) a length of cavity (2)
2-10 times of diameter and less than cylinder (1) length.
A kind of molten steel export structure the most according to claim 1, it is characterised in that described cylinder (1) and baffle plate (3) are by resistance to
Fire material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014176.8A CN106282482A (en) | 2016-11-18 | 2016-11-18 | A kind of molten steel export structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014176.8A CN106282482A (en) | 2016-11-18 | 2016-11-18 | A kind of molten steel export structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106282482A true CN106282482A (en) | 2017-01-04 |
Family
ID=57721521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611014176.8A Pending CN106282482A (en) | 2016-11-18 | 2016-11-18 | A kind of molten steel export structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106282482A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922328A (en) * | 2020-09-04 | 2020-11-13 | 江苏隆达超合金航材有限公司 | Novel pouring nozzle for pouring high-temperature alloy master alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565566Y (en) * | 2002-09-13 | 2003-08-13 | 万恩同 | No eddy water gap |
| CN1481955A (en) * | 2002-09-13 | 2004-03-17 | 万恩同 | Water gap without swirl |
| JP2010047795A (en) * | 2008-08-20 | 2010-03-04 | Sumitomo Metal Ind Ltd | Sleeve for tapping hole of converter and method for producing hot metal |
| CN102337376A (en) * | 2010-07-14 | 2012-02-01 | 东北大学 | Vortex suppressing steel-tapping hole for converter |
| CN204434651U (en) * | 2015-01-04 | 2015-07-01 | 中冶南方工程技术有限公司 | Suppress the converter taphole of eddy current slag |
-
2016
- 2016-11-18 CN CN201611014176.8A patent/CN106282482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565566Y (en) * | 2002-09-13 | 2003-08-13 | 万恩同 | No eddy water gap |
| CN1481955A (en) * | 2002-09-13 | 2004-03-17 | 万恩同 | Water gap without swirl |
| JP2010047795A (en) * | 2008-08-20 | 2010-03-04 | Sumitomo Metal Ind Ltd | Sleeve for tapping hole of converter and method for producing hot metal |
| CN102337376A (en) * | 2010-07-14 | 2012-02-01 | 东北大学 | Vortex suppressing steel-tapping hole for converter |
| CN204434651U (en) * | 2015-01-04 | 2015-07-01 | 中冶南方工程技术有限公司 | Suppress the converter taphole of eddy current slag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922328A (en) * | 2020-09-04 | 2020-11-13 | 江苏隆达超合金航材有限公司 | Novel pouring nozzle for pouring high-temperature alloy master alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105921734B (en) | A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning | |
| CN206305443U (en) | Ladle nozzle argon gas blowing device | |
| CN202490928U (en) | Extended nozzle device capable of eliminating inclusions for tundish | |
| CN203565812U (en) | Tundish flow stabilizer | |
| CN106282482A (en) | A kind of molten steel export structure | |
| CN209550526U (en) | A kind of sprue cup solving the heat-resisting steel casting slag inclusion cold shut defect of thin-walled | |
| CN209379873U (en) | A kind of bottom filling purifying smelting device | |
| CN107598147B (en) | Plastic composite molten steel protection pouring sealing method | |
| CN202688360U (en) | Converter steel tapping slag stopping device | |
| CN110453043B (en) | Top-blowing argon gun | |
| CN106825529A (en) | Ferronickel cast iron unit | |
| CN204434651U (en) | Suppress the converter taphole of eddy current slag | |
| CN208995527U (en) | Ladle bottom blowing air brick | |
| CN203470831U (en) | Filter device for investment casting | |
| CN204438810U (en) | Bottom blowing copper smelter feed inlet device | |
| CN204381361U (en) | A kind of submersed nozzle of Novel argon blowing structure | |
| CN108941481B (en) | Method and device for reducing temperature drop of molten iron | |
| CN202621864U (en) | Continuous casting ladle protection sleeve | |
| CN107983943B (en) | A kind of system and method improving tundish Cleanliness of Molten Steel under unstable state state | |
| CN207086890U (en) | Ferronickel cast iron unit | |
| CN201217667Y (en) | Slag blocking wimble for steel-smelting | |
| CN102632228A (en) | Tundish of slag baffling device containing liquid outlet | |
| CN206305441U (en) | Can be with the ladle pocket block of Argon | |
| CN204912739U (en) | Middle packing is put with streamlined lateral wall | |
| CN204052869U (en) | A kind of device for controlling flow of ladle for sheet blank continuous casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Ma'anshan, Anhui Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |