CN1525894A - Device for preventing a vortex effect in the discharge area of a metallurgical melting vessel - Google Patents

Device for preventing a vortex effect in the discharge area of a metallurgical melting vessel Download PDF

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Publication number
CN1525894A
CN1525894A CNA028073975A CN02807397A CN1525894A CN 1525894 A CN1525894 A CN 1525894A CN A028073975 A CNA028073975 A CN A028073975A CN 02807397 A CN02807397 A CN 02807397A CN 1525894 A CN1525894 A CN 1525894A
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CN
China
Prior art keywords
described device
outlet position
designed
hole
lengthening section
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Granted
Application number
CNA028073975A
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Chinese (zh)
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CN1254335C (en
Inventor
埃瓦尔德・舒马赫
埃瓦尔德·舒马赫
啄
H·布伦纳
啬
C·阿特纳
�卓
G·布雷卡
・舒马赫
埃德加·舒马赫
即幕
R·弗兰茨基
宀宁
V·克洛波宁
品蛩够
I·青科夫斯基
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RHI AG
Techcom Import Export GmbH
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RHI AG
Techcom Import Export GmbH
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Publication of CN1525894A publication Critical patent/CN1525894A/en
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Publication of CN1254335C publication Critical patent/CN1254335C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Extrusion Of Metal (AREA)

Abstract

The invention relates to a device comprised of a refractory ceramic material and provided for preventing a vortex effect in the discharge area of a metallurgical melting vessel. The device has a base part to which a cylindrical extension having at least one opening on the wall connects. The opening is arranged in such a manner that, after the device has been placed in the discharge area of the melting vessel, it is located at a distance from the bottom of the melting vessel and creates a connection to the discharge area of the melting vessel.

Description

Be used for stoping the device that produces eddy current effect at metallurgy melt container outlet position
The present invention relates to a kind of device that produces eddy current effect at the outlet position of a metallurgy melt container that is used for stoping.For example can see the phenomenon of the so-called eddy current that forms repeatedly at a kind of outlet position that is used to handle the so-called tundish (intermediate receptacle) of molten steel.It forms mobile whirlpool when steel solution is discharged.Just make liquation produce a kind of out of contior flowing before tapping hole and/or by tapping hole, its consequence is: the slag that floats on the liquation partly is taken together.
Stop or be that the nonmetallic impurity that reduces in molten metal is a primary target at least, especially in the scope of second metallurgy.Therefore and have no lack of test and come to make viewed eddy current become minimum or stop its generation by various measure.This comprises with the fire retarding component outlet position of packing into, for example at the position of an idle stroke nozzle.
At US 5,382, advised a kind of so fire-resistant body among 003 A, it is placed at the end of metallurgical tank, around outlet.The shape that this fire-resistant body has a kind of " three leg ", wherein these " legs " just prop up on the end of metallurgy melt container.
Task of the present invention is to propose a kind of possibility, can stop liquation to produce eddy current at a kind of outlet position of metallurgy melt container at least under normal operation reliably with it.
Basic thought of the present invention is to use a kind of device of being made by a kind of refractory ceramic material, and this device is arranged in the outlet position of metallurgy melt container and covers this outlet position.So just reduced iron hydrostatic power pressure at the outlet position.
This device should have one or more holes in addition, and the liquation that is in the melt vessel can pass these orifice flows to the outlet of container position, that is to say to flow to tapping hole.
The basic part of this device is used for making liquation to be diverted to the outlet position on its way.The extension element that is connected on this basic part is used as " broken stream device ", that is to say to make liquation stream be divided into a plurality of separated tributaries.The setting of hole site should make its bottom surface of (in metallurgical tank) and container under the state of device assembling back that spacing is arranged.Can reach with the spacing of bottom level (tapping hole level disappear) thus＞20mm and＜200mm, for example 30 to 60,60 to 80 or 70 to 100mm.
Thereby formed a kind of obstacle to liquation.Therefore this device is unnecessary with regard to making that a kind of so-called use of starting pipe becomes.Be contained in the liquation in this container and/or the slag of front and all when tapping hole flows out, be subjected to obstruction, until melting liquid horizontal has reached till the base in the nearest hole of container bottom.
Produced metallurgical solution in a word simultaneously its turning to and shunting in the stroke that flows of outlet.Preliminary test has been found that and in fact can stop described eddy current to generate fully.
Relate to a kind of device that is used to stop in the outlet position of metallurgy melt container generation eddy current effect in the most general form of implementation of the present invention, its feature is as follows:
-this device is made by a kind of refractory ceramic material;
-device includes a bare bones;
-on this bare bones, being connected with a columnar extension element, it has the hole of at least one wall side;
-hole is so arranged, makes to make hole to container bottom that a distance be arranged after the outlet position that this device is placed in melt vessel, and sets up a kind of the connection with the outlet position of melt vessel.
Predesignating of above-mentioned general configuration aspects to this device design can be achieved in various concrete form of implementation.
Mention the extension element of a kind of " cylindrical shape ", this means " columnar substantially ", and comprised for example bulge shape, polygon cross section or analogous shape.
This device can be designed to cover cap shape form, and it is placed at the end of metallurgy melt container, wherein exports the position and has just been covered fully.In other words: in the cross sectional area that has a level on the container bottom at least on a position, this area is the same big with the cross sectional area at outlet position in the surperficial position of (bottom level) at the bottom of the melt vessel at least at formed cavity under the cover cap.This cavity is limited by this described extension element in a circumferential direction, and end face is then limited by the bare bones of device.
Arrive the outlet position in order to make liquation flow through this cover cap, be provided with mentioned through hole/hole in wall portion.Distribute regularly in wall portion according to a kind of form of implementation and to be provided with a plurality of such holes.
If it is rotational symmetric that this device is designed to, that is to say that with respect to an axis of imaginaries (axis of symmetry) by its center of gravity layout be rotational symmetric, the optimization that has just realized the liquation distributions just makes mobile each tributary that is divided into of molten metal.It is an imaginary central longitudinal axis with respect to the whole device in other words of extension element that this symmetry equally also can be defined as.
Following the description of the drawings discloses some details of possible form of implementation.
The basic part of device can be with respect to extension element, and it is protruding exporting the position in other words, thereby this cover cap is a kind of mitriform form, wherein the wall position of extension element can be basically cylindrical shape be connected on the bare bones.
Cover structure has comprised some versions, wherein according to a kind of segment form, according to a kind of rectangular parallelepiped form, design this device according to a kind of pyramid form or according to a kind of drum forms.Equally also can be asymmetric shape and cross section, perhaps cover cap can have recessed top cover face (with respect to the outlet position).These holes can be designed to have the passage of different lead.
The geometry of this device and part thereof just can change in the wide limit, and depends on use occasion separately.These holes (interface channel) can have a kind of semicircle or full circle cross section, and straight line or curve shape ground also can be arranged in a position of pointing to around the device central longitudinal axis involute shape under a stable condition.Same these holes also can be designed to the line of rabbet joint, and these lines of rabbet joint are arranged on the axial direction of device (axial direction of tapping hole) substantially.As asymmetric shape and cross section, can be the shape and the cross section of symmetry.
Total cross sectional area according to these holes of a kind of form of implementation should be greater than the cross sectional area at melt vessel lower surface height upper outlet position.
This device can be designed to tapered reduction being positioned on that end on bare bones opposite.If this shape is corresponding to (inside) shape of tapping hole, this device just can easily be settled so, for example also can fix or be bonded in the tapping hole position by mortar.A kind of connection of form fit also is special sealing.The special-shaped shape that is pressed on the end part outer surface of device is helpful herein.Accompanying drawing shows some examples.
A principal character of the present invention is: device can be whole also can making in a technical process.Even a kind of structure with end part of tapered reduction also is like this.Known manufacture method that relates to such as slip-casting (if pottery) or burn the material of temporarily packing into and be used for forming cavity.
The spacing of the tapping hole on bare bones and the bottom level height is generally less than 250mm.The selection of the cross sectional area of bare bones should make its above-mentioned import that all covers tapping hole in all directions 20mm approximately at least, and wherein the level of coverage of 100mm generally may be just enough.
All the other features of the present invention are seen feature in the dependent claims and other application materials.
Followingly the present invention is carried out detailed narration according to each embodiment that does not have.
Shown in accompanying drawing all be the skeleton diagram of simplifying very much:
Fig. 1: there is a kind of by device of the present invention of two kinds of selectable planforms a longitudinal cross-section of the part by metallurgy melt container at the outlet position of bottom;
Fig. 2: be similar to the view of Fig. 1, but be used for the 3rd embodiment.
Identical in the accompanying drawings or act on identical member and represent with identical drawing reference numeral.
Label 10 has been represented a kind of metallurgy melt container, has been at the bottom of of a kind of distributor (tundish) herein among Fig. 1.The end 10 that forms by the refractory material of common kind outside (bottom surface) limit by a steel sleeve 12.Two sprue bricks 14 expressed in 10 li summarys the end of at, and they all have the tap hole 16 at a center, and the upper end that this Kong Zaiqi end face points to molten metal 18 is designed to funnelform.Draw the end of at 10 surface 10 thus oThe diameter of position tap hole 16 " d ".
Each outlet position 16 is covered by a device 20, wherein at first the device shown in the left side 20 among the figure is illustrated:
That this device is designed to cover cap shape and have a bare bones 20b with respect to sprue brick 14 projectioies, on this bare bones, connect one and be columnar lengthening section (20w of wall portion) substantially, (bottom) free end of this lengthening section is placed on the surface 10 at the end 10 oOn.
Evenly be distributed with a plurality of holes 22 at the 20w of wall portion with circular cross sections.To bottom level 10 oDistance represent with " h " and reach 72mm.
Molten metal 18 turns to and (be 8 this moment corresponding to the quantity in hole 22 around bare bones 20b to the path of tap hole 16 at it, they are evenly distributed on the circumference of the 20w of wall portion) be distributed into 8 tributaries, these tributaries feed in the common cavity 20h, this cavity end face is limited by bare bones 20b, the side is with the 20w of mesospore portion, and the bottom surface is then partly limited by the end 10.
Because just having stoped the generation vortex phenomenon reliably and be delivered to with making molten metal 18 no eddy current, the reallocation of this liquid stream flows out position 16.
In the hole 20 and bottom surface 10 oBetween the section 20s of portion stoped liquation or slag uncontrollably to flow out, especially when beginning to pour into.
The represented device 20 in Fig. 1 the right has a bare bones 20b equally, and it is designed to a kind of form of plate of circle, has a columnar lengthening section 20w to stretch out towards the direction at the end 10 of melt vessel thus, and wherein the 20w of this wall portion is placed on the surface 10 at the end 10 again oOn.
Described embodiment is provided with many through holes (connecting hole) 22 before being similar in lengthening section (wall portion) the 20w position, these holes are designed to have the passage shape of circular cross sections and have a lift that tilts to be directed upwards towards cavity 20h separately, as by angle α sign (α=35 °).
The effect that can reach with this device is equivalent to the device shown in Fig. 1 left side substantially.Liquation 18 also is divided into the tributary herein, and these tributaries flow in the cavity 20h through these connecting holes 22 and the outlet position 16 of flowing through is therefrom left.The 20s of wall portion is used to make this device can play a kind of effect of starting pipe.
By in two kinds of forms of implementation of Fig. 1 as seen: device 20 bare bones 20b separately with certain pitch arrangement on the end 10, and lengthening section 20w at each to spacing is all arranged having surrounded the tap hole 16 that is used for molten metal, wherein with the edge of tap hole 16 to the distance of the inwall of lengthening section 20w greater than 10 surface 10 end of at oThe diameter d of the tap hole 16 at position.
Fig. 2 has represented another kind of alternative form of implementation, equally also can be applicable to by a kind of melt vessel shown in Figure 1 as it.
Device 20 shown in Figure 2 is similar to the flexible program shown in Fig. 1 right side, and has following characteristics: (level) cross section is less and be connected with an end segments 20e on columnar wall section 20w, and it opens wide downwards and tapered dwindling.The outline of end segments 20e is roughly corresponding to the interior profile of end face tapping hole spare, thereby this device 20 just can be placed in to form fit in the end face tapping hole spare, wherein has one deck mortar bed 50 to compensate tolerance.The surface abnormity structure 20p of end segments 20e makes to connect and reaches best.Individual aperture 60 is arranged on bare bones 20b, and it can make the gas that may be gathered in the cavity 20h flow out.Hole 60 can form by burning the filling member of inserting in the original place during fabrication.
Described device can be the refractory piece of casting.Equally also can push or tamping these parts according to the difference of form of implementation.Application conditions is separately depended in the correct selection of different fire-resistant kinds.Refractory material is not proposed special requirement.Usually it must be resistant to elevated temperatures and corrosion resistant as far as possible, but also will have favourable ductility.

Claims (11)

1. be used to stop the device of locating to produce eddy current effect at the outlet position (16) of metallurgy melt container, it has following feature:
1.1 this device is made by a kind of fire-resistant ceramic material;
1.2 this device comprises a bare bones (20b);
1.3 on bare bones (20b), be connected with a cylindrical shape lengthening section (20w) with at least one wall side opening (22);
1.4 hole (22) so arrange, makes to guarantee that there is a distance at after this device is placed in the lining, outlet position (16) of melt vessel this hole to the end (10) of melt vessel, and set up to a kind of connection at the outlet position (16) of melt vessel.
2. by the described device of claim 1, wherein, the regular distribution in the wall position of lengthening section (20w) arranged a plurality of holes (22).
3. by the described device of claim 1, it is designed to be rotational symmetric with respect to the longitudinal axis of lengthening section (20w) (L).
4. by the described device of claim 1, wherein, bare bones (20b) is an evagination with respect to lengthening section (20w).
5. by the described device of claim 1, wherein, the total cross sectional area of hole (22) is greater than the end face (10 at the end (10) of affiliated melt vessel o) the cross sectional area at height upper outlet position (16).
6. by the described device of claim 1, wherein, these holes (22) have a kind of cross section of circle.
7. by the described device of claim 1, wherein, these holes (22) are designed to the slot formula.
8. by the described device of claim 1, wherein, lengthening section (20w) is transited into a kind of diminishing end part (20e) of taper.
9. according to the described device of claim 8, wherein, end part (20e) is designed to the shape corresponding to melt vessel outlet position (16).
10. by the described device of claim 8, wherein, the outside of end part (20e) is designed to polymorphic structure.
11. by the described device of claim 1, wherein, bare bones (20b), lengthening section (20w) and be designed to all at the end part (20e) that perhaps has that material is connected.
CN 02807397 2001-03-27 2002-03-16 Device for preventing a vortex effect in the discharge area of a metallurgical melting vessel Expired - Fee Related CN1254335C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001115097 DE10115097A1 (en) 2001-03-27 2001-03-27 Device for preventing a vortex effect in the outlet area of a metallurgical melting vessel
DE10115097.0 2001-03-27

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CN1525894A true CN1525894A (en) 2004-09-01
CN1254335C CN1254335C (en) 2006-05-03

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CN (1) CN1254335C (en)
DE (1) DE10115097A1 (en)
EA (1) EA005063B1 (en)
LV (1) LV13102B (en)
UA (1) UA75398C2 (en)
WO (1) WO2002076658A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102554207A (en) * 2012-01-17 2012-07-11 中冶南方工程技术有限公司 Sliding water gap device capable of preventing vortex
CN102632228A (en) * 2012-04-27 2012-08-15 宜兴市龙宸炉料有限公司 Tundish of slag baffling device containing liquid outlet
CN112108642A (en) * 2020-09-29 2020-12-22 重庆大学 Steel ladle and method for preventing slag entrapment of molten steel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013869A1 (en) 2009-03-18 2010-09-23 Sms Siemag Aktiengesellschaft Metallurgical vessel, in particular electric arc furnace
CN111136255B (en) * 2020-01-20 2022-01-04 武汉科技大学 Flow control structure for inhibiting tundish slag from being discharged
CN111266564B (en) * 2020-03-12 2022-04-05 安徽工业大学 Vortex blocking device for limiting generation of ladle vortex and application thereof
CN112207268B (en) * 2020-10-21 2021-08-31 武汉钢铁有限公司 Circular vortex-resisting device for bottom of steel ladle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6340668A (en) * 1986-08-06 1988-02-22 Nippon Kokan Kk <Nkk> Vessel for molten metal having molten metal outflow port
JPS6372475A (en) * 1986-09-16 1988-04-02 Nkk Corp Molten metal vessel provided with molten metal outflow port
DE8907044U1 (en) * 1989-06-08 1989-08-03 Foseco International Ltd., Birmingham, Gb
US5083754A (en) * 1991-06-20 1992-01-28 Bethlehem Steel Corporation Apparatus for retaining slag during the discharge of molten metal from a tundish
US5171513A (en) * 1992-05-12 1992-12-15 Usx Corporation Refractory article for preventing vortexing in a metallurgical vessel
CA2084845A1 (en) * 1992-12-08 1994-06-09 Roderick I.L. Guthrie Flow control device for the suppression of vortices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102554207A (en) * 2012-01-17 2012-07-11 中冶南方工程技术有限公司 Sliding water gap device capable of preventing vortex
CN102632228A (en) * 2012-04-27 2012-08-15 宜兴市龙宸炉料有限公司 Tundish of slag baffling device containing liquid outlet
CN112108642A (en) * 2020-09-29 2020-12-22 重庆大学 Steel ladle and method for preventing slag entrapment of molten steel

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Publication number Publication date
EA005063B1 (en) 2004-10-28
UA75398C2 (en) 2006-04-17
WO2002076658A1 (en) 2002-10-03
CN1254335C (en) 2006-05-03
DE10115097A1 (en) 2002-10-24
EA200300949A1 (en) 2004-06-24
LV13102B (en) 2004-04-20

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Granted publication date: 20060503

Termination date: 20100316