CA1244216A - Side mounted lance for ladles - Google Patents
Side mounted lance for ladlesInfo
- Publication number
- CA1244216A CA1244216A CA000501200A CA501200A CA1244216A CA 1244216 A CA1244216 A CA 1244216A CA 000501200 A CA000501200 A CA 000501200A CA 501200 A CA501200 A CA 501200A CA 1244216 A CA1244216 A CA 1244216A
- Authority
- CA
- Canada
- Prior art keywords
- ladle
- body member
- elongated
- lance
- tubular member
- 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.)
- Expired
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A lance for bubbling gas into molten metal in a ladle having a protective refractory lining on the bottom and side walls thereon. The lance consists of an elongated refractory body member of a shape matching a vertical groove in the refractory lining in the side wall of the ladle The lance has at least one tubular member positioned axially therein and extending outwardly of one end thereof and communi-cating with at least one opening in said elongated body member inwardly of the opposite end thereof, said opening facing the interior of the ladle and a connection for introducing gas into said tubular member.
A lance for bubbling gas into molten metal in a ladle having a protective refractory lining on the bottom and side walls thereon. The lance consists of an elongated refractory body member of a shape matching a vertical groove in the refractory lining in the side wall of the ladle The lance has at least one tubular member positioned axially therein and extending outwardly of one end thereof and communi-cating with at least one opening in said elongated body member inwardly of the opposite end thereof, said opening facing the interior of the ladle and a connection for introducing gas into said tubular member.
Description
SLD~ MOUNTED LANCE FOR LADL~S
Descrip-tion of the Inven-tion Technical Field:
This invention relates to apparatus :Eor bubbling nitrogen -through molten metal in a ladle.
Background Art:
Apparatus for in-troducing gases into mol-te~ me-tal ~or various purposes are disclosed in U.S. Pa-tents 3,230,075 and 3,945,820 which disclose immersion lances for re-fining metal melts in hearth-type vessels. Apparatus for intro-ducing gas in-to a ladle is disclosed in Paten-t 3,961,779 and a lance use~ul for the same practice is disclosed in Patent 4,179,103. A lance ~or reiining a melt by means o~
of a pulverous solid material and a carrier gas is disclosed in Patent 4,211,553 and a lance for a similar purpose posi-tioned in a ladle in spaced relation to the side wall thereof is disclosed in Patent 4,389,245 in which one form of the lance is combined with a vertically movable stopper.
In the prior art Patents 3,230jO75 and 3,945,820, the lances are introduced through an angularly arranged opening in -the side wall of a hearth vessel and a simllar _3_ ~ "
ar:ran~ement for introcluci}l~ a lance in-to a ladle is discl.osed in Pa-tent 3,961,779. The o-ther prior art inve~tions referred -to hereinbefore are arranged to be posi-tioned direc-tly into -the open top o-E the ladle and no prior art is known wherein a modified lance construc-tion enables it to be incorporated in the refractory side wall lining of a ladle so as to be securely posi-tioned in a desired loca-tion so -tha-t the bubbling nitogen emerging -therefrom will always crea-te a desired stirring action in the me-tal in the ladle as essential in deoxidizing and desulphurizing or o-therwise treating the metal, as the case may be.
Summary of the Invention The present invention provides a nitogen bubbling lance having an elongated refractory body member which is cross sectionally square and/or rectangular and particularly suited for positioning in a vertical groove in the refractory lining of a ladle in which molten metal is transported. A
tubular member extends longitudinally o the lance and communicates with one or more openings therein which are arranged in oppositely disposed rela-tion to the. side wall of the lacl:le ancl the openings may be pl.ugged with soli.tl or porous plugs. The tubula-.r member ex-tends ou-twardly of the upper end of -the lance for establishing communication wi-th a source of nitrogen which when in-troduced in-to -the lance will emerge in control.led jet-like streams from the opening or openings therein to create a highly desirable s-tirring ac-tion in the molten metal being -transpor-ted by the ladle.
Description of the Drawings Figure 1 is a side eleva-tion of a portion of a ladle showing the side mounted lance positioned therein with parts broken away;
Figure 2 is an enlarged side elevation of the side mounted lance with parts broken away and parts in cross section;
Figure 3 is a horizontal section on line 3-3 of Figure 1 and Figure 4 is a horizontal section on line 4-4 of Figure 2.
Description of -the Preferred ~mbodiment By referring to the drawillgs and Figures 1 and 3 in particular, i-t will be seen that a portion of a ladle 10 . .
~2'~Z~;
has been disclosed which is a vessel of any sui-table or conven-tional construc-tion as well known in the s-teel making industry. The ladle 10 has a protective refrac-tory lining 11 such as refractory bri.ck or the like. The side wall of -the lad].e 10 has a substantially vertical groove 12 formed -therein in which the side mounted lance is positioned. The lance comprises an elongated refractory body member generally indicated a-t 13 and having an upper portion 14 which is cross sectionally square and a lower por-tion 15 whi.ch is cross sectionally rectangular. A tubular member 1~ formed of pipe is positioned longitudinally in the elongated refractory body member of the lance 13 and extends outwardly of the upper end 17 thereof and terminates inwardly of the lower end 18 thereof.
By referring -to Figure 3 of -the drawings, it will be seen that one sur~ace o~ the lance 13 is positioned -Flush against the back of the groove 12 in the refractory lining 11 of the ladle and that rammed refractory material is positioned be-tween the walls of the groove 12 and the oppositely disposed side walls of the lance 13 so as to hold " `
. . ~ .
Z~
i-t securely in posi-tlon.
By re~erring to Figures 1 and 3 oE the drawings, it will be seen that the upper por-tion 1~ o~ the lance 13 is posi-tioned within -the Kroove 12 o:E -the refractory l.i.ning 11 in the ladle and -that a holding clevice in the ~orm a clip 19 is at-tached -to the lance 13 and extends outwardly and over the upper edge o~ the ladle 10.
By re~erring now to Figure 2 of the drawings, it will be seen tha-t the tubular member 16 which termina-tes inwardly o~ the lower end 1~ oE -the lance carries several circumf'erentially spaced reinforcing shapes 20 and Eorms a tubular passageway in whi.ch a coaxially positioned smaller tubular member 21 is positioned. A 90 elbow 22 communicates with the lowe:r end o~ the tublar rnember 21 and communicates with a -Eitting 23 which in turn communicates with a cavity 24 in which a porous plug 25 is positioned. The -tubular member 21 is spaced with respec-t to the tubular member 16 by washers 26. ReinEorcing bars 27 are welded at their upper ends to the exterior oE the tubular member 16 and are shaped so as to extend ou-twardly thereo~ and downwardly , therebelow to a point inwardly o:E the lower end 18 o:E I;he lowe.r por-tion 15 o~ the lance 13.
By re.Eerring to Figure 4 o~ the drawings, a horizontal sec-tion of -the Lower portion 15 of -the lance 13 illustra-tes -the spacing of the several rei.n-rorcing rods 27.
S-till referring to Figure 2 of -the drawings, it will be seen that the upper end of -the smal.ler tubular member 21 extends ou-twardly oi -the upper end of the larger tubular member 16 and is spaced with respect thereto by the washer 26. It will also be seen tha-t an inverted U-shaped handle 28 including a cross member 29 is affixed to the upper outer surface o~ the larger tubular member 16 and extends above the upper end of the smaller tubular member 21 so that -the lance can be conveniently attached to a supportin~ and posi-tioning device and held thereby agains-t -the side wall~
of the ladle in the groove 12 while the same is being secured there-to by the clip 19 and -the refractory cement-like binder heret~fore re~erred to.
In Figure 2 o~ the drawings, a single cavity 24 is lllus-trat-d w th a single porous plug 25 therein through which , .
:;~LZ44Z~1~6 gas, such as ni-trogen, introduced into the upper end oe -the smaller -tubular member 21 wil] flow outwardly into the mol-ten metal in -the ladle. Al.ternately addi.tional plugged or unplugged openings may be provided as illustra-ted in broken lines in Figure 1 o e -the drawings wherein two such cavi-ties are illustrated with porous plugs 25 therein. The openings defined by the cavi-ties 24 and the porous plugs 25 are loca-ted in the side of the lance facing the interior of the ladle and the lance 13 is posi-tioned on the trans-verse cen-ter.line of the ladle opposi-te the pouring spout of -the ladle as will be understood by those skilled in the art.
It will thus be seen that a novel and highly efficien-t side mounted lance eor a transpor-t ladle for molten metal, such as s-teel, has been disclosed in which the lance has a novel configuration and is so posi-tioned in the ladle as to occupy a minimum of space therein and at the same time insure the desired direction of the gas introduced there-tnrough into -the molten metal.
~laving thus disclosed my invention, what I claim is:
_g_
Descrip-tion of the Inven-tion Technical Field:
This invention relates to apparatus :Eor bubbling nitrogen -through molten metal in a ladle.
Background Art:
Apparatus for in-troducing gases into mol-te~ me-tal ~or various purposes are disclosed in U.S. Pa-tents 3,230,075 and 3,945,820 which disclose immersion lances for re-fining metal melts in hearth-type vessels. Apparatus for intro-ducing gas in-to a ladle is disclosed in Paten-t 3,961,779 and a lance use~ul for the same practice is disclosed in Patent 4,179,103. A lance ~or reiining a melt by means o~
of a pulverous solid material and a carrier gas is disclosed in Patent 4,211,553 and a lance for a similar purpose posi-tioned in a ladle in spaced relation to the side wall thereof is disclosed in Patent 4,389,245 in which one form of the lance is combined with a vertically movable stopper.
In the prior art Patents 3,230jO75 and 3,945,820, the lances are introduced through an angularly arranged opening in -the side wall of a hearth vessel and a simllar _3_ ~ "
ar:ran~ement for introcluci}l~ a lance in-to a ladle is discl.osed in Pa-tent 3,961,779. The o-ther prior art inve~tions referred -to hereinbefore are arranged to be posi-tioned direc-tly into -the open top o-E the ladle and no prior art is known wherein a modified lance construc-tion enables it to be incorporated in the refractory side wall lining of a ladle so as to be securely posi-tioned in a desired loca-tion so -tha-t the bubbling nitogen emerging -therefrom will always crea-te a desired stirring action in the me-tal in the ladle as essential in deoxidizing and desulphurizing or o-therwise treating the metal, as the case may be.
Summary of the Invention The present invention provides a nitogen bubbling lance having an elongated refractory body member which is cross sectionally square and/or rectangular and particularly suited for positioning in a vertical groove in the refractory lining of a ladle in which molten metal is transported. A
tubular member extends longitudinally o the lance and communicates with one or more openings therein which are arranged in oppositely disposed rela-tion to the. side wall of the lacl:le ancl the openings may be pl.ugged with soli.tl or porous plugs. The tubula-.r member ex-tends ou-twardly of the upper end of -the lance for establishing communication wi-th a source of nitrogen which when in-troduced in-to -the lance will emerge in control.led jet-like streams from the opening or openings therein to create a highly desirable s-tirring ac-tion in the molten metal being -transpor-ted by the ladle.
Description of the Drawings Figure 1 is a side eleva-tion of a portion of a ladle showing the side mounted lance positioned therein with parts broken away;
Figure 2 is an enlarged side elevation of the side mounted lance with parts broken away and parts in cross section;
Figure 3 is a horizontal section on line 3-3 of Figure 1 and Figure 4 is a horizontal section on line 4-4 of Figure 2.
Description of -the Preferred ~mbodiment By referring to the drawillgs and Figures 1 and 3 in particular, i-t will be seen that a portion of a ladle 10 . .
~2'~Z~;
has been disclosed which is a vessel of any sui-table or conven-tional construc-tion as well known in the s-teel making industry. The ladle 10 has a protective refrac-tory lining 11 such as refractory bri.ck or the like. The side wall of -the lad].e 10 has a substantially vertical groove 12 formed -therein in which the side mounted lance is positioned. The lance comprises an elongated refractory body member generally indicated a-t 13 and having an upper portion 14 which is cross sectionally square and a lower por-tion 15 whi.ch is cross sectionally rectangular. A tubular member 1~ formed of pipe is positioned longitudinally in the elongated refractory body member of the lance 13 and extends outwardly of the upper end 17 thereof and terminates inwardly of the lower end 18 thereof.
By referring -to Figure 3 of -the drawings, it will be seen that one sur~ace o~ the lance 13 is positioned -Flush against the back of the groove 12 in the refractory lining 11 of the ladle and that rammed refractory material is positioned be-tween the walls of the groove 12 and the oppositely disposed side walls of the lance 13 so as to hold " `
. . ~ .
Z~
i-t securely in posi-tlon.
By re~erring to Figures 1 and 3 oE the drawings, it will be seen that the upper por-tion 1~ o~ the lance 13 is posi-tioned within -the Kroove 12 o:E -the refractory l.i.ning 11 in the ladle and -that a holding clevice in the ~orm a clip 19 is at-tached -to the lance 13 and extends outwardly and over the upper edge o~ the ladle 10.
By re~erring now to Figure 2 of the drawings, it will be seen tha-t the tubular member 16 which termina-tes inwardly o~ the lower end 1~ oE -the lance carries several circumf'erentially spaced reinforcing shapes 20 and Eorms a tubular passageway in whi.ch a coaxially positioned smaller tubular member 21 is positioned. A 90 elbow 22 communicates with the lowe:r end o~ the tublar rnember 21 and communicates with a -Eitting 23 which in turn communicates with a cavity 24 in which a porous plug 25 is positioned. The -tubular member 21 is spaced with respec-t to the tubular member 16 by washers 26. ReinEorcing bars 27 are welded at their upper ends to the exterior oE the tubular member 16 and are shaped so as to extend ou-twardly thereo~ and downwardly , therebelow to a point inwardly o:E the lower end 18 o:E I;he lowe.r por-tion 15 o~ the lance 13.
By re.Eerring to Figure 4 o~ the drawings, a horizontal sec-tion of -the Lower portion 15 of -the lance 13 illustra-tes -the spacing of the several rei.n-rorcing rods 27.
S-till referring to Figure 2 of -the drawings, it will be seen that the upper end of -the smal.ler tubular member 21 extends ou-twardly oi -the upper end of the larger tubular member 16 and is spaced with respect thereto by the washer 26. It will also be seen tha-t an inverted U-shaped handle 28 including a cross member 29 is affixed to the upper outer surface o~ the larger tubular member 16 and extends above the upper end of the smaller tubular member 21 so that -the lance can be conveniently attached to a supportin~ and posi-tioning device and held thereby agains-t -the side wall~
of the ladle in the groove 12 while the same is being secured there-to by the clip 19 and -the refractory cement-like binder heret~fore re~erred to.
In Figure 2 o~ the drawings, a single cavity 24 is lllus-trat-d w th a single porous plug 25 therein through which , .
:;~LZ44Z~1~6 gas, such as ni-trogen, introduced into the upper end oe -the smaller -tubular member 21 wil] flow outwardly into the mol-ten metal in -the ladle. Al.ternately addi.tional plugged or unplugged openings may be provided as illustra-ted in broken lines in Figure 1 o e -the drawings wherein two such cavi-ties are illustrated with porous plugs 25 therein. The openings defined by the cavi-ties 24 and the porous plugs 25 are loca-ted in the side of the lance facing the interior of the ladle and the lance 13 is posi-tioned on the trans-verse cen-ter.line of the ladle opposi-te the pouring spout of -the ladle as will be understood by those skilled in the art.
It will thus be seen that a novel and highly efficien-t side mounted lance eor a transpor-t ladle for molten metal, such as s-teel, has been disclosed in which the lance has a novel configuration and is so posi-tioned in the ladle as to occupy a minimum of space therein and at the same time insure the desired direction of the gas introduced there-tnrough into -the molten metal.
~laving thus disclosed my invention, what I claim is:
_g_
Claims (7)
1. Apparatus for bubbling gas into molten metal in a ladle having a protective refractory lining on the bottom and side walls thereon, said apparatus comprising a lance consisting of an elongated refractory body member of a configuration registering with a vertical groove in the re-fractory lining in the side wall of said ladle, at least one tubular member positioned axially of said elongated body member and extending outwardly of one end thereof and communi-cating with at least one opening in said elongated body member inwardly of the opposite end thereof, said opening facing the interior of said ladle and means for introducing gas into said tubular member.
2. The apparatus for bubbling gas into molten metal, in a ladle set forth in claim 1 and wherein there are two tubular members, one of which is of a larger diameter than the other, said tubular members being positioned coaxially and wherein the smaller tubular member communicates with said opening and the means for introducing gas.
3. The apparatus for bubbling gas into molten metal in a ladle set forth in claim 1 and wherein said elongated refractory body member has upper and lower portions, the upper portion being cross sectionally square and the lower portion being cross sectionally rectangular and wherein the groove in the refractory lining in the side wall of the ladle defines a cross sectionally square cavity of a size substantially the same as the cross sectionally square upper portion of said elongated body member.
4. The apparatus for bubbling gas into molten metal in a ladle set forth in claim 1 and wherein at least one reinforcing bar is affixed to said tubular member and extends within said elongated body member beyond said opening therein in oppositely disposed relation to said tubular member.
5. The combination of a transport ladle for molten metal such as steel and a lance for bubbling gas into said molten metal, said transport ladle having bottom and side walls and a protective refractory lining thereon, said lance consisting of an elongated refractory body member of a configuration registering with a vertical groove in the refractory lining in the side wall of the ladle and with a cavity in the refractory lining on the bottom of said ladle adjacent said groove, at least one tubular member positioned axially of said elongated refractory body member and extending outwardly of one end thereof and communicating with at least one opening in said elongated refractory body member inwardly of the opposite end thereof, said opening facing the interior of said ladle, means for securing said lance in said vertical groove and cavity in the protective refractory lining of said ladle and means for introducing gas into said tubular member.
6. The combination set forth in claim 5 and wherein there are two tubular members, one of which is of a larger diameter than the other, said tubular members being positioned coaxially and wherein the smaller tubular member communicates with said opening and the means for introducing gas.
7. The combination set forth in claim 5 and wherein said elongated refractory body member has upper and lower portions, the upper portion being cross sectionally square and the lower portion being cross sectionally rectangular and wherein the elongated groove in the refractory lining in the side wall of the ladle defines a cross sectionally square cavity of a size substantially the same as the cross sectionally square upper portion of said elongated body member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000501200A CA1244216A (en) | 1986-02-05 | 1986-02-05 | Side mounted lance for ladles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000501200A CA1244216A (en) | 1986-02-05 | 1986-02-05 | Side mounted lance for ladles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1244216A true CA1244216A (en) | 1988-11-08 |
Family
ID=4132420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000501200A Expired CA1244216A (en) | 1986-02-05 | 1986-02-05 | Side mounted lance for ladles |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1244216A (en) |
-
1986
- 1986-02-05 CA CA000501200A patent/CA1244216A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR870010202A (en) | Melting furnaces and metal melting methods | |
| US4588170A (en) | Side mounted lance for ladles | |
| US4741515A (en) | Apparatus for introducing gas into a metallurgical vessel | |
| CA1244216A (en) | Side mounted lance for ladles | |
| US4840356A (en) | Externally replaceable stirring plug for molten metal vessels | |
| AU661300B2 (en) | Taphole design and pouring method | |
| US4740241A (en) | Dual action lance for ladles | |
| GB2218110A (en) | Flushing block for introducing gases or solids into a treatment vessel | |
| CA2376066A1 (en) | Discharge channel for melting furnaces and pouring ladles | |
| JPH0449169Y2 (en) | ||
| Cullen et al. | Purifying Molten Metal Using a Nozzle Block Having a Gas Receiving Channel | |
| CA1258371A (en) | Air cooled refractory lance | |
| FR2619396B1 (en) | STEEL POCKET BREWING PROCESS USING CARBONIC ANHYDRIDE | |
| Lee | An Innovative Approach to Hot Metal Desulfurization in Hot Metal Transfer Ladles | |
| Turkdogan | Ladle deoxidation, desulphurisation and inclusions in steel–Part 2: Observations in practice | |
| CA1311920C (en) | Externally replaceable stirring plug for molten metal vessels | |
| Carlsson et al. | Mass transfer between slag and metal phases in gas or inductively-stirred melts: a comparison on a 6 ton scale | |
| Klisiewicz et al. | The Effect of Gas Flushing Treatment in the Desulphuration of Steel Melts in the Ladle Using Solids | |
| CA1319822C (en) | Slag controlling device for basic oxygen furnaces | |
| Lanchava et al. | Refining of Liquid Foundry Pig Iron Casting Production | |
| Marcuson et al. | Converter and method for top blowing nonferrous metal | |
| CA1313952C (en) | Stirring brick with shaped gas volume control openings | |
| Yu | Practice of denitrification process in 100 t vacuum ladle furnace | |
| Jhunjhunwala et al. | Advances in alumina carbon refractories | |
| JP2576286Y2 (en) | Gas injection porous plug for metallurgy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |