DE8633343U1 - Device for introducing powdered reagents into a melting pan - Google Patents
Device for introducing powdered reagents into a melting panInfo
- Publication number
- DE8633343U1 DE8633343U1 DE8633343U DE8633343U DE8633343U1 DE 8633343 U1 DE8633343 U1 DE 8633343U1 DE 8633343 U DE8633343 U DE 8633343U DE 8633343 U DE8633343 U DE 8633343U DE 8633343 U1 DE8633343 U1 DE 8633343U1
- Authority
- DE
- Germany
- Prior art keywords
- reagents
- lance
- melting
- outlet nozzles
- torpedo
- 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
- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 23
- 238000002844 melting Methods 0.000 title claims abstract description 14
- 230000008018 melting Effects 0.000 title claims abstract description 14
- 239000000155 melt Substances 0.000 claims abstract description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 101150006573 PAN1 gene Proteins 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
- C21C5/4606—Lances or injectors
- C21C5/4613—Refractory coated lances; Immersion lances
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/06—Constructional features of mixers for pig-iron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Furnace Charging Or Discharging (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Coating By Spraying Or Casting (AREA)
- Manufacture Of Iron (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
■ ■ · ·■ ■ · ·
I ■ · Il · · ·I ■ · Il · · ·
P 6295P6295
Vorrichtung zum Einbringen von pulverförmigen Reagenzien in eine SchmelzpfanneDevice for introducing powdered reagents into a melting pan
Die Neuerung betrifft eine Vorrichtung (entsprechend dem Oberbegriff des Anspruches 1) zum Einbringen von pulverförmigen Reagenzien in eine Schmelzpfanne.The innovation relates to a device (according to the preamble of claim 1) for introducing powdered reagents into a melting pan.
Bei der Eehandlung einer Schmelze mit injizierten pulverförmigen Reagenzien, beispielsweise bei der Roheisenentschwefelung mit einem Kalziumkarbid-Gemisch, kommt es darauf an, die Reagenzien so zuzugeben, daß eine bestmögliche Ausnutzung der Reagenzien in der Schmelze erreicht wird.When treating a melt with injected powdered reagents, for example when desulfurizing pig iron with a calcium carbide mixture, it is important to add the reagents in such a way that the best possible utilization of the reagents in the melt is achieved.
Bisher werden pulverförmige Reagenzien in eine Schmelzpfanne mittels einer geraden Lanze eingebracht, die gegenüber der Vertikalen um einen Winkel von 10° bis 30° geneigt ist und an ihrem in der Schmelze befindlichen Ende eine Austrittsöffnung aufweist, durch die die Reagenzien etwa parallel zur Lanzenachse in die Schmelze eingeblasen werden.Until now, powdered reagents have been introduced into a melting pan using a straight lance that is inclined at an angle of 10° to 30° from the vertical and has an outlet opening at its end in the melt through which the reagents are blown into the melt approximately parallel to the lance axis.
Bei dieser bekannten Ausführung gelangen die aus dem Lanzenende austretenden Reagenzien aufgrund der Neigung der Lanze zunächst nur in die eine Hälfte des Reaktionsraumes. Eine vollständige Verteilung und Homogenisierung über den gesamten Reaktionsraum wird erst im Lajfe einer verhältnismäßig langen Miseh- bzw. Homogenisierzeit erreicht, was die metallurgische Ausnutzung der Reagenzien beeinträchtigt.In this known design, the reagents emerging from the end of the lance initially only reach one half of the reaction chamber due to the inclination of the lance. Complete distribution and homogenization over the entire reaction chamber is only achieved after a relatively long mixing or homogenization time, which impairs the metallurgical utilization of the reagents.
I tI t
I I IlI I II
I I <I I <
Der Neuerung liegt daher die Aufgabe zugrunde, eine Vorrichtung entsprechend dem Oberbegriff des Anspruches 1 so auszubilden, daß die durch die Lanze zugeführten pulverförmigen Reagenzien in kürzestmöglicher Zeit gleichmäßig im gesamten Reektionsrsun1. verteiltThe innovation is therefore based on the task of designing a device according to the preamble of claim 1 in such a way that the powdered reagents supplied through the lance are evenly distributed throughout the entire reaction chamber 1 in the shortest possible time.
Diese Aufgabe wird neuerungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. 10This problem is solved according to the invention by the characterizing features of claim 1. 10
Zweckmäßige Ausgestaltungen der Neuerung sind Gegenstand der Unteransprüche.Appropriate embodiments of the innovation are the subject of the subclaims.
Neuerungsgemäß ist die Lanze somit etwa vertikal angeordnet und an ihrem in der Schmelze befindlichem Ende mit zvei in entgegengesetzte Richtungen weisenden Austrittsdüsen versehen. Diese Austrittsdüsen sind etwa horizontal angeordnet und um einen Winkel zwischen 30° und 60°,vorzugsweise von etwa 45°, gegenüber der Längsachse der Schmelzpfanne gedreht.According to the innovation, the lance is thus arranged approximately vertically and is provided with two outlet nozzles pointing in opposite directions at its end in the melt. These outlet nozzles are arranged approximately horizontally and rotated by an angle of between 30° and 60°, preferably of around 45°, relative to the longitudinal axis of the melting ladle.
Werden die Reagenzien durch eine solche Lanze in die Schmelzpfanne eingeführt, so baut sich sofortIf the reagents are introduced into the melting pan through such a lance, a
in beiden Hälften des Reaktionsraumes eine Strömung auf, die rasch zu einer gleichmäßigen Verteilung der Reagenzien über den gesamten Reaktionsraum führt. Auf diese Weise ergibt sich ein verbesserter Kontakt zwischen den Reagenzien undin both halves of the reaction chamber, a flow is created that quickly leads to an even distribution of the reagents over the entire reaction chamber. This results in improved contact between the reagents and
der Schmelze. Obsrkonzentrationen der injizierten Reagenzien in einzelnen Bereichen des Reaktions-of the melt. Obsr concentrations of the injected reagents in individual areas of the reaction
räumes werden auf diese Weise vermieden.space are avoided in this way.
Die verbesserte Homogenität der Schmelze sowie die verlängerte Verweilzeit ergeben einen deutlieh erhöhten Ausnutzungsgrad der Reagenzien und ermöglichen eine Verringerung der spezifischen Reagenzienzugabe und damic eine deutliche Kostenreduzierung. The improved homogeneity of the melt and the extended residence time result in a significantly increased utilization rate of the reagents and enable a reduction in the specific reagent addition and thus a significant reduction in costs.
Weitere durch die Neuerung erreichte Vorteile bestehen in einer Verringerung des Anteiles an Altschlacken, einer Verringerung der Pfannenabreinigung (beispielsweise durch Sodazugabe), einem höheren Füllungsgrad der Torpedo-Schmelzpfannen und in einer Verringerung der spezifischen Feuerfestkosten bei der Torpedozustellung.Further advantages achieved through the innovation include a reduction in the proportion of old slag, a reduction in ladle cleaning (for example by adding soda), a higher filling level of the torpedo melting ladles and a reduction in the specific refractory costs for the torpedo lining.
Ein Ausführungsbeispiel der Neuerung ist in der Zeichnung schematisch veranschaulicht. Es zeigen 20An example of the innovation is shown schematically in the drawing. It shows 20
Fig. 1 einen Vertikalschnitt durch eine Schmelzpfanne mit der neuerungsgemäßen Lanze,Fig. 1 a vertical section through a melting ladle with the innovative lance,
Fig. 2 eine Aufsicht auf die Anordnung gemäß Fig. 1.Fig. 2 is a plan view of the arrangement according to Fig. 1.
Die Zeichnung zeigt eine Torpedo-Schmelzpfanne 1, in die eine Lanze 2 hineinragt, die etwa vertikal angeordnet ist und an ihrem in der Schmelze 3 befindlichen Ende zwei in entgegengesetzte Richtungen weisende Austrittsdüsen 4, 5 aufweist. DieThe drawing shows a torpedo melting pan 1, into which a lance 2 extends, which is arranged approximately vertically and has two outlet nozzles 4, 5 pointing in opposite directions at its end in the melt 3. The
I I t II t
• I f• I f
I I II I I
Austrittsdüsen 4, 5 sind etwa horizontal angeordnet und gegenüber der Längsachse 6 der Schmelzpfanne 1 um einen Winkel o6 von 30° bis 60°, vorzugsweise von etwa 45°, gedreht.Outlet nozzles 4, 5 are arranged approximately horizontally and rotated relative to the longitudinal axis 6 of the melting ladle 1 by an angle o6 of 30° to 60°, preferably of approximately 45°.
Die durch die Lanze 2 pneumatisch zugeführten pulverförmigen Reagenzien treten in entgegengesetzter Richtung (pfeile 7, 8) aus den Düsen 4, aus und erzeugen in beiden Hälften des langgestreckten Reaktionsraumes eine Strömung, die zu einer raschen und gleichmäßigen Verteilung der Reagenzien über den gesamten Reaktionsraum führt.The powdered reagents supplied pneumatically through the lance 2 exit the nozzles 4 in opposite directions (arrows 7, 8) and generate a flow in both halves of the elongated reaction chamber, which leads to a rapid and uniform distribution of the reagents over the entire reaction chamber.
Claims (3)
15are arranged horizontally.
15
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8633343U DE8633343U1 (en) | 1986-12-12 | 1986-12-12 | Device for introducing powdered reagents into a melting pan |
EP87101652A EP0274557B1 (en) | 1986-12-12 | 1987-02-06 | Installation for the introduction of powdery agents into a melting ladle |
DE8787101652T DE3763585D1 (en) | 1986-12-12 | 1987-02-06 | DEVICE FOR ADDING POWDER-SHAPED REAGENTS INTO A MELTING PAN. |
AT87101652T ATE54334T1 (en) | 1986-12-12 | 1987-02-06 | DEVICE FOR LOADING POWDER REAGENTS INTO A MELTING LADLE. |
ES87101652T ES2016574B3 (en) | 1986-12-12 | 1987-02-06 | DEVICE FOR INTRODUCING SPRAYED REAGENTS IN A CAST IRON PAN. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8633343U DE8633343U1 (en) | 1986-12-12 | 1986-12-12 | Device for introducing powdered reagents into a melting pan |
Publications (1)
Publication Number | Publication Date |
---|---|
DE8633343U1 true DE8633343U1 (en) | 1987-02-12 |
Family
ID=6801099
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8633343U Expired DE8633343U1 (en) | 1986-12-12 | 1986-12-12 | Device for introducing powdered reagents into a melting pan |
DE8787101652T Expired - Fee Related DE3763585D1 (en) | 1986-12-12 | 1987-02-06 | DEVICE FOR ADDING POWDER-SHAPED REAGENTS INTO A MELTING PAN. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787101652T Expired - Fee Related DE3763585D1 (en) | 1986-12-12 | 1987-02-06 | DEVICE FOR ADDING POWDER-SHAPED REAGENTS INTO A MELTING PAN. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0274557B1 (en) |
AT (1) | ATE54334T1 (en) |
DE (2) | DE8633343U1 (en) |
ES (1) | ES2016574B3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4007390A1 (en) * | 1990-03-08 | 1991-09-12 | Krupp Polysius Ag | METHOD AND DEVICE FOR ADDING POWDER-SHAPED REAGENTS INTO A Melting Pan |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2623264A1 (en) * | 1975-06-16 | 1976-12-30 | Jones & Laughlin Steel Corp | LANCE AND METHOD FOR INTRODUCING A MIXTURE OF REACTIVE PARTICULATE MATERIAL AND A CARRIER GAS INTO MELTED IRON TO BE DESULFURIZED |
US4326701A (en) * | 1979-09-29 | 1982-04-27 | Kaiser Steel Corporation | Lance apparatus |
JPS5822339A (en) * | 1981-07-30 | 1983-02-09 | Denka Consult & Eng Co Ltd | Double-pipe multi-hole lance |
-
1986
- 1986-12-12 DE DE8633343U patent/DE8633343U1/en not_active Expired
-
1987
- 1987-02-06 DE DE8787101652T patent/DE3763585D1/en not_active Expired - Fee Related
- 1987-02-06 ES ES87101652T patent/ES2016574B3/en not_active Expired - Lifetime
- 1987-02-06 AT AT87101652T patent/ATE54334T1/en not_active IP Right Cessation
- 1987-02-06 EP EP87101652A patent/EP0274557B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2016574B3 (en) | 1990-11-16 |
ATE54334T1 (en) | 1990-07-15 |
EP0274557B1 (en) | 1990-07-04 |
DE3763585D1 (en) | 1990-08-09 |
EP0274557A1 (en) | 1988-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2440205B2 (en) | Process for reducing the sulfur content of molten iron | |
DE7406101U (en) | DEVICE FOR INTRODUCING AN AGGREGATE INTO A LIQUID METAL MELT | |
DE6918019U (en) | DEVICE FOR CASTING METALS, IN PARTICULAR STEEL, IN CHILLES | |
DE8633343U1 (en) | Device for introducing powdered reagents into a melting pan | |
DE3605536A1 (en) | DEVICE FOR INJECTING GAS INTO A METAL MELT IN A PAN | |
EP0187924A1 (en) | Process and ladle for gas purging molten metals | |
EP0342395B1 (en) | Device for introduction of powdery agents into a melting ladle | |
DE3508620C2 (en) | ||
DE2855903A1 (en) | Lance for injecting gases into molten baths - where gas flows through porous refractory ring bricks into melt, and solids such as coal dust can be fed through axial lance tube | |
DE2617663C2 (en) | Device for introducing solids into a pan for holding liquid metals | |
DE1196683B (en) | Device and method for feeding powdered or grained materials into cast iron baths | |
DD268835C2 (en) | METHOD AND DEVICE FOR DELIVERING DUST-SOFT MATERIALS | |
DE2332186C2 (en) | Device for mixing a liquid metal phase with other phases | |
DE2144962B2 (en) | Process and plant for continuous steel production | |
AT262353B (en) | Process and plant for the production of spheroidal graphite cast iron | |
DE2837324C2 (en) | Device for introducing granular treatment or alloying agents into a molten metal | |
DE2403902A1 (en) | PROCESS FOR MANUFACTURING LOW CARBON CHROME STEELS AND FERROCHROME ALLOYS | |
DE895771C (en) | Process for the simultaneous rapid desulfurization and desulfurization of Thomasstahl | |
DE1901563A1 (en) | Process for refining pig iron to steel | |
DE1583221A1 (en) | Process for treating molten metal in an electric arc furnace | |
AT398632B (en) | METALLURGICAL VESSEL | |
DE7135511U (en) | DEVICE FOR UM- OR. STIRRING METALLIC MELT | |
DE3129398C2 (en) | Injection process for introducing solids into the steel bath of a hearth furnace, in particular for dephosphorization of the steel | |
DD238779A5 (en) | DEVICE FOR DOSING POWDERFUL AND / OR COMBINED GOODS OR GUTGEMIC | |
DE2019595B1 (en) | Device for the introduction of powdery or liquid materials into molten metals or alloys |