EP0376142B1 - Einblasvorrichtung - Google Patents
Einblasvorrichtung Download PDFInfo
- Publication number
- EP0376142B1 EP0376142B1 EP89123547A EP89123547A EP0376142B1 EP 0376142 B1 EP0376142 B1 EP 0376142B1 EP 89123547 A EP89123547 A EP 89123547A EP 89123547 A EP89123547 A EP 89123547A EP 0376142 B1 EP0376142 B1 EP 0376142B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- refractory material
- injection device
- brick
- metal
- 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.)
- Revoked
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
- C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
- B22D1/005—Injection assemblies therefor
Definitions
- the present invention relates to a blowing device metallurgical vessel which has increased durability.
- Blowing devices are used in various fields of industry. E.g. they are used in metallurgical vessels and metal melts to introduce gases or finely divided solids into a liquid. In many cases, these are gas flushing blocks made of refractory material, which are equipped with channels through which the gases or finely divided solids flow into the liquid. Gas purging plugs are for example from DE-OS 36 25 478, DE-OS 36 42 623, DE-OS 36 31 521, DE-U 85 22 350, 86 20 206 and 87 16 110 and EP-A-0 153 380 known.
- Such gas purging stones are usually provided with a metal jacket and, as a rule provided with a separate sleeve, are inserted into perforated stones.
- the top surface of the sink stones is subject to high wear and tear, so that the stones are continuously broken down from the surface.
- the turbulence of the melt causes severe wear between the metal layer, the sleeve, the perforated brick and the adjacent vessel bottom. As a result, the durability of these systems is very limited.
- the upper truncated cone end of the gas purging plug which is not encased by the perforated brick, projects into the interior of the metallurgical vessel beyond the bottom of the vessel and that the perforated brick and the gas purging plug sitting in it are provided with an outer covering made of cast or stamped refractory material .
- the refractory material preferably also fills the gap between the bottom of the vessel and the perforated brick.
- Preferred embodiments of the invention are defined in claims 2-6.
- a method for manufacturing the blowing device is defined in claim 7.
- the frustoconical gas purging plug preferably consists of two chambers which are separated from one another by a gas-tight layer. Metal is expediently used for this purpose. In this case, a zone is provided in the area of the outer surface of the circular truncated cone in which no gas is conducted.
- the non-gas-carrying chamber encloses a gas-carrying chamber in which there are continuous channels which extend from the circular truncated cone base surface to the cover surface.
- the gas permeability can also be achieved by other means, for example by non-directional porosity, directional gas permeability, the introduction of slots or channels arranged in some other way.
- channels or elevations can be present on the lateral surface of the sink block, as are known from the so-called edge sink blocks.
- Channels in stones made of refractory materials can be made using various methods.
- E.g. granular refractory material can be introduced into a mold with needles or cores and compacted by pounding, shaking, vibrating or pressing.
- Methods for producing pores or channels in refractory materials are e.g. known from DE-OS 25 11 997, EP-PS 0 083 919, AT-PS 288 860 or AT-PS 248 936.
- the metal-coated gas purging plug is inserted into a perforated brick so that its upper end of the circular truncated cone protrudes out of the perforated brick into the interior of the vessel. It is preferably shaped in such a way that only the gas-carrying inner chamber protrudes and is not enveloped by the perforated brick.
- the non-gas-carrying outer chamber then preferably has the same height as the perforated brick.
- Perforated brick and exposed end of the frustoconical gas purging plug are provided according to the invention with an additional outer covering made of refractory material.
- This covering is produced in such a way that the gap between the bottom of the vessel and the perforated brick is first poured out with refractory material and this layer is then compressed.
- the compaction can be achieved, for example, by ramming, pouring or vibrating. Self-compacting material can also be used.
- the end of the frustoconical gas purging plug protruding above the perforated brick is coated with the refractory material.
- the metal layer which encompasses the free-standing end of the frustoconical gas purging plug, is preferably provided with fastening elements, so that the outer covering made of refractory material adheres particularly firmly.
- Suitable fastening elements include slot pins, shaft anchors, V-anchors and welding beads.
- other fastening elements are also suitable. E.g. elevations can also be provided in the metal jacket.
- blowing surface is protected against turbulence of the melt to such an extent that the wear is considerably reduced by a blowing device constructed in this way.
- blowing devices customary according to the prior art there is severe wear between the metal layer, sleeve, perforated stone and adjacent vessel bottom stones, which is caused by strong turbulence in the melt.
- these disadvantages are avoided, so that the durability is at least 5 times that of the devices customary hitherto and thus lasts up to an entire vascular journey.
- the common metal coating of both chambers of the gas purging plug also ensures reliable replacement of the gas purging plugs without damaging the perforated plug.
- a frustoconical gas purging plug 1 is inserted into a perforated block 8.
- the frustoconical gas purging plug 1 consists of two chambers.
- the chamber 13 is gas-carrying, while the outer chamber 14 is non-gas-carrying.
- the gases are passed from the base surface 5 to the top surface 15 of the truncated cone through the channels 2 in the chamber 13.
- In its upper truncated cone end 9 comprises frustoconical gas purging plug 1 only the gas-carrying chamber 13.
- This chamber section is surrounded by a metal jacket 6, but is no longer surrounded by the perforated brick 8 and protrudes over the bottom of the vessel into the interior of the metallurgical vessel.
- the circular frustoconical gas purging plug 1 is provided with a metal jacket 6 on its entire lateral surface and its base surface 5.
- the metal jacket 6, which separates the chambers 13, 14, is also arranged between the gas-conducting chamber 13 and the non-gas-conducting chamber 14, which concentrically surrounds this and forms an intermediate layer between the perforated brick 8 and the gas-conducting chamber 13.
- the top surface 15 is not coated.
- a gas supply pipe 7 is attached centrally to the base 5 of the gas purging plug. Gas is fed via this tube to the gas purging plug 1, through which it flows through the channels 2.
- gas purging stone 1 and perforated stone 8 are completely coated with a covering 11 made of refractory material.
- the refractory material has been introduced into the gap 12 between perforated stone 8 and vessel bottom inlay 10 and has been filled up to the top surface 15 of the stone.
- the metal jacket is equipped with fastening elements 16 which serve to anchor the outer sheath 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Charging Or Discharging (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Polarising Elements (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Gas Separation By Absorption (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89123547T ATE97168T1 (de) | 1988-12-22 | 1989-12-20 | Einblasvorrichtung. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3843149 | 1988-12-22 | ||
DE3843149 | 1988-12-22 | ||
DE3907383A DE3907383A1 (de) | 1988-12-22 | 1989-03-08 | Einblasvorrichtung |
DE3907383 | 1989-03-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0376142A1 EP0376142A1 (de) | 1990-07-04 |
EP0376142B1 true EP0376142B1 (de) | 1993-11-10 |
Family
ID=25875447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89123547A Revoked EP0376142B1 (de) | 1988-12-22 | 1989-12-20 | Einblasvorrichtung |
Country Status (11)
Country | Link |
---|---|
US (1) | US4991825A (es) |
EP (1) | EP0376142B1 (es) |
JP (2) | JPH02263565A (es) |
KR (1) | KR900009143A (es) |
AT (1) | ATE97168T1 (es) |
AU (1) | AU628899B2 (es) |
CA (1) | CA2006112A1 (es) |
DE (2) | DE3907383A1 (es) |
ES (1) | ES2048268T3 (es) |
MX (1) | MX172108B (es) |
NZ (1) | NZ231955A (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4024698A1 (de) * | 1989-10-04 | 1991-04-18 | Cookson Plibrico Gmbh | Einblasvorrichtung |
DE4105513A1 (de) * | 1991-02-22 | 1992-08-27 | Didier Werke Ag | Feuerfestes gasspuelelement fuer metallurgische schmelzen |
DE4126237A1 (de) * | 1991-08-08 | 1993-03-04 | Radex Heraklith | Vorgefertigtes einbauelement fuer elektro-lichtbogenoefen und zugehoeriger elektro-lichtbogenofen |
TW206260B (es) * | 1991-09-25 | 1993-05-21 | Air Prod & Chem | |
US5249778A (en) * | 1992-04-14 | 1993-10-05 | Dolomitwerke Gmbh | Gas stir plug device with visual wear indicator |
CH699948A2 (de) * | 2008-11-17 | 2010-05-31 | Stopinc Ag | Behälter für Metallschmelze sowie ein Verfahren zur auswechselbaren Befestigung eines feuerfesten Spülsteins oder einer feuerfesten Hülse. |
RU173109U1 (ru) * | 2016-08-09 | 2017-08-11 | Закрытое акционерное общество "Ферро Балт Плюс" | Устройство для продувки металла газами в ковше |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL74999C (es) * | 1952-01-21 | |||
US3610602A (en) * | 1969-10-14 | 1971-10-05 | United States Steel Corp | Gas-permeable refractory plug and method |
JPS4922484U (es) * | 1972-05-31 | 1974-02-26 | ||
SE392479B (sv) * | 1974-03-20 | 1977-03-28 | Asea Ab | Forma vid metallurgiska konvertrar och smeltugnar |
JPS6032355B2 (ja) * | 1978-11-22 | 1985-07-27 | 三菱電機株式会社 | 半導体装置の製造方法 |
GB2102926B (en) * | 1981-06-03 | 1985-05-15 | Nippon Kokan Kk | Gas blowing nozzle, and production and usage thereof |
AU541441B2 (en) * | 1981-07-15 | 1985-01-10 | Nippon Steel Corporation | Bottom blowing nozzle embedded in a refractory block |
DE3247716A1 (de) * | 1982-12-23 | 1984-07-12 | Didier-Werke Ag, 6200 Wiesbaden | Vorrichtung zum einfuehren von gasen in metallurgische gefaesse |
GB8323252D0 (en) * | 1983-08-30 | 1983-09-28 | Steer C A | Wheelbarrow |
DE3625478A1 (de) * | 1985-08-02 | 1987-02-12 | Burbach & Bender Ohg | Gasspuelstein fuer metallurgische gefaesse |
DE8522350U1 (de) * | 1985-08-02 | 1987-02-26 | Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen | Gasspülstein für metallurgische Gefäße |
US4725047A (en) * | 1985-08-26 | 1988-02-16 | Labate M D | Device for introducing gas into molten metal |
DE8620206U1 (de) * | 1986-07-28 | 1987-08-27 | Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen | Vorrichtung zur Herstellung eines Formsteins für eine Gasspüleinrichtung |
DE3631521A1 (de) * | 1986-09-17 | 1988-04-07 | Burbach & Bender Ohg | Gasspuelvorrichtung |
DE8716110U1 (de) * | 1986-12-05 | 1988-02-04 | Nöh, Friedhelm, 5900 Siegen | Gasspülstein |
DE3642623A1 (de) * | 1986-12-13 | 1988-06-23 | Burbach & Bender Ohg | Gasspuelstein fuer metallurgische gefaesse |
-
1989
- 1989-03-08 DE DE3907383A patent/DE3907383A1/de active Granted
- 1989-12-19 AU AU46958/89A patent/AU628899B2/en not_active Ceased
- 1989-12-20 AT AT89123547T patent/ATE97168T1/de not_active IP Right Cessation
- 1989-12-20 US US07/453,661 patent/US4991825A/en not_active Expired - Fee Related
- 1989-12-20 EP EP89123547A patent/EP0376142B1/de not_active Revoked
- 1989-12-20 DE DE89123547T patent/DE58906171D1/de not_active Revoked
- 1989-12-20 ES ES89123547T patent/ES2048268T3/es not_active Expired - Lifetime
- 1989-12-20 CA CA002006112A patent/CA2006112A1/en not_active Abandoned
- 1989-12-21 KR KR1019890019162A patent/KR900009143A/ko not_active Application Discontinuation
- 1989-12-21 NZ NZ231955A patent/NZ231955A/en unknown
- 1989-12-22 JP JP1331404A patent/JPH02263565A/ja active Pending
- 1989-12-22 MX MX018882A patent/MX172108B/es unknown
-
1995
- 1995-08-16 JP JP1995008557U patent/JP2535879Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4991825A (en) | 1991-02-12 |
ATE97168T1 (de) | 1993-11-15 |
NZ231955A (en) | 1992-07-28 |
JPH08454U (ja) | 1996-03-08 |
DE3907383C2 (es) | 1990-12-20 |
JP2535879Y2 (ja) | 1997-05-14 |
KR900009143A (ko) | 1990-07-02 |
ES2048268T3 (es) | 1994-03-16 |
MX172108B (es) | 1993-12-03 |
EP0376142A1 (de) | 1990-07-04 |
DE3907383A1 (de) | 1990-09-20 |
AU4695889A (en) | 1990-06-28 |
DE58906171D1 (de) | 1993-12-16 |
JPH02263565A (ja) | 1990-10-26 |
CA2006112A1 (en) | 1990-06-22 |
AU628899B2 (en) | 1992-09-24 |
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