GB2266361A - Metallurgical vessel wellblock - Google Patents
Metallurgical vessel wellblock Download PDFInfo
- Publication number
- GB2266361A GB2266361A GB9307135A GB9307135A GB2266361A GB 2266361 A GB2266361 A GB 2266361A GB 9307135 A GB9307135 A GB 9307135A GB 9307135 A GB9307135 A GB 9307135A GB 2266361 A GB2266361 A GB 2266361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- well block
- gas purging
- opening
- purging plug
- well
- 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.)
- Granted
Links
- 238000010926 purge Methods 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 39
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 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
- C21C5/48—Bottoms or tuyéres of converters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Charging Or Discharging (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Glass Melting And Manufacturing (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Percussion Or Vibration Massage (AREA)
- Extraction Or Liquid Replacement (AREA)
- Harvester Elements (AREA)
Description
2266361 A WELL BLOCK The invention relates to a well block with a through
opening for receiving a well block sleeve and/or gas purging plug, such as used in metallurgic melting vessels.
In Radex-Rundschau, Issue 4, 1986, 203 various structural shapes of gas purging plug are represented, with which gases, in particular inert gases, partly combined with powdered added substances, are injected into the molten mass of metallurgic vessels.
Usually such gas purging elements are positioned in so-called well blocks, possibly with intermediate insertion of a so-called well block sleeve.
Well blocks of the known type have a central passage hole (opening), the central longitudinal axis of which is aligned vertically if the well block nozzle is fitted in the base of a metallurgic melting vessel. With positioning in the wall of a metallurgic melting vessel the alignment of the central longitudinal axis of the opening is correspondingly horizontal.
The well block opening mostly has the shape of a truncated cone because the gas purging plug (or the well nozzle sleeve) usually has the form of a truncated cone, although other structural shapes are known.
The invention described in detail in the following relates to a well nozzle for accommodating gas purging plugs (or corresponding well block sleeves) of any form.
The known well blocks have in principle proved to be successful. Nevertheless, there is a constant requirement to optimise such well blocks further, in order to improve the secondary metallurgic processes for the purpose of a homogenisation of the molten mass and a removal of the non-metallic inclusions.
For this purpose the invention proposes a well block with a through opening for receiving a well nozzle sleeve and/or a gas purging plug for use in metallurgic melting vessels, in which the central longitudinal axis of the opening extends at an angle directed outwards of <450 to the vertical central longitudinal axis of the well block.
As the above-ment oned state of the art shows the alignment of the well block and associated gas purging plug used hitherto was such that the central longitudinal axes of both components were aligned vertically after:Incorporation into the base of a metallurgic melting vessel. The vertical alignment is therefore also regarded as being indispensable, because the gas purging plug, once it is worn, has to be pulled downwards out of the outer lining or the well block or the well block sleeve, for which corresponding extracting devices are known, such as are described in more detail in EP 0 137 961 Bl.
It has now become apparent that the exact vertical alignment of the gas purging plug or the associated well block when assembling in the base of the metallurg c melting vessel cannot always be guaranteed completely reliably. Thus for example when cementing the gas purging plug in the well block with mortar the result is often a very slight axial displacement of the gas purging plug with the result that the emerging gas stream does not extend exactly vertical, but rather at an angle to the vertical line. This then has the result that for example in the region of the slag zone above the base installed gas purging plug the result is an undesired fast wearing of the fire-resistant wall lining, in particular if the gas purging plug is used for several loads.
Here the design according to the invention of the well block provides the remedy, because it is possible with the targeted inclined position of the well block opening, to fit the gas purging plug so that the gas outlet direction (for example the lengthening of the gas supply channels in gas purging plugs with directed porosity) is aligned in the centre of the metallurg c melting vessel, for example the centre of the ladle.
This is of particular importance because the gas purging plugs are not usually fitted in the centre of the metallurgic melting vessel in the base, but of f -centre and thereby partially positioned relatively tightly on the side wall of the melting vessel.
Here targeted measures a re created in that the well block is f ormed with a prepared inclined opening so that the gas purging plug is fitted directly in the base of a metallurgic melting vessel so that there is a lengthening of the central longitudinal axis of the inclined opening away f rom the side walls of the metallurgic melting vessel into the centre thereof.
The angle of inclination should, according to the invention, be <450, wherein an angle of inclination of between 1 and 10', relative to the vertical central longitudinal axis of the well block is usually is sufficient.
Pref erably the shape of the opening of the well block is adapted to the outer shape of the well block sleeve or of the gas purging plug. The opening can therefore be slightly greater than the outer shape of the well block sleeve or the gas purging plug, so that through intermediate insertion of a mortar layer the well block sleeve or the gas purging plug can easily be fixed.
In particular with small angles of inclination surprisingly no problems arise with subsequent extraction of the gas purging plug of f the well block even if a conventional extracting device is used. On the contrary: the slightly eccentric attack of the extracting device with a corresponding traction force even results in the gas purging plug being able to be removed more easily from the well block sleeve or the well block.
With the exception of the feature of the alignment of its opening the well block corresponds otherwise to the conventional structural shapes. This has the advantage that the well block according to the invention can be easily added to existing vessels. Because the well block is otherwise arranged, as was hitherto the case, in the base of the metallurgic melting vessel, it is moreover possible to extract it with a well block drawing device which is also known, provided that this is desired after corresponding wear.
Although the well block can be used for accommodating any type of gas purging plug, the above described advantages are obtained in a special manner with gas purging plugs with directed porosity, with so called segmentally shaped gas plugs or so-called joint plugs, since these enable a defined out-flowing direction of the gases supplied.
Further features of the invention are found in the features of the subclaims as well as the other documents of the application.
The invention will be illustrated in more detail in the following with the aid of an exemplary embodiment.
The single Figure here shows - in a very diagrammatic representation - a well block according to the invention with an inserted gas purging plug..
The reference number 10 denotes the well block itself which has a central opening 12.
The vertical central longitudinal axis of the well block 10 is denoted by the letter "V". The central longitudinal axis of the opening 12 has the distinguishing mark "m".
The result from this is that in the present exemplary embodiment the central longitudinal axis M extends at an angle of 6' to the vertical central longitudinal axis of the well block 10 (directed outwards), as a result of which in all an inclined position directed outwards of the gas purging plug cemented with mortar in the central opening 12 is produced.
The Figure shows furthermore that the opening 12 as well as the gas purging plug 14 has a truncated cone form known per se. Because of the inclined position of the opening 12 the upper and the lower end of the gas purging plug 14 do not extend so as to be flush with the upper or lower end of the well block 10, but at a corresponding angle, which however does not damage the device as a whole.
The gas purging plug 14 is usually shaped, a gas connection tube 16 being represented here - again only schematically.
The embodiment represented in the Figure can be realised then in the same way, if between the well block and the gas purging plug 14 there is still arranged a well block sleeve (not represented), wherein the well block sleeve as well as the gas purging plug 14 then have the shown inclined position and the well block sleeve and the gas purging plug can in turn have a conventional structural shape.
6
Claims (5)
1. A well block with a through opening for receiving a well block sleeve and/or a gas purging plug for use in metallurgic melting vessels, in which the central longitudinal axis of the opening extends at an angle of < 450 directed outwards to the vertical central longitudinal axis of the well block.
2. A well block according to claim 1, in which the central longitudinal axis of the opening extends at an angle of between 1 and 10' directed outwards to the vertical central longitudinal axis of the well block.
3. A well block according to claim 1 or 2, in which the shape of the opening is adapted to the outer shape of the well block sleeve or of the gas purging plug.
4. A well block according to one of claims 1 to 3, in which the opening is slightly larger than the outer shape of the well block sleeve or the gas purging plug.
5. A well block substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4211598A DE4211598C1 (en) | 1992-04-07 | 1992-04-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9307135D0 GB9307135D0 (en) | 1993-05-26 |
| GB2266361A true GB2266361A (en) | 1993-10-27 |
| GB2266361B GB2266361B (en) | 1996-01-31 |
Family
ID=6456259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9307135A Expired - Fee Related GB2266361B (en) | 1992-04-07 | 1993-04-06 | A well block |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT405255B (en) |
| DE (1) | DE4211598C1 (en) |
| ES (1) | ES2065264B1 (en) |
| FR (1) | FR2689553B1 (en) |
| GB (1) | GB2266361B (en) |
| IT (1) | IT1264012B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1296919A (en) * | 1969-12-27 | 1972-11-22 | ||
| GB1364792A (en) * | 1971-01-18 | 1974-08-29 | Centre Rech Metallurgique | Steel making converters |
| GB1546608A (en) * | 1975-05-17 | 1979-05-23 | Didier Werke Ag | Refractory brick lined tuyere bottoms |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2268279A (en) * | 1939-09-12 | 1941-12-30 | William S Debenham | Refractory nozzle |
| US2944310A (en) * | 1958-02-13 | 1960-07-12 | Tarmann Bruno | Method of continuous casting |
| GB1180280A (en) * | 1967-03-15 | 1970-02-04 | Ural Zd Tyazhelogo Mash | Method and Apparatus for Pouring Molten Metal into an Open-Ended Tubular Curved Mould of a Continuous Casting Plant |
| CA1206752A (en) * | 1982-06-18 | 1986-07-02 | Jean Goedert | Method and device for draining metallurgical vessels |
| US4502670A (en) * | 1984-02-02 | 1985-03-05 | Allied Corporation | Gas hook-up to a ladle |
| DE3410947A1 (en) * | 1984-03-24 | 1985-10-03 | Mannesmann AG, 4000 Düsseldorf | Metallurgical treatment vessel, in particular a steel plant converter |
| DE3619533C1 (en) * | 1986-06-10 | 1987-09-03 | Kloeckner Stahl Gmbh | Nozzle brick (perforated brick) with a blowing-in brick for metallurgical vessels, in particular steel ladles, for blowing gases or solid/gas mixtures into the metallic melts contained in the metallurgical vessels |
| US5050847A (en) * | 1986-07-15 | 1991-09-24 | Flo-Con Systems, Inc. | Staged valve multi-hole injection block and method |
| DE4012952C2 (en) * | 1990-04-24 | 1995-03-23 | Didier Werke Ag | Gas purging device on a metallurgical vessel |
| DE4033482C1 (en) * | 1990-10-20 | 1992-02-20 | Kloeckner Stahl Gmbh, 4100 Duisburg, De | |
| DE4207881C1 (en) * | 1992-03-12 | 1993-08-26 | Veitscher Magnesitwerke-Actien-Gesellschaft, Wien, At | Gas flushing brick for melting vessels - has gas channels slightly inclined to vertical to ensure that gas flow is towards centre of vessel despite non-vertical fitting of brick inside vessel bottom |
-
1992
- 1992-04-07 DE DE4211598A patent/DE4211598C1/de not_active Expired - Fee Related
-
1993
- 1993-03-24 AT AT0058493A patent/AT405255B/en not_active IP Right Cessation
- 1993-03-31 ES ES09300653A patent/ES2065264B1/en not_active Expired - Fee Related
- 1993-04-06 FR FR9304036A patent/FR2689553B1/en not_active Expired - Fee Related
- 1993-04-06 GB GB9307135A patent/GB2266361B/en not_active Expired - Fee Related
- 1993-04-06 IT ITMI930687A patent/IT1264012B/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1296919A (en) * | 1969-12-27 | 1972-11-22 | ||
| GB1364792A (en) * | 1971-01-18 | 1974-08-29 | Centre Rech Metallurgique | Steel making converters |
| GB1546608A (en) * | 1975-05-17 | 1979-05-23 | Didier Werke Ag | Refractory brick lined tuyere bottoms |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2266361B (en) | 1996-01-31 |
| AT405255B (en) | 1999-06-25 |
| ATA58493A (en) | 1998-11-15 |
| IT1264012B (en) | 1996-09-06 |
| ES2065264B1 (en) | 1995-11-16 |
| DE4211598C1 (en) | 1993-01-14 |
| ITMI930687A1 (en) | 1994-10-06 |
| FR2689553A1 (en) | 1993-10-08 |
| GB9307135D0 (en) | 1993-05-26 |
| ES2065264A1 (en) | 1995-02-01 |
| FR2689553B1 (en) | 1995-11-10 |
| ITMI930687A0 (en) | 1993-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970406 |