EP2324133A1 - Einlaufrüssel für ein nach dem rh-verfahren arbeitendes entgasungsgefäss für metallurgische schmelzen - Google Patents
Einlaufrüssel für ein nach dem rh-verfahren arbeitendes entgasungsgefäss für metallurgische schmelzenInfo
- Publication number
- EP2324133A1 EP2324133A1 EP09776057A EP09776057A EP2324133A1 EP 2324133 A1 EP2324133 A1 EP 2324133A1 EP 09776057 A EP09776057 A EP 09776057A EP 09776057 A EP09776057 A EP 09776057A EP 2324133 A1 EP2324133 A1 EP 2324133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inlet
- trunk
- inlet nozzle
- tube
- degassing vessel
- 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
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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
Definitions
- the invention relates to an inlet trunk for a working according to the RH process degassing vessel for metallurgical melts.
- the liquid steel from a ladle in a riser by means of a conveying gas, in particular argon, which is introduced above the Stahlbadspiegel in the riser, by its increase in volume in the riser and further by the pressure difference between the outer Air pressure and the negative pressure in the evacuation vessel in this transported.
- a conveying gas in particular argon
- the argon bubbles are germs for CO formation, promote deoxidation and the deposition of non-metallic particles.
- the steel sucked into the evacuation vessel is sprayed, whereby an increase in surface area and thus a good degassing occurs.
- the object of the invention is to improve the flow conditions within the inlet spout.
- Method working degassing vessel for metallurgical melts which is characterized in that distributed over the axial length of the inlet spout tube scavenger are introduced through the inert gas into the inlet trunk and that upstream of this tube scavenger groove-like trained guide shapes are provided which in the clear cross-section of Protruding inlet spout.
- the essence of the invention thus consists in the realization of a passive flow guidance in the inlet trunk of the RH plant.
- the passive flow control differs from the active flow control (eg blowing in gas) in that the primary fluid is influenced exclusively by shaping measures.
- This goal is achieved by a special shape of the refractory lining in the axial direction of the inlet trunk.
- the lining takes place from the inlet side - ie from bottom to top - through a plurality of groove-like guide shapes twisted by a certain angle and projecting into the melt.
- These conductive forms extend into the inlet trunk and induce a swirl in the ascending multiphase mixture of melt and gas bubbles.
- the gas bubbles are transported away from the refractory wall in the direction of the axis of the intake spout.
- There is a homogenization of the characteristic flow profile instead. This process is associated with a more intensive mixing in the inlet trunk.
- twisted refractory lead forms are installed between the inert gas addition sites (tube scavenger).
- the number of guide shapes depends on the number of tube scavengers.
- the guide shapes with the thickness D, the depth T and the radius R are rotated from bottom to top, ie in the direction of the trunk longitudinal axis, by an angle ⁇ .
- orders of magnitude for this angle are between 20 ° and 45 °.
- the advantage of the invention is therefore that the treatment or circulation time in the RH plant can be reduced due to the better homogenization of the multi-phase mixture of melt and gas bubbles. Higher amounts of gas could be used, which can improve the kinetics of metallurgy. As a result, the productivity of the RH plant is increased.
- Fig. 1 in perspective a provided with conductive shapes section of an intake trunk and
- the guide shapes are twisted with a thickness D, a depth T and a radius R in the longitudinal direction of the trunk, namely by an angle ⁇ .
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008037166A DE102008037166A1 (de) | 2008-08-07 | 2008-08-07 | Einlaufrüssel für ein nach dem RH-Verfahren arbeitendes Entgasungsgefäß für metallurgische Schmelzen |
| PCT/DE2009/001096 WO2010015242A1 (de) | 2008-08-07 | 2009-08-03 | Einlaufrüssel für ein nach dem rh-verfahren arbeitendes entgasungsgefäss für metallurgische schmelzen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2324133A1 true EP2324133A1 (de) | 2011-05-25 |
| EP2324133B1 EP2324133B1 (de) | 2012-06-13 |
Family
ID=41137760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09776057A Active EP2324133B1 (de) | 2008-08-07 | 2009-08-03 | Einlaufrüssel für ein nach dem rh-verfahren arbeitendes entgasungsgefäss für metallurgische schmelzen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20110179909A1 (de) |
| EP (1) | EP2324133B1 (de) |
| AU (1) | AU2009279227B2 (de) |
| BR (1) | BRPI0918898B1 (de) |
| DE (1) | DE102008037166A1 (de) |
| ES (1) | ES2385780T3 (de) |
| RU (1) | RU2468092C2 (de) |
| WO (1) | WO2010015242A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101696327B1 (ko) * | 2014-12-12 | 2017-01-13 | 주식회사 포스코 | 진공처리장치 |
| CN113456842B (zh) * | 2021-07-06 | 2022-11-18 | 云南乍甸乳业有限责任公司 | 一种蒸汽喷射式发酵培养基加热灭菌器 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321300A (en) * | 1963-08-13 | 1967-05-23 | Conzinc Riotinto Ltd | Degassing of metals or alloys |
| SU1096285A1 (ru) * | 1983-01-17 | 1984-06-07 | Московский Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Институт Стали И Сплавов | Устройство дл циркул ционного вакуумировани стали |
| JPS62270733A (ja) * | 1986-05-16 | 1987-11-25 | Hitachi Cable Ltd | 吸上げ式真空脱ガス装置 |
| BR8803185A (pt) | 1987-06-29 | 1989-01-24 | Kawasaki Steel Co | Processo e aparelho para desgaseificacao de metal em fusao |
| US5024421A (en) * | 1990-05-08 | 1991-06-18 | Usx Corporation | Interlocking snorkel refractory |
| JPH04304308A (ja) * | 1991-03-29 | 1992-10-27 | Sumitomo Metal Ind Ltd | 溶融金属の脱ガス促進方法 |
| US5603749A (en) * | 1995-03-07 | 1997-02-18 | Bethlehem Steel Corporation | Apparatus and method for vacuum treating molten steel |
| RU2092579C1 (ru) * | 1995-07-05 | 1997-10-10 | Акционерное общество "Новолипецкий металлургический комбинат" | Способ циркуляционного вакуумирования металла в ковше |
| RU2172784C1 (ru) * | 2000-01-10 | 2001-08-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Способ внепечной обработки стали |
-
2008
- 2008-08-07 DE DE102008037166A patent/DE102008037166A1/de not_active Withdrawn
-
2009
- 2009-08-03 EP EP09776057A patent/EP2324133B1/de active Active
- 2009-08-03 RU RU2011108576/02A patent/RU2468092C2/ru active
- 2009-08-03 WO PCT/DE2009/001096 patent/WO2010015242A1/de not_active Ceased
- 2009-08-03 US US13/057,614 patent/US20110179909A1/en not_active Abandoned
- 2009-08-03 ES ES09776057T patent/ES2385780T3/es active Active
- 2009-08-03 BR BRPI0918898-3A patent/BRPI0918898B1/pt active IP Right Grant
- 2009-08-03 AU AU2009279227A patent/AU2009279227B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010015242A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110179909A1 (en) | 2011-07-28 |
| BRPI0918898B1 (pt) | 2017-10-31 |
| ES2385780T3 (es) | 2012-07-31 |
| RU2468092C2 (ru) | 2012-11-27 |
| EP2324133B1 (de) | 2012-06-13 |
| WO2010015242A1 (de) | 2010-02-11 |
| DE102008037166A1 (de) | 2010-02-11 |
| AU2009279227B2 (en) | 2013-07-04 |
| BRPI0918898A2 (pt) | 2015-12-01 |
| RU2011108576A (ru) | 2012-09-20 |
| AU2009279227A1 (en) | 2010-02-11 |
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