EP0211952A1 - Apparatus and process for transferring a predetermined amount of liquid metal from a vessel containing a molten metal bath into a receiving container - Google Patents
Apparatus and process for transferring a predetermined amount of liquid metal from a vessel containing a molten metal bath into a receiving containerInfo
- Publication number
- EP0211952A1 EP0211952A1 EP19860901833 EP86901833A EP0211952A1 EP 0211952 A1 EP0211952 A1 EP 0211952A1 EP 19860901833 EP19860901833 EP 19860901833 EP 86901833 A EP86901833 A EP 86901833A EP 0211952 A1 EP0211952 A1 EP 0211952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge flow
- molten metal
- flow pipe
- outlet opening
- closed
- 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.)
- Ceased
Links
- 239000002184 metal Substances 0.000 title claims abstract description 38
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 9
- 239000011819 refractory material Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 238000010079 rubber tapping Methods 0.000 description 11
- 239000002893 slag Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
Definitions
- the invention relates to an apparatus for transferring a predetermined amount of liquid metal fr ⁇ n a vessel containing a molten metal bath, in particular a furnace vessel, into a receiving container, by means of a discharge flow pipe having a refractory lining.
- the invention further relates to a process using such an apparatus.
- a pipe connection 14 which has a refractory lining is provided in the upper region of the discharge flow pipe 4, in the illustrated embodiment in the region joining the limbs 5 and 6 thereof.
- the connection 14 is connected to a flexible gas line 15 which can be selectively connected to a vacuum means 17 by way of a first valve 16 or communicated by way of a second valve 18 to the free atmosphere.
- the vacuum means includes a vacuum pump 19, a vacuum storage means 20 and a pressure measuring device 30.
- the capacity of the vacuum storage means 20 approximately corresponds to thirty times the capacity of the discharge flow pipe including the conduits as far as the valves 16 and 18.
- a gas cooler 34 Disposed upstream of the vacuum storage means is a gas cooler 34 whose function is to remove dust fr ⁇ i and to cool the gas which is sucked out by the vacuum means, from the discharge flow pipe 4. It includes a chamber 35 with a coolin coil 36. When the hot gas which has been sucked out by the vacuum means passes into the chamber, the gas can expand because of the abrupt substantial increase in the flow cross-section. The gas drops in temperature when that occurs and in heat exchange relationshi with the cooling coil 36. In addition, the reduction in the flow • speed causes the dust which is entrained with the flow of gas to be separated out. As shown in Figure 1, the receiving container 3 is disposed on a weighing means 21 for measuring the amount of metal which is introduced into the receiving container 3.
- the annular groove may be connected by way of the pipe 33 and by a conduit (not shown) to a vacuum source whereby, in the closed position of the closure plate 23, that is to say, when the annular seal 22 is pressed against the annular flange 31, it is possible to • provide a vacuum-tight connection between the annular flange 31 and the annular seal 22 which is fixed on the closure plate 23. If such a vacuum closure arrangement is not used, the arrangement does not always guarantee that the annular seal 22 is pressed vacuum- tightly against the annular flange 31.
- the refractory lining 13 of the discharge flow pipe is not subjected to a thermal shock when it is put into use and in order to ensure that the metal does not freeze on to the discharge flow pipe while it is being conveyed therethrough, the refractory lining is preheated by means of gas, oil or electrical power.
- the valve 16 When the time has come for tapping the vessel 1 or for transferring the liquid metal to the receiving container 3, the valve 16 is opened, with the valves 18 and 27 still being closed, whereby, as the system is gas-tightly closed off and atmospheric pressure acts on the molten metal bath 2 in the vessel 1, the liquid metal is sucked in by virtue of the vacuum through the gas line 15 and, when that occurs, the entire discharge flew pipe is filled as far as the granular refractory material as well as a part of the connection 14 and a part of the connection 26. That suction operation occurs suddenly by virtue of the vacuum storage means 20. In that stage of operation, the vacuum will drop fr ⁇ n about 98% to about 95%.
- the vacuum pump 19 continues to be operated during the transfer operation in order to remove any gases which may be developed and which may accumulate in the system. In that operation, the gases which are sucked away are cooled down and dust is removed therefrom, in the gas cooler 34.
- a curtain of protective gas can be formed around the jet of liquid metal and above the surface of the bath in the receiving vessel 3 by feeding inert gas to the annular conduit 29.
- the amount of liquid metal which is introduced into the receiving container 3 is measured by the weighing means 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Charging Or Discharging (AREA)
- Furnace Details (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3505844 | 1985-02-20 | ||
| DE3505844 | 1985-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0211952A1 true EP0211952A1 (en) | 1987-03-04 |
Family
ID=6263026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19860901833 Ceased EP0211952A1 (en) | 1985-02-20 | 1986-02-13 | Apparatus and process for transferring a predetermined amount of liquid metal from a vessel containing a molten metal bath into a receiving container |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0211952A1 (enrdf_load_stackoverflow) |
| BR (1) | BR8605562A (enrdf_load_stackoverflow) |
| DE (1) | DE8504755U1 (enrdf_load_stackoverflow) |
| HU (1) | HU196497B (enrdf_load_stackoverflow) |
| IN (2) | IN164135B (enrdf_load_stackoverflow) |
| TR (1) | TR23406A (enrdf_load_stackoverflow) |
| WO (1) | WO1986004980A1 (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU611918B2 (en) * | 1987-06-24 | 1991-06-27 | Philip Martin Jones | A syphon tube |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ297606B6 (cs) * | 1999-04-01 | 2007-02-07 | Arcmet Technologie Gmbh | Metalurgická nádoba s odpichovým zarízením |
| GB0304241D0 (en) * | 2003-02-22 | 2003-03-26 | Warner Noel A | Molten metal siphon |
| CN103363809B (zh) * | 2013-07-25 | 2015-07-15 | 深圳市劲拓自动化设备股份有限公司 | 一种液态金属真空抽取装置及抽取方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE113574C (enrdf_load_stackoverflow) * | ||||
| DE605701C (de) * | 1934-11-17 | Armin Wachsmuth | Saugheber zum Entleeren von thermischen Baedern | |
| BE631141A (enrdf_load_stackoverflow) * | 1962-04-19 | |||
| FR1492043A (fr) * | 1966-02-18 | 1967-08-18 | Purmetall Werner Funke Fa | Séparateur de scories pour une installation de dégazage par le vide |
| SE384805B (sv) * | 1971-06-03 | 1976-05-24 | I Properzi | Forfarande och anordning for avgasning och overforing av smelt metall |
| FR2555719B1 (fr) * | 1983-11-24 | 1988-05-13 | Clecim Sa | Dispositif de fermeture d'un trou de coulee |
-
1985
- 1985-02-20 DE DE19858504755 patent/DE8504755U1/de not_active Expired
- 1985-10-15 IN IN733/CAL/85A patent/IN164135B/en unknown
-
1986
- 1986-02-07 TR TR7686A patent/TR23406A/xx unknown
- 1986-02-13 EP EP19860901833 patent/EP0211952A1/en not_active Ceased
- 1986-02-13 WO PCT/EP1986/000069 patent/WO1986004980A1/en not_active Application Discontinuation
- 1986-02-13 HU HU863047A patent/HU196497B/hu not_active IP Right Cessation
- 1986-02-13 BR BR8605562A patent/BR8605562A/pt unknown
- 1986-02-17 IN IN112/CAL/86A patent/IN164059B/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8604980A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU611918B2 (en) * | 1987-06-24 | 1991-06-27 | Philip Martin Jones | A syphon tube |
Also Published As
| Publication number | Publication date |
|---|---|
| IN164135B (enrdf_load_stackoverflow) | 1989-01-21 |
| BR8605562A (pt) | 1987-04-22 |
| TR23406A (tr) | 1989-12-29 |
| WO1986004980A1 (en) | 1986-08-28 |
| HU196497B (en) | 1988-11-28 |
| IN164059B (enrdf_load_stackoverflow) | 1989-01-07 |
| DE8504755U1 (de) | 1986-08-28 |
| HUT42844A (en) | 1987-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19860930 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| 17Q | First examination report despatched |
Effective date: 19880525 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 19891123 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WEBER, RALPH |