EP1920074A1 - Induction powered ladle bottom nozzle - Google Patents
Induction powered ladle bottom nozzleInfo
- Publication number
- EP1920074A1 EP1920074A1 EP06801873A EP06801873A EP1920074A1 EP 1920074 A1 EP1920074 A1 EP 1920074A1 EP 06801873 A EP06801873 A EP 06801873A EP 06801873 A EP06801873 A EP 06801873A EP 1920074 A1 EP1920074 A1 EP 1920074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- ladle
- metal
- outlet
- container
- 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.)
- Withdrawn
Links
- 230000006698 induction Effects 0.000 title claims description 11
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 239000010439 graphite Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/60—Pouring-nozzles with heating or cooling means
-
- 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
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1518—Tapholes
-
- 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
- C21C5/4653—Tapholes; Opening or plugging thereof
Definitions
- This application relates to an inductively powered nozzle for controlling the flow of metal from a ladle or other vessel containing molten metal.
- a ladle or other container for molten metal is provided with an outlet nozzle that is easily controlled and less expensive.
- a stream of molten metal e.g., silicon flows through a tubular refractory nozzle by heating the nozzle to the melting temperature of the metal.
- the nozzle is, for example, tubular and made OfAl 2 O 3 or SiO 2 and is surrounded by a graphite tube in thermal contact with the nozzle. The nozzle is heated by heating the surrounding graphite tube inductively. Once the temperature of the nozzle exceeds the liquidus temperature of the metal in the ladle, the metal will flow out of the ladle through the nozzle.
- the nozzle may be made entirely of graphite, if the impurities that contact with the graphite may impart to the metal are not of concern.
- the rate of flow through the nozzle may be controlled in part also by applying a vacuum to the ladle proper, as is known in the industry. If the vacuum is sufficient, the flow can be controlled very accurately, from a few drops per minute to full flow through the nozzle. It can also be stopped completely, if there is such a need, and re-started later in the process. Thus, accurate control of flow through the nozzle may also be obtained by combining the nozzle of the invention with known techniques.
- the figure is a vertical cross section of a ladle having a nozzle in accordance with the invention.
- a ladle 2 which is preferably made of inductively transparent material, as known in the art, includes an outlet 4.
- the ladle is used to refine metal 5, such as Si that is to be dispensed through the outlet in the molten state and may include a refractory material 3.
- the metal to be refined may be heated by any known means, such as by inductive heating.
- the outlet comprises a nozzle 6 made of a material that has a melting point higher than that of the material to be dispensed, which is preferably surrounded by insulating refractory material 7.
- the metal to be dispensed is Si 5
- the nozzle may be made of Al 2 O 3 , SiO 2; ZrO 2 or other suitable refractory.
- the nozzle 6 is engaged with the outlet of the ladle and may be supported by contact with a graphite susceptor tube 8 or by other means.
- the susceptor tube 8 preferably surrounds the nozzle and is configured to transfer heat to the nozzle 6 to liquefy the metal to be dispensed.
- the heater tube and nozzle are preferably not in physical contact at all times because their coefficients of expansion differ, but they are configured and positioned such that they are in thermal contact whereby heat from the graphite heater is effectively transferred to the nozzle.
- the graphite susceptor is preferably heated by energy received from induction coil 10. This has been found to be very efficient and to result in good control of the temperature of the nozzle 6 and good control of the flow through the nozzle, particularly when used in combination with a variable vacuum applied to the ladle.
- the nozzle is preferably about twelve inches in length and extends beyond the bottom of the heater by several inches, preferably about 3 inches. Extending the end of the nozzle beyond the susceptor promotes cooling of the nozzle when heating is terminated.
- the nozzle may be of various diameters. Preferably the diameter is from about one-half inch to about one inch. This diameter allows adequate flow of molten metal when the nozzle is heated and permits good control over the flow rate of the metal by application of vacuum to the ladle. Such diameters permit vacuum control of the flow rate during heating and allow the nozzle to clog quickly by cooling of the metal when the flow rate is substantially reduced and heating terminated.
- the nozzle is preferably heated inductively, other methods of heating are possible.
- the graphite tube may be a resistor and heated by passing electrical current through it directly with provided leads.
- the diameter is preferably smaller, e.g., about one-quarter inch. When the diameter is that small, it is possible to shut off flow by simply terminating the heating.
- the nozzle is made of graphite and heated inductively directly by the induction coil, the power to the coil controlling the temperature in the nozzle and the flow rate of the metal.
- the induction coil is preferably water cooled, and the cooling effect due to the presence of the water causes the metal to solidify in the nozzle more rapidly to reduce or stop flow when the power to the coil is reduced or shut off.
- the graphite nozzle can also be cast en bloc with the induction coil with a castable refractory, which improves conduction of heat from the nozzle and metal to the water in a copper induction coil.
- the combination of the cooling effect of the induction coil and vacuum control provides fine flow control of the molten metal.
- an oxide refractory nozzle as disclosed above, can be placed inside a close-fitting graphite susceptor tube and still be heated and cooled by the induction coil.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Details (AREA)
Abstract
A ladle (2) or other container for molten metal (5) is provided with an outlet nozzle (4) that allows a stream of molten metal to flow by heating the nozzle (4) to the melting temperature of the metal (5). The nozzle (4) is, for example, tubular and made of AI2O3 or SiO2 and is surrounded by a graphite tube (8) in thermal contact with the nozzle (4). The nozzle (4) is heated by heating the surrounding graphite tube (S) inductively. Once the temperature of the nozzle (4) exceeds the liquidus temperature of the metal (5) in the ladle (2), the metal (5) will flow out of the ladle (2) through the nozzle (4).
Description
INDUCTION POWERED LADLE BOTTOM NOZZLE
TECHNICAL FIELD
[0001] This application relates to an inductively powered nozzle for controlling the flow of metal from a ladle or other vessel containing molten metal.
BACKGROUND
[0002] It is known to use ladles to contain molten metal in the production of such metals. Typically, the ladle has an outlet at the bottom, which includes a valve that can be controlled. These valves are problematic, however, because they are expensive and require frequent repair or replacement.
SUMMARY OF THE INVENTION
[0003] In accordance with the invention a ladle or other container for molten metal is provided with an outlet nozzle that is easily controlled and less expensive. In one embodiment, a stream of molten metal, e.g., silicon flows through a tubular refractory nozzle by heating the nozzle to the melting temperature of the metal. The nozzle is, for example, tubular and made OfAl2O3 or SiO2 and is surrounded by a graphite tube in thermal contact with the nozzle. The nozzle is heated by heating the surrounding graphite tube inductively. Once the temperature of the nozzle exceeds the liquidus temperature of the metal in the ladle, the metal will flow out of the ladle through the nozzle.
[0004] Alternately the nozzle may be made entirely of graphite, if the impurities that contact with the graphite may impart to the metal are not of concern.
[0005] The rate of flow through the nozzle may be controlled in part also by applying a vacuum to the ladle proper, as is known in the industry. If the vacuum is sufficient, the flow can be controlled very accurately, from a few drops per minute to full flow through the nozzle. It can also be stopped completely, if there is such a need, and re-started later in the process. Thus, accurate control of flow through the nozzle may also be obtained by combining the nozzle of the invention with known techniques.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The figure is a vertical cross section of a ladle having a nozzle in accordance with the invention.
DETAILED DESCRIPTION
[0007] With reference to the figure, a ladle 2, which is preferably made of inductively transparent material, as known in the art, includes an outlet 4. The ladle is used to refine metal 5, such as Si that is to be dispensed through the outlet in the molten state and may
include a refractory material 3. The metal to be refined may be heated by any known means, such as by inductive heating. The outlet comprises a nozzle 6 made of a material that has a melting point higher than that of the material to be dispensed, which is preferably surrounded by insulating refractory material 7. For example, if the metal to be dispensed is Si5 the nozzle may be made of Al2O3, SiO2; ZrO2 or other suitable refractory.
[0008] In the preferred embodiment, the nozzle 6 is engaged with the outlet of the ladle and may be supported by contact with a graphite susceptor tube 8 or by other means. The susceptor tube 8 preferably surrounds the nozzle and is configured to transfer heat to the nozzle 6 to liquefy the metal to be dispensed.
[0009] The heater tube and nozzle are preferably not in physical contact at all times because their coefficients of expansion differ, but they are configured and positioned such that they are in thermal contact whereby heat from the graphite heater is effectively transferred to the nozzle.
[0010] The graphite susceptor is preferably heated by energy received from induction coil 10. This has been found to be very efficient and to result in good control of the temperature of the nozzle 6 and good control of the flow through the nozzle, particularly when used in combination with a variable vacuum applied to the ladle.
[0011] The nozzle is preferably about twelve inches in length and extends beyond the bottom of the heater by several inches, preferably about 3 inches. Extending the end of the nozzle beyond the susceptor promotes cooling of the nozzle when heating is terminated.
[0012] The nozzle may be of various diameters. Preferably the diameter is from about one-half inch to about one inch. This diameter allows adequate flow of molten metal when the nozzle is heated and permits good control over the flow rate of the metal by application of vacuum to the ladle. Such diameters permit vacuum control of the flow rate during heating and allow the nozzle to clog quickly by cooling of the metal when the flow rate is substantially reduced and heating terminated.
[0013] While the nozzle is preferably heated inductively, other methods of heating are possible. For example, the graphite tube may be a resistor and heated by passing electrical current through it directly with provided leads.
[0014] If vacuum control of the flow rate is not to be used, the diameter is preferably smaller, e.g., about one-quarter inch. When the diameter is that small, it is possible to shut off flow by simply terminating the heating.
[0015] In another embodiment, the nozzle is made of graphite and heated inductively directly by the induction coil, the power to the coil controlling the temperature in the nozzle
and the flow rate of the metal. In either embodiment, the induction coil is preferably water cooled, and the cooling effect due to the presence of the water causes the metal to solidify in the nozzle more rapidly to reduce or stop flow when the power to the coil is reduced or shut off.
[0016] The graphite nozzle can also be cast en bloc with the induction coil with a castable refractory, which improves conduction of heat from the nozzle and metal to the water in a copper induction coil. The combination of the cooling effect of the induction coil and vacuum control provides fine flow control of the molten metal. Additionally, an oxide refractory nozzle, as disclosed above, can be placed inside a close-fitting graphite susceptor tube and still be heated and cooled by the induction coil.
[0017] Modifications within the scope of the appended claims will be apparent to those of skill in the art.
Claims
1. An outlet for a ladle comprising a nozzle configured to be heated and allow metal to flow therethrough when heated and to block flow when not heated.
2. An outlet for a ladle according to claim 1 further comprising a graphite susceptor in thermal contact with the nozzle, and an induction coil for heating the susceptor.
3. An outlet for a ladle according to claim 2 in combination with a container for holding molten metal.
4. A container for holding molten metal comprising an outlet nozzle and a cooled induction coil for heating said nozzle when electrical power is applied to said coil and for cooling said nozzle when said electrical power is reduced or terminated.
5. A container according to claim 4 wherein said nozzle comprises graphite.
6. A container according to claim 4 further comprising a graphite susceptor in thermal contact with said nozzle.
7. A method for controlling the discharge of molten metal from a container comprising providing said container with an outlet nozzle, providing means for heating said outlet nozzle, and controlling the temperature of said outlet nozzle.
8. A method according to claim 7 further comprising applying a vacuum to said container.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70944205P | 2005-08-19 | 2005-08-19 | |
| PCT/US2006/032361 WO2007024703A1 (en) | 2005-08-19 | 2006-08-18 | Induction powered ladle bottom nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1920074A1 true EP1920074A1 (en) | 2008-05-14 |
| EP1920074A4 EP1920074A4 (en) | 2009-02-25 |
Family
ID=37771926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06801873A Withdrawn EP1920074A4 (en) | 2005-08-19 | 2006-08-18 | Induction powered ladle bottom nozzle |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20090145933A1 (en) |
| EP (1) | EP1920074A4 (en) |
| JP (1) | JP2009504414A (en) |
| CN (1) | CN101292048A (en) |
| AU (1) | AU2006283520A1 (en) |
| BR (1) | BRPI0615480A2 (en) |
| CA (1) | CA2619756A1 (en) |
| WO (1) | WO2007024703A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008037259A1 (en) * | 2008-08-08 | 2010-02-25 | Doncasters Precision Castings-Bochum Gmbh | Electromagnetic plug |
| CN102228986B (en) * | 2011-06-20 | 2013-05-08 | 中冶京诚工程技术有限公司 | Tundish with electromagnetic heating water gaps |
| WO2012174701A1 (en) * | 2011-06-20 | 2012-12-27 | 中冶京诚工程技术有限公司 | Tundish with electromagnetic heated opening |
| CN102784908A (en) * | 2012-08-30 | 2012-11-21 | 南京钢铁集团冶金铸造有限公司 | Non-drainage pouring technology for steel ladle |
| CN104907550B (en) * | 2014-03-10 | 2017-01-04 | 中国钢铁股份有限公司 | Spray nozzle device |
| JP5723044B1 (en) * | 2014-05-30 | 2015-05-27 | 榮子 山田 | Tundish nozzle for continuous casting of steel and continuous casting method |
| ES2831829T3 (en) * | 2015-12-01 | 2021-06-09 | Refractory Intellectual Property Gmbh & Co Kg | Sliding closure on the nozzle of a metallurgical vessel |
| KR101798077B1 (en) * | 2016-03-17 | 2017-11-16 | 서울시립대학교 산학협력단 | Apparatus for manufacturing metal having increased specific surface area and method using thereof |
| CN107866552A (en) * | 2017-12-21 | 2018-04-03 | 苏州誉阵自动化科技有限公司 | A kind of full-automatic casting equipment |
| JP2021154304A (en) * | 2020-03-25 | 2021-10-07 | 株式会社神戸製鋼所 | BLACK LEAD NOZZLE FOR BOTTOM TAP AND CASTING METHOD FOR Ti-Al-BASED ALLOY |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB962924A (en) * | 1961-01-24 | 1964-07-08 | Bbc Brown Boveri & Cie | Improvements in or relating to apparatus for opening and closing outlets of containers for molten metals |
| US3604598A (en) * | 1969-07-09 | 1971-09-14 | United States Steel Corp | Outlet passage construction for teeming vessels |
| WO1998007536A1 (en) * | 1996-08-22 | 1998-02-26 | Molten Metal Technology, Inc. | Apparatus and method for tapping a molten metal bath |
| US6072166A (en) * | 1995-08-28 | 2000-06-06 | Didier-Werke Ag | Method of operating an inductor |
| US6210629B1 (en) * | 1996-10-08 | 2001-04-03 | Didier-Werke Ag | Method and device for discontinuous parting off of molten mass |
| US6358466B1 (en) * | 2000-04-17 | 2002-03-19 | Iowa State University Research Foundation, Inc. | Thermal sprayed composite melt containment tubular component and method of making same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110128A (en) * | 1974-07-16 | 1976-01-27 | Toshiba Ceramics Co | YOJUKINZOKUHAISHUTSUYONOZURUNO HOONYOJUDOKANETSUSOCHI |
| US4272488A (en) * | 1977-05-25 | 1981-06-09 | John S. Pennish | Apparatus for producing and casting liquid silicon |
| FR2532866B1 (en) * | 1982-09-13 | 1985-06-07 | Pont A Mousson | INDUCTION HEATED CASTING CHANNEL |
| US4710260A (en) * | 1982-12-22 | 1987-12-01 | Texas Instruments Incorporated | Deposition of silicon at temperatures above its melting point |
| GB8313074D0 (en) * | 1983-05-12 | 1983-06-15 | Thornton J M | Refractory product |
| JPH0355488A (en) * | 1989-07-21 | 1991-03-11 | Tokyo Koshuha Denkiro Kk | Bottom pouring type vessel and blocking method for nozzle of the same vessel |
| US5164097A (en) * | 1991-02-01 | 1992-11-17 | General Electric Company | Nozzle assembly design for a continuous alloy production process and method for making said nozzle |
| IT1289009B1 (en) * | 1996-10-21 | 1998-09-25 | Danieli Off Mecc | SPILLING DEVICE FOR ELECTRIC ARC OVEN, SIVIERA OR PANIERA OVEN AND RELATED SPILLING PROCEDURE |
| US6358297B1 (en) * | 1999-12-29 | 2002-03-19 | General Electric Company | Method for controlling flux concentration in guide tubes |
| US7465351B2 (en) * | 2004-06-18 | 2008-12-16 | Memc Electronic Materials, Inc. | Melter assembly and method for charging a crystal forming apparatus with molten source material |
-
2006
- 2006-08-18 JP JP2008527171A patent/JP2009504414A/en active Pending
- 2006-08-18 BR BRPI0615480A patent/BRPI0615480A2/en not_active IP Right Cessation
- 2006-08-18 AU AU2006283520A patent/AU2006283520A1/en not_active Abandoned
- 2006-08-18 WO PCT/US2006/032361 patent/WO2007024703A1/en active Application Filing
- 2006-08-18 CN CNA2006800384626A patent/CN101292048A/en active Pending
- 2006-08-18 CA CA002619756A patent/CA2619756A1/en not_active Abandoned
- 2006-08-18 EP EP06801873A patent/EP1920074A4/en not_active Withdrawn
- 2006-08-18 US US11/990,623 patent/US20090145933A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB962924A (en) * | 1961-01-24 | 1964-07-08 | Bbc Brown Boveri & Cie | Improvements in or relating to apparatus for opening and closing outlets of containers for molten metals |
| US3604598A (en) * | 1969-07-09 | 1971-09-14 | United States Steel Corp | Outlet passage construction for teeming vessels |
| US6072166A (en) * | 1995-08-28 | 2000-06-06 | Didier-Werke Ag | Method of operating an inductor |
| WO1998007536A1 (en) * | 1996-08-22 | 1998-02-26 | Molten Metal Technology, Inc. | Apparatus and method for tapping a molten metal bath |
| US6210629B1 (en) * | 1996-10-08 | 2001-04-03 | Didier-Werke Ag | Method and device for discontinuous parting off of molten mass |
| US6358466B1 (en) * | 2000-04-17 | 2002-03-19 | Iowa State University Research Foundation, Inc. | Thermal sprayed composite melt containment tubular component and method of making same |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2007024703A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2619756A1 (en) | 2007-03-01 |
| BRPI0615480A2 (en) | 2016-09-13 |
| WO2007024703A1 (en) | 2007-03-01 |
| AU2006283520A1 (en) | 2007-03-01 |
| JP2009504414A (en) | 2009-02-05 |
| CN101292048A (en) | 2008-10-22 |
| EP1920074A4 (en) | 2009-02-25 |
| US20090145933A1 (en) | 2009-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20090145933A1 (en) | Induction powered ladle bottom nozzle | |
| US5054664A (en) | Inductively heatable refractory member, inductive coil employable therewith, and process for use thereof | |
| US7336692B2 (en) | Induction furnace for melting semi-conductor materials | |
| CA1212837A (en) | Method of and device for the continuous manufacture of elongate bodies starting from unmolten solid starting material | |
| JP6010178B2 (en) | Method and apparatus for producing glass products from glass melts | |
| JP5822443B2 (en) | Method and apparatus for continuously melting or purifying a melt | |
| JP2009285726A (en) | Tapping method in cold crucible melting furnace | |
| US10383179B2 (en) | Crucible device with temperature control design and temperature control method therefor | |
| EP2238086B1 (en) | Glass-coated wires and methods for the production thereof | |
| JPS5835938B2 (en) | Jiyungarasu no Koushiyu Hachiyousei | |
| JP2009233729A (en) | Preheating method of immersion nozzle for continuous casting, and continuous casting method | |
| WO2009072217A1 (en) | Immersion nozzle and method of continuous casting | |
| JP4746412B2 (en) | Continuous casting method | |
| EP1747701B1 (en) | Induction furnace for melting granular materials | |
| MX2008002352A (en) | Induction powered ladle bottom nozzle | |
| JP2001516282A (en) | Method, apparatus and refractory nozzle for injecting and / or casting liquid metal | |
| CN210036246U (en) | Furnace body structure of casting furnace | |
| US20160091249A1 (en) | Crucibles for melting material and methods of transferring material therefrom | |
| CN107957193A (en) | A kind of Automatic-temperature holding furnace for being used to continuously prepare aluminium alloy semi-solid slurry | |
| JP5579261B2 (en) | Method and apparatus for remelting metal in an electric furnace | |
| KR100790788B1 (en) | Continuous glass melting furnace | |
| TW201006970A (en) | Method of producing a single crystal of semiconductor material | |
| JPH05280875A (en) | Temperature control method in continuous melting flow outlet of material using low temperature crucible | |
| JP2008178908A (en) | Process for electroslag remelting of metal and ingot mold used therefor | |
| JPH05280872A (en) | Low temperature crucible for continuous melting solution supply service with improved thermal efficiency |
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: 20080319 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
| A4 | Supplementary search report drawn up and despatched |
Effective date: 20090126 |
|
| 17Q | First examination report despatched |
Effective date: 20090720 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20091201 |