CN100516253C - Agitation molten pool and on-line setting method - Google Patents
Agitation molten pool and on-line setting method Download PDFInfo
- Publication number
- CN100516253C CN100516253C CNB2007100151374A CN200710015137A CN100516253C CN 100516253 C CN100516253 C CN 100516253C CN B2007100151374 A CNB2007100151374 A CN B2007100151374A CN 200710015137 A CN200710015137 A CN 200710015137A CN 100516253 C CN100516253 C CN 100516253C
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- CN
- China
- Prior art keywords
- base plate
- pond
- molten pool
- pond body
- smelting furnace
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/451—Magnetic mixers; Mixers with magnetically driven stirrers wherein the mixture is directly exposed to an electromagnetic field without use of a stirrer, e.g. for material comprising ferromagnetic particles or for molten metal
-
- 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
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/066—Treatment of circulating aluminium, e.g. by filtration
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
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- 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
- F27D27/00—Stirring devices for molten material
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- 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
- F27D3/145—Runners therefor
-
- 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
- C22B9/003—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals by induction
-
- 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
-
- 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
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
- C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention relates to one kind of stirring melting bath and its on-line setting process. The stirring melting bath includes one heat insulating bath body, one bottom plate of non-magnetic material and with distributed cooling holes and hole covering boards, and melt inlet and melt outlet to the inside cavity and in the side. Its on-line setting process includes setting the bath body between the smelting furnace and the degassing unit, setting a front flow channel to the smelting furnace in the melt inlet, setting a back flow channel to the degassing unit in the melt outlet, and installing a permanent magnetic stirrer below the bottom plate. The present invention is suitable for technical reconstruction of stirrer in old smelting furnace to result in obvious power saving effect.
Description
Technical field
The present invention relates in the non-ferrous metal metallurgy with contactless whipping appts to molten bath and online method to set up thereof that liquation stirs more specifically say so a kind of agitation molten pool and online method to set up thereof.
Background technology
In nonferrous metallurgical process, need stir molten metal.The mode of its stirring is manual stirring at first, and manual the stirring is that the stock that the operative employee holds the band fan wing stirs liquation, has that labour intensity is big, stirring velocity is low, stir uneven drawback, can not guarantee smelting quality.For the Working environment that improves the operative employee, reduce labor intensity, mechanical stirring and induction stirring have appearred in succession.Mechanical stirring is liquation to be stirred under the drive of power with the transmission rod of being with the fan wing, owing to be subjected to the restriction of smelting furnace stove gate size, the stirring scope is little, have the uneven drawback of stirring equally, and stirring head is at high temperature fragile.Induction stirring is to utilize the travelling-magnetic-field that is produced behind many group coil electricities, and molten non-ferrous metal is stirred, and realizes the purpose of stirring, and its weak point is: 1, because travelling-magnetic-field is less to the swept area of liquation, the dead angle very easily occurs stirring; 2, its radiating mode is logical cooling water circulation heat radiation in constituting the hollow conductor of coil, owing to be subjected to the restriction of lead caliber, the flow of water coolant is little, and radiating effect is poor, so magnetic stirrer can only interrupter duty, and each working hour is no more than half an hour; 3, energy consumption height, the magnetic stirrer of one 30 tons smelting furnace is per hour wanted 315 kilowatts of power consumptions.Along with development of technology, released contactless permanent magnetism whipping appts at present again, be that super strong permanent magnet vortex stirrer and the publication number of CN1821695A is the circulation type permanent magnetic stirrer of CN1920073A as publication number.Because super strong permanent magnet vortex stirrer is mounted in the below of body of heater in use near the body of heater position, therefore must there be the space that this agitator is installed the below of body of heater, be suitable for newly-built stove, and for the transformation of the smelting furnace of having built up, because it is the space that agitator is installed is not reserved in the below of smelting furnace, therefore inapplicable.Circulation type permanent magnetic stirrer then be mounted in use body of heater the outside and with chute that the smelting furnace inner chamber is communicated with between, therefore be applicable to and build up but be not the technological transformation of very long smelting furnace duration of service, then inapplicable for the old smelting furnace that those duration of service are very long, because when transforming, will on body of heater, set up the chute hole, in the process of setting up the chute hole, can cause the damage at other position of old body of heater.
Summary of the invention
First purpose of the present invention provides a kind of agitation molten pool that uses permanent magnetic stirrer for old smelting furnace;
Second purpose of the present invention provides the online method to set up of this agitation molten pool.
In order to realize above-mentioned purpose, the agitation molten pool that is provided, the pond body that comprises insulation, its constructional feature is that the outer bottom at the bottom of the pond is provided with and base plate affixed at the bottom of the pond and that make of nonmagnetic substance, be intervally distributed with base plate cooling hole on the base plate, the upper port sealing in each base plate cooling hole is coated with the blind patch that is connected with base plate and makes of nonmagnetic substance, and the side of pond body is provided with the liquation import and the liquation that are communicated with the pond intracoelomic cavity and exports.
Above-mentioned pond body comprises shell and the thermal insulation layer affixed with outer casing inner wall, and base plate is the centre portions of the bottom surface or the shell bottom surface of shell.
In order to improve the heat insulation effect of agitation molten pool, be coated with the pond body cover plate of making and taking off with lagging material in the upper port sealing of pond body.
Guaranteeing under the prerequisite of base plate cooling hole to the base plate cooling, for easy to make, the shape in above-mentioned base plate cooling hole is curved rectangular in two ends.
In time discharge for the liquation that when blowing out is keeped in repair, will rest in the intracoelomic cavity of pond, prevent to be set in the inner chamber of pond body, be positioned at the weif orifice that intracoelomic cavity bottom position place, pond is provided with the belt switch valve at the pond body side surface.
The online method to set up of agitation molten pool provided by the present invention comprises the steps:
A, the ground location between smelting furnace and degasifying device are provided with the pond body, specifically be earlier will be pre-processed and the shell that has an above-mentioned base arrangement be installed in ground location between smelting furnace and the degasifying device, fill in the enclosure again and the affixed thermal insulation layer of outer casing inner wall;
B, the preceding chute that is communicated with smelting furnace is set in the liquation ingress of pond body;
C, the back chute that is communicated with degasifying device is set in the liquation exit of pond body;
D, the floor below at the bottom of the pond are installed permanent magnetic stirrer.
Above-mentioned smelting furnace comprises smelting furnace, holding furnace, alloying furnace or dual chamber furnace.
Agitation molten pool provided by the present invention, after online the setting, during work in smelting furnace through the first liquation that stirs, flow into the inner chamber of agitation molten pool by preceding chute, carry out secondary stirring, the liquation after the secondary stirring flows into degasification in the degasifying device by the back chute.
Liquation carries out secondary stirring in agitation molten pool principle is: permanent magnetic stirrer has adopted by the high performance neodymium iron boron permanent magnet and the yoke of making of magnetically permeable material, the permanent magnetic that secondary yoke constitutes is, this permanent magnetic is to place in the non magnetic permanent magnet outer cover, magneticstrength is strong, under the drive of the frequency-adjustable speed-adjustable motor of controlling in operation sequence by programmable logic controller, alternately rotate and reverse, produce rotatingfield, the magnetic line of force of this rotatingfield enters the pond intracoelomic cavity at the bottom of passing base plate and pond, liquation in the intracoelomic cavity of pond is circled round rotate and roll, realize secondary stirring liquation.Selecting for use nonmagnetic substance to make the purpose of base plate, is can not constitute short circuit, the works better of assurance permanent magnetic stirrer to the N utmost point, the S utmost point in the permanent magnetic system for base plate when permanent magnetic stirrer work.When permanent magnetic ties up to high rotary speed working, the eddy current that rotatingfield produces on base plate can make the temperature of base plate be higher than 100 ℃, influence the work-ing life that permanent magnetic is, be intervally distributed with base plate cooling hole on the base plate, in order to reduce the eddy current that rotatingfield produces on base plate, reduce the temperature of base plate exactly.
Learn by above narration, agitation molten pool provided by the invention and online method to set up thereof, its beneficial effect is: 1, do not destroy the structure of former smelting furnace and degasifying device, less investment is applicable to the technological transformation to old smelting furnace whipping appts; 2, little power consumption, the power of permanent magnetic stirrer is normally below 5KW, and power savings is remarkable; The temperature of base plate is lower than 100 ℃ when 3, working online, and only needs to adopt simple air cooling system and provision for thermal insulation on permanent magnetic stirrer, and the permanent magnetic that just can make permanent magnetic stirrer is in the environment that is operated in below 50 ℃, long service life, and failure rate is low.
Description of drawings
Embodiments of the invention are illustrated in conjunction with the accompanying drawings, wherein:
Fig. 1 is the structural representation of agitation molten pool;
Fig. 2 is the pond bottom structure synoptic diagram of agitation molten pool;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the online synoptic diagram that is provided with of agitation molten pool;
Fig. 5 is the structural representation of permanent magnetic stirrer;
Fig. 6 is the vertical view of Fig. 5.
Among the figure: 1 is shell, and 2 is thermal insulation layer, and 3 is base plate, 4 are base plate cooling hole, and 5 is blind patch, and 6 is the liquation import, 7 are the liquation outlet, and 8 is pond body cover plate, and 9 is weif orifice, 10 is smelting furnace, and 11 is preceding chute, and 12 is the back chute, 13 is degasifying device, and 14 is permanent magnetic stirrer, and 15 is the cooling blower air outlet, 16 is nonmetal compound heat-insulation layer, and 17 is permanent magnet, and 18 is temperature sensor, 19 is yoke, and 20 is secondary yoke, and 21 is cooling blower, 22 is central shaft, and 23 is frame, and 24 is small pulley, 25 is the frequency-adjustable speed-adjustable motor, and 26 is road wheel, and 27 is transmission belt, 28 is big belt wheel, and 29 is non magnetic permanent magnet outer cover.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, the described agitation molten pool of embodiment, comprise by shell 1 and the pond body that constitutes with the affixed thermal insulation layer 2 of shell 1 inwall, outer bottom at the bottom of the pond is provided with and base plate 3 affixed at the bottom of the pond and that make of nonmagnetic substance, base plate 3 is centre portionss of the bottom surface or shell 1 bottom surface of shell 1, that draw among the figure is the latter, be intervally distributed with a plurality of base plate coolings hole 4 on the base plate 3, three have been drawn among the figure, the shape in each base plate cooling hole 4 is curved rectangular in two ends, the upper port in each base plate cooling hole 4 is coated with the method sealing of welding and is connected with base plate 3 and with the blind patch 5 of nonmagnetic substance making, the side of pond body is provided with liquation import 6 and the liquation outlet 7 that is communicated with the pond intracoelomic cavity, the upper port sealing of pond body is coated with the pond body cover plate 8 of making and taking off with lagging material, and the pond body side surface is positioned at the weif orifice 9 that intracoelomic cavity bottom position place, pond is provided with the belt switch valve.
With reference to Fig. 4, the online method to set up of this agitation molten pool comprises the steps:
A, the ground location between smelting furnace 10 and degasifying device 13 are provided with the pond body, specifically be earlier will be pre-processed and the shell 1 that has an above-mentioned base arrangement be installed in ground location between smelting furnace 10 and the degasifying device 13, filling and the affixed thermal insulation layer 2 of shell 1 inwall in shell 1 again;
B, the preceding chute 11 that is communicated with smelting furnace 10 is set at liquation import 6 places of pond body;
C, export 7 places at the liquation of pond body the back chute 12 that is communicated with degasifying device 13 is set;
D, permanent magnetic stirrer 14 is installed below the base plate at the bottom of the pond 3.
Above-mentioned smelting furnace 10 comprises smelting furnace, holding furnace, alloying furnace or dual chamber furnace.
With reference to Fig. 5 and Fig. 6, permanent magnetic stirrer 14 comprises frame 23, it is overhanging that central shaft 22 passes frame 23 two ends, the upper end of central shaft 22 is by secondary yoke 20, yoke 19 is connected with polylith permanent magnet 17, these permanent magnets 17 are aplysia punctata uniformly at intervals, and the polarity of the end in the same way of two adjacent permanent magnets 17 is opposite, every permanent magnet 17 is neodymium iron boron permanent magnets, these neodymium iron boron permanent magnets are arranged in the inner chamber that is fixed in the non magnetic permanent magnet outer cover 29 on the frame 23, temperature sensor 18 is housed on the side of non magnetic permanent magnet outer cover 29, end face is provided with nonmetal compound heat-insulation layer 16, on non magnetic permanent magnet outer cover 29, cooling blower 21 is housed, the lower end of central shaft 22 is connected with big belt wheel 28, big belt wheel 28 is connected with small pulley 24 by transmission belt 27, small pulley 24 is fixed in the rotating shaft of frequency-adjustable speed-adjustable motor 25, frequency-adjustable speed-adjustable motor 25 is controlled realization in operation sequence by the programmable logic controller in the housing and is alternately rotated and reverse, and by small pulley 24, transmission belt 27, big belt wheel 28, central shaft 22 drives polylith permanent magnet 17 and synchronously rotates and reverse, produce rotatingfield, the magnetic line of force of this rotatingfield enters the pond intracoelomic cavity at the bottom of passing base plate 3 and pond, liquation in the intracoelomic cavity of pond is circled round rotate and roll, realize secondary stirring liquation.
Claims (7)
1, a kind of agitation molten pool, the pond body that comprises insulation, it is characterized in that outer bottom at the bottom of the pond is provided with and base plate (3) affixed at the bottom of the pond and that make of nonmagnetic substance, be intervally distributed with base plate cooling hole (4) on the base plate (3), the upper port sealing in each base plate cooling hole (4) is coated with and is connected with base plate (3) and with the blind patch (5) of nonmagnetic substance making, the side of pond body is provided with the liquation import (6) and the liquation that are communicated with the pond intracoelomic cavity and exports (7).
2, agitation molten pool according to claim 1 is characterized in that the pond body comprises shell (1) and the thermal insulation layer (2) affixed with shell (1) inwall, and base plate (3) is the centre portions of the bottom surface or shell (1) bottom surface of shell (1).
3, agitation molten pool according to claim 1 and 2 is characterized in that being coated with the pond body cover plate (8) of making and taking off with lagging material in the upper port sealing of pond body.
4, agitation molten pool according to claim 1, the shape that it is characterized in that base plate cooling hole (4) are curved rectangular in two ends.
5, agitation molten pool according to claim 1 and 2 is characterized in that being positioned at the weif orifice (9) that intracoelomic cavity bottom position place, pond is provided with the belt switch valve at the pond body side surface.
6, the online method to set up of agitation molten pool according to claim 1 is characterized in that comprising the steps:
A, the ground location between smelting furnace (10) and degasifying device (13) are provided with the pond body, specifically be earlier will be pre-processed and the shell (1) that has an above-mentioned base arrangement be installed in ground location between smelting furnace (10) and the degasifying device (13), filling and the affixed thermal insulation layer (2) of shell (1) inwall in shell (1) again;
B, locate to be provided with the preceding chute (11) be communicated with smelting furnace (10) in the liquation import (6) of pond body;
C, locate to be provided with the back chute (12) that is communicated with degasifying device (13) in the liquation of pond body outlet (7);
Permanent magnetic stirrer (14) is installed in D, the base plate at the bottom of the pond (3) below.
7, the online method to set up of agitation molten pool according to claim 6 is characterized in that smelting furnace (10) comprises smelting furnace, holding furnace or alloying furnace.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100151374A CN100516253C (en) | 2007-07-10 | 2007-07-10 | Agitation molten pool and on-line setting method |
| PCT/CN2007/070683 WO2009006775A1 (en) | 2007-07-10 | 2007-09-13 | A stirring molten bath, an online stirring apparatus and the method of laying out the apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100151374A CN100516253C (en) | 2007-07-10 | 2007-07-10 | Agitation molten pool and on-line setting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101082081A CN101082081A (en) | 2007-12-05 |
| CN100516253C true CN100516253C (en) | 2009-07-22 |
Family
ID=38911861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100151374A Expired - Fee Related CN100516253C (en) | 2007-07-10 | 2007-07-10 | Agitation molten pool and on-line setting method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100516253C (en) |
| WO (1) | WO2009006775A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2464921B (en) | 2008-10-25 | 2012-09-19 | Solios Thermal Ltd | Apparatus for inducing flow in a molten material |
| GB2488804A (en) * | 2011-03-09 | 2012-09-12 | Solios Thermal Ltd | Inducing stirring and extraction in a molten material |
| JP5819270B2 (en) * | 2012-08-08 | 2015-11-18 | 高橋 謙三 | Permanent magnet type cylindrical molten metal stirrer and melting furnace with permanent magnet pump |
| CN102912149B (en) * | 2012-10-25 | 2014-09-10 | 苏州博能炉窑科技有限公司 | Turbulent flow structure of degassing device |
| CN110062867A (en) * | 2016-11-26 | 2019-07-26 | 阿尔泰克欧洲有限公司 | Fusing and/or the improvement and relative improvement of stirring molten metal |
| CN112553474B (en) * | 2020-11-04 | 2023-01-31 | 芜湖楚江合金铜材有限公司 | Smelt nitrogen gas mixing stirring device for compartment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1959979C3 (en) * | 1969-11-29 | 1978-05-11 | Aeg-Elotherm Gmbh, 5630 Remscheid | Traveling field inductor for generating an electromagnetic traveling field |
| JPS5929975A (en) * | 1982-08-10 | 1984-02-17 | 神鋼電機株式会社 | Furnace for electromagnetic agitation |
| JPH07301491A (en) * | 1994-05-02 | 1995-11-14 | Shinko Electric Co Ltd | Heat insulating furnace for aluminum |
| CN2802404Y (en) * | 2005-07-01 | 2006-08-02 | 贵阳铝镁设计研究院 | Stirring type aluminium holding furnace |
-
2007
- 2007-07-10 CN CNB2007100151374A patent/CN100516253C/en not_active Expired - Fee Related
- 2007-09-13 WO PCT/CN2007/070683 patent/WO2009006775A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101082081A (en) | 2007-12-05 |
| WO2009006775A1 (en) | 2009-01-15 |
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| ASS | Succession or assignment of patent right |
Owner name: SHANDONG WALTER MAGNETIC TECHNOLOGY CO. Free format text: FORMER OWNER: HUATE MAGNETOELECTRIC APPARATUS CO., LTD., WEIFANG CITY Effective date: 20080111 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080111 Address after: Walter Road, Linqu Economic Development Zone, Weifang City, Shandong Province, China: 262600 Applicant after: Shandong Huate Magnet Technology Co., Ltd. Address before: Walter Road, Linqu Economic Development Zone, Weifang City, Shandong Province, China: 262600 Applicant before: Weifang Huate Magnetoelectric apparatus Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20170710 |