CN101323892A - Bottom anode side conductive direct current ladle furnace - Google Patents
Bottom anode side conductive direct current ladle furnace Download PDFInfo
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- CN101323892A CN101323892A CNA2008100125730A CN200810012573A CN101323892A CN 101323892 A CN101323892 A CN 101323892A CN A2008100125730 A CNA2008100125730 A CN A2008100125730A CN 200810012573 A CN200810012573 A CN 200810012573A CN 101323892 A CN101323892 A CN 101323892A
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Abstract
The invention discloses a ladle furnace which is conductive and direct-current at a bottom anode side. The ladle furnace of the invention comprises a buggy ladle part and a ladle part and is characterized in that a buggy ladle body is provided with a side bottom anode automatic clamping device which has two symmetrical clamping chunks, wherein, the clamping face of each clamping chunk is connected with a heavy-current water-cooling switch the outside of which is provided with a water cooling pipe; two side bottom anode conductive bumps, which have a compound structure of a metallic part and a non-metallic part respectively, are arranged at the side face of the bottom of a ladle body as bottom anodes and connected with the ladle detachably. By adopting the ladle furnace which is conductive and direct-current at the bottom anode side, the consumption by graphite electrodes is greatly reduced and the noise is relatively low, the arc length short, the submerged arc good, temperature rise fast and carburetion of the molten steel low. In addition, the ladle furnace of the invention is applicable to heat and refine low-carbon steel and ultra-low-carbon steel and less refractories are consumed by the ladle with high heating efficiency so as to save energy.
Description
Technical field
The invention belongs to the smelting equipment technical field, particularly a kind of bottom anode side conductive direct current ladle furnace.
Background technology
Ladle refining furnace is that the crude steel that is used for electric furnace or converter are poured into ladle carries out refining, makes it to become the qualified molten steel that meets the demands.Ladle furnace refining mainly is by the white slag in the bag, in reducing atmosphere, molten steel is stirred and by Graphite Electrodes the molten steel through thick furnace in wrapping is carried out electric-arc heating purified metallurgical process by the bag bottom blowing argon gas of going into.Because argon gas stirs the chemical reaction velocity that has quickened between steel and the slag, carries out temperature compensation with electric-arc heating, can guarantee long tap to tap time, thereby oxygen, sulphur content and non-metallic inclusion in the steel are reduced greatly.
Used steel-making refining furnace generally all is the three-phase alternating current ladle furnace both at home and abroad at present, and this refining furnace equipment is simple, and investment cost is relatively low, and flexible operation and refining effect are better.Its weak point mainly contains 3 points:
The one, the refractory consumption rate height: three arrangement of electrodes are on the ladle mouth, because utmost point heart circle is bigger, the high-temperature zone is nearer apart from the bag wall, has caused the refractory corrosion speed on Bao Bi top fast.
The 2nd, consumption of electrode is fast: because three root graphite electrodes are arranged on the ladle mouth, because the effect of alternating-current, make alternating current arc produce the burning of inclined to one side arc and caused the electrode tip crack performance, other three electrodes are when heating flame, wherein electrode also will be subjected to the thermal radiation of other two electrodes, factors such as " cathode spot " that forms because of emitting electrons, thereby electrode tip temperature in addition is low, thus caused the electrode loss to accelerate.
The 3rd, noise is big, and environmental pollution is serious: because the unbalancedness of three-phase electrode and the unstable of alternating current arc, in the heated by electrodes refining process, noise is big especially, and environment has been caused pollution.
In view of the weak point of three-phase alternating current ladle refining ladle furnace, people are in numerous and confused exploitation DC ladle furnace at present.It is reported that the DC ladle furnace great majority of having used at present all are to adopt three electrodes or two electrodes top conduction, also have few part to adopt end electrically conducting manner.
Adopt three electrodes and two electrodes top conduction that two kinds of forms are arranged:
One is that three (or two) electrodes all are Graphite Electrodes, and wherein one is negative electrode, and two (or one) are anode.Two (or one) anodes insert in the slag, by negative electrode starting the arc heating molten steel.The disadvantage of this structure is that the anode depth of penetration is difficult to accurate control, thereby cause the refining process molten steel recarburization serious, sometimes reach more than 0.2%, can't add the heat refining middle low carbon steel, more can't the refining ultra low-carbon steel: in addition, because two (or one) Graphite Electrodess insert in the slag, graphite electrode consumption is fast, reaches more than the 1.9mm/min.
Two is that negative electrode is a Graphite Electrodes in three (or two) electrodes, and two (or one) anodes are the soft steel metal anode.Two (or one) anodes insert in the slag, and along with purified carries out, metal electrode consumes gradually.The disadvantage of this structure is that the metal electrode consumption is big, and heating current is difficult to control, and electrode is changed frequent, and labour intensity is big, the cost height.
Adopt the mode of single electrode heating to be, top, top negative electrode is a Graphite Electrodes, and the bottom is an end anode; , end anode adopts multiple layer metal and the ceramic structure formation of forming to end anode arrangement at the end at bag, and the shortcoming of this structure formation is the fusion loss along with the metal level in the conducting electrode, and the erosion of ceramic phase is accelerated, and work-ing life is low.And in operating process, because misoperation, may cause metal level end oxidation dry slag and cause starting the arc difficulty.
Summary of the invention
At the prior art problem, the invention provides a kind of bottom anode side conductive direct current ladle furnace.
Bottom anode side conductive direct current ladle furnace comprises buggy ladle part and ladle part.
Buggy ladle partly comprises anode automatic clamping device at the bottom of buggy ladle CD-ROM drive motor, buggy ladle car body, ladle support and the side.
The anode automatic clamping device is positioned on the buggy ladle car body at the bottom of the side, the anode automatic clamping device has two symmetric clamping dops at the bottom of the side, two bottoms that clamp dop are passed with rotating shaft, the two ends of rotating shaft are fixed on two clamping dop supports of buggy ladle, all be connected with big electric current water-cooled switch on the clamping surface of each clamping dop, the big electric current water-cooled switch outside has water-cooled tube, one end of switch is connected with the rectifier power source output terminal, and the other end is connected with the clamping surface of the clamping dop of anode automatic clamping device at the bottom of the side.
Ladle partly comprises anode conducting piece at the bottom of ladle body, clad, gudgeon, suspension basket, supporting seat, the side, slide gate nozzle and Bottom Argon Blowing Device.
The anode conducting piece was as end anode at the bottom of ladle body bottom sides was provided with two symmetric sides, the material of anode conducting piece is the composite structure of metal part and non-metallic part at the bottom of the side, wherein metal part is divided into austenitic stainless steel, the material of non-metallic part is graphitiferous 6～20% by weight percentage, contain magnesium oxide 50～75%, trioxygen-containingization two aluminium 5～44%, non-metallic part is embedded in the groove of metal part, the non-metallic part of anode conducting piece is inserted into the ladle body interior at the bottom of the side, the metal part is connected with ladle body bottom sides at the ladle outer wall, and its mode of connection is detachable.
The ladle body outside has suspension basket, and pipelines such as water, argon gas, cable insert suspension basket through apparatus for suspension, and then give each corresponding site; Near near the ladle wall, Bottom Argon Blowing Device comprises Argon pipe and argon gas coupling device to slide gate nozzle in ladle body bottom, and wherein the Argon pipe is located at ladle body bottom centre position, and the argon gas coupling device can be communicated with argon gas pipeline and Argon pipe.
Water pipeline can insert the water-cooled tube in the big electric current water-cooled switch outside by suspension basket.
The principle of work of bottom anode side conductive direct current ladle furnace of the present invention is:
When carrying out refining operation, ladle is hung on the buggy ladle, ladle bottom is pressed onto and clamps the dop bottom, gudgeon falls into the buggy ladle support but is not pressed on the buggy ladle support, the gravity of ladle self makes two to clamp dops and rotate by rotating shaft, and the clamping surface that clamps dop is clamped to the metal part of anode conducting piece outer end at the bottom of two sides together with big electric current water-cooled switch; Under the effect of elevator, Graphite Electrodes enters in the ladle by ladle clad hole, and rectifier power source is converted into direct current with alternating-current, and gives Graphite Electrodes and end anode supply, and the water-cooled tube of simultaneously big electric current water-cooled switch feeds cold water; The termination and the air between the molten steel of Graphite Electrodes are breakdown, produce high-temperature electric arc, thereby the molten steel in the ladle is heated.
When refining is finished, under the effect of elevator, Graphite Electrodes leaves in ladle, ladle is sling from buggy ladle, utilize the skew of gripping unit center of gravity, clamp dop and open automatically, big electric current water-cooled switch separates with anode conducting piece at the bottom of the side thereupon, power supply is cut off, and gets ready for next ladle is in place.
The main effect of side conduction ladle, the one, as the reaction vessel of refining furnace molten steel; Another is from the refining of tapping, and arrives the transport box of cast at last; The 3rd, play electric action.The ladle bottom side is symmetric to be provided with the conducting block of two nonmetal and metal composite structures as end anode.The symmetric side that is arranged in ladle of anode at the bottom of two, both guaranteed the symmetrical distribution from bottom to top of electric current in the ladle heat-processed, guarantee arc partially of direct current arc, and electric current some resistance heat in the flowing of molten steel inside heats the thermo-efficiency height to molten steel.
The characteristics of bottom anode side conductive direct current ladle furnace of the present invention are:
1, electrically conducting manner: ladle furnace top is a graphite negative electrode, anode at the bottom of two sides of ladle body of heater bottom sides symmetric arrangement, two electric currents in bottom are aggregated on the graphite cathode on ladle top through ladle sidewall symmetry, form symmetric stirring magnetic field, and it is even to help molten steel composition.
2, side conduction ladle: the ladle bottom side is symmetric to be provided with the conducting block of two nonmetal and metal composite structures as end anode, the symmetric side that is arranged in ladle of anode at the bottom of two, both guaranteed the symmetrical distribution from bottom to top of electric current in the ladle heat-processed, guarantee the not inclined to one side arc of direct current arc, and electric current some resistance heat in the flowing of molten steel inside heats the thermo-efficiency height to molten steel.
3, anode at the bottom of the composite structure side: compound side anode mainly contains two portions and forms: the one, and non-metal part, its main raw is graphite, magnesium oxide and aluminium sesquioxide; The 2nd, the metal part, it is to be made by austenitic stainless steel.Nonmetal and metal composite is integral.
4, anode gripping mechanism at the bottom of the buggy ladle side: buggy ladle is monosymmetric be provided with side at the bottom of anode step up dop, when ladle winches on the buggy ladle, utilize the gravity of ladle self to make two to clamp at the bottom of the side that dops are clamped to ladle voluntarily on the anode conducting piece, need not additionaling power, save energy; When ladle is hung away, utilize and to step up the skew at device center, make and step up dop and open automatically, for next ladle in place ready; These actions need not artificial interference, and are safe and reliable.
The application of bottom anode side conductive direct current ladle furnace of the present invention in rectification systems be as shown in Figure 1:
Rectification systems comprises power-supply system, elevator system, water, electricity and gas pipeline system, bottom anode side conductive direct current ladle furnace of the present invention and instrument computer detection system.
Power-supply system comprises transformer, rectifier power source, reactor and short net.
Elevator system comprises elevator drives motor, elevator column, transverse arm, top negative electrode gripping unit and Graphite Electrodes.
Wherein rectifier power source is converted into direct current with the alternating-current of transformer input, powers to Graphite Electrodes by short net, and receive an end of big electric current water-cooled switch behind reactor, to end anode supply; Ladle furnace is when adding heat refining, owing to reasons such as argon gas stirrings, the molten steel ground roll is moving bigger, heating current changes greatly, impact to power supply is bigger, might cause the frequent tripping operation of power supply and the effect of influence heating, and the purpose that adds reactor is exactly to hinder the unexpected variation of electric current in the heat-processed, reduce the impact of the variation of electric current, guarantee heating purified continuity power supply; The effect of short net is a conductor of carrying big electric current.
Transverse arm is top negative electrode gripping unit fixedly, and lifting column is used to support transverse arm; The elevator drives motor is used for and the lifting that drives column; Top negative electrode gripping unit is mainly used in chucking and loosens Graphite Electrodes, to adjust the distance of Graphite Electrodes and molten steel face.
The instrument computer detection system is made up of active station and network system, and the PLC system adopts siemens S7-300 system.
Whole processing unit adopts PLC control, establish centralized control station at operation room, and the other operation box of the machine of establishing in the stokehold, other and the concentrated two kinds of operating method of realization machine, the LF stove adopts automatically and manual two kinds of controls, ordinary production adopts operation automatically, and debug, when maintenance and fault with machine manually other or semi-automatic operation.
Respectively ladle furnace body each several part equipment, dynamic medium system and rise fall of electrodes are controlled and regulated by the PLC Controlling System, each several part equipment is normally carried out and guarantee the electric arc working stability.But according to technological operation needs flexible power input, system also has the automatic starting the arc and prevents that electrode from inserting the defencive function and the manual transition function of rise fall of electrodes adjusting of molten steel.
Each integral part major function comprises as follows:
1, the PLC major function is:
1) various signals collecting: comprise that mainly the various electric parameters of operation of equipment, liquid steel temperature, water coolant and other various energy medium parameters, gas stirring parameter, heating power input, material add parameter signals collecting such as (artificial inputs).
2) logical program control.
3) signal alarm.
4) with the computer communication.
5) to on-site transfer control signal.
2, the major function and the monitored picture of management control level (upper computer):
Be made up of industrial computer of being furnished with indicating meter and printer etc., functions such as the calculating of realization LF stove automatic control system, management, record, demonstration show various signals, parameter, picture, storage data, carry out fault alarm on active station.Report printing etc. is provided, and realize man-machine dialogue, send instruction, the composition automatic control system.
Concrete major function is:
1) main monitored picture.After system's operation, enter this picture automatically.This is drawn and shows body of heater and valve station.Valve station part shows flow, pressure and the rapid cut-off valve on off state of each gas.This picture also shows temperature of cooling water and pressure, flue gas temperature degree, liquid steel temperature.
2) this picture below shows the CK call key of following monitored picture: report to the police and the operating record picture, electric current, voltage, power historical trend panel (inquiry and printing), gas flow, pressure history trend picture (inquiry and printing), temperature of cooling water, pressure history trend picture (inquiry and printing), regulate and control picture and (control each gas rapid cut-off valve break-make, set the aperture of regulating flow or directly setting flow control valve), the apparatus parameter setting picture (set by each alarming value and delay time, controlled variable is set, lifting speed degree of hastening is set, read, write, print), production data is printed.
Bottom anode side conductive direct current ladle furnace of the present invention is compared with the three-phase alternating current ladle furnace, and bottom anode side conductive direct current ladle furnace has the following advantages:
1, graphite electrode consumption reduces significantly, and the consumption of Graphite Electrodes only is about 1/3 of three-phase alternating current ladle furnace.Because Graphite Electrodes is made negative electrode, do not have " cathode spot " that forms because of emitting electrons, thereby the electrode tip temperature is low.And direct current arc is stably vertically burnt at electrode tip, and is in the top in molten bath all the time, has eliminated the burning of alternating current arc deflection and the electrode tip crack performance of generation; The single electrode electric arc furnace generally adopts the identical electrode diameter of three-phase ac electric arc furnace with equal capacity, so the lateral area of Graphite Electrodes reduces nearly 2/3 than ac arc furnace in the DC ladle furnace.The side that exchanges every root graphite electrode in the ladle furnace is subjected to the arc radiation of other two electrodes, side temperature height.The direct current electric arc furnace flameholding has significantly reduced collapse material and electrode seismism during fusing, the loss of mechanicalness electrode fracture is few.
2, voltage fluctuation and flickering are little, and be little to the impact of prime electrical network.
3, only need a cover electrode system, can use and the Graphite Electrodes of three-phase alternating current ladle furnace with diameter.
4, shorten the heat, can reduce melting unit power consumption 5%～10%.
5, noise level on average can lower 10～15dB.
6, refractory consumption rate can lower about 40%, and electric arc is in the central burner of stove all the time in the single electrode DC ladle furnace, does not generally have the hot spots on the furnace wall phenomenon, the thermal load of furnace wall is even, and electric arc is far away apart from the furnace wall, so the furnace wall, and particularly the thermal load of slag lining is littler than exchanging ladle furnace; The life-span of bottom electrode is generally very high, and is general and furnace lining is synchronous, the unlikely increase that causes refractory consumption rate.
7, metal pool exists the intensive circulation to stir all the time.
8, gain quick return in investment.
9, stable operation, power input height, intensification efficient height, fusing is evenly quick, and productivity improves, and smoke discharge amount reduces.
10,, make that molten steel finished product sulphur and hydrogen richness further reduce after the refining because electrochemical effect.
Bottom anode side conductive direct current ladle furnace of the present invention is compared with three electrodes or two electrodes top conductive direct current ladle furnace, and bottom anode side conductive direct current ladle furnace has the following advantages:
1, graphite electrode consumption reduces, and smelting cost is low.Owing to adopt the type of heating on a root graphite electrode ladle top, the consumption of Graphite Electrodes very three heated by electrodes modes about 1/3～1/4, smelting cost is low.
2, molten steel recarburization is little, is fit to add heat refining low-carbon (LC) and ultra low-carbon steel.Owing to adopt single electrode top type of heating, there are not two root graphite electrodes that insert in the slag, molten steel recarburization is low, is fit to the refining ultra low-carbon steel.
3, simple to operate, labour intensity is low.No consumption shaped metal electrode inserts in the slag, no metal electrode consumption, and no frequent electrode replacing need not machined metal electrodes and change metal electrode continually, minimizing labour intensity.
Bottom anode side conductive direct current ladle furnace of the present invention is compared with the general low DC ladle furnace of conducting electricity of single electrode, and bottom anode side conductive direct current ladle furnace has the following advantages:
1, the bottom electrode long service life is safe and reliable.Because what it adopted is the electrical conductor of metal and nonmetal compound structure, molten the shaking property of heat resistanceheat resistant of invading of this electrical conductor high temperature resistance is good, and the melting loss speed of electrode is slow, and long service life is safe and reliable.
2, save the energy.Owing to adopted the bottom anode side conductive mode, buggy ladle is monosymmetric be provided with the side of water-cooled at the bottom of anode step up dop, when ladle winches on the chassis, utilize the action of gravity of ladle self that two fastening board dops are clamped at the bottom of the side of ladle on the anode conducting piece voluntarily, need not additionaling power, save energy; When ladle is hung away, utilize and to step up the skew at device center, make and step up dop and open automatically, for next ladle in place ready; These actions need not artificial interference, and are safe and reliable.
3, adopt isolating voluntarily big electric current water-cooled switch, when buggy ladle ran to the refining station, switch closed automatically, and when buggy ladle was left the refining station, the switch automatic opening need not artificial interference, and was simple to operate, safe and reliable.
Description of drawings
Fig. 1 is the application synoptic diagram of bottom anode side conductive direct current ladle furnace of the present invention in rectification systems, among the figure 1, transformer, and 2, conducting copper, 3, rectifier power source, 4, reactor, 5, short net, 6, water-cooled cable, 7 elevator drives motors, 8, lifting column, 9 transverse arms, 10, top negative electrode gripping unit, 11, Graphite Electrodes, 12, clad, 13, ladle body, 14, the anode automatic clamping device clamps dop, 15 buggy ladle car bodies at the bottom of the side.
Fig. 2 is a bottom anode side conductive direct current ladle furnace synoptic diagram of the present invention, among the figure 13, the ladle body, 14, the anode automatic clamping device clamps dop at the bottom of the side, 15, buggy ladle car body, 16, anode conducting piece at the bottom of the side, 17, the buggy ladle CD-ROM drive motor, 18, big electric current water-cooled switch, 19, gudgeon, 20, anode automatic clamping device rotating shaft at the bottom of the side, 21, the buggy ladle support.
Embodiment
Bottom anode side conductive direct current ladle furnace as shown in Figure 2, have anode automatic clamping device at the bottom of the side on the buggy ladle car body 15, the anode automatic clamping device has two symmetric clamping dops 14 at the bottom of the side, two bottoms that clamp dop 14 are passed with rotating shaft 20, the two ends of rotating shaft 20 are fixed on two clamping dop supports of buggy ladle, all be connected with big electric current water-cooled switch 18 on the clamping surface of each clamping dop, big electric current water-cooled switch 18 outsides have water-cooled tube, one end of switch is connected with the rectifier power source output terminal, and the other end is connected with two clamping surfaces that clamp dop 14 of anode automatic clamping device at the bottom of the side.
Anode conducting piece 16 was as end anode at the bottom of ladle body 13 bottom sides were provided with two symmetric sides, the material of anode conducting piece 16 is the composite structure of metal part and non-metallic part at the bottom of the side, wherein metal part is divided into austenitic stainless steel, the material of non-metallic part is graphitiferous 10% by weight percentage, contain magnesium oxide 74%, trioxygen-containingization two aluminium 16%, non-metallic part is embedded in the groove of metal part, and be in the ladle body interior, and metal part does not contact the molten steel in the ladle, nonmetally during work contacts its existing excellent conducting performance with molten steel, high temperature resistant again, high-temperature resistant is 1800 ℃; The metal part is connected with clamping dop 14 with the big electric current water-cooled switch 18 of outside, the intensity height, and the life-span is long.Anode conducting piece 15 metals parts with the mode of connection of ladle outer wall is at the bottom of the side: with bolt with side at the bottom of anode conducting piece 15 be fixed on the ladle body 13; During dismounting bolt backed out and to pull down anode conducting piece 16 at the bottom of the side; Install, dismantle very convenient; And anode mode of connection of this end do not cause any pollution to molten steel, can refining soft steel and ultra low-carbon steel.The advantage of this design is that its existing nonmetallic high-temperature stability has the characteristic of metal strength height, good toughness again, therefore, and ladle long service life, intensity height, ladle handling, easy to operate, safe and reliable.
Water pipeline can insert the water-cooled tube in big electric current water-cooled switch 18 outsides by suspension basket.
When carrying out refining operation, ladle is hung on the buggy ladle, ladle bottom is pressed onto and clamps dop 14 bottoms, gudgeon 19 falls into buggy ladle support 21 but is not pressed on the buggy ladle support 21, the gravity of ladle self makes two to clamp dops 14 by rotating shaft 20 rotations, and the clamping surface that clamps dop 14 is clamped to the metal part of anode conducting piece 16 outer ends at the bottom of two sides of ladle together with electric current water-cooled switch 18 greatly; Under the effect of elevator, Graphite Electrodes 11 enters in the ladle by ladle clad hole, and rectifier power source 3 is converted into direct current with alternating-current, and gives Graphite Electrodes 11 and end anode supply, and the water-cooled tube of simultaneously big electric current water-cooled switch feeds cold water; The termination and the air between the molten steel of Graphite Electrodes 11 are breakdown, produce high-temperature electric arc, thereby the molten steel in the ladle is heated.
When refining is finished, under the effect of elevator, Graphite Electrodes 11 leaves in ladle, ladle is sling from buggy ladle, utilize the skew of gripping unit center of gravity, clamp dop 14 and open automatically, big electric current water-cooled switch 18 separates with anode conducting piece 16 at the bottom of the side thereupon, power supply is cut off, and gets ready for next ladle is in place.
Equipment reaches following effect through the The field in 2 years:
1, graphite electrode consumption decrease. Graphite electrode consumption only is three-phase alternating current ladle furnace and common DC ladle furnace About 1/3～1/4.
2, noise is littler, and arc length is short, and submerged arc is good, and programming rate is fast. Making in the situation of foamed slag, heating current is very flat Surely; Noise is littler, and arc length is short, and submerged arc is good; The heat temperature raising speed, DC voltage be 78.1V, heating current be 4.1～5.8KA the time, maximum programming rate can reach 6.2 ℃/min.
3, molten steel recarburization is little, is fit to add heat refining low-carbon (LC) and ultra-low-carbon steel. Refining X80 pipe line steel is through the heating of 45min It only is 0.0139% that refining, molten steel increase [C].
4, ladle lining consumes low. Find that through the variation of observing cylinder-packing after 9 refinings test the cylinder-packing erosive velocity very Slowly, no matter still contain the molten steel position from slag line, do not find significantly to corrode the groove mark phenomenon. Refractory consumption rate only is ordinary steel About 1/3～1/4 of bag stove.
5, thermal efficiency height is saved energy. Because heating voltage is low, only is 74V～90V, arc length is short, and submerged arc is good, thermal loss Few, thermal efficiency height; Utilize the gravity of ladle so that the buggy ladle dop snaps at the bottom of two sides of ladle on the anode automatically, need not other confession Electricity is saved energy.
Claims (7)
1, a kind of bottom anode side conductive direct current ladle furnace comprises buggy ladle part and ladle part, it is characterized in that ladle body bottom sides be provided with two sides at the bottom of the anode conducting piece as end anode.
2, a kind of bottom anode side conductive direct current ladle furnace according to claim 1, it is characterized in that buggy ladle partly is provided with anode automatic clamping device at the bottom of the side, the anode automatic clamping device has two symmetric clamping dops at the bottom of the side, two bottoms that clamp dop are passed with rotating shaft, the two ends of rotating shaft are fixed on two clamping dop supports of buggy ladle, all be connected with big electric current water-cooled switch on the clamping surface of each clamping dop, the big electric current water-cooled switch outside has water-cooled tube, one end of switch is connected with the rectifier power source output terminal, and the other end is connected with the clamping surface of two side anode dops of buggy ladle.
3, a kind of bottom anode side conductive direct current ladle furnace according to claim 1, it is characterized in that ladle body bottom sides be arranged with two sides at the bottom of the anode conducting piece as end anode, the anode conducting piece is inserted into the ladle body interior at the bottom of the side, is connected with ladle body bottom sides at the ladle outer wall.
4, a kind of bottom anode side conductive direct current ladle furnace according to claim 1, it is characterized in that the bottom anode side conductive direct current ladle furnace electrically conducting manner is: ladle furnace top is a graphite negative electrode, anode at the bottom of two sides of symmetric arrangement on the ladle body of heater, adopt the power supply of direct current counter electrode, two electric currents in bottom are aggregated on the graphite cathode on ladle top through ladle sidewall symmetry, form symmetric stirring magnetic field.
5, a kind of bottom anode side conductive direct current ladle furnace according to claim 1, it is characterized in that the material of anode conducting piece is the composite structure of metal part and non-metallic part at the bottom of the side, non-metallic part is embedded in the groove of metal part, and insertion ladle body interior, the metal of anode conducting piece part and ladle outer wall is connected at the bottom of the side, do not contact the molten steel in the ladle, anode conducting piece metal part is detachable with the mode of connection of ladle outer wall at the bottom of the side.
6, a kind of bottom anode side conductive direct current ladle furnace according to claim 5, it is characterized in that the metal part of anode conducting piece is divided into austenitic stainless steel at the bottom of the side, the material of non-metallic part is graphitiferous 6～20% by weight percentage, contain magnesium oxide 50～75%, trioxygen-containingization two aluminium 5～44%.
7, a kind of bottom anode side conductive direct current ladle furnace according to claim 1 is characterized in that when ladle hangs on the buggy ladle, utilizes the gravity of ladle self to make two to clamp at the bottom of the side that dops are clamped to ladle voluntarily on the anode conducting piece; When ladle is hung away, utilize and to step up the skew at device center, make and step up dop and open automatically, for next ladle in place ready.
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| CN2008100125730A CN101323892B (en) | 2008-07-31 | 2008-07-31 | Bottom anode side conductive direct current ladle furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088219A (en) * | 2011-11-04 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Apparatus and method for degassing cast aluminum alloys |
| CN110408742A (en) * | 2019-08-30 | 2019-11-05 | 王平 | A kind of electrochemistry purifier and method of refining preparing ultra-clean steel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3817379C1 (en) * | 1988-05-18 | 1989-06-22 | Mannesmann Ag, 4000 Duesseldorf, De | |
| DE4240891C2 (en) * | 1992-12-04 | 1995-11-16 | Voest Alpine Ind Anlagen | DC arc furnace and method for operating it |
| CN1048141C (en) * | 1994-03-03 | 2000-01-05 | 冶金工业部钢铁研究总院 | Bottom electrode in DC arc furnace and its cooling method |
| CN2399691Y (en) * | 1999-11-22 | 2000-10-04 | 赵虎田 | Arc furnace for smelting high melting point substances |
| CN201265025Y (en) * | 2008-07-31 | 2009-07-01 | 东北大学 | Bottom anode side conductive direct current ladle furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088219A (en) * | 2011-11-04 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Apparatus and method for degassing cast aluminum alloys |
| CN103088219B (en) * | 2011-11-04 | 2014-11-12 | 通用汽车环球科技运作有限责任公司 | Apparatus and method for degassing cast aluminum alloys |
| CN110408742A (en) * | 2019-08-30 | 2019-11-05 | 王平 | A kind of electrochemistry purifier and method of refining preparing ultra-clean steel |
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| CN101323892B (en) | 2010-06-09 |
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