CN117778663A - Bottom electrode direct current ladle furnace with rotatable furnace cover and conductive cross arm - Google Patents
Bottom electrode direct current ladle furnace with rotatable furnace cover and conductive cross arm Download PDFInfo
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- CN117778663A CN117778663A CN202311709387.3A CN202311709387A CN117778663A CN 117778663 A CN117778663 A CN 117778663A CN 202311709387 A CN202311709387 A CN 202311709387A CN 117778663 A CN117778663 A CN 117778663A
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- 238000009847 ladle furnace Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 239000010949 copper Substances 0.000 claims description 31
- 239000011449 brick Substances 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 238000010891 electric arc Methods 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000003756 stirring Methods 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000007670 refining Methods 0.000 description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000007547 defect Effects 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
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a bottom electrode direct current ladle furnace with a rotatable furnace cover and a cross arm, which comprises a ladle seat frame for erecting a ladle; an anode system is constructed at the bottom of the ladle, and a cathode system is constructed at the top of the ladle; the anode system is connected with an anode outlet end of the direct current power supply through an anode connecting structure, and the cathode system is connected with a cathode outlet end of the direct current power supply through a cathode connecting structure; the cathode and the anode generate electric arcs by penetrating and discharging air between the two electrodes, and the electric arcs heat molten steel in the ladle through heat transfer; a furnace cover and a cross arm rotating device are arranged at the side of the ladle, and the furnace cover and the cross arm rotating device comprise a rotating mechanism, a furnace cover jacking mechanism and an electrode lifting mechanism; the furnace cover jacking mechanism is connected with the water-cooled furnace cover; the top of the electrode lifting mechanism is provided with a conductive cross arm. The invention fully reflects the advantages of the direct current ladle furnace, has strong heating and stirring functions and greatly reduces the noise output.
Description
Technical Field
The invention belongs to the technical field of ladle smelting equipment, and particularly relates to a bottom electrode direct current ladle furnace with a rotatable furnace cover and a conductive cross arm.
Background
Ladle refining furnaces are devices for refining molten steel discharged into a ladle after primary refining in an arc furnace or a converter. Ladle refining furnace function: 1) Providing electric energy through a transformer, and heating molten steel by a graphite electrode through high-temperature electric arc; 2) Adding a slag-forming material to prepare foam white slag; 3) Stirring molten steel by blowing argon from the bottom of a ladle in a reducing atmosphere to ensure that the components and the temperature of the molten steel are uniform and inclusions float upwards; other refining metallurgical processes, to obtain qualified molten steel meeting higher-grade requirements.
The ladle refining furnaces used at home and abroad at present are three-phase alternating current ladle furnaces, and the ladle refining furnaces are simple in equipment, relatively low in investment cost, flexible to operate and good in refining effect. Its disadvantages are: firstly, the consumption of refractory materials is high, three electrodes are arranged on a ladle mouth, and the high-temperature area is close to the ladle wall due to the fact that the polar circle is large, so that the erosion speed of the refractory materials on the upper part of the ladle wall is high; secondly, the consumption of the electrodes is fast, as three graphite electrodes are arranged on the ladle mouth, the alternating current arc generates partial arc combustion to cause electrode end cracking phenomenon due to the action of alternating current, and when the other three electrodes are heated and combusted, one electrode is subjected to heat radiation of the other two electrodes, and then is subjected to 'cathode spots' formed by electron emission, so that the electrode end temperature is low and other factors, and the electrode loss is accelerated; thirdly, the noise is big, and serious to the environmental pollution, because the unbalance of three-phase electrode and alternating current arc's instability, in the electrode heating refining process, the noise is especially big, has caused pollution etc..
In view of the shortcomings of the three-phase alternating current ladle refining ladle furnace, people develop the direct current ladle furnace in a dispute from the 90 th century. The currently applied direct current ladle furnace adopts three-electrode or double-electrode upper conduction, and adopts two forms of three-electrode and double-electrode upper conduction, wherein one electrode is a graphite electrode, and the other electrode is a cathode, and the other electrode is an anode. The electrodes of the direct current ladle furnaces are heated at the upper part of molten steel by arcing, so that the advantages of the direct current ladle furnaces (particularly the integral heating and stirring) are not fully reflected, and the defects of large equipment investment and the like exist, so that the direct current ladle furnaces cannot be widely adopted at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the bottom electrode direct current ladle furnace with the rotatable furnace cover and the conductive cross arm, which fully embodies the advantages of the direct current ladle furnace, has strong heating and stirring functions and greatly reduces the output of noise.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a bottom electrode direct current ladle furnace with a rotatable furnace cover and a cross arm comprises a ladle stand for erecting a ladle; the bottom of the ladle is provided with an anode system, and the top of the ladle is provided with a cathode system; the anode system is connected with an anode wire outlet end of the direct current power supply through an anode connecting structure, and the cathode system is connected with a cathode wire outlet end of the direct current power supply through a cathode connecting structure; when the direct current power supply discharges, current is formed between the cathode at the top of the ladle furnace and the anode at the bottom of the ladle furnace; when the direct current power supply discharges, current is formed between a cathode at the top of the ladle furnace and an anode at the bottom of the ladle furnace, and when the current passes through gas on the liquid surface of molten steel, strong collision is generated, instant spark is generated, so that an electric arc is formed, and the electric arc transfers heat to heat the molten steel in the ladle;
the side of the ladle is provided with a furnace cover and cross arm rotating device, and the furnace cover and cross arm rotating device comprises a rotating mechanism, and a furnace cover jacking mechanism and an electrode lifting mechanism which are respectively arranged on the rotating mechanism; the furnace cover jacking mechanism is connected with the water-cooled furnace cover; the top of the electrode lifting mechanism is transversely provided with a conductive cross arm, one end of the conductive cross arm is close to the cathode connecting structure, and the other end of the conductive cross arm extends to the upper part of the water-cooling furnace cover.
The ladle bottom is provided with the ladle conductive brick type bottom electrode structure, and the ladle conductive brick type bottom electrode structure comprises a conductive brick, a ladle bottom conductive copper plate, a bottom electrode flange, a movable conductive copper plate and a corrugated pipe compensation device which are sequentially connected from top to bottom.
The anode connecting structure comprises a second water-cooling compensator, a second copper tube group and a second water-cooling cable which are connected in sequence; one end of the second water-cooling compensator is connected with the anode outlet end of the direct-current power supply, and one end of the second water-cooling cable is connected with the corrugated pipe compensation device.
According to the bottom electrode direct current ladle furnace with the rotatable furnace cover and the conductive cross arm, the second water-cooling compensator, the second copper tube group, the second water-cooling cable, the corrugated tube compensation device, the movable conductive copper plate, the bottom electrode flange, the movable conductive copper plate, the conductive bricks and molten steel in the ladle jointly form an anode system.
According to the direct-current ladle furnace with the rotatable furnace cover and the bottom electrode of the conductive cross arm, the graphite electrode with one end extending out of the upper part of the water-cooling furnace cover and connected with the conductive cross arm is inserted into the ladle.
The cathode connecting structure comprises a first water-cooling cable, a first copper tube group and a first water-cooling compensator which are connected in sequence; one end of the first water-cooling cable is connected with the conductive cross arm, and one end of the first water-cooling compensator is connected with a cathode outlet end of the direct-current power supply.
According to the bottom electrode direct current ladle furnace with the rotatable furnace cover and the conductive cross arm, the first water-cooling compensator, the first copper tube group, the first water-cooling cable, the conductive cross arm and the graphite electrode jointly form a cathode system.
The rotating mechanism comprises a rotating table, a rotating cylinder arranged on the rotating table and a rotating bracket which is arranged on one side of the rotating table and connected with the rotating cylinder through a bent arm.
The electrode lifting mechanism comprises an electrode lifting cylinder fixedly arranged in the rotary support, an electrode lifting upright post connected with the electrode lifting cylinder, and two groups of electrode lifting guide wheel groups respectively arranged at the middle end and the top end of the rotary support;
the lower end of the electrode lifting upright post is connected with a lifting rod of the electrode lifting oil cylinder, the upper end of the electrode lifting upright post sequentially passes through two groups of electrode lifting guide wheel groups at the middle end and the top end of the rotating bracket and extends to the upper part of the rotating bracket, and a cross arm mounting table for mounting a conductive cross arm is further arranged at the top of the electrode lifting upright post.
The furnace cover jacking mechanism comprises a furnace cover lifting cylinder fixedly arranged beside the electrode lifting cylinder, a furnace cover lifting upright post connected with the furnace cover lifting cylinder, and two groups of furnace cover lifting guide wheel groups respectively arranged at the middle end and the lower end of the rotating bracket;
the lower end of the furnace cover lifting upright post is connected with a lifting rod of the furnace cover lifting oil cylinder, the upper end of the furnace cover lifting upright post sequentially passes through two groups of furnace cover lifting guide wheel groups at the lower end and the middle end of the rotating support and stretches out of the upper part of the rotating support, the upper end of the furnace cover lifting guide wheel group is also connected with a furnace cover lifting part stretching to the water-cooling furnace cover, and the furnace cover lifting part is connected with the water-cooling furnace cover through a furnace cover lifting connecting piece.
The invention has the technical effects and advantages that:
1. according to the bottom electrode direct current ladle furnace with the rotatable furnace cover and the conductive cross arm, the cathode system is built above the direct current ladle furnace, the anode system is built at the bottom of the direct current ladle furnace, current is formed between the cathode at the top of the ladle furnace and the anode at the bottom of the ladle furnace, strong collision is generated when the current passes through gas on the liquid surface of molten steel, instant spark is generated, an electric arc is formed, the temperature of a high-temperature area in the center of the electric arc is up to 5000-6000 ℃, and therefore molten steel in the ladle is heated through heat transfer of the electric arc, and the heating efficiency of the molten steel is greatly improved; and because the electric arc is a gas discharge phenomenon, the heating mode can partially replace the stirring function of argon, so that the stirring efficiency is greatly improved.
2. According to the bottom electrode direct current ladle furnace with the rotatable furnace cover and the conductive cross arm, the water-cooled furnace cover and the conductive cross arm can be rotated to open before a ladle is hoisted into/lifted out of a ladle seat frame by a crane through the furnace cover and the cross arm rotating device, so that a space for hoisting the ladle by the crane can be conveniently reserved, and the ladle is hoisted conveniently and rapidly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a ladle conductive brick type bottom electrode structure of the present invention;
FIG. 3 is a schematic view of the electrode lifting mechanism of the present invention;
fig. 4 is a schematic structural view of the furnace lid jack mechanism of the present invention.
Reference numerals in the drawings: 1. a first water-cooled compensator; 2. a first copper tube group; 3. a first water-cooled cable; 4. a conductive cross arm; 5. a graphite electrode; 6. a second water-cooled compensator; 7. a second copper tube group; 8. a second water-cooled cable; 9. a bellows compensation device; 10. moving the conductive copper plate; 11. moving the conductive copper plate; 12. a conductive brick; 13. molten steel; 14. a bottom electrode flange; 18. ladle; 19. a ladle stand; 20. a water-cooled furnace cover; 21. a furnace cover jacking mechanism; 211. lifting the oil cylinder of the furnace cover; 212. lifting the upright post by the furnace cover; 213. a furnace cover lifting part; 214. a furnace cover lifting guide wheel set; 22. a ladle conductive brick type bottom electrode structure; 23. an electrode lifting mechanism; 231. an electrode lifting cylinder; 232. an electrode lifting column; 233. a cross arm mounting table; 234. electrode lifting guide wheel set; 24. a rotary cylinder; 241. a rotation mechanism; 242. a rotating bracket; 243. a rotary table; 25. a slag layer; 26. and (3) arc.
Detailed Description
The invention is described in further detail below with reference to examples given in the accompanying drawings.
The application provides a bottom electrode direct current ladle furnace with a rotatable furnace cover and a cross arm, which is used for solving the problem that the direct current ladle furnace which is applied at present adopts a three-electrode or double-electrode upper conductive mode, and electrodes are all heated at the upper part of molten steel by arcing, so that the advantages of the direct current ladle furnace can not be fully reflected. Therefore, the anode system is built at the bottom of the ladle 18, the cathode system is built at the top of the ladle 18, the anode system is connected with the anode outlet end of the direct current power supply through the anode connecting structure, and the cathode system is connected with the cathode outlet end of the direct current power supply through the cathode connecting structure; when the direct current power supply discharges, current is formed between the cathode at the top of the ladle furnace and the anode at the bottom of the ladle furnace, and when the current passes through gas on the liquid surface of molten steel, strong collision is generated, and instant spark is generated, so that an electric arc is formed, and the electric arc transfers heat to heat the molten steel in the ladle.
The arc current and the arc length can be controlled and regulated automatically by the control rectifier transformer of the computer lifting regulating system. Referring to fig. 2, in order to improve the heat efficiency and the quality of molten steel, the slag 25 should completely embed the arc 26 when the slag-forming material is added to form the slag.
In the embodiment, the cathode system is constructed above the direct-current ladle furnace, the anode system is constructed at the bottom of the direct-current ladle furnace, electric current is formed between the cathode at the top of the ladle furnace and the anode at the bottom of the ladle furnace, strong collision is generated between the electric current and gas when the electric current passes through the gas in the molten steel, instant spark is generated, an electric arc is formed, the temperature of a high-temperature area of the center of the electric arc is as high as 5000-6000 ℃, so that the molten steel in the ladle is heated through electric arc heat transfer, the heating efficiency of the molten steel is greatly improved, the electric arc is a gas discharge phenomenon, and the stirring function of argon can be partially replaced by the electric arc in the heating mode, so that the stirring efficiency is greatly improved.
Referring to fig. 1 and 2, a ladle holder 19 for mounting the ladle 18 is provided at the bottom of the ladle 18; a furnace cover and a cross arm rotating device are arranged beside the ladle 18.
The furnace cover and cross arm rotating device comprises a rotating mechanism 24, and a furnace cover jacking mechanism 21 and an electrode lifting mechanism 23 which are respectively arranged on the rotating mechanism 24; the furnace cover jacking mechanism 21 is connected with the water-cooled furnace cover 20; the top of the electrode lifting mechanism 23 is transversely provided with a conductive cross arm 4, one end of the conductive cross arm 4 is close to the cathode connecting structure, and the other end of the conductive cross arm extends to the upper part of the water-cooling furnace cover 20.
In this embodiment, the water-cooled furnace cover 20 and the conductive cross arm 4 can be rotated to open before the ladle is hoisted into/lifted from the ladle holder 19 by the crane through the furnace cover and the cross arm rotating device, so that the space for hoisting the ladle by the crane can be conveniently reserved, and the ladle is hoisted conveniently and rapidly.
In the concrete implementation, referring to fig. 1 and 2, a graphite electrode 5 with one end extending above a water-cooled furnace cover 20 and connected with a conductive cross arm 4 is inserted into the ladle 18. The upper end of the graphite electrode 5 is connected with the conductive cross arm 4, and the lower end is inserted into molten steel 13 in a ladle 18 to be used as a cathode conductive component.
In specific implementation, referring to fig. 1, the cathode connection structure includes a first water-cooled cable 3, a first copper tube set 2 and a first water-cooled compensator 1, which are sequentially connected; one end of the first water-cooling cable 3 is connected with the conductive cross arm 4, and one end of the first water-cooling compensator 1 is connected with a cathode outlet end of the direct-current power supply.
Specifically, in this embodiment, the first water-cooled compensator 1, the first copper tube group 2, the first water-cooled cable 3, the conductive cross arm 4 and the graphite electrode 5 together form a cathode system.
In specific implementation, referring to fig. 1 and 2, a ladle conductive brick type bottom electrode structure 22 is arranged at the bottom of the ladle 18, and the ladle conductive brick type bottom electrode structure 22 comprises a conductive brick 12, a ladle bottom conductive copper plate 11, a bottom electrode flange 14, a movable conductive copper plate 10 and a corrugated pipe compensation device 9 which are sequentially connected from top to bottom. And a metal material with good electric conduction property is arranged in the corrugated pipe compensation device 9, the lower end of the corrugated pipe compensation device is connected with the second water-cooling cable 8, and the upper end of the corrugated pipe compensation device is connected with the movable conductive copper plate 10.
Specifically, when the ladle 18 is placed on the ladle holder 19 at the heating position by using the travelling crane, the movable conductive copper plate 10 is tightly propped against the ladle bottom conductive copper plate 11 by means of the upward pushing force of the corrugated pipe compensation device 9, so that reliable conductive surface contact is ensured, and high-current transmission is satisfied.
In specific implementation, referring to fig. 1, the anode connection structure includes a second water-cooled compensator 6, a second copper tube set 7 and a second water-cooled cable 8 which are sequentially connected; one end of the second water-cooling compensator 6 is connected with the anode outlet end of the direct-current power supply, and one end of the second water-cooling cable 8 is connected with the corrugated pipe compensation device 9.
Specifically, in this embodiment, the second water-cooling compensator 6, the second copper tube set 7, the second water-cooling cable 8, the bellows compensation device 9, the movable conductive copper plate 10, the bottom electrode flange 14, the movable conductive copper plate 11, the conductive brick 12 and the molten steel 13 in the ladle together form an anode system.
Preferably, the bottom electrode flange 14 is a detachable flange, the conductive brick 12 is composed of magnesia carbon bricks, graphite powder and the like, and the carbon content of the magnesia carbon bricks is not less than 15%. When the thickness of the furnace bottom refractory bricks and the magnesia carbon conductive bricks is reduced to a certain size, the new magnesia carbon conductive bricks are needed to be replaced together with the furnace bottom refractory bricks, and the brick joints of the conductive areas of the bottom electrodes are filled with graphite powder.
In particular, referring to fig. 1, the rotating mechanism 24 includes a rotary table 243, a rotary cylinder 241 disposed on the rotary table 243, and a rotary bracket 242 disposed on one side of the rotary table 243 and connected to the rotary cylinder 241 by a bent arm.
In particular, referring to fig. 3, the electrode lifting mechanism 23 includes an electrode lifting cylinder 231 fixedly disposed in a rotating bracket 242, an electrode lifting column 232 connected to the electrode lifting cylinder 231, and two sets of electrode lifting guide wheel sets 234 respectively disposed at the middle end and the top end of the rotating bracket 242; the lower end of the electrode lifting upright post 232 is connected with a lifting rod of the electrode lifting cylinder 231, the upper end sequentially passes through two groups of electrode lifting guide wheel groups 234 at the middle end and the top end of the rotating bracket 242, and extends to the upper part of the rotating bracket 242, and a cross arm mounting table 233 for mounting the conductive cross arm 4 is further arranged at the top of the rotating bracket.
In specific implementation, referring to fig. 4, the furnace cover lifting mechanism 21 includes a furnace cover lifting cylinder 211 fixedly disposed beside the electrode lifting cylinder 231, a furnace cover lifting column 212 connected to the furnace cover lifting cylinder 211, and two sets of furnace cover lifting guide wheel sets 214 respectively disposed at the middle and lower ends of the rotating support 242; the lower end of the furnace cover lifting upright post 212 is connected with a lifting rod of the furnace cover lifting oil cylinder 211, the upper end sequentially passes through two groups of furnace cover lifting guide wheel groups 214 at the lower end and the middle end of the rotating support 242, and extends out of the upper part of the rotating support 242, the upper end of the furnace cover lifting upright post is also connected with a furnace cover lifting part 213 extending to the water-cooled furnace cover 20, and the furnace cover lifting part 213 is connected with the water-cooled furnace cover 20 through a furnace cover lifting connecting piece.
In practical implementation, before the ladle 18 is lifted into/out of the ladle holder 19 at the heating position by the crane, the water-cooled furnace cover 20 and the conductive cross arm 4 are required to be rotated to open, so that a space for the crane to hoist the ladle 18 is reserved. The rotation steps are as follows: firstly, the electrode lifting control system controls the electrode lifting mechanism 23 to lift the conductive cross arm 4 to a certain height, then the furnace cover lifting control system controls the furnace cover lifting mechanism 21 to lift the water-cooled furnace cover 20 to a certain height, finally, the rotary control system controls the rotary oil cylinder of the rotary mechanism 24 to act to drive the rotary support 242 to rotate, and the rotary support 242 drives the electrode lifting mechanism 23 and the furnace cover lifting mechanism 21 to rotate before, so that the water-cooled furnace cover 20 and the conductive cross arm are rotated.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. The utility model provides a bottom electrode direct current ladle stove of rotatable bell and xarm which characterized in that: comprises a ladle stand (19) for erecting a ladle (18); an anode system is constructed at the bottom of the ladle (18), and a cathode system is constructed at the top of the ladle; the anode system is connected with an anode wire outlet end of the direct current power supply through an anode connecting structure, and the cathode system is connected with a cathode wire outlet end of the direct current power supply through a cathode connecting structure; when the direct current power supply discharges, current is formed between a cathode at the top of the ladle furnace and an anode at the bottom of the ladle furnace, and when the current passes through gas on the liquid surface of molten steel, strong collision is generated, instant spark is generated, so that an electric arc is formed, and the electric arc transfers heat to heat the molten steel in the ladle;
a furnace cover and cross arm rotating device is arranged beside the steel ladle (18), and comprises a rotating mechanism (24), and a furnace cover jacking mechanism (21) and an electrode lifting mechanism (23) which are respectively arranged on the rotating mechanism (24); the furnace cover jacking mechanism (21) is connected with the water-cooled furnace cover (20); the top of the electrode lifting mechanism (23) is transversely provided with a conductive cross arm (4), one end of the conductive cross arm (4) is close to the cathode connecting structure, and the other end of the conductive cross arm extends to the upper part of the water-cooling furnace cover (20).
2. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 1, wherein: the ladle bottom of ladle (18) is equipped with ladle conductive brick formula bottom electrode structure (22), ladle conductive brick formula bottom electrode structure (22) are including conductive brick (12), ladle bottom conductive copper plate (11), bottom electrode flange (14), removal conductive copper plate (10) and bellows compensation arrangement (9) that from the top down connects gradually.
3. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 2, wherein: the anode connecting structure comprises a second water-cooling compensator (6), a second copper tube group (7) and a second water-cooling cable (8) which are connected in sequence; one end of the second water-cooling compensator (6) is connected with the anode outlet end of the direct-current power supply, and one end of the second water-cooling cable (8) is connected with the corrugated pipe compensation device (9).
4. A bottom electrode dc ladle furnace having a rotatable furnace cover and conductive cross arm as recited in claim 3 wherein: the second water-cooling compensator (6), the second copper tube group (7), the second water-cooling cable (8), the corrugated tube compensation device (9), the movable conductive copper plate (10), the bottom electrode flange (14), the movable conductive copper plate (11), the conductive brick (12) and molten steel (13) in the ladle jointly form an anode system.
5. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 1, wherein: and a graphite electrode (5) with one end extending out of the upper part of the water-cooled furnace cover (20) and connected with the conductive cross arm (4) is inserted into the ladle (18).
6. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 5, wherein: the cathode connecting structure comprises a first water-cooling cable (3), a first copper tube group (2) and a first water-cooling compensator (1) which are connected in sequence; one end of the first water-cooling cable (3) is connected with the conductive cross arm (4), and one end of the first water-cooling compensator (1) is connected with a cathode outlet end of the direct-current power supply.
7. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 6, wherein: the first water-cooling compensator (1), the first copper tube group (2), the first water-cooling cable (3), the conductive cross arm (4) and the graphite electrode (5) jointly form a cathode system.
8. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 1, wherein: the rotating mechanism (24) comprises a rotating table (243), a rotating oil cylinder (241) arranged on the rotating table (243), and a rotating bracket (242) which is positioned on one side of the rotating table (243) and is connected with the rotating oil cylinder (241) through a bent arm.
9. The bottom electrode dc ladle furnace of claim 8 wherein the lid and conductive cross arm are rotatable, and wherein: the electrode lifting mechanism (23) comprises an electrode lifting cylinder (231) fixedly arranged in a rotary support (242), an electrode lifting upright post (232) connected with the electrode lifting cylinder (231), and two groups of electrode lifting guide wheel groups (234) respectively arranged at the middle end and the top end of the rotary support (242);
the lower end of the electrode lifting upright post (232) is connected with a lifting rod of the electrode lifting oil cylinder (231), the upper end of the electrode lifting upright post sequentially passes through two groups of electrode lifting guide wheel groups (234) at the middle end and the top end of the rotating support (242) and extends to the upper part of the rotating support (242), and a cross arm mounting table (233) for mounting the conductive cross arm (4) is further arranged at the top of the electrode lifting upright post.
10. The bottom electrode dc ladle furnace with rotatable furnace cover and conductive cross arm of claim 9, wherein: the furnace cover jacking mechanism (21) comprises a furnace cover lifting cylinder (211) fixedly arranged beside the electrode lifting cylinder (231), a furnace cover lifting column (212) connected with the furnace cover lifting cylinder (211), and two groups of furnace cover lifting guide wheel groups (214) respectively arranged at the middle end and the lower end of the rotating bracket (242);
the lower end of the furnace cover lifting upright post (212) is connected with a lifting rod of the furnace cover lifting oil cylinder (211), the upper end of the furnace cover lifting upright post sequentially passes through two groups of furnace cover lifting guide wheel sets (214) at the lower end and the middle end of the rotating support (242) and stretches out of the upper part of the rotating support (242), the upper end of the furnace cover lifting guide wheel sets is also connected with a furnace cover lifting part (213) stretching to the water-cooled furnace cover (20), and the furnace cover lifting part (213) is connected with the water-cooled furnace cover (20) through a furnace cover lifting connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311709387.3A CN117778663A (en) | 2023-12-13 | 2023-12-13 | Bottom electrode direct current ladle furnace with rotatable furnace cover and conductive cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311709387.3A CN117778663A (en) | 2023-12-13 | 2023-12-13 | Bottom electrode direct current ladle furnace with rotatable furnace cover and conductive cross arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117778663A true CN117778663A (en) | 2024-03-29 |
Family
ID=90393607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311709387.3A Pending CN117778663A (en) | 2023-12-13 | 2023-12-13 | Bottom electrode direct current ladle furnace with rotatable furnace cover and conductive cross arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117778663A (en) |
-
2023
- 2023-12-13 CN CN202311709387.3A patent/CN117778663A/en active Pending
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