CN115747419A

CN115747419A - Ultra-low carbon steel desulfurization converter with high utilization rate

Info

Publication number: CN115747419A
Application number: CN202211511080.8A
Authority: CN
Inventors: 孙木清
Original assignee: Jiangsu Quanda Machinery Technology Co ltd
Current assignee: Jiangsu Quanda Machinery Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-07
Anticipated expiration: 2042-11-29
Also published as: CN115747419B

Abstract

The utility model belongs to the technical field of the steelmaking technique and specifically relates to a super low carbon steel desulfurization converter of high utilization ratio is related to, and it includes the furnace body, be provided with feed inlet and discharge gate on the furnace body, still include the filter residue device, the filter residue device is including dragging for the slag plate, drag for the slag plate and pass through mounting panel and furnace body along the axial sliding connection of furnace body, it is articulated with the mounting panel through the linkage subassembly to drag for the slag plate, drag for to be provided with on the slag plate and strain the mouth of a river, this application has the effect that the reduction causes the wasting of resources at the slagging-off in-process to the molten iron.

Description

Ultra-low carbon steel desulfurization converter with high utilization rate

Technical Field

The application relates to the technical field of steel making, in particular to a high-utilization-rate ultra-low-carbon steel desulfurization converter.

Background

Except for individual special steel types, sulfur is a harmful element in steel, and FeS with a low melting point is easily generated, so that hot brittle cracks are generated in the steel in hot rolling and welding; sulfide inclusions are also easily formed in the steel, reducing the ductility and toughness, particularly impact toughness, of the steel. When the sulfur content is high, the HIC corrosion resistance is greatly reduced.

As the quality requirements of steel products are higher and higher, basically all high-grade steel grades need to be subjected to desulfurization pretreatment, the most common molten iron pretreatment methods are a magnesium injection desulfurization method and a KR desulfurization method, and in order to avoid resulfurization of molten iron after desulfurization, slagging-off treatment needs to be carried out after desulfurization is finished, and slag with high sulfur content is removed from the surface of molten iron. At present, the bright surface of slag skimming is generally required to be more than 80%, and in order to realize a good slag skimming effect, common molten iron is inevitably brought into desulfurized slag iron, so that resource waste is caused.

Disclosure of Invention

In order to reduce the resource waste of molten iron in the slag skimming process, the application provides the ultra-low carbon steel desulfurization converter with high utilization rate.

The application provides a high-utilization-rate ultra-low carbon steel desulfurization converter adopts the following technical scheme:

the utility model provides a super low carbon steel desulfurization converter of high utilization, includes the furnace body, be provided with feed inlet and discharge gate on the furnace body, still include the filter residue device, the filter residue device is including dragging for the slag plate, drag for the slag plate and pass through the mounting panel and the axial sliding connection of furnace body edge furnace body, it is articulated with the mounting panel through linkage assembly to drag for the slag plate, it is provided with the mouth of a river to drag for on the slag plate.

Through adopting above-mentioned technical scheme, with the molten iron with be used for the raw materials of desulfurization slagging-off to drop into the furnace body through the feed inlet in, rock the furnace body through the converter device, make raw materials and molten iron reaction, will drag for the slag plate through lifting unit from the bottom of furnace body along the axial displacement of furnace body, drag for the slag, then rotate towards the inside wall of furnace body and drag for the slag plate, make the slag deposit to drag for between slag plate and the furnace body inside wall, the molten iron in the slag is leached through filtering the mouth of a river, thereby it causes the wasting of resources to the molten iron to have reduced taking off the sediment in-process.

Optionally, the lifting unit includes fixed pulley, movable pulley, halyard and is used for pulling the driving source of halyard, the fixed pulley rotates to be connected on the position of keeping away from the furnace body bottom on the inside wall of furnace body, the movable pulley rotates to be connected on the mounting panel, the one end fixed connection of halyard is on the fixed pulley, and the other end is walked around movable pulley and fixed pulley in proper order and is connected with the driving source.

Through adopting above-mentioned technical scheme, through the driving source pulling halyard, the halyard drives movable pulley and mounting panel and moves along the axial of furnace body and keep away from the furnace body bottom to be convenient for realize the removal of mounting panel and drag for the sediment board.

Optionally, be provided with the opening on the mounting panel, be provided with the spout on the lateral wall of opening, the length direction perpendicular to furnace body's of spout axial, there is the slider through spout sliding connection on the mounting panel, be connected with first elastic component between the lateral wall that slider and spout are close to the furnace body axle center, the one end of dragging for the sediment board is inserted and is established in the opening, it is connected with articulated shaft and sliding shaft on the sediment board to drag for, the sliding shaft sets up the one side of keeping away from the furnace body axle center at the articulated shaft, the tip and the slider of articulated shaft are articulated, the cover is equipped with the torsional spring on the articulated shaft, the sliding shaft be located the spout and with spout sliding fit, the spout is provided with the arc wall on being close to the lateral wall of furnace body bottom, sliding shaft and arc wall sliding fit.

Through adopting above-mentioned technical scheme, promote and drag for the sediment board for the pressure spring is compressed, and sliding shaft and slider, articulated shaft move towards the furnace body axle center, and the sliding shaft moves to the position relative with the arc wall, and under the effect of torsional spring, the sliding shaft slides along the arc wall, thereby realizes dragging for the rotation of sediment board.

Optionally, the linkage assembly comprises a connecting block, a supporting plate and a push plate, the connecting block is connected to the mounting plate through a dovetail groove in an axial sliding manner along the furnace body, the through hole is arranged on the connecting block, the slag dragging plate penetrates through the through hole, a first slide hole is arranged on the side wall of the dovetail groove far away from the bottom of the furnace body, the axial direction of the first slide hole is arranged along the axial direction of the furnace body, the supporting plate is connected to the bottom of the first slide hole through a pressure spring, a second slide hole is arranged on the mounting plate far away from the bottom of the furnace body, the second slide hole is positioned on one side of the slide groove far away from the axis of the furnace body and communicated with the slide groove, the axial direction of the second slide hole is perpendicular to the axis of the furnace body, the push plate is connected to the mounting plate through the second slide hole in an axial sliding manner perpendicular to the furnace body, be provided with the installation cavity on the mounting panel, first slide opening, second slide opening all communicate with the installation cavity, be connected with the second elastic component between the lateral wall that the second slide opening was kept away from to the push pedal and the lateral wall of installation cavity, the elasticity of second elastic component is stronger than first elastic component, the cross-section of push pedal sets up to the U-shaped, be provided with the through-hole on the offset plate, an extension board of push pedal run through the through-hole and with through-hole sliding fit, another extension board be located the second slide opening and with second slide opening sliding fit, work as when the lateral wall butt of furnace body bottom is kept away from to connecting block and dovetail, the through-hole is relative with an extension board of push pedal, the second slide opening with the opening is relative.

Through adopting above-mentioned technical scheme, along dovetail removal connecting block, the connecting block with support the board butt, the pressure spring is compressed, and the through-hole is relative with the push pedal, and the push pedal moves towards the furnace body axle center under the effect of second elastic component to the push pedal promotes drags for the sediment board and removes.

Optionally, the linkage subassembly still includes pivot and cable, pivot coaxial coupling is on the movable pulley, the cable is around establishing in the pivot, the one end and the pivot fixed connection of cable, the other end is through walking around the position of connecting block and fixed connection keeping away from the furnace body bottom on the mounting panel lateral wall.

Through adopting above-mentioned technical scheme, when the movable pulley rotated under the drive of lift lock, the movable pulley drove the pivot and rotated, and the cable was rotated to when the mounting panel drove to drag for the slag plate and removes along the furnace body axis, drag for the slag plate and rotate towards the furnace body internal side wall, realize dragging for the slag plate and go on along furnace body axial displacement and commentaries on classics synchronous of board.

Optionally, a slag throwing port is arranged on the side wall of the furnace body, the slag throwing port is far away from one side of the bottom of the furnace body, and a cover plate for covering the slag throwing port is hinged to the outer side wall of the furnace body.

Through adopting above-mentioned technical scheme, will drag for the sediment board and remove to throwing the relative position of cinder notch, the slag is pressed from both sides between apron and the sediment board of dragging for, behind the molten iron filtering in the slag, opens the apron, and the slag is followed and is thrown the cinder notch and discharge.

Optionally, the top of the furnace body is connected with a first stirring shaft and a driving machine for driving the first stirring shaft to rotate, the first stirring shaft is arranged in a hollow mode, the top of the furnace body is connected with an air pump box for inputting inert gas to the first stirring shaft, and the air pump box is connected with the first stirring shaft.

Through adopting above-mentioned technical scheme, rotate first (mixing) shaft to with in inert gas input molten iron, thereby improved the stirring effect to molten iron.

Optionally, the side wall of one end of the first stirring shaft in the furnace body is connected with a rotating plate, the rotating plate is hinged with a second stirring shaft, the second stirring shaft is arranged in a hollow mode, the side wall of the second stirring shaft is connected with a guide block in a rotating mode, the guide block and the first stirring shaft are matched in an axial sliding mode along the first stirring shaft, a transmission pipe is connected between the first stirring shaft and the second stirring shaft, and the transmission pipe is a high-temperature-resistant hose.

Through adopting above-mentioned technical scheme, starter motor, the motor drives the one end of second (mixing) shaft and rotates along its axle center as the center along the commentaries on classics board, and the guide block is along the axial displacement of first (mixing) shaft to when first (mixing) shaft axle center rotates as the center together, second (mixing) shaft is at vertical in-plane rotation in the molten iron, thereby has improved the stirring effect to the molten iron, has improved the reaction effect between raw materials and the molten iron.

In summary, the present application includes at least one of the following beneficial technical effects:

1. molten iron and raw materials for desulfurization and slagging are put into a furnace body through a feeding hole, the furnace body is shaken through a converter device to enable the raw materials to react with the molten iron, a slag scooping plate moves from the bottom of the furnace body along the axial direction of the furnace body through a lifting assembly, slag is scooped up, then the slag scooping plate rotates towards the inner side wall of the furnace body, the slag is stored between the slag scooping plate and the inner side wall of the furnace body, the molten iron in the slag is drained through a filtering water gap, and therefore resource waste of the molten iron in the slag scooping process is reduced;

2. when the movable pulley is driven by the lifting lock to rotate, the movable pulley drives the rotating shaft to rotate, and the stay cable is wound, so that when the mounting plate drives the slag salvaging plate to move along the axis of the furnace body, the slag salvaging plate rotates towards the inner side wall of the furnace body, and the slag salvaging plate moves along the axial direction of the furnace body and synchronously rotates with the rotating plate;

3. the motor is started, one end of the second stirring shaft driven by the motor rotates along the axis of the rotating plate as the center, and the guide block moves along the axial direction of the first stirring shaft, so that when the first stirring shaft rotates along with the axis as the center, the second stirring shaft rotates in a vertical plane in molten iron, the stirring effect on the molten iron is improved, and the reaction effect between raw materials and the molten iron is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a high-utilization ultra-low carbon steel desulfurization converter;

FIG. 2 is a schematic view for showing a positional relationship between the first stirring shaft and the slag salvaging plate;

FIG. 3 is a schematic diagram for showing the positional relationship between the connecting block and the slag salvaging plate;

FIG. 4 is an enlarged view of the portion A for showing the positional relationship between the connecting block and the connecting rod in FIG. 3;

fig. 5 is an enlarged view of a portion B for showing the positional relationship between the push plate and the abutting plate in fig. 2.

Description of the reference numerals:

1. a furnace body; 2. fishing out the slag plate; 3. a fixed shaft; 4. a fixed pulley; 5. a movable pulley; 6. a halyard; 7. filtering a water gap; 8. mounting a plate; 9. a rotating shaft; 10. a speed reducer; 11. a dovetail groove; 12. connecting blocks; 13. a chute; 14. a port; 15. a slider; 16. hinging a shaft; 17. a sliding shaft; 18. an avoidance groove; 19. an arc-shaped slot; 20. a resisting block; 21. a first elastic member; 22. a ring groove; 23. a cable; 24. a first slide hole; 25. a second slide hole; 26. a pressure spring; 27. a resisting plate; 28. pushing the plate; 29. a through hole; 30. a slag feeding port; 31. a cover plate; 32. a cylinder; 33. unlocking the rope; 34. a first stirring shaft; 35. a driver; 36. a drive gear; 37. a follower gear; 38. an air pump box; 39. rotating the plate; 40. a motor; 41. a second stirring shaft; 42. a guide block; 43. a guide groove; 44. a conveying pipe; 45. spraying a plate; 46. a second elastic member; 47. a connecting rod; 48. and (7) installing a cavity.

Detailed Description

The embodiment of the application discloses a high-utilization-rate ultra-low-carbon steel desulfurization converter.

Referring to fig. 1, a high-utilization-rate ultra-low-carbon steel desulfurization converter comprises a furnace body 1, wherein at least two filter residue devices are connected in the furnace body 1, the number of the filter residue devices is two in the embodiment, and the filter residue devices are circumferentially arranged on the inner side wall of the furnace body 1 by taking the axis of the furnace body 1 as the axis.

Referring to fig. 1 and 2, the residue filtering device comprises a residue fishing plate 2 and a lifting assembly, the lifting assembly comprises a fixed shaft 3, a fixed pulley 4, a movable pulley 5, a lifting cable 6 and a driving source for pulling the lifting cable 6, and a plurality of water filtering ports 7 are arranged on the residue fishing plate 2.

Referring to fig. 2, fixed axle 3 fixed connection keeps away from on the position of furnace body 1 bottom on the inside wall of furnace body 1, fixed pulley 4 rotates with fixed axle 3 to be connected, there is a mounting panel 8 that is used for the installation to drag for sediment board 2 along the axial sliding connection of furnace body 1 on the inside wall of furnace body 1, it is connected with pivot 9 to rotate on the mounting panel 8, the coaxial fixed connection of movable pulley 5 is on pivot 9, the driving source is speed reducer 10, speed reducer 10 connects on the position of keeping away from furnace body 1 bottom on the inside wall of furnace body 1, the one end fixed connection of halyard 6 is on fixed axle 3, the other end walks around movable pulley 5 and fixed pulley 4 in proper order and in the output shaft of speed reducer 10.

Referring to fig. 3 and 4, a dovetail groove 11 is axially arranged on the mounting plate 8 along the furnace body 1, a connecting block 12 is slidably connected to the mounting plate 8 through the dovetail groove 11, a cross section of the connecting block 12 is arranged in a dovetail shape, an opening 14 is formed in the connecting block 12, a connecting rod 47 is connected to the slag dragging plate 2, the connecting rod 47 penetrates through the opening 14, a cross section area of the opening 14 is larger than that of the connecting rod 47, a sliding groove 13 is formed in the side wall of the opening 14 and perpendicular to the length direction of the dovetail groove 11, a sliding block 15 is slidably connected to the sliding groove 13, a hinged shaft 16 and a sliding shaft 17 are connected to the side wall of the connecting rod 47, the sliding shaft 17 is arranged on one side, away from the axis of the furnace body 1, of the hinged shaft 16, the end of the hinged shaft 16 is hinged to the sliding block 15, a torsion spring is sleeved on the hinged shaft 16, one end of the torsion spring is connected to the sliding block 15, the other end of the torsion spring is connected to the sliding shaft 16, the sliding shaft 17 is located in the sliding groove 13 and slidably matched with the sliding groove 13, a supporting block 20 is connected to the side wall of the sliding groove 13 close to the hinged shaft 16 through a first elastic member 21, and the supporting block 20 is abutted to the sliding block 15. The side wall of the chute 13 close to the bottom of the furnace body 1 is provided with an arc-shaped groove 19, and the sliding shaft 17 is in sliding fit with the arc-shaped groove 19.

Referring to fig. 3 and 4, the connecting block 12 is provided with a ring groove 22, the axial direction of the ring groove 22 is consistent with the axial direction of the rotating shaft 9, the rotating shaft 9 is wound with a pulling cable 23, one end of the pulling cable 23 is fixedly connected with the rotating shaft 9, and the other end of the pulling cable passes through the ring groove 22, bypasses the connecting block 12 and is fixedly connected to the side wall of the mounting plate 8, is far away from the bottom of the furnace body 1, and is located between the rotating shaft 9 and the dovetail groove 11.

Referring to fig. 2 and 5, a first slide hole 24 is formed in a side wall of the dovetail groove 11 away from the bottom of the furnace body 1, the axial direction of the first slide hole 24 is arranged along the axial direction of the furnace body 1, the bottom of the first slide hole 24 is connected with a resisting plate 27 through a pressure spring 26, the cross section of the resisting plate 27 is T-shaped, the end with a larger end surface area of the resisting plate 27 is arranged toward the bottom of the furnace body 1, and the cross section of the first slide hole 24 is T-shaped; the bottom of the dovetail groove 11 is provided with a second sliding hole 25 at a position far away from the bottom of the furnace body 1, the axial direction of the second sliding hole 25 is perpendicular to the axis of the furnace body 1, the mounting plate 8 is provided with a mounting cavity 48, the first sliding hole 24 and the second sliding hole 25 are both communicated with the mounting cavity 48, a push plate 28 is connected in the mounting cavity 48 in a sliding manner perpendicular to the axial direction of the furnace body 1, a second elastic part 46 is connected between the side wall of the push plate 28 far away from the second sliding hole 25 and the side wall of the mounting cavity 48, the first elastic part 21 and the second elastic part 46 are both springs, the elasticity of the second elastic part 46 is stronger than that of the first elastic part 21, the cross section of the push plate 28 is arranged in a C shape, the through hole 29 is arranged on the abutting plate 27, one supporting plate of the push plate 28 penetrates through the through hole 29 and is in sliding fit with the through hole 29, and the other supporting plate is arranged in the second sliding hole 25 and is in sliding fit with the second sliding hole 25.

Referring to fig. 5, when the compression spring 26 is in a natural state, the end portion of the end of the pressing plate 27 having a larger area penetrates through the first slide hole 24, and the push plate 28 abuts on the side of the side wall upper opening 14 of the pressing plate 27, which is close to the compression spring 26.

Referring to fig. 1 and 2, a slag throwing port 30 is arranged on the side wall of the furnace body 1, the slag throwing port 30 is far away from one side of the bottom of the furnace body 1, a cover plate 31 for covering the slag throwing port 30 and an air cylinder 32 for pushing the cover plate 31 are hinged on the outer side wall of the furnace body 1, a piston rod of the air cylinder 32 is hinged with the cover plate 31, an unlocking rope 33 is connected on the push plate 28, and one end, far away from the push plate 28, of the unlocking rope 33 penetrates through the slag throwing port 30. Preferably, two movable pulleys 5, two fixed pulleys 4 and two fixed shafts 3 are arranged in each residue filtering device in the embodiment, and are positioned at two sides of the residue throwing port 30.

The speed reducer 10 is started, the lifting rope 6 is wound on an output shaft of the speed reducer 10 to pull the lifting rope 6, the lifting rope 6 drives the movable pulley 5 and the mounting plate 8 to move away from the bottom of the furnace body 1 along the axial direction of the furnace body 1, the rotating shaft 9 rotates under the pulling of the lifting lock, the pull rope 23 is wound, the pull rope 23 pulls the connecting block 12 to move along the axial direction of the furnace body 1, the connecting block 12 drives the slag scooping plate 2 to move away from the bottom of the furnace body 1, at the moment, under the pushing of the first elastic piece 21, the sliding block 15 and the sliding shaft 17 are positioned on two sides of the arc-shaped groove 19, when the connecting block 12 moves to the side wall of the dovetail groove 11 away from the bottom of the furnace body 1, the connecting block 12 is abutted against the abutting plate 27, the abutting plate 27 is abutted against the first sliding hole 24 by the connecting block 12, the pressure spring 26 is compressed, and the through hole 29 is opposite to the support plate of the push plate 28, another extension board and the connecting rod 47 of push pedal 28, opening 14 is relative, under the effect of second elastic component 46, the axial displacement of push pedal 28 perpendicular to furnace body 1, push pedal 28 runs through second slide opening 25 and drags for sediment board 2 butt, and promote and drag for sediment board 2, slider 15 removes along spout 13, first elastic component 21 is compressed, sliding shaft 17 removes to the position relative with arc 19, under the effect of torsional spring, sliding shaft 17 slides along arc 19, drag for sediment board 2 and rotate, make and drag for sediment board 2 and be in the state of keeping away from furnace body 1 slope, thereby drag for the slag from furnace body 1 bottom and make the slag save between sediment board 2 and apron 31, the molten iron leaches from drainage mouth 7, then open apron 31, the slag that will drop the molten iron is discharged furnace body 1 through throwing sediment mouth 30.

Pulling unlocking rope 33, unlocking rope 33 drives push pedal 28 and keeps away from connecting rod 47 and removes, the extension board of push pedal 28 breaks away from through-hole 29, sliding shaft 17 gets back to in spout 13 under the effect of torsional spring, support block 20 under the effect of first elastic component 21 and promote slider 15 and remove, the articulated shaft 16, sliding shaft 17 keeps away from 1 axle center of furnace body and removes, drag for sediment board 2 and get back to the horizontality, start speed reducer 10, halyard 6 unreels, mounting panel 8 moves towards 1 bottom of furnace body, movable pulley 5 and pivot 9 rotate, cable 23 is unreeled, connecting block 12 moves towards 1 bottom of furnace body, thereby will drag for sediment board 2 and put back in the molten iron, be convenient for the sediment of dragging for the next time.

Referring to fig. 1 and 2, a first stirring shaft 34 and a driving machine 35 for driving the first stirring shaft 34 to rotate are connected to the top of the furnace body 1, the driving machine 35 is connected to the top of the furnace body 1, a driving gear 36 is connected to an output shaft of the driving machine 35, the first stirring shaft 34 is coaxially connected in the furnace body 1 and rotatably connected to the inner top of the furnace body 1, the first stirring shaft 34 penetrates through the top of the furnace body 1 and is coaxially connected with a following gear 37, the driving gear 36 is engaged with the following gear 37, the first stirring shaft 34 is hollow, an air pump box 38 for inputting inert gas to the first stirring shaft 34 is connected to the top of the furnace body 1 through a support, the air pump box 38 is connected to the first stirring shaft 34, the side wall of the end of the first stirring shaft 34 in the furnace body 1 is connected with a rotating plate 39, the rotating plate 39 is oval, the first stirring shaft 34 is connected with a motor 40, the rotating plate 39 is hinged with a second stirring shaft 41, the second stirring shaft 41 is arranged in a hollow mode, the side wall of the second stirring shaft 41 is connected with a guide block 42 in a rotating mode, the side wall of the first stirring shaft 34 is provided with a guide groove 43 along the axial direction, the guide block 42 is located in the guide groove 43 and is in sliding fit with the guide groove 43, a transmission pipe 44 is connected between the first stirring shaft 34 and the second stirring shaft 41, the transmission pipe 44 is a high-temperature-resistant hose, one end of the second stirring shaft 41 close to the bottom of the furnace body 1 is connected with a spraying plate 45, and a nozzle is arranged on the spraying plate 45.

Referring to fig. 1 and 2, the slag scooping plate 2 is provided with an escape groove 18 for accommodating the first stirring shaft 34 and the second stirring shaft 41.

The application principle of the ultra-low carbon steel desulfurization converter with high utilization rate is as follows:

molten iron and raw materials for desulfurization and slagging are put into the furnace body 1 through a feeding hole, a driving machine 35 and a motor 40 are started, the driving machine 35 drives a first stirring shaft 34 to rotate through transmission between a driving gear 36 and a follow-up gear 37, the motor 40 drives a rotating plate 39 to rotate, one end of a second stirring shaft 41 rotates along the axis of the rotating plate 39, a guide block 42 moves along the axial direction of the first stirring shaft 34, so that when the first stirring shaft 34 rotates along with the axis of the rotating plate as the center, the second stirring shaft 41 rotates in a vertical plane in the molten iron, inert gas is input into the first stirring shaft 34 and the second stirring shaft 41 through an air pump box 38 and is sprayed into the molten iron through nozzles, and the inert gas, the first stirring shaft 34 and the second stirring shaft 41 stir the molten iron, so that the fluidity of the molten iron is improved, and the reaction effect between the molten iron and the raw materials is achieved.

After producing the slag in the furnace body 1, start speed reducer 10, pulling halyard 6 with mounting panel 8 with drag for slag plate 2 orientation and throw the slag notch 30 and remove, pivot 9 rotates, 23 pulling forked tail pieces of cable remove, when the forked tail piece remove to with support 27 butt, push pedal 28 promotes and drags for slag plate 2 and make sliding shaft 17 relative with arc groove 19, sliding shaft 17 gets into arc groove 19, drag for slag plate 2 and rotate, the slag is pressed from both sides between apron 31 and drag for slag plate 2, behind the molten iron filtering in the slag, open apron 31, the slag notch 30 discharges is thrown from throwing to the slag, thereby reduced and led to the fact the wasting of resources at the slagging-off in-process to the molten iron.

Claims

1. The utility model provides a high utilization ultra-low carbon steel desulfurization converter, includes furnace body (1), be provided with feed inlet and discharge gate on furnace body (1), its characterized in that: still include the filter residue device, the filter residue device is including dragging for slag plate (2), drag for slag plate (2) through mounting panel (8) and furnace body (1) along the axial sliding connection of furnace body (1), the filter residue device is still including being used for driving mounting panel (8) along furnace body (1) axial displacement's lifting unit, drag for slag plate (2) and articulate through linkage assembly and mounting panel (8), it is provided with on slag plate (2) and strains mouth of a river (7).

2. The high-utilization ultra-low carbon steel desulfurization converter according to claim 1, characterized in that: lifting unit includes fixed pulley (4), movable pulley (5), halyard (6) and is used for pulling the driving source of halyard (6), fixed pulley (4) rotate to be connected on the position of keeping away from furnace body (1) bottom on the inside wall of furnace body (1), movable pulley (5) rotate to be connected on mounting panel (8), the one end fixed connection of halyard (6) is on fixed pulley (4), and the other end walks around movable pulley (5) and fixed pulley (4) in proper order and is connected with the driving source.

3. The high-utilization ultra-low carbon steel desulfurization converter according to claim 2, characterized in that: be provided with on mounting panel (8) through hole (14), be provided with spout (13) on the lateral wall of through hole (14), the length direction perpendicular to furnace body (1) axial of spout (13), there is slider (15) through spout (13) sliding connection on mounting panel (8), be connected with first elastic component (21) between the lateral wall that slider (15) and spout (13) are close to furnace body (1) axle center, the one end of dragging for sediment board (2) is inserted and is established in through hole (14), drag for and be connected with articulated shaft (16) and sliding shaft (17) on sediment board (2), sliding shaft (17) set up one side of keeping away from furnace body (1) axle center in articulated shaft (16), the tip of articulated shaft (16) is articulated with slider (15), the cover is equipped with the torsional spring on articulated shaft (16), sliding shaft (17) are located spout (13) and with spout (13) sliding fit, be provided with arc wall (19) on spout (13) is close to the lateral wall of furnace body (1) bottom, arc shaft (17) and sliding fit with sliding groove (19).

4. The high-utilization ultra-low carbon steel desulfurization converter according to claim 3, characterized in that: the linkage assembly comprises a connecting block (12), a support plate (27) and a push plate (28), the connecting block (12) is connected to a mounting plate (8) through a dovetail groove (11) along the axial sliding direction of the furnace body (1), a through hole (14) is formed in the connecting block (12), a slag dragging plate (2) penetrates through the through hole (14), a first sliding hole (24) is formed in the side wall of the dovetail groove (11) far away from the bottom of the furnace body (1), the axial direction of the first sliding hole (24) is arranged along the axial direction of the furnace body (1), the support plate (27) is connected to the bottom of the first sliding hole (24) through a pressure spring (26), a second sliding hole (25) is formed in the position of the mounting plate (8) far away from the bottom of the furnace body (1), the second sliding hole (25) is located in one side of the sliding groove (13) far away from the axis of the furnace body (1) and communicated with the sliding groove (13), the axial direction of the second sliding hole (25) is perpendicular to the axis of the furnace body (1), the push plate (28) is connected to the mounting plate (8) through the axial direction of the second sliding hole (48), and the mounting plate (48) is communicated with the mounting plate (8), the side wall that second slide opening (25) was kept away from in push pedal (28) and the lateral wall of installation cavity (48) are connected with second elastic component (46) between, the elasticity of second elastic component (46) is stronger than first elastic component (21), the cross-section of push pedal (28) sets up to the U-shaped, be provided with through-hole (29) on resisting board (27), a extension board of push pedal (28) run through-hole (29) and with through-hole (29) sliding fit, another extension board is located second slide opening (25) and with second slide opening (25) sliding fit, works as when connecting block (12) and dovetail (11) keep away from the lateral wall butt of furnace body (1) bottom, through-hole (29) are relative with an extension board of push pedal (28), second slide opening (25) with opening (14) are relative.

5. The high-utilization ultra-low carbon steel desulfurization converter according to claim 4, characterized in that: the linkage assembly further comprises a rotating shaft (9) and a stay cable (23), the rotating shaft (9) is coaxially connected to the movable pulley (5), the stay cable (23) is wound on the rotating shaft (9), one end of the stay cable (23) is fixedly connected with the rotating shaft (9), and the other end of the stay cable is fixedly connected with the position, away from the bottom of the furnace body (1), of the mounting plate (8) through bypassing the connecting block (12) and the fixed connection.

6. The high-utilization ultra-low carbon steel desulfurization converter according to claim 1, characterized in that: be provided with on the lateral wall of furnace body (1) and throw cinder notch (30), throw cinder notch (30) and keep away from one side of furnace body (1) bottom, it has apron (31) that are used for the lid to establish and throw cinder notch (30) to articulate on the lateral wall of furnace body (1).

7. The high-utilization ultra-low carbon steel desulfurization converter according to claim 1, characterized in that: the top of furnace body (1) is connected with first (mixing) shaft (34) and is used for driving first (mixing) shaft (34) pivoted driver (35), first (mixing) shaft (34) cavity sets up, furnace body (1) top is connected with and is used for inputting air pump case (38) of inert gas to first (mixing) shaft (34), air pump case (38) are connected with first (mixing) shaft (34).

8. The high-utilization ultra-low carbon steel desulfurization converter according to claim 7, characterized in that: first (mixing) shaft (34) are located the lateral wall of the one end in furnace body (1) and are connected with commentaries on classics board (39), it has second (mixing) shaft (41) to articulate on commentaries on classics board (39), second (mixing) shaft (41) cavity sets up, it is connected with guide block (42) to rotate on the lateral wall of second (mixing) shaft (41), guide block (42) and first (mixing) shaft (34) are followed the axial sliding fit of first (mixing) shaft (34), be connected with between first (mixing) shaft (34) and second (mixing) shaft (41) transmission pipe (44), transmission pipe (44) are high temperature resistance hose.