Phosphorus pig iron recarburization and desulfurization device

Abstract

The utility model discloses a phosphorus pig iron recarburization and desulfurization device which comprises a furnace body, a controller is fixedly connected in the furnace body, a heating coil is fixedly connected above the controller, two fixing grooves are symmetrically formed in the two sides of the interior of the furnace body, two connecting plates are connected in the two fixing grooves in a sliding mode, and the two connecting plates are fixedly connected with the controller. The upper portions of the two connecting plates are fixedly connected with two hanging rings, one ends of the two connecting plates are fixedly connected with a circular containing disc, the circular containing disc is located over the heating coil, and the upper portion of the furnace body is connected with a cover plate through a hinge. Carbon powder, a desulfurizing agent and other chemical reagents needing to be added are placed in the circular containing disc, then the phosphorus pig iron block is placed, the cover plate is closed, heat of the heating coil is transferred into the circular containing disc, the air pump is started, and the air pump conveys nitrogen connected with the air inlet pipe into the furnace body through the conveying pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphorus pig iron processing, in particular to a phosphorus pig iron carbonization and desulfurization device. Background Art

[0002] At present, in aluminum electrolysis production, prebaked anodes are called the "heart" of the electrolytic cell. The prebaked anode is composed of an anode carbon block and an aluminum guide rod. Specifically, phosphorus pig iron water is poured into the gap between the steel claw of the aluminum guide rod and the carbon bowl of the anode carbon block. After cooling, the anode carbon block and the aluminum guide rod are combined into one. The phosphorus pig iron plays a role of connection and conduction. Reducing the Fe-C voltage drop of the prebaked anode is one of the ways to reduce the production cost of electrolytic aluminum. Practice has shown that adjusting the element ratio of phosphorus pig iron is the best way to reduce the Fe-C voltage drop. In phosphorus pig iron, C can change the basic organization of phosphorus pig iron, and then change the strength, hardness and fluidity of phosphorus pig iron. The higher the C content, the better the fluidity of phosphorus pig iron water, the smaller the shrinkage during room temperature cooling, and the more conducive to reducing the Fe-C voltage drop. After long-term use, the internal carbon content of phosphorus pig iron will decrease, and it needs to be used after carbon addition and desulfurization operations, and this operation needs to be carried out at high temperature. Due to the high temperature, the reaction device cannot use sealing rubber to ensure airtightness to prevent external oxygen from oxidizing with carbon.

[0003] Prior art CN209383822U discloses a phosphorus pig iron carburization and desulfurization device, in which an air pump is fixed on the left outer wall of the furnace body to allow nitrogen to pass through it, and the nitrogen is passed into the furnace body from the middle of the lower end of the furnace body, and then discharged from the air outlet of the upper cover, without ensuring the airtightness of the furnace body, so that during the carburization and desulfurization reaction of the phosphorus pig iron, the added carbon powder cannot react with the oxygen in the air.

[0004] However, the disadvantage of the above technical solution is that the above device cannot recycle nitrogen for reuse, which wastes resources. Therefore, it is necessary to design a phosphorus pig iron carbon increase and desulfurization device. Utility Model Content

[0005] The utility model aims to provide a device for carbonizing and desulfurizing phosphorus pig iron to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a phosphorus pig iron carbon increase and desulfurization device, comprising a furnace body, a controller is fixedly connected inside the furnace body, a heating coil is fixedly connected above the controller, two fixed grooves are symmetrically opened on both sides of the furnace body, two connecting plates are slidably connected in the two fixed grooves, two hanging rings are fixedly connected above the two connecting plates, one end of the two connecting plates is fixedly connected to a circular placement plate, the circular placement plate is directly above the heating coil, the upper hinge of the furnace body is connected to a cover plate, the left side of the furnace body is fixedly connected to an air pump, one end of the air pump is fixedly connected to a conveying pipe entering the furnace body, the other end of the air pump is fixedly connected to an air intake pipe, a circulation hole is opened inside the cover plate, a sealing cover is fixedly connected above the circulation hole, a socket is opened above the sealing cover, a connecting pipe is sealed and plugged in the socket, the other end of the connecting pipe is connected to the air intake pipe, and a cooling mechanism is fixedly connected directly below the connecting pipe on the upper surface of the cover plate.

[0007] According to the above technical solution, the cooling mechanism includes two support plates, a shell is fixedly connected above the two support plates, a rotating fan is fixedly connected inside the shell, and the upper and lower surfaces of the shell are grid plates.

[0008] According to the above technical solution, two first slots are symmetrically opened on both sides of the interior of the socket, a telescopic spring is fixedly connected in the first slot, a round head clamp is fixedly connected to the telescopic end of the telescopic spring, and semicircular grooves are symmetrically opened on the outer side of the connecting tube, and the round head end of the round head clamp is clamped in the semicircular groove.

[0009] According to the above technical solution, the limiting blocks are symmetrically fixedly connected on both sides of the round head clamping block, and limiting grooves are symmetrically opened on both sides inside the first notch, and the limiting blocks are slidably connected in the limiting grooves.

[0010] According to the above technical solution, the left side of the connecting pipe is fixedly connected to the exhaust pipe, and the exhaust pipe is fixedly connected to the first valve.

[0011] According to the above technical solution, a second valve is fixedly connected below the internal exhaust pipe of the connecting pipe.

[0012] According to the above technical solution, a connecting block is fixedly connected to the upper right side of the furnace body, and a rotating hole is vertically opened inside the connecting block and the cover plate, and a bolt is slidably connected in the rotating hole.

[0013] According to the above technical solution, a nut is fixedly connected below the rotating hole, and the bolt is threadedly connected to the nut.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: in the utility model, the material of the circular placing plate in the device is a device that transfers heat quickly. When using the device, the chemical reagents that need to be added, such as carbon powder and desulfurizer, are placed in the circular placing plate, and then the phosphorus pig iron block is placed, the cover plate is closed, and the heating coil is powered on and heated by the controller. The heat of the heating coil is transferred to the circular placing plate, and the air pump is started. The air pump transports the nitrogen connected to the intake pipe into the furnace body through the delivery pipe, and then the nitrogen flows into the intake pipe through the connecting pipe, so that the nitrogen can be recycled. By providing a cooling mechanism, the refluxed nitrogen is cooled down. The connecting pipe in the device is a high temperature resistant pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall side sectional structure of the utility model;

[0019] Figure 4 The utility model Figure 2 A in the enlarged view;

[0020] In the figure: 1, furnace body, 2, controller, 3, heating coil, 4, fixing groove, 5, connecting plate, 6, lifting ring, 7, circular placement plate, 8, cover plate, 9, air pump, 10, delivery pipe, 11, air inlet pipe, 12, flow hole, 13, sealing cover, 14, jack, 15, connecting pipe, 16, cooling mechanism, 17, support plate, 18, shell, 19, rotating fan, 21, first notch, 22, telescopic spring, 23, round head block, 24, semicircular groove, 25, limit block, 26, limit groove, 27, exhaust pipe, 28, first valve, 29, second valve, 30, connecting block, 31, rotating hole, 32, bolt, 33, nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a phosphorus pig iron carbon increase and desulfurization device, including a furnace body 1, a controller 2 is fixedly connected inside the furnace body 1, a heating coil 3 is fixedly connected above the controller 2, two fixed grooves 4 are symmetrically opened on both sides of the furnace body 1, two connecting plates 5 are slidably connected in the two fixing grooves 4, two hanging rings 6 are fixedly connected above the two connecting plates 5, one end of the two connecting plates 5 is fixedly connected with a circular placement plate 7, the circular placement plate 7 is just above the heating coil 3, a cover plate 8 is hingedly connected to the top of the furnace body 1, an air pump 9 is fixedly connected to the left side of the furnace body 1, one end of the air pump 9 is fixedly connected with a conveying pipe 10 entering the furnace body 1, and the other end of the air pump 9 is fixedly connected with an air inlet pipe 11, a flow hole 12 is opened inside the cover plate 8, a sealing cover 13 is fixedly connected above the flow hole 12, and a plug hole 14 is opened above the sealing cover 13, and the plug hole A connecting pipe 15 is sealed and plugged in 14, and the other end of the connecting pipe 15 is connected to the air inlet pipe 11. A cooling mechanism 16 is fixedly connected to the upper surface of the cover plate 8 just below the connecting pipe 15. The circular placing plate 7 in the present device is made of a material that transfers heat quickly. When using the present device, the chemical reagents that need to be added, such as carbon powder and desulfurizer, are placed in the circular placing plate 7, and then the phosphorus pig iron block is placed, the cover plate 8 is closed, and the heating coil 3 is powered on and heated by the controller 2. The heat of the heating coil 3 is transferred to the circular placing plate 7, and the air pump 9 is started. The air pump 9 transports the nitrogen connected to the air inlet pipe 11 to the furnace body 1 through the delivery pipe 10, and then the nitrogen flows into the air inlet pipe 11 through the connecting pipe 15, so that the nitrogen can be recycled. By providing a cooling mechanism 16, the refluxed nitrogen is cooled down. The connecting pipe 15 in the present device is a high temperature resistant pipe;

[0023] according to Figure 2 As shown, the cooling mechanism 16 includes two support plates 17, a housing 18 is fixedly connected above the two support plates 17, a rotating fan 19 is fixedly connected inside the housing 18, and the upper and lower surfaces of the housing 18 are mesh plates. By starting the rotating fan 19, the rotating fan 19 accelerates the air flow rate to cool down;

[0024] according to Figure 4As shown, two first notches 21 are symmetrically provided on both sides of the jack 14, a telescopic spring 22 is fixedly connected in the first notch 21, a round-head block 23 is fixedly connected to the telescopic end of the telescopic spring 22, and a semicircular groove 24 is symmetrically provided on the outer side of the connecting tube 15, and the round-head end of the round-head block 23 is engaged with the semicircular groove 24. By providing the telescopic spring 22, the telescopic spring 22 pushes the round-head block 23 to engage with the semicircular groove 24, so that the connecting tube 15 and the sealing cover 13 can be fixedly plugged, and by pulling the connecting tube 15 upward, the round-head block 23 moves in the direction of the telescopic spring 22, and the round-head block 23 and the semicircular groove 24 are staggered with each other, so that the connecting tube 15 can be pulled out, and after the connecting tube 15 is pulled out, the cover plate 8 can be opened, and then the product after the reaction can be lifted out through the two lifting rings 6 for pouring operation;

[0025] according to Figure 4 As shown, the two sides of the round head block 23 are symmetrically fixedly connected to the limiting blocks 25, and the two sides of the first notch 21 are symmetrically provided with limiting grooves 26, and the limiting blocks 25 are slidably connected in the limiting grooves 26;

[0026] according to Figure 2 As shown, the left side of the connecting pipe 15 is fixedly connected to an exhaust pipe 27, and a first valve 28 is fixedly connected inside the exhaust pipe 27;

[0027] according to Figure 2 As shown, a second valve 29 is fixedly connected to the lower part of the internal exhaust pipe 27 of the connecting pipe 15. By providing the exhaust pipe 27, the first valve 28 should be opened when nitrogen is first injected, and the mixed gas inside the furnace body 1 should be discharged and then the second valve 29 should be opened for recycling and secondary utilization;

[0028] according to Figure 2 As shown, a connection block 30 is fixedly connected to the upper right side of the furnace body 1, and a rotation hole 31 is vertically opened inside the connection block 30 and the cover plate 8, and a bolt 32 is slidably connected in the rotation hole 31;

[0029] according to Figure 2 As shown, a nut 33 is fixedly connected below the rotating hole 31, and a bolt 32 is threadedly connected to the nut 33. By threading the bolt 32 and the nut 33, the cover plate 8 is closed more tightly and has a strong sealing performance;

[0030] When using the utility model, when using the device, the chemical reagents that need to be added, such as carbon powder and desulfurizing agent, are placed in the circular placement tray 7, and then the phosphorus pig iron block is placed, the cover plate 8 is closed, and the heating coil 3 is powered on and heated by the controller 2. The heat of the heating coil 3 is transferred to the circular placement tray 7, and the air pump 9 is started. The air pump 9 transports the nitrogen connected to the intake pipe 11 to the furnace body 1 through the delivery pipe 10, and then the nitrogen flows into the intake pipe 11 through the connecting pipe 15, so that the nitrogen can be recycled. By providing a cooling mechanism 16, the refluxed nitrogen is cooled. The connecting pipe 15 in the device is a high temperature resistant pipe. By providing The telescopic spring 22 pushes the round-head block 23 to engage with the semicircular groove 24, so that the connecting pipe 15 and the sealing cover 13 can be fixedly plugged. By pulling the connecting pipe 15 upward, the round-head block 23 moves in the direction of the telescopic spring 22, and the round-head block 23 and the semicircular groove 24 are staggered with each other, so that the connecting pipe 15 can be pulled out. After the connecting pipe 15 is pulled out, the cover plate 8 can be opened, and then the product after the reaction can be lifted out through the two lifting rings 6 for pouring operation. The components of this device are all universal standard parts or components known to technicians in this field. Its structure and principle can be known to technicians in this field through technical manuals or through conventional experimental methods.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for carbonizing and desulfurizing phosphorus pig iron, comprising a furnace body (1), characterized in that: The furnace body (1) is fixedly connected to a controller (2) inside, and a heating coil (3) is fixedly connected above the controller (2). Two fixing grooves (4) are symmetrically opened on both sides of the furnace body (1). Two connecting plates (5) are slidably connected in the two fixing grooves (4). Two hanging rings (6) are fixedly connected above the two connecting plates (5). A circular placement plate (7) is fixedly connected to one end of the two connecting plates (5). The circular placement plate (7) is directly above the heating coil (3). A cover plate (8) is hingedly connected to the top of the furnace body (1). An air pump is fixedly connected to the left side of the furnace body (1). (9), one end of the air pump (9) is fixedly connected to a delivery pipe (10) entering the interior of the furnace body (1), and the other end of the air pump (9) is fixedly connected to an air intake pipe (11). A circulation hole (12) is opened inside the cover plate (8), and a sealing cover (13) is fixedly connected above the circulation hole (12). A plug hole (14) is opened above the sealing cover (13), and a connecting pipe (15) is sealed and plugged into the plug hole (14). The other end of the connecting pipe (15) is connected to the air intake pipe (11), and a cooling mechanism (16) is fixedly connected to the upper surface of the cover plate (8) just below the connecting pipe (15).

2. A phosphorus pig iron carbonization and desulfurization device according to claim 1, characterized in that: The cooling mechanism (16) comprises two support plates (17), a shell (18) is fixedly connected above the two support plates (17), a rotating fan (19) is fixedly connected inside the shell (18), and the upper and lower surfaces of the shell (18) are grid plates.

3. A phosphorus pig iron carbonization and desulfurization device according to claim 2, characterized in that: Two first notches (21) are symmetrically formed on both sides of the inside of the insertion hole (14); a telescopic spring (22) is fixedly connected inside the first notch (21); a round-head clamping block (23) is fixedly connected to the telescopic end of the telescopic spring (22); and a semicircular groove (24) is symmetrically formed on the outside of the connecting tube (15); the round-head end of the round-head clamping block (23) is clamped with the semicircular groove (24).

4. A phosphorus pig iron carbonization and desulfurization device according to claim 3, characterized in that: The two sides of the round head clamping block (23) are symmetrically fixedly connected to the limiting blocks (25), and the two sides of the first notch (21) are symmetrically provided with limiting grooves (26), and the limiting blocks (25) are slidably connected in the limiting grooves (26).

5. The device for carbonization and desulfurization of phosphorus pig iron according to claim 4, characterized in that: The left side of the connecting pipe (15) is fixedly connected to an exhaust pipe (27), and the exhaust pipe (27) is fixedly connected to a first valve (28).

6. The device for carbonization and desulfurization of phosphorus pig iron according to claim 5, characterized in that: A second valve (29) is fixedly connected below the internal exhaust pipe (27) of the connecting pipe (15).

7. The device for carbonization and desulfurization of phosphorus pig iron according to claim 6, characterized in that: A connection block (30) is fixedly connected to the upper right side of the furnace body (1), and a rotation hole (31) is vertically opened inside the connection block (30) and the cover plate (8), and a bolt (32) is slidably connected inside the rotation hole (31).

8. The device for carbonization and desulfurization of phosphorus pig iron according to claim 7, characterized in that: A nut (33) is fixedly connected below the rotating hole (31), and the bolt (32) is threadedly connected to the nut (33).

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