Annular reduction chamber suitable for production of reduced iron powder

Abstract

The invention discloses an annular reduction chamber suitable for reduced iron powder production, and relates to the technical field of iron powder production, the annular reduction chamber comprises a bottom frame, the top of the bottom frame is fixedly connected with a supporting table, the bottom of the supporting table is fixedly connected with a motor, and the output end of the motor penetrates through the supporting table and extends to the upper side; and the supporting assembly is located above the supporting table. According to the annular reduction chamber suitable for production of the reduced iron powder, through cooperative operation of a motor and a second electric telescopic rod, refractory tanks can be sequentially fed into the corresponding preheating chamber, the high-temperature chamber and the cooling chamber for reduction machining; the raw materials in the fire-resistant tank are located in the corresponding small closed spaces when different reduction processes are carried out, the heat conduction efficiency in the small closed spaces is high, energy is saved, and the production cost of the reduced iron powder is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of iron powder production, in particular to an annular reduction chamber suitable for reducing iron powder production. Background Art

[0002] The production of reduced iron powder is to reduce iron oxides with solid or gaseous reducing agents under high temperature conditions to produce sponge-like iron, thereby obtaining reduced iron powder.

[0003] In the prior art, when reducing iron powder is produced, multiple processes of preheating, heating and cooling the raw materials are required. The traditional production method is to implement the production process in sequence in a larger reduction chamber. Since the reduction chamber needs to be equipped with equipment required for various processes, the reduction chamber space is larger than the refractory tank. When preheating, heating and cooling are performed in a larger space, more energy is required, which makes the production cost of reduced iron powder higher.

[0004] Therefore, we propose an annular reduction chamber suitable for the production of reduced iron powder in order to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an annular reduction chamber suitable for the production of reduced iron powder to solve the problem raised in the above background technology that when preheating, heating and cooling processes are performed in a larger space, more energy is consumed, resulting in higher production costs for reduced iron powder.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an annular reduction chamber suitable for the production of reduced iron powder, comprising: a base frame, the top of the base frame is fixedly connected to a support platform, the bottom of the support platform is fixedly connected to a motor, and the output end of the motor passes through the support platform and extends to the upper side; a support component, the support component is located above the support platform, the support component includes a rotating shaft and a slide rail, the outer surface of the slide rail is slidably connected to multiple groups of pulleys, the tops of multiple pulleys are rotatably connected to support shafts, the upper end surfaces of multiple groups of support shafts are fixedly connected to sliding plates, and the tops of multiple sliding plates are fixedly connected to the first A connecting plate, wherein a plurality of supporting rods are evenly and fixedly connected to the top of the first connecting plate, a second connecting plate is fixedly connected between the upper end surfaces of the plurality of supporting rods, and a reduction chamber body is fixedly connected to the top of the second connecting plate; a reduction assembly, wherein the reduction assembly is fixedly connected to the top of the support platform, the reduction assembly comprises a plurality of supporting legs, and an annular plate is fixedly connected between the upper end surfaces of the plurality of supporting legs; a preheating assembly, wherein the preheating assembly is fixedly connected to the top of the support platform, and the preheating assembly comprises a dust collector, an air storage tank and an air pump; a feeding assembly, wherein the feeding assembly is fixedly connected to the top of the support platform, and the feeding assembly comprises a fixed frame.

[0007] Preferably, the motor output end is fixedly connected to the rotating shaft, the slide rail is fixedly connected to the top of the support platform, the upper end surface of the rotating shaft is fixedly connected with a gear, the inner surface of the first connecting plate is fixedly connected with a gear ring, the gear is located on the inner side of the first connecting plate, and the gear is meshingly connected with the gear ring.

[0008] Preferably, a notch is provided on the outer surface of the reduction chamber body, a plurality of fixing rods are fixedly connected to the outer surface of the reduction chamber body, an outer ring is fixedly connected between the end faces of the plurality of fixing rods, the outer ring is located outside the reduction chamber body, a connecting port is fixedly connected to the inner surface of the outer ring, the connecting port is fixedly connected to the reduction chamber body, and the connecting port matches the position of the notch.

[0009] Preferably, a high temperature chamber, a cooling chamber and a preheating chamber are fixedly connected to the top of the annular plate respectively, and the preheating chamber, the cooling chamber and the high temperature chamber are used to perform reduction treatment on the raw materials in sequence, and the preheating chamber, the cooling chamber and the high temperature chamber are all in a fit state with the outer surface of the outer ring.

[0010] Preferably, the outer surface of the high-temperature chamber is fixedly connected to a combustion chamber, the outer surface of the combustion chamber is fixedly connected to an air supply pipe, the air supply pipe is used to connect to a natural gas supply device, the air supply pipe is connected to the high-temperature chamber, the inner surface of the preheating chamber is fixedly connected to a heating plate, the high-temperature chamber, the cooling chamber and the preheating chamber form a complete circular ring, the high-temperature chamber, the cooling chamber and the preheating chamber are evenly arranged, and the connecting port is located at the inner side of the high-temperature chamber, the cooling chamber and the preheating chamber.

[0011] Preferably, the dust collector input end is fixedly connected to a collecting pipe, the collecting pipe is fixedly connected to the top of the high-temperature chamber, the dust collector output end is fixedly connected to a delivery pipe, the end face of the delivery pipe is fixedly connected to the top of the gas storage tank, the outer surface of the gas storage tank is fixedly connected to an exhaust pipe, and a control valve is provided inside the exhaust pipe.

[0012] Preferably, the air pump input end is fixedly connected to a first connecting pipe, the first connecting pipe is fixedly connected to the air storage tank, and the air pump output end is fixedly connected to a second connecting pipe, the second connecting pipe is fixedly connected to the preheating chamber.

[0013] Preferably, a first electric telescopic rod is fixedly connected to the bottom of the fixed frame, a push plate is fixedly connected to the lower end surface of the first electric telescopic rod, two groups of push rods are symmetrically fixedly connected to the bottom of the push plate, a cover plate is fixedly connected between the lower end surfaces of the two groups of push rods, the cover plate is located above the reduction chamber body, and the cross-section of the cover plate is larger than the cross-section of the reduction chamber body.

[0014] Preferably, the bottom of the cover plate is symmetrically fixedly connected with mounting rods, a fixing ring is fixedly connected between the lower end surfaces of the two mounting rods, the inner surface of the fixing ring is fixedly connected with a refractory tank, and the inner bottom of the refractory tank is fixedly connected with a separator tank.

[0015] Preferably, three slots are provided on the top of the cover plate, a second electric telescopic rod is fixedly connected to the bottom of the push plate, a circular plate is fixedly connected to the lower end surface of the second electric telescopic rod, the cross-section of the circular plate is smaller than the cross-section of the cover plate, the circular plate is located above the cover plate, three baffles are fixedly connected to the bottom of the circular plate, the outer surface of the baffle is plugged into the inner surface of the slot, the baffle is located inside the reduction chamber body, the outer surface of the baffle is in contact with the inner surface of the reduction chamber body, the baffle is used to divide the interior of the reduction chamber body into three independent spaces, and the baffle cooperates with the positions of the preheating chamber, the cooling chamber and the high-temperature chamber.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When reducing iron powder is produced, the interior of the reduction chamber body is divided into three independent spaces by using multiple baffles. When the refractory tank is sent into the refractory tank, the refractory tank is in the corresponding position of the preheating chamber, so that the space of the preheating chamber corresponding to the reduction chamber body is in a closed state. At this time, the reduction chamber body is a space of one-third of which contains the refractory tank in a closed state. Subsequently, through the coordinated operation of the motor and the second electric telescopic rod, the refractory tank can be sent into the corresponding preheating chamber, high temperature chamber and cooling chamber in turn for reduction processing. Since the internal space of the reduction chamber body is closed into one-third, the raw materials inside the refractory tank are in the corresponding smaller closed space when carrying out different reduction processes. The heat conduction efficiency in the smaller closed space is higher, and it is more energy-saving, thereby reducing the production cost of reduced iron powder.

[0017] 2. In the process of high-temperature heating and reduction of the refractory tank through the high-temperature chamber, the high-temperature flue gas generated by the combustion of natural gas in the reduction chamber body will enter the dust collector through the connection of the collecting pipe. The dust in the flue gas will be intercepted and filtered by the use of the dust collector. The flue gas after dust treatment will enter the gas storage tank through the connection of the conveying pipe for storage. When the raw materials continue to be fed through the preheating chamber for preheating treatment, the air pump can be started to input the flue gas into the preheating chamber, and the flue gas is discharged through the pipeline at the bottom of the preheating chamber for circulation. At this time, the high-temperature flue gas enters the preheating chamber, so that the interior of the preheating chamber is heated up. The high-temperature flue gas generated by the combustion in the high-temperature chamber is used to heat the preheating chamber, which can reduce the energy consumed by the heating plate, play a role in energy saving and emission reduction, and further reduce the production cost of reduced iron powder.

[0018] 3. The second electric telescopic rod can drive the baffle to move downward through the connection of the circular plate, and the baffle can pass through the slot into the reduction chamber body. At this time, the reduction chamber body is divided into three independent spaces by using multiple baffles. The second electric telescopic rod can synchronously drive multiple baffles to move up and down, thereby achieving the purpose of quickly adjusting the baffle position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of an annular reduction chamber suitable for producing reduced iron powder according to the present invention; Figure 2 A bottom view of an annular reduction chamber suitable for producing reduced iron powder according to the present invention; Figure 3 This is a schematic diagram of the structure of a supporting assembly of an annular reduction chamber suitable for the production of reduced iron powder according to the present invention; Figure 4 An exploded view of the supporting assembly structure of an annular reduction chamber suitable for the production of reduced iron powder according to the present invention; Figure 5 This is a schematic diagram of the structure of a reduction component of an annular reduction chamber suitable for the production of reduced iron powder according to the present invention; Figure 6 This is a schematic diagram of the structure of a preheating component of an annular reduction chamber suitable for the production of reduced iron powder according to the present invention; Figure 7 This is a schematic structural diagram of a feeding assembly of an annular reduction chamber suitable for the production of reduced iron powder according to the present invention; Figure 8 The present invention is a schematic diagram of a refractory tank structure of an annular reduction chamber suitable for the production of reduced iron powder.

[0020] In the figure: 1. chassis; 2. support platform; 3. motor; 4. support assembly; 401. shaft; 402. slide rail; 403. gear; 404. pulley; 405. sliding plate; 406. first connecting plate; 407. support rod; 408. second connecting plate; 409. gear ring; 410. reduction chamber body; 411. notch; 412. fixing rod; 413. outer ring; 414. connecting port; 5. reduction assembly; 501. support leg; 502. annular plate; 503. high temperature chamber; 504. combustion chamber; 505. air supply pipe; 506. cooling chamber; 507. preheating chamber; 508 , heating plate; 6, preheating assembly; 601, dust collector; 602, gas storage tank; 603, collecting pipe; 604, exhaust pipe; 605, control valve; 606, delivery pipe; 607, first connecting pipe; 608, air pump; 609, second connecting pipe; 7, feeding assembly; 701, fixing frame; 702, first electric telescopic rod; 703, push plate; 704, push rod; 705, cover plate; 706, slot; 707, second electric telescopic rod; 708, round plate; 709, baffle; 710, mounting rod; 711, fixing ring; 712, refractory tank; 713, separation tank. DETAILED DESCRIPTION

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

[0022] Reference Figure 1-Figure 8As shown, the present invention provides a technical solution: an annular reduction chamber suitable for the production of reduced iron powder, comprising: a base frame 1, a support platform 2 is fixedly connected to the top of the base frame 1, a motor 3 is fixedly connected to the bottom of the support platform 2, and the output end of the motor 3 passes through the support platform 2 and extends to the upper side; a support component 4, the support component 4 is located above the support platform 2, the support component 4 includes a rotating shaft 401 and a slide rail 402, the outer surface of the slide rail 402 is slidably connected to multiple groups of pulleys 404, the tops of multiple pulleys 404 are rotatably connected to support shafts, sliding plates 405 are fixedly connected between the upper end surfaces of the multiple groups of support shafts, first connecting plates 406 are fixedly connected between the tops of the multiple sliding plates 405, and multiple support rods 407 are evenly fixedly connected to the tops of the first connecting plates 406. A second connecting plate 408 is fixedly connected between the upper end surfaces of 407, and a reduction chamber body 410 is fixedly connected to the top of the second connecting plate 408; a reduction component 5, the reduction component 5 is fixedly connected to the top of the support platform 2, the reduction component 5 includes a plurality of legs 501, and an annular plate 502 is fixedly connected between the upper end surfaces of the plurality of legs 501; a preheating component 6, the preheating component 6 is fixedly connected to the top of the support platform 2, the preheating component 6 includes a dust collector 601, an air tank 602 and an air pump 608; a feeding component 7, the feeding component 7 is fixedly connected to the top of the support platform 2, the feeding component 7 includes a fixed frame 701, the output end of the motor 3 is fixedly connected to the rotating shaft 401, the slide rail 402 is fixedly connected to the top of the support platform 2, the upper end surface of the rotating shaft 401 is fixedly connected to the gear 403, and the first A toothed ring 409 is fixedly connected to the inner surface of a connecting plate 406, a gear 403 is located at the inner side of the first connecting plate 406, the gear 403 is meshed with the toothed ring 409, a notch 411 is provided on the outer surface of the reduction chamber body 410, a plurality of fixed rods 412 are fixedly connected to the outer surface of the reduction chamber body 410, an outer ring 413 is fixedly connected between the end faces of the plurality of fixed rods 412, the outer ring 413 is located at the outer side of the reduction chamber body 410, a connecting port 414 is fixedly connected to the inner surface of the outer ring 413, the connecting port 414 is fixedly connected to the reduction chamber body 410, and the connecting port 414 matches the position of the notch 411, a high temperature chamber 503, a cooling chamber 506 and a preheating chamber 507 are fixedly connected to the top of the annular plate 502, the preheating chamber 507 and the cooling chamber 506 and the high temperature chamber 503 are used to carry out reduction treatment on the raw materials in sequence, the preheating chamber 507, the cooling chamber 506 and the high temperature chamber 503 are all in a state of being in contact with the outer surface of the outer ring 413, the outer surface of the high temperature chamber 503 is fixedly connected with the combustion chamber 504, the outer surface of the combustion chamber 504 is fixedly connected with the gas supply pipe 505, the gas supply pipe 505 is used to connect the natural gas supply device, the gas supply pipe 505 is in a state of communication with the high temperature chamber 503, the inner surface of the preheating chamber 507 is fixedly connected with the heating plate 508, the high temperature chamber 503, the cooling chamber 506 and the preheating chamber 507 form a complete ring state, the high temperature chamber 503, the cooling chamber 506 and the preheating chamber 507 are evenly arranged, and the connecting port 414 is located at the inner side of the high temperature chamber 503, the cooling chamber 506 and the preheating chamber 507.The bottom of the fixed frame 701 is fixedly connected with a first electric telescopic rod 702, the lower end surface of the first electric telescopic rod 702 is fixedly connected with a push plate 703, the bottom of the push plate 703 is symmetrically fixedly connected with two groups of push rods 704, the lower end surfaces of the two groups of push rods 704 are fixedly connected with a cover plate 705, the cover plate 705 is located above the reduction chamber body 410, the cross section of the cover plate 705 is larger than the cross section of the reduction chamber body 410, the bottom of the cover plate 705 is symmetrically fixedly connected with a mounting rod 710, the lower end surfaces of the two mounting rods 710 are fixedly connected with a fixing ring 711, the inner surface of the fixing ring 711 is fixedly connected with a refractory tank 712, the bottom of the refractory tank 712 is fixedly connected with a separation tank 713, and the top of the cover plate 705 is provided with three A slot 706 is fixedly connected to the bottom of the push plate 703, and a circular plate 708 is fixedly connected to the lower end surface of the second electric telescopic rod 707. The cross section of the circular plate 708 is smaller than the cross section of the cover plate 705. The circular plate 708 is located above the cover plate 705. Three baffles 709 are fixedly connected to the bottom of the circular plate 708. The outer surface of the baffle 709 is plugged and connected with the inner surface of the slot 706. The baffle 709 is located inside the reduction chamber body 410. The outer surface of the baffle 709 fits the inner surface of the reduction chamber body 410. The baffle 709 is used to divide the interior of the reduction chamber body 410 into three independent spaces. The baffle 709 cooperates with the positions of the preheating chamber 507, the cooling chamber 506 and the high temperature chamber 503.

[0023] In this embodiment, when reducing iron powder is produced, the refractory tank 712 is used as a reducing container, and the partition tank 713 isolates the interior of the refractory tank 712 into two spaces. The iron scale raw material that has been preliminarily processed is put into the inner layer of the refractory tank 712, and then the reducing agent is put into the outer layer of the refractory tank 712. After the first electric telescopic rod 702 is operated, it can drive the cover plate 705 to move downward, and the refractory tank 712 enters the reduction chamber body 410. At this time, the cover plate 705 covers the top of the reduction chamber body 410, so that the reduction chamber body 410 is in a closed state. The second electric telescopic rod 707 can drive the baffle plate 709 to move downward through the connection of the circular plate 708, and the baffle plate 709 can pass through the slot 706 to enter the reduction chamber body 410. At this time, through multiple The use of a baffle 709 divides the interior of the reduction chamber body 410 into three independent spaces. When the refractory tank 712 is sent in, the connecting port 414 corresponds to the position of the preheating chamber 507. At this time, the reduction chamber body 410 is a one-third space containing the refractory tank 712 in a closed state. The heating plate 508 can be started to heat the air, so that the raw materials inside the refractory tank 712 are heated from room temperature to 950°C. At this time, the raw materials are preheated. While preheating, the motor 3 can drive the gear 403 to rotate through the connection with the rotating shaft 401. When the gear 403 rotates, it can drive the first connecting plate 406 to rotate by meshing with the gear ring 409. Through the cooperation of the slide rail 402, the pulley 404, the support shaft and the sliding plate 405 When the first connecting plate 406 is used, support can be provided for the first connecting plate 406, and the second connecting plate 408 can drive the reduction chamber body 410 to rotate. When the reduction chamber body 410 rotates, the reduction chamber body 410 can drive the outer ring 413 and the connecting port 414 to rotate through the connection of the fixing rod 412. The connecting port 414 is always in a connected state with the preheating chamber 507. Therefore, the refractory tank 712 in the closed space can be continuously preheated at this time. The refractory tank 712 will move to the baffle 709 position, and the second electric telescopic rod 707 is started to shrink and drive the baffle 709 to move up. The baffle 709 will move up to the upper position of the cover plate 705. At this time, the reduction chamber body 410 can continue to rotate. As the reduction chamber body 410 continues to rotate, the connecting port 4 14 will move to the corresponding position of the high temperature chamber 503, start the second electric telescopic rod 707 to extend and drive the baffle 709 to move down and reset, and start the ignition equipment inside the combustion chamber 504 to ignite the natural gas. The natural gas is burned inside the reduction chamber body 410, and the internal raw materials of the refractory tank 712 can be heated to 1150°C. The internal raw materials of the refractory tank 712 are heated and reduced in a closed space. The heat conduction efficiency is higher in a smaller closed space, and it is more energy-saving, which reduces the production cost of reduced iron powder. Then the refractory tank 712 will move to the corresponding position of the cooling chamber 506, and the refractory tank 712 is cooled by starting the air cooling and water cooling equipment inside the cooling chamber 506. After cooling, the finished product is taken out to complete the production of reduced iron powder. Example

[0024] Figure 1 and Figure 6 As shown, the input end of the dust collector 601 is fixedly connected to a collecting pipe 603, and the collecting pipe 603 is fixedly connected to the top of the high-temperature chamber 503. The output end of the dust collector 601 is fixedly connected to a delivery pipe 606, and the end face of the delivery pipe 606 is fixedly connected to the top of the gas storage tank 602. The outer surface of the gas storage tank 602 is fixedly connected to an exhaust pipe 604, and a control valve 605 is provided inside the exhaust pipe 604. The input end of the air pump 608 is fixedly connected to a first connecting pipe 607, and the first connecting pipe 607 is fixedly connected to the gas storage tank 602. The output end of the air pump 608 is fixedly connected to a second connecting pipe 609, and the second connecting pipe 609 is fixedly connected to the preheating chamber 507.

[0025] In this embodiment, during the process of high-temperature heating reduction of the refractory tank 712 passing through the high-temperature chamber 503, the high-temperature flue gas generated by the combustion of natural gas inside the reduction chamber body 410 will enter the dust collector 601 through the connection of the collecting pipe 603. The dust in the flue gas is intercepted and filtered by the use of the dust collector 601. The flue gas after the dust treatment will enter the gas storage tank 602 through the connection of the delivery pipe 606 for storage. At this time, the gas storage tank 602 can store the high-temperature flue gas after the dust is filtered for standby. When the stored high-temperature flue gas is too much, the control valve 60 is opened. The flue gas can be discharged from the exhaust pipe 604. When the raw materials are continuously fed to the preheating chamber 507 for preheating, the air pump 608 is started to extract the flue gas inside the gas storage tank 602 through the first connecting pipe 607, and then the flue gas is input into the preheating chamber 507 through the second connecting pipe 609. The flue gas is discharged and circulated through the pipeline at the bottom of the preheating chamber 507. At this time, the high-temperature flue gas enters the preheating chamber 507, so that the temperature inside the preheating chamber 507 is increased. The high-temperature flue gas generated by the combustion in the high-temperature chamber 503 is used to increase the temperature of the preheating chamber 507. Example

[0026] Figure 7 As shown, a second electric telescopic rod 707 is fixedly connected to the bottom of the push plate 703, and a circular plate 708 is fixedly connected to the lower end surface of the second electric telescopic rod 707. The cross-section of the circular plate 708 is smaller than the cross-section of the cover plate 705. The circular plate 708 is located above the cover plate 705. Three baffles 709 are fixedly connected to the bottom of the circular plate 708. The outer surface of the baffle 709 is plugged into the inner surface of the slot 706. The baffle 709 is located inside the reduction chamber body 410, and the outer surface of the baffle 709 is in contact with the inner surface of the reduction chamber body 410.

[0027] In this embodiment, after the first electric telescopic rod 702 is operated, the cover plate 705 can be driven to move downward through the connection between the push plate 703 and the push rod 704. The cover plate 705 moves downward through the mounting rod 710 and the fixing ring 711, so that the refractory tank 712 enters the reduction chamber body 410. At this time, the cover plate 705 covers the top of the reduction chamber body 410, so that the reduction chamber body 410 is in a closed state. At the same time, the second electric telescopic rod 707 is started to run and extend. The second electric telescopic rod 707 can drive the baffle 709 to move downward through the connection of the circular plate 708. The baffle 709 can pass through the slot 706 and enter the reduction chamber body 410. At this time, the interior of the reduction chamber body 410 is divided into three independent spaces by the use of multiple baffles 709. The second electric telescopic rod 707 can synchronously drive multiple baffles 709 to move up and down, thereby achieving the purpose of quickly adjusting the position of the baffle 709.

[0028] The use method and working principle of the device are as follows: when reducing iron powder, the first electric telescopic rod 702 is in a retracted state, at which time the cover plate 705 and the refractory tank 712 are both above the reduction chamber body 410, and the iron scale is initially processed as a raw material through crushing, magnetic separation and flotation drying, and then the refractory tank 712 is used as a reduction container, and the interior of the refractory tank 712 is separated into two spaces by the setting of a separation tank 713, and the iron scale raw material that has been initially processed is put into the inner layer of the refractory tank 712, and then the reducing agent is put into the outer layer of the refractory tank 712, at which time the first electric telescopic rod 702 is started to extend, and after the first electric telescopic rod 702 is in operation, it can be pushed by the push plate 703 and the push rod 704 The connection drives the cover plate 705 to move downward, and the cover plate 705 moves downward through the mounting rod 710 and the fixing ring 711, so that the refractory tank 712 enters the interior of the reduction chamber body 410. At this time, the cover plate 705 covers the top of the reduction chamber body 410, so that the reduction chamber body 410 is in a closed state, and at the same time, the second electric telescopic rod 707 is started to run and extend. The second electric telescopic rod 707 can drive the baffle plate 709 to move downward through the connection of the circular plate 708, and the baffle plate 709 can pass through the slot 706 to enter the interior of the reduction chamber body 410. At this time, the interior of the reduction chamber body 410 is divided into three independent spaces by the use of multiple baffle plates 709. When the refractory tank 712 is sent in, the refractory tank 712 is at the corresponding position of the preheating chamber 507. At this time, the connecting port 414 is connected to the The position of the preheating chamber 507 corresponds to that of the reduction chamber body 410. The baffle 709 is used to make the space of the preheating chamber 507 corresponding to that of the reduction chamber body 410 in a closed state. At this time, the reduction chamber body 410 is a closed state in which one-third of the space contains the refractory tank 712. The heating plate 508 is started to heat the air in the closed space. The air is heated by the heating plate 508 so that the raw materials inside the refractory tank 712 are heated from room temperature to 950°C. While preheating, the motor 3 is started to run. The motor 3 can drive the gear 403 to follow the rotation through the connection with the rotating shaft 401. When the gear 403 rotates, it can drive the first connecting plate 406 to rotate by meshing with the gear ring 409. When the first connecting plate 406 is rotated When force is applied, the cooperation of the slide rail 402, the pulley 404, the support shaft and the sliding plate 405 can provide support for the first connecting plate 406, so that the first connecting plate 406 can rotate along the annular slide rail 402. At this time, the first connecting plate 406 drives the second connecting plate 408 to rotate along with it through the connection of the support rod 407. The second connecting plate 408 can drive the reduction chamber body 410 to rotate. When the reduction chamber body 410 rotates, the reduction chamber body 410 can drive the outer ring 413 and the connecting port 414 to rotate through the connection of the fixing rod 412. Since the outer ring 413 is in a fitting state with the high temperature chamber 503, the cooling chamber 506 and the preheating chamber 507, when the connecting port 414 corresponds to the position of the preheating chamber 507,As the reduction chamber body 410 continues to rotate, the connecting port 414 is always in a connected state with the preheating chamber 507, so the refractory tank 712 in the closed space can be continuously preheated at this time. As the reduction chamber body 410 continues to rotate, the refractory tank 712 will move to the baffle 709 position. At this time, the second electric telescopic rod 707 is started to contract to drive the baffle 709 to move up. The baffle 709 will move up to the upper position of the cover plate 705. At this time, the reduction chamber body 410 can continue to rotate. As the reduction chamber body 410 continues to rotate, the connecting port 414 will move to the corresponding position of the high temperature chamber 503. After the connecting port 414 enters the high temperature chamber 503 position, the second electric telescopic rod 707 is started to extend to drive the baffle 709 to move down. At this time, the refractory tank 712 is in the closed space of the reduction chamber body 410 corresponding to the high temperature chamber 503. Natural gas is supplied to the reduction chamber body 410 through the gas supply pipe 505. The natural gas is started and ignited by the ignition device inside the combustion chamber 504. The natural gas burns inside the reduction chamber body 410, and the internal raw materials of the refractory tank 712 can be heated to 1150°C. The raw materials are heated inside the refractory tank 712 to complete the reaction reduction treatment. The rotation speed of the reduction chamber body 410 is about 120 hours to rotate one circle. The refractory tank 712 can be continuously rotated in a high temperature heating environment. With the continuous rotation of the reduction chamber body 410, the purpose of automatically and continuously switching the reduction process of the refractory tank 712 can be achieved. At this time, the internal space of the reduction chamber body 410 is closed to one-third, and the raw materials inside the refractory tank 712 are heated and reduced in the closed space. The heat conduction efficiency is higher in a smaller closed space, and it is more energy-saving, which reduces the production cost of reduced iron powder. Under continuous operation, the refractory tank 712 will move to the next baffle 709 position. At this time, the second electric telescopic rod 707 is started to drive the baffle 709 to move up for avoidance, and the refractory tank 712 will move to the corresponding position of the cooling chamber 506. The second electric telescopic rod 707 is continued to be started to drive the baffle 709 to move down to isolate and close the inside of the reduction chamber body 410, and the refractory tank 712 is cooled by starting the air cooling and water cooling equipment in the cooling chamber 506 to complete the cooling. After cooling, the finished product is taken out to complete the production of reduced iron powder. During the process of high-temperature heating and reduction in the refractory tank 712 through the high-temperature chamber 503, the high-temperature flue gas generated by the combustion of natural gas in the reduction chamber body 410 will enter the dust collector 601 through the connection of the collecting pipe 603. The dust in the flue gas is intercepted and filtered by the use of the dust collector 601. The flue gas after dust treatment will enter the gas storage tank 602 through the connection of the conveying pipe 606 for storage. At this time, the gas storage tank 602 can store the high-temperature flue gas after dust filtration for standby use. When there is too much high-temperature flue gas stored, the control valve 605 can be opened to discharge the flue gas from the exhaust pipe 604. When the raw materials are continued to be fed into the preheating chamber 507 for preheating treatment,The air pump 608 can be started to extract the flue gas inside the gas storage tank 602 through the connection of the first connecting pipe 607, and then the flue gas is input into the preheating chamber 507 through the connection of the second connecting pipe 609, and the flue gas is discharged through the pipeline at the bottom of the preheating chamber 507 for circulation. At this time, the high-temperature flue gas enters the preheating chamber 507, so that the temperature inside the preheating chamber 507 is raised. By using the high-temperature flue gas generated by the combustion in the high-temperature chamber 503 to heat the preheating chamber 507, the energy consumption of the heating plate 508 can be reduced, which plays a role in energy saving and emission reduction, and further reduces the production cost of reduced iron powder.

[0029] The wiring diagram of the motor 3, the heating plate 508, the air pump 608, the first electric telescopic rod 702 and the second electric telescopic rod 707 in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the motor 3, the heating plate 508, the air pump 608, the first electric telescopic rod 702 and the second electric telescopic rod 707 are not explained in detail.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An annular reduction chamber suitable for the production of reduced iron powder, characterized in that: include: A base frame (1), wherein the top of the base frame (1) is fixedly connected to a support platform (2), the bottom of the support platform (2) is fixedly connected to a motor (3), and the output end of the motor (3) passes through the support platform (2) and extends to the upper side; A support assembly (4), the support assembly (4) being located above the support platform (2), the support assembly (4) comprising a rotating shaft (401) and a slide rail (402), the outer surface of the slide rail (402) being slidably connected to a plurality of pulleys (404), the tops of the plurality of pulleys (404) being rotatably connected to a support shaft, the upper end surfaces of the plurality of support shafts being fixedly connected to sliding plates (405), the tops of the plurality of sliding plates (405) being fixedly connected to a first connecting plate (406), the tops of the first connecting plates (406) being evenly fixedly connected to a plurality of support rods (407), the upper end surfaces of the plurality of support rods (407) being fixedly connected to a second connecting plate (408), and the top of the second connecting plate (408) being fixedly connected to a reduction chamber body (410); A reduction assembly (5), the reduction assembly (5) being fixedly connected to the top of the support platform (2), the reduction assembly (5) comprising a plurality of legs (501), and an annular plate (502) being fixedly connected between upper end surfaces of the plurality of legs (501); A preheating component (6), the preheating component (6) being fixedly connected to the top of the support platform (2), the preheating component (6) comprising a dust collector (601), an air storage tank (602) and an air pump (608); A feeding assembly (7), wherein the feeding assembly (7) is fixedly connected to the top of the support platform (2), and the feeding assembly (7) comprises a fixing frame (701).

2. The annular reduction chamber suitable for the production of reduced iron powder according to claim 1, characterized in that: The output end of the motor (3) is fixedly connected to the rotating shaft (401), the slide rail (402) is fixedly connected to the top of the support platform (2), the upper end surface of the rotating shaft (401) is fixedly connected to a gear (403), the inner surface of the first connecting plate (406) is fixedly connected to a gear ring (409), the gear (403) is located on the inner side of the first connecting plate (406), and the gear (403) is meshingly connected to the gear ring (409).

3. The annular reduction chamber suitable for the production of reduced iron powder according to claim 2, characterized in that: A notch (411) is provided on the outer surface of the reduction chamber body (410); a plurality of fixing rods (412) are fixedly connected to the outer surface of the reduction chamber body (410); an outer ring (413) is fixedly connected between the end surfaces of the plurality of fixing rods (412); the outer ring (413) is located outside the reduction chamber body (410); a connecting port (414) is fixedly connected to the inner surface of the outer ring (413); the connecting port (414) is fixedly connected to the reduction chamber body (410); and the connecting port (414) matches the position of the notch (411).

4. The annular reduction chamber suitable for the production of reduced iron powder according to claim 3, characterized in that: The top of the annular plate (502) is respectively fixedly connected with a high-temperature chamber (503), a cooling chamber (506) and a preheating chamber (507); the preheating chamber (507), the cooling chamber (506) and the high-temperature chamber (503) are used to perform reduction treatment on the raw materials in sequence; the preheating chamber (507), the cooling chamber (506) and the high-temperature chamber (503) are all in a fit state with the outer surface of the outer ring (413).

5. The annular reduction chamber suitable for the production of reduced iron powder according to claim 4, characterized in that: The outer surface of the high temperature chamber (503) is fixedly connected to a combustion chamber (504), the outer surface of the combustion chamber (504) is fixedly connected to a gas supply pipe (505), the gas supply pipe (505) is used to connect to a natural gas supply device, the gas supply pipe (505) is in a communicating state with the high temperature chamber (503), the inner surface of the preheating chamber (507) is fixedly connected to a heating plate (508), the high temperature chamber (503), the cooling chamber (506) and the preheating chamber (507) form a complete circular ring, the high temperature chamber (503), the cooling chamber (506) and the preheating chamber (507) are evenly arranged, and the communicating port (414) is located at the inner side of the high temperature chamber (503), the cooling chamber (506) and the preheating chamber (507).

6. The annular reduction chamber suitable for the production of reduced iron powder according to claim 5, characterized in that: The dust collector (601) input end is fixedly connected to a collecting pipe (603), and the collecting pipe (603) is fixedly connected to the top of the high-temperature chamber (503). The dust collector (601) output end is fixedly connected to a delivery pipe (606), and the end face of the delivery pipe (606) is fixedly connected to the top of the gas storage tank (602). The outer surface of the gas storage tank (602) is fixedly connected to an exhaust pipe (604), and a control valve (605) is provided inside the exhaust pipe (604).

7. The annular reduction chamber suitable for the production of reduced iron powder according to claim 6, characterized in that: The air pump (608) input end is fixedly connected to a first connecting pipe (607), the first connecting pipe (607) is fixedly connected to the air storage tank (602), and the air pump (608) output end is fixedly connected to a second connecting pipe (609), the second connecting pipe (609) is fixedly connected to the preheating chamber (507).

8. The annular reduction chamber suitable for the production of reduced iron powder according to claim 7, characterized in that: A first electric telescopic rod (702) is fixedly connected to the bottom of the fixing frame (701); a push plate (703) is fixedly connected to the lower end surface of the first electric telescopic rod (702); two groups of push rods (704) are symmetrically fixedly connected to the bottom of the push plate (703); a cover plate (705) is fixedly connected between the lower end surfaces of the two groups of push rods (704); the cover plate (705) is located above the reduction chamber body (410); and a cross section of the cover plate (705) is larger than a cross section of the reduction chamber body (410).

9. The annular reduction chamber suitable for the production of reduced iron powder according to claim 8, characterized in that: The bottom of the cover plate (705) is symmetrically fixedly connected with mounting rods (710), a fixing ring (711) is fixedly connected between the lower end surfaces of the two mounting rods (710), a refractory tank (712) is fixedly connected to the inner surface of the fixing ring (711), and a separation tank (713) is fixedly connected to the inner bottom of the refractory tank (712).

10. The annular reduction chamber suitable for the production of reduced iron powder according to claim 9, characterized in that: The top of the cover plate (705) is provided with three slots (706); the bottom of the push plate (703) is fixedly connected to a second electric telescopic rod (707); the lower end surface of the second electric telescopic rod (707) is fixedly connected to a circular plate (708); the cross section of the circular plate (708) is smaller than the cross section of the cover plate (705); the circular plate (708) is located above the cover plate (705); the bottom of the circular plate (708) is fixedly connected to three baffles (709); The outer surface of the baffle (709) is plugged into the inner surface of the slot (706); the baffle (709) is located inside the reduction chamber body (410); the outer surface of the baffle (709) is in contact with the inner surface of the reduction chamber body (410); the baffle (709) is used to divide the interior of the reduction chamber body (410) into three independent spaces; the baffle (709) is matched with the positions of the preheating chamber (507), the cooling chamber (506) and the high temperature chamber (503).

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