Heat energy circulation ironmaking furnace

Abstract

The invention relates to the technical field of ironmaking furnaces, in particular to a heat energy circulation ironmaking furnace which comprises a furnace body, a molten iron outlet and a sundry outlet are formed in the two sides of the furnace body respectively, and an exhaust pipe is fixedly installed at the top of the furnace body and used for exhausting combustion waste gas in the furnace body; the material conveying pipe is fixedly installed on the side face of the furnace body, the outer side of the material conveying pipe is sleeved with a rotating cylinder, a heat exchange space is formed between the rotating cylinder and the material conveying pipe, one end of the exhaust pipe is communicated with the interior of the heat exchange space, an air overflow hole is formed in the material conveying pipe, and the air overflow hole is used for guiding air in the heat exchange space to flow into the material conveying pipe; a high-temperature-resistant air blower is arranged at the end, away from the furnace body, of the conveying pipe. The rotating cylinder is arranged on the outer side of the conveying pipe, a heat exchange space is formed between the rotating cylinder and the conveying pipe, coke located in the conveying pipe can be preheated, and the situation that the temperature difference between the coke and the interior of the furnace body is too large, and constancy of the temperature in the furnace body is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of iron-making furnaces, and in particular to a thermal energy circulation iron-making furnace. Background Art

[0002] The working principle of the thermal energy circulation iron-making furnace is mainly that after the iron-making furnace is ignited, the heat energy and carbon monoxide generated in the furnace are collected by the recovery hood; then the recovered heat energy and carbon monoxide are introduced into the high-temperature resistant water turbine blower through the pipeline, and then the blower is driven by an electric motor to blow the heated air (containing carbon monoxide) into the furnace, providing the required high-temperature environment for the reduction reaction of the iron ore. In this process, the iron ore reacts with carbon monoxide at high temperature to generate metallic iron and carbon dioxide; during the whole process, heat energy is continuously recovered, transferred and reused to form a heat energy cycle, realizing continuous iron-making operations, and achieving the goals of heat energy recycling and energy conservation and emission reduction by recycling and utilizing the heat energy generated in the iron-making process.

[0003] Usually, coke needs to be added as fuel in this process to make the combustion inside the iron-making furnace more vigorous. However, directly supplying coke at room temperature into the iron-making furnace will cause the local temperature inside the furnace to drop, which will change the constant temperature inside the iron-making furnace and affect the various reactions inside the iron-making furnace. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a thermal energy circulation iron-making furnace, which can effectively solve the problem in the prior art that when coke is supplied into the iron-making furnace, the local temperature inside the iron-making furnace will be reduced, which will affect the constancy of the internal temperature of the iron-making furnace.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a thermal energy circulation ironmaking furnace, comprising a furnace body, wherein two sides of the furnace body are respectively provided with a molten iron outlet and a miscellaneous material outlet, and an exhaust pipe is fixedly installed on the top of the furnace body, and the exhaust pipe is used to discharge the combustion waste gas inside the furnace body;

[0009] A feed pipe is fixedly mounted on the side of the furnace body, one end of which extends above the furnace body and is used to transport coke to the interior of the furnace body. A rotating cylinder is sleeved on the outer side of the feed pipe, and a heat exchange space is formed between the rotating cylinder and the feed pipe. One end of the exhaust pipe is connected to the interior of the heat exchange space. An overflow hole is provided on the feed pipe, and the overflow hole is used to guide the gas inside the heat exchange space to flow into the feed pipe.

[0010] Wherein, a high temperature resistant blower is arranged at one end of the conveying pipe away from the furnace body, and the high temperature resistant blower is used to supply the gas inside the heat exchange space to the inside of the furnace body.

[0011] Furthermore, a support frame is provided on the side of the furnace body, a mounting platform is fixedly installed above the support frame, the feed pipe is fixedly installed on the mounting platform, the high temperature resistant blower is fixedly installed on the mounting platform, one end of the high temperature resistant blower is connected to the interior of the heat exchange space through a connecting pipe, and the other end of the high temperature resistant blower is connected to the interior of the furnace body through a conveying pipe.

[0012] Furthermore, it also includes an annular tube, which is fixedly installed on the outside of the furnace body, the upper end of the annular tube is connected to the lower end of the conveying pipe, and a plurality of hot air pipes are distributed in a circular shape below the annular tube, and the plurality of hot air pipes supply high-temperature gas from all around the furnace body to the inside of the furnace body.

[0013] Furthermore, at least one pair of spiral pipes is fixedly installed on the outer wall of the feed pipe, and the side of the spiral pipe facing the inner wall of the rotating cylinder is in contact with the rotating cylinder. The spiral pipe is spirally wound around the outer side of the feed pipe, and a spiral channel for hot air flow to pass through is formed between each pair of spiral pipes. One end of the exhaust pipe extends into the spiral channel and is connected to the inside of the spiral channel.

[0014] Furthermore, the interior of the spiral pipe is hollow, an air intake blower is fixedly installed on the mounting platform, an oxygen pipe is provided at the air outlet of the air intake blower, the other end of the oxygen pipe extends from the side of the rotating cylinder to between the rotating cylinder and the feed pipe, and is respectively connected to the interior of each spiral pipe, and the oxygen pipe is used to supply oxygen to the interior of the spiral pipe.

[0015] Furthermore, a gear is fixedly mounted on the outer side of the rotating cylinder, a rotating motor is fixedly mounted on the mounting platform, the rotating motor is transmission-connected with the gear, and the rotating motor is used to drive the gear and the rotating cylinder to rotate.

[0016] Furthermore, a connecting plate is fixedly installed on the outer side of the feed pipe, and the connecting plate is located on the side of the spiral pipe away from the furnace body. The connecting plate is provided with a flow hole for hot air flow to pass through. A rotating plate for adjusting the gas flow at the flow hole is fixedly installed on the inner wall of the rotating cylinder, and a limiting hole is provided on the rotating plate, and the limiting hole is smaller than the flow hole.

[0017] Furthermore, a rotating shaft is rotatably installed inside the feed pipe, a spiral blade is fixedly installed on the outer side of the rotating shaft, a driving motor for driving the rotating shaft to rotate is provided on the mounting platform, a feed box is provided at one end of the feed pipe away from the furnace body, and the rotating shaft and the spiral blade both pass through the feed box.

[0018] Beneficial Effects

[0019] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. The present invention forms a heat exchange space between the rotating cylinder and the feed pipe by sleevedly arranging a rotating cylinder on the outer side of the feed pipe. After the exhaust pipe extracts the high-temperature airflow from the inside of the furnace body, it is introduced into the heat exchange space, so that the feed pipe can be heated, and then the coke inside the feed pipe can be preheated, so as to avoid excessive temperature difference between the coke and the inside of the furnace body, which affects the constant temperature inside the furnace body.

[0021] 2. In the present invention, a pair of spiral pipes are arranged on the outside of the feed pipe. When high-temperature gas is supplied to the inside of the heat exchange space, the high-temperature gas directly enters between the two spiral pipes, so that the high-temperature gas can exchange heat with the outer wall of the spiral pipe and the outer wall of the feed pipe at the same time. The spiral pipes are spirally distributed on the outside of the feed pipe, which can increase the contact area between the high-temperature gas and the spiral pipes, increase the efficiency of heat exchange, and more efficiently heat the coke inside the feed pipe to a smaller temperature difference with the inside of the furnace body, so that the temperature inside the furnace body is more constant.

[0022] 3. In the present invention, by setting the interior of the spiral pipe to a vacuum and using an air intake blower to supply air to the interior of the spiral pipe, the oxygen inside the spiral pipe will be heated during the heating of the spiral pipe, and the oxygen supplied to the interior of the furnace body can be preheated in advance, which can reduce the temperature difference between the oxygen supplied from the outside and the interior of the furnace body, and can avoid large changes in the local temperature of the furnace body during the process of supplying oxygen, so as to maintain the constant temperature of the interior of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a side view of the furnace body of the present invention in a cut-away state;

[0026] Figure 3 It is a schematic diagram of the installation structure on the installation platform of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal installation structure of the rotating drum of the present invention;

[0028] Figure 5 It is an exploded view of the rotating drum and the material conveying pipe of the present invention;

[0029] Figure 6 It is a schematic diagram of the overall structure of the connecting disk and the rotating disk of the present invention;

[0030] Figure 7 It is an exploded view of the rotating drum, rotating shaft and material conveying pipe of the present invention.

[0031] The numbers in the figure represent:

[0032] 1. Furnace body; 11. Exhaust pipe; 12. Molten iron outlet; 13. Miscellaneous material outlet; 14. Hot air pipe; 2. Feed pipe; 201. Overflow hole; 21. Feed box; 22. Driving motor; 23. Spiral pipe; 24. Rotating shaft; 25. Spiral blade; 26. Connecting plate; 2601. Flow through hole;

[0033] 3. Rotating cylinder; 31. Gear; 32. Rotating disk; 3201. Restricting through hole; 4. Mounting platform; 41. Air intake blower; 411. Oxygen pipeline; 42. Rotating motor; 43. High temperature resistant blower; 431. Connecting pipe; 432. Delivery pipe; 5. Annular pipe; 6. Support frame. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] When a heat energy circulation ironmaking furnace is used, in order to ensure continuous combustion inside the ironmaking furnace, coke is usually added to the ironmaking furnace many times during the ironmaking process.

[0037] To this end, an embodiment of the present invention provides a thermal energy circulation ironmaking furnace, the purpose of which is at least to preheat the coke inside the conveying pipe 2 during the conveying process by heating the outer wall of the conveying pipe 2, thereby reducing the temperature difference between the coke and the inside of the furnace body 1, and more conveniently maintaining the constant temperature inside the furnace body 1.

[0038] Embodiment: A heat energy circulation ironmaking furnace, such as Figure 1-Figure 2As shown, it comprises a furnace body 1, and a molten iron outlet 12 and a miscellaneous material outlet 13 are respectively arranged on both sides of the furnace body 1, and an exhaust pipe 11 is fixedly installed on the top of the furnace body 1, and the exhaust pipe 11 is used to discharge the combustion exhaust gas inside the furnace body 1;

[0039] The feed pipe 2 is fixedly mounted on the side of the furnace body 1, with one end extending above the furnace body 1, and is used to transport coke to the interior of the furnace body 1. A rotating cylinder 3 is sleeved on the outer side of the feed pipe 2, and a heat exchange space is formed between the rotating cylinder 3 and the feed pipe 2. One end of the exhaust pipe 11 is connected to the interior of the heat exchange space. An overflow hole 201 is provided on the feed pipe 2, and the overflow hole 201 is used to guide the gas inside the heat exchange space to flow into the feed pipe 2.

[0040] A high temperature resistant blower 43 is provided at one end of the feed pipe 2 away from the furnace body 1 , and the high temperature resistant blower 43 is used to supply the gas inside the heat exchange space to the inside of the furnace body 1 .

[0041] In the present invention, a rotating cylinder 3 is sleeved on the outer side of the feed pipe 2 to form a heat exchange space between the rotating cylinder 3 and the feed pipe 2. After the exhaust pipe 11 extracts the high-temperature airflow from the inside of the furnace body 1, it is introduced into the heat exchange space, so that the feed pipe 2 can be heated, and then the coke located inside the feed pipe 2 can be preheated, thereby avoiding excessive temperature difference between the coke and the inside of the furnace body 1, which affects the constant temperature of the furnace body 1.

[0042] It should be noted that the exhaust pipe 11 is connected to the inside of the heat exchange space from the side of the feed pipe 2 close to the furnace body 1, which can minimize the temperature difference between the coke that is about to enter the furnace body 1 and the inside of the furnace body, and can further maintain the constant temperature inside the furnace body. An overflow hole 201 is set on the top of the feed pipe 2. When the air pressure between the rotating drum 3 and the feed pipe 2 is too high, the air can enter the feed pipe 2 through the overflow hole 201. The high-temperature airflow entering the feed pipe 2 can also directly contact the coke and take away the volatile moisture on the coke.

[0043] Furthermore, if Figure 1 , Figure 2 As shown, a support frame 6 is provided on the side of the furnace body 1, and a mounting platform 4 is fixedly installed above the support frame 6. The feed pipe 2 is fixedly installed on the mounting platform 4, and the high temperature resistant blower 43 is fixedly installed on the mounting platform 4. One end of the high temperature resistant blower 43 is connected to the interior of the heat exchange space through a connecting pipe 431, and the other end of the high temperature resistant blower 43 is connected to the interior of the furnace body 1 through a delivery pipe 432.

[0044] The high temperature resistant blower 43 can extract the high temperature gas in the heat exchange space and supply it to the inside of the furnace body 1, so that the high temperature gas can be continuously circulated.

[0045] Furthermore, if Figure 1 , Figure 2 As shown, it also includes an annular tube 5, which is fixedly installed on the outside of the furnace body 1. The upper end of the annular tube 5 is connected to the lower end of the conveying pipe 432. A plurality of hot air pipes 14 are distributed in a circular shape below the annular tube 5. The plurality of hot air pipes 14 supply high-temperature gas to the inside of the furnace body 1 from all sides of the furnace body 1.

[0046] Among them, by setting an annular tube 5 and setting a plurality of hot air pipes 14 in a ring shape below the annular tube 5, after the high-temperature air is supplied to the inside of the annular tube 5, it will enter the inside of the furnace body 1 from the four sides of the furnace body 1 along the plurality of hot air pipes 14, so that the oxygen and high-temperature gas entering the furnace body 1 can be more uniform, and the fuel inside the furnace body 1 can be burned more evenly.

[0047] Furthermore, if Figure 4 , Figure 5 As shown, at least one pair of spiral pipes 23 are fixedly installed on the outer wall of the feed pipe 2. The spiral pipes 23 are in contact with the rotating cylinder 3 on one side facing the inner wall of the rotating cylinder 3. The spiral pipes 23 are spirally wound around the outer side of the feed pipe 2. A spiral channel for hot air flow is formed between each pair of spiral pipes 23. One end of the exhaust pipe 11 extends into the spiral channel and is connected to the inside of the spiral channel.

[0048] Among them, by arranging a pair of spiral pipes 23 on the outside of the feed pipe 2, when high-temperature gas is supplied to the inside of the heat exchange space, the high-temperature gas directly enters between the two spiral pipes 23, so that the high-temperature gas can simultaneously exchange heat with the outer wall of the spiral pipe 23 and the outer wall of the feed pipe 2. The spiral pipes 23 are spirally distributed on the outside of the feed pipe 2, which can increase the contact area between the high-temperature gas and the spiral pipes 23, increase the efficiency of heat exchange, and more efficiently heat the coke inside the feed pipe 2 to a smaller temperature difference with the inside of the furnace body, so that the temperature inside the furnace body 1 is more constant.

[0049] Furthermore, if Figure 4 , Figure 5 As shown, the interior of the spiral pipe 23 is hollow, an air intake blower 41 is fixedly installed on the mounting platform 4, an oxygen pipe 411 is provided at the air outlet of the air intake blower 41, the other end of the oxygen pipe 411 extends from the side of the rotating cylinder 3 to between the rotating cylinder 3 and the feed pipe 2, and is respectively connected to the interior of each spiral pipe 23, and the oxygen pipe 411 is used to supply oxygen to the interior of the spiral pipe 23.

[0050] Among them, by setting the interior of the spiral pipe 23 to a vacuum and using the intake blower 41 to supply air to the interior of the spiral pipe 23, the oxygen inside the spiral pipe 23 will be heated during the heating of the spiral pipe 23, and the oxygen supplied to the interior of the furnace body 1 can be preheated in advance, which can reduce the temperature difference between the oxygen supplied from the outside and the interior of the furnace body 1, and can avoid large changes in the local temperature in the furnace body 1 during the process of supplying oxygen, so as to maintain the constant temperature inside the furnace body 1.

[0051] Furthermore, if Figure 4 As shown, a gear 31 is fixedly mounted on the outer side of the rotating cylinder 3, and a rotating motor 42 is fixedly mounted on the mounting platform 4. The rotating motor 42 is transmission-connected with the gear 31, and is used to drive the gear 31 and the rotating cylinder 3 to rotate.

[0052] Among them, by arranging a rotating motor 42 and a gear 31 on the outside of the rotating cylinder 3, when it is necessary to clean the inside of the rotating cylinder 3, the part of the spiral pipe 23 that is in contact with the inner wall of the rotating cylinder 3 will scrape off the combustion smoke attached to the inner wall of the rotating cylinder 3, so that the inside of the rotating cylinder 3 can be cleaned; in actual use, an openable dust exhaust window is also provided on the outside of the rotating cylinder 3, and the cleaned smoke can be conveniently discharged from the rotating cylinder 3 when cleaning the rotating cylinder 3.

[0053] Furthermore, if Figure 5 , Figure 6 As shown, a connecting plate 26 is fixedly installed on the outer side of the conveying pipe 2, and the connecting plate 26 is located on the side of the spiral pipe 23 away from the furnace body 1. The connecting plate 26 is provided with a flow hole 2601 for hot air flow to pass through. A rotating plate 32 for adjusting the gas flow at the flow hole 2601 is fixedly installed on the inner wall of the rotating cylinder 3, and a limiting hole 3201 is provided on the rotating plate 32, and the limiting hole 3201 is smaller than the flow hole 2601.

[0054] Among them, by providing the connection disk 26 and the rotating disk 32, during the heat conduction process, the rotating cylinder 3 can be driven to rotate so that the rotating disk 32 blocks the outer side of the flow through hole 2601 on the connection disk 26, so that the ratio of the high-temperature gas passing through the flow through hole 2601 can be made smaller, and the excess high-temperature gas can enter the inside of the feed pipe 2 from the overflow hole 201 on the feed pipe 2 to heat the coke inside the feed pipe 2. The mixing ratio of the high-temperature gas and oxygen can be conveniently controlled according to the needs of furnace combustion to meet the needs of furnace combustion in different states (for example, during the ignition process, a large amount of oxygen supply is required, and at this time, the supply of high-temperature gas needs to be reduced and the supply of oxygen needs to be increased);

[0055] Furthermore, if Figure 7As shown, a rotating shaft 24 is rotatably installed inside the feed pipe 2, and a spiral blade 25 is fixedly installed on the outer side of the rotating shaft 24. A driving motor 22 for driving the rotating shaft 24 to rotate is provided on the mounting platform 4. A feed box 21 is provided at one end of the feed pipe 2 away from the furnace body 1, and the rotating shaft 24 and the spiral blade 25 both pass through the feed box 21.

[0056] Working principle: During use, the high-temperature gas on the top of the furnace body 1 enters into the spiral channel between the two spiral pipes 23 inside the heat exchange space along the exhaust pipe 11, and the high-temperature air directly contacts the outer wall of the spiral pipe 23 and the feed pipe 2, and heat exchange occurs, so as to preheat the room-temperature oxygen inside the spiral pipe 23 and the room-temperature coke inside the feed pipe 2, so that the oxygen and coke that are about to enter the furnace body 1 can be heated to a range close to the temperature inside the furnace body 1, so as to avoid excessive changes in local temperature differences in the furnace body 1 during the process of adding oxygen or coke, and maintain a constant temperature inside the furnace body 1.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal energy circulation ironmaking furnace, It is characterized in that include: A furnace body (1), wherein a molten iron outlet (12) and a miscellaneous material outlet (13) are respectively arranged on both sides of the furnace body (1), and an exhaust pipe (11) is fixedly installed on the top of the furnace body (1), and the exhaust pipe (11) is used to discharge combustion waste gas inside the furnace body (1); A feed pipe (2) is fixedly mounted on the side of the furnace body (1), one end of which extends above the furnace body (1) and is used to transport coke to the interior of the furnace body (1); a rotating cylinder (3) is sleeved on the outer side of the feed pipe (2); a heat exchange space is formed between the rotating cylinder (3) and the feed pipe (2); one end of the exhaust pipe (11) is connected to the interior of the heat exchange space; an overflow hole (201) is provided on the feed pipe (2); the overflow hole (201) is used to guide the gas inside the heat exchange space to flow into the feed pipe (2); A high temperature resistant blower (43) is provided at one end of the feed pipe (2) away from the furnace body (1), and the high temperature resistant blower (43) is used to supply the gas inside the heat exchange space to the inside of the furnace body (1).

2. A thermal energy circulation ironmaking furnace according to claim 1, It is characterized in that A support frame (6) is provided on the side of the furnace body (1), a mounting platform (4) is fixedly installed above the support frame (6), the feed pipe (2) is fixedly installed on the mounting platform (4), the high temperature resistant blower (43) is fixedly installed on the mounting platform (4), one end of the high temperature resistant blower (43) is connected to the interior of the heat exchange space through a connecting pipe (431), and the other end of the high temperature resistant blower (43) is connected to the interior of the furnace body (1) through a delivery pipe (432).

3. A thermal energy circulation ironmaking furnace according to claim 2, It is characterized in that It also includes an annular tube (5), the annular tube (5) being fixedly mounted on the outside of the furnace body (1), the upper end of the annular tube (5) being connected to the lower end of the delivery tube (432), and a plurality of hot air tubes (14) being distributed in a circular shape below the annular tube (5), the plurality of hot air tubes (14) respectively supplying high-temperature gas from all four sides of the furnace body (1) to the interior of the furnace body (1).

4. A thermal energy circulation ironmaking furnace according to claim 2, It is characterized in that At least one pair of spiral pipes (23) is fixedly mounted on the outer wall of the feed pipe (2); the side of the spiral pipe (23) facing the inner wall of the rotating cylinder (3) is in contact with the rotating cylinder (3); the spiral pipe (23) is spirally wound around the outer side of the feed pipe (2); a spiral channel for hot air flow to pass through is formed between each pair of spiral pipes (23); one end of the exhaust pipe (11) extends into the spiral channel and is connected to the inside of the spiral channel.

5. A thermal energy circulation ironmaking furnace according to claim 4, It is characterized in that The interior of the spiral pipe (23) is hollow, an air intake blower (41) is fixedly mounted on the mounting platform (4), an oxygen pipe (411) is arranged at the air outlet of the air intake blower (41), the other end of the oxygen pipe (411) extends from the side of the rotating cylinder (3) to between the rotating cylinder (3) and the feed pipe (2), and is respectively connected to the interior of each spiral pipe (23), and the oxygen pipe (411) is used to supply oxygen into the interior of the spiral pipe (23).

6. A thermal energy circulation ironmaking furnace according to claim 5, It is characterized in that A gear (31) is fixedly mounted on the outer side of the rotating cylinder (3), and a rotating motor (42) is fixedly mounted on the mounting platform (4). The rotating motor (42) is transmission-connected to the gear (31), and the rotating motor (42) is used to drive the gear (31) and the rotating cylinder (3) to rotate.

7. A thermal energy circulation ironmaking furnace according to claim 6, It is characterized in that A connecting plate (26) is fixedly mounted on the outer side of the feed pipe (2), and the connecting plate (26) is located on the side of the spiral pipe (23) away from the furnace body (1). A flow hole (2601) for allowing hot air to pass through is provided on the connecting plate (26). A rotating plate (32) for adjusting the gas flow at the flow hole (2601) is fixedly mounted on the inner wall of the rotating cylinder (3), and a limiting hole (3201) is provided on the rotating plate (32), and the limiting hole (3201) is smaller than the flow hole (2601).

8. The thermal energy circulation ironmaking furnace according to claim 1, It is characterized in that A rotating shaft (24) is rotatably mounted inside the feed pipe (2), a spiral blade (25) is fixedly mounted on the outer side of the rotating shaft (24), a driving motor (22) for driving the rotating shaft (24) to rotate is disposed on the mounting platform (4), a feeding box (21) is disposed at one end of the feed pipe (2) away from the furnace body (1), and both the rotating shaft (24) and the spiral blade (25) pass through the feeding box (21).

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