Pickling filter cake roasting device for steel mill

Abstract

The invention discloses a steel mill pickling filter cake roasting device, and relates to the technical field of roasting, the steel mill pickling filter cake roasting device comprises a furnace body, the top and the bottom of the furnace body are respectively provided with a feeding valve pipe and a discharging valve pipe used for feeding and discharging materials, a furnace chamber used for roasting the materials is arranged in the furnace body, a furnace hearth is arranged in the furnace chamber, and the furnace hearth is used for receiving the materials for roasting operation; a vibration driving mechanism and a material driving mechanism are mounted in the furnace body; a driving rotating shaft is installed in the furnace body and controls the vibration driving mechanism and the material driving mechanism to operate at the same time. The vibration driving mechanism is installed in the furnace body and can drive the furnace hearth to vibrate, so that discharging in the furnace is convenient, material accumulation can be prevented, the roasting effect is guaranteed, the material driving mechanism and the vibration driving mechanism in the device are driven and controlled through the same driving rotating shaft, and therefore the operation frequencies of the material driving mechanism and the vibration driving mechanism are matched, and the roasting effect is improved. And the overall transferring and roasting speed of the materials can be adjusted according to actual roasting requirements, and the applicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of roasting furnaces, in particular to a steel plant pickling filter cake roasting device. Background Art

[0002] As is known to all, a roasting furnace refers to a device used for high-temperature treatment of materials, and is mainly used for the process of calcining or roasting ores, slag, powder materials, etc. A roasting furnace usually needs to provide high temperature and appropriate atmosphere to make the materials undergo chemical or physical changes to achieve the required product quality and performance. The roasting furnace is widely used in metallurgy, chemical industry, building materials and other industries, and is one of the important production equipment; The steel mill pickling filter cake roasting device uses pickling filter residue as raw material and uses a multi-stage furnace to oxidize and roast the material. The temperature, residence time and oxygen content of different layers in the multi-stage roasting furnace are effectively controlled in layers, so that a series of physical and chemical processes such as waste drying and metal oxidation occur, and the organic matter in the waste is oxidized and roasted, and the metal oxides in the filter cake are converted into a form that is easier to recover. The roasting temperature is controlled to inhibit the volatilization loss of some metals. The movement of materials in the existing multi-stage roasting furnace is usually achieved by the gravity of the material itself and the airflow in the furnace, that is, in the multi-stage roasting furnace, the material is placed in the furnace section equipped with a heatable source. Under normal circumstances, the material will gradually move with the rotation or tilting movement in the furnace. The purpose of this movement is to ensure that the material can be evenly heated, so as to achieve the desired heat treatment effect. However, for the pickling slag of the steel plant, due to the characteristics of the pickling slag (easy to stick and accumulate), when it is roasted in the existing multi-stage roasting furnace, the slag often accumulates in the furnace chamber, affecting the roasting effect. In addition, in the existing multi-stage roasting furnace, the transfer of the pickling slag only relies on airflow and rotation, and it is easy for the slag to roll down in piles, which also affects its roasting effect. Summary of the invention

[0003] 1. Purpose of the invention In view of this, the purpose of the present invention is to propose a steel plant pickling filter cake roasting device, which can adjust the overall transfer and roasting speed of materials according to actual roasting needs, improve the applicability of the device, and can prevent material accumulation and ensure the roasting effect.

[0004] (II) Technical solution In order to achieve the above technical purpose, the present invention provides a steel plant pickling filter cake roasting device, which includes a furnace body, the top and bottom of the furnace body are respectively installed with a feed valve pipe and a discharge valve pipe for feeding and discharging materials, a furnace chamber for roasting materials is provided inside the furnace body, a furnace bed is installed in the furnace chamber, and the furnace bed is used to receive materials for roasting operations; A vibration driving mechanism and a material driving mechanism are installed inside the furnace body, wherein the vibration driving mechanism is installed below the furnace bed to drive the furnace bed to vibrate and assist in unloading, and the material driving mechanism is installed at the bottom of the furnace chamber to control the transfer of materials; A driving shaft is installed inside the furnace body, and the driving shaft passes through the vibration driving mechanism and the material driving mechanism at the same time, and controls the operation of the vibration driving mechanism and the material driving mechanism at the same time.

[0005] As a further description of the above technical solution: the top of the furnace bed adopts an inclined structure.

[0006] As a further description of the above technical solution: a plurality of fixing plates are installed on the inner wall of the furnace chamber below the furnace bed, and the fixing plates are fixedly connected to the bottom of the furnace bed via elastic components.

[0007] As a further description of the above technical solution: the vibration driving mechanism includes: A passive vibrator, which is fixedly mounted at the center of the furnace bed and movably sleeved on the driving shaft, and a top pressure opening is opened at the bottom of the passive vibrator along the circumferential direction; The active rotating member is fixedly sleeved on the driving shaft, the upper part of the active rotating member contacts the passive vibrating member, and the top of the active rotating member is provided with a roller that can be matched with the top pressure port.

[0008] As a further description of the above technical solution: the edge of the top pressure port adopts an arc-shaped transition, so that the movement of the roller is smoother.

[0009] As a further description of the above technical solution: there are multiple rollers, and the number of rollers is consistent with the number of top pressure ports, and they are aligned with each other. The positions of the multiple rollers are arranged to be distributed in a ring array with the driving shaft as the axis.

[0010] As a further description of the above technical solution: the upper surface of the active rotating part is provided with installation cavities at both ends of the roller, a roller mounting frame is movably installed in the installation cavity, a buffer spring is installed between the roller mounting frame and the inner wall of the installation cavity, and the two ends of the roller are respectively rotatably installed on the two roller mounting frames.

[0011] As a further description of the above technical solution: the furnace bed is composed of an upper inclined bed plate and a lower guard plate, wherein an installation space is formed between the inclined bed plate and the guard plate and the inner wall of the furnace chamber, and the vibration driving mechanism is located in the installation space.

[0012] As a further description of the above technical solution: a plurality of furnace chambers are arranged in sequence from top to bottom along the vertical direction inside the furnace body, adjacent furnace chambers are separated by furnace chamber partitions, and each of the furnace chamber partitions is provided with a material discharge port for connecting the upper and lower furnace chambers so that materials can enter the lower furnace chamber from the upper furnace chamber, and a heat supply and roasting device is installed in each of the furnace chambers, and a combustion gas pipeline is connected to the outside of the furnace body, and the combustion gas pipeline is connected to the heat supply and roasting device for roasting the material above the furnace bed.

[0013] As a further description of the above technical solution: each of the furnace chambers is provided with the vibration driving mechanism and the material driving mechanism, the material driving mechanism includes a rotating part and a shifting rod, the rotating part is fixedly mounted on the driving shaft, the shifting rod is fixedly mounted on the outer wall of the rotating part and extends along the radial direction to the inner wall of the furnace chamber.

[0014] As a further description of the above technical solution: there is a gap between the lower end of the furnace bed and the inner wall of the furnace chamber, and the material falls onto the furnace chamber partition through the gap, and the discharge port is located on the opposite side of the gap.

[0015] As a further description of the above technical solution: a gearbox and a variable frequency motor are installed at the bottom of the furnace body, the variable frequency motor is transmission-connected to the gearbox, and the output shaft of the gearbox is connected to the driving shaft.

[0016] As a further description of the above technical solution: an exhaust pipe and a smoke pipe are installed on the top of the furnace body, and a furnace chamber inspection door is installed at each furnace chamber on the furnace body.

[0017] In the above technical scheme, the present invention provides a steel plant pickling filter cake roasting device, which installs a vibration driving mechanism inside the furnace body. The vibration driving mechanism can drive the furnace bed to vibrate, making it convenient to unload materials in the furnace, preventing material accumulation, and ensuring the roasting effect. The driving mechanism and the vibration driving mechanism in the device are driven and controlled by the same driving shaft, so that the operating frequencies of the two are coordinated, that is, when the rotation speed of the driving shaft is increased, the vibration frequency of the vibration driving mechanism is accelerated, the material moves faster on the furnace bed, and the feeding speed of the driving mechanism is accelerated. When the rotation speed of the driving shaft is reduced, the vibration frequency of the vibration driving mechanism is reduced, the material moves slower on the furnace bed, and the feeding speed of the driving mechanism is slowed down. Therefore, the overall transfer and roasting speed of the material can be adjusted according to the actual roasting needs, thereby improving the applicability of the device; In the present invention, the structural design of the hearth and the vibration driving mechanism can buffer the impact force generated by the vibration of the hearth when it vibrates, thereby improving the service life of the hearth structure and the vibration driving mechanism and reducing the noise generated by the hearth when it vibrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 The overall structural schematic diagram of a steel plant pickling filter cake roasting device provided by the present invention; Figure 2 A schematic structural diagram of another perspective of a steel plant pickling filter cake roasting device provided by the present invention; Figure 3 A schematic diagram of the internal partial structure of a steel plant pickling filter cake roasting device provided by the present invention; Figure 4 A schematic diagram of the location of a feed opening in a pickling filter cake roasting device in a steel plant provided by the present invention; Figure 5 A schematic diagram of the structure inside a furnace body in a steel plant pickling filter cake roasting device provided by the present invention; Figure 6 A schematic diagram of the internal structure of each furnace chamber in a steel plant pickling filter cake roasting device provided by the present invention; Figure 7 A schematic diagram of the furnace structure of a steel plant pickling filter cake roasting device provided by the present invention; Figure 8 A schematic diagram of a vibration driving mechanism in a steel plant pickling filter cake roasting device provided by the present invention after assembly; Fig. 9 A schematic diagram of the structure of a steel plant pickling filter cake roasting device provided by the present invention when the vibration driving mechanism is separated; Fig.10 A schematic diagram of the structure of a passive vibrator in a steel plant pickling filter cake roasting device provided by the present invention; Fig.11 A schematic diagram of the structure of an active rotating part in a steel plant pickling filter cake roasting device provided by the present invention; Fig.12 A steel plant pickling filter cake roasting device provided by the present invention Fig.11 Schematic diagram of the enlarged structure of the middle A area; Fig.13 A schematic diagram of the structure of a material driving mechanism in a steel plant pickling filter cake roasting device provided by the present invention; Fig.14 The present invention provides a flow chart of a steel plant pickling filter cake roasting process.

[0020] Description of the drawings: 1. furnace body; 2. frequency conversion motor; 3. discharge valve pipe; 4. combustion gas pipeline; 5. feed valve pipe; 6. exhaust pipe; 7. smoke pipe; 8. gearbox; 9. furnace chamber inspection door; 10. furnace chamber; 11. driving shaft; 12. furnace bed; 120. inclined bed plate; 121. guard plate; 122. fixed plate; 123. elastic component; 13. furnace chamber partition; 130. discharge port; 14. heating and roasting device; 15. roasting partition cover; 16. material guide plate; 18. vibration driving mechanism; 180. passive vibration part; 1800. top pressure port; 181. active rotating part; 1810. roller; 1811. roller mounting frame; 1812. mounting cavity; 1813. buffer spring; 19. driving mechanism; 190. rotating part; 191. lever. DETAILED DESCRIPTION

[0021] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0022] Reference Figure 1-14 :This embodiment provides a technical solution: a steel plant pickling filter cake roasting device, comprising a furnace body 1, the top and bottom of the furnace body 1 are respectively installed with a feed valve pipe 5 and a discharge valve pipe 3 for feeding and discharging materials, a furnace chamber 10 for roasting materials is provided inside the furnace body 1, a furnace bed 12 is installed in the furnace chamber 10, and the furnace bed 12 is used to receive materials for roasting operations; A vibration driving mechanism 18 and a material driving mechanism 19 are installed inside the furnace body 1, wherein the vibration driving mechanism 18 is installed below the furnace bed 12 to drive the furnace bed 12 to vibrate and assist in unloading, and the material driving mechanism 19 is installed at the bottom of the furnace chamber 10 to control the transfer of materials; A driving shaft 11 is installed inside the furnace body 1 . The driving shaft 11 passes through the vibration driving mechanism 18 and the material driving mechanism 19 at the same time, and controls the operation of the vibration driving mechanism 18 and the material driving mechanism 19 at the same time.

[0023] It should be noted that the filter cake processing process is as follows (refer to Fig.14As shown): The loaded cold-rolled pickling filter cake is transported to the site and unloaded into the raw material warehouse, and is lifted by an electric hoist to the feed port of the dryer and falls into the dryer. After the material is heated by the jacket steam, it is preliminarily dehydrated. The dehydrated material falls into the top feed port of the buffer silo. The material falls into the buffer silo, which is equipped with a weighing module. After being pushed by the variable frequency inclined screw conveyor at the bottom of the buffer silo, the material falls into the feed port of the feed bucket elevator. The weighing signal of the buffer silo is fed back to the motor variable frequency of the inclined screw conveyor to achieve the purpose of accurately controlling the feeding. After being lifted by the bucket elevator, the material is lifted to the top of the roasting device, and slides into the roasting device through the two-stage feeding hammer flap. The steel mill pickling filter cake to be roasted enters the furnace chamber 10 and is roasted on the hearth 12; During the roasting process on the furnace bed 12, the driving shaft 11 controls the vibration driving mechanism 18 by rotation to make the furnace bed 12 vibrate, which can facilitate the unloading of materials and prevent the accumulation of materials from affecting the roasting effect. At the same time, the driving mechanism 19 is controlled by rotation to push the roasted materials under the furnace bed 12 out of the furnace chamber 10. The two operate simultaneously to realize the continuous roasting operation of the materials and improve the roasting efficiency. The vibration driving mechanism 18 and the driving mechanism 19 are driven by the same driving shaft 11, so that the operating frequencies of the two are coordinated, that is, when the rotation speed of the driving shaft 11 is increased, the vibration frequency of the vibration driving mechanism 18 is accelerated, the material moves faster on the furnace bed 12, and the feeding speed of the driving mechanism 19 is accelerated. When the rotation speed of the driving shaft 11 is reduced, the vibration frequency of the vibration driving mechanism 18 is reduced, the material moves slower on the furnace bed 12, and the feeding speed of the driving mechanism 19 is slowed down. Therefore, the overall transfer and roasting speed of the materials can be adjusted according to the actual roasting needs, thereby improving the applicability of the device.

[0024] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 3 As shown, in order to enable the material to move downward on the furnace bed 12, in this embodiment, the top of the furnace bed 12 adopts an inclined structure. Furthermore, a material guide plate 16 is installed below the feed valve pipe 5 inside the furnace chamber 10, which is used to guide the material to fall into the high end of the furnace bed 12 first, avoiding falling directly to the bottom of the furnace chamber 10, thereby ensuring the roasting effect.

[0025] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 5 - Figure 7 As shown, in order to enable the hearth 12 to vibrate in the vertical direction, in this embodiment, a plurality of fixing plates 122 are installed on the inner wall of the furnace chamber 10 below the hearth 12, and the fixing plates 122 are fixedly connected to the bottom of the hearth 12 by elastic components 123. Therefore, when the hearth 12 is subjected to force, it can vibrate in the vertical direction with a certain amplitude. Specifically, the elastic component 123 adopts a spring structure.

[0026] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 7 - Fig.12 As shown, in order to realize the control of the driving shaft 11 on the vibration driving mechanism 18 so that the vibration driving mechanism 18 can drive the hearth 12 to vibrate in the vertical direction, in this embodiment, the vibration driving mechanism 18 includes: The passive vibrator 180 is fixedly mounted at the center of the furnace bed 12 and movably sleeved on the driving shaft 11. A top pressure opening 1800 is provided at the bottom of the passive vibrator 180 along the circumferential direction. Specifically, the passive vibrator 180 is fixed to the furnace bed 12. The passive vibrator 180 and the furnace bed 12 are movably sleeved with the driving shaft 11 so that the up and down movement of the passive vibrator 180 and the furnace bed 12 does not affect the rotation of the driving shaft 11. The active rotating member 181 is fixedly sleeved on the driving shaft 11, and the upper part of the active rotating member 181 is in contact with the passive vibrator 180. A roller 1810 that can adapt to the top pressure port 1800 is installed on the top of the active rotating member 181. When the active rotating member 181 is driven by the driving shaft 11 to rotate, the roller 1810 performs a circular motion around the driving shaft 11 with the central axis of the driving shaft 11 as the axis. When the roller 1810 rotates to the position inside the top pressure port 1800, the passive vibrator 180 falls under the action of gravity and the elastic force of the elastic component 123 under the hearth 12. When the roller 1810 rotates out of the position inside the top pressure port 1800, the passive vibrator 180 and the hearth 12 are lifted up, and the cycle is repeated, thereby realizing the vibration control of the hearth 12 by the driving shaft 11.

[0027] This embodiment provides a steel plant pickling filter cake roasting device, such as Fig.10 As shown, in order to enable the roller 1810 to smoothly move out of the top pressure port 1800 when the driving shaft 11 controls the vibration of the furnace bed 12, in this embodiment, the edge of the top pressure port 1800 adopts an arc-shaped transition, so that the movement of the roller 1810 is smoother. Furthermore, there are multiple rollers 1810, and the number of rollers 1810 is consistent with the number of top pressure ports 1800, and they are aligned with each other. The positions of the multiple rollers 1810 are arranged to be distributed in a circular array with the driving shaft 11 as the axis. In this way, it can be ensured that all rollers 1810 move in a consistent manner, that is, they fall into or move out of the top pressure port 1800 at the same time, and can jointly bear the impact force caused by the vibration of the furnace bed 12, thereby improving the service life of the device.

[0028] This embodiment provides a steel plant pickling filter cake roasting device, such as Fig.11 - Fig.12As shown, in order to reduce the impact force and impact noise generated by the vibration of the vibration-driving mechanism 18 when the furnace bed 12 vibrates, in this embodiment, the upper surface of the active rotating member 181 is provided with installation cavities 1812 at both ends of the roller 1810, and a roller mounting frame 1811 is movably installed in the installation cavity 1812. A buffer spring 1813 is installed between the roller mounting frame 1811 and the inner wall of the installation cavity 1812, and the two ends of the roller 1810 are rotatably installed on the two roller mounting frames 1811 respectively. Therefore, when the furnace bed 12 vibrates, the roller 1810 can buffer the vibration with a certain amplitude under the elastic force of the buffer spring 1813, thereby achieving the effect of reducing the impact noise and buffering. Specifically, the roller mounting frame 1811 adopts an inverted T-shaped structure, and a plurality of buffer springs 1813 are equidistantly installed at the bottom of the roller mounting frame 1811 to improve the buffering effect.

[0029] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 5 - Figure 7 As shown, in order to protect the vibration-driving mechanism 18 in the furnace chamber 10, in this embodiment, the furnace bed 12 is composed of an upper inclined bed plate 120 and a lower guard plate 121, wherein an installation space is formed between the inclined bed plate 120 and the guard plate 121 and the inner wall of the furnace chamber 10, and the vibration-driving mechanism 18 is located in the installation space, so that the vibration-driving mechanism 18 can be isolated, thereby achieving the effect of protecting the vibration-driving mechanism 18.

[0030] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 5 - Figure 6 As shown, in order to improve the roasting effect of the material in the furnace chamber 10, in this embodiment, a plurality of furnace chambers 10 are arranged in sequence from top to bottom along the vertical direction inside the furnace body 1, and adjacent furnace chambers 10 are separated by furnace chamber partitions 13, and each furnace chamber partition 13 is provided with a discharge port 130 for connecting the upper and lower furnace chambers 10 so that the material can enter the lower furnace chamber 10 from the upper furnace chamber 10, and a heat supply roasting device 14 is installed in each furnace chamber 10, and a combustion gas pipeline 4 is connected to the outside of the furnace body 1, and the combustion gas pipeline 4 is connected to the heat supply roasting device 14 for roasting the material above the furnace bed 12. It should be noted that the heat supply roasting device 14 and the combustion gas pipeline 4 are both existing mature technologies, and their principles and installation can be seen in the multi-stage roasting furnace in the prior art, and no further elaboration is made here. Furthermore, the furnace chamber 10 is provided with a roasting hood 15 on the outside of the heat supply roasting device 14, which can protect the heat supply roasting device 14.

[0031] This embodiment provides a steel plant pickling filter cake roasting device, such as Fig.13As shown, in order to realize the transfer of materials in the furnace chamber 10, in this embodiment, each furnace chamber 10 is provided with a vibration driving mechanism 18 and a material driving mechanism 19, and the material driving mechanism 19 includes a rotating member 190 and a lever 191. The rotating member 190 is fixedly mounted on the driving shaft 11, and the lever 191 is fixedly mounted on the outer wall of the rotating member 190 and extends to the inner wall of the furnace chamber 10 along the radial direction. When the driving shaft 11 is rotating, the lever 191 is driven to rotate by the rotating member 190, so that the lever 191 can scrape the material located on the furnace chamber partition 13 to move, and when the material is moved to the position of the discharge port 130, the material falls into the next furnace chamber 10.

[0032] This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 3 - Figure 4 As shown, in order to ensure the transfer of materials between the furnace chambers 10, in this embodiment, there is a gap between the lower end of the furnace bed 12 and the inner wall of the furnace chamber 10, and the materials fall onto the furnace chamber partition 13 through the gap. The material discharge port 130 is located on the opposite side of the gap, so when the materials fall onto the furnace chamber partition 13, there will be a journey to prepare for entering the next furnace chamber 10, so that the materials can fully absorb heat and improve the subsequent roasting effect. This embodiment provides a steel plant pickling filter cake roasting device, such as Figure 1 - Figure 5 As shown, in order to realize the rotation control of the driving shaft 11, a gearbox 8 and a variable frequency motor 2 are installed at the bottom of the furnace body 1. The variable frequency motor 2 is connected to the gearbox 8 in transmission, and the output shaft of the gearbox 8 is connected to the driving shaft 11. When the variable frequency motor 2 is running, the driving shaft 11 rotates, thereby driving the vibration driving mechanism 18 and the material driving mechanism 19 to operate.

[0033] Furthermore, an exhaust pipe 6 and a smoke pipe 7 are installed on the top of the furnace body 1 , and a furnace chamber inspection door 9 is installed at each furnace chamber 10 on the furnace body 1 .

[0034] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. A steel mill pickling filter cake roasting device, comprising a furnace body (1), wherein a feed valve pipe (5) and a discharge valve pipe (3) for feeding and discharging materials are respectively installed at the top and bottom of the furnace body (1), characterized in that: The furnace body (1) is provided with a furnace chamber (10) for roasting materials, and a furnace bed (12) is installed in the furnace chamber (10). The furnace bed (12) is used to receive materials for roasting operations; A vibration-driving mechanism (18) and a material-driving mechanism (19) are installed inside the furnace body (1), wherein the vibration-driving mechanism (18) is installed below the furnace bed (12) and is used to drive the furnace bed (12) to vibrate and assist in unloading materials, and the material-driving mechanism (19) is installed at the bottom of the furnace chamber (10) and is used to control the transfer of materials; A driving shaft (11) is installed inside the furnace body (1), and the driving shaft (11) passes through the vibration driving mechanism (18) and the material driving mechanism (19) at the same time, and controls the operation of the vibration driving mechanism (18) and the material driving mechanism (19) at the same time.

2. A steel plant pickling filter cake roasting device according to claim 1, characterized in that: The top of the furnace bed (12) adopts an inclined structure.

3. A steel plant pickling filter cake roasting device according to claim 2, characterized in that: A plurality of fixing plates (122) are installed on the inner wall of the furnace chamber (10) below the furnace bed (12); the fixing plates (122) are fixedly connected to the bottom of the furnace bed (12) via elastic components (123).

4. A steel plant pickling filter cake roasting device according to claim 3, characterized in that: The vibration driving mechanism (18) comprises: A passive vibrator (180) is fixedly mounted at the center of the furnace bed (12) and movably sleeved on the driving shaft (11); a top pressure opening (1800) is provided at the bottom of the passive vibrator (180) along the circumferential direction; An active rotating member (181) is fixedly sleeved on the driving shaft (11), the upper portion of the active rotating member (181) is in contact with the passive vibrating member (180), and a roller (1810) that can be adapted to the top pressure port (1800) is installed on the top of the active rotating member (181).

5. A steel plant pickling filter cake roasting device according to claim 4, characterized in that: The upper surface of the active rotating member (181) is provided with mounting cavities (1812) at both ends of the roller (1810), a roller mounting frame (1811) is movably mounted in the mounting cavity (1812), a buffer spring (1813) is installed between the roller mounting frame (1811) and the inner wall of the mounting cavity (1812), and the two ends of the roller (1810) are rotatably mounted on the two roller mounting frames (1811), respectively.

6. A steel plant pickling filter cake roasting device according to claim 4, characterized in that: The furnace bed (12) is composed of an upper inclined bed plate (120) and a lower guard plate (121), wherein an installation space is formed between the inclined bed plate (120) and the guard plate (121) and an inner wall of the furnace chamber (10), and the vibration driving mechanism (18) is located in the installation space.

7. The steel mill pickling filter cake roasting device according to claim 1, characterized in that: A plurality of furnace chambers (10) are arranged in sequence from top to bottom along the vertical direction inside the furnace body (1), and adjacent furnace chambers (10) are separated by furnace chamber partitions (13), and each furnace chamber partition (13) is provided with a material discharge port (130) for connecting the upper and lower furnace chambers (10) so that materials can enter the lower furnace chamber (10) from the upper furnace chamber (10), and each furnace chamber (10) is installed with a heat supply and roasting device (14), and the furnace body (1) is connected to the outside with a combustion gas pipeline (4), and the combustion gas pipeline (4) is connected to the heat supply and roasting device (14) for roasting materials above the furnace bed (12).

8. A steel plant pickling filter cake roasting device according to claim 7, characterized in that: The vibration drive mechanism (18) and the material drive mechanism (19) are provided in multiple groups, respectively located in each furnace chamber (10), wherein the material drive mechanism (19) comprises a rotating member (190) and a lever (191), the rotating member (190) is fixedly mounted on the driving shaft (11), and the lever (191) is fixedly mounted on the outer wall of the rotating member (190) and extends along the radial direction to the inner wall of the furnace chamber (10).

9. A steel mill pickling filter cake roasting device according to claim 8, characterized in that: There is a gap between the lower end of the furnace bed (12) and the inner wall of the furnace chamber (10), and the material falls onto the furnace chamber partition (13) through the gap, and the material discharge port (130) is located on the opposite side of the gap.

10. A steel plant pickling filter cake roasting device according to any one of claims 1 to 9, characterized in that: A gearbox (8) and a variable frequency motor (2) are installed at the bottom of the furnace body (1); the variable frequency motor (2) is in transmission connection with the gearbox (8); and the output shaft of the gearbox (8) is connected to the driving shaft (11).

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