Magnetic enhanced separation of hot rolled oil sludge liquefaction products

Abstract

The utility model discloses a magnetic reinforced separation's steel rolling oil sludge hot liquefaction product processing device, including support frame, still including the electrically conductive slip ring of installation on support frame, the rotary rod of electrically conductive slip ring rotation connection on support frame. Through the first drive unit drive rotary rod and stainless steel cylinder synchronous rotation, make the residue that is transported to the upper surface of stainless steel cylinder under the gravity even cover its surface, with the help of neodymium iron boron permanent magnet sheet fixed in stainless steel cylinder inner wall produces strong magnetic field high -efficient adsorption iron particle in residue and rotates with the cylinder body, when the stainless steel cylinder area of adsorbing iron particle turns to below, through bolt detachable installation scraper can force scrape down iron particle and make it fall into iron particle collection hopper, whole process does not need to rely on manual cleaning, avoids the problem of low efficiency and micro iron filings residue of manual operation, effectively promotes iron particle recovery rate, significantly reduces the difficulty and cost of solid waste subsequent processing, improves the overall processing efficiency of steel rolling oil sludge hot liquefaction product.

Description

Technical Field

[0001] This utility model relates to the field of processing device technology, specifically to a magnetically enhanced separation device for processing the thermal liquefaction products of steel rolling sludge. Background Technology

[0002] The magnetically enhanced separation steel rolling sludge hydrothermal liquefaction product treatment device is an environmentally friendly equipment that integrates thermochemical conversion and magnetic field separation technologies. It is specifically designed to treat oily sludge (steel rolling sludge) generated during the steel rolling process. After the pyrolysis products are discharged, they are conveyed to a stainless steel conveyor belt via a conveyor auger. The magnetic field on the stainless steel conveyor belt then adsorbs iron particles from the pyrolysis residue, separating the iron particles from the carrier and collecting them.

[0003] In the existing technology, in the magnetic separation process of steel rolling sludge hydrothermal products, although traditional magnetic separation conveyor belts can achieve the initial adsorption of iron particles, the subsequent cleaning process requires manual scraping of the adsorbed iron particles one by one along the surface of the conveyor belt with a hand-held scraper. This not only involves scattered cleaning actions but also requires frequent machine stops. At the same time, for fine iron filings with a diameter of <0.1mm, they are easily embedded in the weave gaps or surface textures of the conveyor belt, making it difficult for manual scraping to clean them thoroughly. This easily leads to residues, reducing the recovery rate of iron particles and contaminating the non-magnetic residues that are subsequently separated, increasing the difficulty and cost of subsequent solid waste treatment. Utility Model Content

[0004] The purpose of this invention is to provide a magnetically enhanced separation device for treating the thermal liquefaction products of steel rolling sludge, in order to solve the problems mentioned in the background art, such as the need for frequent shutdowns and low efficiency of manual cleaning of traditional magnetic separation conveyor belts in the magnetic separation of thermal liquefaction products of steel rolling sludge, and the easy retention of fine iron filings <0.1mm, which reduces iron recovery rate, pollutes residues, and increases solid waste treatment costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetically enhanced separation device for treating the thermal liquefaction products of rolling mill sludge, comprising a support frame, a conductive slip ring mounted on the support frame, a rotating rod rotatably connected to the support frame by the conductive slip ring, a stainless steel cylinder fixedly connected to the rotating rod, a first drive unit mounted on the support frame, a neodymium iron boron permanent magnet fixedly connected to the inner wall of the stainless steel cylinder, a vibration unit mounted on the rotating rod, a second drive unit mounted on the vibration unit, a scraper detachably mounted on the support frame by bolts, an iron particle collection hopper and a residue guiding unit fixedly connected to the support frame. The scraper is used to scrape off iron particles on the surface of the stainless steel cylinder, causing them to fall into the iron particle collection hopper. The first drive unit is used to drive the stainless steel cylinder and the rotating rod to rotate. The residue guiding unit is used to guide non-magnetic ash and organic matter on the surface of the stainless steel cylinder, facilitating their entry into subsequent cooling treatment.

[0006] Based on the preferred embodiment of this technical solution, the magnetic field strength of the neodymium iron boron permanent magnet sheet is 1.2 to 1.5 Tesla. Several neodymium iron boron permanent magnet sheets are provided, and several groups of neodymium iron boron permanent magnet sheets are arranged in a ring along the axial direction of the rotating rod. The polarities of two adjacent neodymium iron boron permanent magnet sheets are opposite. The opposite polarities of adjacent neodymium iron boron permanent magnet sheets are used to enhance the uniformity of the surface magnetic field.

[0007] In the preferred embodiment of this technical solution, the first drive unit is a first motor fixedly connected to the support frame, and the rotating rod is fixedly connected to the output end of the first motor.

[0008] According to the preferred embodiment of this technical solution, the vibration unit includes a hinge seat fixedly connected to one end of the rotating rod, a vibration rod rotatably connected to the hinge seat at one end, and a movable bracket rotatably connected to the other end of the vibration rod at one end. The second drive unit is used to drive the movable bracket and thus drive the vibration rod to perform periodic oscillation.

[0009] Based on the preferred embodiment of this technical solution, three sets of vibrating rods and movable supports are provided. The three sets of vibrating rods and movable supports are symmetrically distributed in a ring on the rotating rod, and there are no neodymium iron boron permanent magnet sheets at the contact positions between the three sets of vibrating rods and the stainless steel cylinder.

[0010] In a preferred embodiment of this technical solution, the second drive unit includes a second motor fixedly connected to the rotating rod, a rotating disk fixedly connected to the output end of the second motor, and a light rod fixedly connected to the rotating disk. The other end of the movable bracket is rotatably connected to the light rod, and the second motor is used to rotate the rotating disk.

[0011] In this preferred embodiment of the technical solution, the conductive slip ring is configured with a fixed end and a rotating end. The fixed end of the conductive slip ring is electrically connected to an external power source, and the rotating end of the conductive slip ring is electrically connected to a second motor. Through the conductive slip ring, when the rotating rod drives the stainless steel cylinder to rotate, the external power source can continuously transmit current to the second motor, driving the vibrating rod to oscillate periodically.

[0012] Based on the preferred embodiment of this technical solution, the residue guiding unit includes a guiding frame fixedly connected to a support frame, a first mounting frame, a second mounting frame, and a third mounting frame that are detachably mounted on the guiding frame in a stepped manner via elastic clips, a first neodymium iron boron permanent magnet rod rotatably connected to the first mounting frame, a second neodymium iron boron permanent magnet rod rotatably connected to the second mounting frame, a third neodymium iron boron permanent magnet rod rotatably connected to the third mounting frame, and a stainless steel sleeve that is fixedly connected to the first neodymium iron boron permanent magnet rod, the second neodymium iron boron permanent magnet rod, and the third neodymium iron boron permanent magnet rod in sequence. The first neodymium iron boron permanent magnet rod, the second neodymium iron boron permanent magnet rod, and the third neodymium iron boron permanent magnet rod are all arranged in three sets of magnetic grids to intercept ultrafine iron filings flowing with the residue. The stainless steel sleeve is used to prevent the residue from abrading the surface of the magnetic rod.

[0013] Based on the preferred embodiment of this technical solution, the magnetic field strength of the first, second, and third NdFeB permanent magnet rods is 1.8 Tesla, and the distance between the first NdFeB permanent magnet rods is 15 mm, with the installation height of the first mounting bracket being 2 / 3 of the depth of the flow guide; the distance between the second NdFeB permanent magnet rods is 8 mm, with the installation height being 1 / 2 of the depth of the flow guide; and the distance between the third NdFeB permanent magnet rods is 5 mm, with the installation height being 1 / 3 of the depth of the flow guide. All three NdFeB permanent magnet rods, with a magnetic field strength of 1.8 Tesla, are stronger than the magnetic field strength of NdFeB permanent magnet sheets with a magnetic field strength of 1.2 to 1.5 Tesla, and are therefore specifically designed for ultrafine iron filings.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The first drive unit drives the rotating rod to rotate synchronously with the stainless steel cylinder, so that the residue conveyed to the upper surface of the stainless steel cylinder is evenly covered by gravity. At the same time, the neodymium iron boron permanent magnet sheet fixed on the inner wall of the stainless steel cylinder generates a strong magnetic field to efficiently adsorb iron particles in the residue and rotate with the cylinder. When the stainless steel cylinder area adsorbing iron particles rotates to the bottom, the iron particles can be forcibly scraped off by the bolt-mounted scraper and fall into the iron particle collection hopper. The whole process does not require manual cleaning, which avoids the low efficiency of manual operation and the problem of fine iron filings residue. It effectively improves the iron particle recovery rate, significantly reduces the difficulty and cost of subsequent solid waste treatment, and improves the overall treatment efficiency of steel rolling sludge thermal liquefaction products.

[0015] 2. By setting a hinge seat on the rotating rod, the vibrating rod can rotate flexibly with the hinge seat as the fulcrum, avoiding jamming when the vibrating rod swings; the vibrating rod and the second drive unit are connected by a movable bracket, so that the power of the second drive unit can be smoothly transmitted to the vibrating rod, causing the vibrating rod to swing periodically; it can effectively loosen the iron particles accumulated on the surface of the stainless steel cylinder, prevent the iron particles from forming a dense thin shell that weakens the magnetic field adsorption force, and ensure that the subsequent scraper cleaning is more thorough.

[0016] 3. Three sets of permanent magnets form three magnetic grids, enabling secondary iron removal from residues during the flow guiding process. By setting different spacings of the permanent magnets (15mm, 8mm, 5mm) and installation heights (2 / 3, 1 / 2, 1 / 3 of the flow guide depth), a stepped interception structure is formed. This allows the residue to first pass through the coarse-spacing, high-position magnetic grids to intercept larger particles, and then through the fine-spacing, low-position magnetic grids to intercept smaller particles. This ensures effective iron removal while preventing residue from clogging the magnetic grids and affecting flow. This stepped design maximizes the interception of ultrafine iron filings, further improving the iron recovery rate and reducing waste and pollution caused by iron filings being discharged with the residue. It also intercepts ultrafine iron filings that are not adsorbed by the stainless steel cylinder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to this utility model. Figure 2 This is a schematic diagram of the conductive slip ring structure of this utility model; Figure 3 This is a schematic diagram of the first drive unit structure of this utility model; Figure 4 This is a schematic diagram of the vibration unit and the second drive unit of this utility model; Figure 5 This is a schematic diagram of the residue guiding unit structure of this utility model; Figure 6 This is a schematic diagram of the structure of the first mounting bracket, the second mounting bracket, and the third mounting bracket of this utility model.

[0018] In the diagram: 1. Support frame; 21. Conductive slip ring; 22. Rotating rod; 23. Stainless steel cylinder; 24. First motor; 25. Neodymium iron boron permanent magnet; 26. Scraper; 27. Iron particle collection hopper; 31. Hinge seat; 32. Second motor; 33. Rotating disk; 34. Smooth rod; 35. Movable bracket; 36. Vibrating rod; 41. Flow guide frame; 42. First mounting frame; 43. First neodymium iron boron permanent magnet rod; 44. Second mounting frame; 45. Second neodymium iron boron permanent magnet rod; 46. Third mounting frame; 47. Third neodymium iron boron permanent magnet rod; 48. Stainless steel sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-6This utility model provides an embodiment of a magnetically enhanced separation treatment device for thermal liquefaction products of rolling mill sludge, comprising a support frame 1, a conductive slip ring 21 mounted on the support frame 1, a rotating rod 22 rotatably connected to the support frame 1 by the conductive slip ring 21, a stainless steel cylinder 23 fixedly connected to the rotating rod 22, a first drive unit mounted on the support frame 1, a neodymium iron boron permanent magnet sheet 25 fixedly connected to the inner wall of the stainless steel cylinder 23, a vibration unit mounted on the rotating rod 22, a second drive unit mounted on the vibration unit, a scraper 26 detachably mounted on the support frame 1 by bolts, an iron particle collection hopper 27 fixedly connected to the support frame 1, and a residue guiding unit. The scraper 26 is used to scrape off iron particles from the surface of the stainless steel cylinder 23, causing them to fall into the iron particle collection hopper 27. 7. The first drive unit drives the stainless steel cylinder 23 and the rotating rod 22 to rotate. The residue guiding unit guides the non-magnetic ash and organic matter on the surface of the stainless steel cylinder 23 to facilitate subsequent cooling. The first drive unit drives the rotating rod 22 and the stainless steel cylinder 23 to rotate synchronously. The neodymium iron boron permanent magnet 25 on the inner wall of the stainless steel cylinder 23 generates a strong magnetic field, which allows the iron particles in the residue to be efficiently adsorbed on the surface of the stainless steel cylinder 23. The iron particles can be easily scraped off by the bolt-removable scraper 26 and fall into the iron particle collection hopper 27 without manual cleaning. At the same time, the residue guiding unit guides the non-magnetic ash and organic matter to enter the subsequent cooling. The whole process realizes the automatic separation of iron and residue, reduces manual intervention, improves processing efficiency, and reduces the operational difficulty of subsequent solid waste treatment.

[0021] The iron particle collection hopper 27 can also adopt other structures in the existing technology, and be replaced by an iron particle collection bag. The advantages of replacing the iron particle collection hopper 27 with an iron particle collection bag are: the cost of the collection bag material (such as wear-resistant canvas, flexible plastic) is lower than that of the metal hopper body, which can reduce the equipment manufacturing cost; and the collection bag can be folded and stored, taking up little space when empty. When the iron particles are full, a new bag can be directly removed and replaced without stopping the machine to clean the iron filings remaining on the inner wall of the hopper, reducing the downtime of the device operation.

[0022] The scraper 26 can also adopt other structures in the existing technology, such as replacing it with an elastic rubber scraper. The advantages of replacing the scraper 26 with an elastic rubber scraper are: the elastic rubber material can closely fit the surface of the stainless steel cylinder 23, and even if there is slight wear or texture on the cylinder surface, it can penetrate into the gaps to scrape away fine iron filings, resulting in more thorough cleaning; the soft properties can avoid scratching the surface of the stainless steel cylinder 23, reduce cylinder surface wear and subsequent uneven adsorption of iron particles caused by uneven cylinder surface.

[0023] Please see Figure 3A further solution based on this embodiment is as follows: the magnetic field strength of the NdFeB permanent magnet 25 is 1.2 to 1.5 Tesla. Several NdFeB permanent magnets 25 are arranged in a ring along the axial direction of the rotating rod 22, and adjacent NdFeB permanent magnets 25 have opposite polarities. This opposite polarity enhances the uniformity of the surface magnetic field. By setting the magnetic field strength of the NdFeB permanent magnets 25 to 1.2 to 1.5 Tesla, it is possible to ensure the uniformity of the magnetic field for most iron particles. It has effective adsorption force and avoids the mis-adsorption of non-magnetic impurities due to excessive magnetic field strength. By arranging several neodymium iron boron permanent magnet sheets 25 in a ring along the axial direction of the rotating rod 22, a stable magnetic field can be formed in each area of ​​the stainless steel cylinder 23 surface, and there are no adsorption blind spots. By designing that adjacent neodymium iron boron permanent magnet sheets 25 have opposite polarities, the uniformity of the magnetic field on the surface of the stainless steel cylinder 23 is further enhanced, so that iron particles at different positions can be evenly adsorbed, reducing iron filings residue caused by weak local magnetic fields and improving the adsorption coverage of iron particles.

[0024] Please see Figure 3 A further solution based on this embodiment is as follows: the first driving unit is a first motor 24 fixedly connected to the support frame 1, and the rotating rod 22 is fixedly connected to the output end of the first motor 24. By setting the first driving unit as the first motor 24 fixedly on the support frame 1, and the rotating rod 22 directly connected to the output end of the motor, the transmission structure is simplified, the use of intermediate transmission components such as gears and belts is reduced, and the risk of failure caused by wear or loosening of transmission components is reduced. By directly driving the rotating rod 22 by the motor, the rotation speed of the rotating rod 22 and the stainless steel cylinder 23 can be more stable, avoiding uneven coverage of residue on the surface of the stainless steel cylinder 23 due to speed fluctuations, ensuring consistent adsorption effect of iron particles. At the same time, the rotation speed can be easily controlled by the first motor 24 to rotate at low speed, thereby ensuring adsorption time.

[0025] Please see Figure 4 A further solution based on this embodiment is as follows: The vibration unit includes a hinge seat 31 fixedly connected to one end of the rotating rod 22, a vibration rod 36 rotatably connected to the hinge seat 31 at one end, and a movable bracket 35 rotatably connected to the other end of the vibration rod 36 at one end. The second drive unit is used to drive the movable bracket 35 to drive the vibration rod 36 to swing periodically. By setting the hinge seat 31 on the rotating rod 22, the vibration rod 36 can rotate flexibly with the hinge seat 31 as the fulcrum, avoiding jamming when the vibration rod 36 swings. The movable bracket 35 connects the vibration rod 36 and the second drive unit, so that the power of the second drive unit can be smoothly transmitted to the vibration rod 36, driving the vibration rod 36 to swing periodically. This can effectively loosen the iron particles accumulated on the surface of the stainless steel cylinder 23, prevent the iron particles from forming a dense thin shell that weakens the magnetic field adsorption force, and ensure that the subsequent scraper 26 cleans more thoroughly.

[0026] Please see Figure 4A further solution based on this embodiment is as follows: Three sets of vibrating rods 36 and movable supports 35 are provided. The three sets of vibrating rods 36 and movable supports 35 are symmetrically distributed in a ring on the rotating rod 22. No neodymium iron boron permanent magnets 25 are present at the contact points between the three sets of vibrating rods 36 and the stainless steel cylinder 23. By setting the vibrating rods 36 and movable supports 35 into three sets and symmetrically distributed in a ring, the inner wall of the stainless steel cylinder 23 can be vibrated in every direction when the rotating rod 22 rotates, preventing the accumulation of iron particles that cannot be loosened. By not providing neodymium iron boron permanent magnets 25 at the contact points between the vibrating rods 36 and the stainless steel cylinder 23, magnetic field interference or mechanical wear between the vibrating rods 36 and the permanent magnets is prevented. This ensures the magnetic field stability of the permanent magnets, extends the service life of the vibrating rods 36 and the permanent magnets, and reduces the frequency of component replacement.

[0027] Please see Figure 4 A further solution based on this embodiment is as follows: The second drive unit includes a second motor 32 fixedly connected to the rotating rod 22, a rotating disk 33 fixedly connected to the output end of the second motor 32, and a light rod 34 fixedly connected to the rotating disk 33. The other end of the movable bracket 35 is rotatably connected to the light rod 34. The second motor 32 is used to rotate the rotating disk 33. By driving the rotating disk 33 to rotate through the second motor 32, the light rod 34 is driven to make a circular motion, which in turn pulls the movable bracket 35 to drive the vibrating rod 36 to swing. This transmission method has a simple structure, high reliability, and can accurately control the swing frequency of the vibrating rod 36. By integrating the second motor 32, rotating disk 33 and other components onto the rotating rod 22, and rotating synchronously with the rotating rod 22, the problem of wire entanglement when external power is transmitted to the rotating component is avoided. At the same time, the direct drive of the motor can quickly respond to the vibration demand and adjust the swing frequency according to the iron particle accumulation to ensure that the vibration effect is adapted to the actual processing scenario.

[0028] Please see Figure 3 A further solution based on this embodiment is as follows: the conductive slip ring 21 is configured with a fixed end and a rotating end, and the fixed end of the conductive slip ring 21 is electrically connected to an external power source, while the rotating end of the conductive slip ring 21 is electrically connected to the second motor 32. Through the conductive slip ring 21, when the rotating rod 22 drives the stainless steel cylinder 23 to rotate, the external power source can continuously transmit current to the second motor 32, driving the vibrating rod 36 to oscillate periodically. By dividing the conductive slip ring 21 into a fixed end and a rotating end, with the fixed end connected to the external power source and the rotating end connected to the second motor 32, a stable power supply between the rotating component and the fixed power source is achieved. This design avoids the power supply interruption or wire wear caused by wire entanglement when the rotating rod 22 rotates, ensuring that the second motor 32 can continuously obtain current and drive the vibration unit to work stably. At the same time, the power supply method of the conductive slip ring 21 does not require complex wiring or conversion structures, reducing the risk of circuit failure, ensuring continuous operation of the device, and avoiding the accumulation of iron particles due to power supply problems, which affects the separation efficiency.

[0029] Please see Figure 5-6 A further embodiment of this solution is as follows: The residue guiding unit includes a guiding frame 41 fixedly connected to the support frame 1; a first mounting frame 42, a second mounting frame 44, and a third mounting frame 46 detachably mounted on the guiding frame 41 in a stepped manner via elastic clips; a first neodymium iron boron permanent magnet rod 43 rotatably connected to the first mounting frame 42; a second neodymium iron boron permanent magnet rod 45 rotatably connected to the second mounting frame 44; a third neodymium iron boron permanent magnet rod 47 rotatably connected to the third mounting frame 46; and a stainless steel sleeve 48 sequentially fixedly connected to the first neodymium iron boron permanent magnet rod 43, the second neodymium iron boron permanent magnet rod 45, and the third neodymium iron boron permanent magnet rod 47. All 7 components use three sets of magnetic grids to intercept ultrafine iron filings flowing with the residue. Stainless steel sleeves 48 prevent residue from abrading the surface of the magnetic rods. A flow guide 41 provides a mounting carrier for the mounting frame and permanent magnet rods, ensuring that the residue can flow stably along the flow guide 41. The mounting frame is detachably connected by elastic blocks, which facilitates subsequent cleaning, maintenance or replacement of the permanent magnet rods and reduces maintenance difficulty. The magnetic grids composed of three sets of permanent magnet rods can perform secondary iron removal on the residue during the flow process and intercept ultrafine iron filings not adsorbed by the stainless steel cylinder 23. By setting the stainless steel sleeves 48 on the surface of the permanent magnet rods, the direct friction of residues on the surface of the permanent magnet rods is effectively prevented, reducing the wear of the permanent magnet rods, extending their service life, and ensuring that the magnetic field strength of the permanent magnet rods is not affected by wear.

[0030] Please see Figure 6A further scheme based on this embodiment is as follows: the magnetic field strength of the first NdFeB permanent magnet rod 43, the second NdFeB permanent magnet rod 45, and the third NdFeB permanent magnet rod 47 is all 1.8 Tesla, and the distance between the first NdFeB permanent magnet rod 43 is 15mm, and the installation height of the first mounting bracket 42 is 2 / 3 of the depth of the guide bracket 41; the distance between the second NdFeB permanent magnet rod 45 is 8mm, and the installation height is 1 / 2 of the depth of the guide bracket 41; the distance between the third NdFeB permanent magnet rod 47 is 5mm, and the installation height is 1 / 3 of the depth of the guide bracket 41. The first NdFeB permanent magnet rod 43, the second NdFeB permanent magnet rod 45, and the third NdFeB permanent magnet rod 47, all with a magnetic field strength of 1.8 Tesla, are all stronger than the magnetic field strength of the NdFeB permanent magnet sheet 25, which has a magnetic field strength of 1.2 to 1.5 Tesla, and are thus used specifically for... The ultra-fine iron filings are effectively adsorbed by setting the magnetic field strength of the three sets of permanent magnets to 1.8 Tesla, which is stronger than the magnetic field of the permanent magnets on the inner wall of the stainless steel cylinder 23. This compensates for the insufficient adsorption force of the stainless steel cylinder 23 on small iron particles. By setting different spacings of permanent magnets (15mm, 8mm, 5mm) and installation heights (2 / 3, 1 / 2, 1 / 3 of the depth of the guide frame 41), a stepped interception structure is formed. This allows the residue to first pass through the coarse-spacing, high-position magnetic grid to intercept larger particles, and then through the fine-spacing, low-position magnetic grid to intercept smaller particles. This ensures the iron removal effect while preventing residue from clogging the magnetic grid and affecting the flow. This stepped design maximizes the interception of ultra-fine iron filings, further improving the iron resource recovery rate and reducing the waste and pollution caused by iron filings being discharged with the residue.

[0031] Working principle: By activating the first drive unit (i.e., the first motor 24 fixed to the support frame 1) installed on the support frame 1, its output end drives the rotating rod 22 to rotate synchronously, and the stainless steel cylinder 23 fixedly connected to the rotating rod 22 rotates together; at the same time, the conductive slip ring 21 installed on the support frame 1 is connected to an external power source through its fixed end and to the second motor 32 of the second drive unit through its rotating end, continuously supplying power to the second motor 32 that rotates with the rotating rod 22. After the second motor 32 starts, it drives the rotating disk 33 at its output end to rotate, and the smooth rod 34 on the rotating disk 33 performs a circular motion and pulls the movable bracket 3. 5. Three sets of vibrating rods 36 (without NdFeB permanent magnets 25 at the contact points between the vibrating rods 36 and the stainless steel cylinder 23) are rotatably connected to the movable support 35 and fixed to the rotating rod 22 via hinge seats 31, oscillating periodically with the hinge seats 31 as the fulcrum, preparing in advance for the subsequent loosening of iron particles; subsequently, the residue of the thermal liquefaction products of the steel rolling sludge is transported to the upper surface of the stainless steel cylinder 23 and uniformly covered under the action of gravity. Several NdFeB permanent magnets 25, which are arranged in a ring along the axial direction of the rotating rod 22, with adjacent opposite polarities and a magnetic field strength of 1.2 to 1.5 Tesla, and fixed to the inner wall of the stainless steel cylinder 23, generate a uniform strong magnetic field. Iron particles from the residue are efficiently adsorbed onto the surface of the stainless steel cylinder 23, while non-magnetic ash and organic matter slide directly into the guide frame 41 of the residue guide unit fixed to the support frame 1. As the stainless steel cylinder 23 continues to rotate, the vibrating rod 36 continuously loosens the iron particles adsorbed on the surface to prevent them from forming a dense thin shell. When the area of ​​the stainless steel cylinder 23 adsorbing iron particles rotates to the bottom, the iron particles are forcibly scraped off by the scraper 26, which is detachably mounted on the support frame 1 with bolts, and the iron particles fall into the iron particle collection hopper 27 fixed to the support frame 1. The non-magnetic residue that enters the guide frame 41 will pass through the guide frame 41 in sequence. The first, second, and third neodymium iron boron permanent magnets (each with a magnetic field strength of 1.8 Tesla, spacings of 15mm, 8mm, and 5mm, and installation heights of 2 / 3, 1 / 2, and 1 / 3 of the depth of the guide frame 41, respectively) are rotatably connected to the first, second, and third mounting frames via elastic clips in a stepped manner. The magnetic grid formed by the three sets of permanent magnets intercepts the ultrafine iron filings in the residue in a stepped manner (the stainless steel sleeves 48 on the surface of the permanent magnets prevent the residue from being worn). Finally, the non-magnetic residue that has undergone deep iron removal flows out from the guide frame 41 and enters the subsequent cooling process, realizing automatic and efficient separation of iron and residue throughout the entire process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetically enhanced separation device for treating the thermal liquefaction products of rolling mill sludge, comprising a support frame (1), characterized in that: It also includes a conductive slip ring (21) installed on the support frame (1), a rotating rod (22) rotatably connected to the support frame (1) by the conductive slip ring (21), a stainless steel cylinder (23) fixedly connected to the rotating rod (22), a first drive unit installed on the support frame (1), a neodymium iron boron permanent magnet sheet (25) fixedly connected to the inner wall of the stainless steel cylinder (23), a vibration unit installed on the rotating rod (22), a second drive unit installed on the vibration unit, a scraper (26) detachably installed on the support frame (1) by bolts, an iron particle collection hopper (27) fixedly connected to the support frame (1), and a residue guiding unit. The scraper (26) is used to scrape off the iron particles on the surface of the stainless steel cylinder (23) so that they fall into the iron particle collection hopper (27). The first drive unit is used to drive the stainless steel cylinder (23) and the rotating rod (22) to rotate. The residue guiding unit is used to guide the non-magnetic ash and organic matter on the surface of the stainless steel cylinder (23) to facilitate subsequent cooling treatment.

2. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 1, characterized in that: The magnetic field strength of the neodymium iron boron permanent magnet sheet (25) is 1.2 to 1.5 Tesla. There are several neodymium iron boron permanent magnet sheets (25). Several groups of neodymium iron boron permanent magnet sheets (25) are arranged in a ring along the axial direction of the rotating rod (22). The polarities of two adjacent neodymium iron boron permanent magnet sheets (25) are opposite. The opposite polarities of adjacent neodymium iron boron permanent magnet sheets (25) are used to enhance the uniformity of the surface magnetic field.

3. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 1, characterized in that: The first drive unit is a first motor (24) fixedly connected to the support frame (1), and the rotating rod (22) is fixedly connected to the output end of the first motor (24).

4. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 1, characterized in that: The vibration unit includes a hinge seat (31) fixedly connected to one end of the rotating rod (22), a vibration rod (36) rotatably connected to the hinge seat (31) at one end, and a movable bracket (35) rotatably connected to the other end of the vibration rod (36). The second drive unit is used to drive the movable bracket (35) to drive the vibration rod (36) to oscillate periodically.

5. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 4, characterized in that: The vibrating rod (36) and the movable support (35) are each provided with three sets. The three sets of vibrating rods (36) and the movable support (35) are symmetrically distributed in a ring on the rotating rod (22), and there are no neodymium iron boron permanent magnet sheets (25) at the contact positions between the three sets of vibrating rods (36) and the stainless steel cylinder (23).

6. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 1, characterized in that: The second drive unit includes a second motor (32) fixedly connected to the rotating rod (22), a rotating disk (33) fixedly connected to the output end of the second motor (32), and a light rod (34) fixedly connected to the rotating disk (33). The other end of the movable bracket (35) is rotatably connected to the light rod (34). The second motor (32) is used to rotate the rotating disk (33).

7. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 6, characterized in that: The conductive slip ring (21) is configured with a fixed end and a rotating end. The fixed end of the conductive slip ring (21) is electrically connected to an external power source, and the rotating end of the conductive slip ring (21) is electrically connected to a second motor (32). When the rotating rod (22) drives the stainless steel cylinder (23) to rotate through the conductive slip ring (21), the external power source can continuously transmit current to the second motor (32) to drive the vibrating rod (36) to oscillate periodically.

8. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 1, characterized in that: The residue guiding unit includes a guide frame (41) fixedly connected to a support frame (1), a first mounting frame (42) and a second mounting frame (44) detachably mounted on the guide frame (41) in a stepped manner via elastic clips, and a third mounting frame (46), a first neodymium iron boron permanent magnet rod (43) rotatably connected to the first mounting frame (42), a second neodymium iron boron permanent magnet rod (45) rotatably connected to the second mounting frame (44), and a third mounting frame (46) rotatably connected to the third mounting frame (46). The first NdFeB permanent magnet rod (47) is fixedly connected to the first NdFeB permanent magnet rod (43), the second NdFeB permanent magnet rod (45), and the third NdFeB permanent magnet rod (47). The first NdFeB permanent magnet rod (43), the second NdFeB permanent magnet rod (45), and the third NdFeB permanent magnet rod (47) are all connected to the first NdFeB permanent magnet rod (43), the second NdFeB permanent magnet rod (45), and the third NdFeB permanent magnet rod (47) by forming three sets of magnetic grids to intercept the ultrafine iron filings flowing with the residue. The stainless steel sleeve (48) is used to prevent the residue from abrading the surface of the magnetic rod.

9. The magnetically enhanced separation device for treating thermal liquefaction products of rolling mill sludge according to claim 8, characterized in that: The magnetic field strength of the first NdFeB permanent magnet (43), the second NdFeB permanent magnet (45), and the third NdFeB permanent magnet (47) is 1.8 Tesla. The distance between the first NdFeB permanent magnet (43) is 15 mm, and the installation height of the first mounting bracket (42) is 2 / 3 of the depth of the guide bracket (41). The distance between the second NdFeB permanent magnet (45) is 8 mm, and the installation height is 1 / 2 of the depth of the guide bracket (41). The distance between the third NdFeB permanent magnet (47) is 5 mm, and the installation height is 1 / 3 of the depth of the guide bracket (41). The magnetic field strength of all three is 1.8 Tesla. Tesla's first neodymium iron boron permanent magnet rod (43), second neodymium iron boron permanent magnet rod (45) and third neodymium iron boron permanent magnet rod (47) all use a neodymium iron boron permanent magnet sheet (25) with a magnetic field strength of 1.2 to 1.5 Tesla, and are therefore used specifically for ultrafine iron filings.

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