A slag raw material integrated high-efficiency iron removal device and process

Abstract

The application discloses a kind of high-efficiency iron-removing equipment of slag raw material integrated type, and the continuous treatment of slag is realized by matching installation two-stage crushing assembly, multistage gravity separation assembly, two groups of magnetic separation components.Double-stage crushing assembly carries out coarse and fine crushing and screening to slag;Multistage gravity separation assembly separates metal iron and cinder from the crushed slag;Two groups of magnetic separation components are used for primary and secondary magnetic separation respectively, to further separate metal iron in slag.Setting also has transmission component, for accepting separated metal iron and conveying outward.Corresponding continuous iron-removing process includes: crushing treatment, primary magnetic separation, gravity separation treatment, secondary magnetic separation treatment.The whole equipment implements mechanization, automation, closed operation, and has high processing efficiency and good environmental protection effect.It can greatly reduce processing cost, improve the utilization value of subsequent cinder, and bring significant economic and social benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slag treatment, in particular to a slag raw material integrated efficient iron removal equipment and process. BACKGROUND

[0002] With the rapid development of the steel industry, the production of slag also increases year by year, and after further processing, it can be used in various occasions, which is embodied in the following scenarios:

[0003] 1. Civil engineering: After proper treatment, slag is often used as raw material for road paving, concrete making, and cement production.

[0004] 2. Metallurgical field: Slag can be used as a flux and coolant for iron smelting.

[0005] 3. Environmental protection field: Treated slag can be used for water treatment, wastewater treatment, and solid waste treatment.

[0006] 4. Agricultural field: After proper treatment, slag can also be used as fertilizer to improve soil structure.

[0007] However, due to the high content of metallic iron in slag, if it is directly applied to downstream products, the following problems exist. On the one hand, iron is a very valuable resource, and through iron removal treatment, this part of iron elements can be recycled for steel production, improving resource utilization and reducing production costs. On the other hand, if the iron elements in the slag are not treated, it may cause the slag to not achieve the expected effect in some applications. For example, when slag is used as a road paving material, if it contains too much iron element, it may cause corrosion of the slag, thereby affecting the stability and durability of the road. Therefore, it is necessary to remove iron from the slag.

[0008] Therefore, it is particularly important to develop slag resource recycling technology. Currently, slag treatment technologies mainly include physical and chemical methods. Physical methods use magnetic force, gravity and other physical actions to separate metallic iron from slag; chemical methods use chemical reactions to convert slag into other valuable products. These two methods have their own advantages and limitations.

[0009] For example, physical methods have low equipment cost but low separation efficiency; chemical methods have high product added value but require large equipment investment and complex process. In addition, existing physical method equipment is mostly intermittent, with low production efficiency; chemical method equipment has limited processing capacity and is difficult to handle large amounts of slag.

[0010] In order to realize high-efficiency continuous treatment of slag, it is urgent to design an integrated slag iron removal equipment and process. The equipment needs to have the functions of continuous feeding, multi-stage treatment, automatic sorting, etc., which can fully recover the metallic iron in the slag and maximize the comprehensive utilization of the slag. There is no equipment reported so far that can well meet this technical demand. SUMMARY

[0011] In view of the above deficiencies in the prior art, the purpose of the present application is to provide a slag raw material integrated high-efficiency iron removal equipment and process, which effectively improves the recovery rate of metallic iron in the slag and makes the quality of the slag after iron removal more stable, providing an effective technical means for slag resource utilization.

[0012] The technical scheme adopted by the present application to achieve the above purpose is as follows: a slag raw material integrated high-efficiency iron removal equipment, comprising a rack and a two-stage crushing assembly, a multi-stage gravity separation assembly and a magnetic separation assembly which are installed on the rack in a matched manner and kept in a matched combination.

[0013] The two-stage crushing assembly is used for sequentially performing coarse crushing and fine crushing treatment on the slag raw material and performing screening treatment during the coarse and fine crushing treatment.

[0014] The multi-stage gravity separation assembly is used for performing multi-stage gravity separation treatment on the slag raw material after crushing treatment to realize separation from metallic iron and dregs.

[0015] The magnetic separation assembly includes two groups, one of which is assembled at the discharge end of the two-stage crushing assembly and is used to receive the discharge of the two-stage crushing assembly for magnetic separation treatment, and the slag raw material passing through the magnetic separation assembly is transferred to the inlet end of the multi-stage gravity separation assembly through a material conveying device; the other is a screening assembly assembled at the bottom of the multi-stage gravity separation assembly and used to receive the excluded dregs for magnetic separation treatment, and the dregs passing through the magnetic separation assembly complete the iron removal treatment.

[0016] It also includes a transmission assembly matched with the two groups of magnetic separation assemblies, which is used to receive the metallic iron selected by the two groups of magnetic separation assemblies and transmit it outward.

[0017] In some implementations, in order to ensure stable operation of the two-stage crushing assembly and realize coarse crushing and fine crushing of the slag raw material, screening treatment is provided after the coarse crushing and fine crushing operation is completed. For this purpose, the following technical scheme is provided.

[0018] The two-stage crushing assembly includes a coarse crushing mechanism and a fine crushing mechanism, the coarse crushing mechanism includes a treatment cylinder, a mounting shaft and crushing hammers, the treatment cylinder is fixedly installed on the rack, and the bottom of the treatment cylinder is uniformly provided with screening holes, the mounting shaft is rotatably installed in the treatment cylinder, and a plurality of groups of mounting discs are fixedly connected to the mounting shaft, a plurality of groups of crushing hammers are rotatably installed on the outer edges of the gaps between adjacent two groups of mounting discs in a ring array.

[0019] The fine breaking mechanism comprises a screening cylinder, a processing box and a crushing roller, the screening cylinder is assembled on the frame in a relative rotation manner, and the inner wall of the screening cylinder is uniformly fixed with radially distributed lifting plates, the processing box is fixedly connected with the frame and arranged inside the screening cylinder, the crushing roller comprises two groups which are rotatably installed inside the processing box, the same end of the two groups of crushing rollers is fixedly connected with a reversing gear which keeps engagement, a plurality of groups of crushing ribs which are spirally distributed are fixedly connected on the two groups of crushing rollers, the spiral directions of the crushing ribs on the two groups of crushing rollers are opposite and keep engagement.

[0020] On the basis of the above technical scheme about the double-stage breaking assembly, in order to ensure that the slag which is broken and screened by the coarse breaking mechanism can be stably transported to the processing box in the fine breaking mechanism for secondary breaking treatment, the following technical scheme is provided.

[0021] The double-stage breaking assembly further comprises a transfer assembly, the transfer assembly comprises a transmission cylinder, a transmission shaft and spiral conveying leaves, the upstream end of the transmission cylinder is assembled with a material receiving port which is arranged at the bottom of the processing cylinder, the screening hole is arranged inside the material receiving port, the downstream end of the transmission cylinder is communicated to the processing box and arranged above the crushing roller, the transmission shaft is rotatably installed at the center of the transmission cylinder and arranged through the transmission cylinder and the processing box, and the spiral conveying leaves are fixedly connected to the transmission shaft and arranged in the transmission cylinder.

[0022] On the basis of the above technical scheme about the double-stage breaking assembly, in order to ensure that the coarse breaking mechanism, the fine breaking mechanism and the transfer mechanism can stably cooperate and operate, and realize the continuous breaking and screening treatment of the slag raw material, the following technical scheme is provided.

[0023] The double-stage breaking assembly further comprises a driving mechanism, the driving mechanism comprises a first driving motor, a first belt pulley which is fixedly connected to the mounting shaft and arranged outside the processing box, a second belt pulley which is fixedly connected to the transmission shaft and arranged outside the transmission cylinder, a first transmission gear which is fixedly connected to the transmission shaft and arranged outside the processing box, a second transmission gear which is fixedly connected to the end of one of the crushing rollers and arranged outside the processing box, a transmission shaft which is rotatably installed on the frame and arranged above the screening cylinder, two groups of transmission sprockets which are fixedly connected to the transmission shaft and the transmission shaft, a third transmission gear which is fixedly connected to the transmission shaft, a fourth transmission gear which is fixedly connected to the periphery of the screening cylinder and keeps engagement with the third transmission gear; the first driving motor is power connected with the mounting shaft, the first belt pulley and the second belt pulley are power connected through a transmission belt, the first transmission gear keeps engagement with the second transmission gear, and the two groups of transmission sprockets are power connected through a transmission chain.

[0024] In some embodiments, in order to ensure that the slag at the bottom of the screening cylinder can be efficiently screened, and the slag lifted by the lifting plate of the screening cylinder can be effectively input into the receiving hopper at the top of the processing box, the following technical solutions are provided.

[0025] The outer wall of the screening cylinder is fixedly connected with an annular gasket, the fine breaking mechanism further comprises a cam, a lifting frame, a shock hammer and a return spring, the lifting frame is slidingly installed on the rack and moves up and down in the vertical direction, the cam is fixedly installed on the transmission shaft and is in close contact with the lifting frame, the shock hammer is fixedly connected to the bottom of the lifting frame and is in abutment with the annular gasket, and the return spring is arranged on the lifting frame and is in abutment with the rack.

[0026] In some embodiments, in order to ensure that the magnetic separation assembly can be stably installed on the rack, and the magnetic separation operation on the metallic iron in the slag can be realized by the magnetic separation assembly, the following technical solutions are provided.

[0027] The magnetic separation assembly comprises a plurality of groups of conveying rollers which are arranged in parallel and rotatably installed on the rack, and a conveying belt which is wound around the periphery of the conveying rollers, the conveying belt at least comprises a material guiding section and a magnetic separation section, the magnetic separation section is arranged below the material guiding section, and the material guiding sections of the two groups of magnetic separation assemblies are arranged below the double-stage crushing assembly and the multi-stage gravity separation assembly, respectively.

[0028] The upper mounting plate is arranged below the material guiding section and is in close contact with the inner side surface of the material guiding section, and the lower mounting plate is arranged above the magnetic separation section and is in close contact with the inner side surface of the magnetic separation section.

[0029] The magnetic separation assembly further comprises electromagnets and permanent magnets, the electromagnets are uniformly arranged on the upper mounting plate and the lower mounting plate and are in close contact with the transmission belt, and the permanent magnets are uniformly arranged on the conveying rollers arranged at the connection between the material guiding section and the magnetic separation section.

[0030] In some embodiments, in order to ensure that the transmission assembly can be stably installed on the rack, can effectively collect and transmit the metallic iron particles selected by the magnetic separation assembly, and can realize the coordinated operation of the magnetic separation assembly and the transmission assembly, the following technical solutions are provided.

[0031] The transmission assembly comprises side baffles, transmission rollers and a transmission belt, the side baffles are arranged through the two groups of magnetic separation assemblies and are below the magnetic separation sections, the transmission rollers are rotatably installed at both ends of the side baffles, the transmission belt is wound around the transmission rollers, and the side baffles are fixedly connected with scrapers which are in close contact with the outer side surfaces of the magnetic separation sections.

[0032] The transmission rollers of one of the two groups of magnetic separation assemblies are coaxially fixed through a connecting shaft, and the end of the transmission roller connected with the connecting shaft is fixedly connected with a first bevel gear, the end of the transmission roller is fixedly connected with a second bevel gear in meshing connection with the first bevel gear, and the end of the first bevel gear is power-connected with a second driving motor fixedly installed on the rack.

[0033] In some embodiments, in order to ensure that the multi-stage gravity separation assembly can efficiently separate the input slag and ensure that the iron particles and the dregs are separated as much as possible, the following technical solutions are provided.

[0034] The multi-stage gravity separation assembly comprises: a mounting shell fixedly installed on the rack, a rotating shaft rotatably installed at the center of the mounting shell and arranged in the vertical direction, a distribution cap fixedly installed at the top of the mounting shell, a plurality of layers of main distribution discs and auxiliary distribution discs fixedly inserted on the rotating shaft, a plurality of layers of guide rings fixedly connected to the inner wall of the mounting shell, a feeding plate rotatably installed at the bottom of the mounting shell, and a third driving motor fixedly installed on the rack and in power connection with the rotating shaft and the feeding plate.

[0035] An upper feeding opening is formed at the top of the mounting shell and in communication with the material conveying device, an upper feeding passage is formed at the bottom end of the upper feeding opening and in communication with the inside of the mounting shell, and the upper feeding passage is arranged above the distribution cap.

[0036] The auxiliary distribution discs and the guide rings of each group are arranged at the gap between adjacent main distribution discs, the centers of the main distribution discs and the auxiliary distribution discs are respectively provided with main nesting seats and auxiliary nesting seats, the main nesting seats and the auxiliary nesting seats are in sliding insertion with the rotating shaft, the main nesting seats are fixedly connected with the main distribution discs and are provided with annular storage grooves, the annular storage grooves are provided with guide passages, the auxiliary distribution discs are fixedly connected with guide discs arranged below the guide passages, and the guide discs are fixedly connected with the auxiliary nesting seats.

[0037] The bottom of the mounting shell is fixedly connected with an annular isolation seat, the bottom of the mounting shell is provided with an outer discharge opening and an inner discharge opening arranged on the two sides of the annular isolation seat, and the feeding plate is in close contact with the bottom of the mounting shell.

[0038] On the basis of the above technical solutions of the multi-stage gravity separation assembly, in order to ensure that the feeding plate can be stably installed at the bottom of the mounting shell and ensure that the third driving motor can stably and independently drive the rotating shaft and the feeding plate to rotate, the following technical solutions are provided.

[0039] The rotating seat is uniformly fixed with a plurality of groups of feeding plates on the rotating seat, the rotating shaft is rotatably installed at the rotating seat shaft, the rotating seat and the rotating shaft bottom are respectively fixed with a first transmission bevel gear and a second transmission bevel gear arranged outside the mounting shell, the rotating shaft of the third driving motor is fixed with a first driving bevel gear and a second driving bevel gear, the first driving bevel gear and the first transmission bevel gear are kept in engagement, and the second driving bevel gear and the second transmission bevel gear are kept in engagement.

[0040] A slag raw material integrated high-efficiency iron removal process is used for removing iron from the slag raw material integrated high-efficiency iron removal equipment, and includes the following steps.

[0041] S1, crushing treatment,

[0042] The slag is input into the coarse crushing mechanism, and the coarse crushing treatment is performed on the slag by means of the running mounting shaft and the crushing hammer; the crushed slag is screened by the screening hole at the bottom of the treatment cylinder, and the slag passing through the screening hole is transferred to the fine crushing mechanism by the transfer mechanism, so that the slag passing through the screening hole is continuously crushed by the crushing hammer until it passes through the screening hole.

[0043] The slag entering the fine crushing assembly is subjected to fine crushing treatment by the crushing roller, and the crushed slag is screened by the screening cylinder; the slag not passing through the screening cylinder is continuously crushed by the crushing roller under the driving of the screening cylinder until it passes through the screening cylinder.

[0044] S2, primary magnetic separation treatment,

[0045] The slag passing through the screening cylinder falls into the magnetic separation assembly below, and the separated metallic iron in the slag is separated and conveyed to the conveying assembly by the magnetic separation assembly.

[0046] S3, gravity separation treatment,

[0047] The slag after the primary magnetic separation treatment in the step S2 is transferred to the multi-stage gravity separation assembly by the material conveying equipment, and the slag is separated into metallic iron particles and cinder by the multi-stage gravity separation assembly; the metallic iron particles are directly conveyed to the conveying assembly.

[0048] S4, secondary magnetic separation treatment,

[0049] The cinder separated in the step S3 is introduced into the magnetic separation assembly below, and the separated metallic iron in the cinder is further separated and conveyed to the conveying assembly by the magnetic separation assembly; the metallic iron particles carried on the conveying assembly are outwardly conveyed by the conveying assembly; and the cinder after the magnetic separation assembly is used as a slag raw material in downstream production activities.

[0050] The beneficial effects of the present application are as follows:

[0051] 1. Realize the continuous high efficiency treatment of slag. The device integrates coarse and fine crushing, screening and transferring, multi-stage magnetic separation, centrifugal gravity separation and other units, which can continuously and continuously carry out multi-stage physical treatment on the slag without manual intervention, greatly improving the treatment efficiency.

[0052] 2. Improve the recovery rate of metallic iron in the slag. Through multi-stage magnetic separation and gravity separation treatment, the fine metallic iron in the slag can be effectively separated, and the recovery rate can reach more than 95%, which is better than the recovery rate of traditional physical method equipment.

[0053] 3. Improve the quality stability of the slag after iron removal. The device can automatically adapt to the treatment of different specifications of slag, ensuring the uniformity of the composition of the slag after iron removal, and facilitating the next step of comprehensive utilization.

[0054] 4. Reduce the processing cost. The device is designed as a whole, with low operating cost and high degree of automation, which greatly reduces the labor cost.

[0055] 5. Good environmental protection effect. The device operates in a closed manner, avoiding secondary pollution. A large amount of recovered metallic iron can be reused for steelmaking, reducing the amount of natural resource exploitation, and having good environmental protection effect.

[0056] 6. Significant economic and social benefits. The application of the device not only brings considerable environmental and social benefits, but also creates considerable economic benefits for steel enterprises, which is of great significance to the sustainable development of steel enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a structural schematic diagram of the present application;

[0058] Figure 2 is a structural schematic diagram of another view of the present application;

[0059] Figure 3 is a structural schematic diagram of the rack;

[0060] Figure 4 is a structural schematic diagram of part of the double-stage crushing assembly;

[0061] Figure 5 is a structural schematic diagram of the driving mechanism and the parts of the double-stage crushing assembly;

[0062] Figure 6 is a structural schematic diagram of the installation of the fine crushing mechanism on the rack;

[0063] Figure 7 is a structural schematic diagram of the fine crushing mechanism and the driving mechanism;

[0064] Figure 8 is a structural schematic diagram of the driving mechanism and the rapping mechanism;

[0065] Figure 9 Structure diagram of installation of two groups of magnetic separation assemblies on the rack;

[0066] Figure 10 Structure diagram of combination of the magnetic separation assembly and the transmission assembly;

[0067] Figure 11 Structure diagram of combination of the upper installation plate, the lower installation plate, the second conveying roller and the electromagnet and the permanent magnet;

[0068] Figure 12 Structure diagram of the multi-stage gravity separation assembly;

[0069] Figure 13 Structure diagram of the inside of the multi-stage gravity separation assembly;

[0070] Figure 14 Structure diagram of combination of the upper and lower installation shells, the rotating shaft and the feeding plate;

[0071] Figure 15 Structure diagram of the main material distribution disc, the auxiliary material distribution disc and the material guide ring in a disassembled state;

[0072] Figure 16 Structure diagram of the main material distribution disc, the auxiliary material distribution disc and the material guide ring in a cut state;

[0073] Figure 17 Structure diagram of combination of the third driving motor, the feeding plate and the rotating shaft.

[0074] In the figure: 1 frame, 11 installation box, 12 ring-shaped installation cover, 13 upper installation plate, 14 lower installation plate, 15 partition plate, 151 assembly opening, 16 bearing plate, 17 guide plate, 18 storage barrel, 21 coarse breaking mechanism, 211 processing cylinder, 2111 screening hole, 2112 feeding hopper, 212 installation shaft, 2121 installation disc, 2122 assembly shaft, 213 breaking hammer, 221 screening cylinder, 2211 lifting plate, 2212 ring-shaped gasket, 222 processing box, 2221 receiving hopper, 223 breaking roller, 2231 reversing gear, 2232 breaking edge, 224 vibrating mechanism, 2241 cam, 2242 lifting frame, 2243 jolt ram, 2244 return spring, 23 transfer mechanism, 231 transmission cylinder, 2311 receiving port, 232 transmission shaft, 233 spiral conveying blade, 24 driving mechanism, 2401 first driving motor, 2402 first belt pulley, 2403 second belt pulley, 2404 first transmission gear, 2405 second transmission gear, 2406 transmission shaft, 2407 transmission sprocket, 2408 third transmission gear, 2409 fourth transmission gear, 2410 transmission belt, 2411 transmission chain, 3 multi-stage gravity separation assembly, 31 installation shell, 311 feeding port, 312 feeding passage, 313 ring-shaped isolation seat, 314 outer discharge port, 315 inner discharge port, 316 supporting leg, 317 dregs discharge pipe, 318 iron particle discharge pipe, 319 dust cover, 32 rotating shaft, 321 second transmission bevel gear, 33 cloth cap, 34 main cloth disc, 341 main nesting seat, 342 ring-shaped storage groove, 343 guide passage, 35 auxiliary cloth disc, 351 auxiliary nesting seat, 352 guide disc, 353 connecting ring, 354 guide through hole, 36 guide ring, 37 feeding plate, 371 rotating seat, 372 first transmission bevel gear, 38 third driving motor, 381 first driving bevel gear, 382 second driving bevel gear, 4 magnetic separation assembly, 411 first conveying roller, 412 second conveying roller, 413 third conveying roller, 414 fourth conveying roller, 415 fifth conveying roller, 4151 connecting shaft, 4152 first bevel gear, 4153 second driving motor, 42 conveying belt, 421 guide section, 422 magnetic separation section, 43 electromagnet, 44 permanent magnet, 5 material conveying device, 6 transmission assembly, 61 side baffle, 62 conveying roller, 621 second bevel gear, 63 conveying belt. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0076] Please refer to Figures 1-17The technical solutions provided by the present application are described in detail in combination with the following embodiments, and the operation principles and cooperating operation procedures of the technical solutions are described in detail. The iron removal process of the slag raw material integrated efficient iron removal equipment provided by the present application is disclosed, and the beneficial effects achieved thereby are described in detail.

[0077] Embodiment 1

[0078] The slag raw material integrated efficient iron removal equipment comprises a rack 1, and a two-stage crushing assembly, a multi-stage gravity separation assembly 3 and a magnetic separation assembly 4 which are installed on the rack 1 in a matched manner and kept in a matched combination.

[0079] The two-stage crushing assembly is used for sequentially performing coarse crushing and fine crushing on the slag raw material and performing screening treatment during the coarse crushing and fine crushing.

[0080] The multi-stage gravity separation assembly 3 is used for performing multi-stage gravity separation on the slag raw material after the crushing treatment to realize separation from metallic iron and dregs.

[0081] The magnetic separation assembly 4 comprises two groups. One of the groups is arranged at the discharge end of the two-stage crushing assembly and is used for receiving the discharge of the two-stage crushing assembly for magnetic separation treatment. The slag raw material passing through the magnetic separation assembly 4 is transferred to the inlet end of the multi-stage gravity separation assembly 3 through a material conveying device 5. The other group is arranged at the bottom of the multi-stage gravity separation assembly 3 and is used for receiving the discharged dregs for magnetic separation treatment. The dregs passing through the magnetic separation assembly 4 complete the iron removal treatment.

[0082] The transmission assembly 6 which is matched with the two groups of magnetic separation assemblies 4 is further included. The transmission assembly 6 is used for receiving the metallic iron selected by the two groups of magnetic separation assemblies 4 and transmitting the metallic iron outward.

[0083] When the slag produced by steel smelting is reprocessed for application in the fields of civil engineering, metallurgy, environmental protection and agriculture, it needs to be subjected to iron removal treatment. In this way, the separated metallic iron can be recycled while the quality and performance of the slag product are ensured.

[0084] When the integrated efficient iron removal equipment is used for iron removal, the untreated slag raw material is first input into the two-stage crushing assembly to complete two-stage crushing treatment of coarse crushing and fine crushing. During the coarse crushing treatment, the slag meeting the particle size requirement is transferred to the fine crushing process, while the slag larger than the set particle size requirement is subjected to cyclic coarse crushing until the screening requirement is met and the slag is transferred to the fine crushing process.

[0085] In the fine crushing process, the slag is further crushed to meet the particle size requirement of the subsequent slag treatment. The slag after fine crushing is subjected to secondary screening treatment. The slag meeting the particle size requirement is transferred to the next process, and the slag not meeting the screening particle size requirement is subjected to circulating fine crushing operation until it meets the screening requirement of this link and is transferred to the next process.

[0086] The slag treated by the double-stage crushing assembly enters the first group of magnetic separation assemblies 4 for treatment. Since the metallic iron particles contained in the slag have magnetism, the metallic iron is separated out by the first group of magnetic separation assemblies 4 and input into the transmission assembly 6. The slag raw material passing through the magnetic separation assembly 4 is transferred to the multi-stage gravity separation assembly 3 by the material conveying device 5 for multi-stage gravity separation treatment.

[0087] It should be noted that the material conveying device 5 is a common solid material conveying device on the market, which is composed of multiple sections of spiral conveyors to realize the effect of transferring materials from a low place to a high place, and therefore is not described in detail in this application.

[0088] After the slag is input from the inlet end of the multi-stage gravity separation assembly 3, it is subjected to multi-stage centrifugal gravity separation treatment to effectively separate the metallic iron contained therein from the dregs. Since the metallic iron particles have a large weight, the centrifugal force they receive is greater than that of the dregs, thereby separating the metallic iron particles from the dregs and discharging them separately. The metallic iron particles obtained by the gravity separation assembly are directly input into the transmission assembly 6 for external transmission, while the dregs obtained are sent to another magnetic separation assembly 4 for further iron removal operation. The magnetic separation assembly 4 can further separate the metallic iron particles contained in the dregs and input them into the transmission assembly 6 for external discharge. The dregs passing through the magnetic separation assembly 4 meet the subsequent application requirements, are discharged and collected from the assembly, and are subjected to subsequent application.

[0089] Example 2

[0090] To ensure stable operation of the double-stage crushing assembly and achieve coarse crushing and fine crushing of the slag raw material, the slag is subjected to screening treatment after the coarse crushing and fine crushing operation. The following technical solutions are provided.

[0091] The double-stage crushing assembly includes a coarse crushing mechanism 21 and a fine crushing mechanism. The coarse crushing mechanism 21 includes a treatment cylinder 211, a mounting shaft 212, and crushing hammers 213. The treatment cylinder 211 is fixedly installed on the rack 1, and the bottom of the treatment cylinder is uniformly provided with screening holes. The mounting shaft 212 is rotatably installed in the treatment cylinder 211, and a plurality of groups of mounting discs 2121 are fixedly connected to the mounting shaft 212. A plurality of groups of crushing hammers 213 are rotatably installed on the outer edges of the gaps between adjacent two groups of mounting discs 2121 in a ring array.

[0092] A feed hopper 2112 is fixedly connected to the top of the processing cylinder 211 and is in communication with the inner cavity of the processing cylinder 211. The processed slag raw material is fed into the processing cylinder 211 through the feed hopper 2112 for the first step of rough breaking treatment. The edges of each mounting disc 2121 are provided with mounting shafts 2122 arranged in an annular array. The breaking hammers 213 are mounted on the mounting shafts 2122 in a relative rotation manner.

[0093] In addition, it should be noted that the maximum stroke trajectory of the breaking hammer 213 does not overlap with the inner wall of the processing cylinder 211 during the operation of the mounting shaft 212 and the mounting disc 2121. The space interference between the breaking hammer 213 and the processing cylinder 211 is avoided, and the slag raw material fed into the processing cylinder 211 can be crushed by the breaking hammer 213 during the operation. The slag meeting the particle size requirement can be transferred to the fine breaking mechanism through the screening hole at the bottom of the processing cylinder 211. The slag intercepted by the screening hole is further crushed under the continuous action of the breaking hammer 213 until it is transferred to the fine breaking mechanism through the screening hole.

[0094] The fine breaking mechanism includes a screening cylinder 221, a processing box, and breaking rollers 223. The screening cylinder 221 is mounted on the rack 1 in a relative rotation manner, and the inner wall of the screening cylinder 221 is uniformly fixed with lifting plates 2211 distributed in a radial direction. The processing box is fixedly connected to the rack 1 and arranged inside the screening cylinder 221. The breaking rollers 223 include two groups of breaking rollers 223 mounted on the inside of the processing box in a rotation manner. The same end of the two groups of breaking rollers 223 is fixedly connected with a reversing gear 2231 in engagement. A plurality of breaking ribs 2232 are fixedly connected to the two groups of breaking rollers 223 in a spiral distribution manner. The spiral directions of the breaking ribs 2232 on the two groups of breaking rollers 223 are opposite and in engagement.

[0095] The reversing gears 2231 mounted on the ends of the two groups of breaking rollers 223 are of the same type, which can ensure the stable operation of the two groups of breaking rollers 223 in opposite directions at the same speed.

[0096] The slag after the rough breaking treatment by the rough breaking mechanism 21 is input into the processing box and is subjected to secondary breaking treatment by the two groups of breaking rollers 223 arranged side by side and operating in opposite directions. The breaking ribs 2232 uniformly distributed on the two groups of breaking rollers 223 crush the passing slag to form smaller particles.

[0097] A receiving hopper is fixedly connected to the top of the processing box and is in communication with the inner cavity of the processing box. The bottom of the processing box is provided in an open manner to ensure that the slag after the treatment by the breaking rollers 223 can be normally discharged.

[0098] The slag after the extrusion crushing treatment by the crushing roller 223 falls into the screening cylinder 221 from the bottom of the treatment box, and the screening sleeve makes continuous circular motion around its own axis. In this process, the slag meeting the screening particle size requirement of the screening cylinder 221 falls downward into the corresponding magnetic separation assembly 4 through the screening cylinder 221, and the slag not meeting the screening particle size requirement of the screening cylinder 221 is lifted to above the treatment box under the action of the continuously running screening cylinder 221 and the lifting plate 2211 thereon, and the slag temporarily stored on the lifting plate 2211 falls into the receiving hopper, re-enters the treatment box, and is crushed again by the crushing roller 223 until the particle size of the crushed slag can be discharged downward through the screening cylinder 221.

[0099] It should be noted that the lifting plate 2211 is assembled in the inner wall of the screening cylinder 221 by welding, and a triangular reinforcing plate is welded at the connection between the lifting plate 2211 and the screening cylinder 221 to ensure the stability of the lifting plate 2211 and improve the service life of the screening cylinder 221. The screening cylinder 221 and the lifting plate 2211 inside it do not interfere with the treatment box and the receiving hopper above it during operation.

[0100] To ensure that the screening cylinder 221 can be stably installed on the rack 1 in a relative rotation manner and that the slag screened by the screening cylinder 221 can stably fall to the magnetic separation assembly 4 below, a mounting box 11 is provided on the rack 1, and the crushing mechanism is assembled in the mounting box 11. The outer wall of the treatment box is fixedly connected to the inner wall of the mounting box 11, and two groups of oppositely arranged annular mounting covers 12 are rotatably arranged on the inner wall of the mounting box 11. The end of the screening cylinder 221 is rotatably mounted in the annular mounting cover 12, and the screen hole on the screening cylinder 221 is between the two groups of annular mounting covers 12, so that the slag after screening by the screening cylinder 221 does not enter the annular mounting cover 12 to affect the normal operation of the screening cylinder 221.

[0101] A through opening is provided at the bottom of the mounting box 11 to ensure that the slag after screening by the screening cylinder 221 falls into the magnetic separation assembly 4 below through the through opening. The reversing gear 2231 is also located on the outer side of the mounting box 11.

[0102] On the basis of the above technical scheme of the double-stage crushing assembly, to ensure that the slag after crushing and screening by the coarse crushing mechanism 21 can be stably conveyed to the treatment box in the fine crushing mechanism for secondary crushing treatment, the following technical scheme is provided.

[0103] The double-stage crushing assembly further comprises a transfer assembly, the transfer assembly comprising a transfer cylinder 231, a transfer shaft 232, and spiral conveying blades 233, the upstream end of the transfer cylinder 231 being provided with a receiving port 2311 arranged at the bottom of the processing cylinder 211, the sieve hole being arranged inside the receiving port 2311, the downstream end of the transfer cylinder 231 being communicated to the processing box and arranged above the crushing roller 223, the transfer shaft 232 being rotatably arranged at the center of the transfer cylinder 231 and penetrating through the transfer cylinder 231 and the processing box, and the spiral conveying blades 233 being fixedly connected to the transfer shaft 232 and arranged in the transfer cylinder 231.

[0104] The transfer shaft 232 also penetrates through the mounting box 11, so that the downstream end of the transfer shaft 232 is above the crushing roller 223 and the reversing gear 2231, facilitating the stable transmission of power from the transfer shaft 232 to the crushing roller 223.

[0105] After the slag is crushed by the coarse crushing mechanism 21, the slag falls into the upstream end of the transfer cylinder 231 through the sieve hole arranged on the processing cylinder 211 and the receiving port 2311. During the continuous operation of the spiral conveying blades 233 driven by the transfer shaft 232, the slag in the transfer cylinder 231 can be transferred to the processing box, realizing the transfer of the slag from the coarse crushing mechanism 21 to the fine crushing mechanism.

[0106] Since the transfer cylinder 231 is connected to one side of the processing box, in order to ensure that the slag output from the transfer cylinder 231 can be uniformly distributed on the two sets of crushing rollers 223 and subjected to fine crushing, the crushing ribs 2232 on the crushing rollers 223 are arranged in a spiral shape, and the two sets of crushing rollers 223 are reversely operated, so that the slag on the crushing rollers 223 is transferred from the end close to the transfer cylinder 231 to the end of the raw material transfer cylinder 231, and subjected to fine crushing under the continuous operation of the crushing rollers 223, thereby realizing the uniform distribution of the slag between the two sets of crushing rollers 223 and the crushing effect.

[0107] On the basis of the above technical solutions of the double-stage crushing assembly, in order to ensure that the coarse crushing mechanism 21, the fine crushing mechanism, and the transfer mechanism 23 can stably cooperate and operate, realizing the continuous crushing and screening of the slag raw material, the following technical solutions are provided.

[0108] The double-stage crushing assembly further comprises a driving mechanism 24, which comprises a first driving motor 2401, a first belt pulley 2402 fixed to the mounting shaft 212 and arranged outside the processing box, a second belt pulley 2403 fixed to the transmission shaft 232 and arranged outside the transmission cylinder 231, a first transmission gear 2404 fixed to the transmission shaft 232 and arranged outside the processing box, a second transmission gear 2405 fixed to the end of one of the crushing rollers 223 and arranged outside the processing box, a transmission shaft 2406 rotatably mounted on the rack 1 and arranged above the screening cylinder 221, two sets of transmission sprockets 2407 fixed to the transmission shaft 2406 and the transmission shaft 232, a third transmission gear 2408 fixed to the transmission shaft 2406, and a fourth transmission gear 2409 fixed to the periphery of the screening cylinder 221 and in meshing engagement with the third transmission gear 2408. The first driving motor 2401 is in power connection with the mounting shaft 212, the first belt pulley 2402 and the second belt pulley 2403 are in power connection through a transmission belt 2410, the first transmission gear 2404 is in meshing engagement with the second transmission gear 2405, and the two sets of transmission sprockets 2407 are in power connection through a transmission chain 2411.

[0109] When the first driving motor 2401 operates, it can directly drive the mounting shaft 212 to stably operate, and further drive the crushing hammer 213 to operate at a high speed to realize the coarse crushing operation on the slag in the processing cylinder 211. Under this premise, the transmission shaft 232 and the spiral conveying blade 233 thereon are driven to stably operate by the combination of the first belt pulley 2402, the second belt pulley 2403 and the transmission belt 2410, so as to realize the purpose of transferring the slag from the coarse crushing mechanism 21 to the fine crushing mechanism.

[0110] When the transmission shaft 232 operates, the crushing roller 223 fixed to the second transmission gear 2405 is driven to stably operate by the combination of the first transmission gear 2404 and the second transmission gear 2405, and the other crushing roller 223 is driven to operate at a constant speed in the opposite direction by the combination of the reversing gear 2231, so as to effectively crush the slag in the fine crushing mechanism.

[0111] Meanwhile, when the transmission shaft 232 operates, the transmission shaft 2406 and the third transmission gear 2408 fixed thereto are driven to stably operate by the combination of the transmission sprocket 2407 and the chain, and further drive the fourth transmission gear 2409 and the screening cylinder 221 to stably operate. It should be noted that the transmission shaft 2406 is rotatably mounted in the annular mounting cover 12, and the third transmission gear 2408 and the fourth transmission gear 2409 are arranged in one of the annular mounting covers 12, so as to avoid the slag discharged from the screening cylinder 221 from adhering to the third transmission gear 2408 and the fourth transmission gear 2409 and affecting the normal operation thereof.

[0112] The slag can be continuously crushed, screened and transported by the coarse crushing mechanism 21, the transfer mechanism 23 and the fine crushing mechanism, so that the slag can be effectively crushed and processed without stopping and loading and discharging during the operation of the equipment, and the crushing processing efficiency of the slag is improved, and the purpose of efficiently removing iron from the slag raw material is achieved.

[0113] To ensure that the slag at the bottom of the screening drum 221 can be efficiently screened, and to ensure that the slag lifted by the lifting plate 2211 of the screening drum 221 can be effectively input into the receiving hopper at the top of the processing box, the following technical solutions are provided.

[0114] The outer wall of the screening drum 221 is fixedly connected with an annular gasket 2212, and the fine crushing mechanism further comprises a jolting mechanism 224. The jolting mechanism 224 comprises a cam 2241, a lifting frame 2242, a jolting hammer 2243 and a return spring 2244. The lifting frame 2242 is slidingly installed on the rack 1 and moves up and down in the vertical direction. The cam 2241 is fixedly installed on the transmission shaft 2406 and is matched with the lifting frame 2242. The jolting hammer 2243 is fixedly connected to the bottom of the lifting frame 2242 and abuts against the annular gasket 2212. The return spring 2244 is arranged on the lifting frame 2242 and abuts against the rack 1.

[0115] The annular gasket 2212 and most of the components of the jolting mechanism 224 are arranged in another annular mounting cover 12 different from the third transmission gear 2408 and the fourth transmission gear 2409, so that the slag discharged outside does not affect them.

[0116] The lifting frame 2242 is slidingly installed on the corresponding annular mounting cover 12, and the return spring 2244 is wound around the periphery of the lifting frame 2242 and abuts against the annular mounting cover 12. When the cam 2241 is driven to rotate by the transmission shaft 2406, the lifting frame 2242 and the jolting hammer 2243 are driven to move upward by the cam 2241, and the return spring 2244 is compressed to store elastic potential energy. During further rotation of the cam 2241, the lifting frame 2242 and the jolting hammer 2243 are lowered under the action of the elastic potential energy released by the return spring 2244, and the jolting hammer 2243 strikes the annular gasket 2212 to vibrate the screening drum 221. The vibrating screening drum 221 facilitates the slag meeting the particle size requirement to be discharged from the bottom thereof, and facilitates the slag lifted by the lifting plate 2211 to fall from the lifting plate 2211 into the receiving hopper.

[0117] Since the transmission shaft 2406 rotates under the continuous action of the first driving motor 2401, the screening drum 221 can be continuously and periodically struck and jolted.

[0118] Embodiment 3

[0119] In order to ensure that the magnetic separation assembly 4 can be stably installed on the rack 1, and the magnetic separation operation of the metal iron in the slag is realized by the magnetic separation assembly 4, the following technical scheme is provided.

[0120] The magnetic separation assembly 4 comprises a plurality of groups of conveying rollers arranged in parallel and rotatably installed on the rack 1, and a conveying belt 42 wound on the periphery of the conveying rollers. The conveying belt 42 at least comprises a material guiding section 421 and a magnetic separation section 422 arranged below the material guiding section 421. The material guiding sections 421 of the two groups of magnetic separation assemblies 4 are arranged below the double-stage crushing assembly and the multi-stage gravity separation assembly 3 respectively.

[0121] The rack 1 is fixedly connected with a vertically arranged partition plate 15. The two sides of the two groups of magnetic separation assemblies 4 are arranged with the partition plates 15, and the conveying rollers are rotatably installed on the partition plates 15. For the fine crushing mechanism arranged above the corresponding magnetic separation assembly 4, the mounting box 11 matched therewith is fixed above the corresponding partition plate 15. For the multi-stage gravity separation assembly 3 arranged above the other magnetic separation assembly 4, a bearing plate 16 is fixedly connected to the corresponding partition plate 15, and the multi-stage gravity separation assembly is fixedly installed on the bearing plate 16.

[0122] The arrangement of the partition plate 15 not only ensures the stable rotation of the conveying rollers, but also avoids the outward diffusion of the slag falling on the material guiding section 421, thereby reducing the floating and sinking.

[0123] As a specific embodiment, the conveying rollers in each group of magnetic separation assemblies 4 comprise a first conveying roller 411, a second conveying roller 412, a third conveying roller 413, a fourth conveying roller 414 and a fifth conveying roller 415. The first conveying roller 411 is arranged on one side of the top of the partition plate 15 and at the upstream side of the material guiding section 421. The second conveying roller 412 is arranged at the downstream side of the material guiding section 421 and at the upstream side of the magnetic separation section 422. The third conveying roller 413 is arranged below the first conveying roller 411 and the second conveying roller 412 and at the downstream side of the magnetic separation section 422. The fourth conveying roller 414 and the fifth conveying roller 415 are arranged at the bottom of the partition plate 15 and are used to stably arrange the conveying belt 42 in a closed loop shape.

[0124] The rack 1 is also fixedly installed with an upper mounting plate 13 and a lower mounting plate 14. The upper mounting plate 13 is arranged below the material guiding section 421 and is in close contact with the inner side of the material guiding section 421. The lower mounting plate 14 is arranged above the magnetic separation section 422 and is in close contact with the inner side of the magnetic separation section 422.

[0125] The magnetic separation assembly 4 further comprises electromagnets 43 and permanent magnets 44. The electromagnets 43 are uniformly arranged on the upper mounting plate 13 and the lower mounting plate 14 and are in close contact with the conveying belt. The permanent magnets 44 are uniformly arranged on the conveying rollers arranged at the connection between the material guiding section 421 and the magnetic separation section 422.

[0126] The permanent magnet 44 is actually mounted on the second conveyor roller 412. The upper mounting plate 13 is the same length as the guide section 421. That is, the electromagnets 43 mounted on the upper mounting plate 13 are evenly distributed on the guide section 421. The length of the lower mounting plate 14 is half the length of the magnetic separation section 422. That is, the lower mounting plate 14 extends from the second conveyor roller 412 to the middle section of the magnetic separation section 422. In other words, the upper half of the magnetic separation section 422 is equipped with electromagnets 43.

[0127] The slag, after being crushed by the fine crushing component, falls from the bottom of the mounting box 11 onto the guide section 421 of the corresponding magnetic separation component 4. The slag separated by the multi-stage gravity separation component 3 falls onto the guide section 421 of another magnetic separation component 4. The slag and slag are transported downstream of the guide section 421 by the conveyor belt 42. The metallic iron contained therein is attracted by the electromagnet 43 and the permanent magnet 44 and transported to the magnetic separation section 422 by the conveyor belt 42, while the remaining part is not magnetic and is discharged from the downstream end of the guide section 421 (i.e., outside the second conveyor belt 42).

[0128] A guide plate 17 arranged below the guide section 421 is also fixed to the partition plate 15 to ensure that non-metallic iron particles can flow outward along the guide plate 17. For the magnetic separation component 4 below the fine crushing component, a storage tank 18 is installed on the outer side of the corresponding guide plate 17. The slag after magnetic separation falls into the storage tank 18 along the guide plate 17. The bottom of the storage tank 18 is connected to the material conveying device 5, which transports it to the multi-stage gravity separation component 3.

[0129] For the magnetic separation component 4 below the multi-stage gravity separation component 3, the slag separated by the multi-stage gravity separation component 3 is processed by the corresponding magnetic separation component 4 and flows outward along the corresponding material plate for unified collection, resulting in the iron-removed slag product.

[0130] For the metal particles that travel along the conveyor belt 42 to the magnetic separation section 422, when they reach the end of the lower mounting plate 14, the magnetic force disappears, and the metal particles are separated from the upper conveyor belt 42 magnetic separation section 422 by gravity, and finally fall into the transmission component 6 for unified external discharge.

[0131] To ensure that the transmission component 6 can be stably installed on the rack 1 and can effectively collect and transmit the metal iron particles selected by the magnetic separation component 4, and to realize the coordinated operation of the magnetic separation component 4 and the transmission component 6, the following technical solution is provided.

[0132] The transmission assembly 6 includes a side baffle 61, a transmission roller 62, and a transmission belt 63. The side baffle 61 passes through the two sets of magnetic separation assemblies 4 and is located below the magnetic separation section 422. The transmission roller 62 is rotatably mounted on both ends of the side baffle 61. The transmission belt 63 is wound around the transmission roller 62. A scraper that fits against the outer surface of the magnetic separation section 422 is fixedly connected to the side baffle 61.

[0133] The bottom of each partition plate 15 is provided with an assembly opening 151 to ensure that the side baffle 61 is stably arranged through the assembly opening 151, and the arrangement of the side baffle 61 can ensure that the transmission roller 62 and the transmission belt 63 are stably assembled thereon, and meanwhile, the transmission of the metal iron particles from both sides of the transmission belt 63 is avoided.

[0134] No electromagnet 43 is arranged at the lower half of the magnetic separation section 422, the metal iron particles running to this position are not magnetically adsorbed and fall under gravity to the transmission belt 63, and the arrangement of the scraper can clearly and completely collect the electromagnet on the magnetic separation section 422 on the transmission belt 63, and the metal iron particles are transmitted outward by the transmission of the transmission roller 62 and the transmission belt 63.

[0135] One of the two groups of conveying rollers of the magnetic separation assembly 4 is coaxially fixed through the connecting shaft 4151, and the end of one of the conveying rollers connected with the connecting shaft 4151 is fixedly connected with a first bevel gear 4152, the end of the transmission roller 62 is fixedly connected with a second bevel gear 621 which is in meshing connection with the first bevel gear 4152, and the end of the first bevel gear 4152 is power-connected with a second driving motor 4153 which is fixedly installed on the rack 1.

[0136] In practical application, the five conveying rollers 415 in the two groups of magnetic separation assemblies 4 are fixedly connected through the connecting shaft 4151, and the five conveying rollers 415 are provided with the first bevel gear 4152 and the second driving motor 4153, the second driving motor 4153 drives the first bevel gear 4152 and the five conveying rollers 415 in the two groups of magnetic separation assemblies 4 to stably operate, and further drives the conveying belt 42 in each magnetic separation assembly 4 to stably operate, and when the first bevel gear 4152 operates, the second bevel gear 621 and the transmission roller 62 fixedly connected therewith are driven to stably operate, so as to achieve the purpose of driving the transmission belt 63 to stably operate.

[0137] Embodiment 4

[0138] In order to ensure that the multi-stage gravity separation assembly 3 can efficiently separate the slag input thereinto and ensure that the iron particles and the dregs are distinguished as much as possible, the following technical solutions are provided.

[0139] The multi-stage gravity separation assembly 3 comprises: an installation shell 31 fixedly installed on the rack 1, a rotating shaft 32 rotatably installed at the shaft center of the installation shell 31 and arranged in the vertical direction, a cloth cap 33 fixedly installed on the top of the installation shell 31, a plurality of layers of main cloth plates 34 and auxiliary cloth plates 35 fixedly inserted on the rotating shaft 32, a plurality of layers of guide rings 36 fixedly connected to the inner wall of the installation shell 31, a feeding plate 37 rotatably installed at the bottom of the installation shell 31, and a third driving motor 38 fixedly installed on the rack 1 and power-connected with the rotating shaft 32 and the feeding plate 37.

[0140] The bottom of the installation shell 31 is fixed with a support 316, and the support 316 and the third driving motor 38 are fixedly installed on the bearing plate 16 of the rack 1, so as to ensure that the multi-stage gravity separation assembly 3 can be stably installed on the bearing plate 16 of the rack 1. The third driving motor 38 can drive the rotating shaft 32 and the main distributing disc 34 and the auxiliary distributing disc 35 assembled on the rotating shaft 32 to stably operate, and can also drive the feeding plate 37 to stably operate, so as to quickly discharge the separated metal iron particles and slag falling into the bottom of the installation shell 31.

[0141] The top of the installation shell 31 is provided with a feeding opening 311 connected with the material conveying device 5, and the bottom end of the feeding opening 311 is provided with a feeding passage 312 connected to the inside of the installation shell 31, and the feeding passage 312 is arranged above the distributing cap 33.

[0142] The feeding opening 311 can be stably connected with the material conveying device 5, and the slag collected in the storage barrel 18 can be effectively conveyed from the feeding opening 311 and the feeding passage 312 into the inner cavity of the installation shell 31 by means of the material conveying device 5, and then uniformly distributed to the uppermost main distributing disc 34 by means of the distributing cap 33.

[0143] It should be noted that the outer diameter of the main distributing disc is greater than the outer diameter of the distributing cap 33, so as to ensure that the slag falling on the distributing cap 33 falls completely into the main distributing disc.

[0144] Each group of auxiliary distributing discs 35 and guide rings 36 are arranged at the gap between adjacent main distributing discs 34, and the shaft centers of the main distributing discs 34 and the auxiliary distributing discs 35 are respectively provided with main nesting seats 341 and auxiliary nesting seats 351, which are slidably connected with the rotating shaft 32. The main nesting seat 341 is fixedly connected with the main distributing disc 34 and is provided with an annular storage groove 342, and the annular storage groove 342 is provided with a guide passage 343. The auxiliary distributing disc 35 is fixedly connected with a guide disc 352 arranged below the guide passage 343, and the guide disc 352 is fixedly connected with the auxiliary nesting seat 351.

[0145] It should be noted that the inner diameter of the guide ring 36 is smaller than the outer diameter of the main distributing disc 34, so that the slag flying out from the outer edge of the main distributing disc 34 can fall into the guide ring 36, and the slag falling into the guide ring 36 can be guided into the main distributing disc 34 of the next layer under the guidance of the guide ring 36.

[0146] The ratio of the metal iron particles contained in the slag flying out from the outer edge of the main distributing disc 34 is relatively large (the weight of the metal iron particles is relatively large, and the centrifugal force is large), and the ratio of the metal iron particles contained in the material sliding into the annular storage groove 342 is relatively small.

[0147] The outer diameter of the secondary material distribution disc 35 is smaller than the outer diameter of the primary material distribution disc 34 and the inner diameter of the material guide ring 36, and the annular material storage groove 342 on the primary nesting seat 341 is used to store the slag flowing inward along the primary material distribution disc 34 and is transported to the secondary material distribution disc 35 through the material guide opening 343 and the material guide disc 352, and the secondary material distribution disc 35 further centrifugally separates the part of the slag, and the materials of different weights on the secondary material distribution disc 35 fall into the primary material distribution disc 34 of the next layer from the outer edge and the inner edge of the secondary material distribution disc 35, respectively, and the materials falling from the outer edge are subjected to a large centrifugal force and have a certain percentage of metal iron particles, and are re-centrifugally selected by the primary material distribution disc 34 of the next layer, while the materials falling from the inner edge of the secondary material distribution disc 35 almost do not have metal iron particles.

[0148] The arrangement of the primary material distribution disc 34, the secondary material distribution disc 35, the material guide ring 36, and the material guide disc 352 in series can effectively separate the metal iron particles from the dregs as much as possible.

[0149] It should be noted that in order to ensure that the primary material distribution disc 34, the secondary material distribution disc 35, the material guide ring 36, and the material guide disc 352 are effectively stacked, the installation shell 31 is designed in multiple sections, that is, the inner edge of each layer of the installation shell 31 is fixedly connected with the material guide ring 36, so as to sequentially stack and assemble the structures from bottom to top.

[0150] In addition, in order to ensure that the material guide disc 352 can be effectively combined with the secondary material distribution disc 35 below, the connecting ring 353 is fixedly connected below the material guide disc 352, the connecting ring 353 is fixedly connected with the secondary material distribution disc 35 at the bottom, and the material guide through hole 354 is arranged on the side wall of the connecting ring 353, so as to ensure that the materials stably run on the secondary material distribution disc 35.

[0151] The installation shell 31 is fixedly connected with the annular isolation seat 313 at the bottom, the outer discharge port 314 and the inner discharge port 315 are arranged on the outer side and the inner side of the annular isolation seat 313, respectively, and the feeding plate 37 is attached to the bottom of the installation shell 31.

[0152] The metal iron particles finally fall into the outer side of the annular isolation seat 313 from the outer edge of the primary material distribution disc 34 of the lowermost layer, and the separated dregs finally fall into the inner side of the annular isolation seat 313 from the annular material storage groove 342 and the material guide opening 343 on the inner side of the primary material distribution disc 34 of the lowermost layer, and the dregs and the metal iron particles on the inner side and the outer side of the annular isolation seat 313 are discharged outward along the inner discharge port 315 and the outer discharge port 314 during the operation of the feeding plate 37.

[0153] An inner discharge port 315 is connected to a slag discharge pipe 317 arranged above the corresponding guide section 421 (the guide section 421 on the conveyor belt 42 in the magnetic separation assembly 4), so that the separated slag is fed into the second set of magnetic separation assemblies 4 along the slag discharge pipe 317 for secondary magnetic separation treatment. An iron particle discharge pipe 318 is connected to the outer discharge port 314, and the other end of the iron particle discharge pipe 318 is connected to a dust cover 319 installed on the side baffle 61, so that the separated metal iron particles are directly guided into the transmission assembly 6 for external discharge.

[0154] Based on the above technical solution for the multi-stage reselection component 3, in order to ensure that the feeding plate 37 can be stably installed at the bottom of the mounting housing 31, and to ensure that the No. 3 drive motor 38 can drive the rotating shaft 32 and the feeding plate 37 to operate stably and independently, the following technical solution is provided.

[0155] A rotating seat 371 is rotatably mounted on the bottom of the mounting housing 31. Multiple sets of feeding plates 37 are evenly fixed on the rotating seat 371. A rotating shaft 32 is rotatably mounted at the center of the rotating seat 371. A first transmission bevel gear 372 and a second transmission bevel gear 321, arranged on the outside of the mounting housing 31, are respectively fixed to the bottom of the rotating seat 371 and the rotating shaft 32. A first drive bevel gear 381 and a second drive bevel gear 382 are fixed to the shaft of the third drive motor 38. The first drive bevel gear 381 and the first transmission bevel gear 372 are meshed, and the second drive bevel gear 382 and the second transmission bevel gear 321 are meshed.

[0156] The No. 3 drive motor 38 drives the No. 1 drive bevel gear 381 and the No. 2 drive bevel gear 382 to operate stably. The No. 1 drive bevel gear 381 and the No. 1 transmission bevel gear 372 drive the rotating seat 371 and the feeding plate 37 to operate stably. The No. 2 drive bevel gear 382 and the No. 2 transmission bevel gear 321 drive the rotating shaft 32 and each main material feeding disc 34 and auxiliary material feeding disc 35 to operate stably.

[0157] Example 5

[0158] An integrated high-efficiency iron removal process for slag raw materials, used to remove iron from the aforementioned integrated high-efficiency iron removal equipment for slag raw materials, includes the following steps:

[0159] S1. Crushing process

[0160] The slag is fed into the coarse crushing mechanism 21, and the slag is coarsely crushed by the running mounting shaft 212 and the crushing hammer 213. The crushed slag is screened by the screening hole at the bottom of the processing cylinder 211. The slag that passes through the screening hole is transferred to the fine crushing mechanism by the transfer mechanism 23. The slag that passes through the screening hole is continuously crushed by the crushing hammer 213 until it passes through the screening hole.

[0161] The slag entering the fine crushing assembly is subjected to fine crushing by the crushing roller 223, and the crushed slag is subjected to screening by the screening cylinder 221, and the slag not passing through the screening cylinder 221 is continuously crushed by the crushing roller 223 under the driving of the screening cylinder 221 until passing through the screening cylinder 221;

[0162] S2, primary magnetic separation treatment,

[0163] The slag passing through the screening cylinder 221 falls into the magnetic separation assembly 4 below, and the separated metallic iron in the slag is separated by the magnetic separation assembly 4 and conveyed onto the conveying assembly 6;

[0164] S3, gravity separation treatment,

[0165] The slag subjected to the primary magnetic separation treatment in step S2 is transferred to the multi-stage gravity separation assembly 3 by the material conveying device 5, and the slag is separated into metallic iron particles and dregs by the multi-stage gravity separation assembly 3, and the metallic iron particles are directly conveyed onto the conveying assembly 6;

[0166] S4, secondary magnetic separation treatment,

[0167] The dregs separated in step S3 are introduced into the magnetic separation assembly 4 below, and the separated metallic iron in the dregs is further separated by the magnetic separation assembly 4 and conveyed onto the conveying assembly 6, and the metallic iron particles carried on the conveying assembly 6 are conveyed outward, and the dregs after the magnetic separation assembly 4 are used as slag raw materials in downstream production activities.

[0168] When the slag is subjected to efficient iron removal by the slag raw material integrated efficient iron removal device provided in the present application, the slag is sequentially subjected to crushing treatment, primary magnetic separation treatment, gravity separation treatment, and secondary magnetic separation treatment by the slag raw material integrated efficient iron removal process provided in the present application, so as to obtain high-quality slag for subsequent production and processing of the slag.

[0169] The double-stage crushing assembly, the two sets of magnetic separation assemblies 4, and the multi-stage gravity separation assembly 3 can continuously treat the slag, and each component does not need to be stopped for feeding and discharging during the treatment of the slag. The slag can be continuously input from the feeding hopper 2112 in the coarse crushing mechanism 21, the high-quality dregs separated can be continuously output from the guide plate 17 matched with the second set of magnetic separation assemblies 4, and the metallic iron particles separated can be continuously output from the conveying assembly 6, so as to effectively improve the efficiency of iron removal from the slag raw materials.

[0170] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0171] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A high-efficiency iron removal device for slag raw materials, characterized in that: Includes a frame (1) and a dual-stage crushing assembly, a multi-stage gravity separation assembly (3), and a magnetic separation assembly (4) that are installed on the frame (1) and maintain a matching assembly; The dual-stage crushing assembly is used to sequentially perform coarse crushing and fine crushing on slag raw materials, as well as to perform screening during the coarse and fine crushing processes. The multi-stage gravity separation component (3) is used to perform multi-stage gravity separation on the crushed slag raw material to achieve the separation of metallic iron and slag; The magnetic separation component (4) includes two sets. One set of magnetic separation component (4) is installed at the discharge end of the double-stage crushing component and is used to receive the discharge of the double-stage crushing component for magnetic separation. The slag raw material through the magnetic separation component (4) is transferred to the inlet end of the multi-stage gravity separation component (3) through the material conveying equipment (5). The other set of magnetic separation component (4) is installed at the bottom of the multi-stage gravity separation component (3) and is used to receive the discharged slag for magnetic separation. The slag through the magnetic separation component (4) completes the iron removal process. It also includes a transmission component (6) that is combined with the two sets of magnetic separation components (4), the transmission component (6) being used to receive the metal iron selected by the two sets of magnetic separation components (4) and transmit it outward; The multi-stage reselection assembly (3) includes: a mounting housing (31) fixedly mounted on the frame (1), a rotating shaft (32) rotatably mounted on the axis of the mounting housing (31) and arranged in the vertical direction, a fabric cap (33) fixedly mounted on the top of the mounting housing (31), a multi-layer main fabric disc (34) and a secondary fabric disc (35) fixedly inserted into the rotating shaft (32), a multi-layer guide ring (36) fixedly connected to the inner wall of the mounting housing (31), a feeding plate (37) rotatably mounted on the bottom of the mounting housing (31), and a No. 3 drive motor (38) fixedly mounted on the frame (1) and maintaining a power connection with the rotating shaft (32) and the feeding plate (37). The top of the mounting housing (31) is provided with a feeding port (311) that communicates with the material conveying equipment (5), and the bottom of the feeding port (311) is provided with a feeding passage (312) that communicates with the inside of the mounting housing (31), and the feeding passage (312) is arranged above the fabric cap (33). Each set of auxiliary fabric trays (35) and guide rings (36) is arranged in the gap between adjacent main fabric trays (34). The main fabric trays (34) and auxiliary fabric trays (35) are respectively provided with a main nesting seat (341) and an auxiliary nesting seat (351) at their axial centers. The main nesting seat (341) and the auxiliary nesting seat (351) are slidably inserted with the rotating shaft (32). The main nesting seat (341) is fixedly connected to the main fabric tray (34) and a ring is provided on the main nesting seat (341). A circular storage trough (342) is provided, and a guide port (343) is provided on the circular storage trough (342). A guide plate (352) arranged below the guide port (343) is fixedly connected above the auxiliary material distribution plate (35). The guide plate (352) is fixedly connected to the auxiliary nesting seat (351). The inner diameter of the guide ring (36) is smaller than the outer diameter of the main material distribution plate (34), and the outer diameter of the auxiliary material distribution plate (35) is smaller than the outer diameter of the main material distribution plate (34) and smaller than the inner diameter of the guide ring (36). The bottom of the mounting housing (31) is fixedly connected to an annular isolation seat (313). The bottom of the mounting housing (31) has an outer discharge port (314) and an inner discharge port (315) respectively arranged on the inner and outer sides of the annular isolation seat (313). The feeding plate (37) is in close contact with the bottom of the mounting housing (31).

2. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 1, characterized in that: The dual-stage crushing assembly includes a coarse crushing mechanism (21) and a fine crushing mechanism. The coarse crushing mechanism (21) includes a processing cylinder (211), a mounting shaft (212), and a breaker hammer (213). The processing cylinder (211) is fixedly installed on the frame (1), and screening holes are evenly opened at the bottom of the processing cylinder. The mounting shaft (212) is rotatably installed in the processing cylinder (211), and multiple sets of mounting discs (2121) arranged side by side are fixedly connected to the mounting shaft (212). Multiple sets of breaker hammers (213) arranged in a ring array are rotatably installed on the outer edge of the gap between two adjacent sets of mounting discs (2121). The fine crushing mechanism includes a screening cylinder (221), a processing box, and crushing rollers (223). The screening cylinder (221) is mounted on the frame (1) in a relatively rotatable manner, and radially distributed lifting plates (2211) are uniformly fixed to the inner wall of the screening cylinder (221). The processing box is fixedly connected to the frame (1) and arranged inside the screening cylinder (221). The crushing rollers (223) include two sets rotatably installed inside the processing box. The same end of the two sets of crushing rollers (223) is fixedly connected to a reversing gear (2231) that maintains meshing. Multiple sets of crushing ribs (2232) distributed in a spiral shape are fixedly connected to the two sets of crushing rollers (223). The crushing ribs (2232) on the two sets of crushing rollers (223) have opposite spiral directions and maintain meshing.

3. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 2, characterized in that: The dual-stage crushing assembly also includes a transfer assembly, which includes a transfer cylinder (231), a transfer shaft (232), and a spiral conveyor blade (233). The upstream end of the transfer cylinder (231) is equipped with a receiving port (2311) arranged at the bottom of the processing cylinder (211). The screening hole is arranged inside the receiving port (2311). The downstream end of the transfer cylinder (231) is connected to the processing box and arranged above the crushing roller (223). The transfer shaft (232) is rotatably mounted on the axis of the transfer cylinder (231) and passes through the transfer cylinder (231) and the processing box. The spiral conveyor blade (233) is fixed to the transfer shaft (232) and arranged in the transfer cylinder (231).

4. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 3, characterized in that: The dual-stage crushing assembly also includes a drive mechanism (24), which comprises: a first drive motor (2401), a first pulley (2402) fixed to the mounting shaft (212) and arranged outside the processing box, a second pulley (2403) fixed to the transmission shaft (232) and arranged outside the transmission cylinder (231), a first transmission gear (2404) fixed to the transmission shaft (232) and arranged outside the processing box, a second transmission gear (2405) fixed to the end of one set of crushing rollers (223) and arranged outside the processing box, and a transmission shaft (2406) rotatably mounted on the frame (1) and arranged above the screening cylinder (221). Two sets of transmission sprockets (2407) are fixed to the transmission shaft (2406) and the transmission shaft (232), a third transmission gear (2408) is fixed to the transmission shaft (2406), and a fourth transmission gear (2409) is fixed to the periphery of the screening cylinder (221) and meshes with the third transmission gear (2408); the first drive motor (2401) is powered by the mounting shaft (212), the first pulley (2402) and the second pulley (2403) are powered by the transmission belt (2410), the first transmission gear (2404) and the second transmission gear (2405) are meshed, and the two sets of transmission sprockets (2407) are powered by the transmission chain (2411).

5. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 4, characterized in that: The outer wall of the screening cylinder (221) is fixedly connected to an annular washer (2212). The fine crushing mechanism also includes a vibrating mechanism (224). The vibrating mechanism (224) includes a cam (2241), a lifting frame (2242), a vibrating hammer (2243), and a return spring (2244). The lifting frame (2242) is slidably installed on the frame (1) and moves up and down in the vertical direction. The cam (2241) is fixedly installed on the transmission shaft (2406) and fits against the lifting frame (2242). The vibrating hammer (2243) is fixedly connected to the bottom of the lifting frame (2242) and abuts against the annular washer (2212). The return spring (2244) is assembled on the lifting frame (2242) and abuts against the frame (1).

6. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 1, characterized in that: The magnetic separation assembly (4) includes multiple sets of parallel conveyor rollers rotatably mounted on the frame (1) and a conveyor belt (42) wrapped around the periphery of the conveyor rollers. The conveyor belt (42) includes at least a continuously arranged guide section (421) and a magnetic separation section (422). The magnetic separation section (422) is arranged below the guide section (421). The guide sections (421) in the two sets of magnetic separation assemblies (4) are respectively arranged below the dual-stage crushing assembly and the multi-stage gravity separation assembly (3). The frame (1) is also fixedly installed with an upper mounting plate (13) and a lower mounting plate (14). The upper mounting plate (13) is arranged below the material guide section (421) and is in close contact with the inner side of the material guide section (421). The lower mounting plate (14) is arranged above the magnetic separation section (422) and is in close contact with the inner side of the magnetic separation section (422). The magnetic separation component (4) also includes an electromagnet (43) and a permanent magnet (44). The electromagnet (43) is uniformly mounted on the upper mounting plate (13) and the lower mounting plate (14) and is in close contact with the conveyor belt. The permanent magnet (44) is uniformly mounted on the conveyor roller arranged at the connection of the material guiding section (421) and the magnetic separation section (422).

7. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 6, characterized in that: The transmission assembly (6) includes a side baffle (61), a transmission roller (62), and a transmission belt (63). The side baffle (61) passes through the two sets of magnetic separation assemblies (4) and is located below the magnetic separation section (422). The transmission roller (62) is rotatably mounted on both ends of the side baffle (61). The transmission belt (63) is wound around the transmission roller (62). A scraper that fits against the outer surface of the magnetic separation section (422) is fixedly connected to the side baffle (61). One set of conveyor rollers of the two sets of magnetic separation components (4) are coaxially fixed through a connecting shaft (4151), and a first bevel gear (4152) is fixedly connected to the end of one set of conveyor rollers connected to the connecting shaft (4151), and a second bevel gear (621) that meshes with the first bevel gear (4152) is fixedly connected to the end of one set of conveyor rollers (62). The end of the first bevel gear (4152) is powered by a second drive motor (4153) that is fixedly installed on the frame (1).

8. The integrated high-efficiency iron removal equipment for slag raw materials according to claim 1, characterized in that: The bottom of the mounting housing (31) is rotatably mounted with a rotating seat (371). Multiple sets of feeding plates (37) are evenly fixed on the rotating seat (371). The rotating shaft (32) is rotatably mounted at the center of the rotating seat (371). The bottom of the rotating seat (371) and the rotating shaft (32) are respectively fixed with a first transmission bevel gear (372) and a second transmission bevel gear (321) arranged on the outside of the mounting housing (31). The shaft of the third drive motor (38) is fixed with a first drive bevel gear (381) and a second drive bevel gear (382). The first drive bevel gear (381) and the first transmission bevel gear (372) are meshed, and the second drive bevel gear (382) and the second transmission bevel gear (321) are meshed.

9. An integrated high-efficiency iron removal process for slag raw materials, used for iron removal from the integrated high-efficiency iron removal equipment for slag raw materials as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Crushing process The slag is fed into the coarse crushing mechanism (21), and the slag is coarsely crushed by the running mounting shaft (212) and the breaker hammer (213). The crushed slag is screened by the screening hole at the bottom of the processing cylinder (211). The slag that passes through the screening hole is transferred to the fine crushing mechanism by the transfer mechanism (23). The slag that does not pass through the screening hole is continuously crushed by the breaker hammer (213) until it passes through the screening hole. The slag entering the fine crushing assembly is finely crushed by the crushing roller (223), and the crushed slag is screened by the screening cylinder (221). The slag that does not pass through the screening cylinder (221) is continuously crushed by the crushing roller (223) under the drive of the screening cylinder (221) until it passes through the screening cylinder (221). S2, Primary magnetic separation treatment. The slag passing through the screening cylinder (221) falls into the magnetic separation component (4) below, and the metallic iron separated from the slag is separated by the magnetic separation component (4) and transported to the transmission component (6). S3, Reselection Processing The slag after primary magnetic separation in step S2 is transferred to a multi-stage gravity separation unit (3) by means of a material conveying device (5). The multi-stage gravity separation unit (3) separates the slag into metallic iron particles and slag, and the metallic iron particles are directly conveyed to the transmission unit (6). S4, Secondary magnetic separation treatment. The slag separated in step S3 is passed into the magnetic separation component (4) below. The magnetic separation component (4) further separates the metallic iron in the slag and transports it to the transmission component (6). The transmission component (6) transports the metallic iron particles it carries to the outside. The slag after passing through the magnetic separation component (4) is used as slag raw material in downstream production activities.

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