CN116747936B - Steel slag jaw crushing and separating assembly, separating and treating system and molten steel slag treating method - Google Patents

Abstract

The application relates to the technical field of overall arrangement of separation equipment, in particular to a steel slag jaw crushing and separating assembly, a separation treatment system and a molten steel slag treatment method; the device comprises a jaw crushing unit and a feeding unit, wherein the jaw crushing unit is used for crushing steel slag, and the other end of the feeding unit is arranged at the feeding end of the jaw crushing unit; the jaw crushing unit is fixed on the upper layer of the platform, the screening unit is arranged on the lower layer of the platform, and the discharging end of the jaw crushing unit is connected with the feeding end of the screening unit; a discharging unit is arranged at the lower side of the screening unit; the side part of the screening unit is provided with a circulating unit, the circulating unit corresponds to a side part discharge hole of the screening unit, and the other end of the circulating unit is connected to the middle position of the feeding unit; the primary crushed products which are screened out by the screening unit and are larger than the particle size requirement are discharged from a lateral discharge port and enter a circulation unit; and returning the primary crushed products with the particle size larger than the particle size requirement to the feeding unit through the circulating unit, and re-entering the jaw crushing unit for re-crushing.

Description

Steel slag jaw crushing and separating assembly, separating and treating system and molten steel slag treating method

Technical Field

The application relates to the technical field of overall arrangement of separation equipment, and simultaneously belongs to the technical field of treatment of iron alloy in a molten state; also belongs to the field of comprehensive utilization of waste smelting gas and waste slag of iron and steel enterprises; in particular to a steel slag jaw crushing and separating assembly, a separating and treating system and a molten steel slag treating method.

Background

The current steel slag is slag discharged in the steelmaking process, and comprises oxides formed by oxidizing various elements in the metal furnace charge, impurities in the metal furnace charge, calcined products of adjustable substances such as limestone and the like; the steel slag contains about 20 percent of slag iron, calcium-magnesium-aluminum oxide, silicate and other substances; the iron in the steel slag can be partially recycled through magnetic separation and the like. The steel slag is high in temperature, and firstly, the heat contained in the steel slag is recovered by treatment of the steel slag through a heat recovery process; and then the steel slag is crushed by a steel slag hot crushing process, and steel blocks in the steel slag are recovered by a magnetic separator.

For example, chinese patent publication No. CN109261273A discloses a device for mechanical thermal crushing and waste heat recovery of steel slag, wherein a rotary drum is arranged in a crushing cavity, screw teeth are arranged on the rotary drum, and a discharge hole is arranged at the lowest end of the crushing cavity; after the steel slag is crushed by the rotary drum, discharging the steel slag from a discharge hole, so as to realize the crushing of the steel slag; some steel blocks after the roller is crushed do not meet the recycling grain size, the steel blocks are different in size, and the steel slag which does not meet the grain size requirement cannot be crushed again.

The problems with the prior art are therefore: how to reprocess the steel slag which does not meet the broken grain size.

Disclosure of Invention

The application provides a steel slag jaw crushing and separating assembly, a separation and treatment system and a molten steel slag treatment method, and aims to solve the problem of reprocessing steel slag which does not meet the crushing grain size.

The first aspect of the application provides a steel slag jaw crushing and separating assembly, which comprises a jaw crushing unit and a feeding unit, wherein the jaw crushing unit is used for crushing steel slag, and the other end of the feeding unit is arranged at the feeding end of the jaw crushing unit; the jaw crushing unit is fixed on the upper layer of the platform, the screening unit is arranged on the lower layer of the platform, and the discharging end of the jaw crushing unit is connected with the feeding end of the screening unit; a discharging unit is arranged at the lower side of the screening unit and is used for receiving the primary crushed products meeting the crushing particle size requirement; the lateral part of the screening unit is provided with a circulating unit, the circulating unit corresponds to a lateral part discharge hole of the screening unit, and the other end of the circulating unit is connected to the middle position of the feeding unit.

Further, the screening unit comprises an upper shell with a feed inlet and a lower shell with a discharge outlet; the side part of the upper shell is provided with a side part discharge hole; a screen plate is arranged in the upper shell, and a vibrating motor is arranged at the bottom of the screen plate.

Further, the jaw crushing unit comprises a feeding and distributing pipe, and the upper end of the feeding and distributing pipe is connected with a conical feeding chute; two ends of the lower side of the jaw crusher are respectively connected with the jaw crusher; the discharge side of the jaw crusher is connected with the screening unit through a discharge material dividing pipe.

The second aspect of the application provides a separation treatment system, which comprises the steel slag jaw crushing and separating assembly and the magnetic separation assembly, wherein the magnetic separation assembly is arranged on one side of the discharging unit far away from the screening unit and is used for conveying and transferring primary crushed products, and the magnetic separation assembly comprises a separation conveying unit and a magnetic separation unit, wherein the separation conveying unit is used for receiving and conveying the primary crushed products, and the magnetic separation unit is used for separating steel blocks from the primary crushed products; the magnetic separation unit is arranged above the separation conveying unit.

Further, the magnetic separation unit comprises a plate-type magnetic separator and a plurality of supporting legs, the supporting legs are arranged side by side, the upper sides of the supporting legs are connected together through a cross beam, and a guide rail screw sliding table is oppositely arranged on the upper side of the cross beam; the plate-type magnetic separator is fixed on the guide rail screw sliding table through a mounting plate; a baffle frame for baffle block steel is arranged between the supporting legs, and the baffle frame is fixed with a sliding block of the guide rail screw sliding table.

Further, the bottom of the guide rail screw sliding table is provided with a through sliding table slideway; the bottom of the sliding block is provided with a connecting plate, the connecting plate penetrates out of the sliding table slideway, and the end part of the connecting plate is provided with a buffer channel; the end of the baffle frame is provided with a buffer column which is in sliding fit in the buffer channel, and a first compression spring penetrates through the buffer column between the connecting plate and the baffle frame.

Further, the separation conveying unit comprises a chain conveying seat, rotating shafts are arranged on two sides of the chain conveying seat, and the driving device drives the rotating shafts to rotate; two chain block chain wheels are oppositely arranged on the rotating shaft, and the chain block chain wheels on two sides are in transmission connection through a chain; connecting blocks are arranged on vertical chain links of the chain, sliding shafts are arranged between the connecting blocks, and sliding frames are in sliding fit with the sliding shafts; the middle of the sliding shaft is provided with an annular clamping plate, and two sides of the sliding shaft are respectively provided with a restoring spring which is used for driving the sliding frame to swing transversely and then reset; the bearing groove is arranged on the bearing plate and is used for bearing and transferring the primary crushed products; a guide frame is arranged on the chain type conveying seat; the guide frame is used for driving the bearing groove to swing.

Further, the bearing groove is fixed on the sliding frame, one side of the sliding frame is fixed with a transverse guide wheel through the first linkage plate, the other side of the sliding frame is provided with the second linkage plate, and the second linkage plate is in sliding fit with the third linkage plate; the third linkage plate is provided with a transverse guide wheel; the transverse guide wheel is matched in the guide frame, the guide frame is of a C-shaped channel steel structure, and the bottom of the channel steel is provided with an arc-shaped protruding block.

Further, the bearing groove is hinged on the sliding frame, and the two sides of the sliding frame are respectively provided with a fourth linkage plate; the bottoms of the two sides of the bearing groove are fixed with a fourth linkage plate through a third compression spring; one end of the rope is fixed on the bearing groove, the fixed point is positioned in the third compression spring, the other end of the rope passes through the fourth linkage plate and bypasses the broken line guide wheel to be fixed on the side part of the connecting block; meanwhile, the end parts of the two sides of the bearing groove are fixed with the vertical guide wheel through a fifth linkage plate; the vertical guide wheel is in contact fit with the guide frame, the guide frame is of a plate-shaped structure, and the upper side of the guide frame is wavy.

Further, the bearing groove is hinged on the sliding frame, and two sides of the sliding frame are fixed with the guide post through a sixth linkage plate; the bottoms of the two sides of the bearing groove are fixed with a sixth linkage plate through a fourth compression spring; one end of the rope is fixed on the bearing groove in the fourth compression spring, and the other end of the rope passes through the sixth linkage plate and bypasses the broken line guide wheel to be fixed on the side part of the connecting block; the guide post is matched in the guide groove of the guide frame.

Further, the separation conveying unit comprises a rubber belt conveyor, a knocking motor is arranged on a rack of the rubber belt conveyor, and a cam-shaped knocking part is arranged on a motor shaft of the knocking motor; the knocking motor drives the knocking part to rotate, so that the knocking part knocks the upper belt of the belt conveyor; the primary crushed products are knocked, so that auxiliary steel blocks are adsorbed and separated from the primary crushed products; in order to avoid that the primary crushed products fall from the two sides of the rubber belt conveyor, the rubber belt of the rubber belt conveyor is provided with a flange for preventing side leakage.

The third aspect of the application provides a molten steel slag treatment method, which is applied to the separation treatment system of the embodiment; the method comprises the following steps:

firstly, carrying out rolling crushing treatment on part of molten steel slag, and carrying out hot disintegrating Chi Remen treatment on the rest of molten steel slag; obtaining a hot material through rolling and crushing treatment, and obtaining a wet material through hot disintegrating Chi Remen treatment; recovering hot gas during rolling and crushing;

secondly, the hot state material and the wet state material enter a heating and drying production line simultaneously to obtain a mixture, and the wet state material is heated and dried by utilizing the waste heat of the hot state material;

thirdly, introducing the mixture obtained in the second step into a drying digestion bin, and introducing hot gas during rolling and crushing into the drying digestion bin; finally, dry materials are produced; the dry material is taken as a raw material and enters a feeding unit;

fourth, the dry material is led into a jaw crushing unit through a feeding unit, the jaw crushing unit crushes the steel slag to form a primary crushed product, and the primary crushed product is screened through a screening unit; the primary crushed products with the particle size larger than the particle size requirement cannot pass through the screening unit and are discharged from the discharge port to enter the circulating unit; discharging the primary crushed products meeting the crushing particle size requirement through a discharging unit;

fifthly, the circulation unit transmits the primary crushed products which do not meet the particle size requirement to the feeding unit for crushing again;

and sixthly, separating the block steel from the primary crushed products discharged by the discharging unit through the magnetic separation unit.

The beneficial effects achieved by the application are as follows: a discharging unit is arranged at the lower side of the screening unit, and the discharging unit adopts a apron conveyor and is used for receiving screened and discharged primary crushed products meeting the requirement of crushing particle size; the side part of the screening unit is provided with a circulating unit, the circulating unit adopts an L-shaped apron conveyor, one feeding end of the circulating unit corresponds to a side part discharge hole of the screening unit, and primary crushed products which are screened out by the screening unit and are larger than the particle size requirement are discharged from the side part discharge hole and enter the circulating unit; and returning the primary crushed products with the particle size larger than the particle size requirement to the feeding unit through the circulating unit, and re-entering the jaw crushing unit for re-crushing.

The steel slag is crushed by a steel slag jaw crushing and separating assembly to form a primary crushed product; after one end of the separation and conveying unit receives the primary crushed products, the primary crushed products are transferred to the other side, and the magnetic separation unit separates steel blocks from the primary crushed products to serve as one of the recovered products.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the steel slag jaw crushing and separating assembly of the application.

Fig. 2 is a schematic view of the jaw crusher unit of the present application.

Fig. 3 is a schematic view of the circulation unit structure of the present application.

Fig. 4 is a top view block diagram of the steel slag jaw crushing and separation assembly of the present application.

Fig. 5 is a schematic view of the magnetic separation assembly of the present application.

Fig. 6 is a schematic structural view of a first embodiment of the magnetic separation unit of the present application.

Fig. 7 is a schematic structural diagram of a second embodiment of the magnetic separation unit of the present application.

Fig. 8 is a schematic view of fig. 7A at a partial enlarged scale.

Fig. 9 is a schematic view of the structure of the buffer column of the present application.

Fig. 10 is a schematic view of the chain conveyor base structure of the present application.

Fig. 11 is a schematic diagram of the chain block sprocket of the present application.

Fig. 12 is a schematic view of the mating structure of the first embodiment of the bearing groove and guide frame of the present application.

Fig. 13 is a schematic view of a second linkage structure of the present application.

Fig. 14 is a schematic structural view of a first embodiment of a guide frame of the present application.

Fig. 15 is a schematic view of a second embodiment of the bearing groove and guide frame of the present application.

Fig. 16 is a schematic view of a fourth linkage plate structure of the present application.

Fig. 17 is a schematic view of a third embodiment of a supporting groove and a guiding frame according to the present application.

Fig. 18 is a schematic view of a sixth linkage plate structure of the present application.

Fig. 19 is a schematic diagram showing a third embodiment of the tooling state of the bearing groove and the guide frame of the present application.

FIG. 20 is a schematic view of a flange structure according to the present application.

Fig. 21 is a schematic view of the structure of the striking portion of the present application.

FIG. 22 is a flowchart showing a method for treating molten steel slag according to the present application.

In the figure, 1, jaw crushing unit; 2. a feeding unit; 3. a platform; 4. a magnetic separation component; 5. a discharging unit; 6. a sieving unit; 7. a circulation unit; 8. an upper housing; 9. a lower housing; 10. a sieve plate; 11. a vibration motor; 12. a feeding and dividing pipe; 13. jaw crusher; 14. a discharging and dividing pipe; 15. a feed chute; 16. a separation conveying unit; 17. a magnetic separation unit; 18. a belt magnetic separator; 19. a support frame body; 20. a plate magnetic separator; 21. a support leg; 22. a cross beam; 23. a guide rail screw sliding table; 24. a slide block; 25. a slipway slide; 26. a connecting plate; 27. a buffer channel; 28. a baffle frame; 29. a barrier iron net; 30. a buffer column; 31. a first compression spring; 32. a chain type conveying seat; 33. a rotating shaft; 34. chain wheel of chain block; 35. a chain; 36. a connecting block; 37. a carrying plate; 38. a sliding ear; 39. an annular clamping plate; 40. a restoring spring; 41. a carrying groove; 42. a guide frame; 43. a first linkage plate; 44. a transverse guide wheel; 45. a second linkage plate; 46. a third linkage plate; 47. a transverse slide shaft; 48. a second compression spring; 49. a fourth linkage plate; 50. a third compression spring; 51. a rope; 52. a folding line guide wheel; 53. a fifth linkage plate; 54. a vertical guide wheel; 55. a sixth linkage plate; 56. a guide post; 57. a fourth compression spring; 58. a guide groove 59, a slide shaft; 60. a rubber belt conveyor; 61. knocking a motor; 62. a knocking part; 63. and (5) a flange.

Detailed Description

In order to facilitate understanding of the application by those skilled in the art, a specific embodiment of the application is described below with reference to the accompanying drawings.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements; the specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.

Example 1

As shown in fig. 1, the application provides a steel slag jaw crushing and separating assembly, which comprises a jaw crushing unit 1 and a feeding unit 2, wherein the jaw crushing unit 1 is used for crushing steel slag; the feeding unit 2 adopts a apron conveyor, one end of the apron conveyor is arranged on the ground to receive the dry steel slag discharged after the treatment of the heat recovery procedure in the previous step; the other end of the feeding unit 2 is arranged at the feeding end of the jaw crushing unit 1, and steel slag is conveyed into the jaw crushing unit 1 through the feeding unit 2; the jaw crushing unit 1 is fixed on the upper layer of the platform 3, the screening unit 6 is arranged on the lower layer of the platform 3, and the discharging end of the jaw crushing unit 1 is connected with the feeding end of the screening unit 6; the jaw crushing unit 1 crushes the steel slag to form a primary crushed product, and the primary crushed product is screened by the screening unit 6; a discharging unit 5 is arranged at the lower side of the screening unit 6, and the discharging unit 5 adopts a apron conveyor and is used for receiving screened and discharged primary crushed products meeting the crushing particle size requirement; the side part of the screening unit 6 is provided with a circulating unit 7, the circulating unit 7 adopts an L-shaped apron conveyor, the feeding end of the circulating unit 7 corresponds to the discharging hole at the side part of the screening unit 6, and the primary crushed products which are screened out by the screening unit 6 and are larger than the particle size requirement are discharged from the discharging hole at the side part and enter the circulating unit 7; as shown in fig. 3 to 4, the other end of the circulation unit 7 extends to the middle position of the feeding unit 2; (namely, one end of the feeding unit 2 corresponds to the discharge end of the heat recovery process in the previous step, the other end corresponds to the feeding end of the jaw crushing unit 1, and the circulating unit 7 can be correspondingly arranged at any position in the middle of the feeding unit 2); the primary crushed products with the particle size larger than the particle size requirement are returned to the feeding unit 2 through the circulating unit 7 and enter the jaw crushing unit 1 again for crushing again.

Further, as shown in fig. 2, the sieving unit 6 includes an upper housing 8 having a feed port; the upper shell 8 is provided with a bag type dust collector, the bag type dust collector is used for carrying out flotation dust collection, the lower side of the upper shell is provided with a lower shell 9, and the lower shell 9 is of a conical structure and is provided with a discharge hole; the side part of the upper shell 8 is provided with a side part discharge hole; a sieve plate 10 (the sieve plate 10 is provided with a leak hole) is arranged in the upper shell 8, the sieve plate 10 is arranged in the upper shell 8 through a sieve plate 10 spring, and a vibrating motor 11 is arranged at the bottom of the sieve plate 10; meanwhile, the screen plate 10 is inclined from the side of the feed inlet to the side of the side discharge outlet.

When the sieve plate is used, the vibrating motor 11 drives the sieve plate 10 to vibrate so as to sieve the primary crushed products; the primary crushed products with the particle size larger than the requirement cannot pass through the sieve plate 10 and are discharged from the discharge port; the primary crushed products meeting the requirements of crushing grain size pass through the sieve plate 10 and are discharged to the discharging unit 5 from the bottom discharging hole.

Example two

The present embodiment is further specifically provided for the jaw crusher unit 1 on the basis of the first embodiment; as shown in fig. 1, the jaw crushing unit 1 comprises a feeding and distributing pipe 12, wherein the feeding and distributing pipe 12 is of a bifurcated three-way structure, and the upper end of the feeding and distributing pipe 12 is connected with a conical feeding chute 15; the two ends of the lower side of the jaw crusher are respectively connected with the jaw crusher 13; the discharging side of the jaw crusher 13 is connected with a discharging and distributing pipe 14, the discharging and distributing pipe 14 is of a bifurcated tee structure, and the lower side of the discharging and distributing pipe 14 is connected with the screening unit 6.

The steel slag on the feeding unit 2 enters the feeding groove 15, and the feeding groove 15 is cone-shaped, so that the steel slag can be conveniently collected; crushing the steel slag through a jaw crusher 13 after the steel slag is separated through a feeding and separating pipe 12, and separating the steel slag through the feeding and separating pipe 12 to realize the flow separation of the steel slag; the crushing is synchronously carried out through the two jaw crushers 13 to form primary crushed products, so that the crushing efficiency is increased; the primary crushed products are converged through the discharging and distributing pipe 14 and then enter the screening unit 6.

Example III

The application also provides a separation treatment system which comprises the steel slag jaw crushing and separating assembly and the magnetic separation assembly 4, wherein the magnetic separation assembly 4 is arranged on one side of the discharging unit 5, which is far away from the screening unit 6, and is used for conveying and transferring primary crushed products and separating steel blocks from the primary crushed products; as shown in fig. 5, the magnetic separation assembly 4 comprises a separation and conveying unit 16 for receiving and conveying the primary crushed products and a magnetic separation unit 17 for separating the block steel from the primary crushed products; the magnetic separation unit 17 is disposed above the separation conveying unit 16, and a plurality of magnetic separation units 17 may be disposed.

The use principle is as follows: the steel slag is crushed by a steel slag jaw crushing and separating assembly to form a primary crushed product; after receiving the primary crushed product, one end of the separation and conveying unit 16 is transferred to the other side, and the magnetic separation unit 17 separates steel blocks from the primary crushed product as one of the recovered products.

Example IV

In the embodiment, the magnetic separation unit 17 is further specifically arranged on the basis of the third embodiment, as shown in fig. 6, one embodiment of the magnetic separation unit 17 comprises a belt magnetic separator 18 and a support frame 19, the support frame 19 is of an inverted U-shaped structure, and the belt magnetic separator 18 is arranged on the support frame 19; the separation and conveying units 16 are arranged in the support frame 19 in a staggered manner; when the primary crushed products pass through the staggered and overlapped position of the separation and conveying unit 16 and the belt magnetic separator 18; the steel blocks are adsorbed to the belt magnetic separator 18 to be separated from the primary crushed products, and the belt magnetic separator 18 outputs the steel blocks to the other side to be discharged.

As shown in fig. 7, another embodiment of the magnetic separation unit 17 includes a plate magnetic separator 20 and four supporting legs 21, wherein the supporting legs 21 are in an inverted U-shaped structure and are horizontally arranged side by side; the upper sides of the supporting legs 21 are respectively provided with a cross beam 22, two sides of the four supporting legs 21 are connected together, and the upper sides of the cross beams 22 are oppositely provided with guide rail screw sliding tables 23; the plate-type magnetic separator 20 is fixed on a guide rail screw sliding table 23 through a mounting plate; as shown in fig. 8, which is a partial enlarged view of the guide screw sliding table 23, a through sliding table slideway 25 is arranged at the bottom of the guide screw sliding table 23; as shown in fig. 9, two sliding blocks 24 are respectively arranged on one guide screw sliding table 23, a connecting plate 26 is arranged at the bottom of each sliding block 24, the connecting plate 26 penetrates out of the sliding table sliding way 25, and a buffer channel 27 is formed at the end part of each connecting plate 26; a barrier frame 28 for barrier steel is provided between the legs 21; the baffle frame 28 is a rectangular frame structure, a baffle iron net 29 is arranged in the middle of the baffle frame, a plurality of protruding transverse baffles (not shown in the figure) are arranged on the lower side of the baffle iron net 29, and auxiliary block steel is separated out to the side; the end of the baffle frame 28 is provided with a buffer post 30, the buffer post 30 is in sliding fit in the buffer channel 27 and limited by a limiting plate, and a first compression spring 31 penetrates through the buffer post 30 between the connecting plate 26 and the baffle frame 28.

In use, the primary crushed product is transferred and conveyed on the separation and conveying unit 16; when the primary crushed products pass through the staggered and overlapped position of the separation conveying unit 16 and the plate-type magnetic separator 20, the block steel is separated from the primary crushed products after being adsorbed; the baffle frame 28 is used for blocking the block steel and avoiding direct collision and knocking of the block steel to the plate-type magnetic separator 20; meanwhile, a first compression spring 31 is arranged between the connecting plate 26 and the barrier frame 28, and the first compression spring 31 has a buffering effect, so that after the block steel impacts the barrier frame 28, the barrier frame 28 has a buffering distance moving upwards; after a certain amount of steel is accumulated on the baffle frame 28, the guide screw sliding table 23 drives the baffle frame 28 to move leftwards; the block steel on the left side of the baffle frame 28 loses the magnetic attraction of the plate-type magnetic separator 20 and falls off to be discharged; at this time, the right half part of the barrier frame 28 moves to the lower side of the plate-type magnetic separator 20, and the plate-type magnetic separator 20 adsorbs the block steel, which is blocked by the barrier iron net 29 on the barrier frame 28.

Example five

In this embodiment, the separating and conveying unit 16 is further specifically provided on the basis of the third embodiment, and one embodiment of the separating and conveying unit 16 is an existing rubber belt conveyor 60; the belt conveyor 60 is used for conveying and transferring the primary crushed products to the lower side of the magnetic separation unit 17, and the magnetic separation unit 17 separates steel blocks from the primary crushed products.

When the primary crushed products are transferred through the separation conveying unit 16, the magnetic separation unit 17 can only adsorb the block steel from the upper layer of the primary crushed products, and the block steel of the lower layer is pressed below, so that the block steel in the primary crushed products cannot be completely separated; as shown in fig. 20 to 21, a knocking motor 61 is mounted on a frame of the tape conveyor 60, and a cam-shaped knocking part 62 is mounted on a motor shaft of the knocking motor 61; the knocking motor 61 drives the knocking part 62 to rotate, so that the knocking part 62 knocks the upper belt of the belt conveyor 60; the primary crushed products are knocked, so that auxiliary steel blocks are adsorbed and separated from the primary crushed products; to avoid that the initially crushed product falls off both sides of the belt conveyor 60, the belt of the belt conveyor 60 has side-leakage-preventing flanges 63.

As shown in fig. 10, another embodiment of the separation conveying unit 16 includes a chain conveying seat 32, the chain conveying seat 32 having a square frame structure with support legs at the bottom thereof; the two sides of the chain type conveying seat 32 are rotatably provided with a rotating shaft 33 through bearings and bearing seats, and the end part of the rotating shaft 33 is fixed with a driving motor through a reduction gearbox; the driving motor is fixed with the chain type conveying seat 32 through a motor support; as shown in fig. 11, two chain block sprockets 34 are oppositely arranged on the rotating shaft 33, and the chain block sprockets 34 on two sides are in transmission connection through a chain 35; the upper end face of the vertical chain link of the lock chain 35 is welded with a connecting block 36, the length of the connecting block 36 is smaller than that of the vertical chain link of the lock chain 35, and the width of the connecting block 36 is equal to the diameter of the lock chain 35; as shown in fig. 13, a sliding shaft is provided between the connecting blocks 36, and a sliding frame is slidably fitted on the sliding shaft, and the sliding frame includes a sliding lug 38 and a carrying plate 37 connecting the two sliding lugs 38 together; the middle of the sliding shaft is provided with an annular clamping plate 39, a restoring spring 40 penetrates through the sliding shaft between the annular clamping plate 39 and the sliding lug 38, and restoring springs 40 are respectively arranged on two sides of the sliding shaft and used for driving the sliding frame to swing transversely and then reset; the bearing groove 41 is arranged on the bearing plate 37; the bearing grooves 41 are groove-shaped structures with trapezoid cross sections, and adjacent bearing grooves 41 are contacted with each other; for receiving and delivering the primary crushed product; the chain conveyor 32 is provided with a guide frame 42; the guide frame 42 is used for driving the bearing groove 41 to swing.

Further, as shown in fig. 13, in this embodiment, the carrying groove 41 is fixed on the carriage, one side of the carriage is fixed with the transverse guide wheel 44 through the first linkage plate 43, the other side of the carriage is provided with the L-shaped second linkage plate 45, and the vertical plate of the second linkage plate 45 is provided with the third linkage plate 46; a transverse sliding shaft 47 is arranged on one side of the third linkage plate 46, the transverse sliding shaft 47 is in sliding fit with the vertical plate of the second linkage plate 45, and a second compression spring 48 penetrates through the transverse sliding shaft 47; the other side of the third linkage plate 46 is provided with a transverse guide wheel 44; as shown in fig. 12 and 14, the transverse guide wheel 44 is fitted in the guide frame 42, the guide frame 42 is a C-shaped channel steel structure, the bottom of the channel steel is provided with arc-shaped protruding blocks (the track on one side is provided and the track on the other side is not provided), and the positions of the protruding blocks correspond to the positions of the magnetic separation units 17; the end of the channel has a flared slot along which a transverse guide 44 passes into the guide frame 42.

The use principle is as follows: the primary crushed products are transferred and conveyed in the bearing groove 41; the bearing groove 41 enters the magnetic attraction area of the magnetic separation unit 17, the protruding blocks transversely squeeze the transverse guide wheels 44, the sliding frame transversely slides along the sliding shaft, the second linkage plate 45 squeezes the second compression springs 48, the bearing groove 41 transversely reciprocates, the primary crushed products in the bearing groove 41 transversely swing, and the auxiliary block steel is adsorbed and separated from the primary crushed products.

Further, as shown in fig. 16, in this embodiment, the middle part of the carrying groove 41 is hinged to the middle part of the sliding frame, and the two sides of the sliding frame are respectively provided with a fourth linkage plate 49; the bottoms of the two side grooves of the bearing groove 41 are fixed with the fourth linkage plate 49 through the third compression spring 50; one end of a rope 51 is fixed on the bearing groove 41, the fixed point is positioned in the third compression spring 50, the other end of the rope 51 passes through the fourth linkage plate 49 and bypasses the broken line guide wheel 52 to be fixed on the side part of the connecting block 36; meanwhile, the two side ends of the bearing groove 41 are fixed with a vertical guide wheel 54 through an L-shaped fifth linkage plate 53; as shown in fig. 15, the vertical guide wheels 54 are in contact with and matched with the guide frames 42, the guide frames 42 are in a plate-shaped structure, the upper sides of the guide frames 42 are wavy (the wavy shapes of the guide frames 42 at the two sides correspond to each other, namely, one side is an arc top and the other side is an arc bottom), and the wavy positions of the guide frames 42 correspond to the positions of the magnetic separation units 17.

The use principle is as follows: the primary crushed products are transferred and conveyed in the bearing groove 41; the bearing groove 41 enters the magnetic attraction area of the magnetic separation unit 17, and the protruding blocks vertically squeeze the vertical guide wheels 54; the bearing groove 41 vertically swings along the middle hinged position, and at the moment, the rope 51 at one side lifted by the bearing groove 41 transversely pulls the sliding frame, and the sliding frame transversely slides along the sliding shaft; the bearing groove 41 swings transversely and vertically, so that the primary crushed products in the bearing groove 41 swing, and the auxiliary block steel is adsorbed and separated from the primary crushed products.

Further, as shown in fig. 18, in this embodiment, the middle part of the bearing groove 41 is hinged on the sliding frame, and the two sides of the sliding frame are respectively provided with a sixth linkage plate 55, and the end part of the sixth linkage plate 55 is provided with a vertical guide post 56; the bottoms of the two side grooves of the bearing groove 41 are fixed with the sixth linkage plate 55 through the fourth compression spring 57; one end of the rope 51 is fixed on the bearing groove 41 in the fourth compression spring 57, and the other end of the rope 51 passes through the sixth linkage plate 55 and bypasses the broken line guide wheel 52 to be fixed on the side part of the connecting block 36; the guide post 56 is fitted in the guide frame 42, the guide frame 42 has a ring-shaped structure, a guide groove is provided in the middle, and the position of the guide groove corresponding to the magnetic separation unit 17 is wavy.

The use principle is as follows: as shown in fig. 19, the primary crushed products are transferred and conveyed in the carrying groove 41; the bearing groove 41 enters the magnetic attraction area of the magnetic separation unit 17, and the guide groove drives the guide post 56 to transversely swing, so that the sliding frame transversely slides back and forth along the sliding shaft; the carrying groove 41 is reciprocally moved in the lateral direction; the broken line guide wheel 52 transversely pulls the rope 51, and the rope 51 pulls the bearing groove 41 to move downwards; the bearing groove 41 swings transversely and vertically at the same time, so that the primary crushed products in the bearing groove 41 swing, and the auxiliary block steel is adsorbed and separated from the primary crushed products.

Example six

The application also provides a molten steel slag treatment method, and the separation treatment system of the embodiment is applied; the steel slag has a considerable amount of residual metallic iron, and the primary aim of the molten steel slag treatment is to extract the metallic iron from the steel slag to the maximum extent, return the metallic iron to steelmaking or ironmaking, and save resources; then how to grind and comprehensively utilize the steel slag after iron selection with high efficiency, so as to realize the green circulation of the steel-making solid waste;

the method comprises the following steps:

firstly, carrying out rolling crushing treatment on part of molten steel slag, and carrying out hot disintegrating Chi Remen treatment on the rest of molten steel slag; obtaining a hot material through rolling and crushing treatment, and obtaining a wet material through hot disintegrating Chi Remen treatment; recovering hot gas during rolling and crushing;

secondly, the hot state material and the wet state material enter a heating and drying production line simultaneously to obtain a mixture, and the wet state material is heated and dried by utilizing the waste heat of the hot state material; the hot material produced by rolling and crushing is used as a drying heat source of the wet material, so that the follow-up crushing magnetic separation efficiency and dust removal reliability are ensured, and meanwhile, the random diffusion of smoke dust and hot air in a workshop is prevented. The molten steel slag waste heat recovery technology of the application makes the heat of the molten steel slag utilized to the greatest extent;

thirdly, introducing the mixture obtained in the second step into a drying digestion bin, and introducing hot gas during rolling and crushing into the drying digestion bin; finally, dry materials are produced; the dry material is taken as a raw material and enters a feeding unit; utilizing a heat source for crushing treatment of the double roller;

fourth, the dry material is led into a jaw crushing unit through a feeding unit, the jaw crushing unit crushes the steel slag to form a primary crushed product, and the primary crushed product is screened through a screening unit; the primary crushed products with the particle size larger than the particle size requirement cannot pass through the screening unit and are discharged from the discharge port to enter the circulating unit; discharging the primary crushed products meeting the crushing particle size requirement through a discharging unit;

fifthly, the circulation unit transmits the primary crushed products which do not meet the particle size requirement to the feeding unit for crushing again;

sixthly, separating the block steel from the primary crushed products discharged by the discharging unit through the magnetic separation unit;

the above-mentioned fixing means, unless described separately, are all common technical means for those skilled in the art, welding, nesting or screw fixing.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present application described above do not limit the scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application as set forth in the appended claims.

Claims (7)

1. The separation treatment system is characterized by comprising a steel slag jaw type crushing and separating assembly and a magnetic separation assembly (4), wherein the magnetic separation assembly (4) is arranged on one side of a discharging unit (5) far away from a screening unit (6) and is used for conveying and transferring primary crushed products, the magnetic separation assembly (4) comprises a separation conveying unit (16) for receiving and conveying the primary crushed products, and a magnetic separation unit (17) for separating steel blocks from the primary crushed products; the magnetic separation unit (17) is arranged above the separation conveying unit (16);

the steel slag jaw crushing and separating assembly comprises a jaw crushing unit (1) and a feeding unit (2) which are used for crushing steel slag, wherein the other end of the feeding unit (2) is arranged at the feeding end of the jaw crushing unit (1); the jaw crushing unit (1) is fixed on the upper layer of the platform (3), the screening unit (6) is arranged on the lower layer of the platform (3), and the discharging end of the jaw crushing unit (1) is connected with the feeding end of the screening unit (6); a discharging unit (5) is arranged at the lower side of the screening unit (6), and the discharging unit (5) is used for receiving primary crushed products meeting the crushing particle size requirement; the side part of the screening unit (6) is provided with a circulating unit (7), the circulating unit (7) corresponds to a side part discharge hole of the screening unit (6), and the other end of the circulating unit (7) is connected to the middle position of the feeding unit (2);

the separation conveying unit (16) comprises a chain conveying seat (32), rotating shafts (33) are arranged on two sides of the chain conveying seat (32), and the driving device drives the rotating shafts (33) to rotate; two chain block chain wheels (34) are oppositely arranged on the rotating shaft (33), and the chain block chain wheels (34) on two sides are in transmission connection through a chain (35); a connecting block (36) is arranged on the vertical chain ring of the chain (35), a sliding shaft is arranged between the connecting blocks (36), and a sliding frame is in sliding fit with the sliding shaft; the middle of the sliding shaft is provided with an annular clamping plate (39), and two sides of the sliding shaft are respectively provided with a restoring spring (40) which is used for driving the sliding frame to swing transversely and then reset; the bearing groove (41) is arranged on the bearing plate (37) and is used for receiving and transmitting the primary crushed products; a guide frame (42) is arranged on the chain type conveying seat (32); the guide frame (42) is used for driving the bearing groove (41) to swing;

the bearing groove (41) is hinged on the sliding frame, and the two sides of the sliding frame are respectively provided with a fourth linkage plate (49); the bottoms of the two sides of the bearing groove (41) are fixed with a fourth linkage plate (49) through a third compression spring (50); one end of a rope (51) is fixed on the bearing groove (41), the fixed point is positioned in the third compression spring (50), the other end of the rope (51) passes through the fourth linkage plate (49) and bypasses the broken line guide wheel (52) to be fixed on the side part of the connecting block (36); meanwhile, the two side ends of the bearing groove (41) are fixed with the vertical guide wheel (54) through a fifth linkage plate (53); the vertical guide wheel (54) is in contact fit with the guide frame (42), the guide frame (42) is of a plate-shaped structure, and the upper side of the guide frame is wavy.

2. A separation treatment system according to claim 1, characterized in that the screening unit (6) comprises an upper housing (8) with a feed opening and a lower housing (9) with a discharge opening; the side part of the upper shell (8) is provided with a side part discharge hole; a sieve plate (10) is arranged in the upper shell (8), and a vibrating motor (11) is arranged at the bottom of the sieve plate (10).

3. A separation treatment system according to claim 1, characterized in that the jaw crushing unit (1) comprises a feed distribution pipe (12) which upper end is connected to a cone-shaped feed chute (15); two ends of the lower side of the jaw crusher are respectively connected with the jaw crusher (13); the discharge side of the jaw crusher (13) is connected with the screening unit (6) through a discharge distributing pipe (14).

4. The separation treatment system according to claim 1, wherein the magnetic separation unit (17) comprises a plate-type magnetic separator (20) and a plurality of supporting legs (21), the supporting legs (21) are arranged side by side, the upper sides of the supporting legs are connected together through a cross beam (22), and a guide rail screw sliding table (23) is oppositely arranged on the upper side of the cross beam (22); the plate-type magnetic separator (20) is fixed on the guide rail screw sliding table (23) through a mounting plate; a baffle frame (28) for baffle steel is arranged between the supporting legs (21), and the baffle frame (28) is fixed with a sliding block (24) of the guide rail screw sliding table (23).

5. The separation processing system according to claim 4, wherein a through slipway (25) is arranged at the bottom of the guide screw slipway (23); a connecting plate (26) is arranged at the bottom of the sliding block (24), the connecting plate (26) penetrates out of the sliding table slideway (25), and a buffer channel (27) is formed at the end part of the connecting plate (26); the end of the baffle frame (28) is provided with a buffer column (30), the buffer column (30) is in sliding fit in the buffer channel (27), and a first compression spring (31) penetrates through the buffer column (30) between the connecting plate (26) and the baffle frame (28).

6. A separation treatment system according to claim 1, characterized in that the alternative of the engagement of the carrier groove (41) with the guide frame (42) is that the carrier groove (41) is hinged to the carriage; both sides of the sliding frame are fixed with the guide post (56) through a sixth linkage plate (55); the bottoms of the two sides of the bearing groove (41) are fixed with a sixth linkage plate (55) through a fourth compression spring (57); one end of the rope (51) is fixed on the bearing groove (41) in the fourth compression spring (57), the other end of the rope (51) passes through the sixth linkage plate (55) and bypasses the broken line guide wheel (52) to be fixed on the side part of the connecting block (36); the guide post (56) is matched in the guide groove of the guide frame (42).

7. A method for treating molten steel slag, characterized by using the separation treatment system according to claim 1; the method comprises the following steps:

firstly, carrying out rolling crushing treatment on part of molten steel slag, and carrying out hot disintegrating Chi Remen treatment on the rest of molten steel slag; obtaining a hot material through rolling and crushing treatment, and obtaining a wet material through hot disintegrating Chi Remen treatment; recovering hot gas during rolling and crushing;

secondly, the hot state material and the wet state material enter a heating and drying production line simultaneously to obtain a mixture, and the wet state material is heated and dried by utilizing the waste heat of the hot state material;

thirdly, introducing the mixture obtained in the second step into a drying digestion bin, and introducing hot gas during rolling and crushing into the drying digestion bin; finally, dry materials are produced; the dry material is taken as a raw material and enters a feeding unit;

fourth, the dry material is led into a jaw crushing unit through a feeding unit, the jaw crushing unit crushes the steel slag to form a primary crushed product, and the primary crushed product is screened through a screening unit; the primary crushed products with the particle size larger than the particle size requirement cannot pass through the screening unit and are discharged from the discharge port to enter the circulating unit; discharging the primary crushed products meeting the crushing particle size requirement through a discharging unit;

fifthly, the circulation unit transmits the primary crushed products which do not meet the particle size requirement to the feeding unit for crushing again;

and sixthly, separating the block steel from the primary crushed products discharged by the discharging unit through the magnetic separation unit.