Pelletizing and transferring system for converting slag

Abstract

The invention relates to a converting slag granulating and transferring system which comprises a slag flow groove, a granulating head, a granulating groove, a slag conveyor, a converting slag storage pool, screening equipment, belt conveying equipment and a converting slag batching bin. The granulating head is arranged on the discharging side of the slag flow groove and used for cooling and granulating the converting furnace slag output by the slag flow groove; the granulating tank is arranged below the discharge hole of the slag flow tank and is used for receiving the converting furnace slag treated by the granulating head; the granulating tank comprises an inclined tank side surface for receiving the slag of the converting furnace and a horizontal tank bottom surface; the slag conveyor is used for conveying converting furnace slag between the granulating tank and the converting slag storage pool and between the converting slag storage pool and the screening equipment; the converting slag storage pool is used for filtering water from converting furnace slag; the screening equipment is used for removing large materials in the converting furnace slag; and the belt conveying equipment is used for conveying the materials output by the screening equipment to the converting slag batching bin. According to the method, environmental pollution caused by converting slag is avoided, valuable metal loss is avoided, and benefits are improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper ore smelting, and in particular to a blowing slag granulation and transfer system. Background Art

[0002] The conventional granulation of slag in the flash converting furnace of the double flash copper smelting process mainly includes water quenching and air quenching. The equipment for water quenching includes water quenching granulation head, granulation tank, slag picker, slag buffer bin, etc. The equipment for air quenching also includes air quenching granulation head, granulation tank, scraper, dehydration bin, etc. After the granulation of both, the converting slag is temporarily buffered and dehydrated in the bin for a certain period of time, and then transported by car to the converting slag warehouse in the raw material area of ​​the smelting furnace which is far away. During the transportation process, on the one hand, there is uncleaned water dripping along the way during transportation, causing environmental pollution, and at the same time, there is also the blowing slag scattering during transportation, which also causes pollution and loss of valuable metals. On the other hand, the cost of automobile transportation is high, and untimely transportation is not conducive to the stability of production and may even require furnace shutdown. The slag machine has a limited working surface. The materials outside the working area of ​​the slag machine are piled up in the granulation tank. They are long-term inventory and need to be cleaned up manually in the limited space regularly to keep the passages within the working range of the slag machine smooth. Secondly, the slag machine has a relatively high failure rate. The accumulated materials often collapse and crush the slag machine. The maintenance cost is high and the handling of the crushed slag machine requires reducing the processing capacity of the blowing furnace. The above problems need to be solved urgently. Summary of the invention

[0003] The invention discloses a blowing slag granulation and transfer system, aiming to solve the technical problems existing in the prior art.

[0004] The present invention adopts the following technical solutions:

[0005] The present invention provides a blowing slag granulation and transportation system, which includes a slag chute, a granulation head, a granulation trough, a slag scoop, a blowing slag storage pool, a screening device, a belt conveyor and a blowing slag batching bin; the granulation head is arranged at the discharge side of the slag chute, and is used to cool and granulate the blowing furnace slag output by the slag chute; the granulation trough is arranged below the discharge port of the slag chute, and is used to receive the blowing furnace slag processed by the granulation head; and the granulation trough includes an inclined trough side and a horizontal trough bottom surface for receiving the blowing furnace slag; the slag scoop is used to transport the blowing furnace slag between the granulation trough and the blowing slag storage pool, and between the blowing slag storage pool and the screening device; the blowing slag storage pool is used to filter water and temporarily store the blowing furnace slag; the screening device is used to remove large pieces of material in the blowing furnace slag; the belt conveyor is used to transport the material output by the screening device to the blowing slag batching bin.

[0006] In a blowing slag granulation and transfer system of the present invention, the granulation trough and the blowing slag storage tank are arranged adjacent to each other and connected through an overflow hole; grilles are provided at both ends of the overflow hole; pebbles are filled between the grilles; the bottom surface of the blowing slag storage tank is an inclined surface, and a drainage ditch is provided on the lower side of the inclined surface.

[0007] In a blowing slag granulation and transfer system of the present invention, the drainage ditch is arranged adjacent to the overflow hole and lower than the overflow hole, and the drainage ditch is filled with pebbles.

[0008] In a blowing slag granulation and transfer system of the present invention, a wear-resistant layer is laid on the receiving inclined surface of the granulation trough.

[0009] In a blowing slag granulation and transfer system of the present invention, the belt conveyor equipment includes a support, belt rollers, belts, roller assemblies and a driving member; the belt rollers are rotatably arranged on the support in pairs; the belts are wound around the pairs of belt rollers; there are multiple roller assemblies, which are rotatably installed on the support, and the multiple roller assemblies form a supporting groove for supporting the belts; the driving member is used to drive the belt rollers to rotate.

[0010] In a blowing slag granulation and transfer system of the present invention, the roller assembly includes a first roller, a second roller, a third roller and a roller frame; the roller frame is installed on the bracket and rotatably connects the first roller, the second roller and the third roller; the second roller is arranged perpendicular to the extension direction of the belt and is located directly below the upper belt; the first roller and the third roller are symmetrically arranged about the perpendicular line of the second roller.

[0011] In a blowing slag granulation and transfer system of the present invention, the belt conveyor equipment further comprises a counterweight assembly; the counterweight assembly is used to keep the belt in a taut state.

[0012] In a blowing slag granulation and transfer system of the present invention, the counterweight assembly includes a counterweight rod, a counterweight frame, a counterweight wheel, a counterweight piece and a direction-changing roller; one end of the counterweight rod is rotatably connected to the bracket; the counterweight frame can be movably installed on the counterweight rod along the counterweight rod, and the counterweight wheel is rotatably installed on the counterweight frame, and has a mounting position for accommodating the counterweight piece; the direction-changing rollers are arranged in pairs at intervals, and are rotatably installed on the bracket, and are located below the lower layer of the belt; the counterweight wheel can be pressed on the belt between the direction-changing rollers.

[0013] In a blowing slag granulation and transfer system of the present invention, the counterweight is plural in number.

[0014] In a blowing slag granulation and transfer system of the present invention, the belt conveyor equipment also includes a scraper assembly; the scraper assembly is used to scrape the surface material on the discharge side of the belt, and includes a scraper plate, a rotating shaft, a bearing and an elastic assembly; the bearing is mounted on the bracket; one side of the scraper plate is connected to the bearing through the rotating shaft, and the other side is pressed against the belt surface through the elastic assembly.

[0015] In a blowing slag granulation and transfer system of the present invention, the elastic component includes an elastic member, a lever, a screw and a nut; one end of the screw is rotatably connected to the bracket, and the other end can pass through the lever; the end of the lever is sleeved on the rotating shaft; the nut is threaded on the screw; the elastic member is sleeved on the screw and abuts against the nut and the lever, so that the scraper plate abuts against the belt surface.

[0016] In a blowing slag granulation and transfer system of the present invention, the scraper plate is an arc-shaped plate, and the thickness gradually decreases from the connection with the rotating shaft to the other opposite side, and the edge abutting against the belt is a sharp end.

[0017] In a blowing slag granulation and transfer system of the present invention, a fume exhaust hood is arranged above the notch of the granulation tank; the fume exhaust hood is used to discharge the waste gas generated by the granulation tank to an external purification system.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0019] The present invention mainly provides a blowing slag granulation and transfer system, which uses belt conveyor equipment to transport materials, thereby avoiding environmental pollution caused by leakage of water and blowing slag during the transportation of blowing slag by car, and avoiding the loss of valuable metals caused by the spreading of blowing slag, thereby improving the recovery rate and enterprise benefits and reducing transportation costs; using screening equipment to remove large pieces of material, reducing the wear of the blowing slag on the coil of the smelting furnace steam dryer, and improving the life of the steam dryer; the granulation tank is arranged to include an inclined tank side for receiving materials and a horizontal tank bottom surface, which on the one hand increases the volume of the granulation tank, and on the other hand avoids the accumulation of materials at the granulation head, without the need for manual cleaning, eliminating safety hazards, and based on the arrangement of the horizontal tank bottom surface, the working surface of the slag remover is increased, and the failure rate of the slag remover is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, which constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions explain the present invention and do not constitute improper limitations on the present invention. In the drawings:

[0021] Figure 1It is a structural schematic diagram of a blowing slag granulation and transfer system of the present invention;

[0022] Figure 2 It is one of the structural schematic diagrams of the belt conveyor equipment of the present invention;

[0023] Figure 3 This is the second structural schematic diagram of the belt conveyor device of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the roller assembly of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the counterweight assembly of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the scraper assembly of the present invention.

[0027] Description of reference numerals:

[0028] 1. Slag chute; 2. Granulation head; 3. Granulation trough; 31. Wear-resistant layer; 4. Slag remover; 5. Blowing slag storage tank; 51. Drainage ditch; 6. Screening equipment; 61. Receiving hopper; 62. Vibrating screen; 7. Belt conveyor; 71. Bracket; 72. Belt roller; 73. Belt; 74. Roller assembly; 741. First roller; 742. Second roller; 743. Third roller; 744. Roller frame; 75. Driving member; 76. Counterweight assembly; 7 61. Counterweight rod; 762. Counterweight frame; 763. Counterweight wheel; 764. Counterweight member; 765. Direction-changing roller; 77. Scraper assembly; 771. Scraper plate; 772. Rotating shaft; 773. Bearing; 774. Elastic assembly; 7741. Elastic member; 7742. Push rod; 7743. Screw rod; 7744. Nut; 8. Blowing slag batching bin; 9. Overflow hole; 101. Grille; 102. Partition; 103. Exhaust hood; 104. Magnetic suction device. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a magnetic connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically limited.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to solve the problems existing in the prior art, an embodiment of the present application provides a blowing slag granulation and transfer system.

[0033] like Figure 1 and 2 As shown, a blowing furnace slag granulation and transportation system comprises a slag chute 1, a granulation head 2, a granulation trough 3, a slag scoop 4, a blowing furnace slag storage pool 5, a screening device 6, a belt conveyor 7 and a blowing furnace slag batching bin 8; the granulation head 2 is arranged at the discharge side of the slag chute 1, and is used for cooling and granulating the blowing furnace slag output by the slag chute 1; the granulation trough 3 is arranged below the discharge port of the slag chute 1, and is used for receiving the blowing furnace slag processed by the granulation head 2; and the granulation trough 3 comprises an inclined trough side and a horizontal trough bottom surface for receiving the blowing furnace slag; the slag scoop 4 is used for transporting the blowing furnace slag between the granulation trough 3 and the blowing furnace slag storage pool 5, and between the blowing furnace slag storage pool 5 and the screening device 6; the blowing furnace slag storage pool 5 is used for filtering and temporarily storing the blowing furnace slag; the screening device 6 is used for removing large pieces of material in the blowing furnace slag; the belt conveyor 7 is used for transporting the material output by the screening device 6 to the blowing furnace slag batching bin 8.

[0034] The main blowing slag granulation and transfer system of the present invention is based on material transportation with belt conveyor equipment, which avoids environmental pollution caused by water and blowing slag leakage during blowing slag automobile transportation, and avoids the loss of valuable metals caused by the spreading of blowing slag, thereby improving the recovery rate and enterprise benefits and reducing transportation costs; large pieces of material are removed by screening equipment, which reduces the wear of the blowing slag on the coil of the smelting furnace steam dryer and improves the life of the steam dryer; the granulation trough is arranged to include an inclined trough side for receiving materials and a horizontal trough bottom surface, which on the one hand increases the volume of the granulation trough, and on the other hand avoids the accumulation of materials at the granulation head, without manual cleaning, eliminating safety hazards, and based on the setting of the horizontal trough bottom surface, the working surface of the slag remover is increased, and the failure rate of the slag remover is reduced.

[0035] In some preferred embodiments, the blowing slag batching bin 8, the slag scooping machine 4 and the granulation head 2 are no different from the existing equipment; specifically, the slag scooping machine 4 can be a crown crane type slag scooping machine.

[0036] In some preferred embodiments, Figure 1 As shown, the screening device 6 includes a receiving hopper 61 and a vibrating screen 62; the receiving hopper 61 receives the converting furnace slag transported by the slag remover 4; the vibrating screen 62 is arranged at the discharge port of the receiving hopper 61, and is used to remove large pieces of material in the converting furnace slag; thereby, the wear of the converting slag on the coil of the smelting furnace steam dryer is reduced, and the service life of the steam dryer is improved.

[0037] In some preferred embodiments, the inclination angle of the inclined groove side of the granulating groove 3 is 47.5°; at this angle, both the accumulation of materials and the impact of materials on the receiving inclined surface can be reduced.

[0038] In some preferred embodiments, Figure 1 As shown, the granulation tank 3 and the blowing slag storage tank 5 are arranged adjacent to each other and are connected through the overflow hole 9; grilles 101 are arranged at both ends of the overflow hole 9; pebbles are filled between the grilles 101; the bottom surface of the blowing slag storage tank 5 is an inclined surface, and a drainage ditch 51 is arranged on the lower side of the inclined surface. The pebbles are arranged in the overflow hole 9 to increase the gap, prevent the accumulation of blowing slag, and affect the drainage; preferably, the bottom surface of the blowing slag storage tank 5 has an inclination slope of 1% to avoid water storage in the blowing slag storage tank 5, and has a higher capacity.

[0039] Preferably, the bottom edge of the overflow hole 9 is higher than the bottom surface of the granulation tank 3, for example, 1 meter high; thereby, the overflow hole 9 is less likely to be blocked by the slag of the blowing furnace, thereby affecting the water filtering effect.

[0040] Preferably, a partition 102 is provided at the bottom of the granulation tank 3; the inclined surface of the granulation tank 3 and the overflow hole 9 are arranged opposite to each other, and the partition 102 is arranged between the inclined surface of the granulation tank 3 and the overflow hole 9; based on the arrangement of the partition 102, the influence of the slag of the blowing furnace on the passing capacity of the overflow hole 9 is further avoided.

[0041] In some preferred embodiments, there are multiple belt conveyor devices 7, and the multiple belt conveyor devices 7 jointly transport materials.

[0042] In some preferred embodiments, the drainage groove 51 is disposed adjacent to the overflow hole 9 and is lower than the overflow hole 9 , and the drainage groove 51 is filled with pebbles.

[0043] Preferably, the pebble particle size is 30-50 mm; within this range, the gap is more appropriate. If the size is too large, the gap is easy to cause the blowing slag to accumulate, and if the size is too small, the water filtering effect will be poor.

[0044] In some preferred embodiments, a wear-resistant layer 31 is laid on the receiving slope of the granulating trough 3 .

[0045] Preferably, the wear-resistant layer 31 is a stainless steel plate, such as 10 mm thick; the use of stainless steel plate not only achieves wear resistance but also reduces the surface friction coefficient, making it easier for materials to slide; further preferably, the top edge of the stainless steel plate is rotated and the bottom edge is provided with an elastic member; so that when the processing volume is low, the material can be temporarily stored on the inclined surface to increase the material storage capacity. When the discharge volume is high, the material squeezes the elastic member to increase the inclination angle of the wear-resistant layer 31, thereby timely transporting the material to the bottom of the trough to avoid material accumulation.

[0046] In some preferred embodiments, Figure 2 and 3 As shown, the belt conveyor 7 includes a bracket 71, belt rollers 72, belts 73, roller assemblies 74 and a driving member 75; the belt rollers 72 are rotatably arranged in pairs on the bracket 71; the belts 73 are wound around the paired belt rollers 72; there are multiple roller assemblies 74, which are rotatably installed on the bracket 71, and the multiple roller assemblies 74 form a supporting groove for supporting the belts 73; the driving member 75 is used to drive the belt rollers 72 to rotate; specifically, the driving member 75 is a motor.

[0047] Preferably, the plurality of roller assemblies 74 form a supporting groove having an inverted trapezoidal cross section.

[0048] In some preferred embodiments, Figure 4As shown, the roller assembly 74 includes a first roller 741, a second roller 742, a third roller 743 and a roller frame 744; the roller frame 744 is installed on the bracket 71, and is rotatably connected to the first roller 741, the second roller 742 and the third roller 743; the second roller 742 is arranged perpendicular to the extension direction of the belt 73, and is located directly below the upper belt 73; the first roller 741 and the third roller 743 are symmetrically arranged about the perpendicular line of the second roller 742; based on the arrangement of the first roller 741, the second roller 742 and the third roller 743 for common support, it can adapt to a certain deflection generated during the conveying of the belt 73, thereby improving the scope of application and ensuring normal transportation.

[0049] In some preferred embodiments, Figure 5 As shown, the belt conveyor 7 further includes a counterweight assembly 76 ; the counterweight assembly 76 is used to keep the belt 73 in a taut state; based on this, it is ensured that the belt roller 72 can always drive the belt 73 to rotate.

[0050] In some preferred embodiments, the counterweight assembly 76 includes a counterweight rod 761, a counterweight frame 762, a counterweight wheel 763, a counterweight member 764 and a direction-changing roller 765; one end of the counterweight rod 761 is rotatably connected to the bracket 71; the counterweight frame 762 can be movably installed on the counterweight rod 761, and the counterweight wheel 763 is rotatably installed on the counterweight frame 762, and has a mounting position for accommodating the counterweight member 764; the direction-changing rollers 765 are arranged in pairs at intervals and are rotatably installed on the bracket 71 and are located at the lower layer of the belt 73. Below; the counterweight wheel 763 can be pressed on the belt 73 between the redirecting rollers 765; based on this, it can not only ensure the close fit between the belt 73 and the belt roller 72, but also facilitate the installation of the belt 73; and the counterweight rod 761 is rotatably connected to reduce the radial force of the counterweight rod 761 during the transmission of the belt 73. Specifically, the rotation direction of the counterweight rod 761 is parallel to the conveying direction of the belt 73; specifically, the rotation axes of the redirecting roller 765 and the counterweight wheel 763 are arranged in parallel, and are both perpendicular to the conveying direction of the belt 73.

[0051] Preferably, there are multiple counterweight members 764 to adjust the weight of the counterweight.

[0052] Preferably, there are two counterweight rods 761 , which are respectively disposed on both sides of the belt 73 .

[0053] In some preferred embodiments, Figure 6As shown, the belt conveyor 7 also includes a scraper assembly 77; the scraper assembly 77 is used to scrape the surface material on the discharge side of the belt 73, and includes a scraper plate 771, a rotating shaft 772, a bearing 773 and an elastic assembly 774; the bearing 773 is installed on the bracket 71; one side of the scraper plate 771 is connected to the bearing 773 through the rotating shaft 772, and the other side is pressed against the surface of the belt 73 through the elastic assembly 774; based on the setting of the scraper assembly 77, the residual material on the surface of the belt 73 is reduced, and the material loss is further reduced.

[0054] Preferably, the scraper plate 771 is against the middle of the belt 73 attached to the belt roller 72 , that is, after the belt 73 is discharged at the discharge side, the scraper plate 771 scrapes off the material remaining on the belt 73 to reduce the force on the scraper plate 771 .

[0055] Preferably, the scraper plate 771 is an arc-shaped plate, and the thickness gradually decreases from the connecting shaft 772 to the other opposite side, and the edge that abuts against the belt 73 is a sharp end. Since the scraping edge of the scraper plate 771 is a sharp structure, the probability of the material colliding with the end is reduced, thereby reducing the force on the scraper plate 771, ensuring its abutment effect on the belt 73, and thus ensuring the scraping effect.

[0056] In some preferred embodiments, the elastic component 774 includes an elastic member 7741, a lever 7742, a screw 7743 and a nut 7744; one end of the screw 7743 is rotatably connected to the bracket 71, and the other end can pass through the lever 7742; the end of the lever 7742 is sleeved on the rotating shaft 772; the nut 7744 is threaded on the screw 7743; the elastic member 7741 is sleeved on the screw 7743, and abuts against the nut 7744 and the lever 7742, so that the scraper plate 771 abuts against the surface of the belt 73; based on this, the abutment force of the scraper plate 771 on the surface of the belt 73 is improved, the scraping effect is guaranteed, and the consistency of the elastic expansion and contraction direction of the elastic member 7741 is guaranteed, thereby improving its service life. The elastic member 7741 can be optionally a spring.

[0057] In some preferred embodiments, a fume hood 103 is disposed above the slot of the granulation tank 3; the fume hood 103 is used to discharge the waste gas generated by the granulation tank 3 to an external purification system.

[0058] In some preferred embodiments, a magnetic attraction device 104 is further included. The magnetic attraction device 104 is arranged at the discharge end of the belt conveyor 7 and is located above the belt conveyor 7 to magnetically remove impurities from the material on the belt conveyor 7.

[0059] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A blowing slag granulation and transfer system, characterized in that: It includes slag chute, granulation head, granulation tank, slag scooping machine, blowing slag storage pool, screening equipment, belt conveyor equipment and blowing slag batching bin; The granulation head is arranged at the discharge side of the slag chute, and is used to cool and granulate the blowing furnace slag output from the slag chute; The granulation trough is arranged below the discharge port of the slag trough, and is used to receive the slag of the converting furnace after being processed by the granulation head; and the granulation trough includes an inclined trough side surface and a horizontal trough bottom surface for receiving the slag of the converting furnace; The slag scooping machine is used to transport the slag from the converting furnace between the granulation tank and the converting slag storage tank, and between the converting slag storage tank and the screening device; The blowing slag storage tank is used to filter and temporarily store the blowing furnace slag; The screening device is used to remove large pieces of material from the slag of the converting furnace; The belt conveyor is used to transport the material output by the screening device to the blowing slag batching bin.

2. A blowing slag granulation and transfer system according to claim 1, characterized in that: The granulation tank and the blown slag storage tank are arranged adjacent to each other and are connected through an overflow hole; Grilles are provided at both ends of the overflow hole; The grids are filled with pebbles; The bottom surface of the blown slag storage tank is an inclined surface, and a drainage ditch is arranged on the lower side of the inclined surface.

3. A blowing slag granulation and transfer system according to claim 2, characterized in that: The drainage groove is arranged adjacent to the overflow hole and is lower than the overflow hole, and the drainage groove is filled with pebbles.

4. A blowing slag granulation and transfer system according to claim 1, characterized in that: The receiving inclined surface of the granulating trough is paved with a wear-resistant layer.

5. The blowing slag granulation and transfer system according to claim 1, characterized in that: The belt conveyor equipment comprises a bracket, a belt roller, a belt, a roller assembly and a driving member; The belt rollers are rotatably arranged in pairs on the bracket; The belt is wound around the paired belt rollers; The roller assemblies are multiple in number and are rotatably mounted on the bracket, and the multiple roller assemblies form a supporting groove for supporting the belt; The driving member is used for driving the belt roller to rotate.

6. A blowing slag granulation and transfer system according to claim 5, characterized in that: The roller assembly comprises a first roller, a second roller, a third roller and a roller frame; The roller frame is installed on the bracket and rotatably connects the first roller, the second roller and the third roller; The second roller is arranged perpendicular to the extending direction of the belt and is located directly below the upper belt; The first roller and the third roller are symmetrically arranged about the perpendicular midline of the second roller.

7. A blowing slag granulation and transfer system according to claim 5, characterized in that: The belt conveyor equipment also includes a counterweight assembly; The counterweight assembly is used to keep the belt in a taut state.

8. The blowing slag granulation and transfer system according to claim 5, characterized in that: The counterweight assembly includes a counterweight rod, a counterweight frame, a counterweight wheel, a counterweight member and a direction-changing roller; One end of the counterweight rod is rotatably connected to the bracket; The counterweight frame can be movably mounted on the counterweight rod along the counterweight rod, and the counterweight wheel is rotatably mounted on the counterweight frame, and has a mounting position for accommodating the counterweight member; The direction-changing rollers are arranged in pairs at intervals, and are rotatably mounted on the bracket and are located below the lower layer of the belt; The counterweight wheel can bear on the belt between the change-of-direction rollers.

9. A blowing slag granulation and transfer system according to claim 5, characterized in that: The counterweight members are multiple in number.

10. The blowing slag granulation and transfer system according to claim 5, characterized in that: The belt conveyor equipment also includes a scraper assembly; The scraper assembly is used to scrape the surface material on the discharging side of the belt, and comprises a scraper plate, a rotating shaft, a bearing and an elastic assembly; The bearing is mounted on the bracket; One side of the scraper plate is connected to the bearing through the rotating shaft, and the other side thereof is pressed against the belt surface through the elastic component.

11. A blowing slag granulation and transfer system according to claim 10, characterized in that: The elastic component comprises an elastic member, a lever, a screw and a nut; One end of the screw rod is rotatably connected to the bracket, and the other end can pass through the lever; The end of the lever is sleeved and fixed on the rotating shaft; The nut is threadedly connected to the screw rod; The elastic member is sleeved on the screw rod and abuts against the nut and the shifting rod, so that the scraper plate abuts against the belt surface.

12. A blowing slag granulation and transfer system according to claim 10, characterized in that: The scraper plate is an arc-shaped plate, and the thickness gradually decreases from the side connected to the rotating shaft to the other side opposite to the scraper plate, and the edge against the belt is a sharp end.

13. The blowing slag granulation and transfer system according to claim 1, characterized in that: A smoke exhaust hood is provided above the notch of the granulation tank; The exhaust hood is used to discharge the waste gas generated by the granulation tank to an external purification system.

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