Composite Metallurgical Pellet Bentonite Preparation Production Line

Abstract

The present invention provides a production line for preparing bentonite for composite metallurgical pellets, including a foundation. A belt conveyor is fixedly connected to the upper end surface of the foundation. A soda ash feeding hopper is connected above the belt conveyor. A feeding device is installed on one side of the soda ash feeding hopper. The output end of the belt conveyor is connected to the feeding port of a Raymond mill. The air inlet end of the Raymond mill is fixedly connected to a blower by bolts. Through the cooperation of the belt conveyor and the soda ash feeding hopper, the present invention realizes the conveyance of bentonite and soda ash into the Raymond mill together. Then, sodium modification is carried out by the Raymond mill. The powdered materials after sodium modification will be sent into a powder collector for storage through the cooperation of the blower and the discharge pipe. At this time, the screw blades in the mixing device will mix with the special composite soil additives in the composite additive storage tank. The mixed powder will be sent into a finished product tank for homogenization through the cooperation of an exhaust fan and a feeding pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of pellet bentonite preparation, and specifically relates to a production line for preparing composite metallurgical pellet bentonite. Background Art

[0002] Bentonite for metallurgical pellets is an iron ore pellet binder; due to its strong adhesiveness and high-temperature stability, 1-2% of sodium-based bentonite is added to iron ore concentrate powder, and after granulation and drying, it becomes pellets, which can greatly improve the production capacity of blast furnaces and has now been widely adopted by various steel mills.

[0003] In the current production line, the dust-removed bentonite is directly output to the storage tank for homogenization storage, but the adhesiveness of the metallurgical pellet bentonite produced by this step is insufficient, resulting in a slow pelletizing speed during the metallurgical pelletizing process. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a production line for preparing composite metallurgical pellet bentonite, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] A production line for preparing composite metallurgical pellet bentonite, including a foundation, on the upper end surface of the foundation is fixedly connected a belt conveyor, above the belt conveyor is connected a soda ash feeding hopper, on one side of the soda ash feeding hopper is installed a feeding device, the output end of the belt conveyor is connected to the feeding port of a Raymond mill, the air inlet end of the Raymond mill is fixedly connected by bolts to a blower, the upper end surface of the Raymond mill is communicated with the inner cavity of a powder collector through a discharge pipe, the upper end surface of the powder collector is communicated with the inner cavity of the blower through a return air pipe, the inner cavity of the blower is communicated with the inner cavity of a dust collector through an exhaust pipe, the lower end surface of the powder collector is installed with a mixing device, one end of the mixing device is communicated with a finished product tank through a feeding pipe, the upper end surface of the finished product tank is communicated with an exhaust fan through an exhaust pipe, on the upper end surface of the foundation is fixedly connected a composite additive storage tank, and the lower part of the inner cavity of the composite additive storage tank is communicated with the inner cavity of the mixing device.

[0007] The composite additive includes a polymer material and an inorganic salt, and the polymer material includes sodium carboxymethylcellulose.

[0008] Further, the mixing device is composed of a screw pipe, the lower end surfaces of the powder collector and the composite additive storage tank are fixedly connected with the screw pipe, on one side of the screw pipe is fixedly connected a screw motor, the output shaft end of the screw motor is fixedly connected with a screw blade, one end of the screw pipe is communicated with the inner cavity of the finished product tank through a feeding pipe, the inner cavity of the screw pipe is respectively communicated with the inner cavities of the powder collector and the composite additive storage tank, and a valve is installed in the lower part of the inner cavity of the composite additive storage tank.

[0009] Further, a dust-proof net is fixedly connected to the upper part of the inner cavity of the finished product tank.

[0010] Further, the belt conveyor is composed of a conveyor frame, a driving roller, a driven roller, a conveyor motor and a conveyor belt. Tooth brushes are fixedly connected to the upper end surface of the conveyor frame and close to one end of the soda ash feeding hopper, and the teeth between the two tooth brushes are arranged in a staggered manner.

[0011] Further, the feeding device includes an electric telescopic rod. The electric telescopic rod is fixedly connected to the upper end surface of the foundation. The upper end surface of the electric telescopic rod is rotatably connected to an angle rod. An arc-shaped groove is arranged on the outer surface of the angle rod. A ring sleeve is slidably connected to the outer surface of the angle rod. A convex block is fixedly connected to the inner cavity of the ring sleeve. The convex block is slidably connected to the inner cavity of the arc-shaped groove. An extension rod is fixedly connected to the upper end surface of the soda ash feeding hopper, and a hook is fixedly connected to one end of the lower end surface of the extension rod.

[0012] Further, a cutting device is installed in the upper part of the inner cavity of the soda ash feeding hopper, a dust-proof device is installed on the upper end surface of the soda ash feeding hopper, and an auxiliary device is installed in the inner cavity of the soda ash feeding hopper.

[0013] Further, the cutting device includes a U-shaped frame. The U-shaped frame is installed at one end of the upper end surface of the soda ash feeding hopper. A clamping threaded rod is threadedly connected to the inner cavity of the U-shaped frame. One end of the clamping threaded rod is rotatably connected to a clamping piece. A blade clamp is fixedly connected to one side of the U-shaped frame, and a blade is fixedly connected to one side of the blade clamp through a bolt.

[0014] Further, the dust-proof device includes a pressing rod and a dust-proof gear. The pressing rod is fixedly connected to the upper part of the outer surface of the electric telescopic rod. A dust-proof gear is rotatably connected to one side of the soda ash feeding hopper. The dust-proof gear is meshed with a dust-proof rack. One end of the dust-proof rack is fixedly connected to a dust-proof cover. A limiting rod is fixedly connected to one side of the dust-proof cover. The limiting rod is slidably connected to the outer surface of a limiting sleeve. The limiting sleeve is fixedly connected to one side of the soda ash feeding hopper. The dust-proof rack is meshed with a tightening rack. A damping rod is fixedly connected between the tightening rack and the soda ash feeding hopper.

[0015] Further, the auxiliary device includes a feeding motor. The feeding motor is fixedly connected to one side of the soda ash feeding hopper. A feeding vane is fixedly connected to the output shaft end of the feeding motor. The output shaft end of the feeding motor is rotatably connected to a turntable through a sprocket group and a chain. A cylinder is fixedly connected to one side of the turntable. A swing rod is slidably connected to the outer surface of the cylinder. A swing shaft is fixedly connected to one side of the swing rod. A knocking rod is fixedly connected to one end of the swing shaft. A feeding vane is rotatably connected to the lower part of the inner cavity of the soda ash feeding hopper, and a knocking rod is rotatably connected to the upper part of the inner cavity of the soda ash feeding hopper.

[0016] The present invention provides a production line for preparing bentonite for composite metallurgy pellet. Compared with the prior art, it has the following beneficial effects:

[0017] 1. Through the cooperation of the belt conveyor and the soda ash hopper, bentonite and about 2.5 - 3.5% of soda ash are conveyed into the Raymond mill together. Then, sodium modification is carried out by the Raymond mill. After sodium modification, the powder will be sent into the powder collector for storage through the cooperation of the blower and the discharge pipe. The air in the powder collector will enter the blower through the return air pipe to form a cycle, and the excess gas in the blower will be discharged after dust removal by the dust collector. When the powder collector contains sodium-modified bentonite, at this time, the screw blade in the mixing device will mix with the special composite soil additive in the composite additive storage tank. The mixed powder will be sent into the finished product tank for homogenization through the cooperation of the exhaust fan and the feeding pipe.

[0018] 2. Through the mutual cooperation of the electric telescopic rod, the angle rod and the arc-shaped groove, the ton bag for loading soda ash is moved above the soda ash hopper. Then, through the cooperation of the blade, the ton bag is cut open for discharging. Before discharging, through the cooperation of the tightening rack and the dust-proof rack, the two dust-proof covers will approach each other, so that the ton bag is wrapped in the soda ash hopper through the dust-proof covers to prevent dust from overflowing. Then, through the cooperation of the feeding motor and the knocking rod, the ton bag is knocked, making the ton bag discharge faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Shows the overall structural schematic diagram of the present invention;

[0021] Figure 2 Shows the overall top view structural schematic diagram of the present invention;

[0022] Figure 3 Shows the overall structural schematic diagram of another perspective of the present invention;

[0023] Figure 4 Shows the sectional view of the bottom view of the present invention;

[0024] Figure 5 Shows the structural schematic diagram of the mixing device of the present invention;

[0025] Figure 6 Shows the structural schematic diagram of the toothbrush of the present invention;

[0026] Figure 7 Shows the structural schematic diagram of the soda ash hopper and the feeding device of the present invention;

[0027] Figure 8 Shows the structural schematic diagram of the soda ash hopper and the dust-proof device of the present invention;

[0028] Figure 9 Shows the partial sectional structural schematic diagram of the soda ash hopper of the present invention;

[0029] Figure 10 Shows the structural schematic diagram of the angle rod of the present invention;

[0030] Figure 11 Shows the structural schematic diagram of the placing device and the ton bag of the present invention;

[0031] As shown in the figure: 1. Foundation; 2. Belt conveyor; 3. Soda ash hopper; 4. Feeding device; 41. Electric telescopic rod; 42. Angle rod; 43. Arc groove; 44. Ring sleeve; 45. Convex block; 46. Extension rod; 47. Hook; 5. Raymond mill; 6. Blower; 7. Discharge pipe; 8. Powder collector; 9. Return air pipe; 10. Exhaust pipe; 11. Dust collector; 12. Mixing device; 121. Screw conveyor pipe; 122. Screw conveyor motor; 123. Screw conveyor blade; 13. Feeding pipe; 14. Finished product tank; 15. Exhaust pipe; 16. Exhaust fan; 17. Composite additive storage tank; 18. Dust-proof net; 19. Cutting device; 191. U-shaped frame; 192. Clamping screw rod; 193. Clamping piece; 194. Blade clamp; 195. Blade; 20. Dust-proof device; 201. Pressure rod; 202. Dust-proof gear; 203. Dust-proof rack; 204. Dust-proof cover; 205. Limit rod; 206. Limit sleeve; 207. Tightening rack; 208. Damping rod; 21. Auxiliary device; 211. Feeding motor; 212. Feeding vane; 213. Turntable; 214. Cylinder; 215. Swing rod; 216. Swing shaft; 217. Knocking rod; 22. Toothbrush. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] To solve the technical problems in the background art, the following composite metallurgical pellet bentonite preparation production line is given:

[0035] Combined Figures 1-11 As shown in the figure, the bentonite preparation production line for composite metallurgy pellet provided by the present invention includes a foundation 1. A belt conveyor 2 is fixedly connected to the upper end surface of the foundation 1. A soda ash hopper 3 is connected to the upper part of the belt conveyor 2. A feeding device 4 is installed on one side of the soda ash hopper 3. The output end of the belt conveyor 2 is connected to the feeding port of a Raymond mill 5. The air inlet end of the Raymond mill 5 is fixedly connected to a blower 6 by bolts. The upper end surface of the Raymond mill 5 is communicated with the inner cavity of a powder collector 8 through a discharge pipe 7. The upper end surface of the powder collector 8 is communicated with the inner cavity of the blower 6 through a return air pipe 9. The inner cavity of the blower 6 is communicated with the inner cavity of a dust collector 11 through an exhaust pipe 10. A mixing device 12 is installed on the lower end surface of the powder collector 8. One end of the mixing device 12 is communicated with a finished product tank 14 through a feeding pipe 13. The upper end surface of the finished product tank 14 is communicated with an exhaust fan 16 through an exhaust pipe 15. A composite additive storage tank 17 is fixedly connected to the upper end surface of the foundation 1. The lower part of the inner cavity of the composite additive storage tank 17 is communicated with the inner cavity of the mixing device 12.

[0036] Through the cooperation of the belt conveyor 2 and the soda ash hopper 3, bentonite and about 2.5 - 3.5% of soda ash are conveyed into the Raymond mill 5 together. Then, sodium modification is carried out by the Raymond mill 5. The powdered material after sodium modification will be sent into the powder collector 8 for storage through the cooperation of the blower 6 and the discharge pipe 7. The air in the powder collector 8 will enter the blower 6 through the return air pipe 9 to form a cycle. The excess gas in the blower 6 will be discharged into the dust collector 11 through the exhaust pipe 10 for dust removal. When the powder collector 8 contains bentonite after sodium modification, at this time, the auger blade 123 in the mixing device 12 will mix with the special composite soil additive in the composite additive storage tank 17. The mixed powder will be sent into the finished product tank 14 for homogenization through the cooperation of the exhaust fan 16 and the feeding pipe 13.

[0037] As an improvement of the above technical solution, the mixing device 12 is composed of an auger pipe 121. The auger pipe 121 is fixedly connected to the lower end surfaces of the powder collector 8 and the composite additive storage tank 17. An auger motor 122 is fixedly connected to one side of the auger pipe 121. The output shaft end of the auger motor 122 is fixedly connected to an auger blade 123. One end of the auger pipe 121 is communicated with the inner cavity of the finished product tank 14 through a feeding pipe 13. The inner cavity of the auger pipe 121 is respectively communicated with the inner cavities of the powder collector 8 and the composite additive storage tank 17. A valve is installed in the lower part of the inner cavity of the composite additive storage tank 17. A dust-proof net 18 is fixedly connected to the upper part of the inner cavity of the finished product tank 14.

[0038] Through the mutual cooperation of the auger pipe 121, the auger motor 122 and the auger blades 123, the sodium-modified bentonite in the powder collector 8 can be fully mixed with the special compound soil additive in the compound additive storage tank 17 (the special compound soil additive is generally composed of a variety of polymer materials and some effective inorganic salts). While achieving full mixing, feeding is also realized. Then, the exhaust fan 16 cooperates with the exhaust pipe 15 to extract air from the finished product tank 14. When extracting air, the finished product tank 14 will suck the mixed powder in the inner cavity of the auger pipe 121 into the finished product tank 14 through the feeding pipe 13 for storage. The dust-proof net 18 in the finished product tank 14 can prevent the powder particles in the finished product tank 14 from overflowing. Through the addition and mixing of the special compound soil additive, the adhesiveness and rapid water absorption of the finished product can be greatly improved; during the metallurgical pelletizing process, it can promote rapid pelletization and reduce the breakage rate of green pellets; at the same time, it can significantly reduce the addition amount of bentonite. As a result, not only can various indexes in the pelletizing process be improved, but also the iron content of the finished pellets will be increased by about 0.66% compared with ordinary bentonite, greatly improving the processing efficiency and economic benefits.

[0039] Example Two

[0040] As Figures 1-11 shown, on the basis of the above embodiment, this embodiment further gives the following content:

[0041] In order to make the bentonite be sodium-modified faster, the following design is given in this embodiment: The belt conveyor 2 is composed of a conveyor frame, a driving roller, a driven roller, a conveyor motor and a conveyor belt. Tooth brushes 22 are fixedly connected to the upper end surface of the conveyor frame and close to one end of the soda ash feeding hopper 3, and the teeth between the two tooth brushes 22 are arranged in a staggered manner.

[0042] Through the above-mentioned tooth brushes 22 and the staggered installation between multiple tooth brushes 22, the preliminary mixing of bentonite and soda ash can be helped, facilitating the later Raymond mill to sodium-modify the bentonite faster.

[0043] Example Three

[0044] As Figures 1-11 shown, on the basis of the above embodiment, this embodiment further gives the following content:

[0045] In order to enable the mixing of bentonite and soda ash, the following problems need to be solved: 1. Soda ash feeding; 2. Uniform feeding of soda ash. Therefore, the following technical solutions are given in this embodiment:

[0046] The feeding device 4 includes an electric telescopic rod 41. The upper end surface of the foundation 1 is fixedly connected to the electric telescopic rod 41. The upper end surface of the electric telescopic rod 41 is rotatably connected to an angle rod 42. An arc-shaped groove 43 is provided on the outer surface of the angle rod 42. A ring sleeve 44 is slidably connected to the outer surface of the angle rod 42. A convex block 45 is fixedly connected to the inner cavity of the ring sleeve 44. The convex block 45 is slidably connected to the inner cavity of the arc-shaped groove 43. An extension rod 46 is fixedly connected to the upper end surface of the soda ash hopper 3. One end of the lower end surface of the extension rod 46 is fixedly connected to a hook 47. A cutting device 19 is installed in the upper part of the inner cavity of the soda ash hopper 3. A dust-proof device 20 is installed on the upper end surface of the soda ash hopper 3. An auxiliary device 21 is installed in the inner cavity of the soda ash hopper 3. The cutting device 19 includes a U-shaped frame 191. A U-shaped frame 191 is installed at one end of the upper end surface of the soda ash hopper 3. A clamping threaded rod 192 is threadedly connected to the inner cavity of the U-shaped frame 191. One end of the clamping threaded rod 192 is rotatably connected to a clamping piece 193. A blade clamp 194 is fixedly connected to one side of the U-shaped frame 191. A blade 195 is fixedly connected to one side of the blade clamp 194 by bolts. The dust-proof device 20 includes a pressure rod 201 and a dust-proof gear 202. The upper part of the outer surface of the electric telescopic rod 41 is fixedly connected to the pressure rod 201. A dust-proof gear 202 is rotatably connected to one side of the soda ash hopper 3. The dust-proof gear 202 is meshed with a dust-proof rack 203. One end of the dust-proof rack 203 is fixedly connected to a dust-proof cover 204. A limiting rod 205 is fixedly connected to one side of the dust-proof cover 204. The limiting rod 205 is slidably connected to the outer surface of a limiting sleeve 206. The limiting sleeve 206 is fixedly connected to one side of the soda ash hopper 3. The dust-proof rack 203 is meshed with a tightening rack 207. A damping rod 208 is fixedly connected between one side of the tightening rack 207 and the soda ash hopper 3. The auxiliary device 21 includes a feeding motor 211. The feeding motor 211 is fixedly connected to one side of the soda ash hopper 3. A feeding vane 212 is fixedly connected to the output shaft end of the feeding motor 211. The output shaft end of the feeding motor 211 is rotationally connected to a turntable 213 through a sprocket set and a chain. A cylinder 214 is fixedly connected to one side of the turntable 213. A swing rod 215 is slidably connected to the outer surface of the cylinder 214. A swing shaft 216 is fixedly connected to one side of the swing rod 215. A knocking rod 217 is fixedly connected to one end of the swing shaft 216. The feeding vane 212 is rotatably connected to the lower part of the inner cavity of the soda ash hopper 3. The knocking rod 217 is rotatably connected to the upper part of the inner cavity of the soda ash hopper 3.

[0047] First, place the ton bag containing soda ash on the hook 47. After placing it, start the electric telescopic rod 41 through an external power source at this time. The electric telescopic rod 41 will drive the angle rod 42 to move upward. When the angle rod 42 moves upward, it will drive the extension rod 46, the hook 47, and the entire ton bag to move upward. As the extension rod 46 moves upward, the arc groove 43 on the outer surface of the angle rod 42 will slide on the convex block 45 in the annular sleeve 44. As the angle rod 42 rises, the cooperation between the arc groove 43 and the convex block 45 will cause the angle rod 42 to rotate at a certain angle. When the angle rod 42 rotates, it will drive the extension rod 46 and the hook 47 to move the ton bag onto the blade 195. At this time, the ton bag will continue to rotate and move. Then, the lower part of the ton bag can be cut open by the blade 195. Since both ends of the blade 195 are provided with arcs, it can prevent the problem of hanging with the ton bag. Since the blade 195 is fixedly connected to the blade clamp 194 by bolts, it is convenient for the later disassembly, installation, and replacement of the blade. Since the blade as a whole adopts the cooperation of the U-shaped frame 191 and the clamping threaded rod 192, it is convenient to adjust the position of the blade 195 in the inner cavity of the soda ash hopper 3. The soda ash in the cut ton bag will fall into the soda ash hopper 3 for storage. When the angle rod 42 rotates, the pressing rod 201 outside the electric telescopic rod 41 will start to squeeze and tighten the tightening rack 207 upward. When the tightening rack 207 moves, it will stretch the damping rod 208. (Since a spring is sleeved on the outer surface of the damping rod 208, the spring outside the damping rod 208 will also be stretched). When the tightening rack 207 moves upward, it will drive the dust-proof gear 202 to rotate. When the dust-proof gear 202 rotates, it will drive the two dust-proof racks 203 to approach each other. When the dust-proof racks 203 approach each other, the dust-proof covers 204 will approach each other, so as to wrap the ton bag in the soda ash hopper 3 through the dust-proof covers 204 to prevent dust from overflowing during feeding. When the ton bag is cut, start the feeding motor 211 through an external power source at this time. When the feeding motor 211 works, it will drive the turntable 213 to rotate through the sprocket group and the chain. When the turntable 213 rotates, it will drive the cylinder 214 to rotate in a circle. When the cylinder 214 rotates, it will slide in the swing rod 215, thereby driving the swing rod 215 to swing up and down. When the swing rod 215 swings, it will drive the swing shaft 216 to rotate. When the swing shaft 216 swings, it will drive the knocking rod 217 to swing. When the knocking rod 217 swings, it will start to knock on the ton bag, making the feeding faster. When the feeding motor 211 rotates, it will drive the feeding vane 212 to rotate. When the feeding vane 212 rotates, the uniform feeding of soda ash will be realized.

[0048] The working principle and usage process of the present invention:

[0049] In the usage state:

[0050] S1, Soda ash feeding;

[0051] 1), First, place the U-shaped frame 191 on the upper end face of the soda ash hopper 3 and then rotate and clamp the threaded rod 192. The clamping threaded rod 192 will drive the clamping piece 193 to move towards one side of the soda ash hopper 3, so that the blade 195 is fixed in place by the cooperation of the clamping threaded rod 192 and the clamping piece 193;

[0052] 2), After fixation, place the ton bag for loading soda ash on the hook 47. After placing it, start the electric telescopic rod 41 through an external power source. The electric telescopic rod 41 will drive the angle rod 42 to move upward. When the angle rod 42 moves upward, it will drive the extension rod 46, the hook 47 and the ton bag as a whole to move upward. As the extension rod 46 moves upward, the arc groove 43 on the outer surface of the angle rod 42 will slide on the convex block 45 in the annular sleeve 44. As the angle rod 42 rises, the cooperation of the arc groove 43 and the convex block 45 will cause the angle rod 42 to rotate at a certain angle. When the angle rod 42 rotates, it will drive the extension rod 46 and the hook 47 to move the ton bag onto the blade 195. At this time, the ton bag will continue to rotate and move. Then, the lower part of the ton bag can be cut open by the blade 195. Since the two ends of the blade 195 are provided with arcs, it can prevent the problem of hanging with the ton bag. Since the blade 195 is fixedly connected to the blade clamp 194 by bolts, it is convenient for the later disassembly and replacement of the blade. The soda ash in the cut ton bag will fall into the soda ash hopper 3 for storage,

[0053] 3), When the angle rod 42 rotates, the pressure rod 201 outside the electric telescopic rod 41 will start to squeeze and tighten the tightening rack 207 upward. When the tightening rack 207 moves, it will stretch the damping rod 208 (since a spring is sleeved on the outer surface of the damping rod 208, the spring outside the damping rod 208 will also be stretched). When the tightening rack 207 moves upward, it will drive the dust-proof gear 202 to rotate. When the dust-proof gear 202 rotates, it will drive the two dust-proof racks 203 to approach each other. When the dust-proof racks 203 approach each other, the dust-proof covers 204 will approach each other, so that the ton bag is wrapped in the soda ash hopper 3 by the dust-proof covers 204 to prevent dust from overflowing during feeding,

[0054] 4) When the ton bag is cut, the feeding motor 211 is started through an external power supply at this time. When the feeding motor 211 works, it will drive the turntable 213 to rotate through the sprocket group and the chain. When the turntable 213 rotates, it will drive the cylinder 214 to rotate in a circle. When the cylinder 214 rotates, it will slide inside the swing rod 215, thereby driving the swing rod 215 to swing up and down. When the swing rod 215 swings, it will drive the swing shaft 216 to rotate. When the swing shaft 216 swings, it will drive the knocking rod 217 to swing. When the knocking rod 217 swings, it will start to knock the ton bag, making the feeding faster.

[0055] S2. Premixing of bentonite and soda ash. First, start the belt conveyor 2 through an external power supply, and then place the bentonite on the belt of the belt conveyor 2. After placing it, the bentonite can be conveyed into the inner cavity of the Raymond mill 5 by the belt conveyor 2 at this time. When the bentonite is conveyed, the feeding vane 212 will be driven to rotate when the working feeding motor 211 rotates. When the feeding vane 212 rotates, uniform feeding of soda ash will be realized. About 2.5 - 3.5% of the uniformly fed soda ash will fall above the bentonite. As the belt conveyor 2 conveys, the soda ash and bentonite will enter the lower part of the toothbrush 22. Since there are multiple toothbrushes 22 and they are arranged in a staggered manner, preliminary mixing of bentonite and soda ash can be realized.

[0056] S3. Sodium modification of bentonite. When the bentonite and soda ash enter the Raymond mill 5, the Raymond mill 5 starts to work after being connected to an external power supply. After the Raymond mill 5 works, the large raw materials will be crushed into granular, and through the cooperation of high temperature and soda ash, the bentonite will be sodium-modified.

[0057] S4. Collection of sodium-modified bentonite. The sodium-modified bentonite will be blown into the powder collector 8 under the action of the blower 6 and then through the cooperation of the discharge pipe 7. Then, through the return air pipe 9 on the upper part of the powder collector 8, the blown air will be discharged back into the blower 6. When the air volume in the blower 6 is too large, at this time, the air and dust in the blower 6 will be discharged into the dust collector 11 through the discharge pipe 10. At this time, the dust collector 11 can start to filter the dust in the air, and the filtered air will be discharged.

[0058] S5. Mixing the sodium-activated bentonite with the special additive for composite soil. After the sodium-activated bentonite enters the powder collector 8, the auger motor 122 is started by an external power supply. The auger motor 122 drives the auger blade 123 to rotate. When the auger blade 123 rotates, it starts to convey the sodium-activated bentonite. When the sodium-activated bentonite is conveyed to the lower part of the composite additive storage tank 17, the special additive for composite soil inside the composite additive storage tank 17 enters the inner cavity of the auger pipe 121 and is mixed with the sodium-activated bentonite. And it is mixed by the auger blade 123. The mixed powder is drawn into the finished product tank 14 by the cooperation of the exhaust fan 16 and the exhaust duct 15 for homogenization. When the exhaust fan 16 draws air, the dust-proof net 18 in the finished product tank 14 can prevent the powder from being drawn out at this time, thus completing the processing of bentonite as a whole.

[0059] Total: Due to the addition of the special additive for composite soil, the bonding property and rapid water absorption of the finished product can be greatly improved; in the process of metallurgical pelletizing, it can promote rapid pelletization and reduce the breakage rate of green pellets; at the same time, it can greatly reduce the addition amount of bentonite. Therefore, not only can various indexes in the pelletizing process be improved, but also the iron content of the finished pellets will be increased by about 0.66% compared with ordinary bentonite, greatly improving the processing efficiency and economic benefits.

[0060] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Composite metallurgical pellet bentonite preparation production line, characterized in that: It includes a foundation. A belt conveyor is fixedly connected to the upper end surface of the foundation. A soda ash hopper is connected to the upper part of the belt conveyor. A feeding device is installed on one side of the soda ash hopper. The output end of the belt conveyor is connected to the feeding port of a Raymond mill. The air inlet end of the Raymond mill is fixedly connected with a blower through bolts. The upper end surface of the Raymond mill is communicated with the inner cavity of a powder collector through a discharge pipe. The upper end surface of the powder collector is communicated with the inner cavity of the blower through a return air pipe. The inner cavity of the blower is communicated with the inner cavity of a dust collector through an exhaust pipe. A mixing device is installed on the lower end surface of the powder collector. One end of the mixing device is communicated with a finished product tank through a feeding pipe. The upper end surface of the finished product tank is communicated with an exhaust fan through an air extraction pipe. A composite additive storage tank is fixedly connected to the upper end surface of the foundation. The lower part of the inner cavity of the composite additive storage tank is communicated with the inner cavity of the mixing device. The composite additive storage tank is used to discharge the composite additive into the mixing device so that the bentonite powder and the composite additive are fully mixed; The feeding device includes an electric telescopic rod. The upper end face of the foundation is fixedly connected with an electric telescopic rod. The upper end face of the electric telescopic rod is rotatably connected with an angle rod. An arc-shaped groove is arranged on the outer surface of the angle rod. A ring sleeve is slidably connected to the outer surface of the angle rod. A convex block is fixedly connected to the inner cavity of the ring sleeve. The convex block is slidably connected to the inner cavity of the arc-shaped groove. The upper end face of the soda ash hopper is fixedly connected with an extension rod. One end of the lower end face of the extension rod is fixedly connected with a hook. The mixing device is composed of a screw pipe. The lower end faces of the powder collector and the compound additive storage tank are fixedly connected with a screw pipe. A screw motor is fixedly connected to one side of the screw pipe. The output shaft end of the screw motor is fixedly connected with a screw blade. One end of the screw pipe is communicated with the inner cavity of the finished product tank through a feeding pipe. The inner cavity of the screw pipe is respectively communicated with the inner cavities of the powder collector and the compound additive storage tank. A valve is installed in the lower part of the inner cavity of the compound additive storage tank. A cutting device is installed in the upper part of the inner cavity of the soda ash hopper. A dust-proof device is installed on the upper end face of the soda ash hopper. An auxiliary device is installed in the inner cavity of the soda ash hopper. The cutting device includes a U-shaped frame. One end of the upper end face of the soda ash hopper is installed with a U-shaped frame. A clamping screw rod is threadedly connected to the inner cavity of the U-shaped frame. One end of the clamping screw rod is rotatably connected with a clamping piece. A blade clamp is fixedly connected to one side of the U-shaped frame. A blade is fixedly connected to one side of the blade clamp through a bolt. The dust-proof device includes a pressure rod and a dust-proof gear. The upper part of the outer surface of the electric telescopic rod is fixedly connected with a pressure rod. A dust-proof gear is rotatably connected to one side of the soda ash hopper. The dust-proof gear is meshed with a dust-proof rack. One end of the dust-proof rack is fixedly connected with a dust-proof cover. A limiting rod is fixedly connected to one side of the dust-proof cover. The limiting rod is slidably connected to the outer surface of a limiting sleeve. The limiting sleeve is fixedly connected to one side of the soda ash hopper. The dust-proof rack is meshed with a tightening rack. A damping rod is fixedly connected between the tightening rack and the soda ash hopper on one side. The auxiliary device includes a feeding motor. The feeding motor is fixedly connected to one side of the soda ash hopper. The output shaft end of the feeding motor is fixedly connected with a feeding vane plate. The output shaft end of the feeding motor is rotationally connected with a turntable through a sprocket set and a chain. A cylinder is fixedly connected to one side of the turntable. A swing rod is slidably connected to the outer surface of the cylinder. One side of the swing rod is fixedly connected with a swing shaft. One end of the swing shaft is fixedly connected with a knocking rod. A feeding vane plate is rotatably connected to the lower part of the inner cavity of the soda ash hopper. A knocking rod is rotatably connected to the upper part of the inner cavity of the soda ash hopper.

2. The composite metallurgical pellet bentonite preparation production line according to claim 1, characterized in that: The compound additive includes a polymer material and an inorganic salt. The polymer material includes sodium carboxymethyl cellulose.

3. The composite metallurgical pellet bentonite preparation production line according to claim 1, characterized in that: A dust-proof net is fixedly connected to the upper part of the inner cavity of the finished product tank.

4. The composite metallurgical pellet bentonite preparation production line according to claim 1, characterized in that: The belt conveyor is composed of a conveying frame, a driving roller, a driven roller, a conveying motor and a conveyor belt. Tooth brushes are fixedly connected to the upper end face of the conveying frame and close to one end of the soda ash hopper. The teeth between the two tooth brushes are arranged in a staggered manner.

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