Self-cleaning feeding device for magnesite reinforced flotation

Abstract

The invention discloses a self-cleaning feeding device for magnesite reinforced flotation, and belongs to the technical field of purification feeding, the self-cleaning feeding device comprises a material placing frame and a material mixing pipe, the bottom end of the material placing frame is fixedly connected with a blanking hopper, a screening cylinder is arranged below the blanking hopper, a screening assembly is arranged on the outer side of the screening cylinder, and a separation pipe is arranged below the screening assembly. Through the arrangement of the screening barrel and the check assembly, iron ions in slurry can be subjected to solid precipitation through PH adjustment, the iron ions in the slurry are preliminarily screened out through centrifugal force generated by rotation of the screening barrel, an impeller part is driven to rotate through liquid flowing subsequently, and residual magnesium carbonate in iron-containing impurities is dispersed and filtered out; the three material mixing boxes are arranged, a large number of iron ions can be screened out before flotation, meanwhile, the gear assemblies and the mixing lantern rings are arranged, the mixing lantern rings can be used for driving the three material mixing boxes to rotate, all materials are evenly added in the slurry flowing process, the mixing structure is optimized, and it is avoided that a large number of foam is generated through stirring, and magnesium loss is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of purification feeding, and particularly relates to a self-cleaning feeding device for enhanced flotation of magnesite ore. Background Art

[0002] Magnesite crystals belong to carbonate minerals of the trigonal crystal system, usually in the form of granular or cryptocrystalline dense massive, the latter is also called porcelain magnesite, white or grayish-white, yellow to brown when containing iron, with vitreous luster.

[0003] Before flotation, magnesite ore usually needs to be slurried with water after crushing and the pH value is adjusted to prepare for flotation, and appropriate collectors, frothers and other agents are added according to the ore properties for subsequent flotation. However, during the flotation process, if the magnesite slurry contains iron ions, the iron ions adsorb on the surface of magnesite, changing its surface properties, thus affecting the floatability of the mineral. At the same time, the iron ions may compete with the collector for adsorption sites, reducing the effectiveness of the collector, and then resulting in poor flotation effect of magnesite. And before the flotation of magnesite, the collector and frother are added to the stirring tank for feeding, and then the collector and frother are fully mixed with the magnesite slurry through stirring. However, during this process, large mechanical stirring and the addition of frother will cause more foam to be generated in the feeding mechanism. These foams usually contain more magnesium-containing minerals. In order not to affect the concentration and pH value of the flotation pulp, the residual foam in the feeding mechanism is difficult to enter the flotation cell through flushing or other means, resulting in poor purification effect of magnesite. Therefore, a self-cleaning feeding device for enhanced flotation of magnesite ore is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that during the flotation process, if the magnesite slurry contains iron ions, the iron ions adsorb on the surface of magnesite, changing its surface properties, thus affecting the floatability of the mineral. At the same time, the iron ions may compete with the collector for adsorption sites, reducing the effectiveness of the collector, and then resulting in poor flotation effect of magnesite, and a self-cleaning feeding device for enhanced flotation of magnesite ore is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: A self-cleaning feeding device for enhanced flotation of magnesite ore, including a material placing frame and a mixing pipe. The bottom end of the material placing frame is fixedly connected with a feeding hopper. A screening cylinder is arranged below the feeding hopper. A screening assembly is arranged outside the screening cylinder. A separation pipe is arranged below the screening assembly. A material selection pipe is arranged outside the separation pipe. A recheck assembly is arranged at the lower end of the separation pipe; The outer sidewall of the mixing pipe is fixedly connected with a mixing motor through a mounting seat. The mixing motor is connected with a mixing collar through a gear assembly. Three mixing boxes are connected to the outer sidewall of the mixing collar. The outer end of the mixing pipe is fixedly connected with a pressurized flat pipe. The end of the pressurized flat pipe is fixedly connected with a plurality of feeding hoses. Adjusting assemblies for adjusting the feeding hoses are arranged on both sides of the pressurized flat pipe.

[0006] Preferably, the bottom end of the material placing frame is fixedly connected with a base through a plurality of support rods. The plurality of support rods are fixedly connected with a platform seat. The top end of the platform seat is fixedly connected with a sleeve. The bottom end of the platform seat is respectively fixedly connected with the top ends of a separation pipe and a material selection pipe.

[0007] Preferably, the screening assembly is composed of an annular guide groove and a grille cover. The bottom end of the annular guide groove is rotatably connected with the top end of the grille cover. The bottom end of the grille cover is rotatably connected with a base. The bottom end of the base is fixedly connected with the top end of the platform seat. A plurality of sieve holes corresponding to the grille cover vertically are formed in the screening cylinder. The sleeve is fixedly connected with the annular guide groove through a plurality of arc-shaped plates.

[0008] Preferably, the bottom end of the screening cylinder is rotatably connected with the top end of the base. A through hole is formed in the bottom end of the base. An electric control pin shaft is fixedly connected to the inner sidewall of the through hole. Two semi-circular plates are rotatably connected to the outer sidewall of the electric control pin shaft.

[0009] Preferably, two electric control guide rails are fixedly connected to the top end of the base. Two guide seats are arranged on the electric control guide rails. The mixing pipe is slidably connected with the electric control guide rails through the outer guide seats. The material selection pipe is fixedly connected with the electric control guide rails through the inner guide seats.

[0010] Preferably, the rechecking assembly is composed of an impeller part and a plurality of scraping plates. A sieve plate is assembled and connected to the lower end of the separation pipe. The end of the sieve plate is rotatably connected with the impeller part through a rotating shaft. A plurality of scraping plates are fixedly connected to the outer sidewall of the rotating shaft. The mixing pipe is assembled and connected with the material selection pipe.

[0011] Preferably, the gear assembly is composed of a mixing gear and a mixing gear ring. The mixing motor is fixedly connected with the mixing gear through a driving shaft. The mixing gear is meshed with the mixing gear ring. The inner sidewall of the mixing gear ring is rotatably connected with the outer sidewall of the mixing pipe.

[0012] Preferably, the mixing gear ring is fixedly connected with the three mixing boxes through a mixing collar. Connecting holes for feeding the mixing boxes are formed in the mixing pipe. An acid solution, a collector and a foaming agent are respectively contained in the three mixing boxes.

[0013] Preferably, the adjusting assembly is composed of an electric control sliding groove and an adjusting rod. The electric control sliding groove is fixedly connected with the pressurized flat pipe. An adjusting plate is slidably connected to the electric control sliding groove through the adjusting rod. The adjusting plate is fixedly connected with the ends of the plurality of feeding hoses.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the settings of the screening cylinder and the recheck component, this solution can precipitate iron ions in the slurry by pH adjustment, use the centrifugal force generated by the rotation of the screening cylinder to initially screen out iron ions in the slurry, and then use the liquid flow to drive the impeller component to rotate, dispersing and filtering out the residual magnesium carbonate in the iron-containing impurities, facilitating the screening out of a large amount of iron ions before flotation, and making the subsequent flotation effect of magnesite better.

[0015] 2. Through the settings of the gear component and the mixing collar, this solution can drive three mixing boxes to rotate by the mixing collar, uniformly add various materials during the flow of the slurry, optimize the mixing structure, and avoid the generation of a large amount of foam during stirring, resulting in the loss of magnesium.

[0016] 3. Through the settings of the adjustment component and the adjustment plate, this solution can use the reciprocating movement of the adjustment plate to make the slurry falling point range sprayed by the feeding hose in the flotation cell wide and the fluidity strong, avoiding the accumulation caused by the fixed falling point of the slurry, and making the subsequent flotation more efficient. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention; Figure 2 is an assembly drawing of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention; Figure 3 is Figure 2 the enlarged view of part A in Figure 4 is a cross-sectional view of the casing of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention; Figure 5 is a structural schematic diagram of the screening component of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention; Figure 6 is a structural schematic diagram of the recheck component of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention; Figure 7 is a structural schematic diagram of the gear component of a self-cleaning feeding device for enhanced flotation of magnesite ore proposed by the present invention.

[0018] In the figure: 1, feeding frame; 2, mixing pipe; 3, base; 4, blanking hopper; 5, platform seat; 6, sleeve; 7, annular guide groove; 8, grille cover; 9, screening cylinder; 10, base; 11, electric control pin shaft; 12, semi-circular plate; 13, separation pipe; 14, material selection pipe; 15, sieve plate; 16, rotating shaft; 17, impeller part; 18, scraper; 19, mixing motor; 20, mixing gear; 21, mixing tooth ring; 22, mixing sleeve ring; 23, mixing box; 24, pressurized flat pipe; 25, feeding hose; 26, electric control chute; 27, adjusting rod; 28, adjusting plate; 29, electric control guide rail; 30, guiding seat. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example, referring to Figures 1 to 7 , a self-cleaning feeding device for enhanced flotation of magnesite ore, including a feeding frame 1 and a mixing pipe 2. The bottom end of the feeding frame 1 is fixedly connected with a blanking hopper 4. A screening cylinder 9 is arranged below the blanking hopper 4. A screening assembly is arranged outside the screening cylinder 9. A separation pipe 13 is arranged below the screening assembly. A material selection pipe 14 is arranged outside the separation pipe 13. A recheck assembly is arranged at the lower end of the separation pipe 13; Furthermore, the bottom end of the material placing frame 1 is fixedly connected to a base 3 through a plurality of support rods. The plurality of support rods are fixedly connected to a platform seat 5. The top end of the platform seat 5 is fixedly connected to a sleeve 6. The bottom end of the platform seat 5 is respectively fixedly connected to the top ends of a separation pipe 13 and a material selection pipe 14. The screening assembly is composed of an annular guide groove 7 and a grille cover 8. The bottom end of the annular guide groove 7 is rotatably connected to the top end of the grille cover 8. The bottom end of the grille cover 8 is rotatably connected to a base 10. The bottom end of the base 10 is fixedly connected to the top end of the platform seat 5. A plurality of sieve holes corresponding vertically to the grille cover 8 are formed in the screening cylinder 9. The sleeve 6 is fixedly connected to the annular guide groove 7 through a plurality of arc-shaped plates. The bottom end of the screening cylinder 9 is rotatably connected to the top end of the base 10. A through hole is formed in the bottom end of the base 10. The inner side wall of the through hole is fixedly connected to an electric control pin shaft 11. Two semi-circular plates 12 are rotatably connected to the outer side wall of the electric control pin shaft 11. Two electric control guide rails 29 are fixedly connected to the top end of the base 3. Two guide seats 30 are arranged on the electric control guide rails 29. The mixing pipe 2 is slidably connected to the electric control guide rails 29 through the outer guide seats 30. The material selection pipe 14 is fixedly connected to the electric control guide rails 29 through the inner guide seats 30. The recheck assembly is composed of an impeller member 17 and a plurality of scraping plates 18. A sieve plate 15 is assembled and connected to the lower end of the separation pipe 13. The end of the sieve plate 15 is rotatably connected to the impeller member 17 through a rotating shaft 16. The outer side wall of the rotating shaft 16 is fixedly connected to the plurality of scraping plates 18. The mixing pipe 2 is assembled and connected to the material selection pipe 14; It should be noted that: The crushed material of magnesite is added with water to form a slurry, and is put into the material placing frame 1 together with the sodium hydroxide solution. Then, the slurry with the sodium hydroxide solution enters the screening cylinder 9 through the feeding hopper 4. The iron ions in the magnesite slurry will polymerize into iron hydroxide solid precipitates after reacting with sodium hydroxide. The magnesium carbonate, which is the main component in magnesite, will be in a free state after being broken into fine particles. Subsequently, the screening cylinder 9 is controlled to rotate at a high speed on the base 10, so that the slurry in the screening cylinder 9 is subjected to centrifugal force during the rotation process, making the free magnesium carbonate particles move towards the edge with the slurry and approach the inner wall of the screening cylinder 9, while the iron hydroxide will be centrifuged to the bottom end. Subsequently, the grille cover 8 is controlled to rotate by an angle in the annular guide groove 7, so that the grille cover 8 is staggered from the sieve holes on the screening cylinder 9, making the slurry containing magnesium carbonate particles be centrifugally thrown out and enter the space between the separation pipe 13 and the material selection pipe 14, and a part of the slurry containing iron hydroxide will flow into the separation pipe 13 through the rotation of the semi-circular plates 12 on the electric control pin shaft 11 to realize the preliminary screening of iron ions. The above rotation control is electric control adjustment, which is the prior art and will not be elaborated too much; Subsequently, water is added to adjust the concentration of the slurry to ensure an appropriate concentration for subsequent flotation. The impeller member 17 in the lower end of the separation pipe 13 is impacted by the slurry and drives the rotating shaft 16 to rotate, dispersing the slurry, facilitating the passage of residual small particle magnesium carbonate particles through the sieve plate 15. The scraper 18 continuously rotates with the rotating shaft 16 to prevent iron hydroxide from clogging the sieve plate 15. After the feeding is completed, the sealing limit of the mixing pipe 2 and the material selection pipe 14 is released, and the material selection pipe 14 is separated from the mixing pipe 2 by sliding on the electric control guide rail 29 through the guide seat 30. Then, the sieve plate 15 is disassembled to clean the entire feeding mechanism for subsequent reuse; The benefits based on the above are as follows: In this way, the iron ions in the slurry can be solid-settled by pH adjustment, and the centrifugal force generated by the rotation of the screening cylinder 9 can initially screen out the iron ions in the slurry. Subsequently, the rotation of the impeller member 17 is driven by the liquid flow to disperse and filter out the residual magnesium carbonate in the iron-containing impurities, facilitating the screening out of a large amount of iron ions before flotation and making the subsequent flotation effect of magnesite better; A mixing motor 19 is fixedly connected to the outer side wall of the mixing pipe 2 through a mounting seat. The mixing motor 19 is connected to a mixing collar 22 through a gear assembly. Three mixing boxes 23 are connected to the outer side wall of the mixing collar 22; Furthermore, the gear assembly consists of a mixing gear 20 and a mixing gear ring 21. The mixing motor 19 is fixedly connected to the mixing gear 20 through a drive shaft. The mixing gear 20 meshes with the mixing gear ring 21. The inner side wall of the mixing gear ring 21 is rotatably connected to the outer side wall of the mixing pipe 2. The mixing gear ring 21 is fixedly connected to the three mixing boxes 23 through the mixing collar 22. Connecting holes for feeding the mixing boxes 23 are provided on the mixing pipe 2. An acid solution, a collector, and a foaming agent are respectively contained in the three mixing boxes 23; It should be noted that when the slurry containing magnesium carbonate continuously flows to the mixing pipe 2, the mixing motor 19 is started to drive the mixing gear 20 to rotate, thereby driving the engaged mixing gear ring 21 to rotate. The rotation of the mixing gear ring 21 drives the three mixing boxes 23 to rotate synchronously through the mixing collar 22, causing the three mixing boxes 23 to sequentially dock with the connecting holes on the mixing pipe 2, enabling the acid solution, the collector, and the foaming agent in the three mixing boxes 23 to be mixed with the flowing slurry for pH adjustment and polymerization foaming, avoiding excessive stirring from generating a large amount of foam, and the pressurization of the pressure flat pipe 24 can further reduce the foam generated during the conveying process; The benefits based on the above are as follows: In this way, the mixing collar 22 can be used to drive the three mixing boxes 23 to rotate, uniformly adding various materials during the flow of the slurry, optimizing the mixing structure, and avoiding the generation of a large amount of foam by stirring, resulting in the loss of magnesium; A pressure flat pipe 24 is fixedly connected to the outer end of the mixing pipe 2. A plurality of feeding hoses 25 are fixedly connected to the end of the pressure flat pipe 24. Adjusting components for adjusting the feeding hoses 25 are provided on both sides of the pressure flat pipe 24; Further, the adjustment component is composed of an electric control chute 26 and an adjustment rod 27. The electric control chute 26 is fixedly connected to the pressurized flat tube 24. The electric control chute 26 is slidably connected with an adjustment plate 28 through the adjustment rod 27. The adjustment plate 28 is fixedly connected to the ends of a plurality of feeding hoses 25. It should be noted that: after the magnesite slurry is added to the feeding hose 25, it will continuously spray out. During this process, by controlling the adjustment rod 27 to reciprocate up and down in the electric control chute 26, the adjustment rod 27 will drive the adjustment plate 28 to perform synchronous reciprocating up and down movements. As a result, the path of the slurry sprayed out by the plurality of feeding hoses 25 will change in a wave-like manner, making the landing range of the slurry wider and the fluidity stronger after entering the flotation cell. Based on the above advantages: by using the reciprocating up and down movement of the adjustment plate 28, the landing range of the slurry sprayed by the feeding hose 25 in the flotation cell is wide and the fluidity is strong, avoiding the accumulation caused by the fixed landing point of the slurry, and making the subsequent flotation more efficient. When the present invention is in use, the crushed magnesite is mixed with water to form a slurry, and is put into the material placing frame 1 together with the sodium hydroxide solution. Then, the slurry with the sodium hydroxide solution enters the screening cylinder 9 through the feeding hopper 4. The iron ions in the magnesite slurry will polymerize into iron hydroxide solid precipitates after reacting with sodium hydroxide, while the main component magnesium carbonate in the magnesite will be in a free state after being broken into fine particles. Subsequently, the screening cylinder 9 is controlled to rotate at a high speed on the base 10, so that the slurry in the screening cylinder 9 is subjected to centrifugal force during rotation, making the free magnesium carbonate particles move towards the edge with the slurry and approach the inner wall of the screening cylinder 9, while the iron hydroxide will be centrifuged to the bottom. Subsequently, the grille cover 8 is controlled to rotate an angle in the annular guide groove 7, so that the grille cover 8 is staggered from the screen holes on the screening cylinder 9, and the slurry containing magnesium carbonate particles is centrifugally thrown out and enters the space between the separation tube 13 and the material selection tube 14, while a part of the slurry containing iron hydroxide will flow into the separation tube 13 through the semi-circular plate 12 rotating and opening on the electric control pin shaft 11, realizing the preliminary screening of iron ions. The above rotation control is electric control adjustment, which is the prior art and will not be elaborated too much. Subsequently, water is added to adjust the concentration of the slurry to ensure an appropriate concentration for subsequent flotation. The impeller member 17 in the lower end of the separation pipe 13 is impacted by the slurry and drives the rotation of the rotating shaft 16, causing the slurry to be dispersed, facilitating the passage of residual small particle magnesium carbonate particles through the sieve plate 15. The scraper 18 continuously rotates with the rotating shaft 16 to prevent the blockage of iron hydroxide on the sieve plate 15. After the feeding is completed, the sealing limit of the mixing pipe 2 and the material selection pipe 14 is released, and the material selection pipe 14 is separated from the mixing pipe 2 by sliding on the electric control guide rail 29 through the guide seat 30. Then, the sieve plate 15 is disassembled to clean the entire feeding mechanism for subsequent reuse. In this way, the iron ions in the slurry can be solid-settled by pH adjustment, the centrifugal force generated by the rotation of the screening cylinder 9 can initially screen out the iron ions in the slurry, and the rotation of the impeller member 17 can be driven by the liquid flow in the subsequent process to disperse and filter out the residual magnesium carbonate in the iron-containing impurities, facilitating the screening out of a large amount of iron ions before flotation, making the subsequent flotation effect of magnesite better; When the slurry containing magnesium carbonate continuously flows to the mixing pipe 2, the mixing motor 19 is started to drive the rotation of the mixing gear 20, and then drives the rotation of the engaged mixing gear ring 21. The rotation of the mixing gear ring 21 drives the synchronous rotation of the three mixing boxes 23 through the mixing sleeve ring 22, so that the three mixing boxes 23 are sequentially docked with the connection holes on the mixing pipe 2, enabling the acid solution, collector, and foaming agent in the three mixing boxes 23 to be mixed with the flowing slurry for pH adjustment and polymerization foaming. Excessive stirring is avoided to prevent the generation of a large amount of foam, and the pressurization of the pressure flat pipe 24 can further reduce the foam generated during the transportation process. In this way, the mixing sleeve ring 22 can be used to drive the rotation of the three mixing boxes 23, and various materials can be evenly added during the flow of the slurry, optimizing the mixing structure and avoiding the generation of a large amount of foam caused by stirring, resulting in the loss of magnesium; After the magnesite slurry is added to the feeding hose 25, it will continuously spray out. During this process, the control adjustment rod 27 slides up and down reciprocally in the electric control chute 26, and the adjustment rod 27 will drive the adjustment plate 28 to perform synchronous up and down reciprocating movements. As a result, the spraying paths of the slurry ejected from the multiple feeding hoses 25 change in a wave-like manner, making the landing range of the slurry in the flotation cell wider and the fluidity stronger. In this way, the up and down reciprocating movement of the adjustment plate 28 can be used to make the landing range of the slurry sprayed by the feeding hose 25 in the flotation cell wide and the fluidity strong, avoiding the accumulation caused by the fixed landing point of the slurry and making the subsequent flotation more efficient.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A self-cleaning feeding device for enhanced flotation of magnesite ore, comprising a feeding frame (1) and a mixing pipe (2), characterized in that: The bottom end of the material placing frame (1) is fixedly connected to a lower hopper (4), a screening cylinder (9) is arranged below the lower hopper (4), a screening assembly is arranged outside the screening cylinder (9), a separation tube (13) is arranged below the screening assembly, a material selection tube (14) is arranged outside the separation tube (13), and a reselection assembly is arranged at the lower end of the separation tube (13); The outer wall of the mixing tube (2) is fixedly connected to a mixing motor (19) via a mounting seat, the mixing motor (19) is connected to a mixing collar (22) via a gear assembly, the outer wall of the mixing collar (22) is connected to three mixing boxes (23), the outer end of the mixing tube (2) is fixedly connected to a pressurized flat tube (24), the end of the pressurized flat tube (24) is fixedly connected to a plurality of feeding hoses (25), and adjustment assemblies for adjusting the feeding hoses (25) are provided on both sides of the pressurized flat tube (24).

2. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 1, characterized in that: The bottom end of the material placement frame (1) is fixedly connected to a base (3) via a plurality of support rods, the plurality of support rods are fixedly connected to a platform seat (5), the top end of the platform seat (5) is fixedly connected to a sleeve (6), and the bottom end of the platform seat (5) is respectively fixedly connected to the top ends of a separation tube (13) and a material selection tube (14).

3. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 2, characterized in that: The screening assembly is composed of an annular guide groove (7) and a grille cover (8); the bottom end of the annular guide groove (7) is rotatably connected to the top end of the grille cover (8); the bottom end of the grille cover (8) is rotatably connected to a base (10); the bottom end of the base (10) is fixedly connected to the top end of the platform seat (5); a plurality of sieve holes corresponding to the grille cover (8) in a vertical direction are formed on the screening cylinder (9); and the sleeve (6) is fixedly connected to the annular guide groove (7) via a plurality of arc-shaped plates.

4. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 3, characterized in that: The bottom end of the screening cylinder (9) is rotatably connected to the top end of the base (10); a through hole is provided at the bottom end of the base (10); an electric control pin shaft (11) is fixedly connected to the inner side wall of the through hole; and two semicircular plates (12) are rotatably connected to the outer side wall of the electric control pin shaft (11).

5. The self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 2, characterized in that: Two electric control rails (29) are fixedly connected to the top of the base (3), and two guide seats (30) are arranged on the electric control rails (29). The mixing tube (2) is slidably connected to the electric control rails (29) via the outer guide seats (30), and the material selection tube (14) is fixedly connected to the electric control rails (29) via the inner guide seats (30).

6. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 1, characterized in that: The reselection assembly is composed of an impeller (17) and a plurality of scrapers (18); a sieve plate (15) is assembled and connected to the lower end of the separation tube (13); the end of the sieve plate (15) is rotatably connected to the impeller (17) via a rotating shaft (16); the outer wall of the rotating shaft (16) is fixedly connected to the plurality of scrapers (18); and the mixing tube (2) is assembled and connected to the material selection tube (14).

7. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 1, characterized in that: The gear assembly consists of a mixing gear (20) and a mixing gear ring (21); the mixing motor (19) is fixedly connected to the mixing gear (20) via a drive shaft; the mixing gear (20) is meshed with the mixing gear ring (21); and the inner wall of the mixing gear ring (21) is rotatably connected to the outer wall of the mixing tube (2).

8. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 7, characterized in that: The mixing gear ring (21) is fixedly connected to three mixing boxes (23) via a mixing sleeve (22); a connecting hole for feeding materials into the mixing boxes (23) is provided on the mixing pipe (2); and the three mixing boxes (23) are respectively filled with an acid solution, a collector and a foaming agent.

9. A self-cleaning feeding device for enhanced flotation of magnesite ore according to claim 1, characterized in that: The adjustment assembly is composed of an electrically controlled slide groove (26) and an adjustment rod (27); the electrically controlled slide groove (26) is fixedly connected to the pressurized flat tube (24); the electrically controlled slide groove (26) is slidably connected to an adjustment plate (28) via the adjustment rod (27); and the adjustment plate (28) is fixedly connected to the ends of a plurality of feeding hoses (25).

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