Large-flow ore pulp bubble manufacturing device and flotation machine

Abstract

The utility model relates to the technical field of mineral flotation, in particular to a large-flow ore pulp bubble manufacturing device and a flotation machine. Comprising a spiral air injection device and an air inlet pipe, the air inlet pipe is communicated with the top of the spiral air injection device, the bottom of the spiral air injection device is communicated with a plurality of direct injection pipes, and the direct injection pipes are located at the bottom of the spiral air injection device and arranged in the horizontal direction. By means of the structure, deposition of mineral powder at the bottom of the flotation machine can be reduced, when the mineral powder is deposited at the bottom of the flotation machine, high-pressure air sprayed out of the direct spraying pipe can blow the mineral powder deposited at the bottom of the flotation machine again, and therefore the flotation efficiency is improved; in addition, the content of air in the ore pulp can be increased through high-pressure air sprayed out of the direct spraying pipe, and the flotation efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of mineral flotation technology, specifically to a high-flow-rate slurry bubble generation device and flotation machine. Background Technology

[0002] After ore mining, different minerals need to be screened, which requires the use of flotation machines. The main principle of flotation machines is to utilize the differences in the surface properties of minerals and use the buoyancy of air bubbles to carry out minerals with poor hydrophilicity.

[0003] In existing technologies, the spiral jet device of a flotation machine mainly consists of an impeller and an air inlet pipe. The rotation of the impeller draws air in through the air inlet pipe, where it mixes with reagents in the slurry to generate bubbles. When the flotation machine operates for extended periods, the centrifugal force of the impeller and the gravity of the mineral powder itself can cause mineral powder to accumulate around the bottom of the flotation tank, leading to reduced flotation efficiency and poor flotation results. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a high-flow-rate slurry bubble generation device and flotation machine to solve the problem in the prior art where mineral powder easily accumulates around the bottom of the flotation box, resulting in low flotation efficiency and poor flotation effect.

[0005] This utility model is achieved using the following technical solution: a high-flow-rate mineral slurry bubble manufacturing device, including a spiral jet device and an air inlet pipe, the air inlet pipe being connected to the top of the spiral jet device, and a plurality of direct injection pipes being connected to the bottom of the spiral jet device, the direct injection pipes being located at the bottom of the spiral jet device, and the plurality of direct injection pipes being arranged in a horizontal direction.

[0006] The above structure reduces the deposition of mineral powder at the bottom of the flotation machine. When mineral powder is deposited at the bottom of the flotation machine, the high-pressure air sprayed through the direct injection pipe will blow the deposited mineral powder back up, thereby improving the flotation efficiency. In addition, the high-pressure air sprayed through the direct injection pipe can also increase the air content in the pulp, further improving the flotation efficiency.

[0007] Preferably, the spiral jet device includes a branch pipe connected to the air inlet pipe at the top. Several horizontally arranged first nozzles are fixedly connected and communicated with the branch pipe. The first nozzles are L-shaped and arranged in a circumferential array on the branch pipe, with their nozzles facing horizontally. The L-shaped and circumferentially arranged first nozzles allow the first nozzles to not only introduce a large amount of air into the slurry but also guide the slurry to rotate, thereby accelerating bubble generation and the adhesion of minerals to the bubbles.

[0008] Preferably, the bottom of the first nozzle is further provided with several horizontally arranged and circumferentially arrayed second nozzles. The second nozzles are fixedly connected to and communicate with the branch pipe. The structure of the second nozzles is the same as that of the first nozzle, but the nozzle direction is opposite. By setting the second nozzles in the opposite direction to the first nozzle, the stress generated by the first nozzle is offset, thereby increasing the stability of the device.

[0009] Preferably, the direct injection pipe is fixedly connected to and communicates with the bottom of the branch pipe, and there are four direct injection pipes arranged in a circumferential array on the branch pipe. The circumferential array of the direct injection pipes allows them to blow air to the four sides of the bottom of the flotation machine, resulting in a wider coverage area.

[0010] Preferably, the branch pipe has multiple branches. The outlet end of the air inlet pipe is fixedly connected to and communicates with the main pipe. The main pipe is fixedly connected to and communicates with several connecting pipes. The connecting pipes are arranged in parallel. The end of the connecting pipe away from the main pipe is fixedly connected to and communicates with the top of the branch pipe. By setting multiple branch pipes, the amount of air introduced into the slurry is increased, further accelerating the flotation efficiency.

[0011] A flotation machine using a high-flow-rate slurry bubble generation device includes a flotation box, a froth box fixedly installed on the front side of the flotation box, a spiral jet device and a direct injection pipe fixedly installed inside the flotation box, the direct injection pipe being located at the bottom of the flotation box, and a froth scraping mechanism for pushing froth into a froth scraping box being provided on the top of the flotation box.

[0012] The above structure allows the mineral powder deposited at the bottom of the flotation tank to be blown up in a timely manner, thus making the flotation more complete and improving the flotation efficiency.

[0013] Preferably, the skimming mechanism includes an active rotating shaft rotatably mounted on the front top of the flotation tank and driven to rotate by a drive mechanism, and a driven rotating shaft rotatably mounted on the rear top of the flotation tank. A first active rotating roller is coaxially fixedly mounted on the active rotating shaft, and a first driven rotating roller is coaxially fixedly mounted on the driven rotating shaft. The first active rotating roller and the second driven rotating roller are connected by a first transmission belt, and a plurality of first scrapers are fixedly mounted on the first transmission belt. The arrangement of the first transmission belt and the first scrapers allows the first scrapers to push the froth towards the froth tank from back to front, resulting in higher skimming efficiency and effectively addressing the large number of bubbles generated by the bubble generating mechanism.

[0014] Preferably, two second driving rollers and two second driven rollers are respectively provided at the left and right ends of the first driving roller and the first driven roller. The second driving rollers are coaxially and fixedly connected to the driving shaft, and the second driven rollers are coaxially and fixedly connected to the driven shaft. The second driving rollers and the second driven rollers on the same side are connected by a second transmission belt, and a plurality of evenly spaced second scrapers are fixedly installed on the second transmission belt. By setting the second scrapers, the working range of the foam scraping mechanism is widened, further improving the foam scraping efficiency of the foam scraping mechanism.

[0015] Preferably, the first scraper and the second scraper are interleaved in the front-to-back direction. By interleaving the first scraper and the second scraper, the second scraper can continue to push the foam flowing out from both ends of the previous first scraper forward, and the first scraper can also continue to push the foam flowing out from the inner side of the previous second scraper forward, thereby improving the utilization rate of the first scraper and the second scraper.

[0016] Preferably, the drive mechanism includes a motor fixedly mounted on the top of the flotation tank. A drive pulley is coaxially and fixedly connected to the motor's output end. The drive pulley is connected to a driven pulley via a belt drive, and the driven pulley is coaxially and fixedly connected to the drive shaft. The transmission between the drive and driven pulleys allows for more diverse motor mounting positions, increasing the versatility of the drive mechanism's installation location.

[0017] In summary, the beneficial effects of this utility model are as follows:

[0018] 1. By spraying air through the direct injection pipe, the mineral powder deposited at the bottom of the flotation tank can be blown up again, allowing it to re-enter the slurry and adhere to the air bubbles, thus making the flotation more thorough. While blowing up the mineral powder, the direct injection pipe also introduces a large amount of air into the slurry, thereby accelerating the generation of air bubbles and further improving the flotation efficiency.

[0019] 2. By setting up several first and second scrapers, the efficiency of removing foam from the top of the slurry is accelerated, thereby addressing the situation where the spiral jet device in this unit can generate a large number of bubbles that adhere quickly, and avoiding the problem of excessive foam accumulation at the top of the slurry leading to a decrease in flotation efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the high-flow-rate mineral slurry bubble manufacturing device of this utility model;

[0021] Figure 2 A schematic diagram showing the connection structure between multiple bubble manufacturing devices and a blower;

[0022] Figure 3 This is a schematic diagram of the overall structure of the flotation machine of this utility model;

[0023] Figure 4 for Figure 3 A structural diagram from a second perspective;

[0024] Figure 5 This is a schematic diagram of the internal structure of a flotation tank;

[0025] Figure 6 This is a schematic diagram of the foam scraping mechanism.

[0026] In the diagram: 1-Branch pipe; 2-First nozzle; 3-Second nozzle; 4-Direct nozzle; 5-Connecting pipe; 6-Main pipe; 7-Air inlet pipe; 8-Blower; 9-Support plate; 10-Support component; 11-Flotation box; 12-Motor; 13-Belt; 14-Foam scraping mechanism; 15-Foam box; 16-Drive pulley; 17-Driven pulley; 18-Driven shaft; 19-Driven shaft; 20-First drive roller; 21-First driven roller; 22-Second drive roller; 23-Second driven roller; 24-First transmission belt; 25-Second transmission belt; 26-First scraper; 27-Second scraper. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0030] like Figure 1 , Figure 2 As shown, this utility model provides a high-flow-rate slurry bubble manufacturing device, including a spiral jet device and an air inlet pipe 7. One end of the air inlet pipe 7 is fixedly connected and communicates with the air outlet of a blower 8, and the other end of the air inlet pipe 7 is fixedly connected and communicates with the top end of the spiral jet device. In this embodiment, the blower 8 is an air-suspended blower. Several direct injection pipes 4 are connected to the bottom of the spiral jet device, and the direct injection pipes 4 are located at the bottom of the spiral jet device and are arranged horizontally.

[0031] The spiral jet device described in this application can be any mechanism capable of generating bubbles, such as an impeller. The impeller draws air in through an air duct, causing bubbles to form in the slurry. Driven by the impeller, the slurry rotates and flows, accelerating the adhesion of poorly hydrophilic mineral powder to the bubbles. In this embodiment, the spiral jet device includes a branch pipe 1 connected to the air inlet pipe 7 at its top. Several horizontally arranged first nozzles 2 are fixedly connected and communicated on the branch pipe 1. The first nozzles 2 are L-shaped and arranged in a circumferential array on the branch pipe 1, with their nozzles facing horizontally. Through the first nozzles 2, a large amount of high-pressure gas is generated under the action of the blower 8, increasing the air content introduced into the slurry, improving the efficiency of bubble generation, and also causing the slurry to rotate and flow, further improving the flotation efficiency.

[0032] Because high-pressure gas is ejected from the first nozzle 2, the stress on the branch pipe 1 is relatively large, making the connection of the branch pipe 1 prone to breakage. To counteract this stress, several horizontally arranged and circumferentially arrayed second nozzles 3 are provided at the bottom of the first nozzle 2. The second nozzles 3 are fixedly connected to and communicate with the branch pipe 1. The structure of the second nozzles 3 is the same as that of the first nozzle 2, but the nozzle direction is opposite. This allows the stress generated by the first nozzle 2 to be offset, further improving the stability of the device and increasing its service life.

[0033] As a further illustration of this example, the direct injection pipe 4 is fixedly connected and communicates with the bottom of the branch pipe 1. There are four direct injection pipes 4, which are distributed in a circumferential array on the branch pipe 1. Through the circumferential array distribution of the direct injection pipes 4, the direct injection pipes 4 can blow air to all sides of the bottom of the flotation machine, thus covering a wider area.

[0034] In this embodiment, multiple branch pipes 1 can be configured. The end of the air inlet pipe 7 furthest from the blower 8 is fixedly connected to and communicates with the main pipe 6. The main pipe 6 is fixedly connected to and communicates with several connecting pipes 5, which are arranged in parallel. The end of the connecting pipe 5 furthest from the main pipe 6 is fixedly connected to and communicates with the top of the branch pipe 1. The multiple branch pipes 1 correspond to multiple sets of spiral jet devices. By using multiple sets of spiral jet devices, the air content in the slurry is increased, further improving the efficiency of slurry flotation.

[0035] like Figures 3 to 6As shown, this utility model also provides a flotation machine using the above-mentioned high-flow-rate slurry bubble manufacturing device, including a flotation box 11, with a froth box 15 fixedly installed on the front side of the flotation box 11. The froth box 15 is existing technology and is mainly used to hold the froth scraped off from the flotation box 11, allowing the froth to enter the next process along the froth box 15. Since this is conventional existing technology, it will not be described in detail here. A blower 8 can be located behind the flotation box 11. A support plate 9 is fixedly installed on the rear side of the flotation box 11. A main pipe 6 is fixedly installed on the support plate 9 by several support members 10. The front end of a connecting pipe 5 extends through the rear wall of the flotation box 11 to the inside of the flotation box 11. A branch pipe 1, a first spray pipe 2, a second spray pipe 3, and a direct spray pipe 4 are all located inside the flotation box 11, with the direct spray pipe 4 located at the bottom of the flotation box 11. A froth scraping mechanism 14 for pushing the froth into the froth scraper box is also provided at the top of the flotation box 11.

[0036] The skimming mechanism 14 in this device can continue to be a transmission-type skimming mechanism 14. The traditional skimming mechanism 14 mainly consists of two parts: a rotating shaft and a scraper. The scraper rotates with the rotating shaft to remove the foam. During the use of this bubble generator, it was found that the traditional skimming mechanism 14, with the scraper rotating in the flotation box 11, has a slow skimming speed, which is not suitable for the large number of bubbles generated by this bubble generator. Furthermore, installing a rotating scraper only on the front side has two problems: first, when the scraper removes the foam, some of the foam runs to the left and right sides; second, when the scraper pushes the slurry forward and separates it from the slurry, due to the flow characteristics of the slurry, the slurry will generate a backward backflow. At this time, there is less foam returning to the slurry, and the foam on the rear side of the flotation box 11 flows to the front side slowly. The second scraper will push this part of the slurry forward again, resulting in low efficiency in foam removal and low utilization of the scraper. Therefore, we have improved the skimming machine to cope with the large amount of foam generated by the bubble generator.

[0037] In this embodiment, the skimming mechanism 14 includes an active rotating shaft 18 rotatably mounted on the front top of the flotation tank 11 and driven to rotate by a drive mechanism. A driven rotating shaft 19 is also rotatably mounted on the rear top of the flotation tank 11. A first active rotating roller 20 is coaxially fixedly mounted on the active rotating shaft 18, and a first driven rotating roller 21 is coaxially fixedly mounted on the driven rotating shaft 19. The first active rotating roller 20 and the second driven rotating roller 23 are connected by a first transmission belt 24, and a plurality of first scrapers 26 are fixedly mounted on the first transmission belt 24. Two second active rotating rollers 22 and two second driven rotating rollers 23 are respectively provided at the left and right ends of the first active rotating roller 20 and the first driven rotating roller 21. The second active rotating rollers 22 are coaxially fixedly connected to the active rotating shaft 18, and the second driven rotating rollers 23 are coaxially fixedly connected to the driven shaft 19. The second active rotating rollers 22 and the second driven rotating rollers 23 on the same side are connected by a second transmission belt 25, and a plurality of evenly spaced second scrapers 27 are fixedly mounted on the second transmission belt 25. The first scraper 26 and the second scraper 27 directly push the foam from the back to the front of the flotation box 11, covering a wider area and scraping the foam more efficiently. This allows the foam scraping mechanism 14 to better handle the large number of bubbles generated by the spiral jet device in this device and avoid the accumulation of foam.

[0038] As a further illustration of this example, the first scraper 26 and the second scraper 27 are interleaved in the front-to-back direction, and their specific structure is as follows: Figure 6 As shown, the alternating arrangement of the first scraper 26 and the second scraper 27 allows the second scraper 27 to continue pushing the slurry flowing from the left and right sides of the first scraper 26 forward, while the next first scraper 26 pushes the slurry flowing from the inside of the second scraper 27 forward. This alternation improves the efficiency of foam removal. Both the first scraper 26 and the second scraper 27 move from the rear of the slurry to the front, pushing a wider coverage area of ​​foam and increasing the utilization rate of the scrapers.

[0039] As a further illustration of this example, the driving mechanism described above can be any structure capable of driving the active rotating shaft 18 to rotate. In this embodiment, the driving mechanism includes a motor 12 fixedly mounted on the top of the flotation tank 11. The output end of the motor 12 is coaxially and fixedly connected to an active pulley 16. The active pulley 16 is driven by a driven pulley 17 via a belt 13. The driven pulley 17 is coaxially and fixedly connected to the active rotating shaft 18.

[0040] The operating principle of this device is as follows: When flotation is required, the slurry to be flotated is first introduced into the flotation tank 11. Then, the blower 8 and motor 12 are turned on. The blower 8 injects high-pressure air into the slurry from the first nozzle 2, the second nozzle 3, and the direct nozzle 4, thereby generating a large number of bubbles in the slurry. Driven by the first nozzle 2 and the second nozzle 3, the slurry also flows, thus accelerating the efficiency of mineral adhesion to bubbles. During the flotation process, some mineral powder, which sinks due to its own gravity, is blown back up by the high-pressure gas generated by the direct nozzle 4, thus preventing the mineral powder from settling. The minerals adhere to the bubbles and float upwards, forming froth at the top of the slurry. The froth is pushed to the froth box 15 by the froth scraper mechanism 14 for the next process.

[0041] In summary, the high-flow-rate slurry bubble generation device and flotation machine provided by this invention can re-blow up the mineral powder deposited at the bottom of the flotation tank 11 through the air jet from the direct injection pipe 4, allowing it to re-enter the slurry and adhere to the bubbles, thereby making the flotation more thorough. While blowing up the mineral powder, the direct injection pipe 4 also introduces a large amount of air into the slurry, thereby accelerating the generation of bubbles and further improving the flotation efficiency. The arrangement of several first scrapers 26 and second scrapers 27 accelerates the efficiency of removing foam from the top of the slurry, thus addressing the situation where the spiral jet device in this device can generate a large number of bubbles that adhere quickly, avoiding the problem of excessive foam accumulation at the top of the slurry leading to a decrease in flotation efficiency.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A high flow slurry bubble generator comprising a spiral air jet, characterised in that, It also includes an air intake pipe (7), which is connected to the top of the spiral jet device. The bottom of the spiral jet device is connected to several direct injection pipes (4), which are located at the bottom of the spiral jet device and are arranged in a horizontal direction.

2. The high-flow ore pulp bubble production device according to claim 1, characterized by, The spiral jet device includes a branch pipe (1) connected to the top of the air intake pipe (7). Several horizontally arranged first nozzles (2) are fixedly connected and connected to the branch pipe (1). The first nozzles (2) are "L" shaped. The several first nozzles (2) are arranged in a circular array on the branch pipe (1). The nozzles of the several first nozzles (2) face the horizontal direction.

3. The high-flow ore pulp bubble production device according to claim 2, characterized by, The bottom of the first nozzle (2) is also provided with several horizontally arranged and circumferentially arrayed second nozzles (3). The second nozzles (3) are fixedly connected and communicate with the branch pipe (1). The structure of the second nozzles (3) is the same as that of the first nozzle (2), but the nozzle direction is opposite.

4. The high-flow-rate slurry bubble generation device according to claim 2, characterized in that, The direct injection pipe (4) is fixedly connected to and communicates with the bottom of the branch pipe (1). There are four direct injection pipes (4) arranged in a circular array on the branch pipe (1).

5. The high-flow ore pulp bubble production device according to claim 3, characterized by, The branch pipe (1) is provided with multiple pipes. The outlet end of the air inlet pipe (7) is fixedly connected to and connected to the main pipe (6). The main pipe (6) is fixedly connected to and connected to several connecting pipes (5). The several connecting pipes (5) are arranged in parallel. The end of the connecting pipe (5) away from the main pipe (6) is fixedly connected to and connected to the top of the branch pipe (1).

6. A flotation machine using the large-flow ore pulp bubble manufacturing device according to any one of claims 1 to 5, comprising a flotation tank (11), a froth tank (15) is fixedly installed on the front side of the flotation tank (11), characterized in that, The spiral jet device and the direct injection pipe (4) are both fixedly installed inside the flotation tank (11). The direct injection pipe (4) is located at the bottom of the flotation tank (11). The top of the flotation tank (11) is provided with a skimming mechanism (14) for pushing the foam into the skimming box.

7. The flotation machine of claim 6, characterized in that The skimming mechanism (14) includes an active rotating shaft (18) rotatably mounted on the front side of the top of the flotation tank (11) and driven to rotate by a driving mechanism. A driven rotating shaft (19) is also rotatably mounted on the rear side of the top of the flotation tank (11). A first active rotating roller (20) is coaxially fixedly mounted on the active rotating shaft (18), and a first driven rotating roller (21) is coaxially fixedly mounted on the driven rotating shaft (19). The first active rotating roller (20) and the second driven rotating roller (23) are connected by a first transmission belt (24). A plurality of first scrapers (26) are fixedly mounted on the first transmission belt (24).

8. The flotation machine of claim 7, characterized in that Two second active rollers (22) and two second passive rollers (23) are respectively provided at the left and right ends of the first active roller (20) and the first passive roller (21). The second active roller (22) is coaxially fixedly connected to the active rotating shaft (18), and the second passive roller (23) is coaxially fixedly connected to the passive rotating shaft (19). The second active roller (22) and the second passive roller (23) on the same side are connected by a second transmission belt (25). Several second scrapers (27) are fixedly installed on the second transmission belt (25) at uniform intervals.

9. The flotation machine of claim 8, characterized in that The first scraper (26) and the second scraper (27) are interspersed in the front-to-back direction.

10. The flotation machine of claim 7, characterized in that The drive mechanism includes a motor (12) fixedly installed on the top of the flotation tank (11). The output end of the motor (12) is coaxially fixedly connected to a drive pulley (16). The drive pulley (16) is driven by a driven pulley (17) through a belt (13). The driven pulley (17) is coaxially fixedly connected to the drive shaft (18).

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