Ore pulp bubble generating device and flotation machine

Abstract

The utility model relates to the technical field of mineral flotation, in particular to an ore pulp bubble generating device and a flotation machine. Comprising an air inlet pipe, one end of an air outlet of the air inlet pipe communicates with a branch pipe, and a plurality of first spray pipes communicating with the branch pipe are fixedly installed on the side wall of the branch pipe. Through the structure, high-pressure gas is directly introduced into ore pulp, so that the air content in the ore pulp is increased, then the ore pulp flows under the pushing of the high-pressure gas, the attachment of the ore pulp and bubbles is increased, the generation efficiency of the bubbles is improved, the attachment of the ore pulp and the bubbles is accelerated, the flotation efficiency is improved, and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mineral flotation technical field, concretely relates to a kind of ore pulp bubble generating device and flotation machine. BACKGROUND

[0002] Different minerals need to be screened after ore exploitation, and a flotation machine needs to be used. The main principle of the flotation machine is to use the difference in the surface properties of minerals to bring out the minerals with poor hydrophilicity through the buoyancy of bubbles.

[0003] In the prior art, the bubble generating device for generating bubbles mainly consists of an impeller. An air passage for air to enter is provided in the middle of the impeller. With the rotation of the impeller, air enters the ore pulp along the air passage and generates bubbles near the impeller. The above-mentioned way generates bubbles for flotation, and the efficiency of bubble generation is low, and the power consumption is high. SUMMARY

[0004] To solve the problem of low bubble generation efficiency and high power consumption in the prior art, the utility model provides an ore pulp bubble generating device and a flotation machine.

[0005] The utility model is implemented by using the following technical scheme: an ore pulp bubble generating device includes an air inlet pipe. A branch pipe is connected to one end of the air outlet of the air inlet pipe. A plurality of first nozzles are fixedly installed on the side wall of the branch pipe and are in communication with the branch pipe. The first nozzles are arranged in a horizontal direction and are distributed in a circumferential array on the branch pipe. The nozzles of the first nozzles face the clockwise or counterclockwise direction.

[0006] Through the above structure, high-pressure gas is directly introduced into the ore pulp, thereby increasing the air content in the ore pulp. Under the push of the high-pressure gas, the ore pulp flows, thereby increasing the adhesion of the ore pulp and the bubbles. This improves the generation efficiency of the bubbles, speeds up the adhesion of the ore pulp and the bubbles, improves the efficiency of flotation, and reduces energy consumption.

[0007] Preferably, the first nozzles are in the shape of "L". The arrangement of the "L"-shaped first nozzles enables the device to introduce a large amount of air into the ore pulp while also causing the ore pulp to flow in a rotating manner, thereby completely replacing the impeller, increasing the air intake, and further improving the efficiency of ore pulp flotation.

[0008] Preferably, a plurality of second nozzles are also fixedly installed on the side wall of the branch pipe and are in communication with the branch pipe. The second nozzles are located below the first nozzles. The second nozzles have the same structure as the first nozzles, and the direction of the nozzles of the second nozzles is opposite to that of the first nozzles. The arrangement of the second nozzles in the opposite direction to the first nozzles offsets the stress generated when the first nozzles spray high-pressure gas, making the structure of the device simpler.

[0009] Preferably, the branch pipe, the first nozzle and the second nozzle are provided with multiple groups, one end of an air outlet of the air inlet pipe is fixedly connected and communicated with a main pipe, a plurality of parallelly arranged connecting pipes are fixedly connected and communicated with the main pipe, and the connecting pipes are fixedly connected and communicated with the top of the branch pipe at the end away from the main pipe. By arranging multiple groups of the branch pipe, the first nozzle and the second nozzle, the amount of air entering the ore pulp is further increased, the generation of air bubbles is further accelerated, and the efficiency of flotation is improved.

[0010] A flotation machine using an ore pulp air bubble generating device comprises a flotation tank, the branch pipe and the first nozzle are fixedly installed in the interior of the flotation tank, and a scum scraping mechanism for scraping the scum floating on the top of the ore pulp is further installed on the top of the interior of the flotation tank.

[0011] By the above structure, a large amount of air bubbles can be generated in the flotation machine, thereby accelerating the efficiency of ore pulp flotation.

[0012] Preferably, the scum scraping mechanism comprises a first rotating shaft rotatably installed on the flotation tank and rotatable by a driving mechanism, the first rotating shaft is located on the front side of the flotation tank, a second rotating shaft is further rotatably installed on the rear side of the flotation tank, a fourth rotating roller is fixedly installed on the first rotating shaft, a third rotating roller is fixedly installed on the second rotating shaft, a second installation belt is installed on the fourth rotating roller and the third rotating roller, the fourth rotating roller and the third rotating roller are drivingly connected through the second installation belt, and a plurality of second scraping plates for scraping the scum are fixedly installed on the second installation belt. By the above structure, a single second scraping plate can push the scum from the rear to the front, instead of scraping only at the front side, and the plurality of second scraping plates accelerate the process of separating the scum from the ore pulp, thereby coping with the situation that a large amount of scum can be generated by the device.

[0013] Preferably, first rotating rollers are arranged on the left and right sides of the fourth rotating roller, second rotating rollers are arranged on the left and right sides of the third rotating roller, the first rotating rollers are coaxially fixedly connected with the first rotating shaft, the second rotating rollers are coaxially fixedly connected with the second rotating shaft, first installation belts are installed on the first rotating rollers and the second rotating rollers on the same side, the first rotating rollers and the second rotating rollers are drivingly connected through the first installation belts, and a plurality of first scraping plates are installed on the first installation belts. By arranging the first scraping plates, the omission of the scum on the two sides can be reduced.

[0014] Preferably, the first scraping plates are equidistantly arranged on the first installation belt, the second scraping plates are equidistantly arranged on the second installation belt, and the first scraping plates and the second scraping plates are alternately arranged in the front-rear direction. By alternately arranging the first scraping plates and the second scraping plates, the first scraping plates can further push the scum running out from the two sides of the second scraping plates forward, and the next second scraping plate can push the scum running out from the interior of the first scraping plate forward, the first scraping plates and the second scraping plates are alternately arranged, and the efficiency of scraping the scum is improved.

[0015] Preferably, the driving mechanism comprises a motor fixedly installed on the top of the flotation tank, an output end of the motor is fixedly connected with a driving pulley, the driving pulley is connected with a driven pulley through a belt transmission, and the driven pulley is coaxially fixedly connected with the first rotating shaft.

[0016] Preferably, the front side of the flotation tank is also fixedly installed with a froth tank for containing froth, and the top of the rear side of the froth tank is communicated with the top of the front side of the flotation tank. Through the setting of the froth tank, the scraped froth can enter the next process along the froth tank, thereby preventing the froth from running around.

[0017] In summary, the beneficial effects of the present application are:

[0018] 1. Through the setting of the first spray pipe, high-pressure air can be directly introduced into the ore pulp during flotation, thereby accelerating the generation speed of air bubbles. The first spray pipe is arranged in an "L" shape and a circumferential array, so that the first spray pipe can not only introduce a large amount of air into the ore pulp, but also make the ore pulp flow, thereby improving the air bubble generation efficiency and promoting the attachment of air bubbles and ore pulp, thereby improving the flotation efficiency and saving energy consumption.

[0019] 2. Through the setting of the plurality of first and second scrapers, the efficiency of scraping froth on the top of the ore pulp is accelerated, so as to cope with the situation that the air bubble generating device in the device can generate a large number of air bubbles and attach quickly, thereby avoiding the problem that the accumulation of too much froth on the top of the ore pulp reduces the flotation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the ore pulp air bubble generating device of the present application;

[0021] Figure 2 It is a connection structure schematic view of the plurality of air bubble generating devices and the air blower;

[0022] Figure 3 It is a whole structure schematic view of the flotation machine of the present application;

[0023] Figure 4 It is Figure 3 It is a structure schematic view from the second perspective;

[0024] Figure 5 It is an internal structure schematic view of the flotation tank;

[0025] Figure 6 It is a structure schematic view of the froth scraping mechanism.

[0026] In the figure: 1 - branch pipe; 2 - first spray pipe; 3 - second spray pipe; 4 - connecting pipe; 5 - main pipe; 6 - air inlet pipe; 7 - air blower; 8 - flotation tank; 9 - froth tank; 10 - belt; 11 - motor; 12 - froth scraping mechanism; 13 - support plate; 14 - support; 15 - driving pulley; 16 - driven pulley; 17 - first rotating shaft; 18 - second rotating shaft; 19 - first rotating roller; 20 - second rotating roller; 21 - third rotating roller; 22 - fourth rotating roller; 23 - first mounting belt; 24 - second mounting belt; 25 - first scraper; 26 - second scraper. DETAILED DESCRIPTION

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

[0028] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

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

[0030] As shown in Figure 1 , Figure 2 , the present application provides a kind of ore pulp bubble generating device, including air inlet pipe 6, one end of air inlet pipe 6 is fixedly connected with air blower 7 and communicates, wherein, in the embodiment, air blower 7 uses air suspension air blower 7;Air inlet pipe 6 is communicated with branch pipe 1 at the other end, and a plurality of first spray pipe 2 communicated with branch pipe 1 are fixedly installed on the side wall of branch pipe 1;Specifically, first spray pipe 2 is "L" shape, first spray pipe 2 is arranged along horizontal direction and is distributed in circumferential array on branch pipe 1, and the spout of first spray pipe 2 is towards clockwise or counterclockwise direction.

[0031] Through this installation mode, first spray pipe 2 can drive ore pulp to rotate by the power generated by high-pressure air while spraying a large amount of air, achieve the effect of impeller, compared with the amount of air introduced into ore pulp by the device, the amount of air introduced into ore pulp by the device is greatly improved, so more bubbles are generated, and the ore pulp is also stirred, so that the hydrophilic mineral can be normally attached to the bubble.

[0032] Since the high-pressure air is sprayed from the first spray pipe 2, the air has a high flow rate, and the branch pipe 1 is fixed, so that the high-pressure air can generate a force, i.e. stress, on the branch pipe 1, and the fixing point of the branch pipe 1 is very easy to be damaged under the action of the stress. Therefore, in order to maintain the stability of the device, a plurality of second spray pipes 3 in communication with the branch pipe 1 are fixedly installed on the side wall of the branch pipe 1, the second spray pipes 3 are located below the first spray pipe 2, the second spray pipes 3 have the same structure as the first spray pipe 2, the orientations of the spray nozzles of the second spray pipes 3 are opposite to the orientations of the spray nozzles of the first spray pipe 2, when the orientation of the spray nozzle of the first spray pipe 2 is clockwise, the orientation of the spray nozzle of the second spray pipe 3 is counterclockwise, and when the orientation of the spray nozzle of the first spray pipe 2 is counterclockwise, the orientation of the spray nozzle of the second spray pipe is clockwise.

[0033] As a further illustration of the present example, the branch pipe 1, the first spray pipe 2 and the second spray pipe 3 are all provided in multiple groups, the air outlet end of the air inlet pipe 6 is fixedly connected and communicated with the main pipe 5, a plurality of parallelly arranged connecting pipes 4 are fixedly connected and communicated with the main pipe 5, and the ends, away from the main pipe 5, of the connecting pipes 4 are fixedly connected and communicated with the top of the branch pipe 1. Through the arrangement of the multiple groups of the branch pipe 1, the first spray pipe 2 and the second spray pipe 3, the amount of air entering the ore pulp is further increased, the generation of air bubbles is further accelerated, and the efficiency of flotation is improved.

[0034] As shown in Figures 3 to 6 The utility model also provides a flotation machine using the above-mentioned ore pulp bubble generating device, which comprises a flotation tank 8, and the branch pipe 1, the first spray pipe 2 and the second spray pipe are fixedly installed in the interior of the flotation tank 8; specifically, the air blower 7 is located at the rear of the flotation tank 8, the end, away from the air blower 7, of the air inlet pipe 6 is fixedly connected and communicated with the main pipe 5, the plurality of connecting pipes 4 on the main pipe 5 extend to the interior of the flotation tank 8 through the rear wall of the flotation tank 8 and are fixedly connected and communicated with the branch pipe 1, a support plate 13 is fixedly installed on the rear wall of the flotation tank 8, a pipeline support 14 is fixedly installed on the support plate 13, and the main pipe 5 is fixedly installed on the support plate 13 through the support 14. A scum scraping mechanism 12 for scraping the scum floating on the top of the ore pulp is also installed on the inside top of the flotation tank 8.

[0035] The traditional froth scraping mechanism 12 is mainly composed of a rotating shaft and a scraper plate, the scraper plate rotates with the rotating shaft to scrape the froth. During the use of the froth generation device, it is found that the traditional froth scraping mechanism 12 has the following problems: the speed of the scraper plate in rotating and scraping the froth in the flotation tank 8 is slow, which cannot meet the characteristics of the large amount of bubbles generated by the froth generation device; and the installation of the rotating scraper plate only on the front side has two problems: first, part of the froth runs to the left and right sides when the scraper plate scrapes the froth; second, when the scraper plate separates from the ore pulp after pushing the ore pulp forward, the ore pulp will generate a backward flow due to the characteristics of the ore pulp flow, at this time, the backflow of the ore pulp froth is less, the speed of the froth flowing from the rear side of the flotation tank 8 to the front side is slow, and the second scraper plate will further push the part of the ore pulp forward, thereby reducing the efficiency of the froth scraping and the utilization rate of the scraper plate. Therefore, the froth scraping mechanism is improved to cope with the large amount of froth generated by the froth generation device.

[0036] The froth scraping mechanism 12 includes a first rotating shaft 17 rotatably installed on the flotation tank 8 and driven to rotate by a driving mechanism, the first rotating shaft 17 is located on the front side of the flotation tank 8, the rear side of the flotation tank 8 is also rotatably installed with a second rotating shaft 18, the first rotating shaft 17 is fixedly installed with a fourth rotating roller 22, the second rotating shaft 18 is fixedly installed with a third rotating roller 21, the fourth rotating roller 22 and the third rotating roller 21 are installed with a second installation belt 24, the fourth rotating roller 22 and the third rotating roller 21 are drivingly connected through the second installation belt 24, and the second installation belt 24 is fixedly installed with a plurality of second scraper plates 26 for scraping the froth. First rotating rollers 19 are arranged on the left and right sides of the fourth rotating roller 22, second rotating rollers 20 are arranged on the left and right sides of the third rotating roller 21, the first rotating rollers 19 are coaxially fixedly connected with the first rotating shaft 17, the second rotating rollers 20 are coaxially fixedly connected with the second rotating shaft 18, first installation belts 23 are installed on the first rotating rollers 19 and the second rotating rollers 20 on the same side, the first rotating rollers 19 and the second rotating rollers 20 are drivingly connected through the first installation belts 23, and the first installation belts 23 are installed with a plurality of first scraper plates 25. The plurality of first scraper plates 25 are equidistantly arranged on the first installation belt 23, the plurality of second scraper plates 26 are equidistantly arranged on the second installation belt 24, and the first scraper plates 25 and the second scraper plates 26 are arranged in an interpenetrating manner in the front-rear direction.

[0037] The alternate arrangement of the first scraper plates 25 and the second scraper plates 26 enables the first scraper plates 25 to continue to push the ore pulp leaked from the left and right sides of the second scraper plates 26 forward, and the next second scraper plate 26 can push the ore pulp flowing from the inner side of the first scraper plate 25 forward, and the two are alternately arranged, thereby improving the efficiency of the froth scraping. The first scraper plates 25 and the second scraper plates 26 are both moved from the rear side of the ore pulp to the frontmost position, thereby increasing the coverage of the froth pushing and the utilization rate of the scraper plate.

[0038] The driving mechanism in the above can be any structure capable of rotating the first rotating shaft 17. In the present embodiment, the driving mechanism comprises a motor 11 fixedly installed on the top of the flotation tank 8, the output end of the motor 11 is fixedly connected with a driving pulley 15, the driving pulley 15 is drivingly connected with a driven pulley 16 through a belt 10, and the driven pulley 16 is coaxially fixedly connected with the first rotating shaft 17.

[0039] As a further illustration of the present embodiment, the front side of the flotation tank 8 is also fixedly installed with a froth tank 9 for containing froth, and the top of the rear side of the froth tank 9 is communicated with the top of the front side of the flotation tank 8. The froth tank 9 belongs to the prior art, and the froth can enter the next process along the froth tank 9, which will not be described in detail here.

[0040] The working principle of the device is as follows: first, the pulp is introduced into the flotation tank 8, the blower 7 and the motor 11 are turned on, under the action of the blower 7, the first nozzle 2 and the second nozzle 3 introduce a large amount of high-pressure air into the pulp in the flotation tank 8 and generate bubbles, and drive the pulp to flow, in the process of the pulp flowing, the minerals with poor hydrophilicity in the pulp will adhere to the bubbles and rise to the upper layer of the pulp to form froth, then the first scraper 25 and the second scraper 26 will push the froth from the rear side of the flotation tank 8 to the front side of the flotation tank 8, and then the froth will be pushed into the froth tank 9, so as to realize flotation.

[0041] In summary, the pulp bubble generating device and the flotation machine provided by the present application can directly introduce high-pressure air into the pulp during flotation, thereby accelerating the speed of bubble generation. The first nozzle 2 is arranged in a "L" shape and in a circumferential array, so that the first nozzle 2 can not only introduce a large amount of air into the pulp, but also make the pulp flow, thereby improving the bubble generation efficiency and promoting the adhesion of bubbles and pulp, thereby improving the flotation efficiency and saving energy consumption. The arrangement of the plurality of first scrapers 25 and second scrapers 26 accelerates the efficiency of scraping the froth at the top of the pulp, so as to cope with the situation that the bubble generating device in the device can generate a large amount of bubbles and adhere quickly, thereby avoiding the problem of excessive accumulation of froth at the top of the pulp, which reduces the flotation efficiency.

[0042] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and substitutions can be made without departing from the technical principles of the present application, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A slurry bubble generating device, characterized in that, It includes an air inlet pipe (6), one end of the air outlet of the air inlet pipe (6) is connected to a branch pipe (1), and several first nozzles (2) connected to the branch pipe (1) are fixedly installed on the side wall of the branch pipe (1). The first nozzles (2) are arranged in a horizontal direction and distributed in a circular array on the branch pipe (1). The nozzles of the first nozzles (2) face clockwise or counterclockwise.

2. The slurry bubble generating device according to claim 1, characterized in that, The first nozzle (2) is L-shaped.

3. The slurry bubble generating device according to claim 2, characterized in that, Several second nozzles (3) connected to the branch pipe (1) are also fixedly installed on the side wall of the branch pipe (1). The second nozzles (3) are located below the first nozzle (2). The second nozzles (3) have the same structure as the first nozzle (2), and the nozzles of the second nozzles (3) and the first nozzle (2) are opposite in orientation.

4. The slurry bubble generating device according to claim 3, characterized in that, The branch pipe (1), the first nozzle (2), and the second nozzle (3) are all provided with multiple sets. One end of the air outlet of the air inlet pipe (6) is fixedly connected to and connected to the main pipe (5). Several parallel connecting pipes (4) are fixedly connected to and connected to the main pipe (5). The end of the connecting pipe (4) away from the main pipe (5) is fixedly connected to and connected to the top of the branch pipe (1).

5. A flotation machine using the slurry bubble generating device according to any one of claims 1-4, comprising a flotation tank (8), characterized in that, Both the branch pipe (1) and the first nozzle (2) are fixedly installed inside the flotation box (8). A skimming mechanism (12) for skimming off the foam floating on top of the slurry is also installed on the top of the inner side of the flotation box (8).

6. The flotation machine according to claim 5, characterized in that, The skimming mechanism (12) includes a first rotating shaft (17) rotatably mounted on the flotation tank (8) and driven to rotate by a drive mechanism. The first rotating shaft (17) is located on the front side of the flotation tank (8), and a second rotating shaft (18) is rotatably mounted on the rear side of the flotation tank (8). A fourth rotating roller (22) is fixedly mounted on the first rotating shaft (17), and a third rotating roller (21) is fixedly mounted on the second rotating shaft (18). A second mounting belt (24) is mounted on the fourth rotating roller (22) and the third rotating roller (21). The fourth rotating roller (22) and the third rotating roller (21) are connected by transmission through the second mounting belt (24). A plurality of second scrapers (26) for skimming off the foam are fixedly mounted on the second mounting belt (24).

7. The flotation machine according to claim 6, characterized in that, The fourth roller (22) is provided with first rollers (19) on both the left and right sides, and the third roller (21) is provided with second rollers (20) on both the left and right sides. The first roller (19) is coaxially fixedly connected to the first rotating shaft (17), and the second roller (20) is coaxially fixedly connected to the second rotating shaft (18). The first roller (19) and the second roller (20) on the same side are equipped with first mounting belts (23). The first roller (19) and the second roller (20) are connected by transmission through the first mounting belts (23). Several first scrapers (25) are installed on the first mounting belts (23).

8. The flotation machine according to claim 7, characterized in that, A plurality of first scrapers (25) are equidistantly arranged on the first mounting belt (23), and a plurality of second scrapers (26) are equidistantly arranged on the second mounting belt (24). The first scrapers (25) and the second scrapers (26) are interspersed in the front-back direction.

9. The flotation machine according to claim 6, characterized in that, The drive mechanism includes a motor (11) fixedly installed on the top of the flotation tank (8). The output end of the motor (11) is fixedly connected to a drive pulley (15). The drive pulley (15) is connected to a driven pulley (16) via a belt (10). The driven pulley (16) is coaxially fixedly connected to the first rotating shaft (17).

10. The flotation machine according to claim 5, characterized in that, A froth box (9) for holding froth is also fixedly installed on the front side of the froth box (8), and the top of the rear side of the froth box (9) is connected to the top of the front side of the froth box (8).

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