Molybdenum ore flotation equipment and process

Abstract

The present invention relates to the field of flotation technology, and in particular to a molybdenum ore flotation equipment and process, comprising a frame and a stirring mechanism, wherein the frame has a stirring chamber inside, the stirring mechanism comprises a rotating shaft, a fixed cylinder is fixed on the frame, an air inlet pipe is connected to one side of the fixed cylinder, one end of the air inlet pipe is communicated with the inside of the fixed cylinder, the air inlet pipe is used to pass gas into the fixed cylinder, and the gas passes into the ore pulp liquid from the lower end of the fixed cylinder; the axis of the rotating shaft extends in the up-down direction, the rotating shaft is vertically arranged and rotatably penetrated in the fixed cylinder, the lower end of the rotating shaft is connected with a stirring wheel, the stirring wheel has stirring blades, the lower end of the fixed cylinder is rotatably connected with a spoiler, the spoiler is located at the periphery of the stirring wheel, and is coaxially arranged with the stirring wheel, the spoiler has spoiler blades, the spoiler is connected to the rotating shaft through a reversing mechanism, and when the driving mechanism drives the rotating shaft to rotate, the stirring wheel and the spoiler rotate in opposite directions. The present invention can reduce the possibility of bubble rupture and improve the efficiency of flotation.

Description

Technical Field

[0001] The present invention relates to the field of flotation technology, and in particular to a molybdenum ore flotation device and process. Background Art

[0002] The main beneficiation method for copper-molybdenum minerals is flotation. When screening ores mainly composed of molybdenum, a partial mixed priority flotation process is adopted. The partial mixed priority flotation process mainly includes molybdenum-copper mixed flotation, tailings flotation pyrite, copper-molybdenum separation and molybdenum concentrate. Usually, copper-molybdenum mixed flotation is carried out first, and then copper-molybdenum separation and molybdenum concentrate are selected.

[0003] Flotation machine is a device for flotation of copper-molybdenum minerals. Before flotation of copper-molybdenum minerals, copper-molybdenum ore is first crushed by a crusher and then enters a grinding machine for fine grinding. The grinding products of copper-molybdenum minerals are first sent to a hydrocyclone for classification, and the coarser minerals at the bottom of the classifier are returned to the ore mill for re-grinding. The classified slurry is sent to a stirring tank, and the stirred slurry enters a flotation machine for flotation. Necessary flotation agents are added to the flotation machine. After the flotation agent is mixed with the slurry, a large number of bubbles are generated by introducing gas to the bottom of the slurry. Molybdenum minerals are attached to the surface of the bubbles to form mineralized foam. The mineralized foam floats on the surface of the slurry to form a foam layer. The mineralized foam is collected by a scraper to obtain molybdenum concentrate.

[0004] However, most of the existing flotation machines use a stirring mechanism to speed up the mixing of the flotation agent and the pulp, thereby promoting the generation of bubbles. For example, the invention patent application with application publication number CN117244699A discloses a flotation device for copper-molybdenum ore dressing, which includes a frame, a stirring mechanism installed on the frame, and a driving motor installed on the outer wall of the frame. The driving shaft of the driving motor is equipped with a driving wheel, and the driving wheel is connected to the power wheel through a belt. A rotating shaft is installed on the inner wall of the power wheel. A fixed cylinder is fixed on the outer wall of the frame through a mounting frame, and one end of the rotating shaft passes through the fixed cylinder, and a stirring blade is installed at one end of the rotating shaft extending to the outer wall of the fixed cylinder. The stirring blade is driven by the rotation of the driving motor to rotate and then stir the liquid in the frame, so that the foaming agent added to the liquid is mixed with the pulp liquid and bubbles are generated. Because the stirring blade stirs the liquid, the liquid will have a relatively obvious rotation flow, and the generated bubbles are not easy to control. At the same time, the rotation flow of the liquid will affect the rise of the bubbles, which is easy to cause the bubbles to break before floating out of the liquid surface, thereby reducing the flotation efficiency. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention proposes a molybdenum ore flotation equipment and process to solve the technical problem in the prior art that the stirring causes the liquid to produce an obvious rotational flow, which affects the rise of bubbles and easily causes the bubbles to burst before floating to the liquid surface, thereby reducing the flotation efficiency.

[0006] A molybdenum ore flotation equipment and process of the present invention adopts the following technical solutions:

[0007] A molybdenum ore flotation device comprises a frame and a stirring mechanism, the frame has a stirring chamber for containing slurry liquid inside, the stirring mechanism comprises a driving mechanism and a rotating shaft connected to the driving mechanism in a transmission manner, the frame is fixed with a fixed cylinder, one side of the fixed cylinder is connected with an air inlet pipe, one end of the air inlet pipe is communicated with the inside of the fixed cylinder, the air inlet pipe is used to pass gas into the fixed cylinder, and the gas passes into the slurry liquid from the lower end of the fixed cylinder; the axis of the rotating shaft extends in the up-down direction, the rotating shaft is rotatably arranged in the up-down direction in the fixed cylinder, the lower end of the rotating shaft is connected with a stirring wheel, the stirring wheel has stirring blades, the lower end of the fixed cylinder is rotatably connected with a spoiler, the spoiler is located at the periphery of the stirring wheel and is coaxially arranged with the stirring wheel, the spoiler has spoiler blades, the spoiler is connected to the rotating shaft in a transmission manner through a reversing mechanism, and when the driving mechanism drives the rotating shaft to rotate, the stirring wheel and the spoiler rotate in opposite directions.

[0008] Further, the spoiler includes an annular rotating plate, the plate surface of the rotating plate is arranged perpendicular to the axis of the rotating shaft, the rotating plate is rotatably sleeved on the outside of the fixed cylinder, the spoiler blades are fixed on the lower side plate surface of the rotating plate, the reversing mechanism includes an upper bevel gear, an intermediate bevel gear and a lower bevel gear arranged in sequence from top to bottom, the upper bevel gear is fixedly connected to the rotating shaft, the intermediate bevel gear is an idler gear and is rotatably arranged on the side wall of the fixed cylinder, the lower bevel gear is fixed on the upper side of the rotating plate, and the upper bevel gear and the lower bevel gear are respectively meshed with the intermediate bevel gear for transmission.

[0009] Furthermore, a bubble guiding mechanism is provided in the stirring chamber, and the bubble guiding mechanism includes a supporting frame connected to the frame, the supporting frame is connected to an upper plate frame, the upper plate frame extends in a horizontal direction, and when in use, the upper plate frame is submerged below the surface of the slurry, and the upper plate frame includes a plurality of first connecting ribs arranged side by side and spaced apart, and a plurality of pointed cones are provided on the lower side of each first connecting rib, and an exhaust hole is provided on the periphery of each pointed cone, and the exhaust hole penetrates the first connecting rib in the up-down direction, and the pointed cone is used to puncture larger bubbles to form smaller bubbles, and guide the smaller bubbles to be discharged from the exhaust hole, and an air supply pipe is provided on the outer cone surface of the pointed cone, and an air supply hole is provided on the upper end of the pointed cone, and the air supply hole is connected to the air supply pipe, and the air supply hole blows air toward the periphery of the pointed cone through the air supply pipe.

[0010] Furthermore, a guide tube is fixed on the upper side of each first connecting rib, the guide tube extends in the up-down direction, the lower end of the guide tube is connected to the exhaust hole, and the upper end of the guide tube extends out of the slurry surface when in use, and the bubbles discharged from the exhaust hole are discharged to the slurry surface through the guide tube.

[0011] Furthermore, each pointed cone is provided with a plurality of air supply pipes on the outside, and the plurality of air supply pipes are evenly spaced along the circumference of the pointed cone. Each pointed cone is provided with a plurality of exhaust holes on the outside, and the plurality of exhaust holes are evenly spaced along the circumference of the pointed cone. A guide pipe is correspondingly provided for each exhaust hole, and air holes are opened on the side walls of each guide tube.

[0012] Furthermore, the support frame includes two slide rails arranged side by side and spaced apart, the slide rails are fixedly connected to the frame, two movable columns are slidably installed on the lower side of each slide rail, two upper plate frames are provided side by side, two ends of each upper plate frame are respectively connected to one of the movable columns on the two slide rails, the fixed cylinder is located between the two upper plate frames, a lead screw is rotatably installed on one of the two slide rails, and a guide column is fixed on the other, the two movable columns on the slide rail with the lead screw are respectively spirally installed on the lead screw, and the two movable columns on the slide rail with the guide column are respectively guide-installed on the guide column, one end of the lead screw is connected to a servo motor, and the servo motor can drive the lead screw to rotate forward or reverse, so that the two upper plate frames can reciprocate in the stirring chamber.

[0013] Furthermore, the screw is a bidirectional screw, which is provided with a forward thread and a reverse thread. Two movable columns installed on the screw cooperate with one forward thread and the other reverse thread. When the screw rotates forward or reversely, the two movable columns move closer to or away from each other.

[0014] Furthermore, a lower plate frame is correspondingly provided below each upper plate frame, and the lower plate frame has a plurality of second connecting ribs arranged side by side and spaced apart, and each second connecting rib is provided with a plurality of through holes whose axes extend in the up-and-down directions, and the plurality of through holes on the same second connecting rib are interconnected through a connecting groove, and the connecting groove is a conical groove which is narrow at the top and wide at the bottom.

[0015] Furthermore, the fixed cylinder includes an upper connecting cylinder and a lower air guide cylinder which are arranged in sequence from top to bottom, a connecting plate is provided on the outer side wall in the middle of the upper connecting cylinder, the upper connecting cylinder is fixed to the frame through the connecting plate, the upper end of the rotating shaft is rotatably installed in the upper connecting cylinder, the upper end of the lower air guide cylinder is fixedly connected to the lower end of the upper connecting cylinder, one end of the air intake pipe is fixedly connected to the lower air guide cylinder, and the air intake pipe is connected to the interior of the lower air guide cylinder.

[0016] A molybdenum ore flotation process adopts the molybdenum ore flotation equipment. When in use, slurry liquid is loaded into the stirring chamber, the driving mechanism drives the stirring wheel and the spoiler to rotate in opposite directions, the air inlet pipe introduces gas into the fixed cylinder, the gas is introduced into the bottom of the slurry liquid from the lower end of the fixed cylinder, bubbles are generated at the bottom of the slurry liquid, and the bubbles carry molybdenum minerals upward to float to the surface of the slurry liquid.

[0017] The beneficial effects of the present invention are as follows: a molybdenum ore flotation equipment and process of the present invention, by arranging a spoiler on the periphery of a stirring wheel, and making the stirring wheel and the spoiler rotate in opposite directions, when the stirring wheel located inside stirs the ore pulp liquid, the spoiler located outside can reversely stabilize the flow of the rotating ore pulp liquid, and the cooperation between the two can not only promote the full mixing and contact between the ore pulp liquid and the gas introduced into the bottom, but also reduce the fluidity of the ore pulp liquid, reduce the flow impact on the bubbles when they rise, thereby reducing the possibility of the bubbles bursting during the rising process, and improving the flotation efficiency.

[0018] Furthermore, by arranging a bubble guiding mechanism in the stirring chamber and piercing the bubbles with a sharp cone, larger bubbles can be dispersed into multiple smaller bubbles, and an air supply pipe is arranged at the position where the bubbles are pierced, and air is blown into the air supply pipe through the air supply hole. When the bubbles are pierced, the detached molybdenum minerals are reattached to new bubbles in time. This can not only reduce the shedding of molybdenum minerals, but also reduce the possibility of bubbles bursting after rushing out of the slurry surface, thereby improving the flotation efficiency of molybdenum minerals. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a molybdenum ore flotation device of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of a molybdenum ore flotation device of the present invention (after removing the bubble guide mechanism inside the stirring chamber);

[0022] Figure 3 It is a three-dimensional structural schematic diagram of a stirring structure in one embodiment of a molybdenum ore flotation device of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a bubble guiding mechanism in one embodiment of a molybdenum ore flotation device of the present invention;

[0024] Figure 5 It is a cross-sectional view of an upper plate frame in one embodiment of a molybdenum ore flotation device of the present invention;

[0025] Figure 6 for Figure 5 A magnified view of the part A in the middle;

[0026] Figure 7 It is a cross-sectional view of a lower plate frame in one embodiment of a molybdenum ore flotation device of the present invention;

[0027] Figure 8 It is a schematic diagram of the assembly of an upper connecting cylinder, a lower air guide cylinder, a rotating shaft, a stirring wheel, and a spoiler wheel in one embodiment of a molybdenum ore flotation device of the present invention;

[0028] Fig. 9 for Figure 8 A magnified view of the part B in the middle;

[0029] In the figure: 100, frame; 101, receiving trough; 102, feeding pipe; 103, shield; 200, scraper motor; 201, first belt; 202, first pulley; 203, support rod; 204, scraper; 30, stirring mechanism; 300, mounting seat; 301, stirring motor; 302, upper connecting cylinder; 303, air inlet pipe; 304, stirring shaft; 305, stirring wheel; 306, lower air guide cylinder; 307, spoiler; 308, rotating plate; 309, upper bevel gear; 310, middle bevel gear; 311, lower bevel gear; 40, bubble guide mechanism; 400, upper plate frame; 401, lower plate frame; 402, second connecting rib; 403, connecting groove; 404, first connecting rib; 405, annular groove; 406, exhaust hole; 407, pointed cone; 408, guide pipe; 409, air supply hole; 410, moving column; 411, lead screw; 412, telescopic cylinder; 413, slide rail; 414, servo motor; 415, sensor; 416, air supply pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] An embodiment of a molybdenum ore flotation device of the present invention is as follows Figures 1 to 9As shown, the molybdenum ore flotation equipment includes a frame 100, a stirring mechanism 30, a bubble guiding mechanism 40 and a foam scraping mechanism. The frame 100 has a stirring chamber for containing slurry liquid, and one end of the frame 100 is provided with a feed pipe 102 connected to the inside of the stirring chamber. When in use, the slurry liquid is transported to the stirring chamber through the feed pipe 102, and the stirring mechanism 30 extends into the stirring chamber and extends to the bottom of the slurry liquid, thereby stirring the slurry liquid. The bubbles generated at the bottom of the slurry liquid continuously float up, and finally float on the surface of the slurry liquid through the guidance of the bubble guiding mechanism 40, forming a stable foam layer. The foam scraping mechanism scrapes the foam floating on the surface of the slurry liquid toward one side of the frame 100, and a receiving trough 101 is provided on one side of the frame 100 for receiving the foam scraped out by the foam scraping mechanism.

[0032] In the present invention, the stirring mechanism 30 includes a driving mechanism and a rotating shaft connected to the driving mechanism. A fixed cylinder extending in the up-down direction is fixed on the frame 100, and the rotating shaft is rotatably installed in the fixed cylinder. An air inlet pipe 303 is connected to one side of the fixed cylinder, and one end of the air inlet pipe 303 is connected to the inside of the fixed cylinder. The air inlet pipe 303 is used to introduce gas into the fixed cylinder, and the gas is introduced into the slurry liquid from the lower end of the fixed cylinder.

[0033] The axis of the rotating shaft extends in the up-down direction, and the lower end of the rotating shaft extends out of the fixed cylinder and is connected to a stirring wheel 305, and the stirring wheel 305 has stirring blades. The lower end of the fixed cylinder is rotatably connected to a spoiler 307, and the spoiler 307 is located at the periphery of the stirring wheel 305 and is coaxially arranged with the stirring wheel 305. The spoiler 307 has spoiler blades, and the spoiler 307 is connected to the rotating shaft through a reversing mechanism. When the driving mechanism drives the rotating shaft to rotate, the stirring wheel 305 and the spoiler 307 rotate in opposite directions. By rotating the stirring wheel 305 and the spoiler wheel 307 in opposite directions, when the stirring wheel 305 located inside stirs the slurry liquid, the spoiler wheel 307 located outside can reversely stabilize the rotating slurry liquid. The cooperation between the two can not only promote the full mixing and contact between the slurry liquid and the gas introduced into the bottom, but also reduce the fluidity of the slurry liquid, reduce the flow impact on the bubbles when they rise, and thus reduce the possibility of bubbles bursting during the rising process, thereby improving the flotation efficiency.

[0034] In this embodiment, the spoiler 307 includes an annular rotating plate 308, the plate surface of the rotating plate 308 is arranged perpendicularly to the axis of the rotating shaft, the rotating plate 308 is rotatably sleeved on the outside of the fixed cylinder, and the spoiler blades are fixed on the lower plate surface of the rotating plate 308. The stirring wheel 305 includes a fixed plate, which is located below the rotating plate 308 and is arranged parallel to the rotating plate 308. The fixed plate is fixed to the lower end of the rotating shaft, and the stirring blades are fixed to the upper plate surface of the fixed plate. An annular chamber is formed between the rotating plate 308 and the fixed plate. When the air inlet pipe 303 delivers air into the fixed cylinder, the gas is discharged from the lower end of the fixed cylinder into the annular chamber and moves to the periphery of the annular chamber.

[0035] In this embodiment, the reversing mechanism includes an upper bevel gear 309, an intermediate bevel gear 310 and a lower bevel gear 311 which are arranged in sequence from top to bottom. The upper bevel gear 309 is fixedly connected to the rotating shaft. When the rotating shaft rotates, the upper bevel gear 309 rotates synchronously with the rotating shaft. The intermediate bevel gear 310 is an idler gear and is rotatably arranged on the side wall of the fixed cylinder. In this embodiment, a plurality of intermediate bevel gears 310 are arranged, and the plurality of intermediate bevel gears 310 are evenly spaced along the circumference of the rotating shaft. The lower bevel gear 311 is fixed on the upper side of the rotating plate 308. The upper bevel gear 309 and the lower bevel gear 311 are respectively meshed with the intermediate bevel gear 310 for transmission. When the rotating shaft rotates, the rotating shaft drives the stirring wheel 305 at its lower end to rotate synchronously. Under the action of the reversing mechanism, the spoiler 307 located at the periphery of the stirring wheel 305 rotates in the opposite direction relative to the fixed cylinder. After such an arrangement, when the stirring blades stir the slurry liquid between the fixed plate and the rotating plate 308, the spoiler blades located at the periphery stabilize the slurry liquid from the opposite direction. In addition, under the action of the reversing mechanism, the rotation speed of the peripheral spoiler 307 will be lower than the rotation speed of the inner stirring wheel 305, and the slurry liquid can be stabilized at a lower speed.

[0036] In this embodiment, the bubble guiding mechanism 40 is arranged in the stirring chamber, and the bubble guiding mechanism 40 includes a support frame connected to the frame 100, and the support frame is connected to an upper plate frame 400 and a lower plate frame 401, and the upper plate frame 400 and the lower plate frame 401 are arranged at intervals up and down, and both extend in the horizontal direction. When in use, the upper plate frame 400 and the lower plate frame 401 are both submerged under the surface of the slurry, thereby guiding the rising bubbles. In other embodiments, only the upper plate frame 400 may be provided on the support frame, and the lower plate frame 401 may not be provided.

[0037] The upper plate frame 400 includes a plurality of first connecting ribs 404 arranged side by side at intervals, and a plurality of pointed cones 407 are respectively arranged at intervals on the lower side of each first connecting rib 404, and an exhaust hole 406 is arranged on the periphery of each pointed cone 407, and the exhaust hole 406 penetrates the first connecting rib 404 in the up-down direction, and the pointed cone 407 is used to puncture bubbles with a larger volume to form smaller bubbles, and guide the smaller bubbles to be discharged from the exhaust hole 406. An air supply pipe 416 is arranged on the outer cone surface of the pointed cone 407, and an air supply hole 409 is arranged on the upper end of the pointed cone 407, and the air supply hole 409 is connected to the air supply pipe 416. When working, the air supply hole 409 is connected to an external air source (not shown in the figure), and the air supply hole 409 blows air toward the periphery of the pointed cone 407 through the air supply pipe 416. Since the pressure at the bottom of the slurry liquid is relatively high, as the bubbles gradually float up, the volume of the bubbles will gradually increase. In this way, bubbles with a larger volume are prone to burst when rushing out of the slurry liquid surface. In this embodiment, a sharp cone 407 is used to puncture the bubbles, so that the larger bubbles can be dispersed into multiple smaller bubbles, and an air supply pipe 416 is provided at the position where the bubbles are punctured. Air is blown into the air supply pipe 416 through the air supply hole 409. While puncturing the bubbles, the detached molybdenum minerals are reattached to the new bubbles in time. This can not only reduce the shedding of molybdenum minerals, but also reduce the possibility of bubbles bursting after rushing out of the slurry liquid surface, thereby improving the flotation efficiency of molybdenum minerals.

[0038] In this embodiment, a guide tube 408 is fixed on the upper side of each first connecting rib 404, and the guide tube 408 extends in the up-down direction. The lower end of the guide tube 408 is connected to the exhaust hole 406. The upper end of the guide tube 408 extends out of the slurry surface when in use, and the bubbles discharged from the exhaust hole 406 are discharged to the slurry surface through the guide tube 408. There are multiple air supply pipes 416 on the outside of each pointed cone 407. In this embodiment, there are four air supply pipes 416, and the four air supply pipes 416 are evenly spaced along the circumference of the pointed cone 407. There are multiple exhaust holes 406 on the periphery of each pointed cone 407. In this embodiment, there are four exhaust holes 406, and the four exhaust holes 406 are evenly spaced along the circumference of the pointed cone 407. The lower ends of the four exhaust holes 406 are connected to each other through the annular groove 405, and the annular groove 405 is a conical groove that is narrow at the top and wide at the bottom. A guide tube 408 is correspondingly provided for each exhaust hole 406 , and a ventilation hole is provided on the side wall of each guide tube 408 . The ventilation hole can facilitate the smooth passage of bubbles through the guide tube 408 .

[0039] In this embodiment, the upper plate frame 400 and the lower plate frame 401 can reciprocate horizontally in the stirring chamber. The support frame includes two slide rails 413 arranged side by side and fixedly connected to the frame 100. Two movable columns 410 are slidably installed on the lower side of each slide rail 413. The upper plate frame 400 and the lower plate frame 401 are respectively provided with two side by side, and the two ends of each upper plate frame 400 are respectively connected to one of the movable columns 410 on the two slide rails 413, and the two ends of each lower plate frame 401 are respectively connected to one of the movable columns 410 on the two slide rails 413. The fixed cylinder is located between the two upper plate frames 400 and between the two lower plate frames 401. A lead screw 411 is rotatably mounted on one of the two slide rails 413, and a guide column is fixed on the other. The two movable columns 410 on the slide rail 413 with the lead screw 411 are respectively spirally mounted on the lead screw 411, and the two movable columns 410 on the slide rail 413 with the guide column are respectively guided and mounted on the guide column. A servo motor 414 is connected to one end of the lead screw 411, and the servo motor 414 can drive the lead screw 411 to rotate forward or reverse, so that the two upper plate frames 400 and the two lower plate frames 401 can reciprocate in the stirring chamber.

[0040] In this embodiment, the lead screw 411 is a bidirectional lead screw, and a forward thread and a reverse thread are provided on the lead screw 411. One of the two movable posts 410 mounted on the lead screw 411 cooperates with the forward thread and the other cooperates with the reverse thread. When the lead screw 411 rotates forward or reversely, the two movable posts 410 are moved closer to or farther from each other, and then the two upper plate frames 400 are moved closer to or farther from each other, and the two lower plate frames 401 are also moved closer to or farther from each other. In this embodiment, in order to avoid the fixed cylinder, the two upper plate frames 400 and the lower plate frames 401 are provided with avoidance grooves on the opposite sides of the two upper plate frames 400 and the opposite sides of the two lower plate frames 401.

[0041] In this embodiment, the structure of the lower plate frame 401 is different from that of the upper plate frame 400, and the main difference is that the lower plate frame 401 has a plurality of second connecting ribs 402 arranged side by side and spaced apart, and each second connecting rib 402 is provided with a through hole whose axis extends in the up-down direction. The plurality of through holes on the same second connecting rib 402 are interconnected through a connecting groove 403, and the connecting groove 403 is a tapered groove narrow at the top and wide at the bottom, so that the bubbles below the lower plate frame 401 are gathered and pass through the upper end of the through hole.

[0042] In this embodiment, the upper plate frame 400 is movably connected with the moving column 410, that is, the moving column 410 moves through the upper plate frame 400, and the upper plate frame 400 can move up and down relative to the moving column 410. A telescopic cylinder 412 is connected between the slide rail 413 and the upper plate frame 400, and the telescopic cylinder 412 can drive the upper plate frame 400 to move up and down. In this embodiment, there are two stirring chambers in the frame 100, one on the left and one on the right, and each stirring chamber is correspondingly provided with a set of stirring mechanism 30 and a set of bubble guide mechanism 40, and a shield 103 is provided on the side wall of each stirring chamber. A sensor 415 is fixed on the side wall of the shield 103, and the sensor 415 is used to detect the height of the foam layer on the surface of the slurry. The sensor 415 is connected to a controller, and the controller is controlled and connected with the telescopic cylinder 412, and then the height of the upper plate frame 400 can be adjusted according to the height of the foam layer, so that the upper end of the guide pipe 408 on the upper plate frame 400 is exposed from the foam layer, so that the bubbles in the guide pipe 408 directly enter the top of the foam layer. At this time, the upper plate frame 400 is below the slurry surface.

[0043] In this embodiment, the structure of the foam scraping mechanism is the prior art, and only a brief description is given here. The foam scraping mechanism includes a scraper 204, a support rod 203, a first pulley 202, a scraper motor 200, and a first belt 201 connecting the scraper motor 200 and the first pulley 202. The two ends of the support rod 203 are rotatably mounted on the frame 100, the scraper 204 is arranged parallel to the support rod 203 and fixed on the support rod 203, the first pulley 202 is connected to one end of the support rod 203, and the scraper motor 200 is fixed on the frame 100 and is connected to the first pulley 202 through the first belt 201, thereby driving the scraper 204 to rotate.

[0044] In this embodiment, the fixed cylinder includes an upper connecting cylinder 302 and a lower air guide cylinder 306 which are arranged in sequence from top to bottom. A connecting plate is provided on the outer side wall of the middle part of the upper connecting cylinder 302. The upper connecting cylinder 302 is fixed to the frame 100 through the connecting plate. In order to ensure the stability and strength of the upper connecting cylinder 302, a plurality of ribs are provided between the side wall of the upper connecting cylinder 302 and the connecting plate. The upper end of the rotating shaft is rotatably mounted in the upper connecting cylinder 302. The upper end of the lower air guide cylinder 306 is fixedly connected to the lower end of the upper connecting cylinder 302. One end of the air inlet pipe 303 is fixedly connected to the lower air guide cylinder 306, and the air inlet pipe 303 is connected to the interior of the lower air guide cylinder 306. The driving mechanism of the stirring mechanism 30 includes a stirring motor 301. A mounting seat 300 is fixed to one side of the frame 100, and the stirring motor 301 is fixed to the mounting seat 300. After the stirring motor 301 is fixed on the mounting base 300, the output shaft of the stirring motor 301 extends in the up-down direction, and the upper end of the upper connecting cylinder 302 is rotatably provided with a second pulley, and the second pulley is non-rotatably connected to the upper end of the rotating shaft, and the second pulley rotates to drive the rotating shaft to rotate synchronously. A third pulley is connected to the output shaft of the stirring motor 301, and a second belt is connected between the third pulley and the second pulley.

[0045] An embodiment of a molybdenum ore flotation process of the present invention uses the above-mentioned molybdenum ore flotation equipment. The structure of the molybdenum ore flotation equipment is as follows: Figures 1 to 9 As shown, no further description is given here. During operation, the slurry liquid is first input into the stirring chamber through the feed pipe 102, and gas is introduced into the air inlet pipe 303. The gas is introduced into the bottom of the slurry liquid from the lower end of the fixed cylinder, and then the stirring motor 301 is used to drive the stirring shaft 304 to rotate, thereby driving the stirring wheel 305 to rotate, so that a large number of bubbles are generated at the bottom of the slurry liquid. While the rotating shaft drives the stirring wheel 305 to rotate, the rotating shaft drives the lower bevel gear 311 to rotate, and the lower bevel gear 311 is driven to rotate in the opposite direction through the idler gear, so that the spoiler 307 is reversed, so that the stirring wheel 305 and the spoiler 307 rotate in opposite directions, reducing the fluidity of the slurry.

[0046] When the bubbles float upward through the bubble guide mechanism 40, they first contact the lower plate frame 401 located below the upper plate frame 400. The multiple connecting grooves 403 on the lower side of the lower plate frame 401 gather smaller bubbles into large bubbles, and the large bubbles formed by the gathering can move upward quickly. Move to the lower side of the upper plate frame 400, use the sharp cone 407 to puncture the large bubbles and disperse them into a large number of small bubbles. At this time, after the sharp cone 407 punctures some of the large bubbles, the attached materials will fall off the bubbles, so that the gas replenishment pipe 416 on the periphery of the sharp cone 407 is used to continuously replenish gas around the sharp cone 407, so that the molybdenum ore materials after the large bubbles are broken are adsorbed again by the newly generated bubbles, and the small bubbles formed after being punctured by the sharp cone 407 and the small bubbles formed by the gas replenishment enter the guide pipe 408 from the exhaust hole 406 upward, and float upward through the guide pipe 408. Since the upper end of the guide pipe 408 exposes the foam layer on the surface of the ore slurry, the small bubbles in the guide pipe 408 can directly enter the foam layer. Then, the foam is scraped off into the receiving trough 101 by utilizing the foam scraping mechanism.

[0047] When the bubble guiding mechanism 40 collects and disperses the bubbles, the servo motor 414 is used to drive the lead screw 411 to rotate, driving the two movable columns 410 on each slide rail 413 to move relative to or away from each other, thereby driving the two sets of upper plate frames 400 and lower plate frames 401 to move back and forth.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A molybdenum ore flotation device, comprising a frame (100) and a stirring mechanism (30), wherein the frame (100) has a stirring chamber for containing ore pulp liquid, wherein the stirring mechanism (30) comprises a driving mechanism and a rotating shaft drivingly connected to the driving mechanism, wherein a fixed cylinder is fixed to the frame (100), wherein one side of the fixed cylinder is connected to an air inlet pipe (303), wherein one end of the air inlet pipe (303) is communicated with the interior of the fixed cylinder, wherein the air inlet pipe (303) is used to introduce gas into the fixed cylinder, and the gas is introduced into the ore pulp liquid from the lower end of the fixed cylinder; wherein the axis of the rotating shaft extends in the up-down direction, wherein the rotating shaft is vertically arranged and rotatably penetrates the fixed cylinder, wherein the lower end of the rotating shaft is connected to a stirring wheel (305), wherein the stirring wheel (305) has stirring blades, wherein: The lower end of the fixed cylinder is rotatably connected to a spoiler (307); the spoiler (307) is located at the periphery of the stirring wheel (305) and is arranged coaxially with the stirring wheel (305); the spoiler (307) has spoiler blades; the spoiler (307) is transmission-connected to the rotating shaft via a reversing mechanism; when the driving mechanism drives the rotating shaft to rotate, the stirring wheel (305) and the spoiler (307) rotate in opposite directions; the spoiler (307) comprises an annular rotating plate (308); the plate surface of the rotating plate (308) is aligned with the axis of the rotating shaft. The rotating plate (308) is vertically arranged, the rotating plate (308) is rotatably sleeved on the outside of the fixed cylinder, the spoiler blades are fixed on the lower side plate surface of the rotating plate (308), the reversing mechanism comprises an upper bevel gear (309), an intermediate bevel gear (310) and a lower bevel gear (311) which are arranged in sequence from top to bottom, the upper bevel gear (309) is fixedly connected to the rotating shaft, the intermediate bevel gear (310) is an idler gear and is rotatably arranged on the side wall of the fixed cylinder, the lower bevel gear (311) is fixed on the upper side of the rotating plate (308), and the upper bevel gear (309) and the lower bevel gear (311) are arranged in sequence from top to bottom. 1) are respectively meshed with the intermediate bevel gear (310) for transmission; a bubble guiding mechanism (40) is provided in the stirring chamber, the bubble guiding mechanism (40) comprises a support frame connected to the frame (100), the support frame is connected to an upper plate frame (400), the upper plate frame (400) extends in a horizontal direction, when in use, the upper plate frame (400) is submerged below the surface of the slurry, the upper plate frame (400) comprises a plurality of first connecting ribs (404) arranged side by side at intervals, a plurality of sharp cones (407) are respectively provided on the lower side of each first connecting rib (404), and each sharp cone (407) has a An exhaust hole (406) is provided on the periphery, and the exhaust hole (406) penetrates the first connecting rib (404) in the up-down direction. The pointed cone (407) is used to puncture bubbles with a larger volume to form smaller bubbles, and guide the smaller bubbles to be discharged from the exhaust hole (406). An air supply pipe (416) is provided on the outer cone surface of the pointed cone (407). An air supply hole (409) is provided at the upper end of the pointed cone (407), and the air supply hole (409) is connected to the air supply pipe (416). The air supply hole (409) blows air toward the periphery of the pointed cone (407) through the air supply pipe (416).

2. The molybdenum ore flotation equipment according to claim 1, characterized in that: A guide tube (408) is fixed on the upper side of each first connecting rib (404), the guide tube (408) extending in the up-down direction, the lower end of the guide tube (408) communicating with the exhaust hole (406), the upper end of the guide tube (408) extending out of the slurry surface when in use, and the bubbles exhausted from the exhaust hole (406) are exhausted onto the slurry surface through the guide tube (408).

3. The molybdenum ore flotation equipment according to claim 2, characterized in that: A plurality of air supply pipes (416) are provided on the outside of each pointed cone (407), and the plurality of air supply pipes (416) are evenly spaced along the circumference of the pointed cone (407). A plurality of exhaust holes (406) are provided on the outside of each pointed cone (407), and the plurality of exhaust holes (406) are evenly spaced along the circumference of the pointed cone (407). A guide pipe (408) is provided corresponding to each exhaust hole (406), and a ventilation hole is provided on the side wall of each guide pipe (408).

4. The molybdenum ore flotation equipment according to claim 1, characterized in that: The support frame comprises two slide rails (413) arranged side by side and spaced apart, the slide rails (413) are fixedly connected to the frame (100), two movable columns (410) are slidably mounted on the lower side of each slide rail (413), two upper plate frames (400) are arranged side by side, and two ends of each upper plate frame (400) are respectively connected to one of the movable columns (410) on the two slide rails (413), the fixed cylinder is located between the two upper plate frames (400), and a lead screw (411) is rotatably mounted on one of the slide rails (413) ), a guide column is fixed on the other slide rail (413), two movable columns (410) on the slide rail (413) provided with a lead screw (411) are respectively screwed on the lead screw (411), and two movable columns (410) on the slide rail (413) provided with a guide column are respectively guided and installed on the guide column, and one end of the lead screw (411) is connected to a servo motor (414), and the servo motor (414) can drive the lead screw (411) to rotate in a forward or reverse direction, so that the two upper plate frames (400) can reciprocate in the stirring chamber.

5. The molybdenum ore flotation equipment according to claim 4, characterized in that: The lead screw (411) is a bidirectional lead screw, and is provided with a forward thread and a reverse thread. Two movable columns (410) mounted on the lead screw (411) cooperate with the forward thread, and cooperate with the reverse thread. When the lead screw (411) rotates in the forward or reverse direction, the two movable columns (410) move closer to or farther from each other.

6. The molybdenum ore flotation equipment according to claim 5, characterized in that: A lower plate frame (401) is correspondingly provided below each upper plate frame (400), and the lower plate frame (401) has a plurality of second connecting ribs (402) arranged side by side and spaced apart from each other, and each second connecting rib (402) is provided with a plurality of through holes with axes extending in the up-down direction, and the plurality of through holes on the same second connecting rib (402) are interconnected via a connecting groove (403), and the connecting groove (403) is a tapered groove that is narrow at the top and wide at the bottom.

7. The molybdenum ore flotation equipment according to claim 1, characterized in that: The fixed cylinder comprises an upper connecting cylinder (302) and a lower air guide cylinder (306) which are arranged in sequence from top to bottom; a connecting plate is provided on the outer side wall of the middle portion of the upper connecting cylinder (302); the upper connecting cylinder (302) is fixed to the frame (100) via the connecting plate; the upper end of the rotating shaft is rotatably mounted in the upper connecting cylinder (302); the upper end of the lower air guide cylinder (306) is fixedly connected to the lower end of the upper connecting cylinder (302); one end of the air intake pipe (303) is fixedly connected to the lower air guide cylinder (306); and the air intake pipe (303) is communicated with the interior of the lower air guide cylinder (306).

8. A molybdenum ore flotation process, characterized in that: The molybdenum ore flotation equipment according to any one of claims 1 to 7 is used. When in use, slurry liquid is loaded into the stirring chamber, the driving mechanism drives the stirring wheel (305) and the spoiler (307) to rotate in opposite directions, and the air inlet pipe (303) introduces gas into the fixed cylinder. The gas is introduced into the bottom of the slurry liquid from the lower end of the fixed cylinder, and bubbles are generated at the bottom of the slurry liquid. The bubbles carry molybdenum minerals upward to the surface of the slurry liquid.

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