CN110614168B - Stirring type flotation machine with jet impeller - Google Patents
Stirring type flotation machine with jet impeller Download PDFInfo
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- CN110614168B CN110614168B CN201910917082.9A CN201910917082A CN110614168B CN 110614168 B CN110614168 B CN 110614168B CN 201910917082 A CN201910917082 A CN 201910917082A CN 110614168 B CN110614168 B CN 110614168B
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- ore pulp
- flotation
- jet
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- 238000005188 flotation Methods 0.000 title claims abstract description 72
- 238000003756 stirring Methods 0.000 title claims abstract description 38
- 230000008602 contraction Effects 0.000 claims abstract description 30
- 238000009792 diffusion process Methods 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000012141 concentrate Substances 0.000 claims abstract description 22
- 230000033558 biomineral tissue development Effects 0.000 claims abstract description 10
- 230000002708 enhancing effect Effects 0.000 claims abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 32
- 239000011707 mineral Substances 0.000 abstract description 32
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000002245 particle Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Paper (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to the technical field of mineral flotation, in particular to an agitating flotation machine with a jet impeller. This stirring formula flotation device includes flotation cell, feed mechanism, actuating mechanism, and feed mechanism's major structure sets up in the inside of flotation cell, is connected with the injection impeller on the actuating mechanism, and the injection impeller is located feed mechanism's major structure's below, and this stirring formula flotation device still includes circulation mechanism, and circulation mechanism's feed inlet setting is in the below of injection impeller, and circulation mechanism intercommunication injection impeller's inside. The jet impeller comprises a wheel disc, a contraction section arranged at the edge of the wheel disc and a diffusion section connected with the end part of the contraction section, and the wheel disc, the contraction section and the diffusion section are communicated with each other; the contraction section is used for enhancing the mixing mineralization efficiency of air and ore pulp, and the diffusion section reduces the flow velocity of the ore pulp, reduces the turbulence degree and controls the stability of a flow field in the flotation tank. The invention has simple structure, and can effectively increase the recovery rate of concentrate and improve the flotation efficiency.
Description
Technical Field
The invention relates to the technical field of mineral flotation, in particular to an agitating flotation machine with a jet impeller.
Background
The stirring type flotation machine is mainly used for the technical field of flotation of complex and difficult-to-separate minerals. The application fields mainly comprise coal slime, quartz minerals and the like. The mechanical stirring type flotation machine utilizes the impeller to stir and suck air, the impeller rotates at high speed to generate centrifugal force, the centrifugal force has good self-suction performance, meanwhile, vortex is generated in the flotation tank, air is dispersed into tiny bubbles and collides and adheres with mineral particles under the action of the vortex to form mineralized bubbles, and the mineralized bubbles rise to the liquid level to form a foam layer to be scraped out.
However, in recent years, with the increase of the mining degree of minerals and the development of mechanized mining technology, the quality of minerals is more and more complex, the separation of complex and difficult-to-separate minerals becomes a technical problem in the industry, and how to increase the recovery rate of concentrate and improve the flotation efficiency is a technical problem to be solved urgently in the technical field of mineral flotation.
Disclosure of Invention
In order to solve the technical problem, the invention provides the stirring type flotation machine with the jet impeller, which can increase the recovery rate of concentrate and improve the flotation efficiency of the concentrate.
In order to achieve the purpose, the invention adopts the following technical scheme:
an agitation type flotation machine with a jet impeller comprises a flotation tank, a feeding mechanism and a driving mechanism, wherein the main structure of the feeding mechanism is arranged in the flotation tank, the driving mechanism is connected with the jet impeller and used for driving the jet impeller to rotate, and the jet impeller is positioned below the main structure of the feeding mechanism; the stirring type flotation machine also comprises a circulating mechanism, wherein a feed inlet of the circulating mechanism is arranged below the jet impeller, and the circulating mechanism is communicated with the inside of the jet impeller;
the jet impeller comprises a wheel disc, a contraction section and a diffusion section, wherein the contraction section is arranged at the edge of the wheel disc, the diffusion section is connected with the outer end part of the contraction section, the wheel disc, the contraction section and the diffusion section are sequentially communicated, and an air inlet point is arranged on the wheel disc; the contraction section is used for enhancing the mixed mineralization efficiency of air and ore pulp, and the diffusion section is used for reducing the flow velocity of the ore pulp, reducing the turbulence degree and controlling the stability of a flow field in the flotation tank;
when the ore pulp of the feeding mechanism flows to the stirring area formed outside the jet impeller, the concentrate in the ore pulp is floated, and the rest sunken ore pulp enters the inside of the jet impeller through the circulating mechanism to perform circulating flotation.
Further, the contraction section is in a cavity tube shape, the diffusion section is in a cavity round table shape, the inner diameter of the diffusion section is sequentially increased along the flowing direction of ore pulp, the inner diameter of the contraction section is smaller than the inner height of the wheel disc, and the inner diameter of the contraction section is smaller than or equal to the minimum inner diameter of the diffusion section.
Further preferably, the air inlet point of the wheel disc is a third air inlet pipe arranged outside the wheel disc.
Further, circulation mechanism discharges a section of thick bamboo, circulating pipe, nozzle including the circulation ore pulp that communicates in proper order, the feed inlet setting that circulation ore pulp discharged a section of thick bamboo is in the below that sprays the impeller, circulating pipe intercommunication circulating pump, the nozzle sets up in actuating mechanism's bottom, and the nozzle is located the inside of rim plate, the circulating pipe passes through the orifice of nozzle and sprays the inside intercommunication of impeller.
Further, the driving mechanism comprises a rotating shaft and a motor for driving the rotating shaft to rotate, a sleeve group is rotatably arranged outside the rotating shaft, and an air inlet unit is arranged on the sleeve group;
the upper end of the rotating shaft is provided with an adapter, the rotating shaft rotates relative to the adapter, and the rotating shaft and the adapter are both in a cavity shape;
the lower end of the rotating shaft and the lower end of the sleeve group penetrate through the main body structure of the feeding mechanism and extend out of the lower part of the main body structure;
the nozzle and the jet impeller are arranged at the bottom end of the rotating shaft, and the circulating pipe, the adapter, the rotating shaft and the nozzle are communicated in sequence.
Further, feed mechanism includes the distributing box of tube-shape, connects inlet pipe on the distributing box, sets up the apron in the distributing box bottom, and wherein, the distributing box is feed mechanism's major structure, the inlet pipe mouth of inlet pipe extends to the outside of flotation cell, be provided with the discharge gate on the apron, the injection impeller is located the below of apron.
Preferably, the stirring type flotation machine further comprises a circulating cylinder positioned at the upper part of the distribution tank, the upper end and the lower end of the circulating cylinder are both in an open shape, and the circulating cylinder is communicated with the distribution tank;
the circulating cylinder is in a circular truncated cone shape, and the diameter of an upper cylinder opening of the circulating cylinder is larger than that of an upper groove opening of the distribution groove.
Further preferably, the sleeve set comprises an outer sleeve and an inner sleeve positioned inside the outer sleeve, the air inlet unit comprises a first air inlet pipe arranged on the outer sleeve and a second air inlet pipe arranged on the inner sleeve, the outer sleeve is communicated with a stirring area of the injection impeller, the injection impeller is rotatably arranged at the bottom end of the upper inner sleeve, and a third air inlet pipe on the injection impeller is positioned inside the inner sleeve;
the discharge gate on the apron is including the interior discharge gate that is located the outer sleeve outside, the play discharge gate that is located the circulation section of thick bamboo outside.
Preferably, the lower end face of the cover plate is provided with a stator, the inclination angle of the stator is 55-65 ℃, the inclination direction of the stator is consistent with the rotation direction of the jet impeller, and the stirring area is located in an area surrounded by the stator.
Further preferably, the circulation ore pulp discharge cylinder is in an inverted cone shape, the inner discharge port and the outer discharge port on the cover plate project to the circulation ore pulp discharge cylinder, and the projections of the inner discharge port and the outer discharge port are located inside the circulation ore pulp discharge cylinder.
The invention has the following beneficial effects:
(1) the ore pulp to be floated enters the stirring type flotation machine from the feeding mechanism, then enters a stirring area where the jet impeller is located from the feeding mechanism, the impeller is stirred at a high speed to form negative pressure, air is sucked from the first air inlet pipe, under the stirring and cutting action of the jet impeller, the air is dispersed and broken into tiny bubbles to collide with the ore pulp, mineralization is completed, then the ore pulp is thrown to the flotation tank under the action of the jet impeller rotating at a high speed, and minerals adhered to the surfaces of the bubbles float upwards along with the bubbles to form concentrate. And one part of the rest ore pulp sinks into the circulating mechanism and flows into the jet impeller to perform secondary intensified flotation, and the other part of the ore pulp is discharged through a tailing discharge pipe. The contraction section of the jet impeller forces the ore pulp to continuously flow at high pressure, air is torn and dispersed into tiny bubbles under the action of the shearing force of the ore pulp fluid, and the tiny bubbles are fully mixed with mineral particles, so that the mineralization efficiency is forcibly improved, and the flotation recovery rate of the concentrate is improved. The caliber of the discharge port of the diffusion section is larger than that of the feed port of the diffusion section, so that the flow velocity of ore pulp is reduced, the turbulence degree is reduced, the flow field in the flotation tank is kept stable, and the flotation efficiency is improved.
(2) The contraction section is in a cavity tube shape, the diffusion section is in a cavity round table shape, the inner diameter of the diffusion section is sequentially increased along the flowing direction of ore pulp, the inner diameter of the contraction section is smaller than the inner height of the wheel disc, and the inner diameter of the contraction section is smaller than or equal to the minimum inner diameter of the diffusion section. The ore pulp entering the inside of the jet impeller flows through the wheel disc, the contraction section and the diffusion section in sequence, wherein the passage for flowing the ore pulp in the contraction section is the narrowest.
The ore pulp forms high-speed efflux by the nozzle blowout, produce the negative pressure in the rim plate, the air is inhaled by the second intake pipe, get into the rim plate through the third breathing pipe, air and ore pulp intermix, in the contraction section, because the pipe diameter is less, the efflux velocity of flow is great, the air receives ore pulp efflux shearing force effect to cut apart into the microbubble, mix with ore pulp granule collision adhesion, later through the diffuser segment, the efflux velocity reduces gradually, pressure resumes gradually, the bubble that carries the ore pulp is appeared from the ore pulp gradually, later get into the flotation cell. The ore pulp jet injection increases the turbulence intensity in the impeller cavity, further promotes the dispersion of bubbles and particles, improves the collision probability of the bubbles and the particles, and improves the mineralization efficiency, thereby improving the recovery rate of the concentrate.
(3) The stator can stabilize the ore pulp liquid level, and the stator incline direction is unanimous with injection impeller stirring direction simultaneously, reduces the rotation of the outer ore pulp of injection impeller, improves the mixing efficiency of ore pulp and bubble, increases the inspiratory capacity of injection impeller stirring.
(4) During the floating process of the bubbles carrying the mineral particles, if the mineral particles fall off from the bubbles, the mineral particles can enter the distribution tank again through the circulating cylinder, so that the mineral particles enter the stirring area of the jet impeller again and collide and adhere to the bubbles to mineralize, and the full recovery flotation of the concentrate is ensured.
(5) The sleeve and the air inlet pipe communicated with the sleeve can enable outside air to enter the stirring area and the jet impeller, and two air suction methods of impeller stirring air suction and jet air suction are adopted, so that the air input in the flotation tank is ensured, and a bubble carrier is provided for flotation.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is an enlarged view of the jet impeller of the present invention;
fig. 3 is a schematic top view of the cover plate of the present invention.
The notations in the figures have the following meanings:
10-flotation tank 11-concentrate overflow port 12-tailings discharge pipe 20-feed pipe 21-distribution tank
22-cover plate 221-outer discharge opening 222-inner discharge opening 30-outer sleeve 31-first air inlet pipe
32-inner sleeve 33-second air inlet pipe 34-adapter 35-rotating shaft 36-first bearing seat
37-first rotary bearing 38-second bearing seat 39-second rotary bearing 40-circulating cylinder
41-nozzle 42-third bearing seat 43-third rotary bearing 44-jet impeller
441-third intake pipe 442-contraction section 443-diffusion section 444-wheel 45-stator
50-motor 51-belt 60-circulating pulp discharge drum 61-circulating pipe 62-circulating pump
Detailed Description
The technical scheme of the invention is clearly and completely described below by combining the embodiment and the attached drawings of the specification. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An agitation type flotation machine with a jet impeller 44 comprises a flotation tank 10, a feeding mechanism, a driving mechanism, a circulating mechanism and the jet impeller 44.
As shown in fig. 1, the feeding mechanism comprises a distribution tank 21 with an open bottom end, a feeding pipe 20 connected to the distribution tank 21, and a cover plate 22 arranged at the bottom end of the distribution tank 21, wherein the distribution tank 21 and the cover plate 22 are both located inside the flotation tank 10, and the opening of the feeding pipe 20 extends to the outside of the flotation tank 10. As shown in fig. 1, the injection impeller 44 is located below the cover plate 22, and as shown in fig. 2, a plurality of discharge ports are arranged on the cover plate 22, and the discharge ports include an inner discharge port 222 and an outer discharge port 221 which are annularly arranged. The cover plate 22 has a vent hole in the center. The lower end surface of the cover plate 22 is annularly provided with a plurality of stators 45, the inclination angles of the plurality of stators 45 are all 55-65 ℃, the inclination direction of the stators 45 is consistent with the rotation direction of the jet impeller 44, and the stirring area is positioned in the area surrounded by the plurality of stators 45.
As shown in fig. 1, the driving mechanism includes a rotating shaft 35, a motor 50, and a belt 51 disposed between the rotating shaft 35 and the motor 50, and a sleeve set is rotatably disposed outside the rotating shaft 35, as shown in fig. 1, the sleeve set includes an outer sleeve 30 and an inner sleeve 32 disposed inside the outer sleeve 30, and the rotating shaft 35 is disposed on a central axis of the inner sleeve 32. The part of the outer sleeve 30 extending outside the flotation tank 10 is communicated with a first air inlet pipe 31, and the part of the inner sleeve 32 extending outside the flotation tank 10 is communicated with a second air inlet pipe 33. The bottom port of the outer sleeve 30 is located outside of the vent hole in the cover plate 22 so that the outer sleeve 30 is in communication with the stirring area of the injection impeller 44 and external air can pass through the outer sleeve 30 into the stirring area to merge with the mineral. The injection impeller 44 is fixedly installed at the bottom end of the rotating shaft 35, as shown in fig. 2, the injection impeller 44 is rotatably connected with the inner sleeve 32 through a third rotating bearing 43, and the third rotating bearing 43 is installed on the third bearing seat 42, so that the injection impeller 44 rotates along with the rotating shaft 35 while the opposite inner sleeve 32 is stationary. The top of the outer sleeve 30 and the top of the inner sleeve 32 are rotatably connected to the rotating shaft 35 by a first rotating bearing 37, and the first rotating bearing 37 is mounted on the first bearing seat 36.
As shown in fig. 2, the jet impeller 44 includes a disk 444, a contraction section 442 provided at an edge of the disk 444, and a diffusion section 443 connected to an end of the contraction section 442, and the disk 444, the contraction section 442, and the diffusion section 443 are communicated with each other; the contraction section 442 is used for enhancing the mixing mineralization efficiency of air and ore pulp, and the diffusion section 443 is used for reducing the flow rate of the ore pulp, reducing the turbulence degree and controlling the stability of a flow field in the flotation tank 10. The wheel 444 of the jet impeller 44 is provided with a third intake pipe 441, and the third intake pipe 441 is located inside the inner sleeve 32.
As shown in fig. 1, the circulation mechanism includes a circulation pulp discharge cylinder 60, a circulation pipe 61, a nozzle 41, and a circulation cylinder 40 with a lower end located inside the distribution tank 21, which are sequentially communicated, the upper end and the lower end of the circulation cylinder 40 are both open, the circulation cylinder 40 is circular truncated cone-shaped, and the diameter of the upper cylinder opening of the circulation cylinder 40 is larger than that of the upper groove opening of the distribution tank 21. The inlet of the circulating pulp discharging cylinder 60 is arranged below the spraying impeller 44, the circulating pipe 61 is communicated with the circulating pump 62, the nozzle 41 is arranged at the bottom end of the rotating shaft 35, and the nozzle 41 is positioned inside the wheel disc 444. The adapter 34 is disposed above the rotating shaft 35, the adapter 34 communicates with the rotating shaft 35, the rotating shaft 35 rotates with the adapter 34 through a second rotating bearing 39, and the second rotating bearing 39 is disposed on the second bearing seat 38. In operation, the adapter 34 is not rotated, the rotating shaft 35 is rotated by the motor 50, and as shown in fig. 1, the circulating pipe 61, the adapter 34, the rotating shaft 35, and the nozzle 41 are sequentially communicated and communicated with the inside of the injection impeller 44 through the nozzle hole on the surface of the nozzle 41.
The operation process of the stirring type flotation machine for carrying out flotation on the ore pulp is as follows:
the slurry to be floated enters the distributing groove 21 through the feeding pipe 20, the jet impeller 44 rotates along with the rotating shaft 35 synchronously to generate low pressure, the slurry in the distributing groove 21 is sucked into a stirring area where the jet impeller 44 is positioned on the lower side of the cover plate 22 through the outer discharge port 221, at the same time, the low pressure generated by the rotation of the injection impeller 44 causes the external air to be sucked into the outer sleeve 30 through the first air inlet pipe 31, and to enter the stirring area where the injection impeller 44 is located, under the stirring and cutting action of the jet impeller 44, the air is dispersed and broken into tiny bubbles to collide with the ore pulp, the mineralization is completed, then the ore pulp is thrown to the flotation tank 10 under the action of the jet impeller 44 rotating at high speed, the minerals adhered to the surfaces of the bubbles float upwards to form concentrate, this portion of the concentrate floats up to the concentrate overflow 11 of the flotation cell 10 where it is collected by external concentrate collection equipment. The stator 45 can stabilize the liquid level of the ore pulp, and meanwhile, the direction of the stator 45 is consistent with the stirring direction of the jet impeller 44, so that the rotation of the ore pulp outside the jet impeller 44 is reduced, the mixing efficiency of the ore pulp and bubbles is improved, and the air suction capacity of the stirring of the jet impeller 44 is increased. Meanwhile, the slurry suspended in the flotation tank 10 is sucked into the stirring area again through the circulating cylinder 40 by the internal discharge port 222, so that the mineralization process of the slurry is enhanced.
If the mineral adhered to the surface of the bubbles is separated from the bubbles in the floating process, the part of the mineral sinks, and the part of the mineral enters the circulation cylinder 40 to be secondarily mineralized because the opening of the circulation cylinder 40 is large.
For complex refractory minerals, part of the refractory minerals entering the stirring area from the distribution tank 21 are difficult to mineralize and directly sink to the bottom of the flotation tank 10, and part of the refractory minerals are mixed with part of low-ash minerals, and the part of the low-ash minerals need to be circularly mineralized to float out the concentrate mixed in the low-ash minerals, so that the recovery rate of the concentrate is improved.
The part of refractory minerals sink into the circulating pulp discharge cylinder 60, the circulating pump 62 sequentially conveys the part of refractory minerals to the circulating pipe 61, the adapter 34 and the rotating shaft 35, the rotating shaft 35 and the adapter 34 rotate relatively and enter the nozzle 41 through the rotating shaft 35, high-speed jet pulp is formed under the convergence action of the nozzle 41, low pressure is formed in the jet impeller 44 by the high-speed jet pulp, air is sucked into the inner sleeve 32 through the second air inlet pipe 33 and enters the jet impeller 44 through the third air inlet pipe 441, and under the wrapping shearing action of jet flow generated by the nozzle 41, the air is crushed into bubbles and uniformly dispersed in the pulp. Because the inner diameter of the tubular constriction 442 is smaller than the inner height of the wheel disc 444, the bubbles and the mineral particles are fully mixed, and the mineralization effect of the mineral particles is enhanced. The mixed ore pulp is sprayed out through the diffusion section 443 of the hollow circular truncated cone, is released from the diffusion section 443, the pressure in the jet flow is reduced, bubbles dissolved in the ore pulp are separated and float, meanwhile, the ore pulp is sprayed through the high-speed rotation of the spraying impeller 44, the turbulence intensity in the flotation tank 10 is further enhanced, the collision adhesion effect of the part of refractory minerals and the bubbles is strengthened, and the refractory minerals are recovered.
Finally, the formed tailings are discharged through a tailing discharge pipe 12 at the bottom of the flotation tank 10, the floated foam concentrate is defoamed by utilizing spray water sprayed out by a nozzle 41, high-ash impurities carried in the foam concentrate are removed, and the foam concentrate is collected through a concentrate overflow port 11 after the quality of the concentrate is improved.
Claims (10)
1. The utility model provides a stirring formula flotation device of impeller is sprayed in area, this stirring formula flotation device include flotation cell (10), feed mechanism, actuating mechanism, feed mechanism's major structure sets up the inside at flotation cell (10), its characterized in that: the driving mechanism is connected with a jet impeller (44) and used for driving the jet impeller (44) to rotate, and the jet impeller (44) is positioned below the main body structure of the feeding mechanism; the stirring type flotation machine also comprises a circulating mechanism, wherein a feed inlet of the circulating mechanism is arranged below the jet impeller (44), and the circulating mechanism is communicated with the inside of the jet impeller (44);
the jet impeller (44) comprises a wheel disc (444), a contraction section (442) arranged at the edge of the wheel disc (444), and a diffusion section (443) connected with the outer end of the contraction section (442), wherein the wheel disc (444), the contraction section (442) and the diffusion section (443) are sequentially communicated, and an air inlet point is arranged on the wheel disc (444); the contraction section (442) is used for enhancing the mixed mineralization efficiency of air and ore pulp, and the diffusion section (443) is used for reducing the flow rate of the ore pulp, reducing the turbulence and controlling the stability of a flow field in the flotation tank;
when the ore pulp of the feeding mechanism flows to a stirring area formed outside the jet impeller (44), concentrate in the ore pulp is floated, and the rest sunken ore pulp enters the inside of the jet impeller (44) through the circulating mechanism to perform circulating flotation;
the feeding mechanism comprises a cylindrical distribution groove (21), a feeding pipe (20) connected to the distribution groove (21), and a cover plate (22) arranged at the bottom end of the distribution groove (21), wherein the distribution groove (21) is a main structure of the feeding mechanism.
2. An agitated flotation machine as claimed in claim 1 wherein: the contraction section (442) is in a hollow tubular shape, the diffusion section (443) is a hollow circular truncated cone shape, the inner diameters of the diffusion section (443) are sequentially increased along the flowing direction of ore pulp, the inner diameter of the contraction section (442) is smaller than the inner height of the wheel disc (444), and the inner diameter of the contraction section (442) is smaller than or equal to the minimum inner diameter of the diffusion section (443).
3. An agitated flotation machine as claimed in claim 1 or claim 2, wherein: the air inlet point of the wheel disc (444) is a third air inlet pipe (441) arranged outside the wheel disc.
4. An agitated flotation machine as claimed in claim 3 wherein: circulation mechanism discharges a section of thick bamboo (60), circulating pipe (61), nozzle (41) including the circulation ore pulp that communicates in proper order, the feed inlet setting of circulation ore pulp discharge a section of thick bamboo (60) is in the below of injection impeller (44), circulating pipe (61) intercommunication circulating pump (62), nozzle (41) set up in actuating mechanism's bottom, and nozzle (41) are located the inside of rim plate (444), the inside intercommunication of orifice and injection impeller (44) of nozzle (41) is passed through in circulating pipe (61).
5. An agitated flotation machine as claimed in claim 4 wherein: the driving mechanism comprises a rotating shaft (35) and a motor (50) for driving the rotating shaft (35) to rotate, a sleeve group is rotatably arranged outside the rotating shaft (35), and an air inlet unit is arranged on the sleeve group;
the upper end of the rotating shaft (35) is provided with an adapter (34), the rotating shaft (35) rotates relative to the adapter (34), and both the rotating shaft (35) and the adapter (34) are in a cavity shape;
the lower end of the rotating shaft (35) and the lower end of the sleeve group penetrate through the main structure of the feeding mechanism and extend out of the lower part of the main structure;
nozzle (41) and injection impeller (44) all set up the bottom in pivot (35), circulating pipe (61), adapter (34), pivot (35), nozzle (41) communicate in proper order.
6. An agitated flotation machine as claimed in claim 5 wherein: the inlet pipe mouth of inlet pipe (20) extends to the outside of flotation cell (10), be provided with the discharge gate on apron (22), injection impeller (44) are located the below of apron (22).
7. An agitated flotation machine as claimed in claim 6 wherein: the stirring type flotation machine also comprises a circulating cylinder (40) positioned at the upper part of the distribution tank (21), the upper end and the lower end of the circulating cylinder (40) are both in an open shape, and the circulating cylinder (40) is communicated with the distribution tank (21);
the circulating cylinder (40) is in a circular truncated cone shape, and the diameter of an upper cylinder opening of the circulating cylinder (40) is larger than that of an upper cylinder opening of the distribution groove (21).
8. An agitated flotation machine as claimed in claim 7 wherein: the sleeve set comprises an outer sleeve (30) and an inner sleeve (32) positioned inside the outer sleeve (30), the air inlet unit comprises a first air inlet pipe (31) arranged on the outer sleeve (30) and a second air inlet pipe (33) arranged on the inner sleeve (32), the outer sleeve (30) is communicated with a stirring area of the injection impeller (44), the injection impeller (44) is rotatably arranged at the bottom end of the inner sleeve (32), and a third air inlet pipe (441) on the injection impeller (44) is positioned on the inner side of the inner sleeve (32);
the discharge hole on the cover plate (22) comprises an inner discharge hole (222) positioned on the outer side of the outer sleeve (30) and an outer discharge hole (221) positioned on the outer side of the circulating cylinder (40).
9. An agitated flotation machine as claimed in claim 6 wherein: the lower end face of the cover plate (22) is provided with a stator (45), the inclination angle of the stator (45) is 55-65 ℃, the inclination direction of the stator (45) is consistent with the rotation direction of the jet impeller (44), and the stirring area is located in the area surrounded by the stator (45).
10. An agitated flotation machine as claimed in claim 8 wherein: the circulation ore pulp discharge cylinder (60) is in an inverted cone shape, the projections of the inner discharge port (222) and the outer discharge port (221) on the cover plate (22) to the circulation ore pulp discharge cylinder (60) are located inside the circulation ore pulp discharge cylinder (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917082.9A CN110614168B (en) | 2019-09-26 | 2019-09-26 | Stirring type flotation machine with jet impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917082.9A CN110614168B (en) | 2019-09-26 | 2019-09-26 | Stirring type flotation machine with jet impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110614168A CN110614168A (en) | 2019-12-27 |
| CN110614168B true CN110614168B (en) | 2020-07-28 |
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Family Applications (1)
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| CN201910917082.9A Active CN110614168B (en) | 2019-09-26 | 2019-09-26 | Stirring type flotation machine with jet impeller |
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| CN113000223B (en) * | 2021-02-24 | 2022-10-28 | 淮北强科矿山机械制造有限公司 | Mechanical stirring type mineral flotation machine |
| CN114210467B (en) * | 2021-11-10 | 2024-01-23 | 淮北矿业股份有限公司 | Coal slurry flotation device for coal washing and application method thereof |
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