CN109939838B - Forced circulation rapid flotation separation device and method - Google Patents
Forced circulation rapid flotation separation device and method Download PDFInfo
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- CN109939838B CN109939838B CN201910354952.6A CN201910354952A CN109939838B CN 109939838 B CN109939838 B CN 109939838B CN 201910354952 A CN201910354952 A CN 201910354952A CN 109939838 B CN109939838 B CN 109939838B
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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
- B03D1/02—Froth-flotation processes
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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
Abstract
A forced circulation rapid flotation separation device and method are suitable for floating coarse-grained minerals or coal. Comprises a transmission mechanism, a flotation tank body, a rapid floating system and a forced circulation system; the flotation cell body below is the back-up table, and the top is equipped with the foam tank, and the lowest department of foam tank is equipped with concentrate discharging pipe, is located foam tank department in the drum and is equipped with the sieve, is equipped with forced circulation system in the flotation cell body back-up table, is equipped with a plurality of guide plates between forced circulation system and the sieve, and flotation cell body top is equipped with drive mechanism, forced circulation system comprises last draft tube, thrust wheel, dispersion stator, centrifugal mineralization wheel and the lower guiding device who sets up to fix in the cell body bottom below the centrifugal mineralization wheel. The device has simple structure and high separation efficiency.
Description
Technical Field
The invention relates to a separation device and a separation method, in particular to a forced circulation rapid flotation separation device and a forced circulation rapid flotation separation method which are applicable to flotation separation of easily-floating coarse-grained minerals or coal.
Background
Currently, the equipment for mineral flotation separation mainly comprises two main types of equipment, namely a flotation machine and a flotation column. Among them, flotation machines are considered to be relatively suitable for coarse-grained mineral flotation and are widely used and practiced industrially. According to the working principle, the mechanical stirring type flotation machine and the air type flotation machine can be mainly classified. The self-sucking mechanical stirring flotation machine is that the rotation of an impeller or a rotor causes ore pulp to be aerated and stirred; the air-agitating flotation machine is a flotation machine in which mechanical agitation is combined with external air pressure. Air-compressing flotation machine the flotation machine is that the external air compressor is used for feeding compressed air so as to make ore pulp be aerated and stirred. The gas precipitation type flotation machine is a method for separating out dispersion bubbles from ore pulp by changing the pressure of gas in the ore pulp, and stirring the ore pulp. The flotation machines all have the defect that an effective ore pulp circulation mineralization separation mechanism is lacked in a single device, and particularly for refractory mineral particles; in addition, the flotation of coarse-grain minerals has the defects of weak suspension dispersion capability, low upward floating speed and the like, and the means for improving the flotation recovery rate of the minerals mainly depends on increasing the number of flotation machines. Thus, there is a need to remedy the above-mentioned deficiencies by designing a new flotation machine on the basis of a rational flotation separation process design.
Disclosure of Invention
Technical problems: aiming at the technical problems, the forced circulation rapid flotation separation device and the forced circulation rapid flotation separation method have the advantages that the structure is simple, the recovery capacity of coarse-particle minerals is enhanced through the implementation of rapid flotation and forced circulation mineralization, so that the problems of insufficient ore pulp circulation capacity, low coarse-particle flotation speed and the like in the existing tank flotation process are solved, the suspension capacity and the flotation speed of the coarse-particle minerals are improved, and the recovery capacity of the coarse-particle minerals is enhanced.
The technical scheme is as follows: in order to achieve the technical aim, the forced circulation rapid flotation separation device comprises a transmission mechanism, a flotation tank body, a rapid flotation system and a forced circulation system;
the flotation tank body comprises a cylinder, a reverse bench with a funnel structure is arranged below the cylinder, a foam tank is arranged at the top of the cylinder, a concentrate discharging pipe is arranged at the lowest part of the foam tank, a sieve plate is arranged at the position of the foam tank in the cylinder, a forced circulation system is arranged in the reverse bench of the flotation tank body, a plurality of guide plates are vertically arranged in the side wall of the flotation tank body between the forced circulation system and the sieve plate, a gas dispersion tank is arranged at the bottom of the reverse bench of the flotation tank body, a first microbubble generator forming an angle of 45 degrees with the vertical direction is arranged on the side wall of the gas dispersion tank body, a tailing discharging pipe is arranged at the bottom of the gas dispersion tank body, a transmission mechanism is arranged at the top of the flotation tank body and is fixed on the flotation tank body through a supporting frame, a stirring shaft extending into the flotation tank body and connected with the forced circulation system is arranged below the transmission mechanism, a feeding sleeve is arranged at the position between the sieve plate and the forced circulation system, the side of the feeding sleeve is provided with a feeding pre-mineralization pipe extending to the outer side of the flotation tank body, the feeding pre-mineralization pipe is provided with a second microbubble generator forming an angle of 45 degrees with the feeding direction, a rapid floating cover plate is arranged below the feeding sleeve, the rapid floating cover plate is arranged in the middle of the flotation tank body, a centrifugal dispersing wheel is arranged below the rapid floating cover plate on a stirring shaft, the forced circulation system comprises an upper guide cylinder, a propelling wheel, a dispersing stator, a centrifugal mineralization wheel and a lower guide device arranged below the centrifugal mineralization wheel and fixed at the bottom of the tank body, the dispersing stator is matched with the lower guide device, the propelling wheel is arranged in the upper guide cylinder, the center of the propelling wheel is penetrated by the stirring shaft, the lower guide device comprises a guide inverted cone, a discharging bottom plate and a lower guide cylinder arranged in the middle of the discharging bottom plate, the discharging bottom plate is provided with holes in the center and the periphery of the discharging bottom plate, the guide cylinder is arranged below the discharging bottom plate, the centrifugal mineralization wheel is arranged at the center of the flow-guiding back taper, the dispersion stator comprises a plurality of rectangular ore pulp dispersion plates and a mineralization cover plate, wherein the rectangular ore pulp dispersion plates are uniformly and vertically arranged between the inner diameter of the flow-guiding back taper and the centrifugal mineralization wheel along the radial direction, the circular mineralization cover plate is arranged above the rectangular ore pulp dispersion plates, and the stirring shaft penetrates through the mineralization cover plate to be finally connected with the centrifugal mineralization wheel.
The rapid floating system is arranged above the forced circulation system; the guide cylinder is of an open inverted cone structure, and the propelling wheel is arranged in the guide cylinder and fixed on the stirring shaft; the discharging bottom plate is arranged at the conical position at the bottom of the tank body and is close to the lower part of the ore pulp dispersing plate, and ore pulp discharging holes are formed between the discharging bottom plate and the tank wall of the inverted ladder table; microporous ceramics are arranged in the first microbubble generator and the second microbubble generator.
A forced circulation rapid flotation separation method comprises the following steps:
a. firstly closing a tailing discharging pipe, feeding the pulp after pulp mixing into a feeding pre-mineralization pipe through an inlet of the feeding pre-mineralization pipe, and feeding compressed air into the feeding pre-mineralization pipe through an inlet of a second microbubble generator through an inlet of the second microbubble generator to pre-mineralize the pulp by mixing with the pulp;
b. the mixed and pre-mineralized ore pulp enters a feeding sleeve, the ore pulp in the feeding sleeve is fed into a flotation tank body under the action of a rotating centrifugal dispersion wheel, the ore pulp enters the lower half part of a reverse bench through a hole and a gap of a discharging bottom plate, compressed air is fed into a gas dispersion tank through a first micro bubble generator inlet of a first micro bubble generator to be mixed with the ore pulp, the mixed ore pulp enters the centrifugal mineralization wheel from a lower guide cylinder, and generates upward buoyancy in the continuously rising ore pulp liquid surface along a rectangular ore pulp dispersion plate and a diversion reverse cone under the action of the centrifugal mineralization wheel, when the ore pulp liquid surface rises above a fast floating cover plate, the fast floating cover plate starts to enhance the suction force generated when the centrifugal dispersion wheel rotates, thereby generating suction force on the fed ore pulp, enhancing the circulation of the ore pulp and the mineralization of mineral particles, and when the liquid surface of the ore pulp exceeds about 200mm away from an overflow surface of an overflow groove, the fast floating cover plate and the centrifugal dispersion wheel form fast foam at the moment, the fast floating particles in the mixed ore pulp flow after the pre-mineralization enter the centrifugal mineralization wheel, and the fast floating particles in the ore pulp through the fast floating cover plate and flow to be forced to flow into a material discharge pipe through the upper guide cylinder after the rectification, the fast floating cover plate and the ore pulp flow pipe to flow into the ore suspension pipe after the circulation pipe, and the ore floating particles are further forced to flow and the ore flow circulation pipe and the ore pulp flow in the floating pipe after the ore floating pipe;
c. the floating particles in the flotation tank body flow out through a discharge hole in the central position of a discharge bottom plate on the discharge bottom plate, one part of the particles are discharged from a tailing discharge pipe outlet of a tailing discharge pipe at the bottom of the tank body, and the other part of the particles are sucked into the centrifugal mineralization wheel through a lower guide cylinder in the middle of the discharge bottom plate under the action of centrifugal suction of the centrifugal mineralization wheel, at the moment, a space is formed among the rapid floating cover plate, the discharge bottom plate and the centrifugal mineralization wheel, and the rapid floating cover plate, the discharge bottom plate and the centrifugal mineralization wheel are dispersed into the flotation tank body through centrifugal force generated when the centrifugal mineralization wheel rotates;
d, compressed air is sent into the gas dispersion tank through the inlet of the first micro-bubble generator, and is sucked into a space formed between the mineralized cover plate and the discharging bottom plate together with ore pulp through the lower guide cylinder in the middle of the discharging bottom plate;
e. the collision between the particles and bubbles is strengthened under the action of a centrifugal mineralization wheel for the medium floatable particles and the hard floatable particles, the medium floatable particles and the hard floatable particles are dispersed into the tank body by a rectangular ore pulp dispersion plate and a diversion inverted cone on the stator, the medium floatable and hard floatable mineralization particles are lifted and floated, and the medium floatable and hard floatable particles and the fast floatable foam are discharged out of the tank body; the particles which are not mineralized and separated are circularly separated in the tank body for a plurality of times, and tailings are discharged from an outlet of a tailings discharging pipe at the bottom of the tank body.
The beneficial effects are that: compared with the prior art, the pulp flowing and flotation separation process is more reasonable, the pulp after pulp mixing and pre-mineralization is fed into the tank body through the rapid floating system, and easily floating particles are quickly floated; the medium floatable particles and the hard floatable particles are subjected to forced circulation system to strengthen the collision between the particles and bubbles under the action of a centrifugal mineralization wheel, and are dispersed into the tank body by a diversion inverted cone capable of generating upward flow, so that mineralized particles and fast floatable foam are rapidly discharged out of the tank body, and the particles which are not mineralized are subjected to repeated circulation separation in the tank body; the upward flow generated by the bottom flow guiding inverted cone further improves the suspension capability and the floatation speed of coarse-grain minerals, the forced circulation system strengthens the mineralization effect on medium floatable and difficultly floatable grains, and the recovery capability of the mineral grains is improved.
The recovery capability of a single flotation machine to coarse-particle minerals is enhanced through the implementation of rapid flotation and forced circulation mineralization, so that the problems of insufficient ore pulp circulation capability, low coarse-particle flotation speed and the like in the existing tank flotation process are solved, the suspension capability and the flotation speed of the coarse-particle minerals are improved, the recovery capability of the coarse-particle minerals is enhanced, and the flotation energy efficiency of the single flotation machine is improved.
Drawings
Fig. 1 is a schematic structural view of a forced circulation rapid flotation separation device of the invention.
In the figure: the device comprises a 1-foam tank, a 2-concentrate discharge pipe, a 3-flotation tank body, a 4-guide plate, a 5-guide inverted cone, a 6-lower guide cylinder, a 7-first microbubble generator, an 8-transmission mechanism, a 9-stirring shaft, a 10-sieve plate, an 11-quick-floating cover plate, a 12-centrifugal dispersion wheel, a 13-pushing wheel, a 14-ore pulp dispersion plate, a 15-supporting frame, a 16-feed sleeve, a 17-upper guide cylinder, a 18-mineralization cover plate, a 19-centrifugal mineralization wheel, a 20-tailing discharge pipe, a 21-second microbubble generator, a 22-feed pre-mineralization pipe, a 23-discharge bottom plate, a 24-gas dispersion tank, an A-feed pre-mineralization pipe inlet, a B-second microbubble generator inlet, a C-first microbubble generator inlet, a D-tailing discharge pipe outlet and an E-concentrate discharge pipe outlet.
Description of the embodiments
The following detailed description of specific embodiments of the invention is further detailed in conjunction with the accompanying drawings:
as shown in fig. 1, the forced circulation rapid flotation separation device comprises a transmission mechanism 8, a flotation tank body 3, a rapid flotation system and a forced circulation system;
the flotation tank body 3 comprises a cylinder, a reverse ladder table with a funnel structure is arranged below the cylinder, a foam tank 1 is arranged at the top of the cylinder, a concentrate discharging pipe 2 is arranged at the lowest part of the foam tank 1, a sieve plate 10 is arranged at the position of the foam tank 1 in the cylinder, a forced circulation system is arranged in the reverse ladder table of the flotation tank body 3, a plurality of guide plates 4 are vertically arranged in the side wall of the flotation tank body 3 between the forced circulation system and the sieve plate 10, a gas dispersion tank 24 is arranged at the bottom of the reverse ladder table of the flotation tank body 3, a first microbubble generator 7 forming an angle of 45 DEG with the vertical direction is arranged on the side wall of the gas dispersion tank 24, a tailing discharging pipe 20 is arranged at the bottom of the gas dispersion tank 24, a transmission mechanism 8 is arranged at the top of the flotation tank body 3, the transmission mechanism 8 is fixed on the flotation tank body 3 through a supporting frame 15, a stirring shaft 9 extending into the flotation tank body 3 and connected with the forced circulation system is arranged below the transmission mechanism 8, the stirring shaft 9 is provided with a feeding sleeve 16 at a position between the sieve plate 10 and a forced circulation system, the side surface of the feeding sleeve 16 is provided with a feeding pre-mineralization pipe 22 extending to the outer side of the flotation tank 3, the feeding pre-mineralization pipe 22 is provided with a second microbubble generator 21 forming a 45 DEG angle with the feeding direction, a rapid floating cover plate 11 is arranged below the feeding sleeve 16, the rapid floating cover plate 11 is arranged at the middle position of the flotation tank 3, a centrifugal dispersing wheel 12 is arranged below the rapid floating cover plate 11 on the stirring shaft 9, the forced circulation system comprises an upper guide cylinder 17, a propelling wheel 13, a dispersing stator, a centrifugal mineralization wheel 19 and a lower guide device arranged below the centrifugal mineralization wheel and fixed at the bottom of the tank, the dispersing stator is matched with the lower guide device, the propelling wheel 13 is arranged in the upper guide cylinder 17, the center of the propelling wheel 13 is penetrated by the stirring shaft 9, and the lower guide device comprises a guide inverted cone 5, the device comprises a discharging bottom plate 23 and a lower guide cylinder 6 arranged in the middle of the discharging bottom plate, wherein the bottom plate center and the periphery of the discharging bottom plate 23 are provided with holes, the discharging bottom plate 23 is arranged in an inverted ladder, the lower guide cylinder 6 is arranged below the discharging bottom plate 23, a flow guiding inverted cone 5 is arranged above the discharging bottom plate 23, a centrifugal mineralization wheel 19 is arranged in the center of the flow guiding inverted cone 5, the dispersion stator comprises a plurality of rectangular ore pulp dispersion plates 14 and a mineralization cover plate 18, the plurality of rectangular ore pulp dispersion plates 14 are uniformly distributed and vertically arranged between the inner diameter of the flow guiding inverted cone 5 and the centrifugal mineralization wheel 19 along the radial direction, the circular mineralization cover plate 18 is arranged above the plurality of rectangular ore pulp dispersion plates 14, and a stirring shaft 9 penetrates through the mineralization cover plate 18 to be finally connected with the centrifugal mineralization wheel. The rapid floating system is arranged above the forced circulation system; the upper guide cylinder 17 is of an open inverted cone structure, and the propulsion wheel 17 is arranged in the upper guide cylinder 17 and is fixed on the stirring shaft 9; the discharging bottom plate 23 is arranged at the conical position at the bottom of the tank body and is close to the lower part of the ore pulp dispersing plate 14, and ore pulp discharging holes are formed between the discharging bottom plate 23 and the tank wall of the inverted ladder; the first microbubble generator 7 and the second microbubble generator 21 are provided with microporous ceramics therein.
A forced circulation rapid flotation separation method comprises the following steps:
a. firstly, closing a tailing discharging pipe 20, feeding the pulp subjected to pulp mixing into a feeding pre-mineralization pipe 22 through a feeding pre-mineralization pipe inlet A, and feeding compressed air into the feeding pre-mineralization pipe through a second microbubble generator inlet B through a second microbubble generator 21 to mix the pulp subjected to pre-mineralization;
b. the mixed and pre-mineralized ore pulp enters the feeding sleeve 16, the ore pulp in the feeding sleeve 16 is fed into the flotation tank 3 under the action of the rotating centrifugal dispersing wheel 12, the ore pulp enters the lower half part of the reverse bench through the holes and gaps of the discharging bottom plate 23, compressed air is fed into the gas dispersing box 24 through the first microbubble generator inlet C of the first microbubble generator 7 to be mixed with the ore pulp, the mixed ore pulp enters the centrifugal mineralizing wheel 19 from the lower guide cylinder 6 and generates upward buoyancy in the continuously rising ore pulp liquid level along the rectangular ore pulp dispersing plate 14 and the guide reverse cone 5 under the action of the centrifugal mineralizing wheel 19, when the ore pulp liquid level rises above the fast floating cover plate 11, the fast floating cover plate 11 starts to play a role of enhancing the suction and sip force generated when the centrifugal dispersing wheel rotates, thereby generating suction force to the fed ore pulp, enhancing the circulation of the ore pulp and mineralization of mineral particles, opening a tailing discharging pipe 20 when the liquid level of the ore pulp exceeds the sieve plate 10 by about 200mm from the overflow surface of the overflow trough, forming quick-floating foam through a quick-floating cover plate 11 and a centrifugal dispersing wheel 12, mineralizing and quickly rising the easily-floating particles in the mixed pre-mineralized ore pulp along with the quick-floating foam, discharging the easily-floating particles from an ore concentrate discharging pipe outlet E of an ore concentrate discharging pipe 2 on a foam trough 1 after rectifying by the sieve plate 10, and feeding medium-floating particles into a centrifugal mineralizing wheel 19 under the action of a pushing wheel 13 through an upper guide cylinder 17 of a medium-ore forced circulation system so as to further increase the circulation of the ore pulp;
c. the floating particles in the flotation tank body 3 flow out through a discharge hole in the central position of a discharge bottom plate on the discharge bottom plate 23, one part of the particles are discharged from a tailing discharge pipe outlet D of a tailing discharge pipe 20 at the bottom of the tank body, and the other part of the particles are sucked into the centrifugal mineralization wheel 19 through a lower guide cylinder 6 in the middle of the discharge bottom plate 23 under the centrifugal suction effect of the centrifugal mineralization wheel 19, at the moment, a space is formed among the rapid floating cover plate 11, the discharge bottom plate 23 and the centrifugal mineralization wheel 19 and between the mineralization cover plate 18 and the discharge bottom plate 23, and the particles are dispersed into the flotation tank body through centrifugal force generated when the centrifugal mineralization wheel 19 rotates;
d. compressed air is sent into the gas dispersion tank 24 through the first microbubble generator inlet C of the first microbubble generator 7, and is sucked into a space formed between the mineralized cover plate 18 and the discharge bottom plate 23 together with ore pulp through the lower guide cylinder 6 in the middle of the discharge bottom plate 23;
e. the collision between the particles and the bubbles is strengthened under the action of the centrifugal mineralizing wheels 19 of the medium floatable particles and the hard floatable particles, and the medium floatable and hard floatable particles are dispersed into the tank body by the rectangular ore pulp dispersing plates 14 and the flow guiding inverted cone 5 on the stator, so that the medium floatable and hard floatable mineralized particles are lifted and floated, and the medium floatable and hard floatable particles and the fast floatable foam are discharged out of the tank body; the particles which are not mineralized are circularly separated in the tank body for a plurality of times, and tailings are discharged from an outlet D of a tailings discharging pipe 20 at the bottom of the tank body.
Claims (3)
1. A forced circulation quick flotation separation device is characterized in that: the device comprises a transmission mechanism (8), a flotation tank body (3), a quick floating system and a forced circulation system;
the flotation tank body (3) comprises a cylinder, a reverse bench of a funnel structure is arranged below the cylinder, a foam tank (1) is arranged at the top of the cylinder, a concentrate discharging pipe (2) is arranged at the lowest part of the foam tank (1), a sieve plate (10) is arranged at the position of the foam tank (1) in the cylinder, a forced circulation system is arranged in the reverse bench of the flotation tank body (3), a plurality of guide plates (4) are vertically arranged in the side wall of the flotation tank body (3) between the forced circulation system and the sieve plate (10), a gas dispersion tank (24) is arranged at the bottom of the reverse bench of the flotation tank body (3), a first microbubble generator (7) forming an angle of 45 DEG with the vertical direction is arranged on the side wall of the gas dispersion tank (24), a tailing discharging pipe (20) is arranged at the bottom of the gas dispersion tank (24), a transmission mechanism (8) is arranged at the top of the flotation tank body (3), the transmission mechanism (8) is fixed on the flotation tank body (3) through a supporting frame (15), a stirring shaft (9) extending into the flotation tank body (3) and connected with the forced circulation system is arranged below the transmission mechanism (8), a feeding sleeve (16) is arranged between the forced circulation system and the forced circulation system, a feeding sleeve (16) is arranged on the side surface of the flotation tank body (3), and the feeding sleeve (16) extends to the outside of the mineralizing system, the feeding pre-mineralization pipe (22) is provided with a second microbubble generator (21) forming an angle of 45 degrees with the feeding direction, a quick floating cover plate (11) is arranged below a feeding sleeve (16), the quick floating cover plate (11) is arranged at the middle position of a flotation tank body (3), a centrifugal dispersion wheel (12) is arranged on a stirring shaft (9) below the quick floating cover plate (11), the forced circulation system comprises an upper guide cylinder (17), a propelling wheel (13), a dispersion stator, a centrifugal mineralization wheel (19) and a lower guide device arranged below the centrifugal mineralization wheel and fixed at the bottom of the tank body, the dispersion stator is matched with the lower guide device, the propelling wheel (13) is arranged in the upper guide cylinder (17), the center of the propelling wheel (13) is penetrated by the stirring shaft (9), the lower guide device comprises a guide inverted cone (5), a discharging bottom plate (23) and a lower guide cylinder (6) arranged at the middle part of the discharging bottom plate, wherein the bottom plate center and the periphery of the discharging bottom plate (23) are provided with holes, the discharging bottom plate (23) is arranged in an inverted trapezoid table, the lower guide cylinder (6) is arranged below the discharging bottom plate (23) and is provided with a plurality of guide cones (14) and the guide cones (18) are arranged above the hollow guide cones, wherein a plurality of rectangular ore pulp dispersing plates (14) are uniformly distributed and vertically arranged between the inner diameter of the flow guiding inverted cone (5) and the centrifugal mineralization wheel (19) along the radial direction, a round mineralization cover plate (18) is arranged above the plurality of rectangular ore pulp dispersing plates (14), and a stirring shaft (9) passes through the mineralization cover plate (18) to be finally connected with the centrifugal mineralization wheel.
2. The forced circulation flash flotation separation device of claim 1, wherein: the rapid floating system is arranged above the forced circulation system; the upper guide cylinder (17) is of an open inverted cone structure, and the propulsion wheel (13) is arranged in the upper guide cylinder (17) and is fixed on the stirring shaft (9); the discharging bottom plate (23) is arranged at the conical position at the bottom of the tank body and is close to the lower part of the ore pulp dispersing plate (14), and ore pulp discharging holes are formed between the discharging bottom plate (23) and the tank wall of the inverted ladder table; microporous ceramics are arranged in the first microbubble generator (7) and the second microbubble generator (21).
3. A forced circulation flash flotation separation method using the forced circulation flash flotation separation apparatus of claim 1, comprising the steps of:
a. firstly, closing a tailing discharging pipe (20), feeding the pulp after pulp mixing into a feeding pre-mineralization pipe (22) through a feeding pre-mineralization pipe inlet (A), and feeding compressed air into the feeding pre-mineralization pipe through a second microbubble generator inlet (B) through a second microbubble generator (21) to mix the pulp pre-mineralized with the pulp;
b. the mixed and pre-mineralized ore pulp enters a feeding sleeve (16), the ore pulp in the feeding sleeve (16) is fed into a flotation tank body (3) under the action of a rotating centrifugal dispersion wheel (12), the ore pulp enters the lower half part of a reverse bench through a hole and a gap of a discharging bottom plate (23), compressed air is fed into a gas dispersion tank (24) through a first micro-bubble generator inlet (C) of a first micro-bubble generator (7) to be mixed with the ore pulp, the mixed ore pulp enters a centrifugal mineralization wheel (19) from a lower guide cylinder (6) and generates upward buoyancy in the non-stop rising ore pulp liquid level along a rectangular ore pulp dispersion plate (14) and a guide reverse cone (5) under the action of the centrifugal mineralization wheel (19), when the ore pulp liquid level rises above a fast floating cover plate (11), suction force generated when the centrifugal dispersion wheel rotates is enhanced, the enhanced circulation and mineralization of mineral particles are generated for the fed ore pulp, when the ore pulp liquid level exceeds a tailing overflow surface of an overflow groove (10), the ore pulp is formed through a fast floating cover plate (10) and a fast floating guide plate (2) and a discharge chute (10) after the rapid floating guide plate (2) is opened, and the ore pulp is discharged from a fast floating cover plate (10) and a discharge chute (2) after the foam concentrate is formed, medium floatable particles are fed into a centrifugal mineralizing wheel (19) under the action of a propelling wheel (13) through an upper guide cylinder (17) of a middling forced circulation system so as to further increase the circulation quantity of ore pulp;
c. the floating-resistant particles in the flotation tank body (3) flow out through a discharge hole in the central position of a discharge bottom plate on the discharge bottom plate (23), one part of particles are discharged from a tailing discharge pipe outlet (D) of a tailing discharge pipe (20) at the bottom of the tank body, and the other part of particles are sucked into the centrifugal mineralization wheel (19) through a lower guide cylinder (6) in the middle of the discharge bottom plate (23) under the centrifugal suction effect of the centrifugal mineralization wheel (19), at the moment, a space is formed between a mineralization cover plate (18) and the discharge bottom plate (23) by the rapid floating cover plate (11), the discharge bottom plate (23) and the centrifugal mineralization wheel (19), and are dispersed into the flotation tank body through centrifugal force generated when the centrifugal mineralization wheel (19) rotates;
d. compressed air is sent into a gas dispersion box (24) through a first microbubble generator inlet (C) of a first microbubble generator (7) and is sucked into a space formed between a mineralization cover plate (18) and a discharge bottom plate (23) together with ore pulp through a lower guide cylinder (6) in the middle of the discharge bottom plate (23);
e. the collision between the particles and the bubbles is enhanced under the action of a centrifugal mineralizing wheel (19) for the medium floatable particles and the hard floatable particles, and the medium floatable and hard floatable particles are dispersed into the tank body by a rectangular ore pulp dispersing plate (14) and a flow guiding inverted cone (5) on the stator, so that the medium floatable and hard floatable mineralized particles are lifted and floated, and are discharged out of the tank body together with the fast floatable foam; the particles which are not mineralized are circularly separated in the tank body for a plurality of times, and tailings are discharged from an outlet (D) of a tailings discharging pipe (20) at the bottom of the tank body.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354952.6A CN109939838B (en) | 2019-04-29 | 2019-04-29 | Forced circulation rapid flotation separation device and method |
| CA3100768A CA3100768C (en) | 2019-04-29 | 2019-10-08 | Device and method for forced circulation fast floatation separation |
| PCT/CN2019/109883 WO2020220585A1 (en) | 2019-04-29 | 2019-10-08 | Forced-circulating quick floatation separation apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910354952.6A CN109939838B (en) | 2019-04-29 | 2019-04-29 | Forced circulation rapid flotation separation device and method |
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| CN109939838A CN109939838A (en) | 2019-06-28 |
| CN109939838B true CN109939838B (en) | 2023-06-20 |
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| CN201910354952.6A Active CN109939838B (en) | 2019-04-29 | 2019-04-29 | Forced circulation rapid flotation separation device and method |
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| CN (1) | CN109939838B (en) |
| CA (1) | CA3100768C (en) |
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| CN109939838B (en) * | 2019-04-29 | 2023-06-20 | 中国矿业大学 | Forced circulation rapid flotation separation device and method |
| CN110639708A (en) * | 2019-10-09 | 2020-01-03 | 南京工业大学 | Fine apatite flotation method and system based on multi-channel ceramic membrane distributor |
| CN115007328B (en) * | 2022-05-19 | 2023-07-25 | 新疆鑫旺矿业股份有限公司 | Flotation device for mineral separation test |
| CN115161474B (en) * | 2022-08-05 | 2024-03-08 | 核工业北京化工冶金研究院 | Uranium ore leaching equipment and method |
| CN116532246B (en) * | 2023-06-26 | 2023-11-14 | 内蒙古恒河科技有限公司 | Coal briquette circulation flotation equipment with froth flow guiding and separating function |
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| CA3100768C (en) | 2023-08-15 |
| WO2020220585A1 (en) | 2020-11-05 |
| CA3100768A1 (en) | 2020-11-05 |
| CN109939838A (en) | 2019-06-28 |
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