CA3100767C - Device and method for fluid synergistic enhanced floatation separation - Google Patents
Device and method for fluid synergistic enhanced floatation separation Download PDFInfo
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- CA3100767C CA3100767C CA3100767A CA3100767A CA3100767C CA 3100767 C CA3100767 C CA 3100767C CA 3100767 A CA3100767 A CA 3100767A CA 3100767 A CA3100767 A CA 3100767A CA 3100767 C CA3100767 C CA 3100767C
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- 238000000926 separation method Methods 0.000 title claims abstract description 99
- 239000012530 fluid Substances 0.000 title claims abstract description 21
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 14
- 230000033558 biomineral tissue development Effects 0.000 claims abstract description 102
- 239000002245 particle Substances 0.000 claims abstract description 73
- 239000006260 foam Substances 0.000 claims abstract description 36
- 239000012141 concentrate Substances 0.000 claims abstract description 32
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 24
- 239000011707 mineral Substances 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 14
- 230000001965 increasing effect Effects 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 239000011362 coarse particle Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 230000001143 conditioned effect Effects 0.000 description 3
- 241001400238 Dictyostelium medium Species 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B03D1/02—Froth-flotation processes
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Disclosed is a device and method for fluid synergistic enhanced floatation separation for floatation of fine mineral particles or coal particles. The device includes a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser.
After feeding pulp into the floatation separation releaser, easy-to-float particles rise rapidly and are discharged from a concentrate discharge tube on a foam tank above the floatation separation releaser;
medium floatable particles, after being sorted, float into the foam tank and are discharged from the concentrate discharge tube; difficult-to-float particles enter a middling-tailing separator through a channel between a tapered flow director and a wall of the floatation separation releaser, and divided into two parts: one discharged as the tailing from the floatation separation releaser; and the other fed into the turbulent flow mineralization generator via the circulating pump, mineralized and again fed into the floatation separation releaser to perform cyclic sorting.
After feeding pulp into the floatation separation releaser, easy-to-float particles rise rapidly and are discharged from a concentrate discharge tube on a foam tank above the floatation separation releaser;
medium floatable particles, after being sorted, float into the foam tank and are discharged from the concentrate discharge tube; difficult-to-float particles enter a middling-tailing separator through a channel between a tapered flow director and a wall of the floatation separation releaser, and divided into two parts: one discharged as the tailing from the floatation separation releaser; and the other fed into the turbulent flow mineralization generator via the circulating pump, mineralized and again fed into the floatation separation releaser to perform cyclic sorting.
Description
Device and Method for Fluid Synergistic Enhanced Floatation Separation Technical Field The invention relates to a device and method for fluid synergistic enhanced floatation separation, particularly applicable for use as a device and method for fluid synergistic enhanced floatation separation for floatation of fine mineral particles or coal particles.
Background Floatation is a method for sorting according to physical and chemical properties on the surface and floatability of different mineral particles, wherein the mineralization is the most critical procedure, involving three main processes of collision, adhesion and desorption.
Among them, collision is the basic premise of floatation and mineralization, which is mainly controlled by fluid dynamics. For fine particles, in order to break through streamlines and collide with bubbles efficiently, it is necessary to build a reasonable fluid environment, such as using high turbulence impinging streams and cross flows to increase the collision probability of fine particles with bubbles, thereby strengthening mineralization effects of fine particles. In addition, for floatation of fine mineral particles, gangue minerals are more likely to be entrained into floatation foams, thereby affecting the quality of concentrate products.
Although foam cleaning water has a certain cleaning effect, the effect is not ideal. Moreover, it is difficult to design a reasonable flushing structure using foam cleaning water and to optimize and control the cleaning process.
Summary Technical Problems: to solve the above technical problems, the invention provides a device and method for fluid synergistic enhanced floatation separation having a simple structure and remarkable effects and capable of effectively mineralizing fine mineral particles.
Technical Solutions: in order to achieve the above technical objectives, the invention provides a fluid synergistic enhanced floatation separation device including a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser; the - -Date Recue/Date Received 2020-11-18 turbulent flow mineralization generator being provided above the floatation separation releaser; the circulating pump connecting an outlet of the floatation separation releaser with the turbulent flow mineralization generator;
the turbulent flow mineralization generator including a cylinder; a funnel-shaped truncated cone being arranged below the cylinder, and a pulp distribution tube is arranged side by side around the cylinder; a plurality of impinging stream mineralization tubes and a plurality of cross flow mineralization tubes being transversely arranged between the pulp distribution tube and the cylinder; the cross flow mineralization tubes being tangentially connected to the cylinder, and the impinging stream mineralization tubes being radially connected to the cylinder; both the cross flow mineralization tube and the impinging stream mineralization tube being provided with a micro-bubble generator; a pulp jet tube being arranged below the truncated cone;
the floatation separation releaser being a cylindrical structure; a lower portion of the floatation separation releaser being narrowed to form an inverted truncated cone structure; a tailing tube being arranged at a center of a bottom of the inverted truncated cone structure; a middling tube being arranged at a side of the tailing tube; a foam tank being arranged above the cylindrical structure; a concentrate tube being arranged at a bottom of the foam tank; a rectangular ultrasonic vibration plate being vertically arranged inside the cylindrical structure below the foam tank; an annular feed distributor being arranged below the ultrasonic vibration plate; the feed distributor being provided with a plurality of sprayers; a sieve plate being arranged inside the cylindrical structure below the annular feed distributor;
the inverted truncated cone structure at a bottom of the cylindrical structure being provided with a tapered flow director including a counter-attack plate; a gap being left between bottoms of the counter-attack plate and the inverted truncated cone structure; the inverted truncated cone structure being provided with an inverted cone whose profile matches with the inverted truncated cone structure; a pulp flow channel being arranged between the inverted cone and the inverted truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates being arranged inside the inverted cone; the pulp jet tube extending from the foam tank on a top of the floatation separation releaser into the inside of the cylindrical structure and
Background Floatation is a method for sorting according to physical and chemical properties on the surface and floatability of different mineral particles, wherein the mineralization is the most critical procedure, involving three main processes of collision, adhesion and desorption.
Among them, collision is the basic premise of floatation and mineralization, which is mainly controlled by fluid dynamics. For fine particles, in order to break through streamlines and collide with bubbles efficiently, it is necessary to build a reasonable fluid environment, such as using high turbulence impinging streams and cross flows to increase the collision probability of fine particles with bubbles, thereby strengthening mineralization effects of fine particles. In addition, for floatation of fine mineral particles, gangue minerals are more likely to be entrained into floatation foams, thereby affecting the quality of concentrate products.
Although foam cleaning water has a certain cleaning effect, the effect is not ideal. Moreover, it is difficult to design a reasonable flushing structure using foam cleaning water and to optimize and control the cleaning process.
Summary Technical Problems: to solve the above technical problems, the invention provides a device and method for fluid synergistic enhanced floatation separation having a simple structure and remarkable effects and capable of effectively mineralizing fine mineral particles.
Technical Solutions: in order to achieve the above technical objectives, the invention provides a fluid synergistic enhanced floatation separation device including a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser; the - -Date Recue/Date Received 2020-11-18 turbulent flow mineralization generator being provided above the floatation separation releaser; the circulating pump connecting an outlet of the floatation separation releaser with the turbulent flow mineralization generator;
the turbulent flow mineralization generator including a cylinder; a funnel-shaped truncated cone being arranged below the cylinder, and a pulp distribution tube is arranged side by side around the cylinder; a plurality of impinging stream mineralization tubes and a plurality of cross flow mineralization tubes being transversely arranged between the pulp distribution tube and the cylinder; the cross flow mineralization tubes being tangentially connected to the cylinder, and the impinging stream mineralization tubes being radially connected to the cylinder; both the cross flow mineralization tube and the impinging stream mineralization tube being provided with a micro-bubble generator; a pulp jet tube being arranged below the truncated cone;
the floatation separation releaser being a cylindrical structure; a lower portion of the floatation separation releaser being narrowed to form an inverted truncated cone structure; a tailing tube being arranged at a center of a bottom of the inverted truncated cone structure; a middling tube being arranged at a side of the tailing tube; a foam tank being arranged above the cylindrical structure; a concentrate tube being arranged at a bottom of the foam tank; a rectangular ultrasonic vibration plate being vertically arranged inside the cylindrical structure below the foam tank; an annular feed distributor being arranged below the ultrasonic vibration plate; the feed distributor being provided with a plurality of sprayers; a sieve plate being arranged inside the cylindrical structure below the annular feed distributor;
the inverted truncated cone structure at a bottom of the cylindrical structure being provided with a tapered flow director including a counter-attack plate; a gap being left between bottoms of the counter-attack plate and the inverted truncated cone structure; the inverted truncated cone structure being provided with an inverted cone whose profile matches with the inverted truncated cone structure; a pulp flow channel being arranged between the inverted cone and the inverted truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates being arranged inside the inverted cone; the pulp jet tube extending from the foam tank on a top of the floatation separation releaser into the inside of the cylindrical structure and
- 2 -Date Recue/Date Received 2020-11-18 passing through the ultrasonic vibration plate, the feed distributor and the sieve plate until reaching a space among the plurality of flow directing vertical plates; a terminal end of the pulp jet tube having a horn shape;
the middling tube being connected to an inlet of the circulating pump, and an outlet of the circulating pump being connected to the pulp distribution tube.
Both the impinging stream mineralization tube and the cross flow mineralization tube are in the form of a venturi tube; the impinging stream mineralization tubes and the cross flow mineralization tubes are alternatively arranged at intervals; the adjacent cross flow mineralization tube are tangentially connected to the cylinder in opposite directions; a prismatic turbulence flow enhanced generator is arranged on an inner wall of the pulp jet tube.
A fluid synergistic enhanced floatation separation method includes the following steps:
a. first closing the tailing tube, feeding a conditioned original pulp from a feed distributor inlet into the feed distributor, and spraying the original pulp into the floatation separation releaser through the sprayers of the feed distributor; the original pulp is diffused by the sieve plate under the action of gravity and fed into the tapered flow director, flows into the middling tube through the pulp flow channel between the tapered flow director and a wall of the floatation separation releaser, and is fed into the pulp distribution tube via the circulating pump;
b. feeding the pulp in the pulp distribution tube into the cylinder through the impinging stream mineralization tubes and the cross flow mineralization tubes to generate swirling flows in different directions of positive and negative directions in the cylinder, mixing compressed air into the pulp by the micro-bubble generator to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel between the tapered flow director and the wall of the floatation separation releaser from a gap of the tapered flow director and finally enters into a middling-tailing separator; opening the
the middling tube being connected to an inlet of the circulating pump, and an outlet of the circulating pump being connected to the pulp distribution tube.
Both the impinging stream mineralization tube and the cross flow mineralization tube are in the form of a venturi tube; the impinging stream mineralization tubes and the cross flow mineralization tubes are alternatively arranged at intervals; the adjacent cross flow mineralization tube are tangentially connected to the cylinder in opposite directions; a prismatic turbulence flow enhanced generator is arranged on an inner wall of the pulp jet tube.
A fluid synergistic enhanced floatation separation method includes the following steps:
a. first closing the tailing tube, feeding a conditioned original pulp from a feed distributor inlet into the feed distributor, and spraying the original pulp into the floatation separation releaser through the sprayers of the feed distributor; the original pulp is diffused by the sieve plate under the action of gravity and fed into the tapered flow director, flows into the middling tube through the pulp flow channel between the tapered flow director and a wall of the floatation separation releaser, and is fed into the pulp distribution tube via the circulating pump;
b. feeding the pulp in the pulp distribution tube into the cylinder through the impinging stream mineralization tubes and the cross flow mineralization tubes to generate swirling flows in different directions of positive and negative directions in the cylinder, mixing compressed air into the pulp by the micro-bubble generator to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel between the tapered flow director and the wall of the floatation separation releaser from a gap of the tapered flow director and finally enters into a middling-tailing separator; opening the
- 3 -Date Recue/Date Received 2020-11-18 tailing tube and discharging a part of the pulp that enters into the middling-tailing separator as the tailing from the floatation separation releaser through a tailing tube outlet of the tailing tube; feeding the other part of the pulp as the middling into the circulating pump through the middling tube for further circulation, so as to perform cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
part of the pulp carrying easy-to-float particles is adhered to by air bubbles and facilitates increasing rising speeds of mineralized air bubbles under the action of the counter-attack plate in the tapered flow director and the flow directing vertical plates; the easy-to-float particles float up with air bubbles and undergo filtering when passing through the sieve plate; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser; remaining particles are left inside the floatation separation releaser along with the pulp;
c. the easy-to-float particles in the pulp rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the easy-to-float particles from the concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser;
d. medium floatable particles in the pulp, after being rectified by the sieve plate in the floatation separation releaser, facilitates preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the medium floatable particles from the concentrate tube on the foam tank above the floatation separation releaser.
The compressed air is respectively sent to the impinging stream mineralization tubes and the cross flow mineralization tubes through the micro-bubble generator, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, thereby ensuring subsequent floatation separation.
part of the pulp carrying easy-to-float particles is adhered to by air bubbles and facilitates increasing rising speeds of mineralized air bubbles under the action of the counter-attack plate in the tapered flow director and the flow directing vertical plates; the easy-to-float particles float up with air bubbles and undergo filtering when passing through the sieve plate; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser; remaining particles are left inside the floatation separation releaser along with the pulp;
c. the easy-to-float particles in the pulp rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the easy-to-float particles from the concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser;
d. medium floatable particles in the pulp, after being rectified by the sieve plate in the floatation separation releaser, facilitates preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic vibration plate, discharging the medium floatable particles from the concentrate tube on the foam tank above the floatation separation releaser.
The compressed air is respectively sent to the impinging stream mineralization tubes and the cross flow mineralization tubes through the micro-bubble generator, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, thereby ensuring subsequent floatation separation.
- 4 -Date Recue/Date Received 2020-11-18 In accordance with an aspect of an embodiment, there is provided a fluid synergistic enhanced floatation separation device comprises a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser; the turbulent flow mineralization generator being provided above the floatation separation releaser; the circulating pump connecting an outlet of the floatation separation releaser with the turbulent flow mineralization generator; the turbulent flow mineralization generator comprising a cylinder; a truncated cone being arranged below the cylinder, and a plurality of pulp distribution tubes are spaced evenly around the cylinder; a plurality of impact flow mineralization tubes and a plurality of cross flow mineralization tubes being transversely arranged between the pulp distribution tube and the cylinder; the cross flow mineralization tubes being connected to the cylinder at a tangent, and the impact flow mineralization tubes being radially connected to the cylinder; each of the cross flow mineralization tubes and the impact flow mineralization tubes being provided with a micro-bubble generator; a pulp jet tube being arranged below the truncated cone; the floatation separation releaser being a cylinder; a lower portion of the floatation separation releaser being narrowed to foim an truncated cone structure; a tailing tube being arranged at a center of a bottom of the truncated cone structure; a middling tube being arranged at a side of the tailing tube; a foam tank being arranged above the cylinder; a concentrate tube being arranged at a bottom of the foam tank; a rectangular ultrasonic generator plate being arranged inside the cylinder below the foam tank; an annular feed distributor, including a feed distributor inlet, being arranged below the ultrasonic generator plate; the feed distributor being provided with a plurality of sprayers; a sieve plate being arranged inside the cylinder below the annular feed distributor; the truncated cone structure at a bottom of the cylinder being provided with a tapered flow director comprising a reverse buffer plate; a gap being left between the reverse buffer plate and the bottom of the truncated cone structure; the truncated cone structure being provided with an cone whose profile matches with the truncated cone structure; a pulp flow channel being arranged between the
- 5 -Date Recue/Date Received 2022-05-17 cone and the truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates being arranged inside the cone; the pulp jet tube extending through the foam tank on a top of the floatation separation releaser into the inside of the cylinder and passing through the ultrasonic generator plate, the feed distributor and the sieve plate until reaching a space among the plurality of flow directing vertical plates; the diameter of the pulp jet tube increases at the terminal end; the middling tube being connected to an inlet of the circulating pump, and an outlet of the circulating pump being connected to the pulp distribution tube.
In accordance with another aspect of an embodiment, there is provided a fluid synergistic enhanced floatation separation method using the fluid synergistic enhanced floatation separation device comprises the following steps:
a. first closing a tailing tube outlet of the tailing tube, feeding an initial pulp from a feed distributor inlet into the feed distributor, and spraying the initial pulp into the floatation separation releaser through the sprayers of the feed distributor; the initial pulp being diffused by the sieve plate under the action of gravity and fed into the tapered flow director, flows into the middling tube through the pulp flow channel, and is fed into the pulp distribution tubes via the circulating pump;
b. feeding the pulp in the pulp distribution tubes into the cylinder through the impact flow mineralization tubes and the cross flow mineralization tubes, mixing compressed air into the pulp by the micro-bubble generators to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel and enters into a middling-tailing separator; opening the tailing tube and discharging a part of the pulp that enters into the middling-tailing separator through the tailing tube outlet of the tailing tube; feeding the other part of the pulp as the middling into the circulating pump through the middling tube for further circulation, performing cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
-5a-Date Recue/Date Received 2022-05-17 easy-to-float particles in the pulp are adhered to by air bubbles, and the reverse buffer plate in the tapered flow director and the flow directing vertical plates facilitate increasing rising speeds of mineralized air bubbles, caused by the pulp deflecting off the reverse buffer plate; the easy-to-float particles rapidly float up with air bubbles and undergo filtering when passing through the sieve plate; filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser;
c. medium floatable particles in the pulp, after being rectified by the sieve plate in the floatation separation releaser, preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser;
filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the medium floatable particles from the concentrate tube on the foam tank above the floatation separation releaser.
Beneficial Effects: the device and method for fluid synergistic enhanced floatation separation integrate high-speed impinging streams, cross flows, reverse flows and ultrasonic oscillating flows. The impinging streams and cross flows generated by the turbulent flow mineralization reactor facilitates improving mineralization effects of difficult-to-float particles.
The reverse flows generated by the floatation separation releaser causes synergistic effects of secondary sorting, enhanced suspension of coarse particles and increased floatation bubble load. The oscillating flows generated by the rectangular ultrasonic vibration plate arranged in foam tank above the floatation separation releaser further strengthens the cleaning effect of the impurity mineral particles entrained in the foam and improves the concentrate grade.
In view of the above problems, the invention provides a method for integrating high-speed impinging streams, cross flows, reverse flows and ultrasonic oscillating flows to enhance efficiency of floatation and separation of minerals and improve the concentrate grade.
-5h-Date Recue/Date Received 2022-05-17 The probability of collision of difficult-to-float particles with bubbles is increased by the impinging streams and cross flows generated by the turbulent flow mineralization reactor, so that the effects of mixing and mineralization of fine particles is enhanced.
Through the reverse flows generated by the reverse flow floatator, the secondary sorting of mineral particles is enhanced, and the synergistic effects of suspension of coarse particles and increased floatation bubble load are improved. The oscillating flows generated by the rectangular ultrasonic vibration plate arranged in foam tank above the floatation separation releaser further strengthens the cleaning effect of the impurity mineral particles entrained in the foam and improves the concentrate grade. Through the implementation of the above device and method, the mineral floatation separation process is enhanced, and the recovery rate of target minerals and the product quality are improved.
Brief Description of Drawings FIG. 1 is a schematic structural diagram of a fluid synergistic enhanced floatation separation device according to the invention.
Wherein, 1-circulating pump, 2-turbulent flow mineralization generator, 3-foam tank, 4-feed distributor, 5-floatation separation releaser, 6-pulp jet tube, 7-ultrasonic generator plate, -5c-Date Recue/Date Received 2022-05-17 8-sieve plate, 9-flow directing vertical plate, 10-middling tube, 11-pulp distribution tube, 12-micro-bubble generator, 13-impact flow mineralization tube, 14-cross flow mineralization tube, 15-turbulence flow enhanced generator, 16-concentrate tube, 17-inverted cone, 18-reverse buffer plate, 19-tailing tube, A-feed distributor inlet, B-tailing tube outlet, C-concentrate tube outlet.
Detailed Description The embodiments of the invention will be further described in detail below in conjunction with the accompanying drawings:
As shown in FIG. 1, the invention provides a fluid synergistic enhanced floatation separation device including a circulating pump 1, a turbulent flow mineralization generator 2 and a floatation separation releaser 5; the turbulent flow mineralization generator 2 being provided above the floatation separation releaser 5; the circulating pump 1 connecting an outlet of the floatation separation releaser 5 with the turbulent flow mineralization generator 2;
the turbulent flow mineralization generator 2 including a cylinder; a truncated cone being arranged below the cylinder, and a plurality of pulp distribution tubes (11) are spaced evenly around the cylinder; a plurality of impact flow mineralization tubes 13 and a plurality of cross flow mineralization tubes 14 being transversely arranged between the pulp distribution tubes 11 and the cylinder; the cross flow mineralization tubes 14 being tangentially connected to the cylinder, and the impact flow mineralization tubes 13 being radially connected to the cylinder;
each of the cross flow mineralization tubes 14 and the impact flow mineralization tubes 13 being provided with a micro-bubble generator 12; a pulp jet tube 6 being arranged below the truncated cone; both the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 are in the form of a venturi tube; the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 are alternatively arranged at intervals; the adjacent cross flow mineralization tubes 14 are tangentially connected to the cylinder in opposite directions; a prismatic turbulence flow enhanced generator 15 is arranged on an inner wall of the pulp jet tube 6;
In accordance with another aspect of an embodiment, there is provided a fluid synergistic enhanced floatation separation method using the fluid synergistic enhanced floatation separation device comprises the following steps:
a. first closing a tailing tube outlet of the tailing tube, feeding an initial pulp from a feed distributor inlet into the feed distributor, and spraying the initial pulp into the floatation separation releaser through the sprayers of the feed distributor; the initial pulp being diffused by the sieve plate under the action of gravity and fed into the tapered flow director, flows into the middling tube through the pulp flow channel, and is fed into the pulp distribution tubes via the circulating pump;
b. feeding the pulp in the pulp distribution tubes into the cylinder through the impact flow mineralization tubes and the cross flow mineralization tubes, mixing compressed air into the pulp by the micro-bubble generators to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel and enters into a middling-tailing separator; opening the tailing tube and discharging a part of the pulp that enters into the middling-tailing separator through the tailing tube outlet of the tailing tube; feeding the other part of the pulp as the middling into the circulating pump through the middling tube for further circulation, performing cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
-5a-Date Recue/Date Received 2022-05-17 easy-to-float particles in the pulp are adhered to by air bubbles, and the reverse buffer plate in the tapered flow director and the flow directing vertical plates facilitate increasing rising speeds of mineralized air bubbles, caused by the pulp deflecting off the reverse buffer plate; the easy-to-float particles rapidly float up with air bubbles and undergo filtering when passing through the sieve plate; filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube on the foam tank above the floatation separation releaser;
c. medium floatable particles in the pulp, after being rectified by the sieve plate in the floatation separation releaser, preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser;
filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the medium floatable particles from the concentrate tube on the foam tank above the floatation separation releaser.
Beneficial Effects: the device and method for fluid synergistic enhanced floatation separation integrate high-speed impinging streams, cross flows, reverse flows and ultrasonic oscillating flows. The impinging streams and cross flows generated by the turbulent flow mineralization reactor facilitates improving mineralization effects of difficult-to-float particles.
The reverse flows generated by the floatation separation releaser causes synergistic effects of secondary sorting, enhanced suspension of coarse particles and increased floatation bubble load. The oscillating flows generated by the rectangular ultrasonic vibration plate arranged in foam tank above the floatation separation releaser further strengthens the cleaning effect of the impurity mineral particles entrained in the foam and improves the concentrate grade.
In view of the above problems, the invention provides a method for integrating high-speed impinging streams, cross flows, reverse flows and ultrasonic oscillating flows to enhance efficiency of floatation and separation of minerals and improve the concentrate grade.
-5h-Date Recue/Date Received 2022-05-17 The probability of collision of difficult-to-float particles with bubbles is increased by the impinging streams and cross flows generated by the turbulent flow mineralization reactor, so that the effects of mixing and mineralization of fine particles is enhanced.
Through the reverse flows generated by the reverse flow floatator, the secondary sorting of mineral particles is enhanced, and the synergistic effects of suspension of coarse particles and increased floatation bubble load are improved. The oscillating flows generated by the rectangular ultrasonic vibration plate arranged in foam tank above the floatation separation releaser further strengthens the cleaning effect of the impurity mineral particles entrained in the foam and improves the concentrate grade. Through the implementation of the above device and method, the mineral floatation separation process is enhanced, and the recovery rate of target minerals and the product quality are improved.
Brief Description of Drawings FIG. 1 is a schematic structural diagram of a fluid synergistic enhanced floatation separation device according to the invention.
Wherein, 1-circulating pump, 2-turbulent flow mineralization generator, 3-foam tank, 4-feed distributor, 5-floatation separation releaser, 6-pulp jet tube, 7-ultrasonic generator plate, -5c-Date Recue/Date Received 2022-05-17 8-sieve plate, 9-flow directing vertical plate, 10-middling tube, 11-pulp distribution tube, 12-micro-bubble generator, 13-impact flow mineralization tube, 14-cross flow mineralization tube, 15-turbulence flow enhanced generator, 16-concentrate tube, 17-inverted cone, 18-reverse buffer plate, 19-tailing tube, A-feed distributor inlet, B-tailing tube outlet, C-concentrate tube outlet.
Detailed Description The embodiments of the invention will be further described in detail below in conjunction with the accompanying drawings:
As shown in FIG. 1, the invention provides a fluid synergistic enhanced floatation separation device including a circulating pump 1, a turbulent flow mineralization generator 2 and a floatation separation releaser 5; the turbulent flow mineralization generator 2 being provided above the floatation separation releaser 5; the circulating pump 1 connecting an outlet of the floatation separation releaser 5 with the turbulent flow mineralization generator 2;
the turbulent flow mineralization generator 2 including a cylinder; a truncated cone being arranged below the cylinder, and a plurality of pulp distribution tubes (11) are spaced evenly around the cylinder; a plurality of impact flow mineralization tubes 13 and a plurality of cross flow mineralization tubes 14 being transversely arranged between the pulp distribution tubes 11 and the cylinder; the cross flow mineralization tubes 14 being tangentially connected to the cylinder, and the impact flow mineralization tubes 13 being radially connected to the cylinder;
each of the cross flow mineralization tubes 14 and the impact flow mineralization tubes 13 being provided with a micro-bubble generator 12; a pulp jet tube 6 being arranged below the truncated cone; both the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 are in the form of a venturi tube; the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 are alternatively arranged at intervals; the adjacent cross flow mineralization tubes 14 are tangentially connected to the cylinder in opposite directions; a prismatic turbulence flow enhanced generator 15 is arranged on an inner wall of the pulp jet tube 6;
- 6 -Date Recue/Date Received 2022-05-17 the floatation separation releaser 5 being a cylindrical structure; a lower portion of the floatation separation releaser 5 being narrowed to form an inverted truncated cone structure; a tailing tube 19 being arranged at a center of a bottom of the inverted truncated cone structure;
a middling tube 10 being arranged at a side of the tailing tube 19; a foam tank 3 being arranged above the cylindrical structure; a concentrate tube 16 being arranged at a bottom of the foam tank 3; a rectangular ultrasonic generator plate 7 being vertically arranged inside the cylindrical structure below the foam tank 3; an annular feed distributor 4 being arranged below the ultrasonic generator plate 7; the feed distributor 4 being provided with a plurality of sprayers; a sieve plate 8 being arranged inside the cylindrical structure below the annular feed distributor 4; the inverted truncated cone structure at a bottom of the cylindrical structure being provided with a tapered flow director including a reverse buffer plate 18; a gap being left between bottoms of the reverse buffer plate 18 and the inverted truncated cone structure;
the inverted tnmcated cone structure being provided with an inverted cone 17 whose profile matches with the inverted truncated cone structure; a pulp flow channel being arranged between the inverted cone and the inverted truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates 9 being arranged inside the inverted cone 17; the pulp jet tube 6 extending through the foam tank 3 on a top of the floatation separation releaser into the inside of the cylindrical structure and passing through the ultrasonic generator plate
a middling tube 10 being arranged at a side of the tailing tube 19; a foam tank 3 being arranged above the cylindrical structure; a concentrate tube 16 being arranged at a bottom of the foam tank 3; a rectangular ultrasonic generator plate 7 being vertically arranged inside the cylindrical structure below the foam tank 3; an annular feed distributor 4 being arranged below the ultrasonic generator plate 7; the feed distributor 4 being provided with a plurality of sprayers; a sieve plate 8 being arranged inside the cylindrical structure below the annular feed distributor 4; the inverted truncated cone structure at a bottom of the cylindrical structure being provided with a tapered flow director including a reverse buffer plate 18; a gap being left between bottoms of the reverse buffer plate 18 and the inverted truncated cone structure;
the inverted tnmcated cone structure being provided with an inverted cone 17 whose profile matches with the inverted truncated cone structure; a pulp flow channel being arranged between the inverted cone and the inverted truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates 9 being arranged inside the inverted cone 17; the pulp jet tube 6 extending through the foam tank 3 on a top of the floatation separation releaser into the inside of the cylindrical structure and passing through the ultrasonic generator plate
7, the feed distributor 4 and the sieve plate 8 until reaching a space among the plurality of flow directing vertical plates 9; a terminal end of the pulp jet tube 6 having a horn shape;
the middling tube 10 being connected to an inlet of the circulating pump 1, and an outlet of the circulating pump 1 being connected to the pulp distribution tube 11.
A fluid synergistic enhanced floatation separation method includes the following steps:
a. first closing the tailing tube 19, feeding a conditioned original pulp from a feed distributor inlet A into the feed distributor 4, and spraying the original pulp into the floatation separation releaser 5 through the sprayers of the feed distributor 4; the original pulp is diffused by the sieve plate 8 under the action of gravity and fed into the tapered flow director, flows into the middling tube 10 through the pulp flow channel between the tapered flow Date Recue/Date Received 2022-05-17 director and a wall of the floatation separation releaser 5, and is fed into the pulp distribution tube 11 via the circulating pump 1;
b. feeding the pulp in the pulp distribution tube 11 into the cylinder through the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 to generate swirling flows in different directions of positive and negative directions in the cylinder, mixing compressed air into the pulp by the micro-bubble generator 12 to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser 5 through the pulp jet tube 6 at a bottom of the turbulent flow mineralization generator 2; the compressed air is respectively sent to the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 through the micro-bubble generator 12, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, thereby ensuring subsequent floatation separation;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel between the tapered flow director and the wall of the floatation separation releaser 5 from a gap of the tapered flow director and finally enters into a middling-tailing separator; opening the tailing tube 19 and discharging a part of the pulp that enters into the middling-tailing separator as the tailing from the floatation separation releaser 5 through a tailing tube outlet B
of the tailing tube 19; feeding the other part of the pulp as the middling into the circulating pump 1 through the middling tube 10 for further circulation, so as to perform cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
part of the pulp carrying easy-to-float particles is adhered to by air bubbles and facilitates increasing rising speeds of mineralized air bubbles under the action of the reverse buffer plate 18 in the tapered flow director and the flow directing vertical plates 9; the easy-to-float particles float up with air bubbles and undergo filtering when passing through the sieve plate
the middling tube 10 being connected to an inlet of the circulating pump 1, and an outlet of the circulating pump 1 being connected to the pulp distribution tube 11.
A fluid synergistic enhanced floatation separation method includes the following steps:
a. first closing the tailing tube 19, feeding a conditioned original pulp from a feed distributor inlet A into the feed distributor 4, and spraying the original pulp into the floatation separation releaser 5 through the sprayers of the feed distributor 4; the original pulp is diffused by the sieve plate 8 under the action of gravity and fed into the tapered flow director, flows into the middling tube 10 through the pulp flow channel between the tapered flow Date Recue/Date Received 2022-05-17 director and a wall of the floatation separation releaser 5, and is fed into the pulp distribution tube 11 via the circulating pump 1;
b. feeding the pulp in the pulp distribution tube 11 into the cylinder through the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 to generate swirling flows in different directions of positive and negative directions in the cylinder, mixing compressed air into the pulp by the micro-bubble generator 12 to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, and feeding the forcedly mixed and mineralized pulp into the tapered flow director in the floatation separation releaser 5 through the pulp jet tube 6 at a bottom of the turbulent flow mineralization generator 2; the compressed air is respectively sent to the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 through the micro-bubble generator 12, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, thereby ensuring subsequent floatation separation;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel between the tapered flow director and the wall of the floatation separation releaser 5 from a gap of the tapered flow director and finally enters into a middling-tailing separator; opening the tailing tube 19 and discharging a part of the pulp that enters into the middling-tailing separator as the tailing from the floatation separation releaser 5 through a tailing tube outlet B
of the tailing tube 19; feeding the other part of the pulp as the middling into the circulating pump 1 through the middling tube 10 for further circulation, so as to perform cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
part of the pulp carrying easy-to-float particles is adhered to by air bubbles and facilitates increasing rising speeds of mineralized air bubbles under the action of the reverse buffer plate 18 in the tapered flow director and the flow directing vertical plates 9; the easy-to-float particles float up with air bubbles and undergo filtering when passing through the sieve plate
8; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the easy-to-float particles from a concentrate tube outlet C of the concentrate tube 16 on the foam tank 3 above the floatation - g -Date Recue/Date Received 2022-05-17 separation releaser 5; remaining particles are left inside the floatation separation releaser 5 along with the pulp;
c. the easy-to-float particles in the pulp rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the easy-to-float particles from the concentrate tube outlet C of the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5;
d. medium floatable particles in the pulp, after being rectified by the sieve plate 8 in the floatation separation releaser 5, facilitates preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser 5; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the medium floatable particles from the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5.
A specific working process is: a. first feeding a conditioned original pulp from an inlet A
of the feed distributor 4 into the floatation separation releaser 5; the easy-to-float particles rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator p1ate7, discharging the easy-to-float particles from a concentrate tube outlet C of the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5, so as to form a concentrate product;
b. a part of medium floatable particles, after being sorted by the floatation separation releaser 5, float up after being rectified by the sieve plate 8 in the floatation separation releaser 5; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the medium floatable particles from the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5;
c. difficult-to-float particles, sorted by the floatation separation releaser 5, enter into a middling-tailing separator through a pulp flow channel between a tapered flow director and a wall of the floatation separation releaser 5, and are divided into two parts:
one part is discharged as the tailing product from the floatation separation releaser 5 via the outlet B of the tailing tube 19; and the other part is fed as the middling into the turbulent flow
c. the easy-to-float particles in the pulp rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the easy-to-float particles from the concentrate tube outlet C of the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5;
d. medium floatable particles in the pulp, after being rectified by the sieve plate 8 in the floatation separation releaser 5, facilitates preventing mineralized particles from falling off the air bubbles caused by violent pulp disturbance in the floatation separation releaser 5; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the medium floatable particles from the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5.
A specific working process is: a. first feeding a conditioned original pulp from an inlet A
of the feed distributor 4 into the floatation separation releaser 5; the easy-to-float particles rise rapidly; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator p1ate7, discharging the easy-to-float particles from a concentrate tube outlet C of the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5, so as to form a concentrate product;
b. a part of medium floatable particles, after being sorted by the floatation separation releaser 5, float up after being rectified by the sieve plate 8 in the floatation separation releaser 5; after washing away entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate 7, discharging the medium floatable particles from the concentrate tube 16 on the foam tank 3 above the floatation separation releaser 5;
c. difficult-to-float particles, sorted by the floatation separation releaser 5, enter into a middling-tailing separator through a pulp flow channel between a tapered flow director and a wall of the floatation separation releaser 5, and are divided into two parts:
one part is discharged as the tailing product from the floatation separation releaser 5 via the outlet B of the tailing tube 19; and the other part is fed as the middling into the turbulent flow
- 9 -Date Recue/Date Received 2022-05-17 mineralization generator through the middling tube 10 via the circulating pump 1, efficiently mineralized by the turbulent flow mineralization generator 2 and again sprayed into the floatation separation releaser 5 to perform cyclic sorting while enhancing suspension of coarse particles and increasing a load of floatation bubbles;
d. the compressed air is respectively sent to the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 through the micro-bubble generator 12, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, thereby ensuring subsequent floatation separation.
d. the compressed air is respectively sent to the impact flow mineralization tubes 13 and the cross flow mineralization tubes 14 through the micro-bubble generator 12, so as to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator 2, thereby ensuring subsequent floatation separation.
- 10 -Date Recue/Date Received 2022-05-17
Claims (3)
1. A fluid synergistic enhanced floatation separation device, comprising a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser; the turbulent flow mineralization generator being provided above the floatation separation releaser; the circulating pump connecting an outlet of the floatation separation releaser with the turbulent flow mineralization generator;
the turbulent flow mineralization generator comprising a cylinder; a lower portion of the turbulent flow mineralization generator being narrowed to form a first truncated cone structure, and a plurality of pulp distribution tubes spaced evenly around the cylinder; a plurality of impact flow mineralization tubes and a plurality of cross flow mineralization tubes being transversely arranged between the plurality of pulp distribution tubes and the cylinder; the cross flow mineralization tubes being connected to the cylinder at a tangent, and the impact flow mineralization tubes being radially connected to the cylinder;
each of the cross flow mineralization tubes and the impact flow mineralization tubes being provided with a micro-bubble generator; a pulp jet tube being arranged below the first truncated cone;
the floatation separation releaser comprising a cylinder; a lower portion of the floatation separation releaser being narrowed to form a second truncated cone structure;
a tailing tube having a tailing tube outlet being arranged at a center of a bottom of the second truncated cone structure; a middling-tailing separator comprising a middling tube being arranged at a side of the tailing tube; a foam tank being arranged above the cylinder; a concentrate tube being arranged at a bottom of the foam tank; a rectangular ultrasonic generator plate being arranged inside the cylinder below the foam tank; an annular feed distributor, including a feed distributor inlet, being arranged below the ultrasonic generator plate; the feed distributor being provided with a plurality of sprayers; a sieve plate being arranged inside the cylinder below the annular feed distributor; the second truncated cone structure being provided with a reverse buffer plate; a gap being left between the reverse buffer plate and the bottom of the second truncated cone structure; the second truncated cone structure being provided with a cone whose profile matches with the second truncated cone structure; a pulp flow channel being arranged between the cone and the second truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates being arranged inside the cone; the pulp jet tube extending through the foam tank on a top of the floatation separation releaser into the inside of the cylinder and passing through the ultrasonic generator plate, the feed distributor and the sieve plate until reaching a space among the plurality of flow directing vertical plates;
the diameter of the pulp jet tube increasing at the terminal end;
the middling tube being connected to an inlet of the circulating pump, and an outlet of the circulating pump being connected to the plurality of pulp distribution tubes.
the turbulent flow mineralization generator comprising a cylinder; a lower portion of the turbulent flow mineralization generator being narrowed to form a first truncated cone structure, and a plurality of pulp distribution tubes spaced evenly around the cylinder; a plurality of impact flow mineralization tubes and a plurality of cross flow mineralization tubes being transversely arranged between the plurality of pulp distribution tubes and the cylinder; the cross flow mineralization tubes being connected to the cylinder at a tangent, and the impact flow mineralization tubes being radially connected to the cylinder;
each of the cross flow mineralization tubes and the impact flow mineralization tubes being provided with a micro-bubble generator; a pulp jet tube being arranged below the first truncated cone;
the floatation separation releaser comprising a cylinder; a lower portion of the floatation separation releaser being narrowed to form a second truncated cone structure;
a tailing tube having a tailing tube outlet being arranged at a center of a bottom of the second truncated cone structure; a middling-tailing separator comprising a middling tube being arranged at a side of the tailing tube; a foam tank being arranged above the cylinder; a concentrate tube being arranged at a bottom of the foam tank; a rectangular ultrasonic generator plate being arranged inside the cylinder below the foam tank; an annular feed distributor, including a feed distributor inlet, being arranged below the ultrasonic generator plate; the feed distributor being provided with a plurality of sprayers; a sieve plate being arranged inside the cylinder below the annular feed distributor; the second truncated cone structure being provided with a reverse buffer plate; a gap being left between the reverse buffer plate and the bottom of the second truncated cone structure; the second truncated cone structure being provided with a cone whose profile matches with the second truncated cone structure; a pulp flow channel being arranged between the cone and the second truncated cone structure; a plurality of inverted trapezoidal flow directing vertical plates being arranged inside the cone; the pulp jet tube extending through the foam tank on a top of the floatation separation releaser into the inside of the cylinder and passing through the ultrasonic generator plate, the feed distributor and the sieve plate until reaching a space among the plurality of flow directing vertical plates;
the diameter of the pulp jet tube increasing at the terminal end;
the middling tube being connected to an inlet of the circulating pump, and an outlet of the circulating pump being connected to the plurality of pulp distribution tubes.
2. The fluid synergistic enhanced floatation separation device according to claim 1, wherein each of the impact flow mineralization tubes and each of the cross flow mineralization tubes are venturi tubes; the impact flow mineralization tubes and the cross flow mineralization tubes are arranged in an alternating fashion along the length of the plurality of pulp distribution tubes; adjacent cross flow mineralization tubes are connected to the cylinder at tangents in opposite directions; and a turbulence flow enhanced generator comprising a plurality of prisms is arranged on an inner wall of the pulp jet tube.
3. A fluid synergistic enhanced floatation separation method using the fluid synergistic enhanced floatation separation device according to claim 1, comprising the following steps:
a. first closing the tailing tube outlet of the tailing tube, feeding an initial pulp from the feed distributor inlet into the feed distributor, and spraying the initial pulp into the floatation separation releaser through the sprayers of the feed distributor; the initial pulp being diffused by the sieve plate under the action of gravity and fed into the reverse buffer plate, flows into the middling tube through the pulp flow channel, and is fed into the plurality of pulp distribution tubes via the circulating pump;
b. feeding the pulp in the plurality of pulp distribution tubes into the cylinder through the impact flow mineralization tubes and the cross flow mineralization tubes, mixing compressed air into the pulp by the micro-bubble generators to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the reverse buffer plate in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel and enters into a middling-tailing separator; opening the tailing tube and discharging a part of the pulp that enters into the middling-tailing separator through the tailing tube outlet of the tailing tube; feeding the other part of the pulp into the circulating pump through the middling tube for further circulation;
easy-to-float particles in the pulp are adhered to by air bubbles, forming mineralized air bubbles, and the reverse buffer plate and the flow directing vertical plates facilitate increasing rising speeds of the mineralized air bubbles as the pulp deflects off the reverse buffer plate;
the mineralized air bubbles rapidly float up and undergo filtering when passing through the sieve plate; filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube;
c. rectifying, by the sieve plate in the floatation separation releaser, medium floatable particles in the pulp, thereby reducing turbulence in the floatation separation releaser , reducing collisions between the medium floatable particles and the mineralized air bubbles and preventing the easy-to-float particles from falling off the air bubbles;
filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, and discharging the medium floatable particles from the concentrate tube outlet.
a. first closing the tailing tube outlet of the tailing tube, feeding an initial pulp from the feed distributor inlet into the feed distributor, and spraying the initial pulp into the floatation separation releaser through the sprayers of the feed distributor; the initial pulp being diffused by the sieve plate under the action of gravity and fed into the reverse buffer plate, flows into the middling tube through the pulp flow channel, and is fed into the plurality of pulp distribution tubes via the circulating pump;
b. feeding the pulp in the plurality of pulp distribution tubes into the cylinder through the impact flow mineralization tubes and the cross flow mineralization tubes, mixing compressed air into the pulp by the micro-bubble generators to perform forced mixing and mineralization of particles and micro bubbles inside the turbulent flow mineralization generator, and feeding the forcedly mixed and mineralized pulp into the reverse buffer plate in the floatation separation releaser through the pulp jet tube at a bottom of the turbulent flow mineralization generator;
part of the pulp carrying difficult-to-float particles enters into the pulp flow channel and enters into a middling-tailing separator; opening the tailing tube and discharging a part of the pulp that enters into the middling-tailing separator through the tailing tube outlet of the tailing tube; feeding the other part of the pulp into the circulating pump through the middling tube for further circulation;
easy-to-float particles in the pulp are adhered to by air bubbles, forming mineralized air bubbles, and the reverse buffer plate and the flow directing vertical plates facilitate increasing rising speeds of the mineralized air bubbles as the pulp deflects off the reverse buffer plate;
the mineralized air bubbles rapidly float up and undergo filtering when passing through the sieve plate; filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, discharging the easy-to-float particles from a concentrate tube outlet of the concentrate tube;
c. rectifying, by the sieve plate in the floatation separation releaser, medium floatable particles in the pulp, thereby reducing turbulence in the floatation separation releaser , reducing collisions between the medium floatable particles and the mineralized air bubbles and preventing the easy-to-float particles from falling off the air bubbles;
filtering entrained impurity mineral particles with oscillating flows generated by the rectangular ultrasonic generator plate, and discharging the medium floatable particles from the concentrate tube outlet.
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| CN201910354954.5A CN109939839B (en) | 2019-04-29 | 2019-04-29 | Fluid collaborative strengthening flotation separation device and method |
| CN201910354954.5 | 2019-04-29 | ||
| PCT/CN2019/109882 WO2020220584A1 (en) | 2019-04-29 | 2019-10-08 | Flow synergy-enhanced flotation separation apparatus and method |
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| CN109939839B (en) * | 2019-04-29 | 2023-07-21 | 中国矿业大学 | Fluid collaborative strengthening flotation separation device and method |
| CN110756338A (en) * | 2019-09-09 | 2020-02-07 | 安徽理工大学 | Cylinder flotation machine with jet flow air suction and stirring functions |
| CN111974746B (en) * | 2020-08-21 | 2021-09-24 | 中国石油大学(华东) | Device for cleaning filler by flotation bubbles and cleaning method |
| CN113102117B (en) * | 2021-05-06 | 2022-05-17 | 山东科技大学 | Focusing ultrasonic enhanced flotation bubble mineralization device |
| CN113102119B (en) * | 2021-05-06 | 2022-05-17 | 山东科技大学 | Inclined ultrasonic flotation bubble strengthening and mineralizing device |
| CN113102120B (en) * | 2021-05-06 | 2022-05-17 | 山东科技大学 | Multi-frequency ultrasonic flotation bubble strengthening and mineralizing device |
| CN113102118B (en) * | 2021-05-06 | 2022-05-17 | 山东科技大学 | Enhanced mineralization device for separated ultrasonic flotation bubbles |
| CN113262657B (en) * | 2021-05-28 | 2022-10-14 | 柏中环境科技(上海)股份有限公司 | Device and method for improving internal mixing in internal circulation reactor and reactor |
| CN114713380B (en) * | 2021-10-19 | 2022-12-27 | 中国矿业大学 | Coarse particle flotation device and method based on coupling of ultrasonic waves and mechanical damping blocks |
| CN118106134B (en) * | 2024-04-09 | 2024-07-30 | 浙江艾领创矿业科技有限公司 | Jet flow micro-bubble flotation system |
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| CN109939839B (en) | 2023-07-21 |
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