CN109967264B - Mixed separation system and method based on fluid strengthening - Google Patents
Mixed separation system and method based on fluid strengthening Download PDFInfo
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- CN109967264B CN109967264B CN201910354542.1A CN201910354542A CN109967264B CN 109967264 B CN109967264 B CN 109967264B CN 201910354542 A CN201910354542 A CN 201910354542A CN 109967264 B CN109967264 B CN 109967264B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1418—Flotation machines using centrifugal forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1456—Feed mechanisms for the slurry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1468—Discharge mechanisms for the sediments
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- Engineering & Computer Science (AREA)
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Abstract
A fluid-enhanced hybrid separation system and method is suitable for mineral separation. The device comprises a forced mixing tempering system, a turbulent mineralization reaction system, a circulation flotation separation system and a centrifugal flotation separation system; the forced mixing tempering system is connected with the forced mixing tempering device and also connected with the turbulent mineralization reaction system through a pipeline, the turbulent mineralization reaction system is connected with the circulating flotation separation system through a pipeline, the bottom of the circulating flotation separation system is connected with the forced mixing tempering device through a pipeline, the circulating flotation separation system is connected with the centrifugal flotation separation system through a pipeline, and the centrifugal flotation separation system is connected with the circulating flotation separation system through a pipeline. The method has simple steps and good use effect, and improves the mixing separation efficiency and capability of the refractory mineral particles through reasonable design of the structure of the mixing separation device and the flow process of the mixing separation fluid and reasonable design of local ore pulp circulation and system ore pulp circulation.
Description
Technical Field
The invention relates to a fluid-reinforced-based mixed separation system and a fluid-reinforced-based mixed separation method, which are particularly suitable for separating mineral particles or coal slime in coal mine processing.
Background
The mineral flotation process is a typical flow process, and relates to the processes of adsorption of particles and medicaments, mineralization of particles and bubbles, separation of mineralized bubbles and the like, and is essentially a mixed separation process, and the action of fluid always penetrates through the process. As ores become depleted and their separation dimensions become finer, the impact of beneficiation processes (or hydrodynamic processes) becomes increasingly apparent in addition to processes and agents. Flotation requires dosing and energy input. The more difficult the ore is selected, the finer the granularity and the larger the energy required, which is required to be continuously enhanced along with the continuous energy injection in the separation process, but the research on strengthening the mineral mixing separation process from the fluid flow angle system and the related technology such as the response mechanism of particles, medicaments and bubbles to the fluid environment are not available at present, and the interaction among the particles, the bubbles and the medicaments in different fluid environments and the like are particularly related to the traditional pre-flotation slurry mixing process, the flotation mineralization process, the flotation separation process and the like. Thus, there is a need from a fluid flow perspective for systems to construct a fluid-based adaptive hybrid separation process to enhance the separation efficiency and capacity of mineral particles (or slime).
Disclosure of Invention
Technical problems: aiming at the technical problems, the fluid-reinforced-based hybrid separation system and the fluid-reinforced-based hybrid separation method are simple in structure and good in separation effect.
The technical scheme is as follows: the invention provides a fluid strengthening-based mixed separation system, which comprises a forced mixed tempering system, a turbulent mineralization reaction system, a circulating flotation separation system and a centrifugal flotation separation system, wherein the forced mixed tempering system comprises a forced mixed tempering device and a circulating pump, the forced mixed tempering device is of a cylindrical structure, a plurality of jet impact pipes and a plurality of jet fault pipes are arranged on the periphery of the cylinder, a circulating ore pulp outlet at the upper part of the cylinder is connected with an inlet of a distribution tank through a pipeline for the circulating pump, the distribution tank is connected with the jet impact pipes and the jet fault pipes through pipelines, and the conditioned ore pulp outlet at the upper part of the cylinder is connected with the turbulent mineralization reactor through the pipeline; the turbulent mineralization reaction system comprises a turbulent mineralization reaction system device with a cylindrical structure, wherein a plurality of cross-flow pre-mineralization pipes, a plurality of impinging stream pre-mineralization pipes and a plurality of first microbubble generators are arranged at the periphery of the cylinder, the vortex generators are arranged in the cylinder, and the turbulent mineralization reactor is connected with a circulating flotation separator through a pipeline; the circulating flotation separation system comprises a circulating flotation separator with a cylindrical structure, wherein a jet diverter, a feeder, a pulp distributor and a circulating generator are arranged, a middling outlet of the circulating flotation separator is connected with a feeding port of the forced mixing conditioner through a pipeline, and a foam tank outlet of the circulating flotation separator is connected with the centrifugal flotation separator through a pipeline; the centrifugal flotation separation system comprises a centrifugal flotation separator with a cylindrical structure, a stirring transmission mechanism, a forced circulation centrifugal mineralization generator and a gas dispersion box, wherein a second microbubble generator is arranged on the gas dispersion box, and a foam outlet of the centrifugal flotation separator is connected with a feeder of the circulation flotation separator through a pipeline.
The invention relates to a fluid-reinforced mixing and separating system, which is characterized in that: the system comprises a forced mixing tempering system, a turbulent mineralization reaction system, a circulating flotation separation system and a centrifugal flotation separation system, wherein the forced mixing tempering system is provided with a circulating ore pulp outlet which is connected with an inlet pipeline of a distribution tank of a forced mixing tempering device through a circulating pump;
the forced mixing tempering system is provided with a forced mixing tempering device comprising a cylindrical tempering pulp outlet and a circulating pulp outlet which are respectively arranged at the top of the forced mixing tempering device, the forced mixing tempering device is provided with an pulp disperser at the outer side, a plurality of dispersing pipelines are arranged on the pulp disperser around the forced mixing tempering device, a plurality of spraying pipes are arranged between the dispersing pipelines and the forced mixing tempering device for spraying the pulp into the forced mixing tempering device, and the pulp is internally provided with a shearing force so as to strengthen the mineralization effect of the pulp;
the turbulent mineralization reaction system is provided with a cylindrical turbulent mineralization reactor, a discharge hole of the turbulent mineralization reactor is arranged at the top of the turbulent mineralization reactor, the bottom of the turbulent mineralization reactor is provided with a pulp disperser, a plurality of dispersing pipelines are arranged on the pulp disperser around the turbulent mineralization reactor, and a plurality of mineralization pipes are respectively arranged between the dispersing pipelines and the turbulent mineralization reactor;
the circulation flotation separation system is provided with a circulation flotation separator, wherein the circulation flotation separator is provided with a circulation flotation separator foam tank at the top, a circulation flotation separator foam tank is arranged at the lowest part of the circulation flotation separator foam tank, a feeder is arranged at the circular outlet at the top of the circulation flotation separator foam tank, a turbulent mineralization reactor feed inlet is arranged on the feeder, the circulation flotation separator is provided with an annular circulation generator jet splitter at the bottom, a middling tailing separator is arranged in the circulation generator jet splitter (8), a middling outlet and a circulation flotation separator tailing outlet are arranged on the middling tailing separator, a jet splitter is arranged above the circulation flotation separator, a jet splitter feed inlet is arranged on the jet splitter, the jet splitter is connected with the circulation generator jet splitter through a plurality of pipelines, and a plurality of circulation jet holes are arranged on the circulation generator jet splitter;
the centrifugal flotation separation system comprises a centrifugal flotation separator, wherein a centrifugal flotation separator foam tank is arranged at the top of the centrifugal flotation separator, a centrifugal flotation separator foam outlet is arranged at the lowest part of the centrifugal flotation separator foam tank, a stirring transmission mechanism is arranged at the top of the centrifugal flotation separator foam tank, a centrifugal flotation separator feed inlet is arranged at one side of the centrifugal flotation separator and extends into the centrifugal flotation separator through a pipeline, a gas dispersion tank is arranged at the bottom of the centrifugal flotation separator, a centrifugal flotation separator tailing outlet and a second microbubble generator are arranged on the gas dispersion tank, a forced circulation centrifugal mineralization generator is arranged in the centrifugal flotation separator close to the bottom, and comprises an upper guide cylinder, a pushing wheel, a dispersion stator, a centrifugal mineralization wheel and a lower guide device which is arranged below the centrifugal mineralization wheel and is fixed at the bottom of the tank body, wherein the lower guide device comprises a guide inverted cone, a discharge bottom plate and a lower guide cylinder which is arranged at the middle of the discharge bottom plate; the dispersion stator comprises a mineralization cover plate and an ore pulp dispersion plate, wherein the ore pulp dispersion plate is of a rectangular structure and is arranged below the mineralization cover plate; the concrete discharging bottom plate is arranged at the position, close to the bottom, in the centrifugal flotation separator, a lower guide cylinder is arranged at the center of the discharging bottom plate, a plurality of through holes are formed in the center of the discharging bottom plate in a surrounding mode, gaps are reserved between the discharging bottom plate and the outer wall of the centrifugal flotation separator, a guide inverted cone is arranged on the discharging bottom plate, a plurality of ore pulp dispersing plates with rectangular structures pointing to the circle center and vertically arranged are arranged in the guide inverted cone, a mineralization cover plate is arranged in the guide inverted cone, an upper guide cylinder is arranged at the center of the mineralization cover plate, a pushing wheel is arranged in the upper guide cylinder, a stirring transmission mechanism extends into a space between the mineralization cover plate and the discharging bottom plate through the center of the upper guide cylinder and the mineralization cover plate, centrifugal mineralization wheels are arranged in the space between the mineralization cover plate and the discharging bottom plate, and discharge holes are formed in the mineralization cover plate and the discharging bottom plate.
The forced mixing hardening and tempering device is provided with a plurality of injection pipes which are arranged between the forced mixing hardening and tempering device and are respectively an injection impact pipe and an injection staggered pipe which are alternately arranged.
The turbulent mineralization reactor is provided with a vortex generator with a plurality of convex structures on the inner wall.
A circular plate is arranged on the outer side of the circular flow generator injection shunt, a gap is reserved between the circular plate and the outer wall on the bottom plate, a plurality of circular flow injection cavities are arranged on the circular flow generator injection shunt (8), circular flow is generated through spray holes on the circular flow injection cavities, an outer cylinder wall is arranged between the inner ring of the circular flow generator injection shunt and the middling tailing separator, and the outlet direction of the injection cavities is along the inner wall of the circular plate; a feeding hole is arranged above the circulation injection cavity and is connected with an outlet pipe of the injection diverter; the middle of the bottom plate is provided with an ore pulp distributor jet splitter, the ore pulp distributor jet splitter is of a cylindrical structure, and the outer cylinder wall is 0.5-1.0m higher than the bottom plate.
A mixing separation method based on fluid enhancement comprises the following steps:
a. firstly, pulp and medicament are fed into a forced mixing conditioner through a feeding port of the forced mixing conditioner by a pipeline, then flow out from an outlet of the circulating pulp and are fed into the forced mixing conditioner through a distribution groove inlet of the forced mixing conditioner by a circulating pump, a solid-liquid two-phase system of the pulp and the medicament is sprayed into the forced mixing conditioner at a high speed by jet impact and jet cross flow, the absorption of the medicament on the surfaces of mineral particles of the pulp is enhanced under the action of the high-speed impact flow and the forced shearing cross flow of the pulp and the medicament in the spraying process, the circulating pulp is provided with a device for realizing multiple circulating mixing conditioning in a system by the circulating pump, and the conditioned pulp is discharged through an outlet of the conditioning pulp and is fed into a turbulent mineralization reactor by a pipeline;
b. the conditioned ore pulp enters an ore pulp disperser from a feed inlet of a turbulent mineralization reactor, is provided with turbulent mineralization reaction by a cross flow pre-mineralization pipe and an impact flow pre-mineralization pipe which are alternately arranged on a dispersing pipeline, and is mixed with air by a first microbubble generator when the turbulent mineralization reaction is provided, the three-phase system of air in the turbulent mineralization reactor, ore pulp and coal particles in the ore pulp realizes high-efficiency collision of fine particles and bubbles under a forced turbulent environment mainly comprising high-speed impact flow and forced shear flow, and is discharged from a discharge outlet of the turbulent mineralization reactor after strengthening the efficiency and capacity of floatation mineralization reaction and is fed into a feed inlet of a jet splitter by a pipeline;
c. the ore pulp is fed into the jet flow divider through the feed inlet of the jet flow divider and is fed into the jet flow divider of the circulation generator through the jet flow divider from a plurality of pipelines, the ore pulp is sprayed out from the circulation jet cavity of the jet flow divider of the circulation generator to form circulation between the outer cylinder wall and the annular plate, the flotation recovery effect on hard-floating particles is further enhanced, the underflow product separated by the jet flow divider of the centrifugal flotation separator is discharged from the tailing outlet of the circulation flotation separator as final tailings, the separated middlings are discharged from the middlings outlet and fed into the feed inlet of the forced mixing conditioner through the pipeline, the discharged tailing ore pulp is fed into the feed inlet of the centrifugal flotation separator through the pipeline, the circulation flotation separator is provided with a circulation flotation separator foam tank at the top for collecting overflowed foam, and the overflow foam tank is discharged from the outlet of the circulation flotation separator as concentrate product;
d. the tailing pulp is fed into the centrifugal flotation separator from a feeding hole of the centrifugal flotation separator, is sprayed into a flow guide cylinder from the spraying flow divider of the centrifugal flotation separator, and pushes a pushing wheel to enter a space between a mineralization cover plate and a discharging bottom plate, at the moment, the centrifugal mineralization wheel in the space rotates under the drive of a stirring transmission mechanism through a transmission shaft, so that the tailing pulp continuously generates ascending buoyancy in the tailing pulp along a rectangular pulp dispersion plate and a flow guide inverted cone under the action of the centrifugal mineralization wheel, a foam layer is generated at the top of the ascending tailing pulp, and finally is discharged from a foam outlet of the centrifugal flotation separator of a foam tank of the centrifugal flotation separator, and is fed into a feeding hole of a circulating flotation separator through a pipeline for repeated separation, the tailing pulp of the centrifugal flotation separator is sprayed into refractory particles, flows out through a discharging hole on the discharging bottom plate, one part of the refractory particles are discharged from a tailing outlet of the centrifugal flotation separator of a gas dispersion box, and the other part of the refractory particles are sucked into the space of the centrifugal mineralization wheel through a lower flow guide cylinder in the middle part of the discharging bottom plate under the action of a centrifugal mineralization wheel, and the centrifugal mineral pulp is continuously generated by the centrifugal force generated by the centrifugal mineralization wheel when rotating, and the refractory particles are dispersed into the tailing pulp continuously and circulated in the pulp.
The beneficial effects are that:
the invention takes a multi-turbulent flow field enhanced mixing separation process as an entry point, improves the mixing separation efficiency and capability of refractory mineral particles through reasonable design of a mixing separation device structure and the mixing separation process and reasonable design of local ore pulp circulation and system ore pulp circulation, and provides a technology for enhancing mineral mixing separation from a fluid flow angle system. Under the action of high-speed impinging stream and forced shearing cross stream in the forced mixing conditioner, the solid-liquid two-phase system strengthens the adsorption of the medicament on the surfaces of mineral particles, and the multi-time circulation mixing conditioning of ore pulp in the conditioner further improves the hydrophobicity of the surfaces of the particles; the quenched and tempered gas-liquid-solid three-phase system realizes the efficient collision of fine particles and bubbles in a forced turbulence environment mainly comprising high-speed impinging stream and forced shearing stream in a turbulence mineralization reactor, and improves the mineralization effect; the three-phase system after high-efficiency mineralization is sequentially separated by a circulating flotation separator and a centrifugal flotation separator, middling products of the circulating flotation separator return to the forced mixing conditioner, the mixing separation process is repeated, the forced circulation system of the centrifugal flotation separator further strengthens the flotation recovery of the difficultly-floated particles, and the foam products separated by the centrifugal flotation separator return to the circulating flotation separator for repeated separation. Through reasonable design of the structure of the mixing and separating device and the flowing process of the mixing and separating fluid and reasonable design of local ore pulp circulation and system ore pulp circulation, the mixing and separating efficiency and capacity of refractory mineral particles are improved.
Drawings
FIG. 1 is a schematic diagram of a fluid-based enhanced hybrid separation system in accordance with the present invention.
FIG. 2 is a schematic diagram of the forced mixing tempering apparatus according to the present invention.
FIG. 3 is a schematic diagram of the turbulent mineralization reactor according to the present invention.
Fig. 4 is a schematic view of the structure of the circulation generator of the present invention.
FIG. 5 is a schematic diagram of the forced circulation centrifugal mineralization generator according to the present invention.
In the figure: 1-forced mixing tempering system, 2-turbulent mineralization reaction system, 3-circulation flotation separation system, 4-centrifugal flotation separation system, 5-forced mixing tempering device, 6-circulation pump, 7-turbulent mineralization reactor, 8-jet splitter, 9-feeder, 10-circulation flotation separator, 11-pulp distributor, 12-circulation generator, 13-centrifugal flotation separator, 14-forced circulation centrifugal mineralization generator, 15-second microbubble generator, 16-stirring transmission mechanism, 17-gas dispersion tank, 18-jet impact pipe, 19-jet offset pipe, 20-cross flow pre-mineralization pipe, 21-impact pre-mineralization pipe, 22-first microbubble generator, 23-vortex generator, 24-bottom plate, 25-outer cylinder wall, 26-annular plate, 27-circulation jet cavity, 28-diversion back taper, 29-lower guide cylinder, 30-propelling wheel, 31-ore pulp dispersion plate, 32-upper guide cylinder, 33-mineralization cover plate, 34-centrifugal mineralization wheel, 35-discharge bottom plate, A-forced mixing conditioner feed inlet, B-conditioned ore pulp outlet, C-circulating ore pulp outlet, D-forced mixing conditioner distribution tank inlet, E-turbulent mineralization reactor feed inlet, F-turbulent mineralization reactor discharge outlet, G-jet splitter feed inlet, H-feeder feed inlet, I-circulation flotation separator foam tank outlet, J-middling outlet, K-circulation flotation separator tailing outlet, L-centrifugal flotation separator foam outlet, M-centrifugal flotation separator feed inlet, N-centrifugal flotation separator tailing outlet.
Detailed Description
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 fluid strengthening-based mixed separation system comprises a forced mixing tempering system 1, a turbulent mineralization reaction system 2, a circulating flotation separation system 3 and a centrifugal flotation separation system 4 which are connected through pipelines, wherein a circulating ore pulp outlet C of the forced mixing tempering system 1 is connected with an inlet D of a distribution tank of a forced mixing tempering device through a circulating pump 6, a tempering ore pulp outlet B is connected with a feeding port E of a turbulent mineralization reactor of the turbulent mineralization reaction system 2 through a pipeline, a discharging port F of the turbulent mineralization reactor of the turbulent mineralization reaction system 2 is connected with a feeding port G of a jet splitter of the circulating flotation separation system 3 through a pipeline, a middling outlet J at the bottom of the circulating flotation separation system 3 is connected with a feeding port A of the forced mixing tempering device through a pipeline, a circulating ore pulp outlet K of the circulating flotation separation system 3 is connected with a feeding port M of a centrifugal flotation separator of the centrifugal flotation separation system 4 through a pipeline, and a foam outlet L of the centrifugal flotation separator of the centrifugal flotation separation system 4 is connected with a feeding port H of the turbulent mineralization reactor of the circulating flotation separation system 3 through a pipeline;
the forced mixing tempering system 1 comprises a cylindrical forced mixing tempering device 5, a tempering ore pulp outlet B and a circulating ore pulp outlet C are respectively arranged at the top of the forced mixing tempering device 5, an ore pulp disperser is arranged at the outer side of the forced mixing tempering device 5, a plurality of dispersing pipelines are arranged on the ore pulp disperser around the forced mixing tempering device 5, a plurality of spraying pipes are arranged between the dispersing pipelines and the forced mixing tempering device 5 and used for spraying ore pulp into the forced mixing tempering device 5, and shearing force is generated in the forced mixing tempering device 5 by the ore pulp so as to strengthen the mineralization effect of the ore pulp; as shown in fig. 2, the plurality of injection pipes arranged between the forced mixing tempering device 5 and the plurality of dispersing pipelines are respectively an injection impact pipe 18 and an injection staggered pipe 19 which are alternately arranged;
the turbulent mineralization reaction system 2 comprises a cylindrical turbulent mineralization reactor 7, a discharge hole F of the turbulent mineralization reactor is arranged at the top of the turbulent mineralization reactor 7, a pulp disperser is arranged at the bottom of the turbulent mineralization reactor 7, a plurality of dispersing pipelines are arranged on the pulp disperser around the turbulent mineralization reactor 7, a plurality of mineralization pipes are respectively arranged between the dispersing pipelines and the turbulent mineralization reactor 7, as shown in figure 3, the plurality of mineralization pipes comprise cross flow pre-mineralization pipes 20 and impinging stream pre-mineralization pipes 21 which are alternately arranged, wherein the cross flow pre-mineralization pipes 20 and the impinging stream pre-mineralization pipes 21 are both provided with first microbubble generators 22, and vortex generators 23 with a plurality of raised structures are arranged on the inner wall of the turbulent mineralization reactor 7;
the circulation flotation separation system 3 comprises a circulation flotation separator 10, a circulation flotation separator foam tank is arranged at the top of the circulation flotation separator 10, a circulation flotation separator foam tank I is arranged at the lowest part of the circulation flotation separator foam tank, a feeder 9 is arranged at the circular outlet at the top of the circulation flotation separator foam tank, a turbulent mineralization reactor feed inlet H is arranged on the feeder 9, an annular circulation generator 12 is arranged at the bottom of the circulation flotation separator 10, a middling tailing separator is arranged in the circulation generator 12, a middling outlet J and a circulation flotation separator tailing outlet K are arranged on the middling tailing separator, a jet diverter 8 is arranged above the circulation flotation separator 10, a jet diverter feed inlet G is arranged on the jet diverter 8, the jet diverter 8 is connected with the circulation generator 12 through a plurality of pipelines, and a plurality of circulation jet holes are arranged on the circulation generator 12; as shown in fig. 4, a ring plate 26 is arranged on the outer side of the ring generator 12, a gap is reserved between the ring plate 26 and the outer wall on the bottom plate 24, a plurality of ring-flow injection cavities 27 are arranged on the ring generator 12, ring-flow is generated through spray holes on the ring-flow injection cavities 27, an outer cylinder wall 25 is arranged between the inner ring of the ring generator 12 and the middling tailing separator, and the outlet direction of the injection cavities is along the inner wall of the ring plate; a feed hole is arranged above the circulation injection cavity 27 and is connected with an outlet pipe of the injection diverter 8; the middle of the bottom plate 24 is provided with an ore pulp distributor 11, the ore pulp distributor 11 is of a cylindrical structure, and the outer cylinder wall 25 is higher than the bottom plate 240.5-1.0m;
as shown in fig. 5, the centrifugal flotation separation system 4 comprises a centrifugal flotation separator 13, a centrifugal flotation separator foam tank is arranged at the top of the centrifugal flotation separator 13, a centrifugal flotation separator foam outlet L is arranged at the lowest part of the centrifugal flotation separator foam tank, a stirring transmission mechanism 16 is arranged at the top of the centrifugal flotation separator foam tank, a centrifugal flotation separator feed inlet M is arranged at one side of the centrifugal flotation separator 13 and extends into the centrifugal flotation separator 13 through a pipeline, a gas dispersion tank 17 is arranged at the bottom of the centrifugal flotation separator 13, a centrifugal flotation separator tailing outlet N and a second microbubble generator 15 are arranged on the gas dispersion tank 17, a forced circulation centrifugal mineralization generator 14 is arranged in the centrifugal flotation separator 13 near the bottom, the forced circulation centrifugal mineralization generator 14 comprises an upper guide cylinder 32, a propelling wheel 30, a dispersion stator, a centrifugal mineralization wheel 34 and a lower guide device which is arranged below the centrifugal mineralization wheel 34 and is fixed at the bottom of the tank, and comprises a guide cone 28, a discharge bottom plate 35 and a lower guide cylinder 29 which is arranged at the middle of the discharge bottom plate 35; the dispersion stator comprises a mineralization cover plate 33 and an ore pulp dispersion plate 31, wherein the ore pulp dispersion plate 31 is of a rectangular structure and is arranged below the mineralization cover plate 33; the concrete discharging bottom plate 35 is arranged in the centrifugal flotation separator 13 near the bottom, a lower guide cylinder 29 is arranged at the center of the discharging bottom plate 35, a plurality of through holes are formed around the center of the discharging bottom plate 35, a gap is reserved between the discharging bottom plate 35 and the outer wall of the centrifugal flotation separator 13, a guide back taper 29 is arranged on the discharging bottom plate 35, a plurality of ore pulp dispersing plates 31 with rectangular structures pointing to the center of the circle and vertically arranged are arranged in the guide back taper 29, a mineralizing cover plate 33 is arranged in the guide back taper 29, an upper guide cylinder 32 is arranged at the center of the mineralizing cover plate 33, a pushing wheel 30 is arranged in the upper guide cylinder 32, a stirring transmission mechanism 16 extends into a space between the mineralizing cover plate 33 and the discharging bottom plate 35 through the center of the upper guide cylinder 32 and the mineralizing cover plate 33, a centrifugal mineralizing wheel 34 is arranged in the space between the mineralizing cover plate 33 and the discharging bottom plate 35 at the end of the transmission shaft, and discharge holes are arranged on the mineralizing cover plate 33 and the discharging bottom plate 35.
A mixing separation method based on fluid enhancement comprises the following steps:
a. firstly, ore pulp and medicament are fed into a forced mixing conditioner 5 through a forced mixing conditioner feed port A by a pipeline, then flow out of a circulating ore pulp outlet C and are fed into the forced mixing conditioner through a circulating pump 6 from a forced mixing conditioner distribution tank inlet D, a solid-liquid two-phase system of the ore pulp and the medicament is sprayed into the forced mixing conditioner 5 at a high speed through a spraying impact 18 and a spraying cross flow 19, the adsorption of the medicament on the surfaces of mineral particles of the ore pulp is enhanced under the action of the high-speed impact flow and the forced shearing cross flow in the spraying process, the circulating ore pulp realizes the repeated circulating mixing conditioning in the system through the circulating pump 6, and the conditioned ore pulp is discharged through a conditioning ore pulp outlet B and is fed into a turbulent mineralization reactor 7 through a pipeline;
b. the conditioned ore pulp enters an ore pulp disperser from a feed inlet E of a turbulent mineralization reactor, is fed into a turbulent mineralization reaction 7 through cross flow pre-mineralization pipes 20 and impinging stream pre-mineralization pipes 21 which are alternately arranged on a dispersing pipeline, is mixed with air through a first microbubble generator 22 while being fed into the turbulent mineralization reaction 7, and realizes high-efficiency collision of fine particles and bubbles in a forced turbulent environment mainly comprising high-speed impinging stream and forced shearing stream by using the air in the turbulent mineralization reactor 7, and is discharged from a discharge outlet F of the turbulent mineralization reactor after the efficiency and capacity of the flotation mineralization reaction are enhanced and fed into a feed inlet G of an injection diverter through the pipeline;
c. the ore pulp is fed into the jet flow divider 8 through the jet flow divider feed inlet G and is fed into the circulation generator 12 through the jet flow divider 8 from a plurality of pipelines, the ore pulp is sprayed out from the circulation jet cavity 27 of the circulation generator 12 to form circulation between the outer cylinder wall 25 and the annular plate 26, the flotation recovery effect on hard-floating particles is further enhanced, the underflow product separated by the centrifugal flotation separator 13 is discharged from the tailing outlet K of the circulation flotation separator as final tailings, the separated middlings are discharged from the middlings outlet J and are fed into the forced mixing conditioner feed inlet A through a pipeline, the discharged tailing ore pulp is fed into the centrifugal flotation separator feed inlet M through a pipeline, the overflow foam is collected in the foam tank of the circulation flotation separator at the top of the circulation flotation separator 10, and the underflow product is discharged from the foam tank outlet I of the circulation flotation separator as concentrate product;
d. the tailing pulp is fed into the centrifugal flotation separator 13 from the feeding hole M of the centrifugal flotation separator to enter the upper guide cylinder 32, and pushes the pushing wheel 30 to enter a space between the mineralization cover plate 33 and the discharging bottom plate 35, at this time, the centrifugal mineralization wheel 34 in the space rotates under the drive of the stirring transmission mechanism 16 through the transmission shaft, so that the tailing pulp continuously generates ascending buoyancy in the tailing pulp along the rectangular pulp dispersing plate 31 and the guide inverted cone 28 under the action of the centrifugal mineralization wheel 34, a foam layer is generated at the top of the ascending tailing pulp, and finally, the foam layer is discharged from the foam outlet L of the centrifugal flotation separator of the foam tank of the centrifugal flotation separator, and fed into the feeding hole H of the circulating flotation separator through a pipeline, the tailing pulp near the discharging bottom plate 35 is separated into refractory particles, one part of the refractory particles flows out from the centrifugal separator outlet N of the gas dispersing box 17, and the other part of the refractory particles are sucked into the space of the centrifugal mineralization wheel 35 through the lower guide cylinder 29 in the middle of the discharging bottom plate 35 under the action of the centrifugal mineralization wheel 34 through the centrifugal suction of the centrifugal mineralization wheel 35, and the refractory particles are continuously circulated in the ore pulp after the rotation of the centrifugal mineralization wheel 19, and the ore pulp is continuously generated in the circulation.
Claims (5)
1. A fluid-based enhanced hybrid separation system, characterized by: the system comprises a forced mixing tempering system (1), a turbulent mineralization reaction system (2), a circulating flotation separation system (3) and a centrifugal flotation separation system (4) which are connected through pipelines, wherein a circulating ore pulp outlet (C) of the forced mixing tempering system (1) is connected with an inlet (D) of a distribution tank of the forced mixing tempering device through a circulating pump (6), a tempering ore pulp outlet (B) is connected with a turbulent mineralization reactor feed inlet (E) of the turbulent mineralization reaction system (2) through a pipeline, a turbulent mineralization reactor discharge outlet (F) of the turbulent mineralization reaction system (2) is connected with a jet splitter feed inlet (G) of the circulating flotation separation system (3) through a pipeline, a middling outlet (J) at the bottom of the circulating flotation separation system (3) is connected with a feeding inlet (A) of the forced mixing tempering device through a pipeline, a tailing outlet (K) of the circulating flotation separation system (3) is connected with a centrifugal separator feed inlet (M) of the centrifugal flotation separation system (4) through a pipeline, and a centrifugal flotation separator foam outlet (L) of the centrifugal flotation separation system (4) is connected with a flotation separation system (H) feed inlet (3);
the forced mixing tempering system (1) comprises a cylindrical forced mixing tempering device (5), a tempering ore pulp outlet (B) and a circulating ore pulp outlet (C) are respectively arranged at the top of the forced mixing tempering device (5), an ore pulp disperser is arranged at the outer side of the forced mixing tempering device (5), a plurality of dispersing pipelines are arranged on the ore pulp disperser around the forced mixing tempering device (5), a plurality of spraying pipes are arranged between the dispersing pipelines and the forced mixing tempering device (5) and used for spraying ore pulp into the forced mixing tempering device (5), and shearing force is generated in the forced mixing tempering device (5) by the ore pulp so as to strengthen the mineralization effect of the ore pulp;
the turbulent mineralization reaction system (2) comprises a cylindrical turbulent mineralization reactor (7), a discharge hole (F) of the turbulent mineralization reactor is arranged at the top of the turbulent mineralization reactor (7), an ore pulp disperser is arranged at the bottom of the turbulent mineralization reactor (7), a plurality of dispersing pipelines are arranged on the ore pulp disperser around the turbulent mineralization reactor (7), and a plurality of mineralization pipes are respectively arranged between the dispersing pipelines and the turbulent mineralization reactor (7);
the circulation flotation separation system (3) comprises a circulation flotation separator (10), a circulation flotation separator foam tank is arranged at the top of the circulation flotation separator (10), a circulation flotation separator foam tank outlet (I) is arranged at the lowest part of the circulation flotation separator foam tank, a feeder (9) is arranged at the circular outlet at the top of the circulation flotation separator foam tank, a feeder feed inlet (H) is arranged on the feeder (9), an annular circulation generator (12) is arranged at the bottom of the circulation flotation separator (10), a middling tailing separator is arranged in the circulation generator (12), a middling outlet (J) and a circulation flotation separator tailing outlet (K) are arranged on the middling tailing separator, an injection diverter (8) is arranged above the circulation flotation separator (10), an injection diverter feed inlet (G) is arranged on the injection diverter (8), the injection diverter (8) is connected with the circulation generator (12) through a plurality of pipelines, and a plurality of circulation injection holes are arranged on the circulation generator (12);
the centrifugal flotation separation system (4) comprises a centrifugal flotation separator (13), a centrifugal flotation separator foam tank is arranged at the top of the centrifugal flotation separator (13), a centrifugal flotation separator foam outlet (L) is arranged at the lowest part of the centrifugal flotation separator foam tank, a stirring transmission mechanism (16) is arranged at the top of the centrifugal flotation separator foam tank, a centrifugal flotation separator feed inlet (M) is arranged at one side of the centrifugal flotation separator (13) and extends into the centrifugal flotation separator (13) through a pipeline, a gas dispersion tank (17) is arranged at the bottom of the centrifugal flotation separator (13), a centrifugal flotation separator tailing outlet (N) and a second microbubble generator (15) are arranged on the gas dispersion tank (17), a forced circulation centrifugal mineralization generator (14) is arranged at the position, close to the bottom, in the centrifugal flotation separator (13), and comprises an upper guide cylinder (32), a propulsion wheel (30), a dispersion stator, a centrifugal mineralization wheel (34) and a lower guide device which is arranged below the centrifugal mineralization wheel (34) and is fixed at the bottom of the tank body, wherein the lower guide device comprises a guide cone (28), a guide cone (35) and a guide bottom plate (35) arranged at the middle part of the guide cylinder (35) is arranged below the guide cylinder; the dispersion stator comprises a mineralization cover plate (33) and an ore pulp dispersion plate (31), wherein the ore pulp dispersion plate (31) is of a rectangular structure and is arranged below the mineralization cover plate (33); the concrete discharging bottom plate (35) is arranged at the position, close to the bottom, in the centrifugal flotation separator (13), the center of the discharging bottom plate (35) is provided with a lower guide cylinder (29), the discharging bottom plate (35) is provided with a plurality of through holes around the center, gaps are reserved between the discharging bottom plate (35) and the outer wall of the centrifugal flotation separator (13), a flow guiding inverted cone (28) is arranged on the material bottom plate (35), a plurality of ore pulp dispersing plates (31) with rectangular structures pointing to the circle center and vertically arranged are arranged in the flow guiding inverted cone (28), mineralizing cover plates (33) are arranged on the ore pulp dispersing plates (31), an upper guide cylinder (32) is arranged at the center of the mineralizing cover plates (33), a pushing wheel (30) is arranged in the upper guide cylinder (32), a stirring transmission mechanism (16) extends into a space between the mineralizing cover plates (33) and the discharging bottom plate (35) through a transmission shaft, mineralizing wheels (34) are arranged in the space between the mineralizing cover plates (33) and the discharging bottom plate (35), and mineralizing holes are arranged on the discharging bottom plates (35).
2. The fluid-based enhanced hybrid separation system of claim 1, wherein: the multiple injection pipes arranged between the forced mixing tempering device (5) and the multiple dispersing pipelines are respectively an injection impact pipe (18) and an injection staggered pipe (19) which are alternately arranged.
3. The fluid-based enhanced hybrid separation system of claim 1, wherein: the multi-branch mineralization pipes arranged between the dispersion pipeline and the turbulent mineralization reactor (7) comprise cross-flow pre-mineralization pipes (20) and impinging stream pre-mineralization pipes (21) which are alternately arranged, wherein the cross-flow pre-mineralization pipes (20) and the impinging stream pre-mineralization pipes (21) are respectively provided with a first microbubble generator (22), and the inner wall of the turbulent mineralization reactor (7) is provided with a plurality of vortex generators (23) with raised structures.
4. The fluid-based enhanced hybrid separation system of claim 1, wherein: a ring plate (26) is arranged on the outer side of the ring generator (12), a gap is reserved between the ring plate (26) and the outer wall on the bottom plate (24), a plurality of ring-flow injection cavities (27) are arranged on the ring generator (12), ring-flow is generated through spray holes on the ring-flow injection cavities (27), an outer cylinder wall (25) is arranged between the inner ring of the ring generator (12) and the middling tailing type separator, and the outlet direction of the injection cavities is along the inner wall of the ring plate; a feeding hole is arranged above the circulation injection cavity (27) and is connected with an outlet pipe of the injection diverter (8); an ore pulp distributor (11) is arranged in the middle of the bottom plate (24), the ore pulp distributor (11) is of a cylindrical structure, and the outer cylinder wall (25) is 0.5-1.0m higher than the bottom plate (24).
5. A separation method using the fluid-based enhanced hybrid separation system of claim 1, characterized by the steps of:
a. firstly, ore pulp and medicament are fed into a forced mixing conditioner (5) through a forced mixing conditioner feed port (A) by a pipeline, then flow out of a circulating ore pulp outlet (C) and are fed into the forced mixing conditioner through a circulating pump (6) from a forced mixing conditioner distribution tank inlet (D), the ore pulp and the medicament are sprayed into the forced mixing conditioner (5) at a high speed through a jet impact pipe (18) and a jet cross flow pipe (19), the adsorption of the medicament on the surfaces of mineral particles of the ore pulp is enhanced under the action of the high-speed impact flow and the forced shearing cross flow in the spraying process, the circulating ore pulp is subjected to multiple circulating mixing conditioning in a system through the circulating pump (6), and the conditioned ore pulp is discharged through a conditioning ore pulp outlet (B) and is fed into a turbulent mineralizing reactor (7) through a pipeline;
b. the conditioned ore pulp enters an ore pulp disperser from a feed inlet (E) of a turbulence mineralization reactor, is fed into the turbulence mineralization reactor (7) through cross flow pre-mineralization pipes (20) and impinging stream pre-mineralization pipes (21) which are alternately arranged on a dispersing pipeline, is mixed with air through a first microbubble generator (22) while being fed into the turbulence mineralization reactor (7), and realizes high-efficiency collision of fine particles and bubbles in a forced turbulence environment mainly comprising high-speed impinging stream and forced shearing stream by air, ore pulp and coal particle three-phase systems in the ore pulp in the turbulence mineralization reactor (7), and is discharged from a discharge outlet (F) of the turbulence mineralization reactor after enhancing the efficiency and capacity of floatation mineralization reaction and is fed into a feed inlet (G) of a jet splitter through a pipeline;
c. feeding ore pulp into an injection diverter (8) through an injection diverter feed inlet (G), feeding the ore pulp into a circulation generator (12) through the injection diverter (8) from a plurality of pipelines, spraying the ore pulp from a circulation injection cavity (27) of the circulation generator (12) to form circulation between an outer cylinder wall (25) and a ring plate (26), further strengthening the flotation recovery effect on hard-to-float particles, discharging an underflow product separated by a centrifugal flotation separator (13) as final tailings from a tailings outlet (K) of the circulation flotation separator, discharging separated middlings from a middlings outlet (J) and feeding the middlings into a forced mixing conditioner feed inlet (A) through a pipeline, feeding the discharged tailings pulp into a centrifugal flotation separator feed inlet (M) through a pipeline, collecting overflowed foam from a foam tank of the flotation separator at the top of the circulation flotation separator (10), and discharging the underflow product from a foam tank outlet (I) of the circulation flotation separator as concentrate product;
d. the tailing pulp is fed into the centrifugal flotation separator (13) from a feeding hole (M) of the centrifugal flotation separator to enter an upper guide cylinder (32), and is pushed by a pushing wheel (30) to enter a space between a mineralization cover plate (33) and a discharge bottom plate (35), at this time, a centrifugal mineralization wheel (34) in the space rotates under the drive of a stirring transmission mechanism (16) through a transmission shaft, so that the tailing pulp continuously generates ascending buoyancy in the tailing pulp along a rectangular pulp dispersion plate (31) and a guide inverted cone (28) under the action of the centrifugal mineralization wheel (34), a foam layer is generated at the top of the ascending tailing pulp, finally, the foam layer is discharged from a foam outlet (L) of the centrifugal flotation separator of the foam tank of the centrifugal flotation separator, and is fed into a feeding hole (H) of the circulation flotation separator through a pipeline, the tailing pulp of the centrifugal flotation separator (13) attached to the discharge bottom plate (35) is refractory particles, one part of the refractory particles flows out through a discharge hole on the discharge bottom plate (35), the other part of refractory particles are discharged from a centrifugal flotation separator outlet (N) of a gas dispersion box (17) under the action of the centrifugal mineralization wheel, and the other part of refractory particles are continuously sucked into the centrifugal mineralization wheel (34) through the centrifugal mineralization wheel (34) when the centrifugal force is sucked into the centrifugal mineralization wheel (34) under the rotary drum through the guide cylinder (29), and the refractory particles are dispersed in the ore pulp for continuous circulation.
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