WO2013020271A1 - Procédé et dispositif de flottation pour la séparation de résidus et leur utilisation - Google Patents

Procédé et dispositif de flottation pour la séparation de résidus et leur utilisation Download PDF

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Publication number
WO2013020271A1
WO2013020271A1 PCT/CN2011/078154 CN2011078154W WO2013020271A1 WO 2013020271 A1 WO2013020271 A1 WO 2013020271A1 CN 2011078154 W CN2011078154 W CN 2011078154W WO 2013020271 A1 WO2013020271 A1 WO 2013020271A1
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Prior art keywords
tailings
flotation
spiral
chamber
split
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PCT/CN2011/078154
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English (en)
Chinese (zh)
Inventor
曾兴民
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株洲市兴民科技有限公司
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Priority to PCT/CN2011/078154 priority Critical patent/WO2013020271A1/fr
Publication of WO2013020271A1 publication Critical patent/WO2013020271A1/fr

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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
    • 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
    • B03D1/24—Pneumatic

Definitions

  • the invention relates to a method and a device for beneficiation and a use thereof, in particular to a flotation method and device and a use thereof for the shunt tailings improved based on the flotation principle, and belongs to the technical field of flotation.
  • the well-known flotation method has two implementation devices:
  • the flotation chamber of the flotation column has a slurry inlet to be selected in the upper middle part of the wall surface, and the open top is a mineralized bubble outlet, and the tail end is provided with a tailings outlet and a bubble generating device.
  • the bubbles produced by the bubble generating device collide with the to-be-selected slurry in the process of floating to the slurry, and adsorb the target particles to realize bubble mineralization.
  • the mineralized bubbles float up to the mineralized bubble enrichment area and are enriched, overflowing the mineralized bubble outlet, and producing concentrate.
  • Non-target particles that are not adsorbed by bubbles their coarse and heavy particles quickly sink to the tailings outlet, producing tailings; their fine and light particles collide with bubbles or mineralized bubbles in reverse, are pulled up and floated, forming up and down The flow state slowly sinks to the tailings outlet and produces tailings. It can be seen that during the flotation of the flotation column, the tailings are preferentially adsorbed by the bubbles, and the tailings are the tailings outlets from the flotation chamber to the bottom of the flotation chamber.
  • the second is a flotation machine (or flotation cell).
  • the flotation chamber of the flotation machine has at least one tailings outlet at the wall surface and/or the bottom thereof, and the open top is a mineralized bubble outlet, and the bottom of the flotation is provided with a slurry inlet and a floating device (including a rotor and a stator). , hollow shaft and bubble generating device). The compressed air is introduced through the hollow shaft, and bubbles are generated in the set gas field in the floating device to realize bubble mineralization.
  • the floating device discharges the slurry, and the bubble mineralization continues to occur in the flotation chamber and the gas-solid separation is realized: the mineralized bubble floats up to the mineralized bubble enrichment zone to enrich, overflows the mineralized bubble outlet, and produces the concentrate.
  • Non-target particles that are not adsorbed by bubbles, their coarse and heavy particles quickly sink to the tailings outlet, producing tailings; their fine and light particles collide with bubbles or mineralized bubbles in reverse, are pulled up and floated, forming up and down
  • the flow state slowly sinks to the tailings outlet and produces tailings. It can be seen that during the flotation process of the flotation machine, the target particles are preferentially adsorbed by the bubbles, and the tailings are the tailings outlets from the flotation chamber directly to the wall and/or bottom of the flotation chamber.
  • the tailings are the tailings outlet from the flotation chamber directly to the wall and/or bottom of the flotation chamber.
  • the obvious defect is: when the slurry to be selected contains fine and light non-target particles with a large specific gravity, especially when the target particles are close to the non-target particles, the tailings settle and split (exit the flotation chamber). It will slow down, the tailings will stay in the flotation chamber for a long time, the concentration of tailings in the flotation chamber will increase, and the probability of mineralized bubbles being contaminated by tailings will increase, and the tailings will entrain bubbles and mineralization. The probability of bubbles increases, the quality and yield of mineralized bubbles decrease, and the flotation effect decreases.
  • the object of the present invention is to provide a method for realizing the rapid diversion of tailings, shortening the residence time of tailings in the flotation chamber, and improving the utilization efficiency of the flotation chamber volume, in view of the inefficiency of the prior tailings diversion method.
  • a flotation method for splitting tailings that enhances the quality and yield of mineralized bubbles and mitigates the cavitation effects of the post-transport process.
  • Another object of the present invention is to provide a flotation apparatus for realizing the above-described split tailings flotation method.
  • Another object of the invention is to provide a use of the above-described split tailings flotation method and apparatus.
  • the technical scheme adopted by the invention is: a flotation method for splitting tailings, which is characterized in that: a spiral channel is used to split tailings, and more than one spiral channel for slurry enrichment and splitting is arranged on the inner wall surface of the flotation chamber.
  • the tailings are enriched and diverted through the spiral channel and floated.
  • the flotation is to place the tailings in a flotation chamber provided with a spiral passage in the wall surface of the flotation chamber, so that the tailings enter the flotation chamber and then enrich and divert the spiral passage; the outflow slurry
  • the inertial force flows upward through the spiral, so that the mineralized bubbles tend to float upward in the central region of the flotation chamber, and at the same time, the tailings sink to the vicinity of the inner wall of the flotation chamber; the tailings are in gravity and Under the action of centrifugal force, it sinks along the spiral channel to the bottom of the channel; at the same time, the helix angle of the bottom surface of the channel of the spiral channel is larger than the angle of repose of the tailings in the outflow slurry; the tailings settled to the bottom of the channel, along the spiral channel
  • the downward flow causes the tailings entering the area near the inner wall of the flotation chamber to be gradually enriched in the spiral passage, thereby vacating the new tailings of the
  • the bubbles and mineralized bubbles entrained into the spiral channel by the tailings are squeezed out by the tailings ore layer, thereby effectively eliminating the entrainment of the tailings to the bubbles and mineralized bubbles; thereby realizing the flotation of the tailings using spiral channels process.
  • the spiral passage, the top end (starting end) of the spiral passage is disposed below the slurry surface set by the flotation chamber, and the bottom end of the spiral passage ends at the lower portion of the flotation chamber.
  • the cross section of the spiral passage is a grooved (U-shaped) structure, and the bottom surface of the spiral passage groove is spirally arranged on the inner wall of the flotation chamber, and the spiral angle of the spiral passage is larger than the angle of repose of the tailings in the outflow slurry;
  • the spiral path of the top end (end) of the channel is in the same direction as the swirling trajectory of the outflow slurry (either clockwise or counterclockwise).
  • At least one tailings outlet is provided on the wall surface of the corresponding flotation chamber.
  • Each of the spiral passages may be continuous or intermittent; if it is intermittent, the bottom end of the upper spiral passage communicates with an adjacent spiral passage.
  • An ultrasonic generating device is arranged around the flotation chamber, and the ultrasonic wave generated by the ultrasonic generating device is emitted into the flotation chamber; when the tailings enter the flotation chamber, the flotation is performed, and the ultrasonic wave is received.
  • the irradiation causes the flotation process of the split tailings in the spiral channel to become a sweeping process.
  • a device for realizing the above method adopting a spiral channel split tailing flotation device, comprising a flotation chamber and a floating device, characterized in that: more than one is used for enrichment and diversion of the slurry in the wall surface of the flotation chamber. Spiral channel.
  • the cross section of the spiral passage is a groove shape, and the spiral passage is spirally arranged on the inner wall surface of the flotation chamber, and the helix angle is larger than the angle of repose of the tailings in the outflow slurry.
  • the spiral passages are more than one, and the plurality of spiral passages may be arranged parallel to each other on the inner wall surface of the flotation chamber;
  • the flotation chamber is a cylindrical structure, and a floating device is arranged at the bottom of the cylindrical structure.
  • the floating device comprises a floating chamber, a spiral rotor, a driving device and a base, which are arranged in a central region of the bottom of the flotation chamber.
  • the top of the floating chamber is an open structure, and a circulating slurry outlet of the annular structure is arranged at the top of the floating chamber, and at least one inlet of the slurry to be selected is provided at the bottom of the floating chamber.
  • a driving device is arranged under the spiral rotor, and more than one spiral gas field is generated when the spiral rotor rotates.
  • the driving device is disposed outside the bottom of the floating chamber, and the hollow shaft of the spiral rotor passes through the bottom of the floating chamber.
  • More than one ultrasonic generating device is arranged on the outer wall surface of the flotation chamber, and the ultrasonic wave emitted by the ultrasonic generating device is emitted into the flotation chamber, so that the flotation process of the split tailings in the spiral passage becomes a process with ultrasonic sweeping.
  • spiral channel split tailings flotation method and device the spiral channel split tailings flotation method and device can be applied to all mineral flotation processes.
  • the technical principle of the invention is that at least one spiral channel is arranged on the wall surface of the interior of the flotation chamber.
  • the inertial force of the spiral upward flow by the floating device causes the mineralized bubble to float toward the central region of the flotation chamber, so that the tailings tend to sink toward the vicinity of the inner wall of the flotation chamber.
  • the tailings fall into the spiral channel, the tailings are constrained by the spiral channel, which tends to sink and enrich the channel bottom, and diverts along the spiral channel to the tailings outlet, so that the concentration of tailings in the vicinity of the inner wall of the flotation chamber is rapidly reduced.
  • the new tailings in the central part of the flotation chamber leaps out a diffusion space with a large difference in concentration, which in turn causes the tailings concentration in the central portion of the flotation chamber to rapidly decrease, and the residence time of the tailings in the flotation chamber is greatly shortened.
  • the bubbles and mineralized bubbles entrained into the spiral channel by the tailings are squeezed out by the gradually thickened tailings layer, effectively eliminating the entrainment of the tailings to the bubbles and mineralized bubbles. This achieves a flotation process using a spiral channel to split the tailings.
  • a spiral channel is arranged on the inner wall surface of the flotation chamber, so that the tailings settle and enrich and directional shunt in the spiral channel by the centrifugal force provided by the outflow slurry, thereby shortening the residence time of the tailings in the flotation chamber and reducing the tail.
  • the concentration of the ore in the flotation chamber reduces the probability of mineralized bubbles being contaminated by tailings, which is conducive to improving the quality of mineralized bubbles.
  • the downward path of the spiral channel is in the same direction as the swirling trajectory of the outflowing slurry, so that the flotation chamber forms a slurry flow field that promotes the rapid diversion of the tailings, which provides a high-efficiency desilting flotation environment for high-density ore flotation.
  • the invention is applicable to all flotation methods and applications.
  • Figure 1 is a flotation device using a spiral channel to split tailings.
  • Figure 2 is a flotation device with multiple tailings outlets.
  • Figure 3 is a flotation device provided with a plurality of spiral passages.
  • Figure 4 is a flotation apparatus using ultrasonic enhanced tailings split.
  • Fig. 1 concentrate groove; 2, spiral channel; 3, mineralized bubble enrichment zone; 4, slurry surface; 5, channel bottom surface; 6, flotation chamber; 7, mineralized bubble outlet; 8, water spray device; 9, flotation device; 10, tailings slurry; 11, tailings outlet; 12, lifting device; 13, driving device; 14, compressed air; 15, compressed air inlet; 16, base; , to be selected pulp; 18, to be selected slurry import; 19, lifting chamber; 20, spiral rotor; 21, spiral gas field; 22, outflow slurry outlet; 23, steady flow device; 24, outflow slurry; , concentrate slurry; 26, concentrate export; 27, tailings slurry; 28, tailings export; 29, tailings slurry; 30, tailings outlet; 31, spiral channel; 32, spiral channel; 33, tailings slurry; Tailing slurry; 35, ultrasonic generating device.
  • Embodiment 4 is a preferred embodiment.
  • the present invention relates to a flotation method for split tailings, which is characterized in that: spiral passage shunt tailings are used, and more than one spiral for slurry enrichment and splitting is arranged on the inner wall surface of the flotation chamber.
  • the channel allows the tailings to be enriched and diverted through the spiral channel and floated.
  • the flotation is to place the tailings in a flotation chamber provided with a spiral passage in the wall surface of the flotation chamber, so that the tailings enter the flotation chamber and then enrich and divert the spiral passage; the outflow slurry
  • the inertial force flows upward through the spiral, so that the mineralized bubbles tend to float upward in the central region of the flotation chamber, and at the same time, the tailings sink to the vicinity of the inner wall of the flotation chamber; the tailings are in gravity and Under the action of centrifugal force, it sinks along the spiral channel to the bottom of the channel; at the same time, the helix angle of the bottom surface of the channel of the spiral channel is larger than the angle of repose of the tailings in the outflow slurry; the tailings settled to the bottom of the channel, along the spiral channel
  • the downward flow causes the tailings entering the area near the inner wall of the flotation chamber to be gradually enriched in the spiral passage, thereby vacating the new tailings of the
  • the bubbles and mineralized bubbles entrained into the spiral channel by the tailings are squeezed out by the tailings ore layer, thereby effectively eliminating the entrainment of the tailings to the bubbles and mineralized bubbles; thereby realizing the flotation of the tailings using spiral channels process.
  • the spiral passage, the top end (starting end) of the spiral passage is disposed below the slurry surface set by the flotation chamber, and the bottom end of the spiral passage ends at the lower portion of the flotation chamber.
  • the cross section of the spiral passage is a grooved (U-shaped) structure, and the bottom surface of the spiral passage groove is spirally arranged on the inner wall of the flotation chamber, and the spiral angle of the spiral passage is larger than the angle of repose of the tailings in the outflow slurry;
  • the spiral path of the top end (end) of the channel is in the same direction as the swirling trajectory of the outflow slurry (either clockwise or counterclockwise).
  • At least one tailings outlet is provided on the corresponding flotation chamber.
  • Each of the spiral passages may be continuous or intermittent; if it is intermittent, the bottom end of the upper spiral passage communicates with an adjacent spiral passage.
  • An ultrasonic generating device is arranged around the flotation chamber, and the ultrasonic wave generated by the ultrasonic generating device is emitted into the flotation chamber; when the tailings enter the flotation chamber, the flotation is performed, and the ultrasonic wave is received.
  • the irradiation causes the flotation process of the split tailings in the spiral channel to become a sweeping process.
  • a device for realizing the above method adopting a spiral channel split tailing flotation device, comprising a flotation chamber and a floating device, characterized in that at least one piece for the enrichment and diversion of the slurry is provided on the inner wall surface of the flotation chamber. Spiral channel.
  • the cross section of the spiral passage is a groove shape, and the spiral passage is spirally arranged on the inner wall surface of the flotation chamber, and the helix angle is larger than the angle of repose of the tailings in the outflow slurry.
  • the flotation chamber is a cylindrical structure, and a floating device is arranged at the bottom of the cylindrical structure.
  • the floating device comprises a floating chamber, a spiral rotor, a driving device and a base, which are arranged in a central region of the bottom of the flotation chamber.
  • the top of the floating chamber is an open structure, and a circulating slurry outlet of the annular structure is arranged at the top of the floating chamber, and at least one inlet of the slurry to be selected is provided at the bottom of the floating chamber.
  • a driving device is arranged under the spiral rotor, and more than one spiral gas field is generated when the spiral rotor rotates.
  • the driving device is disposed outside the bottom of the floating chamber, and the hollow shaft of the spiral rotor passes through the bottom of the floating chamber.
  • More than one ultrasonic wave source generating device is arranged on the outer wall surface of the flotation chamber, and the ultrasonic wave emitted by the ultrasonic wave source generating device is emitted into the flotation chamber, so that the flotation process of the split tailings in the spiral channel becomes a process with ultrasonic sweeping. .
  • spiral channel split tailings flotation method and device are applied to all mineral flotation processes, including lead-zinc ore, bauxite, copper ore, Gold ore, iron ore or rare earth ore metal ore, and flotation of graphite ore, quartz or fluorite ore.
  • Embodiment 1 A flotation device using a spiral channel to split tailings
  • the flotation device 9 shown in Fig. 1 is composed of a flotation chamber 6 and a floatation device 12, and a spiral passage 2 communicating with the tailings outlet 11 is provided on the inner wall surface of the flotation chamber 6.
  • the flotation chamber 6 has a circular mineralized bubble outlet 7 at the top of the open, surrounding the concentrate channel 1 and the water spray device 8; a tailings outlet 11 at the bottom; and a spiral channel 2 at the inner wall surface thereof
  • the bottom is a slope with a slope greater than the angle of repose of the tailings in the outflow slurry 24.
  • the floating device 12 is composed of a floating chamber 19, a spiral rotor 20, a driving device 13 and a base 16, and is disposed at the bottom of the flotation chamber 6.
  • the floating chamber 19 has a circular outflow slurry outlet 22 at its open top, a flow stabilization device 23 with an outflow slurry 24, and a slurry inlet 18 to be selected at the bottom.
  • the spiral rotor 20 is rotated at a set rotational speed to generate a spiral gas field 21. Set the speed to 300-1500 rpm.
  • the driving device 13 is provided with a compressed air inlet 15 for introducing compressed air 14 to the spiral rotor 20, and is disposed at the bottom of the flotation chamber 6, and the hollow shaft of the spiral rotor 20 passes through the bottom of the floating chamber 19.
  • a spiral passage 2 is provided in the inner wall surface of the flotation chamber 6. After the outflow slurry 24 enters the flotation chamber 6, the inertial force of the spiral upward flow by the floating device causes the mineralized bubbles to move toward the central region of the flotation chamber 6, so that the tailings tend to the vicinity of the inner wall of the flotation chamber 6. sink. When the tailings fall into the spiral channel 2, the tailings are constrained by the spiral channel 2, and the channel bottom surface 5 is sunk and enriched, and is branched along the spiral channel 2 to the tailings outlet 11 to make the tail of the area near the inner wall of the flotation chamber 6.
  • the concentration of the ore is rapidly reduced, and the new tailings in the central region of the flotation chamber 6 vacate a diffusion space with a large difference in concentration, thereby rapidly reducing the tailings concentration in the central region of the flotation chamber 6, and the tailings are in the flotation chamber.
  • the residence time in 6 is greatly shortened.
  • the bubbles and mineralized bubbles entrained into the spiral channel 2 by the tailings are squeezed out by the gradually thickened tailings layer, effectively eliminating the entrainment of the tailings to the bubbles and mineralized bubbles. This achieves a flotation process using a spiral channel to split the tailings.
  • Embodiment 2 A flotation device provided with a plurality of tailings outlets
  • Fig. 2 shows the flotation device 9 shown with a spiral passage 2 connecting the three tailings outlets 11, 28 and 30 on the inner wall surface of the flotation chamber 6.
  • the technical principle of the present invention is the same as that of the first embodiment, and its use is mainly applied to the treatment of the slurry to be selected 17 which is high in mud and has ultrafine particles.
  • a low-grade lead-zinc oxide ore contains 40% mud, which is pre-desilted by hydrocyclone cyclone grading, and lead and zinc losses are more than 20%.
  • the flotation flotation is carried out by the prior flotation device, a large amount of mud is suspended in the flotation chamber 6, and when the mineralized bubbles float up to the mineralized bubble enrichment zone 3, the mud has been seriously polluted, resulting in mineralized bubbles entraining mud. Too much, the concentrate grade is reduced. In the flotation process test with a zinc yield of 77%, the zinc concentrate grade is 22%. Continued selection improves the concentrate grade, and the zinc yield decreases. It can be seen that improving the tailings diversion method and reducing the mud concentration of the flotation chamber 6 are of great significance for improving the yield and grade of zinc concentrate.
  • the invention adopts a flotation device 9 provided with a spiral passage 2 and a plurality of tailings outlets 11, 28 and 30, which has the advantages of: sedimentation and enrichment of the slurry into the spiral passage 2 by lowering the sedimentation height of the mud, and allowing settlement and The enriched mud quickly leaves the flotation chamber 6. Tests have shown that this method of splitting ultrafine tailings is effective.
  • the above minerals are floated by a spiral channel with a plurality of tailings outlets, with a zinc yield of over 85% and a zinc grade of over 33%.
  • Embodiment 3 A flotation device provided with a multi-head spiral passage
  • the flotation device 9 shown in Fig. 3 is provided with three passage bottom surfaces 5 on the inner wall surface of the flotation chamber 6 with spiral passages 31, 32 and 2 having a slope greater than the angle of repose of the tailings in the outflow slurry 24.
  • the spiral passage 31 has a bottom end connected to the adjacent spiral passage 32, and the tail slurry 33 in the spiral passage 31 flows into the spiral passage 32 to be merged into the tailing slurry 34;
  • the spiral passage 32 has a bottom end connected to the adjacent spiral passage 2, and the spiral
  • the tailings slurry 34 in the passage 32 flows into the spiral passage 2, into the tailings slurry 10;
  • the spiral passage 2 communicates with the tailings outlet 11, and the tailings slurry 10 is discharged from the tailings outlet 11.
  • the bottom ends of the spiral passages 31, 32 and 2 can also be directly connected to the tailings outlet 11.
  • Embodiments 1 and 2 The technical principle of the present invention is the same as Embodiments 1 and 2.
  • the advantage is that a plurality of spiral passages 31, 32 and 2 are arranged, which further reduces the settlement height of the tailings, and causes the tailings to enter the spiral passages 31, 32 and 2 to settle and enrich. Its use is mainly applied to the treatment of high-sludge and ultra-fine target slurry 17 with target particles.
  • Embodiment 4 A flotation device using ultrasonic enhanced tailings split
  • the flotation device 9, shown consists of a flotation chamber 6 and a floatation device 12.
  • the mine outlet 11 has at least one spiral passage 2 on the inner wall surface thereof, and one or more ultrasonic generating devices 35 on the outer wall surface.
  • the technical principle of the present invention is to activate the ultrasonic generating device 35 to form a set ultrasonic energy field in the vicinity of the inner wall of the flotation chamber 6.
  • the tailings entering this area are impacted by the ultrasonic cavitation bubble flow at high speed, the solid particles are cleaned efficiently, the residual agent is highly dispersed, and the bubbles and mineralized bubbles entrained by the tailings are fully escaped from the tailings slurry 10, The target particles entrained in the ore are subjected to enhanced capture.
  • the ultrasonic energy field is arranged in the vicinity of the inner wall of the flotation chamber 6, which is essentially the intensified sweeping of the tailings; the process of the tailings flowing through the spiral channel 2 is essentially the N-level continuous operation of the tailings.
  • Tests have shown that the mineralized bubble production is significantly increased after the ultrasonic generating device 35 is activated under the conditions of the flotation process. It is confirmed that the use of ultrasonic enhanced tailings diversion has a significant effect on improving target particle yield, concentrate grade and flotation efficiency, and can produce the final tailings in one step, and even qualified grade concentrates, in order to realize the one-step flotation process. Provide technical support.
  • the present invention is applied to the flotation process of ultrafine particles, and a better flotation effect can be obtained.
  • a spiral channel is arranged on the inner wall surface of the flotation chamber, so that the tailings settle and enrich and directional shunt in the spiral channel by the centrifugal force provided by the outflow slurry, shortening the residence time of the tailings in the flotation chamber and reducing the tailings
  • the concentration in the flotation chamber reduces the probability of mineralized bubbles being contaminated by tailings, which is conducive to improving the quality of mineralized bubbles.
  • the downward path of the spiral channel is in the same direction as the swirling trajectory of the outflowing slurry, so that the flotation chamber forms a slurry flow field that promotes the rapid diversion of the tailings, providing a highly efficient desilting flotation environment for the high-density ore flotation.
  • the invention is applicable to the application of all flotation methods and devices, in particular to the development of a one-step flotation process, including lead-zinc ore, bauxite, copper ore, gold-silver ore, iron ore or rare earth ore metal ore, And flotation of graphite ore, quartz or fluorite ore .

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Abstract

L'invention porte sur un procédé de flottation pour la séparation de résidus comprenant : la disposition d'un canal en spirale (2) sur une surface de paroi interne d'une chambre de flottation (6), de façon à ce que les résidus soient séparés vers le canal en spirale (2) et enrichissant le canal en spirale (2) après leur entrée dans la chambre de flottation (6); après son entrée dans la chambre de flottation (6), l'écoulement d'une pulpe de minerai effluent vers le haut en spirale au moyen d'une force d'inertie, la flottation de bulles chargées de minerai vers le haut en direction d'une zone de flottation centrale, et pendant ce temps, l'enfoncement des résidus vers une zone proche de la paroi interne de la chambre de flottation (6); au moyen de la gravité des résidus et d'une force centrifuge appliquée aux résidus, l'écoulement des résidus vers le bas le long du canal en spirale (2), l'enrichissement progressif du canal en spirale (2) et la formation d'un espace de diffusion présentant une grande différence de concentration pour les résidus nouvellement produits dans la chambre de flottation (6), de façon à ce que la concentration en résidus dans la chambre de flottation (6) soit rapidement réduite et que des bulles et des bulles chargées de minerai qui entrent dans le canal en spirale avec les résidus soient extrudées et s'échappent sous l'effet de la gravité d'une couche de résidus, ce qui de cette manière élimine les bulles et les bulles chargées de minerai emportées par les résidus et met en œuvre un processus de flottation pour la séparation de résidus dans le canal en spirale (2). L'invention porte également sur un dispositif pour la mise en œuvre du procédé et sur une utilisation du procédé et du dispositif. Le procédé et le dispositif, ainsi que leur application, améliorent la qualité de bulles chargées de minerai.
PCT/CN2011/078154 2011-08-09 2011-08-09 Procédé et dispositif de flottation pour la séparation de résidus et leur utilisation WO2013020271A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115595450A (zh) * 2022-08-05 2023-01-13 昆明理工大学（Cn） 一种硫化锌经浸渣处理脱硫回收银的装置

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