CN108339673A - A kind of cavitation jet flotation bubble generator and flotation unit - Google Patents
A kind of cavitation jet flotation bubble generator and flotation unit Download PDFInfo
- Publication number
- CN108339673A CN108339673A CN201810138566.9A CN201810138566A CN108339673A CN 108339673 A CN108339673 A CN 108339673A CN 201810138566 A CN201810138566 A CN 201810138566A CN 108339673 A CN108339673 A CN 108339673A
- Authority
- CN
- China
- Prior art keywords
- flotation
- diffuser
- cavitation jet
- bubble generator
- venturi mixer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005188 flotation Methods 0.000 title claims abstract description 81
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 16
- 239000011707 mineral Substances 0.000 claims abstract description 16
- 239000012141 concentrate Substances 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 3
- 235000010627 Phaseolus vulgaris Nutrition 0.000 abstract description 4
- 244000046052 Phaseolus vulgaris Species 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 4
- 238000009291 froth flotation Methods 0.000 abstract description 4
- 230000033558 biomineral tissue development Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000013019 agitation Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- 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
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Paper (AREA)
Abstract
The present invention relates to flotation unit technical fields, specially a kind of cavitation jet flotation bubble generator and flotation unit, solving the problems, such as can not effectively to overcome in existing froth flotation mineral Bed for Fine Coal and mineral to collide, mineralising efficiency is low and poor selectivity, specially a kind of flotation unit with cavitation jet flotation bubble generator, cavitation jet flotation bubble generator includes feeding pipe, pressure-air air inlet pipe, trunnion, diffuser, venturi mixer and air intake duct, the side wall of feeding pipe is provided with pressure-air air inlet pipe, pan feeding bottom of the tube is connected with diffuser, diffuser screw top is connected with trunnion, diffusion bottom of the tube is provided with connecting tube, connecting tube lower part is provided with venturi mixer, venturi mixer is plugged in downcomer, venturi mixer is provided with air intake duct close to the side wall of diffuser.The present invention realizes the function of the non-collision mineralization flotation of fine beans and mineral grain so that the rate of recovery of subsieve flotation obtains synchronous raising with selectivity.
Description
Technical field
The present invention relates to flotation unit technical field, specially a kind of cavitation jet flotation bubble generator and flotation dress
It sets.
Background technology
Froth flotation is a kind of universal method of sorting mined material in the ore pulp from microfine, is had using the flotation device of froth flotation
Mechanical agitation is flotation device and air jet flotation machine, and wherein agitation impeller flotator makes gas by the dissection of agitator arm
Bubble, which crushes, generates foam, and foam size is larger, about 1~3mm, and the mineralising mode of particle and bubble mainly collides mineralising, micro-
Particulate collision mineralising efficiency is low, poor selectivity;Air jet flotation machine is then the principle sucking sky that negative pressure is generated using ore pulp injection
Gas inflates ore pulp and generates foam to carry out FLOTATION SEPARATION, due to generating negative pressure when this flotation device ore pulp sprays, sucking
While air, the gas dissolved in ore pulp can also be precipitated in the form of microvesicle, enhances subsieve flotation process, thus micro-
Bed for Fine Coal and mineral floating field are used widely, it is considered to be the substitute technology equipment of agitation impeller flotator, injection
The representative type of formula flotation device is one kind " air jet flotation machine " that Chinese invention patent 92229333.3 discloses, the flotation device
With injecting type agitating device instead of traditional mechanical stirring device, to make the separating effect of fine beans be improved.
Although the bubble particle size that air jet flotation machine generates is less than agitation impeller flotator, under the conditions of certain aeration quantity
The gas-liquid interface area contacted for particle bubble is improved, and then the collision mineralising for improving particle bubble to a certain extent is general
Rate, but for fine mineral particle, since ore particle inertia is small, the efficiency for colliding mineralising is low, and is easy to carry under one's arms and be made in the foam to concentrate
At pollution, the grade of flotation concentrate is reduced.
Therefore, design is a kind of ensureing the conventional grade efficiency of separation simultaneously, and fine beans and mineral can effectively be overcome to collide
Mineralising efficiency is low and the novel floatation equipment of poor selectivity, is an industry field technical barrier urgently to be resolved hurrily.
Invention content
The present invention is in order to solve effectively overcome in existing froth flotation mineral Bed for Fine Coal and mineral to collide mineralising efficiency
The problem of low and poor selectivity, provides a kind of cavitation jet flotation bubble generator and flotation unit.
The present invention is achieved through the following technical solutions:A kind of cavitation jet flotation bubble generator, including feeding pipe,
Pressure-air air inlet pipe, trunnion, diffuser, venturi mixer and air intake duct, feeding pipe top are provided with flange, feeding pipe
Side wall is provided with pressure-air air inlet pipe, and pan feeding bottom of the tube is connected with diffuser, and the central cavity of diffuser is up-narrow and down-wide
Grading structure, diffuser screw top are connected with trunnion, and diffusion bottom of the tube is provided with connecting tube, and connecting tube lower part is provided with literary mound
In mixer, venturi mixer is plugged in downcomer, and venturi mixer is provided with air intake duct close to the side wall of diffuser.
The diameter of trunnion is the 1/2~1/3 of pan feeding pipe diameter, and trunnion is more than at a distance from pressure-air air inlet pipe upper surface
The diameter of feeding pipe, diffuser lower face between venturi mixer at a distance from be 1~1.5 times of diffuser lower face diameter,
The minimum diameter of venturi mixer is 1.2~2 times of diffuser lower face diameter.
The gas pressure applied in pressure-air air inlet pipe is 300~400kPa, and gas flow is dosed by feeding pipe
The 2%~3% of mineral slurry flux.
A kind of cavitation jet flotation unit, including cavitation jet flotation bubble generator, flotation cell and concentrate overflow launder, it is empty
Change jet stream flotation bubble generator lower part and be provided with downcomer, downcomer bottom is connected with ore pulp dispensing head, ore pulp dispensing head and
Downcomer is arranged in flotation cell, and flotation cell lower part is provided with tailing outlet port, and concentrate overflow launder, concentrate are provided on the outside of flotation cell
Overflow launder is provided with concentrate outflow port.
Uniformly divided by the ore pulp dispensing head for being connected to downcomer by the inflation ore pulp of cavitation jet flotation bubble generator
In the section of flotation cell, mineral laden bubble carries concentrate and enters concentrate overflow launder and enter next process by concentrate outflow port cloth, not
The particle of mineralising enters next process with flow of slurry by the tailing outlet port of flotation trench bottom.
The present invention has an advantageous effect in that compared with prior art:
The present invention provides a kind of cavitation jet flotation bubble generator can be suitably used for fine beans and mineral floating and flotation
Device can generate conventional flotation bubble in the micro-nano air pocket of hydrophobic particle surfaces in-situ preparation and simultaneously, realize microfine
The function of the non-collision mineralization flotation of coal and mineral grain so that the rate of recovery of subsieve flotation with selectivity synchronize carried
It is high.
Description of the drawings
Fig. 1 is cavitation jet stream flotation bubble generator architecture schematic diagram of the present invention;
Fig. 2 is a kind of cavitation jet flotation bubble generator and flotation unit structural schematic diagram of the present invention.
In figure:1- cavitation jet flotation bubble generators, 2- downcomers, 3- ore pulp dispensing heads, 4- flotation cells, 5- concentrate overflow
Chute, 6- concentrate outflow ports, 7- tailing outlet ports, 8- feeding pipes, 9- trunnions, 10- diffusers, 11- pressure-air air inlet pipe,
12- connecting tubes, 13- venturi mixers, 14- air intake ducts.
Specific implementation mode
Invention is further elaborated referring to Figures 1 and 2, a kind of cavitation jet flotation bubble generator, including pan feeding
Pipe 8, pressure-air air inlet pipe 11, trunnion 9, diffuser 10, venturi mixer 13 and air intake duct 14,8 top setting of feeding pipe
There are flange, the side wall of feeding pipe 8 to be provided with pressure-air air inlet pipe 11,8 bottom of feeding pipe is connected with diffuser 10, diffuser 10
Central cavity be up-narrow and down-wide grading structure, 10 screw top of diffuser is connected with trunnion 9, and 10 bottom of diffuser is provided with
Connecting tube 12,12 lower part of connecting tube are provided with venturi mixer 13, and venturi mixer 13 is plugged in downcomer 2, literary mound
In mixer 13 side wall of diffuser 10 is provided with air intake duct 14.
The diameter of trunnion 9 is the 1/2~1/3 of 8 diameter of feeding pipe, trunnion 9 and 11 upper surface of pressure-air air inlet pipe away from
From the diameter more than feeding pipe 8,10 lower face of diffuser between venturi mixer 13 at a distance from for 10 lower face of diffuser it is straight
1~1.5 times of diameter, the minimum diameter of venturi mixer 13 are 1.2~2 times of 10 lower face diameter of diffuser.Pressure-air
The gas pressure applied in air inlet pipe 11 is 300~400kPa, and gas flow by feeding pipe 8 dose mineral slurry flux 2%~
3%。
A kind of cavitation jet flotation unit, including cavitation jet flotation bubble generator 1, flotation cell 4 and concentrate overflow launder
5,1 lower part of cavitation jet flotation bubble generator is provided with downcomer 2, and 2 bottom of downcomer is connected with ore pulp dispensing head 3, ore pulp
Dispensing head 3 and downcomer 2 are arranged in flotation cell 4, and 4 lower part of flotation cell is provided with tailing outlet port 7, and 4 outside of flotation cell is provided with
Concentrate overflow launder 5, concentrate overflow launder 5 are provided with concentrate outflow port 6.By the inflation mine of cavitation jet flotation bubble generator 1
Slurry is evenly distributed on the section of flotation cell 4 by the ore pulp dispensing head 3 for being connected to downcomer 2, and mineral laden bubble carries concentrate and enters essence
Mine collecting tank 5 enters next process by concentrate outflow port 6, and the particle of non-mineralising is with flow of slurry by the tail of 4 bottom of flotation cell
Mine outlet 7 enters next process.
A kind of described cavitation jet flotation bubble generator and flotation unit according to the present invention, when work, feeding pipe 8
By flanged joint transfer pipeline, the ore pulp that pressure is 0.18~0.3MPa is floating from upper feeding pipe 8 into cavitation jet at top
Bubble generator 1 is selected, while air is pressed by pressure-air air inlet pipe 11, pressure-air is mixed with ore pulp, when flowing through trunnion 9,
Since local static pressure reduces suddenly at trunnion 9, the gas in ore pulp is a large amount of in the form of micro-nano air pocket in hydrophobic particle surfaces
It is precipitated, is attached to hydrophobic particulate surface, the ore pulp containing micro-nano air pocket is sprayed through diffuser high speed, in the company with downcomer 2
The place of connecing forms negative pressure, and air enters downcomer 2 through air intake duct self-priming and since the tearing of the high intensity turbulent flow of ore pulp is at microvesicle, adheres to
There are the hydrophobic granule of micro-nano air pocket and microvesicle to collide in the high turbulent environment of downcomer 2 mineralising, forms particle bubble gas
Floc sedimentation is evenly distributed on the section of flotation cell 4 via the ore pulp dispensing head 3 of 2 lower part of downcomer;Particle bubble gas floc sedimentation is in flotation
It rises and floats in slot 4, and froth bed is formed on 4 top of flotation cell, further enter concentrate overflow launder 5 through downflow weir, finally by concentrate
Outflow port 6 enters next process, and the particle of non-mineralising enters lower one of flow chart through flotation trench bottom tailing outlet port 7,
So far floatation process is completed.
Claims (5)
1. a kind of cavitation jet flotation bubble generator, it is characterised in that:Including feeding pipe(8), pressure-air air inlet pipe(11)、
Trunnion(9), diffuser(10), venturi mixer(13)And air intake duct(14), feeding pipe(8)Top is provided with flange, pan feeding
Pipe(8)Side wall be provided with pressure-air air inlet pipe(11), feeding pipe(8)Bottom is connected with diffuser(10), diffuser(10)
Central cavity be up-narrow and down-wide grading structure, diffuser(10)Screw top is connected with trunnion(9), diffuser(10)Bottom
It is provided with connecting tube(12), connecting tube(12)Lower part is provided with venturi mixer(13), venturi mixer(13)It is plugged in
Downcomer(2)It is interior, venturi mixer(13)Close to diffuser(10)Side wall be provided with air intake duct(14).
2. a kind of cavitation jet flotation bubble generator according to claim 1, it is characterised in that:Trunnion(9)Diameter
It is feeding pipe(8)The 1/2~1/3 of diameter, trunnion(9)With pressure-air air inlet pipe(11)The distance of upper surface is more than feeding pipe
(8)Diameter, diffuser(10)Lower face and venturi mixer(13)Between distance be diffuser(10)The 1 of lower face diameter
~1.5 times, venturi mixer(13)Minimum diameter be diffuser(10)1.2~2 times of lower face diameter.
3. a kind of cavitation jet flotation bubble generator according to claim 1, it is characterised in that:Pressure-air air inlet pipe
(11)The gas pressure of interior application is 300~400kPa, and gas flow is feeding pipe(8)The 2% of dosed mineral slurry flux~
3%。
4. a kind of cavitation jet flotation unit, it is characterised in that:Including cavitation jet flotation bubble generator(1), flotation cell(4)
With concentrate overflow launder(5), cavitation jet flotation bubble generator(1)Lower part is provided with downcomer(2), downcomer(2)Bottom connects
It is connected to ore pulp dispensing head(3), ore pulp dispensing head(3)And downcomer(2)It is arranged in flotation cell(4)It is interior, flotation cell(4)Lower part is provided with
Tailing outlet port(7), flotation cell(4)Outside is provided with concentrate overflow launder(5), concentrate overflow launder(5)It is provided with concentrate outflow port
(6).
5. a kind of cavitation jet flotation unit according to claim 4, it is characterised in that:By cavitation jet flotation bubble
Generator(1)Inflation ore pulp by being connected to downcomer(2)Ore pulp dispensing head(3)It is evenly distributed on flotation cell(4)Section,
Mineral laden bubble carries concentrate and enters concentrate overflow launder(5)By concentrate outflow port(6)Into next process, the particle of non-mineralising with
Flow of slurry is by flotation cell(4)The tailing outlet port of bottom(7)Into next process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810138566.9A CN108339673B (en) | 2018-02-10 | 2018-02-10 | Cavitation jet flow flotation bubble generator and flotation device |
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CN201810138566.9A CN108339673B (en) | 2018-02-10 | 2018-02-10 | Cavitation jet flow flotation bubble generator and flotation device |
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Publication Number | Publication Date |
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CN108339673A true CN108339673A (en) | 2018-07-31 |
CN108339673B CN108339673B (en) | 2023-11-21 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109092092A (en) * | 2018-09-30 | 2018-12-28 | 深圳市享宝科技有限公司 | Micro-nano bubble generator |
CN109821664A (en) * | 2019-03-22 | 2019-05-31 | 山东森科重工机械有限公司 | A kind of flotation cone recycling subparticle cleaned coal device |
CN110876988A (en) * | 2019-12-11 | 2020-03-13 | 太原睿孚特选煤技术有限公司 | Circulation volume automatic compensation pan feeding volume fluctuation's cavitation jet microbubble flotation column |
CN111663040A (en) * | 2020-06-22 | 2020-09-15 | 中南大学 | Method for enhancing oxygen oxidation iron removal in solution by using microbubble generator |
CN113371787A (en) * | 2021-06-24 | 2021-09-10 | 浙江工业大学 | Gas-driven cavitation system and method |
CN113477412A (en) * | 2021-06-16 | 2021-10-08 | 昆明基元科技有限公司 | High-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column |
WO2023070832A1 (en) * | 2021-10-26 | 2023-05-04 | 江苏大学 | Multi-channel venturi tube hydrodynamic cavitation generation device |
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CN208244961U (en) * | 2018-02-10 | 2018-12-18 | 太原理工大学 | A kind of cavitation jet flotation bubble generator and flotation unit |
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WO1995027557A1 (en) * | 1994-04-12 | 1995-10-19 | Ekokehitys Oy | Method of generating gas bubbles in a liquid and apparatus for the implementation of the method |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109092092A (en) * | 2018-09-30 | 2018-12-28 | 深圳市享宝科技有限公司 | Micro-nano bubble generator |
CN109821664A (en) * | 2019-03-22 | 2019-05-31 | 山东森科重工机械有限公司 | A kind of flotation cone recycling subparticle cleaned coal device |
CN110876988A (en) * | 2019-12-11 | 2020-03-13 | 太原睿孚特选煤技术有限公司 | Circulation volume automatic compensation pan feeding volume fluctuation's cavitation jet microbubble flotation column |
CN111663040A (en) * | 2020-06-22 | 2020-09-15 | 中南大学 | Method for enhancing oxygen oxidation iron removal in solution by using microbubble generator |
CN113477412A (en) * | 2021-06-16 | 2021-10-08 | 昆明基元科技有限公司 | High-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column |
CN113477412B (en) * | 2021-06-16 | 2023-10-20 | 基元科技(云南)有限公司 | High-efficiency energy-saving middling negative pressure circulation jet flow micro-bubble flotation column |
CN113371787A (en) * | 2021-06-24 | 2021-09-10 | 浙江工业大学 | Gas-driven cavitation system and method |
WO2023070832A1 (en) * | 2021-10-26 | 2023-05-04 | 江苏大学 | Multi-channel venturi tube hydrodynamic cavitation generation device |
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