CN105498981B - High-carbon fly ash flotation decarbonization process with foam stabilization characteristic - Google Patents
High-carbon fly ash flotation decarbonization process with foam stabilization characteristic Download PDFInfo
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- CN105498981B CN105498981B CN201610097054.3A CN201610097054A CN105498981B CN 105498981 B CN105498981 B CN 105498981B CN 201610097054 A CN201610097054 A CN 201610097054A CN 105498981 B CN105498981 B CN 105498981B
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- ore pulp
- flotation
- ash
- staving
- fly ash
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- 238000005188 flotation Methods 0.000 title claims abstract description 85
- 239000010881 fly ash Substances 0.000 title claims abstract description 48
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 41
- 239000006260 foam Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title abstract description 5
- 230000006641 stabilisation Effects 0.000 title abstract description 4
- 238000011105 stabilization Methods 0.000 title abstract description 4
- 238000005262 decarbonization Methods 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002956 ash Substances 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 238000004062 sedimentation Methods 0.000 claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 16
- 239000011707 mineral Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000706 filtrate Substances 0.000 claims abstract description 11
- 239000002562 thickening agent Substances 0.000 claims abstract description 9
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 239000003610 charcoal Substances 0.000 claims description 38
- 239000004567 concrete Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 239000010883 coal ash Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241000754779 Brycinus imberi Species 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 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
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/145—Feed mechanisms for reagents
-
- 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
-
- 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
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a high-carbon fly ash flotation decarbonization process with foam stabilization characteristics, which comprises the steps of feeding high-carbon fly ash raw ash slurry into a pulp preprocessor, simultaneously adding a flotation collector and a foaming agent into the pulp preprocessor together, modulating to obtain mortar with certain mass percentage concentration, then conveying the modulated mortar to a flotation column for separation, and dehydrating foam fine carbon and underflow low-carbon ash obtained by the flotation column separation through a thickener and a filter in sequence respectively to obtain fine carbon and low-carbon ash; overflow water of the thickener and filtrate of the filter automatically flow to a sedimentation tank, the overflow water in the sedimentation tank and fine-grained argillaceous minerals in the filtrate are conveyed to a pulp preprocessor for re-flotation after sedimentation, and the settled overflow water and the filtrate in the sedimentation tank are pressurized for cleaning filter cloth of the filter. The invention solves the problem of poor stability of fly ash flotation decarburized foam through the forced dispersion of the agent of the ore pulp preprocessor, the arrangement of the thick foam layer of the flotation column and the return of fine slurry, and improves the removal rate of carbon.
Description
Technical field
The present invention relates to a kind of floatation process, the poor high concrete carbon fly ash flotation of the foam stability that is particularly suitable for use in takes off charcoal.
Background technology
Flyash is the bulk solid waste discharged during Coal Energy Source is utilized, and at present, the flyash of China is stored up
About 12,000,000,000 tons of amount, wherein loss on ignition high concrete carbon fly ash not up to standard occupies suitable proportion, particularly some old generators
The wet-discharged coal ash that group or history are stored up, the problem of generally existing carbon content is exceeded has a strong impact on flyash as building material product
Quality index when using.Therefore, flotation is carried out to high concrete carbon fly ash and takes off charcoal as the effective of raising total utilization of PCA rate
Means.
The flotation of flyash takes off the problem that charcoal system has foam stability difference, and this is mainly by the mineral composition of flyash
What property was determined.Generally, as the topmost diagenetic mineral of nature, clay mineral is in all kinds of natural mineral floating systems
In still exist as main gangue mineral, due to its stronger argillization effect so that the thin mud in flotation system is often
It is that based on clay mineral, and the presence of these mineral enhances the foam stability of flotation system to a certain extent.And powder
In the mineral phase composition of coal ash based on amorphous vitreum, a small amount of crystalline mineral is also with the relatively low quartz of activity, not
Come based on stone etc., in addition, the particle's behavior of coal combustion process also causes amorphous phase material to be enriched with the fine fraction of flyash, this
A little mineral composition properties cause the foam stability of flyash flotation system poor.Therefore, how fine coal is improved from technological angle
The foam stability of grey flotation turns into the key for improving fly ash charcoal-removing efficiency.
Chinese patent 200810031473.2 discloses a kind of technique for decarbonizing fly ash with high ignition loss.The technique is included certainly
Dynamic chemicals feeder adds dispersant and composite drug, ore pulp preprocessor are mixed, flotation pillar special for fly ash is sorted, carbon granule
Distinguish the step such as concentrated machine and filter dehydration with tail ash.
Chinese patent 201110185234.4 discloses a kind of Self-air supplying coal ash flotation process.Comprise the following steps：
Flotation agent is added into powdered coal ash, mixed material is formed；Mixed material falls from the first floatation equipment top；Utilize first
Venturi tube structure on floatation equipment circulating line, sucks extraneous gas；The good particulate matter of floatability is in the presence of bubble
Motion upwards；Collect the particulate matter for moving through the first floatation equipment flotation plate upwards.
Chinese patent CN200810031474.7 discloses a kind of flotation pillar special for fly ash.Set at the top of flotation column cylinder
It is equipped with pulp distributer, cylinder and sets multistage bubbling plate, cylinder bottom sets multiple spot swirl-flow devices and the grey spout hole of multiple spot tail, ore pulp
Distributor peripheral devices ore pulp distribution pipe, around device circulating line, circulating line upper end is connected with ore pulp distribution pipe
Logical, lower end is connected with swirl-flow devices, and ore pulp distribution interface tube is connected circulating pump two ends with feed inlet and outlet respectively, in flotation column
Top is also equipped with the balanced overflow plate of high charcoal ash and high charcoal ash overflow collection mouthful, and tail ash spout hole is connected and installed with tail by pipeline
Grey automatic control stuff box.
Chinese patent CN201210258144.8 discloses a kind of cell type multi-stage flotation separation equipment for coal ash.Including strip
The channel-shaped body of shape, the channel-shaped body includes stem and afterbody, and feed(raw material)inlet is wherein provided with the top of stem, and the top of afterbody is set
There is flotation outlet；The channel-shaped body is separated at least two flotation cells by least one board plug device；Each flotation cells
Bottom is equipped with the outlet of tail ash；The equipment also includes the aerator for producing bubble, and aerator includes being installed on each flotation
Bubble diffusing apparatus in unit；Each board plug device includes that up and down weir flow plate can be adjusted, by adjusting weir flow plate
Depth adjusts the size of board plug device overflow discharge orifice.
Chinese patent CN200810143173.3 discloses a kind of new technology that activated carbon is produced with flyash.Wherein fine coal
Grey flotation link comprises the following steps：Former ash enters ore pulp preprocessor, dispersant and composite medicine after being handled through van-type tube blower
Agent adds and is added to ore pulp preprocessor through automatically adding medicine, subsequently into first order flotation column and second level flotation column, from the
Secondary floatation post sub-elects carbon contg particle, concentrated machine, filter and dryer dehydration.
Above-mentioned technical method improves the de- charcoal efficiency of flyash not from the angle of flotation froth stability is improved, and powder
Foam stabilization sex chromosome mosaicism caused by the thing phase property of coal ash particle is the key factor for causing fly ash charcoal-removing effect poor.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of height with foam stabilizing feature
The flotation of powdered carbon coal ash takes off charcoal technique, is set by the thick froth bed of the medicament Forced Dispersion of ore pulp preprocessor, flotation column and thin
The return of grain mud solves the problem that flyash flotation takes off carbon foams stability difference, and then improves the removing effect of charcoal in flyash
Rate.
Technical scheme：To achieve the above object, the technical solution adopted by the present invention is：
A kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique, and high concrete carbon fly ash former ash slurry is fed into ore pulp
Preprocessor, while flotation collector and foaming agent are added into ore pulp preprocessor in the lump, modulation obtains mass percentage concentration
15%~20% mortar, then by the slurry delivery modulated to flotation column, flotation column obtains the smart charcoal production of foam
Concentrated machine and the filter dehydration successively respectively of product and underflow low charcoal ash, obtains smart charcoal product and low charcoal ash product；The concentration
The particulate mud that the filtrate gravity flow of the overflow water and filter of machine enters in overflow water and filtrate in sedimentation basin, the sedimentation basin
It is delivered to after matter mineral precipitation in ore pulp preprocessor and re-starts flotation, the overflow after sedimentation in the sedimentation basin
The cleaning that water and filtrate are pressurizeed for filter cloth by high-pressure pump.
Further, when the froth bed thickness in flotation column reaches 800mm~1500mm, then flotation column is steeped
Foam essence charcoal product and underflow low charcoal ash are delivered to corresponding thickener and filter dehydration successively respectively.
Further, the sedimentation basin bottom is provided with slush pump, between the slush pump and the ore pulp preprocessor
By pipeline communication, the particulate shale mineral of the sedimentation basin bottom are back to ore pulp pre- in the presence of slush pump through pipeline
Processor.
Further, the ore pulp preprocessor includes ore pulp staving and ore pulp external circulating system, the ore pulp staving
Top is provided with feed pipe and discharge nozzle；Feed baffle-box and feed are fixedly installed from top to bottom along the center line of ore pulp staving
Downcomer, the feed baffle-box above and below feed downcomer with being connected, and the feed pipe is connected with feed baffle-box level；It is described
Ore pulp external circulating system includes circulation Pulp pump, annular ore pulp distributing trough, jet mixer and turbulent mixture pipe, the annular ore deposit
Slurry distributing trough is set on the outer wall of ore pulp staving, and the bottom of the ore pulp staving is connected by circulating discharge nozzle with circulation Pulp pump
Connect, the circulation Pulp pump is connected by pipeline with annular ore pulp distributing trough；Connection is some below the annular ore pulp distributing trough
Medicament entrance and valve are provided with jet mixer, each jet mixer, each jet mixer bottom of correspondence connects
Turbulent mixture pipe is connected to, the turbulent mixture pipe is tangentially connected with ore pulp staving, the ore pulp inner wall of barrel surface sets some
Baffle plate.
Further, the bottom of the ore pulp staving is the high swash plate structure in middle low periphery, and the circulation discharge nozzle is set
Put the bottom extreme lower position in ore pulp staving.The side wall of the circulation discharge nozzle is provided with accident ore drawing pipe.
Further, the jet mixer uses venturi tube structure.
The operation principle of ore pulp preprocessor：High concrete carbon fly ash former ash slurry feeds feed baffle-box through feed pipe, and
Under the drainage of feed downcomer, high concrete carbon fly ash former ash slurry is directly drained to ore pulp staving bottom；In Pulp pump
Swabbing action under, circulation high concrete carbon fly ash former ash slurry through circulate discharge nozzle enter external circulating system, the high charcoal after pressurization
Flyash former ash slurry is delivered to annular ore pulp distributing trough by the road, under 0.15~0.20Mpa high pressure effect, annular ore pulp
Ore pulp inside distributing trough comes downwards to jet mixer, produces high-pressure jet, and the shape in the vacuum chamber inside jet mixer
Into negative pressure, so that floating agent is entered into ore pulp by medicament entrance self-priming；Through the ore pulp after jet mixer immixture
Tangentially sent back to inside ore pulp staving through turbulent mixture pipe, so as to be internally formed rotation flow of slurry in ore pulp staving, rotate ore pulp
Stream can further strengthen the suspension effect and floating agent peptizaiton of ore pulp under the barrier effect of baffle plate；In operation, ore pulp
Circular flow be about 1~3 times of ore pulp feeding coal, the ore pulp after jet action tangentially enters behind ore pulp staving inside, one
Part reenters external circulating system and carries out jet mixing effect along circulation discharge nozzle is back to；Another part ore pulp is up
To discharging opening, ore pulp pre-treatment job is completed, discharge is used as floatation feed.
Further, the flotation column includes underflow automatic discharge system, and the underflow automatic discharge system includes pressure
Sensor, electric hose valve, underflow discharge pipe and PID control instrument, the pressure sensor are arranged on the barrel of flotation column,
Apart from 2000mm at the top of flotation column, the bottom of the flotation column is connected with underflow discharge pipe, and the electric hose valve is arranged on bottom
The exhaust end of delivery pipe is flowed, the PID control instrument is connected with pressure sensor and electric hose valve data transfer respectively.
Beneficial effect：
The present invention has the outer circulation type ore pulp preprocessor of self-priming medicine function, can be in the presence of ejector by flotation medicine
Agent is fully dispersed, and then improves the functioning efficiency of medicament.For example, the foaming agent that self-priming enters ore pulp preprocessor can be in jet
Under dissection, disperse is conducive to the raising of bubble and foam stability in further flotation link into tiny oil droplets；Example again
Such as, self-priming enter the collecting agent of ore pulp preprocessor also can disperse is into tiny oil droplets under the dissection of jet, and in jet
High turbulence environment in reinforcing oil droplet and fly ash grain between collision probability, improve collecting agent action effect.
Sedimentation basin bottom sets slush pump, and particulate shale mineral are returned to flotation operation of sizing mixing, can further be sent out
Stabilization of the fine grained to flotation froth is waved, flotation froth stability is improved, and then improve the removal effect of charcoal.
The setting of flotation column bottom-flow automatic discharge system, improves the automaticity of flotation froth layer thickness control, this
Also it is convenient to be provided for the technological operation for the purpose of the setting of thick froth bed, can further improve the removal effect of charcoal.
Brief description of the drawings
Fig. 1 is process flow diagram of the invention；
Fig. 2 is the structural representation of the ore pulp preprocessor of the present invention；
Fig. 3 is the structural representation of flotation column bottom-flow automatic discharge system of the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Charcoal technique is taken off for a kind of high concrete carbon fly ash flotation with foam stabilizing feature as shown in Figure 1, by high concrete carbon fly ash former ash
Slurry feeds ore pulp preprocessor, while flotation collector and foaming agent are added into ore pulp preprocessor in the lump, modulation is obtained
The mortar of mass percentage concentration 15%~20%, then by the slurry delivery modulated to flotation column, when in flotation column
Froth bed thickness reaches 800mm~1500mm, then by flotation column obtain the smart charcoal product of foam and underflow low charcoal ash respectively according to
It is secondary to be delivered to corresponding thickener and filter dehydration, obtain smart charcoal product and low charcoal ash product.The sedimentation basin bottom is set
Have slush pump, by pipeline communication between the slush pump and the ore pulp preprocessor, the overflow water of the thickener and
The filtrate gravity flow of filter enters after the particulate shale mineral precipitation in overflow water and filtrate in sedimentation basin, the sedimentation basin
In the presence of slush pump, it is back to ore pulp preprocessor through pipeline and re-starts flotation, returns to the particulate for carrying out flotation
The percentage by weight that shale mineral account for former ash slurry is about 1%~2%, concentration of hydraulic mixture 35%~40%, wherein grain fineness -45
μm account for 90%~94%；Overflow water after sedimentation and filtrate in the sedimentation basin are pressurizeed for filter by high-pressure pump
The cleaning of filter cloth.
The ore pulp preprocessor being related in Fig. 2, above-mentioned technique includes ore pulp staving 9 and ore pulp external circulating system, the ore deposit
The top of slurry bucket body 9 is provided with feed pipe 1 and discharge nozzle 5；Feed is fixedly installed from top to bottom along the center line of ore pulp staving 9
Baffle-box 2 and feed downcomer 4, the feed baffle-box 2 are connected with feed downcomer about 4, and the feed pipe 1 is slow with feed
Rush the connection of the level of case 2；The ore pulp external circulating system includes circulation Pulp pump 10, annular ore pulp distributing trough 6, jet mixer 7
With turbulent mixture pipe 8, the jet mixer 7 uses venturi tube structure, and the annular ore pulp distributing trough 6 is set in ore pulp bucket
On the outer wall of body 9, the bottom of the ore pulp staving 9 is connected by circulating discharge nozzle 11 with circulation Pulp pump 10, the circulation slag
Stock pump 10 is connected by pipeline with annular ore pulp distributing trough 6；3~8 jet mixings of the lower section of annular ore pulp distributing trough 6 connection
Medicament entrance and valve port are provided with device 7, each jet mixer 7, each bottom of jet mixer 7 of correspondence is connected with disorderly
Mixing tube 8 is flowed, the turbulent mixture pipe 8 is tangentially connected with ore pulp staving 9, the inner wall surface of ore pulp staving 9 sets 4~6
Baffle plate 13.
The bottom of the ore pulp staving 9 is the high swash plate structure in middle low periphery, and the circulation discharge nozzle 11 is arranged on ore deposit
The bottom extreme lower position of slurry bucket body 9.The side wall of the circulation discharge nozzle 11 is provided with accident ore drawing pipe 12, staving during for shutting down
The discharge of internal ore pulp.
Wherein, A- is fed in accompanying drawing, B- discharges, C- floating agents, D- circulation ore pulps.
The operation principle of ore pulp preprocessor：High concrete carbon fly ash former ash slurry feeds feed baffle-box 2 through feed pipe 1,
And under the drainage of feed downcomer 4, high concrete carbon fly ash former ash slurry is directly drained to the bottom of ore pulp staving 9；In slag
Under the swabbing action of stock pump 10, circulation high concrete carbon fly ash former ash slurry enters external circulating system through circulating discharge nozzle 11, pressurizes it
High concrete carbon fly ash former ash slurry afterwards is delivered to annular ore pulp distributing trough 6 by the road, is acted in 0.15~0.20Mpa high pressure
Under, the ore pulp inside annular ore pulp distributing trough 6 comes downwards to jet mixer 7, produces high-pressure jet, and in jet mixer 7
Negative pressure is formed in the vacuum chamber in portion, so that floating agent is entered into ore pulp by medicament entrance self-priming, is formed in jet mixer 7
Volume inhale, under shearing and action of turbulent flow, medicament is scattered and its collision with particle and adsorption effect are strengthened；Through jet mixing
Ore pulp after the immixture of device 7 is tangentially sent back to inside ore pulp staving 9 through turbulent mixture pipe 8, so that inside ore pulp staving 9
Rotation flow of slurry is formed, rotation flow of slurry can further strengthen the suspension effect of ore pulp and float under the barrier effect of baffle plate 13
Select medicament peptizaiton；In operation, the circular flow of ore pulp is about 1~3 times of ore pulp feeding coal, the ore pulp after jet action
Tangential to enter behind the inside of ore pulp staving 9, swash plate structure of the part along staving is back to circulation discharge nozzle 11, reenters outer follow
Loop system carries out jet mixing effect；Another part ore pulp goes upward to discharging opening 5, completes ore pulp pre-treatment job, and discharge is made
For floatation feed.
The underflow automatic discharge system for the flotation column being related in Fig. 3, above-mentioned technique, the underflow automatic discharge system, institute
Stating underflow automatic discharge system includes pressure sensor 3-1, electric hose valve 4-1, underflow discharge pipe 2-1 and PID control instrument
5-1, the pressure sensor 3-1 are arranged on flotation column 1-1 barrel, apart from 2000mm at the top of flotation column 1-1, the flotation
Post 1-1 bottom is connected with underflow discharge pipe 2-1, the electric hose valve 4-1 and is arranged on underflow discharge pipe 2-1 exhaust end,
The PID control instrument 5-1 is connected with pressure sensor 3-1 and electric hose valve 4-1 data transfers respectively.Pressure sensor 3-
The pressure signal for representing froth bed thickness is converted to electric signal by 1, is sent to PID control instrument 5-1, and then pass through PID control
Instrument 5-1 control electric hose valves 4-1 aperture, realizes that the precision of froth bed thickness is automatically controlled.
In above-mentioned technical proposal, flotation column, thickener and filter use prior art equipment.For example：Flotation column can
Using the Cyclonic-static fine-bubble flotation column of China Mining University, thickener can be using Wuxi south of the River power station deashing device factory
GNS-D type high-efficiency concentrators, filter can use the serial adhesive tape type vacuum filters of the DU of Huzhou nuclear star Machinery Manufacturing Co., Ltd.
Machine.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique, it is characterised in that：By high concrete carbon fly ash former ash material
Slurry feeds ore pulp preprocessor, while flotation collector and foaming agent are added into ore pulp preprocessor in the lump, modulation obtains matter
The mortar of percentage concentration 15%~20% is measured, then by the slurry delivery modulated to flotation column, flotation column is obtained
Concentrated machine and the filter dehydration successively respectively of foam essence charcoal product and underflow low charcoal ash, obtains smart charcoal product and low charcoal ash production
Product；
Overflow water and filter that the filtrate gravity flow of the overflow water and filter of the thickener enters in sedimentation basin, the sedimentation basin
It is delivered to after particulate shale mineral precipitation in liquid in ore pulp preprocessor and re-starts flotation, the warp in the sedimentation basin sinks
The cleaning that overflow water and filtrate after drop are pressurizeed for filter cloth by high-pressure pump；
The ore pulp preprocessor includes ore pulp staving (9) and ore pulp external circulating system, and the top of the ore pulp staving (9) is set
There are feed pipe (1) and discharge nozzle (5)；Along the center line of ore pulp staving (9) be fixedly installed from top to bottom feed baffle-box (2) and
Downcomer (4) is fed, the feed baffle-box (2) connects up and down with feed downcomer (4), and the feed pipe (1) is slow with feed
Rush the connection of case (2) level；
The ore pulp external circulating system includes circulation Pulp pump (10), annular ore pulp distributing trough (6), jet mixer (7) and disorderly
Mixing tube (8) is flowed, the annular ore pulp distributing trough (6) is set on the outer wall of ore pulp staving (9), the ore pulp staving (9)
Bottom is connected by circulating discharge nozzle (11) with circulation Pulp pump (10), and the circulation Pulp pump (10) passes through pipeline and annular ore deposit
Starch distributing trough (6) connection；Some jet mixers (7) of connection below the annular ore pulp distributing trough (6), each jet is mixed
Medicament entrance and valve are provided with clutch (7), each jet mixer (7) bottom of correspondence is connected with turbulent mixture pipe (8), institute
State turbulent mixture pipe (8) tangentially to connect with ore pulp staving (9), ore pulp staving (9) inner wall surface sets some baffle plates (13).
2. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：When
Froth bed thickness in flotation column reaches 800mm~1500mm, then flotation column is obtained into the smart charcoal product of foam and underflow is low
Charcoal ash are delivered to corresponding thickener and filter dehydration successively respectively.
3. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：Institute
State sedimentation basin bottom and be provided with slush pump, it is described heavy by pipeline communication between the slush pump and the ore pulp preprocessor
The particulate shale mineral in shallow lake bottom of pond portion are back to ore pulp preprocessor in the presence of slush pump through pipeline.
4. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：Institute
It is the high swash plate structure in middle low periphery to state the bottom of ore pulp staving (9), and the circulation discharge nozzle (11) is arranged on ore pulp staving
(9) bottom extreme lower position.
5. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 4, it is characterised in that：Institute
The side wall for stating circulation discharge nozzle (11) is provided with accident ore drawing pipe (12).
6. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：Institute
State jet mixer (7) and use venturi tube structure.
7. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：It is high
Powdered carbon coal ash former ash slurry feeds feed baffle-box (2) through feed pipe (1), and under the drainage of feed downcomer (4),
High concrete carbon fly ash former ash slurry is directly drained to ore pulp staving (9) bottom；Under the swabbing action of Pulp pump (10), circulation is high
Powdered carbon coal ash former ash slurry enters external circulating system through circulating discharge nozzle (11), the high concrete carbon fly ash former ash slurry warp after pressurization
Pipeline transport is to annular ore pulp distributing trough (6), and under 0.15~0.20Mpa high pressure effect, annular ore pulp distributing trough (6) is internal
Ore pulp come downwards to jet mixer (7), produce high-pressure jet, and form negative in the internal vacuum chamber of jet mixer (7)
Pressure, so that floating agent is entered into ore pulp by medicament entrance self-priming；Ore pulp warp after jet mixer (7) immixture
Turbulent mixture pipe (8) tangentially sends ore pulp staving (9) inside back to, so as to be internally formed rotation flow of slurry in ore pulp staving (9), revolves
Turn flow of slurry under the barrier effect of baffle plate (13), can further strengthen the suspension effect and floating agent peptizaiton of ore pulp；
In operation, the circular flow of ore pulp is 1~3 times of ore pulp feeding coal, and the ore pulp after jet action tangentially enters ore pulp staving
(9) behind inside, a part reenters external circulating system and carries out jet mixing effect along circulation discharge nozzle (11) is back to；Separately
Outer a part of ore pulp goes upward to discharging opening (5), completes ore pulp pre-treatment job, and discharge is used as floatation feed.
8. a kind of high concrete carbon fly ash flotation with foam stabilizing feature takes off charcoal technique according to claim 1, it is characterised in that：Institute
Stating flotation column includes underflow automatic discharge system, and the underflow automatic discharge system includes pressure sensor (3-1), electronic sebific duct
Valve (4-1), underflow discharge pipe (2-1) and PID control instrument (5-1), the pressure sensor (3-1) are arranged on flotation column (1-
1) on barrel, apart from 2000mm at the top of flotation column (1-1), the bottom of the flotation column (1-1) is connected with underflow discharge pipe (2-
1), the electric hose valve (4-1) is arranged on the exhaust end of underflow discharge pipe (2-1), and the PID control instrument (5-1) is respectively
It is connected with pressure sensor (3-1) and electric hose valve (4-1) data transfer.
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| CN201610097054.3A CN105498981B (en) | 2016-02-23 | 2016-02-23 | High-carbon fly ash flotation decarbonization process with foam stabilization characteristic |
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| CN201610097054.3A CN105498981B (en) | 2016-02-23 | 2016-02-23 | High-carbon fly ash flotation decarbonization process with foam stabilization characteristic |
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| CN110237941B (en) * | 2019-06-29 | 2024-05-31 | 浙江艾领创矿业科技有限公司 | High-pressure jet flotation device and processing method thereof |
| CN112973951B (en) * | 2019-12-13 | 2024-05-17 | 南京宝地梅山产城发展有限公司 | Technological method for improving precision of desulfurized iron rough concentrate |
| CN114034596A (en) * | 2021-12-16 | 2022-02-11 | 安徽华塑股份有限公司 | Boiler combustion efficiency testing device and method |
| CN115138483A (en) * | 2022-08-16 | 2022-10-04 | 中国矿业大学 | Coal gasification slag flotation decarburization method and system based on surface microbubbles |
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| DK146216C (en) * | 1981-02-16 | 1984-02-20 | Oeresund Kryolit | PROCEDURE FOR SEPARATING COAL PARTICLES FROM A FLOT FLASH BY FLOTATION |
| CN1133205A (en) * | 1995-11-01 | 1996-10-16 | 陈启松 | Eddy flotation machine |
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