CN105498981A - High-carbon coal ash flotation and carbon removal technology with foam stabilizing characteristic - Google Patents
High-carbon coal ash flotation and carbon removal technology with foam stabilizing characteristic Download PDFInfo
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- CN105498981A CN105498981A CN201610097054.3A CN201610097054A CN105498981A CN 105498981 A CN105498981 A CN 105498981A CN 201610097054 A CN201610097054 A CN 201610097054A CN 105498981 A CN105498981 A CN 105498981A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/145—Feed mechanisms for reagents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1456—Feed mechanisms for the slurry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1468—Discharge mechanisms for the sediments
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- 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
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
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Abstract
The invention discloses a high-carbon coal ash flotation and carbon removal technology with the foam stabilizing characteristic. According to the technology, high-carbon coal ash slurry is fed into a slurry pretreater, meanwhile, a flotation collecting agent and a foaming agent are added to the slurry pretreater, the mixture is blended to obtain mortar with certain mass percentage concentration, then the blended mortar is conveyed to a flotation column to be sorted, flotation column sorting is carried out to obtain foam refined coal and underflow low-carbon ash, and the foam refined coal and the underflow low-carbon ash are dehydrated through a thickener and a filtering machine to obtain refined coal and low-carbon ash; overflow water of the thickener and filter liquor of the filtering machine flow into a settling pond automatically, fine-grain muddy minerals in the overflow water and the filter liquor in the settling pond are conveyed into the slurry pretreater after depositing to be floated again, and the overflow water and the filter liquor after depositing in the settling pond are pressurized and used for washing filter cloth of the filtering machine. By means of medicament forced dispersion of the slurry pretreater, arrangement of a thick foam layer of the flotation pile, and return of fine-grain slurry, the problem of coal ash flotation and coal removal foam stability is poor is solved, and the coal removal rate is increased.
Description
Technical field
The present invention relates to a kind of floatation process, the high concrete carbon fly ash flotation being particularly useful for foam stability poor takes off charcoal.
Background technology
Flyash is that Coal Energy Source utilizes the bulk solid waste of discharging in process, at present, the flyash volume of cargo in storage of China is about 12,000,000,000 tons, the high concrete carbon fly ash that wherein loss on ignition is not up to standard occupies suitable proportion, the particularly wet-discharged coal ash stored up of some old generating sets or history, the problem that ubiquity carbon content exceeds standard, has a strong impact on quality index when flyash uses as building material product.Therefore, flotation is carried out to high concrete carbon fly ash and take off the effective means that charcoal becomes raising total utilization of PCA rate.
The flotation of flyash takes off the difficult problem that charcoal system exists foam stability difference, and this is mainly determined by the mineral composition character of flyash.Generally speaking, as the topmost diagenetic mineral of nature, clay mineral still exists as main gangue mineral in all kinds of natural mineral floating system, due to the argillization effect that it is stronger, make the thin mud in flotation system also be often based on clay mineral, and the existence of these mineral enhance the foam stability of flotation system to a certain extent.And based on amorphous vitreum in the mineral facies composition of flyash, a small amount of crystalline mineral is also based on the lower quartz, mullite etc. of activity, in addition, the particle's behavior of coal combustion process also causes amorphous phase material in the fine fraction enrichment of flyash, and these mineral composition character cause the foam stability of flyash flotation system poor.Therefore, how to become from the foam stability of technological angle raising flyash flotation the key improving fly ash charcoal-removing efficiency.
Chinese patent 200810031473.2 discloses a kind of technique for decarbonizing fly ash with high ignition loss.This technique comprises automatic medicament feeding machine, and to add dispersant and composite drug, ore pulp preprocessor mix and blend, flotation pillar special for fly ash sorting, carbon granule and tail grey respectively through steps such as thickener and filter dehydrations.
Chinese patent 201110185234.4 discloses a kind of Self-air supplying coal ash flotation process.Comprise the steps: to add flotation agent in powdered coal ash, form mixed material; Mixed material falls from the first floatation equipment top; Utilize the venturi tube structure on the first floatation equipment circulating line, suck extraneous gas; The particle that floatability is good moves upward under the effect of bubble; Collect and to move upward and by the particle of the first floatation equipment flotation plate.
Chinese patent CN200810031474.7 discloses a kind of flotation pillar special for fly ash.Flotation column cylindrical shell top is provided with pulp distributer, multistage bubbling plate is established in cylindrical shell, multiple spot swirl-flow devices and multiple spot tail ash spout hole are established in cylindrical shell bottom, pulp distributer peripheral devices ore pulp distributing pipe, around device circulating line, circulating line upper end and ore pulp distributing pipe connect, lower end and swirl-flow devices connect, ore pulp distributing pipe interface is connected circulating pump two ends respectively with feed inlet and outlet, also be provided with the high charcoal balanced overflow plate of ash and high charcoal ash overflow collection mouth on flotation column top, tail ash spout hole is connected and installed with tail ash automatic control stuff box by pipeline.
Chinese patent CN201210258144.8 discloses a kind of cell type multi-stage flotation separation equipment for coal ash.Comprise the channel-shaped body of strip, this channel-shaped body comprises stem and afterbody, and wherein the top of stem is provided with feed(raw material)inlet, and the top of afterbody is provided with flotation outlet; This channel-shaped body is separated at least two flotation cells by least one board plug device; The bottom of each flotation cells is equipped with the outlet of tail ash; This equipment also comprises the aerator producing bubble, and aerator comprises the bubble diffusing apparatus be installed in each flotation cells; Each board plug device includes can up and down adjustment weir flow plate, by the size regulating the degree of depth of weir flow plate to regulate board plug device overflow discharge orifice.
Chinese patent CN200810143173.3 discloses the new technology that a kind of flyash produces active carbon.Wherein flyash flotation link comprises the steps: that former ash enters ore pulp preprocessor after the process of van-type tube blower, dispersant and composite drug add and join ore pulp preprocessor through automatically adding medicine, then first order flotation column and second level flotation column is entered, go out carbon contg particle from second level flotation column, dewater through thickener, filter and dryer.
Above-mentioned technical method does not improve the de-charcoal efficiency of flyash from the angle improving flotation froth stability, and the foam stabilization sex chromosome mosaicism caused by thing phase character of fly ash grain is the key factor causing fly ash charcoal-removing effect poor.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of high concrete carbon fly ash flotation with steady bubble feature and take off charcoal technique, solve by the medicament Forced Dispersion of ore pulp preprocessor, the thick froth bed setting of flotation column and returning of particulate mud the difficult problem that flyash flotation takes off carbon foams poor stability, and then improve the removal efficiency of charcoal in flyash.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique, former for high concrete carbon fly ash grey slip is fed ore pulp preprocessor, flotation collector and foaming agent are joined ore pulp preprocessor in the lump simultaneously, modulation obtains the mortar of mass percentage concentration 15% ~ 20%, then by the slurry delivery that modulates to flotation column, flotation column obtains foam essence charcoal product and the low charcoal ash of underflow dewaters through thickener and filter respectively successively, obtains smart charcoal product and low charcoal ash products; The overflow water of described thickener and the filtrate gravity flow of filter enter sedimentation basin, be delivered in ore pulp preprocessor after overflow water in described sedimentation basin and the particulate shale mineral precipitation in filtrate and re-start flotation, the overflow water after sedimentation in described sedimentation basin and filtrate are used for the cleaning of filter cloth by high-pressure pump pressurization.
Further, when the froth bed thickness in flotation column reaches 800mm ~ 1500mm, then flotation column is obtained foam essence charcoal product and grey thickener and the filter dehydration being delivered to correspondence respectively successively of the low charcoal of underflow.
Further, be provided with slush pump bottom described sedimentation basin, by pipeline communication between described slush pump and described ore pulp preprocessor, the particulate shale mineral bottom described sedimentation basin, under the effect of slush pump, are back to ore pulp preprocessor through pipeline.
Further, described ore pulp preprocessor comprises ore pulp staving and ore pulp external circulating system, and the top of described ore pulp staving is provided with feed pipe and discharge nozzle; Center line along ore pulp staving is fixedly installed feed baffle-box and feed downcomer from top to bottom, and described feed baffle-box is communicated with up and down with feed downcomer, and described feed pipe is communicated with feed baffle-box level; Described ore pulp external circulating system comprises circulation Pulp pump, annular ore pulp distributing trough, jet mixer and turbulent mixture pipe, described annular ore pulp distributing trough is set on the outer wall of ore pulp staving, the bottom of described ore pulp staving is connected with circulation Pulp pump by circulation discharge nozzle, and described circulation Pulp pump is connected with annular ore pulp distributing trough by pipeline; Some jet mixers are connected below described annular ore pulp distributing trough, each described jet mixer is provided with medicament entrance and valve, corresponding each jet mixer bottom is connected with turbulent mixture pipe, described turbulent mixture pipe is tangentially communicated with ore pulp staving, and described ore pulp inner wall of barrel surface arranges some baffle plates.
Further, the bottom of described ore pulp staving is the high swash plate structure in middle low periphery, and described circulation discharge nozzle is arranged on the bottom extreme lower position of ore pulp staving.The sidewall of described circulation discharge nozzle is provided with accident ore drawing pipe.
Further, described jet mixer adopts venturi tube structure.
The operation principle of ore pulp preprocessor: the former grey slip of high concrete carbon fly ash feeds feed baffle-box through feed pipe, and under the drainage of feed downcomer, former for high concrete carbon fly ash grey slip is directly drained to bottom ore pulp staving; Under the swabbing action of Pulp pump, the former grey slip of circulation high concrete carbon fly ash enters external circulating system through circulation discharge nozzle, the former grey slip of high concrete carbon fly ash after pressurization is delivered to annular ore pulp distributing trough by the road, under the High Pressure of 0.15 ~ 0.20Mpa, the ore pulp of annular ore pulp distributing trough inside comes downwards to jet mixer, produce high-pressure spray, and form negative pressure in the vacuum chamber of jet mixer inside, thus floating agent is entered ore pulp by medicament entrance self-priming; Ore pulp after jet mixer immixture tangentially sends ore pulp staving inside back to through turbulent mixture pipe, thus form rotation flow of slurry in ore pulp staving inside, rotate flow of slurry under the barrier effect of baffle plate, suspension effect and the floating agent peptizaiton of ore pulp can be strengthened further; In operation, the circular flow of ore pulp is about 1 ~ 3 times of ore pulp feeding coal, and after the ore pulp after jet action tangentially enters ore pulp staving inside, a part, along being back to circulation discharge nozzle, reentering external circulating system and carries out jet mixing effect; A part of ore pulp goes upward to discharging opening in addition, completes ore pulp pre-treatment job, discharges as floatation feed.
Further, described flotation column comprises underflow automatic discharge system, described underflow automatic discharge system comprises pressure sensor, electric hose valve, underflow discharge pipe and PID control instrument, described pressure sensor is arranged on the barrel of flotation column, distance flotation column top 2000mm, the bottom of described flotation column is connected with underflow discharge pipe, and described electric hose valve is arranged on the exhaust end of underflow discharge pipe, and described PID control instrument transmits with pressure sensor and electric hose valve data respectively and is connected.
Beneficial effect:
The present invention has the outer circulation type ore pulp preprocessor of self-priming medicine function, fully can be disperseed by floating agent under the effect of ejector, and then improves the functioning efficiency of medicament.Such as, self-priming enters the foaming agent of ore pulp preprocessor can under the dissection of jet, and disperse becomes tiny oil droplets, is conducive to the raising of bubble and foam stability in further flotation link; Again such as, the collecting agent that self-priming enters ore pulp preprocessor also disperse can become tiny oil droplets under the dissection of jet, and strengthens the collision probability between oil droplet and fly ash grain in the strong turbulent environment of jet, improves collecting agent action effect.
Bottom sedimentation basin, slush pump is set, particulate shale mineral are returned to flotation operation of sizing mixing, the stabilization of fine grained to flotation froth can be played further, improve flotation froth stability, and then improve the removal effect of charcoal.
The setting of flotation column bottom-flow automatic discharge system, improves the automaticity that flotation froth layer thickness controls, and this also for the technological operation being set to object with thick froth bed provides convenient, can further improve the removal effect of charcoal.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is the structural representation of 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.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 a kind of high concrete carbon fly ash flotation with steady bubble feature and take off charcoal technique, former for high concrete carbon fly ash grey slip is fed ore pulp preprocessor, flotation collector and foaming agent are joined ore pulp preprocessor in the lump simultaneously, modulation obtains the mortar of mass percentage concentration 15% ~ 20%, then by the slurry delivery that modulates to flotation column, when the froth bed thickness in flotation column reaches 800mm ~ 1500mm, again flotation column is obtained foam essence charcoal product and grey thickener and the filter dehydration being delivered to correspondence respectively successively of the low charcoal of underflow, obtain smart charcoal product and low charcoal ash products.Slush pump is provided with bottom described sedimentation basin, pipeline communication is passed through between described slush pump and described ore pulp preprocessor, the overflow water of described thickener and the filtrate gravity flow of filter enter sedimentation basin, after overflow water in described sedimentation basin and the particulate shale mineral precipitation in filtrate under the effect of slush pump, be back to ore pulp preprocessor through pipeline and re-start flotation, return to the percentage by weight that the particulate shale mineral carrying out flotation account for former grey slip and be about 1% ~ 2%, concentration of hydraulic mixture 35% ~ 40%, wherein grain fineness-45 μm accounts for 90% ~ 94%; The overflow water after sedimentation in described sedimentation basin and filtrate are used for the cleaning of filter cloth by high-pressure pump pressurization.
Fig. 2, the ore pulp preprocessor related in above-mentioned technique comprises ore pulp staving 9 and ore pulp external circulating system, and the top of described ore pulp staving 9 is provided with feed pipe 1 and discharge nozzle 5; Center line along ore pulp staving 9 is fixedly installed feed baffle-box 2 and feed downcomer 4 from top to bottom, and described feed baffle-box 2 is communicated with feed downcomer about 4, and described feed pipe 1 is communicated with feed baffle-box 2 level; Described ore pulp external circulating system comprises circulation Pulp pump 10, annular ore pulp distributing trough 6, jet mixer 7 and turbulent mixture pipe 8, described jet mixer 7 adopts venturi tube structure, described annular ore pulp distributing trough 6 is set on the outer wall of ore pulp staving 9, the bottom of described ore pulp staving 9 is connected with circulation Pulp pump 10 by circulation discharge nozzle 11, and described circulation Pulp pump 10 is connected with annular ore pulp distributing trough 6 by pipeline; 3 ~ 8 jet mixers 7 are connected below described annular ore pulp distributing trough 6, each described jet mixer 7 is provided with medicament entrance and valve port, corresponding each jet mixer 7 bottom is connected with turbulent mixture pipe 8, described turbulent mixture pipe 8 is tangentially communicated with ore pulp staving 9, and described ore pulp staving 9 inner wall surface arranges 4 ~ 6 baffle plates 13.
The bottom of described ore pulp staving 9 is the high swash plate structure in middle low periphery, and described circulation discharge nozzle 11 is arranged on the bottom extreme lower position of ore pulp staving 9.The sidewall of described circulation discharge nozzle 11 is provided with accident ore drawing pipe 12, the discharge of staving inner ore pulp during for shutting down.
Wherein, A-feed in accompanying drawing, B-discharge, C-floating agent, D-circulation ore pulp.
The operation principle of ore pulp preprocessor: the former grey slip of high concrete carbon fly ash feeds feed baffle-box 2 through feed pipe 1, and under the drainage of feed downcomer 4, former for high concrete carbon fly ash grey slip is directly drained to bottom ore pulp staving 9, under the swabbing action of Pulp pump 10, the former grey slip of circulation high concrete carbon fly ash enters external circulating system through circulation discharge nozzle 11, the former grey slip of high concrete carbon fly ash after pressurization is delivered to annular ore pulp distributing trough 6 by the road, under the High Pressure of 0.15 ~ 0.20Mpa, the ore pulp of annular ore pulp distributing trough 6 inside comes downwards to jet mixer 7, produce high-pressure spray, and negative pressure is formed in the vacuum chamber of jet mixer 7 inside, thus floating agent is entered ore pulp by medicament entrance self-priming, what formed at jet mixer 7 entrainments, shear and action of turbulent flow under, medicament dispersion and being strengthened with the collision of particle and adsorption effect, ore pulp after jet mixer 7 immixture tangentially sends ore pulp staving 9 inside back to through turbulent mixture pipe 8, thus form rotation flow of slurry in ore pulp staving 9 inside, rotate flow of slurry under the barrier effect of baffle plate 13, suspension effect and the floating agent peptizaiton of ore pulp can be strengthened further, in operation, the circular flow of ore pulp is about 1 ~ 3 times of ore pulp feeding coal, after ore pulp after jet action tangentially enters ore pulp staving 9 inside, a part is back to circulation discharge nozzle 11 along the swash plate structure of staving, reenters external circulating system and carries out jet mixing effect, a part of ore pulp goes upward to discharging opening 5 in addition, completes ore pulp pre-treatment job, discharges as floatation feed.
Fig. 3, the underflow automatic discharge system of the flotation column related in above-mentioned technique, described underflow automatic discharge system, described underflow automatic discharge system comprises pressure sensor 3, electric hose valve 4, underflow discharge pipe 2 and PID control instrument 5, described pressure sensor 3 is arranged on the barrel of flotation column 1, distance flotation column 1 top 2000mm, the bottom of described flotation column 1 is connected with underflow discharge pipe 2, described electric hose valve 4 is arranged on the exhaust end of underflow discharge pipe 2, and described PID control instrument 5 transmits with pressure sensor 3 and electric hose valve 4 data respectively and is connected.The pressure signal representing froth bed thickness is converted to the signal of telecommunication by pressure sensor 3, is sent to PID control instrument 5, and then controls the aperture of electric hose valve 4 by PID control instrument 5, and the precision realizing froth bed thickness controls automatically.
In technique scheme, flotation column, thickener and filter all adopt prior art equipment.Such as: flotation column can adopt the Cyclonic-static fine-bubble flotation column of China Mining University, thickener can adopt the GNS-D type high-efficiency concentrator of power station, the south of the River, Wuxi deashing device factory, and filter can adopt the DU series adhesive tape type vacuum filter of Huzhou nuclear star Machinery Manufacturing Co., Ltd..
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique, it is characterized in that: former for high concrete carbon fly ash grey slip is fed ore pulp preprocessor, flotation collector and foaming agent are joined ore pulp preprocessor in the lump simultaneously, modulation obtains the mortar of mass percentage concentration 15% ~ 20%, then by the slurry delivery that modulates to flotation column, flotation column obtains foam essence charcoal product and the low charcoal ash of underflow dewaters through thickener and filter respectively successively, obtains smart charcoal product and low charcoal ash products;
The overflow water of described thickener and the filtrate gravity flow of filter enter sedimentation basin, be delivered in ore pulp preprocessor after overflow water in described sedimentation basin and the particulate shale mineral precipitation in filtrate and re-start flotation, the overflow water after sedimentation in described sedimentation basin and filtrate are used for the cleaning of filter cloth by high-pressure pump pressurization.
2. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 1, it is characterized in that: when the froth bed thickness in flotation column reaches 800mm ~ 1500mm, then flotation column is obtained foam essence charcoal product and grey thickener and the filter dehydration being delivered to correspondence respectively successively of the low charcoal of underflow.
3. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 1, it is characterized in that: bottom described sedimentation basin, be provided with slush pump, pipeline communication is passed through between described slush pump and described ore pulp preprocessor, particulate shale mineral bottom described sedimentation basin, under the effect of slush pump, are back to ore pulp preprocessor through pipeline.
4. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 1, it is characterized in that: described ore pulp preprocessor comprises ore pulp staving (9) and ore pulp external circulating system, the top of described ore pulp staving (9) is provided with feed pipe (1) and discharge nozzle (5); Center line along ore pulp staving (9) is fixedly installed feed baffle-box (2) and feed downcomer (4) from top to bottom, described feed baffle-box (2) is communicated with up and down with feed downcomer (4), and described feed pipe (1) is communicated with feed baffle-box (2) level;
Described ore pulp external circulating system comprises circulation Pulp pump (10), annular ore pulp distributing trough (6), jet mixer (7) and turbulent mixture pipe (8), described annular ore pulp distributing trough (6) is set on the outer wall of ore pulp staving (9), the bottom of described ore pulp staving (9) is connected with circulation Pulp pump (10) by circulation discharge nozzle (11), and described circulation Pulp pump (10) is connected with annular ore pulp distributing trough (6) by pipeline; Described annular ore pulp distributing trough (6) below connects some jet mixers (7), each described jet mixer (7) is provided with medicament entrance and valve, corresponding each jet mixer (7) bottom is connected with turbulent mixture pipe (8), described turbulent mixture pipe (8) is tangentially communicated with ore pulp staving (9), and described ore pulp staving (9) inner wall surface arranges some baffle plates (13).
5. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 4, it is characterized in that: the bottom of described ore pulp staving (9) is the high swash plate structure in middle low periphery, and described circulation discharge nozzle (11) is arranged on the bottom extreme lower position of ore pulp staving (9).
6. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 5, it is characterized in that: the sidewall of described circulation discharge nozzle (11) is provided with accident ore drawing pipe (12).
7. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 4, it is characterized in that: described jet mixer (7) adopts venturi tube structure.
8. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 4, it is characterized in that: the former grey slip of high concrete carbon fly ash feeds feed baffle-box (2) through feed pipe (1), and under the drainage of feed downcomer (4), former for high concrete carbon fly ash grey slip is directly drained to ore pulp staving (9) bottom; Under the swabbing action of Pulp pump (10), the former grey slip of circulation high concrete carbon fly ash enters external circulating system through circulation discharge nozzle (11), the former grey slip of high concrete carbon fly ash after pressurization is delivered to annular ore pulp distributing trough (6) by the road, under the High Pressure of 0.15 ~ 0.20Mpa, the ore pulp of annular ore pulp distributing trough (6) inside comes downwards to jet mixer (7), produce high-pressure spray, and form negative pressure in the vacuum chamber that jet mixer (7) is inner, thus floating agent is entered ore pulp by medicament entrance self-priming; Ore pulp after jet mixer (7) immixture tangentially sends ore pulp staving (9) inside back to through turbulent mixture pipe (8), thus form rotation flow of slurry in ore pulp staving (9) inside, rotate flow of slurry under the barrier effect of baffle plate (13), suspension effect and the floating agent peptizaiton of ore pulp can be strengthened further; In operation, the circular flow of ore pulp is about 1 ~ 3 times of ore pulp feeding coal, after ore pulp after jet action tangentially enters ore pulp staving (9) inside, a part, along being back to circulation discharge nozzle (11), reentering external circulating system and carries out jet mixing effect; A part of ore pulp goes upward to discharging opening (5) in addition, completes ore pulp pre-treatment job, discharges as floatation feed.
9. a kind of high concrete carbon fly ash flotation with steady bubble feature takes off charcoal technique according to claim 1, it is characterized in that: described flotation column comprises underflow automatic discharge system, described underflow automatic discharge system comprises pressure sensor (3), electric hose valve (4), underflow discharge pipe (2) and PID control instrument (5), described pressure sensor (3) is arranged on the barrel of flotation column (1), distance flotation column (1) top 2000mm, the bottom of described flotation column (1) is connected with underflow discharge pipe (2), described electric hose valve (4) is arranged on the exhaust end of underflow discharge pipe (2), described PID control instrument (5) is transmitted with pressure sensor (3) and electric hose valve (4) data respectively and is connected.
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| CN110237941A (en) * | 2019-06-29 | 2019-09-17 | 浙江精锐机械科技股份有限公司 | A kind of high-pressure jet flotation unit and its processing method |
| CN112973951A (en) * | 2019-12-13 | 2021-06-18 | 南京宝地梅山产城发展有限公司 | Process 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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| 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 |
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