CN105521738B - A kind of integrated form difficulty selects duff size mixing equipment - Google Patents

Abstract

The present invention relates to coal slurry preprocessing technical field, and in particular to a kind of integrated form difficulty selects duff size mixing equipment.This equipment includes blending bin；Box cavity plumbing arrangement drive shaft is mixed, mixing box cavity is from top to bottom sequentially arranged electric field active layer, ultrasonic oscillation layer and action of forced stirring layer along drive shaft length direction；This equipment also includes pressure air-dissolving case, the blast pipe for being passed through high-pressure blast is arranged in the casing of pressure air-dissolving case, casing be used for connect blending bin discharging opening arrival end arrange for realize the arrival end open and close pan feeding dividing plate, pan feeding dividing plate fasten with extension spring and be resisted against arrival end sentence close the arrival end；The port of export connection flotation device of casing, arranges that, for realizing the discharge partition plate opened and closed at this, discharge partition plate is tensed with compression spring and closes the port of export at the port of export.The present invention can play good quenched effect to entering float coal mud, be especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, its operating efficiency is high and preprocessing process is quick and convenient.

Description

A kind of integrated form difficulty selects duff size mixing equipment

Technical field

The present invention relates to coal slurry preprocessing technical field, and in particular to selects one kind that fine slime is sized mixing and modified for high grey difficulty Integrated form difficulty selects duff size mixing equipment.

Background technology

Because the floatability of China's coal slime is generally poor, therefore coal slurry pretreatment is essential in floatation coal separation technique Link, is the prerequisite that flotation device obtains good technical-economic index.The necessity of coal slurry pretreatment mainly has following four Point：1), that floating agent (nonpolar oils collecting agent and foaming agent) is fully dispersed, the floating agent of coal slime is insoluble or poorly soluble in Water, it is only that its is fully dispersed into substantial amounts of fine droplet, it could be uniformly mixed into coal slurry；2), by scattered flotation Medicament is blended in float coal slurry well, and nonpolar oils collecting agent forms relatively stable on the coal grain surface of different-diameter Oil film, improves the hydrophobicity of coal grain；3), floating agent is when coal grain surface generation physical-chemical reaction needs to have certain effect Between；4) float coal slurry, will be entered and be diluted to rational concentration range.

In the pretreatment process of coal slurry, the scattered of current flotation agent typically has three kinds of modes：

(1), mechanical dispersion

The serial ore pulp preprocessors of XY that China researches and develops the eighties in last century are that flotation agent is incorporated into after dosing nozzle, are borrowed The upper strata blade rotation helped in agitator arm stator mixer, mechanically disperses, because the linear velocity of agitator arm is limited, Only 8.0m/s, the droplet diameter disperseed is larger, is mixed in coal slurry not uniform enough, adds flotation agent consumption.

(2), emulsion dispersion

The water-jetting emulsor structure promoted the use of in some coal preparation plants of China, substantially press water are sprayed from nozzle at high speeds Go out, negative pressure is formed in jet chamber.Flotation agent is consequently inhaled and wrapped up in and is rolled onto among jet, through hydraulic blow, shearing, is separated into ＜ 15 μm of oil droplet, emulsion is sprayed by mixing tube.However, the water-jetting emulsor, is all generally the unilateral mode being used as medicine, should The gas pressure that mode causes jet to be subject to is unstable, and the mixture homogeneity between medicament and aqueous is often relatively low, still treats further Improve.

(3) aerosol dispersion

The eighties in last century in the serial kaskad apparatuses for pre-flotation pulp conditioning of XK that China begins to use, such as apply for artificial Tangshan state China Tech skill Patent name filed in 15 days January in 2010 of Co., Ltd is " the hybrid coal paste preprocessor of atomization " (application number： 201010033384.9) patent of invention text just disclose following technical scheme：It is by atomization system, upper box body and bottom The part of casing three is constituted.Atomization system is made up of main motor, flexible coupling, sleeve, haze disk and dosing funnel etc..Top Casing is that charging and flotation agent are atomized workspace, and there is center feed chute in casing outside, and there is overflow launder the left and right sides.Lower part box is Coal slurry and the well-mixed working space of flotation agent, the left and right sides is mounted on three pieces of upper slides and two pieces of lower skateboards, each slide plate Upper uniform contour bank bar.When actual use, flotation agent is flowed into the sleeve above the disk that hazes through dosing funnel and pipeline, and is splashed Fall in the Pan Zhengmianzhongxinqu that hazes, stick at a high speed rotation card on formed one layer of thin liquid film, under the influence of centrifugal force to Plate edge is moved, and is droplet by the saw cut of plate edge；Enter float coal Jiang Jing centers feed chute and be assigned to upper box body both sides In downflow weir, wide along weir is in waterfall shape overflow, and it meets during letting out with flotation agent droplet, and some droplet is by weight Power directly drops to first layer upper slide, afterwards, is mixed with the coal slurry of flotation agent by the bank bar of upper and lower slide plate, continuously jump up and Mixing so that coal slurry is sufficiently mixed with flotation agent droplet, until being discharged into flotation device from bottom half.As in field more Advanced coal slurry pretreatment unit, its flotation agent drop than emulsion dispersion drop will smaller an order of magnitude, dispersion effect compared with It is good；But, in actual use it has been found that the dispersion effect of floating agent relies on disk rotation of hazing in due to said structure To realize, a sealed shape casing for being used to form confined space is generally required, the meaningless of vaporific medicament can be avoided to fly away, The formation of its closed environment but often resulted in the disk working environment that such as hazes it is poor and be easy to send product bug, can not be for Slurries mixed process, which realizes observation directly perceived or even produces failure, also is difficult to many defects such as discovery in time, thus to execute-in-place and Maintenance work brings puzzlement；In addition, the disk that hazes of high-speed rotation, too high for motor rotation speed requirements, namely it must use Two grades of motors that rotating speed is up to 3000 revs/min can ensure its service behaviour, and this is all actual assembling, buys or even safeguard into Originally severe challenge is caused.

The content of the invention

It is an object of the invention to provide a kind of simple in construction, rational integrated form difficulty selects duff size mixing equipment, can be to entering Float coal mud plays good quenched effect, is especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, its operating efficiency is high and locates in advance Reason process is quick and convenient.

To achieve the above object, present invention employs following technical scheme：

A kind of integrated form difficulty selects duff size mixing equipment, it is characterised in that：This equipment at least includes blending bin, and charging aperture is located at At the top end face of blending bin and discharging opening be located at blending bin bottom end；Box cavity plumbing arrangement drive shaft is mixed, box cavity is mixed Electric field active layer, ultrasonic oscillation layer and action of forced stirring layer are from top to bottom sequentially arranged along drive shaft length direction；In blending bin Horizontally disposed lower electrode plate, the top wall level arrangement upper electrode plate of blending bin, two electrode reversal of plate polarity are relative with both Between region form above-mentioned electric field active layer；Inclination angle is set to fall plate below lower electrode plate, plate and lower floor's electricity are fallen in inclination angle Space constitutes ultrasonic oscillation layer between pole plate；It is in oblique from mixing chamber interior wall to drive axis direction that plate profile is fallen at inclination angle The bell mouth shape construction of extension, the ultrasonic wave shake plate arranged on plate for ultrasonic oscillation is fallen at inclination angle；Ultrasonic oscillation layer enters Fall plate low side and deposited with driving between centers in the port of export of mouth end connection electric field active layer and the high-end place for falling plate positioned at inclination angle, inclination angle There is the gap fallen for mixed liquor, the gap constitutes the port of export of ultrasonic oscillation layer；Fall in plate and blending bin bottom at inclination angle Space constitutes above-mentioned action of forced stirring layer between wall, and the axial end for being located at action of forced stirring layer of drive shaft is from top to bottom co-axially mounted one The agitator arm of the group above, each agitator arm is arranged in inclination angle and fallen at immediately below plate, at least along the week of one group of agitator arm To stator wall is disposed with, the inner ring that stator wall falls plate by inclination angle postpones downwards to be formed；

This equipment also includes arranging the blast pipe for being passed through high-pressure blast in pressure air-dissolving case, the casing of pressure air-dissolving case, The arrival end for being used to connect blending bin discharging opening of casing is arranged for realizing the pan feeding dividing plate that the arrival end is opened and closed, pan feeding dividing plate Fastened with extension spring and be resisted against arrival end sentence closing the arrival end；The elastic recovery direction of extension spring and pan feeding dividing plate Opposing inlet end compress direction in the same direction, with casing pressure be less than designated value when pan feeding dividing plate extension spring can be overcome to reply Power so that the gap flowed into for mixed liquor is formed between pan feeding dividing plate and arrival end；The port of export connection flotation device of casing, goes out at this Arrange that, for realizing the discharge partition plate opened and closed at this, discharge partition plate is tensed with compression spring and closes the port of export at mouth end；Pressure The elastic recovery direction of contracting spring compresses direction in the same direction with discharge partition plate opposite outlet end, with casing pressure reach and specify Discharge partition plate can overcome compression spring restoring force during value so that be formed between discharge partition plate and the port of export for mixed liquor stream in casing The gap gone out.

There also is provided the stroke diaphragm agitator for pressure in auxiliary adjustment casing in the pressure air-dissolving case, stroke every The stirring region of film agitator is located between the arrival end of cabinets cavity and the port of export at region；Stroke diaphragm agitator includes water The flat stroke axle through casing tank wall, and drive the stroke axle to make the motor acted along the linear reciprocation of bar length direction； The rod end being located in the casing arrangement high polymer material barrier film of stroke axle；The film side of high polymer material barrier film is fixed in casing Projection at wall and the sleeve top gone out, center and the affixed arrangement of stroke shaft rod end of high polymer material barrier film；The stroke diaphragm Agitator is for two or more and along height such as casing tank walls circumferentially around uniform.

The air inlet connection high pressure positive blower of the blast pipe, air outlet is in the prong like for possessing multiple air outlets, and should Air outlet, which is submerged after casing feed liquor is finished below the mixed liquor liquid level of casing, to be located；Blast pipe body vertical is arranged in casing top End face simultaneously runs through the top end face；The pressure sensor for monitoring internal pressure is also arranged in casing.

Fall at inclination angle on plate and to set gradually multi-turn bank bar along mixed liquor direct of travel；In vertical, each circle bank bar Collectively form the concentric structure using drive axis as the center of circle；Often some ultrasonic wave shake plates, phase uniformly at intervals on circle bank bar Ultrasonic wave shake plate interval work on neighbour's circle bank bar.

The agitator arm is that along four groups of layered arrangement above and below drive shaft axial direction, the diameter of each group agitator arm is by upper Under increase successively；Stator wall profile present it is narrow under wealthy bell mouth shape construction, positioned at agitator arm and the stator wall of the superiors Between constitute rotor coordinate.

At the residing mixing box cavity cavity wall of action of forced stirring layer, the stirring plate washer for accelerating mixed liquor mixing efficiency is disposed with； Each stirring equal plate face plumbing arrangement of plate washer；Using etc. the circumference of height be distributed in multiple stirring plate washers in blending bin cavity wall as one group Plate washer unit, the plate washer unit for it is multigroup and along drive shaft axially in blending bin cavity wall it is uniform successively.

The false base spacer of one layer of horizontal tabular, the false base spacer and blending bin are disposed with the bottom face of action of forced stirring layer There is fit clearance between bottom face to sandwiched mixed cell；Mixed cell surge direction interlaced arrangement along mixing by barrier sheet and Into；Above-mentioned fit clearance constitutes unique circulation passage between action of forced stirring layer and blending bin discharging opening.

The charging aperture and drive shaft are coaxially arranged；Drive shaft is coaxially disposed driving whirlpool in the axial end positioned at charging aperture Wheel；The feeding pipe of mixed liquor for providing ore pulp and medicament possess the outlet nozzle of multiple levels and each outlet nozzle formation with Drive axis are the scroll structure in the center of circle；The liquid direction that goes out of each outlet nozzle is directed to drive the impeller blade of turbine to carry For driving turbine rotation power.

Feeding pipe import connects pan feeding ore pulp pipe and medicament pipe simultaneously；Medicament pipe is connected on chemical tank, medicament pipe along liquid Flow direction sets gradually diaphragm metering pump, control valve and medicament flowmeter.

Connected each other, arranged on transition pipe with transition pipe between the blending bin discharging opening and pressure air-dissolving tank inlet end For providing mixed liquor with the rear pump of stable output pressure.

The beneficial effects of the present invention are：

1) conventionally employed single structure of sizing mixing, is different from, the pretreatment of present invention collection electric field, ultrasonic wave cleaning, pressure are adjusted Slurry and efficient mechanical are sized mixing in one, and the depth for realizing difficult floating fine slime is sized mixing modification；It can be played very to entering float coal mud Good quenched effect, is particularly suitable for the modification of sizing mixing of difficult floating Bed for Fine Coal.

Compared with the defect such as the mixing that traditional single structure of sizing mixing is brought is uneven or mixing efficiency is low：One Aspect, the present invention takes full advantage of electric field active layer, ultrasonic oscillation layer and forces to stir based on multiple tracks centralized processing process The layered shaping technique that layer is constituted is mixed, the follow-up high pressure air-dissolving box structure of collocation is final to realize the efficient of relative mixed liquor Mixing and treatment effect, its treatment effeciency and mixing uniformity can be obviously improved.On the other hand, the refinement group of each structure Cheng Zhong, electric field active layer can effectively destroy the electric double layer and hydration shell on coal slime surface, activate medicament ion, be easy to medicament Coal slime surface spreading and parcel, improve the hydrophobicity of coal grain.Ore pulp is after ultrasonic oscillation layer, and the height ash of coal grain surface adhesion is thin Mud is degraded, and hydrophobic surface is exposed, and gas-liquid interface tension force reduction, hydration shell effect dies down, the adhesion of medicament and coal slime Probability increase, improves the floatability of coal slime.The then further formation of favourable stirring space high shear environment of action of forced stirring layer.Plus The effect of pressure solution gas tank, then be the solubility increase for causing gas in casing, and form water bag gaseity.When via above-mentioned When mixed liquor after pressurization is inputted to flotation device, pressure reduction, the gas of dissolving will be in the form of micro-bubble from ore pulp Separate out.The microvesicle that this kind of mode is separated out has that diameter is small, decentralization is high, gas-liquid interface is big, selectively preferential in hydrophobicity The features such as higher surface is separated out.In addition, designed by import and export unique in pressure air-dissolving case, when pressure is big in casing Automatically open up the port of export and close arrival end with pressure release discharge opeing；And when pressure is less than designated value in casing, it is automatic to close outlet Hold and open arrival end to put aside pressure again and fill new mixed liquor, so that gas during for lower sub-high pressure is dissolved in water and phase Pressure discharge operations are answered to provide guarantee.

To sum up, the present invention is simple in construction and reasonable, can play good quenched effect to entering float coal mud, be especially suitable for difficult floating The modification demand of sizing mixing of Bed for Fine Coal, its operating efficiency is high and preprocessing process is quick and convenient, needed for extremely meeting current producer The difficulty of high efficiency, facilitation and high mixture homogeneity selects the modernization of duff to size mixing modification demand.

2), pressure air-dissolving case, as one of emphasis of the present invention, it is not only the simple pressure by high-pressure blast Pour into, it is pressure controlled in casing to complete the respective diaphragms and spring of arrange in pairs or groups arrival end and the port of export.In other words, The present invention is also by using stroke diaphragm structure, by stroke diaphragm agitator, to realize the pressure purpose of the periodicity in casing. Stroke diaphragm structure herein, it is not traditional only to be used as the conventional of " ensuring that flow field space is in high turbulent environment " On the way, but using its change regulating effect under narrow volume for the volume, in the promotion macromolecule of stroke axial period When material septum is bloated, it is clear that narrow cabinets cavity volume diminishes, the gas poured into by blast pipe is forced to be pressed into mixed liquor It is interior to fill energy to complete water bag gas, and synchronously discharge partition plate is opened, the output operation of high pressure mixing liquid is completed therewith.In stroke The retraction of axial period and pull high polymer material barrier film bounce back when, now cabinets cavity volume increase, relative cabinets cavity Pressure reduces, while mixed liquor is persistently poured into by arrival end, synchronous with the mutual of the air exported with blast pipe Married operation, precondition is provided to fill energy step for above-mentioned water bag gas.By above-mentioned steps, flotation can be entered in mixed liquor A large amount of microvesicles can be synchronously produced during machine release of pressure, are finally created good conditions for follow-up floatation process.

Even if 3), in view of carrying out voltage supply and pressure release of pressure in periodic casing, it is also desirable to which certain monitoring part is entered The corresponding monitoring of row, the present invention is by arranging pressure sensor to complete above-mentioned functions.The blast pipe outlet of forked distribution, is conducive to High-pressure blast is uniformly dispersed along above-mentioned outlet air-out, with entrance low pressure mixed liquor further evenly, and in casing Gas-liquid mixed step is completed during inner high voltage.

4), the design of multi-turn bank bar on plate is fallen at inclination angle, it is ensured that large or fine granule possesses different when being advanced along bank bar Roll duration, and then causes thick, fine grained to there are different ultrasonic oscillation scavenging periods.Coarse granule is larger because of its particle, It is relatively slow therefore long by the ul-trasonic irradiation time along bank bar gait of march, and fine grained on the contrary is short by the ul-trasonic irradiation time. The adjacent turn ultrasonic wave shake plate of spacing movement, then cause each ultrasonic wave shake plate to have the corresponding pause finishing time, to extend The life-span of ultrasonic wave shake plate.

5), by the stator wall installed in the surrounding of agitator arm, so as to be conducive to the collisional mixing of material to operate.One side Face, the horn mouth profile of unique lower expansion shape of stator wall serves a certain degree of liquid flow point and dissipates purpose, mixed liquor is via fixed During sub- wall undershoot, it can be able to rapidly enter action of forced stirring layer with disperse state, to lift its stirring and mixing effect.Separately On the one hand, multiple layers of stirring blades wheel system, it is ensured that the height turbulent flow and action of forced stirring of mixed liquor mix purpose, follow-up plate washer of arranging in pairs or groups Unit, its stirring efficiency and mixed effect can obtain significant increase.

6), stirring space the false base spacer of bottom design and sandwiched installs mixed cell, mixed material quilt between the two Mixed cell body repeated segmentation and changed course simultaneously form vortex.Pass through the mixed cell, one side rectification ore pulp, on the other hand in fortune Increase the mixing collision probability of mineral and medicament during defeated, finally further to lift the mixed effect of mixed liquor.

7) turbine, is driven, the outlet nozzle for scroll structure of arranging in pairs or groups constitutes the scroll multiinjector jetting flow of the present invention Structure.Medicament is delivered to " larynx neck tube " on feeding pipe by diaphragm metering pump accurate measurement, and the design can allow medicament and ore pulp Uniform mixing.The outlet nozzle of scroll projects ore pulp so that from surrounding impact driving turbine, driving drives turbine rotation, and then band Four layers of tower-like agitator arm rotation of dynamic shaft coupling.One entirety of each outlet nozzle formation, in order to install and adjust flow angle, High-abrasive material is posted in each nozzle, service life is extended.Drive turbine to drive four layers of tower-like agitator arm rotation, be even more skilful The impact energy of mixed liquor is converted into the mechanical energy of drive shaft wonderfully, it is rational in infrastructure and overall more energy-saving.Kinetic energy is obvious The mixed liquor of reduction enters at a slow speed electric field active layer, also ensure that and is unlikely to because kinetic energy is excessive and each part of electric field active layer is produced Raw impact or it is too fast flow through, to ensure its electric field activation effect, and the service life of Synchronous lifting corresponding component.

8), the setting of rear pump, it is to avoid influence effect of the Characteristic fluctuation of blending bin fluid pressure to follow-up pressure air-dissolving case Really, further to ensure the stability of liquid supply pressure in pressure air-dissolving case.

Brief description of the drawings

Fig. 1 is structural representation of the invention；

Fig. 2 is the working condition schematic top plan view of driving turbine；

Fig. 3 is the board face structure elevational schematic view of upper electrode plate；

Fig. 4 is the plate face schematic top plan view that plate is fallen at inclination angle；

Fig. 5 is circumferentially schematic diagram of the plate washer unit along blending bin tank wall.

The component names corresponding relation for illustrating each structure and the present invention is as follows：

10- blending bin 20- drive shaft 31- lower electrode plate 32- upper electrode plates

40- falls at inclination angle plate 41- stator wall 42- bank bars

50- ultrasonic wave shake plate 60- agitator arm 70- casings

71- pan feeding dividing plate 72- extension spring 73- discharge partition plate 74- compression springs

75- stroke diaphragm agitator 75a- stroke axle 75b- motors

75c- high polymer material barrier film 75d- sleeve 76- blast pipes

The false base spacer 110- barrier sheets of 80- pressure sensors 90- stirring plate washers 100-

120- drives turbine 130- feeding pipe 140- chemical tanks

150- diaphragm metering pump 160- control valve 170- medicament flowmeters

180- transition pipe 190- rear pumps

Embodiment

For ease of understanding, here in connection with Fig. 1-5, described further below is made to the specific embodiment of the present invention：

1.1 critical piece introductions

(1) blending bin

The design of blending bin 10 is to take into full account that the uniform of pan feeding ore pulp feeds and tentatively mixed, to reach each section ore deposit Slurry has identical to contact mixing probability with medicament, so as to ultimately form the mixed liquor for possessing high mixture homogeneity.Blending bin 10 It can be cylindric or hexahedron shape, other profiles are alternatively certainly, be cylindric blending bin 10 as shown in Figure 1.Blending bin If the mixed structure for possessing different mixed functions of arrangement dried layer in 10, combination construction is layered with the runner formed from top to bottom. Each layer mixed structure mainly includes：The first layer electric field active layer being made up of upper electrode plate 32 and lower electrode plate 31, by Fall the second layer ultrasonic oscillation layer that plate 40 is constituted with ultrasonic wave shake plate 50, the plate washer unit structure with agitator arm 60 in inclination angle Into third layer action of forced stirring layer, each interlayer is cooperatively coupled to one another, to realize corresponding mixed function.

(2) scroll multiinjector jetting flow system

Scroll multiinjector jetting flow system at this, namely it is arranged in the feed system at the charging aperture of blending bin 10.Medicine Agent is delivered to " larynx neck tube " on feeding pipe 130 after the accurate measurement of diaphragm metering pump 150, namely Buddhist monk's pipe knot shown in Fig. 1 At structure, the design can allow medicament uniformly to be mixed with ore pulp.It is preliminary with medicament through scroll export structure as shown in Figure 3 Ore pulp can impact the driving turbine 120 being located in drive shaft 20 from surrounding after mixing, so that drive the driving turbine 120 to rotate, And then drive the agitator arm 60 being located at action of forced stirring layer to produce rotational action.Feeding pipe 130 is together with positioned at each of exit Outlet nozzle is an entirety, in order to install and adjust flow angle.High-abrasive material can be posted in outlet nozzle, to extend it Service life.Driving turbine 120 drives the agitator arm 60 of four layers of tower-like arrangement to rotate, so as to dexterously move the jet of liquid The mechanical energy required for stirring in action of forced stirring layer can be converted into, its is rational in infrastructure and energy-saving, the ore deposit that kinetic energy is obviously reduced Starch and electric field active layer is entered by the charging aperture of blending bin 10, and every follow-up pretreatment can be carried out successively.

(2) electric field active layer

Electric field active layer is the cathode circuit plate (namely upper electrode plate 32) and lower annular negative electricity by upper, annular Road plate (namely lower electrode plate 31) is constituted.Cathode circuit plate and cathode traces plate are all arranged on the high molecular abrasion-proof plate of waterproof In, form an electric field action region from top to down.Cathode circuit plate profile construction in the form of annular discs, it is specific as shown in figure 3, negative Polar circuit plate is constructed similarly.Cathode traces plate is attached directly at the roof of blending bin 10 when installing, and cathode circuit plate or can Being anchored on radiating beam at the tank wall of blending bin 10 shown in reference picture 1, or be subject to overhung construction etc. it is affixed, without should It is directly fixed in drive shaft 20 and aggravates its operating burden.The arrangement of the electric field active layer, can be effectively accomplished destruction coal slime The electric double layer on surface and the purpose of hydration shell, so as to activate medicament ion so that medicament is easy in coal slime surface spreading and parcel, Ultimately facilitate the hydrophobicity for improving coal grain.

(3) ultrasonic oscillation layer

Ultrasonic oscillation layer is specific by supersonic generator, ultrasonic transducer, PLC control system and 4~6 circle ultrasonic waves Shake plate 50 is constituted.Ultrasonic wave shake plate 50 be arranged on along inclination angle fall plate 40 and on the bank bar 42 of ring uplift.The bank bar of protuberance 42, it is ensured that for the mobile obstacle effect of coal slime.Fine grained coal slime due to own wt, relatively more " light " across bank bar 42 and Fast marching, coarse granule coal slime is then more difficult to respect to sinking across bank bar 42, so as to also just cleverly utilize thick, thin Grain falls the different residence times on plate 40 at inclination angle, and causes possess the different ul-trasonic irradiation times.To be more conducive to understand, In Fig. 1 and Fig. 4, we from outside to inside be odd number circle (first lap and the 3rd circle) and even number circle by 50 points of ultrasonic wave shake plate (the second circle and the 4th circle).Alternation is interrupted by odd number circle and even number circle, each working time at 20 minutes, by PLC systems System control, so as to extend the service life of ultrasonic wave shake plate 50 at each circle by its alternation.Ore pulp is through ultrasonic oscillation After layer, the grey thin mud of height of coal grain surface adhesion is degraded, and hydrophobic surface is exposed；Gas-liquid interface tension force is reduced, hydration shell Effect dies down, the sticking probability increase of medicament and coal slime, so as to further improve the floatability of coal slime.

(4) action of forced stirring layer

The agitator arm 60 of four layers of unique tower-like arrangement in Fig. 1, constitutes the agent structure of action of forced stirring layer；Collocation figure Plate washer unit in 5, finally realizes the height turbulent flow stirring environment in action of forced stirring layer.The design of action of forced stirring layer takes into full account ore deposit The flow location form of slurry, the mixed liquor after the layer processing of above-mentioned ultrasonic oscillation is pooled to center discharging opening, into action of forced stirring layer. The surrounding of first layer agitator arm is provided with stator wall 41, is conducive to the collisional mixing of material, in tank wall provided with stirring plate washer 90, To realize high shear environment.At the bottom design double-deck false bottom, the shape of favourable stirring space high shear environment of action of forced stirring layer Into；Mixed cell is installed, mixed material is mixed cell cube repeated segmentation and alters course and form vortex, reaches height in double-deck vacation bottom Effect mixing purpose.

(5) pressure air-dissolving case

Well mixed medicament and ore pulp are by being pumped into pressure air-dissolving case.Pressure air-dissolving case includes casing 70, casing Arrangement constitutes blast pipe 76 and the corresponding grade part of stroke diaphragm agitator 75 by high pressure wind system and partial pressure pipe in 70.High pressure Wind system is connected with the top of casing 70.Pressure sensor 80 is also devised with the top of casing 70, PLC control system is according to pressure The open degree of valve at the value dynamic regulation blast pipe 76 of force snesor 80.The certain depth of partial pressure pipe insertion ore pulp, is conducive to Air is dissolved in ore pulp.The arrival end and the port of export of casing 70 are made up of elastomeric material and respective diaphragms.Arrival end is arranged into Expect dividing plate 71 and extension spring 72 of arranging in pairs or groups, port of export arrangement discharge partition plate 73 and compression spring 74 of arranging in pairs or groups.When stroke diaphragm stirring When the high polymer material barrier film 75c of device 75 heaves, pressure increases in casing 70, the back-moving spring 72 at arrival end in elastic force and Shunk in casing 70 under pressure, arrival end is closed, the gas existed in casing 70 is pressed into mixed liquor under high pressure；Phase Compression spring 74 at the port of export answered is pressed, and the port of export is opened, and the mixed liquor under pressurized water bag gaseity is conveyed To floatation equipment.When the high polymer material barrier film 75c of stroke diaphragm agitator 75 shrinks, pressure reduces in casing 70, entrance The jack-up of back-moving spring 72 at end, arrival end is opened；The compression spring 74 of the port of export is replied and so that discharge partition plate 73 is supported again The tight port of export, the port of export is closed, and mixed liquor is continued on through to be input into pressure air-dissolving case by blending bin 10, repeats above-mentioned pressurization Molten gas operation.

Because of the unique job state of pressure air-dissolving case, the water bag that high pressure is presented in the gas exported by pressure air-dissolving case is vaporous State.When the mixed liquor of the water bag gas of the high pressure is inputted to flotation device, due to the reduction of environmental pressure, dissolved inside mixed liquor Gas will quickly be separated out in the form of micro-bubble.Because the microvesicle that separates out has that diameter is small, decentralization after aforesaid way processing High, gas-liquid interface is big, selectively preferential the features such as separated out on the higher surface of hydrophobicity, it is clear that be very advantageous in follow-up floating Select the high-speeding and efficient operation of processing procedure.

Claims (9)

1. a kind of integrated form difficulty selects duff size mixing equipment, it is characterised in that：This equipment at least includes blending bin (10), charging aperture position At the top end face of blending bin (10) and discharging opening be located at blending bin (10) bottom end；The plumbing arrangement driving of blending bin (10) inner chamber Axle (20), blending bin (10) inner chamber is from top to bottom sequentially arranged electric field active layer, ultrasonic wave along drive shaft (20) length direction and shaken Swing layer and action of forced stirring layer；Lower electrode plate (31), the top wall level arrangement of blending bin (10) are horizontally disposed with blending bin (10) Upper electrode plate (32), two electrode reversal of plate polarity are relative to form above-mentioned electric field active layer with region therebetween；In lower floor's electricity Inclination angle is set to fall plate (40) below pole plate (31), inclination angle falls space between plate (40) and lower electrode plate (31) and constitutes ultrasound Ripple shakes layer；Fall plate (40) profile in the loudspeaker from blending bin (10) inwall to the oblique extension of drive shaft (20) axis direction in inclination angle Fall the ultrasonic wave shake plate (50) arranged on plate (40) for ultrasonic oscillation in mouth columnar structure, inclination angle；Ultrasonic oscillation layer enters The port of export of mouth end connection electric field active layer and the high-end place for falling plate (40) positioned at inclination angle, plate (40) low side and drive are fallen in inclination angle There is the gap fallen for mixed liquor between moving axis (20), the gap constitutes the port of export of ultrasonic oscillation layer；Fall plate in inclination angle (40) space constitutes above-mentioned action of forced stirring layer between the inwall of blending bin (10) bottom, and drive shaft (20) is located at action of forced stirring layer Axial end be from top to bottom co-axially mounted more than one group of agitator arm (60), each agitator arm (60) is arranged in inclination angle and fallen At immediately below plate (40), at least circumferentially there is stator wall (41) along one group of agitator arm, stator wall (41) is fallen by inclination angle The inner ring of plate (40) postpones for being formed downwards；

This equipment also includes arranging the blast pipe for being passed through high-pressure blast in pressure air-dissolving case, the casing (70) of pressure air-dissolving case (76), the arrival end for being used to connect blending bin (10) discharging opening of casing (70) is arranged for realizing the pan feeding that the arrival end is opened and closed Dividing plate (71), pan feeding dividing plate (71) with extension spring (72) fasten and be resisted against arrival end sentence closing the arrival end；Stretch bullet The elastic recovery direction of spring (72) compresses direction in the same direction with pan feeding dividing plate (71) opposing inlet end, with casing (70) interior pressure Pan feeding dividing plate can overcome extension spring (72) restoring force during less than designated value so that pan feeding dividing plate (71) forms confession between arrival end The gap that mixed liquor is flowed into；The port of export connection flotation device of casing (70), arranges at the port of export and is opened and closed for realizing at this Discharge partition plate (73), discharge partition plate (73) tenses with compression spring (74) and closes the port of export；The bullet of compression spring (74) Property reply direction and discharge partition plate (73) opposite outlet end compress direction in the same direction, to reach designated value in the interior pressure of casing (70) When discharge partition plate can overcome compression spring (74) restoring force so that between discharge partition plate (73) and the port of export formed for casing (70) The gap of interior mixed liquor outflow；

The stroke diaphragm agitator (75) for auxiliary adjustment casing (70) interior pressure is there also is provided in the pressure air-dissolving case, is rushed The stirring region of journey barrier film agitator (75) is located between the arrival end of casing (70) inner chamber and the port of export at region；Stroke diaphragm Agitator (75) includes level and runs through the stroke axle (75a) of casing tank wall, and drives the stroke axle (75a) to make along bar length direction Linear reciprocation action motor (75b)；The rod end being located in casing (70) the arrangement high polymer material of stroke axle (75a) Barrier film (75c)；The film side of high polymer material barrier film (75c) is fixed in the sleeve (75d) gone out by casing (70) inwall projection Top, center and the affixed arrangement of stroke axle (75a) rod end of high polymer material barrier film (75c)；The stroke diaphragm agitator (75) for two or more and along height such as casing (70) tank walls circumferentially around uniform.

2. a kind of integrated form difficulty according to claim 1 selects duff size mixing equipment, it is characterised in that：The blast pipe (76) Air inlet connection high pressure positive blower, air outlet is in possess the prong likes of multiple air outlets, and the air outlet enters in casing (70) Liquid, which is submerged after finishing below the mixed liquor liquid level of casing (70), to be located；Blast pipe (76) body vertical is arranged in casing (70) top The top end face is simultaneously run through in face；The pressure sensor (80) for monitoring internal pressure is also arranged in casing (70).

3. a kind of integrated form difficulty according to claim 1 or 2 selects duff size mixing equipment, it is characterised in that：Fall at inclination angle On plate (40) multi-turn bank bar (42) is set gradually along mixed liquor direct of travel；In vertical, each common structure of circle bank bar (42) Into the concentric structure using drive shaft (20) axis as the center of circle；Every equal some ultrasonic wave shake plates uniformly at intervals on circle bank bar (42) (50), ultrasonic wave shake plate (50) the interval work on adjacent turn bank bar (42).

4. a kind of integrated form difficulty according to claim 1 or 2 selects duff size mixing equipment, it is characterised in that：The paddle It is four groups along layered arrangement above and below drive shaft (20) axial direction to take turns (60), and the diameter of each group agitator arm from top to bottom increases successively Greatly；Stator wall (41) profile present it is narrow under wealthy bell mouth shape construction, positioned at agitator arm (60) and the stator wall of the superiors (41) rotor is constituted between to coordinate.

5. a kind of integrated form difficulty according to claim 4 selects duff size mixing equipment, it is characterised in that：In action of forced stirring layer institute Locate at the cavity wall of blending bin (10) inner chamber, be disposed with the stirring plate washer (90) for accelerating mixed liquor mixing efficiency；Each stirring plate washer (90) Equal plate face plumbing arrangement；With etc. the circumference of height to be distributed in multiple stirring plate washers (90) in blending bin (10) cavity wall be one group of shelves Slab element, the plate washer unit for it is multigroup and along drive shaft (20) axially in blending bin (10) cavity wall it is uniform successively.

6. a kind of integrated form difficulty according to claim 4 selects duff size mixing equipment, it is characterised in that：In action of forced stirring layer The false base spacer (100) of one layer of horizontal tabular is disposed with bottom face, between the false base spacer (100) and blending bin (10) bottom face There is fit clearance to sandwiched mixed cell；Mixed cell is formed by barrier sheet (110) along direction interlaced arrangement of surging is mixed； Above-mentioned fit clearance constitutes unique circulation passage between action of forced stirring layer and blending bin (10) discharging opening.

7. a kind of integrated form difficulty according to claim 1 or 2 selects duff size mixing equipment, it is characterised in that：The charging aperture It is coaxially arranged with drive shaft (20)；Drive shaft (20) is coaxially disposed driving turbine (120) in the axial end positioned at charging aperture；For The outlet nozzle and each outlet nozzle that the feeding pipe (130) for providing the mixed liquor of ore pulp and medicament possesses multiple levels form to drive Moving axis (20) axis is the scroll structure in the center of circle；Each outlet nozzle go out liquid direction be directed to drive turbine (120) wheel Blade drives turbine (120) rotational power to provide.

8. a kind of integrated form difficulty according to claim 7 selects duff size mixing equipment, it is characterised in that：Feeding pipe (130) enters Mouth connects pan feeding ore pulp pipe and medicament pipe simultaneously；On medicament pipe connection chemical tank (140), medicament pipe along liquid flow direction successively Diaphragm metering pump (150), control valve (160) and medicament flowmeter (170) are set.

9. a kind of integrated form difficulty according to claim 1 or 2 selects duff size mixing equipment, it is characterised in that：The blending bin (10) connected each other with transition pipe (180) between discharging opening and pressure air-dissolving tank inlet end, being arranged on transition pipe (180) is used for Mixed liquor is provided with the rear pump (190) of stable output pressure.