CN105289389B - Equipment of deeply slurry mixing and modifying for coal slime - Google Patents

Abstract

The invention relates to the field of coal slurry pretreatment, in particular to equipment of deeply slurry mixing and modifying of coal slime for slurry mixing and modifying of high-ash fine coal slime difficult to float. The equipment comprises a mixing box; agentia dispersion tanks are arranged at the top of a chamber of the mixing box, and an annular dispersion unit and an annular ore pulp feed chutes are arranged at the outside of the agentia dispersion tanks in sequence; a fallplate with a dip angle is arranged below a discharge port of the annular dispersion unit; vane wheels are arranged below the fallplate with the dip angle, and stator walls encircle the vane wheels; a liquid outlet of the mixing box is formed in bottom end surface of the mixing box; double row side-by-side nozzles with dispersed jet flows for providing agentia mixed liquor to the agentia dispersion tanks are arranged at the top end surface of the mixing box; two agentia dispersion tanks are arranged in parallel along the tank direction; diffusers of each nozzle with the dispersed jet flow extents into chambers of corresponding agentia dispersion tank. The equipment can play a very good role in modifying of floated coal slime and is particularly suitable for the demand of slurry mixing and modifying of fine coal difficult to float, the work efficiency of the equipment is high and a treatment process is rapid and convenient.

Description

A kind of coal slime depth is sized mixing upgrading facility

Technical field

The present invention relates to coal slurry preprocessing technical field, and in particular to for one kind that high ash difficulty selects fine slime to size mixing and modify Coal slime depth is sized mixing upgrading facility.

Background technology

Because the floatability of China's coal slime is generally poor, therefore coal slurry pretreatment is requisite in floatation coal separation technique Link, is the prerequisite of the good technical-economic index of flotation device acquisition.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 in coal slurry；2), by scattered flotation Medicament is blended in well in float coal slurry, 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 will be diluted to rational concentration range.

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

(1), mechanical dispersion

The XY series ore pulp preprocessors 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 stator blade wheel blender, mechanically disperses, due to the linear velocity of impeller it is limited, only 8.0m/s, the scattered droplet diameter of institute is larger, mixes in coal slurry not uniform enough, increased flotation agent consumption.

(2), emulsion dispersion

In the water-jetting emulsor structure that some coal preparation plants of China promote the use of, substantially press water sprays from nozzle at high speeds Go out, in the indoor formation negative pressure of injection.Flotation agent is consequently inhaled and wraps up in and is rolled onto among jet, Jing hydraulic blows, shearing, is separated into< 15 μm of oil droplet, emulsion is sprayed by mixing tube.However, the water-jetting emulsor, the mode being generally all used as medicine for one side should Mode causes the gas pressure that jet is subject to unstable, and the mixing homogeneity between medicament and aqueous is often relatively low, still treats further Improve.

(3) aerosol dispersion

The XK series kaskad apparatuses for pre-flotation pulp conditioning begun to use in China the eighties in last century, such as apply for artificial Tangshan state China Tech skill Patent name filed in 15 days January in 2010 of company limited is " the hybrid coal paste preprocessor of atomization " (application number： 201010033384.9) patent of invention text just disclose technical scheme below：It is by atomization system, upper box body and bottom The part of casing three constitutes.Atomization system is made up of main motor, flexible coupling, sleeve, haze disk and dosing funnel etc..Top Casing is atomized working area for charging and flotation agent, 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 work 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 actually used, flotation agent Jing dosings funnel and pipeline are flowed in the sleeve above the disk that hazes, and are splashed Fall in the Pan Zhengmianzhongxinqu that hazes, to stick to and form one layer of thin liquid film in the at a high speed card of rotation, under the influence of centrifugal force to Plate edge is moved, and is droplet by the saw cut of plate edge；Enter float coal slurry Jing centers feed chute and be assigned to upper box body both sides It is in waterfall shape overflow along weir width in downflow weir, it meets during letting out with flotation agent droplet, some droplet is by weight Power directly drops to ground floor upper slide, afterwards, is mixed with the bank bar of the coal slurry of flotation agent by 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 box bottom.As in field more Advanced coal slurry pretreatment unit, its flotation agent drop than emulsion dispersion drop will less an order of magnitude, dispersion effect compared with It is good；But, it has been found that rotating because the dispersion effect of floating agent in said structure relies on the disk that hazes when actually used To realize, a sealed shape casing for forming 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, cannot be for Serosity mixed process realizes observation directly perceived or even produces failure also being difficult to many defects such as discovery in time, so as to give execute-in-place and Maintenance work brings puzzlement；Additionally, the disk that hazes of high-speed rotation, too high for motor rotation speed requirements, namely must adopt Rotating speed is up to 3000 revs/min of two grades of motors 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

The upgrading facility it is an object of the invention to provide a kind of simple structure and rational coal slime depth are sized mixing, can be floating to entering Coal slime plays good quenched effect, is especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, its high working efficiency and pretreatment Process is quick and convenient.

For achieving the above object, present invention employs technical scheme below：

A kind of coal slime depth is sized mixing upgrading facility, it is characterised in that：Including blending bin and be arranged in blending bin point Level hybrid system；Medicament dispersion slot is set at the cavity top of blending bin, and it is single that medicament dispersion slot is orderly arranged outside each annular dispersion Unit and the ore pulp feed chute of ring-type, the external groove sidevall of the ore pulp feed chute for blending bin tank wall and medial wall constitutes overflow wall, The medicament mixed liquor that the ore pulp that overflow goes out goes out with overflow at medicament dispersion slot enters the annular for possessing shear-mixed function after mixing Dispersal unit；Fall plate at the discharging opening arranged beneath inclination angle of annular dispersal unit；Plumbing arrangement drive shaft in blending bin, inclination angle Fall plate be from blending bin tank wall to drive axis at upwarp extension bell mouth shape construction, inclination angle fall on plate along mixing Liquid direct of travel sets gradually many bank bars, and inclination angle falls plate and has the gap fallen for mixed liquor between centers is driven；Drive shaft On be also coaxially installed with impeller, impeller is arranged in inclination angle and falls at plate lower section, and wound impeller is disposed with stator wall, and stator wall is by inclining Angle is fallen the internal ring of plate and is faced down and postpones for being formed；The liquid outlet of blending bin is located at its bottom face；

Blending bin top end face is provided for providing medicament dispersion slot with the spray dispersion of the double block form of medicament mixed liquor Shower nozzle, spray dispersion shower nozzle includes the body for possessing hollow lumen, and the body is Venturi tube；The entrance connection of body is outer Medicament pipeline outside the ore pulp pipeline in portion, the contraction section of body or venturi connection, the diffuser of body constitutes mixture export Pipe；Nozzle blade is arranged in the entrance end of body hollow lumen so that entrance formation separate chamber, sets on nozzle blade Put chamber residing for the charging aperture connection entrance of nozzle and the nozzle and chamber residing for discharge end connection contraction section；Nozzle blade Guide vane is arranged at the side plate face of chamber residing for entrance, each guide vane profile is in cambered surface parallel nozzle axle The arc sheet and entirety of line line centered on body axis is arranged in scroll；Nozzle is around uniform multiple along body axis And each nozzle is arranged in correspondingly at the close body axis place side of corresponding guide vane；Diffuser is along body axis Circumferentially distributed forked structure of tube body, each bifurcated of the forked structure of tube body is respectively formed one section of mixture export pipe；Medicament point Scattered groove be each other groove to two for being arranged in parallel；The diffuser of each spray dispersion shower nozzle probes into the vallecular cavity of corresponding medicament dispersion slot It is interior.

The charging aperture of the nozzle is in circular hole, and the cavity wall is consolidated with body for the close body cavity wall place side of guide vane Connect, guide vane is arranged near the dead in line that body axis place side extends the curved extended surface and nozzle for being formed；Body Diffuser in be disposed with mixing catch in scroll along body axis.

Stator wall possess it is upper it is narrow under wealthy bell mouth shape epimere and straight cylindrical construction hypomere, hypomere external diameter and epimere Equal diameter is arranged between the external diameter of bottom；The impeller in drive shaft is at least coaxially arranged two-layer, and upper strata impeller is straight Footpath is located in epimere less than lower floor's impeller diameter and upper strata impeller and lower floor's impeller is located in hypomere, two-layer impeller collectively form with The layer impeller structure that stator wall coordinates.

Arranging multiplayer along drive axis direction, in the blending bin cavity space that inclination angle is fallen below plate from top to bottom Action of forced stirring chamber, every group of action of forced stirring chamber includes respectively one group of layer impeller structure；The liquid outlet in action of forced stirring chamber is respectively positioned on it At bottom face, and the stator wall in each layer of action of forced stirring chamber constitutes its inlet with impeller fit clearance；Stir in per group of pressure To mix padded at the bottom face in chamber and be provided with one layer of flat false base spacer, and there is fit clearance to sandwiched mixing list in both Unit；Mixed cell and annular dispersal unit are formed by catch along mixed liquor flow direction interlaced arrangement.

Stroke diaphragm agitator is respectively provided with the cavity wall in each layer action of forced stirring chamber；The stroke diaphragm agitator is included along drive Moving axis extends radially through the stroke axle of blending bin tank wall, and drives the stroke axle to make the drive of the linear reciprocation action along bar length direction Galvanic electricity machine, the rod end arrangement macromolecular material barrier film positioned at mixing box cavity of stroke axle；The film side of macromolecular material barrier film is consolidated It is connected to the sleeve top gone out by the inwall projection of blending bin, center and the affixed cloth of stroke shaft rod end of macromolecular material barrier film Put.

Stroke diaphragm agitator at each layer action of forced stirring chamber be four and etc. height the circumference along blending bin tank wall Around uniform.

The cover plate of annular is covered with the top of the ore pulp feed chute of the annular, overfall is set through plate body on cover plate, Each overfall is uniform successively along the circumferential direction of cover plate.

Two groove ends of the medicament dispersion slot and a cell wall of relatively close annular dispersal unit are in closing surface construction, And arrangement connects the liquid outlet of vallecular cavity on the closing surface construction；Transition is set between the closing surface construction and annular dispersal unit Overflow launder, the spillwag chute of the transition overflow launder is arranged with the inner ring surface coplanar of annular dispersal unit.

Extended on the medicament pipeline of spray dispersion shower nozzle by chemical tank, and for supply jet distribution showerhead with ore pulp Ore pulp pipeline on, set gradually control valve and effusion meter along liquid flow direction.

The liquid outlet profile of the blending bin is constructed in straight cylindrical, same in its liquid outlet to arrange mixed cell.

The beneficial effects of the present invention is：

1), combination type mode of sizing mixing will be following main developing direction, the present invention collection spray dispersion and line-blending, fall The plate that falls mixing, high shear dispersed with stirring are mixed in one, and the efficient depth for realizing coal slime is sized mixing modification function.Wherein, phase For current traditional nozzle structure, the spray dispersion shower nozzle of the present invention is arranged at spray by adopting multi-nozzle configuration, collocation Guide vane above mouth feeding mouth, and guide vane number is identical with nozzle number, so as to promote ore pulp in rotating jet form Spray, ultimately facilitate the quick formation of jet chamber's negative pressuren zone and the efficient shearing suction of medicament.The anemostat of venturi end is opened Mouth not only causes the flow velocity of unit mixture export pipe of each crotch faster using the forked construction of duct, advantageously forms High shear environment；Simultaneously also can one multiplex realize a range of uniform discharge demand.The nozzle structure is succinctly closed Reason, can be efficient and controllable realize medicament, ore pulp or even clear water be uniformly mixed into material demand.

The medicament mixed liquor sprayed by spray dispersion shower nozzle, in medicament dispersion slot after preliminary mixing, with ore pulp feed chute The ore pulp that interior overflow goes out synchronously is fallen in annular dispersal unit.After by annular dispersal unit shear-mixed, mixed liquor falls Fall on plate to inclination angle.Several groups of bank bars designed on plate are fallen by inclination angle, low ash coarse granule is close to skateboarding and by bank The stop of bar, movement velocity is slow, and pretreatment time is long, promotes its surface energy to adhere to enough and stable oil films, into flotation device After can quickly adhere to bubble floating.And high-ash thin mud is without flotation due to being worth, without the need for excessive stick operation is participated in, therefore Can enter faster in next stage hybrid system.Its structure can ensure the coarse grained medicament parcel of high ash and uniform mixing effect While fruit, the pretreatment time of high ash thin mud is selectively reduced, it is to avoid the excessive flotation agent of its surface adsorption, Their flotation speed is just slow down in follow-up flotation device, is not only served and farthest mitigate high ash thin mud to flotation essence The effect of the pollution of coal, to lift its work efficiency, while the actual input amount of flotation agent is also greatly reduced, to be conducive to Control its pretreatment cost.

Impeller and stator wall constitute combined impeller, and in the center of blending bin, disk coaxially turns with hazing for its integral installation It is dynamic.Material falls the top that plate most significant end is flowed into combined impeller from inclination angle, under the action of forced stirring effect of combined impeller, enters one Step realizes the collisional mixing of medicament and mineral.The stator wall installed by the surrounding in impeller, coordinates the pipe of from bottom to top feed The mixture export pipe of body, is conducive to the collisional mixing of material.In the false base spacer of bottom design and between the two of stirring space Sandwiched installs mixed cell, and mixed material is mixed cell cube repeated segmentation and alters course and form vortex；By the mixed cell, One side rectification ore pulp, on the other hand increases the mixing collision probability of mineral and medicament in transportation.

To sum up state, the present invention is the new size mixing equipment for integrating various functions of sizing mixing, can play very to entering float coal mud Good quenched effect, is especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, the quick side of its high working efficiency and preprocessing process Just.

2), during practical operation, the arrangement of guide vane is a big emphasis of the present invention.By by guide vane by managing Rise at body lumen wall, until extend at the charging aperture of matched nozzle, so as to realize for the height of liquid at ore pulp pipeline Effect is oriented to purpose.Liquid is constantly accelerated along guide vane traveling process at ore pulp pipeline, and is being directed directly to spray After at mouth, jet chamber is incident upon by nozzle in rotating jet mode, it is final to drive the efficient shearing of medicament to suck.Mixing catch Arrangement, can further realize online just mixed effect of the whole fluid jet nozzle with respect to mixed liquor, just repeat no more herein.

3), the formation of layer impeller structure is also one of emphasis of the present invention.On the one hand.Stator wall it is unique under Expand the horn mouth profile of shape, serve a certain degree of liquid stream dispersion effect, during mixed liquor is via stator wall undershoot, can It is able to rapidly enter between impeller liquid level, to lift its stirring and mixing effect with disperse state.On the other hand, layer impeller body System, it is ensured that the efficient and compulsory mixing purpose of mixed liquor, the equipment such as follow-up stroke diaphragm agitator of arranging in pairs or groups, its stirring effect Rate and mixed effect are obtained significant increase.

4), the stroke diaphragm agitator in blending bin tank wall circumferentially, motor can be with dynamic stroke axle certain Move back and forth in stroke distances, so as to drive macromolecular material barrier film back and forth movement.The structure can ensure that blending bin tank wall surrounding Flow field space in high turbulent flow environment, it is to avoid the flow fields environment of " center high shear, the low turbulent flow of surrounding ", be conducive to playing whole The quenched effect of successively sizing mixing in individual action of forced stirring chamber.

5), by the overflow groove structure of ore pulp feed chute, it is ensured that the uniformity of charging, by using annular pan feeding, interior The pan feeding mode of side overflow, to maintain out-feed liquid stream to stablize, while forming certain discharge height, ore pulp can slowly overflow all the time Flow out ore pulp feed chute and be sufficiently mixed with medicament at annular dispersal unit.Cover plate is provided with above ore pulp feed chute, Cover plate is provided with some ore pulp discharging openings namely overfall, is imitated along the uniform overflow of ore pulp feed chute with further lifting ore pulp Really.

6), during concrete operations, the medicament sprayed by each forked mixture export pipe of spray dispersion shower nozzle mixes Liquid, in the medicament dispersion slot after preliminary mixing and reduction of speed, flows in transition overflow launder secondary reduction of speed and mixes via liquid outlet, from And flow in annular dispersal unit with flow velocity more slow way with mixing to be more uniformly distributed, with the overflow with ore pulp feed chute The ore pulp flowed out at mouthful is mixed with each other.Via above-mentioned steps, between itself blend step collocation later stage of medicament mixed liquor and ore pulp Secondary mixing, its mixing efficiency is higher, and the uniformity of mixing also can be effectively ensured

Description of the drawings

Fig. 1 is the structural representation of the present invention；

Fig. 2 is position relationship top view between ore pulp feed chute, medicament dispersion slot and annular dispersion dispersal unit；

Fig. 3 is the structural representation of spray dispersion shower nozzle；

Fig. 4 is the structure section schematic diagram at the diffuser of spray dispersion shower nozzle；

Fig. 5 is the position figure between the nozzle and guide vane of spray dispersion shower nozzle.

Illustrate each structure as follows with the component names corresponding relation of the present invention：

10- spray dispersion shower nozzles

10a- entrance 10b- contraction section 10c- venturi 10d- diffusers

11- nozzle blade 12- nozzle 13- guide vane 14- mixing catch

20- blending bin 30- medicament dispersion slot 31- liquid outlet 32- transition overflow launders

40- annular dispersal unit 50- ore pulp feed chute 51- cover plate 52- overfalls

60- falls at inclination angle plate 61- bank bar 70- drive shaft 71- impeller 72- stator walls

80- vacation base spacer 90- mixed cells

101- stroke axle 102- motor 103- macromolecular material barrier film 104- sleeves

110- chemical tank 120- control valve 130- effusion meters

Specific 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 20 is to take into full account uniformly feeding for pan feeding ore pulp, is had with medicament to reach each section ore pulp Identical contact mixing probability.

Blending bin 20 can be cylindric or hexahedron shape, and other profiles are alternatively certainly, as shown in Figure 1-2 as cylinder Shape mixing box body.And as shown in figure 1, fixing ore pulp feed chute 50 and medicament dispersion slot 30 at the top tank wall of blending bin 20. Dilution water feeding mouth is arranged in the both sides of ore pulp feed chute 50, is conducive to rapidly and uniformly adjusting pulp density.It is uniform to ensure surrounding Overflow, in the top of ore pulp feed chute 50 cover plate 51 is provided with, and cover plate 51 is provided with some ore pulp discharging openings namely overfall 52, in Fig. 2 For 8, can adjust also dependent on instrument size number of aperture.Medicament dispersion slot 30 is then to buffer reception spray dispersion shower nozzle 10 The medicament mixed liquor of ejection, and enable medicament mixed liquor that annular dispersal unit is entered after the secondary buffer of transition overflow launder 32 In 40, to enter annular dispersal unit 40 together with the ore pulp that goes out with overflow at ore pulp feed chute 50, its mixed function is realized.

(2) jet medicament disperse system

The core of jet medicament disperse system is the spray dispersion shower nozzle 10 shown in Fig. 3-5.Compared with conventional fluidic device, Spray dispersion shower nozzle 10 is using forked culvert type diffusion tubular construction, collocation four nozzles or more multiinjector and in the pan feeding of nozzle 12 Top design guide vane 13, so as to be more beneficial for the emulsifying and dispersion of medicament.

Multi-jet advantage is to project a plurality of fluids, and the surface area that fluid contacts is bigger, is more beneficial for medicament milkiness The generation of liquid.As shown in Figure 3 is designed with guide vane 13, guide vane number and nozzle number in the feeding mouth upper side wall of nozzle 12 It is identical, can effectively promote ore pulp with the ejection of rotating jet form, so as to be conducive to the formation of jet chamber's negative pressuren zone and cutting for medicament Cut suction.

The Cross section Design of diffuser 10d is culvert type as shown in Figure 4, so that mixed liquor are cut and dispersed into into multiply rotation Turn jet, advantageously form high shear environment, to reach its efficient shear-mixed effect.

The medicament of spray dispersion shower nozzle 10 and ore pulp are supplied, by ore pulp pipeline and the medicament pipeline of connection chemical tank 110 To realize.Wherein：On medicament pipeline and ore pulp pipeline arrange effusion meter 130, to realize use during traffic monitoring and Calibration function.Control valve 120 opens and closes respective line to folding.

(3) mixed cell

This equipment is ingenious reasonably to devise mixing knot according to the flow direction of ore pulp and the spatial arrangement structure of equipment Structure, it had both realized being sufficiently mixed for medicament and ore pulp, stably whole pretreatment space fluid motion morphology had been played a part of again, Fluid motion is set to meet the optimal flow location form sized mixing.Wherein, the ore pulp after dilution disperses with medicament dispersion emulsion in annular After the top of unit 40 is converged, annular dispersal unit 40 can be together flowed into.On the one hand, annular dispersal unit 40 is by a number of Catch presses predetermined angular and intersects composition, and material Jing annulars and alter course and form vortex at the repeated segmentation of dispersal unit 40, reach mixing Purpose.In addition, the annular cutting channel of annular dispersal unit 40, promotes material with optimal fluidised form and enters subsequent processing, so as to Material is avoided to fall the direct impact of plate 60 to inclination angle.

And other each mixed cells 90 in Fig. 1, it is equally used for realizing the mixing of medicament and ore pulp and ensures longer pre- Process time, to reach the dispersion for improving material and guarantee mixed uniformly purpose.

(4) plate is fallen at inclination angle

Fall plate 60 and act in inclination angle：All of pretreatment ore pulp all undoubtedly can play paddle through stirring region with maximum The effect of wheel；Fall the top of the exit design in combined impeller of plate 60 in inclination angle, it is therefore an objective to promote all of coal slurry by most Strong stirring region, it is quenched to realize sizing mixing for all coal slimes or even most difficult-to-float coal.And inclination angle falls why plate 60 designs It is, in order to reduce the movement velocity of fluid, to be allowed to stop pretreatment space time longer into the inclination angle of upper ramp shaped.Fall plate in inclination angle Several groups of bank bars 61 designed on 60 are then that, in order to distinguish the pretreatment time of large or fine granule, coarse granule is close to plate face and is moved and by bank The stop of bar, movement velocity is slow, and pretreatment time is longer；Conversely, fine grained movement velocity is faster, required pretreatment time It is corresponding to shorten, finally realize the high efficient mixed treatment effect of its controllableization.

(5) action of forced stirring chamber

Mainly there are the multiple layer combination impeller being made up of stator wall 72 and impeller 71, collocation stroke diaphragm stirring in action of forced stirring chamber Device is constituted.In Fig. 1,71 points of impeller is upper strata impeller and lower floor's impeller, to constitute layer impeller structure.Pacify in the surrounding of impeller 71 Equipped with stator wall 72.Stroke diaphragm agitator is arranged at the tank wall of blending bin 20 of surrounding.In every adjacent two layers action of forced stirring chamber Between with false base spacer 80 collocation mixed cell 90 formed mixing runner.

During practical operation, material falls the top that the end of plate 60 is flowed into first combined impeller from inclination angle, in stator wall Under 72 constraint, all of ore pulp all flows through the stirring area of bilayer combination impeller, and ore pulp and medicament receive the height of bilayer combination impeller Shearing and action of forced stirring effect and the collisional mixing effect of stator system, are able to high efficient mixed.In cylindrical blending bin 20 Tank wall arranges one group of stroke diaphragm agitator every 90 ° of angles, and motor 102 is with dynamic stroke axle 101 in certain stroke distances Interior reciprocating motion, so as to drive the back and forth movement of macromolecular material barrier film 103, to guarantee the flow field space of tank wall surrounding in high disorderly Stream environment, it is to avoid the flow fields environment of " center high shear, the low turbulent flow of surrounding ", is conducive to playing sizing mixing for whole stirring space Matter is acted on.

Material is Jing after above-mentioned mixing, then flows into from the mixing runner in this layer of action of forced stirring bottom of chamber portion, with strong into next layer Stir chamber processed carries out secondary stirring mixing, the like.The mixed cell 90 installed in mixing runner, can further play this The effect of efficiently sizing mixing in action of forced stirring space.

2nd, 1 process aspect

This equipment plays good quenched effect to entering float coal mud, is particularly suitable for the modification of sizing mixing of difficult floating Bed for Fine Coal.One In secondary flotation or secondary flotation, floatation feed adds spiral separating by thick equipment such as hydrocyclone group, hydrocyclone group is cut Machine, section thick sieve bend, a section thick sieve bend to add and be divided into thick, fine fraction after the technical gradings such as section thick sieve bend series connection.Fine fraction is final Using the such as sorting such as flotation column, air jet flotation machine of on-mechanical agitation type flotation machine, now using this equipment than traditional coal slurry Pre-processing device is better.Reason is that in this kind of technique, the ratio that fine fraction accounts for floatation feed is big, the pre- place that coal slime needs Reason is longer, and the environment of sizing mixing of needs is higher, rather than agitation impeller flotator function of sizing mixing in itself is weaker, can be bright using this equipment The aobvious effect for improving such technique, its work efficiency and efficiency can be obviously improved.

Claims (10)

1. a kind of coal slime depth is sized mixing upgrading facility, it is characterised in that：Including blending bin (20) and it is arranged at blending bin (20) Interior stepped mixing system；Medicament dispersion slot (30), medicament dispersion slot (30) outside are set at the cavity top of blending bin (20) The ore pulp feed chute (50) of annular dispersal unit (40) and ring-type is set gradually, the external groove sidevall of the ore pulp feed chute (50) is mixed The tank wall of mould assembling (20) and medial wall constitutes overflow wall, the ore pulp that overflow goes out is mixed with the medicament that medicament dispersion slot (30) place's overflow goes out Close and enter the annular dispersal unit for possessing shear-mixed function after liquid mixing；In the discharging opening lower section cloth of annular dispersal unit (40) Put inclination angle and fall plate (60)；Plumbing arrangement drive shaft (70) in blending bin (20), it is by blending bin (20) that plate (60) is fallen at inclination angle Tank wall upwarps the bell mouth shape construction of extension at drive shaft (70) axis, falls on plate (60) along mixed liquor traveling side at inclination angle To many bank bars (61) are set gradually, inclination angle to be fallen and have the gap fallen for mixed liquor between plate (60) and drive shaft (70)；Drive Impeller (71) is also coaxially installed with moving axis (70), impeller (71) is arranged in inclination angle and falls at plate (60) lower section, wound impeller (71) stator wall (72) is disposed with, stator wall (72) faces down to postpone and formed by the internal ring that plate (60) is fallen at inclination angle；Blending bin (20) liquid outlet is located at its bottom face；

Blending bin (20) top end face is provided for providing medicament dispersion slot (30) with the jet of the double block form of medicament mixed liquor Distribution showerhead (10), spray dispersion shower nozzle (10) includes the body for possessing hollow lumen, and the body is Venturi tube；Body Medicament pipeline outside ore pulp pipeline outside entrance (10a) connection, the contraction section (10b) of body or venturi (10c) connection, The diffuser (10d) of body constitutes mixture export pipe；Nozzle blade is arranged in entrance (10a) end of body hollow lumen (11) so that entrance (10a) forms separate chamber, nozzle (12) and the charging of the nozzle (12) are set on nozzle blade (11) Mouth connects chamber residing for entrance (10a) and discharge end connects chamber residing for contraction section (10b)；Nozzle blade (11) be located at into Guide vane (13) is arranged at the side plate face of chamber residing for mouth section (10a), each guide vane (13) profile is flat in cambered surface The arc sheet and entirety of row nozzle (12) axis line centered on body axis is arranged in scroll；Nozzle (12) is along body axle Wire loop is arranged in correspondingly the close body axis institute of corresponding guide vane (13) around uniform multiple and each nozzles (12) At side；Diffuser (10d) is along the circumferentially distributed forked structure of tube body of body axis, each bifurcated of the forked structure of tube body It is respectively formed one section of mixture export pipe；Medicament dispersion slot (30) be each other groove to two for being arranged in parallel；Each spray dispersion shower nozzle (10) diffuser (10d) is probeed in the vallecular cavity of corresponding medicament dispersion slot (30).

2. a kind of coal slime depth according to claim 1 is sized mixing upgrading facility, it is characterised in that：Nozzle (12) are entered Material mouth is in circular hole, and the cavity wall is affixed with body for the close body cavity wall place side of guide vane (13), and guide vane (13) is leaned on Nearly body axis place side extends the dead in line of the curved extended surface and nozzle (12) for being formed and arranges；The diffuser of body (10d) it is disposed with mixing catch (14) in scroll along body axis in.

3. a kind of coal slime depth according to claim 1 and 2 is sized mixing upgrading facility, it is characterised in that：Stator wall (72) has It is standby it is it is narrow under wealthy bell mouth shape epimere and straight cylindrical construction hypomere, wait directly between the bottom external diameter of hypomere external diameter and epimere Footpath is arranged；The impeller (71) in drive shaft (70) is at least coaxially arranged two-layer, and upper strata impeller diameter is less than down Layer impeller diameter and upper strata impeller be located at epimere in and lower floor's impeller be located at hypomere in, two-layer impeller is collectively formed and stator wall (72) the layer impeller structure for coordinating.

4. a kind of coal slime depth according to claim 3 is sized mixing upgrading facility, it is characterised in that：Along drive shaft (70) axis Direction, at inclination angle the arranging multiplayer action of forced stirring chamber in plate (60) blending bin (20) cavity space below from top to bottom is fallen, Every group of action of forced stirring chamber includes respectively one group of layer impeller structure；The liquid outlet in action of forced stirring chamber is respectively positioned at its bottom face, and The stator wall (72) in each layer of action of forced stirring chamber constitutes its inlet with impeller (71) fit clearance；In every group of action of forced stirring chamber Bottom face at pad and be provided with one layer of flat false base spacer (80), and there is fit clearance to sandwiched mixed cell in both (90)；Mixed cell (90) and annular dispersal unit (40) are formed by catch along mixed liquor flow direction interlaced arrangement.

5. a kind of coal slime depth according to claim 4 is sized mixing upgrading facility, it is characterised in that：Each layer action of forced stirring chamber Stroke diaphragm agitator is respectively provided with cavity wall；The stroke diaphragm agitator includes extending radially through blending bin along drive shaft (70) (20) the stroke axle (101) of tank wall, and drive the stroke axle (101) to make the driving electricity of the linear reciprocation action along bar length direction Machine (102), rod end arrangement macromolecular material barrier film (103) positioned at blending bin (20) inner chamber of stroke axle (101)；Macromolecule material The film side of material barrier film (103) is fixed in sleeve (104) top gone out by the inwall projection of blending bin (20), macromolecular material The center of barrier film (103) and the affixed arrangement of stroke axle (101) rod end.

6. a kind of coal slime depth according to claim 5 is sized mixing upgrading facility, it is characterised in that：At each layer action of forced stirring chamber Stroke diaphragm agitator be four and etc. height along blending bin (20) tank wall circumferentially around uniform.

7. a kind of coal slime depth according to claim 1 and 2 is sized mixing upgrading facility, it is characterised in that：The ore deposit of the annular The cover plate (51) of annular is covered with the top of slurry feed chute (50), overfall (52) is set through plate body on cover plate (51), it is each to overflow Head piece (52) is uniform successively along the circumferential direction of cover plate (51).

8. a kind of coal slime depth according to claim 1 and 2 is sized mixing upgrading facility, it is characterised in that：The medicament dispersion Two groove ends of groove (30) and a cell wall of relatively close annular dispersal unit (40) are in close surface construction, and the closing surface construction The liquid outlet (31) of upper arrangement connection vallecular cavity；Transition overflow launder is set between the closing surface construction and annular dispersal unit (40) (32), the spillwag chute of the transition overflow launder (32) is arranged with the inner ring surface coplanar of annular dispersal unit (40).

9. a kind of coal slime depth according to claim 1 and 2 is sized mixing upgrading facility, it is characterised in that：By chemical tank (110) Extend on the medicament pipeline of spray dispersion shower nozzle (10), and for supply jet distribution showerhead (10) with the ore pulp pipe of ore pulp Lu Shang, sets gradually control valve (120) and effusion meter (130) along liquid flow direction.

10. a kind of coal slime depth according to claim 4 is sized mixing upgrading facility, it is characterised in that：The blending bin (20) Liquid outlet profile construct in straight cylindrical, it is same in its liquid outlet that mixed cell (90) is set.