CN205199431U - Difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats - Google Patents
Difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats Download PDFInfo
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- CN205199431U CN205199431U CN201520977788.1U CN201520977788U CN205199431U CN 205199431 U CN205199431 U CN 205199431U CN 201520977788 U CN201520977788 U CN 201520977788U CN 205199431 U CN205199431 U CN 205199431U
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Abstract
The utility model relates to a slurry preliminary treatment field, concretely relates to is used for the difficult particulate coal slime of selecting of high ash to size mixing and a difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats of upgrading. The utility model discloses a mixing box, mixing box cavity top sets up medicament dispersion groove, and the medicament dispersion groove outside sets gradually annular dispersion unit and the silo is gone into to annular ore pulp, arrange the inclination in the discharge gate below of annular dispersion unit and fall the board, impeller arranges and falls board below department in the inclination, encircles impeller and arranged the stator wall, the liquid outlet of mixing box is located its bottom face department, mixing box top face sets up efflux nozzle and liquid stream pipeline, medicament dispersion groove is each other groove two to parallel arrangement and one -to -one efflux nozzle, two efflux nozzle's mixed liquid outlet end is all visited in the vallecular cavity in corresponding medicament dispersion groove. The utility model discloses can play fine quenching and tempering effect to going into float coal mud, especially be fit for the difficult upgrading demand of sizing mixing of floating the particulate coal, its work efficiency height and the preliminary treatment process is convenient fast.
Description
Technical field
The utility model relates to coal slurry preprocessing technical field, is specifically related to select fine slime to size mixing to size mixing with the floating Bed for Fine Coal degree of depth of the one of upgrading difficulty upgrading facility for the grey difficulty of height.
Background technology
Because the floatability of China's coal slime is generally poor, therefore coal slurry pretreatment is requisite link in floatation coal separation technique, is the prerequisite that flotation device obtains good technical-economic index.The pretreated necessity of coal slurry mainly contains following 4 points: 1), by floating agent (nonpolar oils collecting agent and foaming agent) fully disperse, the floating agent of coal slime is insoluble or be slightly soluble in water, only have and it is fully dispersed into a large amount of fine droplets, could by its Homogeneous phase mixing in coal slurry; 2), by the floating agent of dispersion be blended in float coal slurry well, nonpolar oils collecting agent forms comparatively stable oil film on the coal grain surface of different-diameter, improves the hydrophobicity of coal grain; 3), floating agent needs certain action time at coal grain surface generation physical-chemical reaction; 4) float coal slurry, will be entered and be diluted to rational concentration range.
In the pretreatment process of coal slurry, the dispersion of current flotation agent generally has three kinds of modes:
(1), mechanical dispersion
China is after the XY series ore pulp preprocessor that the eighties in last century researches and develops is that flotation agent is incorporated into dosing nozzle, by the upper strata blade rotary in agitator arm stator mixer, mechanically disperse, because the linear velocity of agitator arm is limited, be only 8.0m/s, the droplet diameter disperseed is comparatively large, is mixed to get even not, adds flotation agent consumption in coal slurry.
(2), emulsion dispersion
In the water-jetting emulsor structure that some coal preparation plants of China promote the use of, be roughly press water and spray from nozzle at high speeds, in jet chamber, form negative pressure.Flotation agent sucks thus and wraps up in and is rolled onto among jet, and through hydraulic blow, shearing, be separated into the oil droplet of <15 μm, emulsion is sprayed by mixing tube.But this water-jetting emulsor is all one-sided mode of being used as medicine usually, the gas pressure which causes jet to be subject to is unstable, and the mixture homogeneity between medicament and water liquid is often lower, still treats further improvement.
(3) aerosol dispersion
The XK series kaskad apparatus for pre-flotation pulp conditioning brought into use in China the eighties in last century, as application people be Tangshan Guohua Technology Co., Ltd in the patent name that on January 15th, 2010 applies for be " being atomized hybrid coal paste preprocessor " (application number: patent of invention text 201010033384.9) just discloses following technical scheme: its by atomization system, upper box body and lower part box three part form.Atomization system is made up of main motor, flexible coupling, sleeve, haze dish and dosing funnel etc.Upper box body is charging and flotation agent atomization workspace, and have center feed chute outside casing, there is overflow launder the left and right sides.Lower part box is the well-mixed working space of coal slurry and flotation agent, and the left and right sides is all provided with three pieces of upper slides and two pieces of lower skateboards, uniform contour bank bar on each slide plate.During actual use, flotation agent flows into through dosing funnel and pipeline and hazes in the sleeve of dish top, and splashes down at the Pan Zhengmianzhongxinqu that hazes, and the card sticking to High Rotation Speed forms one deck thin liquid film, under the influence of centrifugal force to plate edge motion, be droplet by the saw cut of plate edge; Entering float coal Jiang Jing center feed chute is assigned in the downflow weir of upper box body both sides, wide in waterfall shape overflow along weir, it meets with flotation agent droplet letting out in process, some droplet directly drops to ground floor upper slide by gravity, afterwards, be mixed with the bank bar of coal slurry by upper and lower slide plate of flotation agent, jump up continuously and mix, coal slurry is fully mixed with flotation agent droplet, enters flotation device until discharge from bottom half.As coal slurry pretreatment unit comparatively advanced in field, its flotation agent drop will a less order of magnitude than the drop of emulsion dispersion, and dispersion effect is better; But, it is found that when reality uses, dispersion effect due to floating agent in said structure all relies on dish rotation of hazing to realize, often need one for the formation of the sealed shape casing of confined space, the meaningless of vaporific medicament can be avoided to fly away, it is poor and be easy to send product bug, cannot realize direct vision for slurries mixed process and even produce fault being also difficult to many defects such as Timeliness coverage that the formation of its closed environment but often causes the dish working environment that such as hazes, thus bring puzzlement to execute-in-place and maintenance work; In addition, the dish that hazes of high-speed rotation, too high for drive motors rotation speed requirements, the secondary motor of rotating speed up to 3000 revs/min also namely must be adopted can to ensure its service behaviour, this is all actual assembling, purchase and even maintenance cost cause severe challenge.
Summary of the invention
The purpose of this utility model be to provide a kind of structure simple and reasonably the difficult floating Bed for Fine Coal degree of depth to size mixing upgrading facility, good modified effect can be played to entering float coal mud, especially be applicable to the upgrading demand of sizing mixing of difficult floating Bed for Fine Coal, its operating efficiency is high and preprocessing process is quick and convenient.
For achieving the above object, the utility model have employed following technical scheme:
A kind of difficult floating Bed for Fine Coal degree of depth is sized mixing upgrading facility, it is characterized in that: comprise blending bin and be arranged at the stepped mixing system in blending bin; The cavity top place of blending bin arranges medicament dispersion slot, the ore pulp feed chute of annular dispersal unit and ring-type is set gradually outside medicament dispersion slot, the external groove sidevall of described ore pulp feed chute is the tank wall of blending bin and madial wall forms overflow wall, enters the annular dispersal unit possessing shear-mixed function after the mixed liquor that the ore pulp overflowed and medicament dispersion slot place overflow mixes; Plate is fallen at the discharging opening arranged beneath inclination angle of annular dispersal unit; Plumbing arrangement driving shaft in blending bin, it is that the bell mouth shape upwarping extension to drive axis by blending bin tank wall constructs that plate is fallen at inclination angle, fall at inclination angle on plate and set gradually many bank bars along mixed liquor direct of travel, the gap having between plate and driving shaft and fall for mixed liquor is fallen at inclination angle; Driving shaft is also coaxially installed with agitator arm, and agitator arm is arranged in inclination angle and falls below plate and locate, and is furnished with stator wall around agitator arm, and the inner ring surface that stator wall falls plate by inclination angle is postponed downwards and formed; The liquid outlet of blending bin is positioned at its bottom face place;
Blending bin top end face is arranged for providing medicament dispersion slot with the fluid jet nozzle of the double block form of mixed liquor and for the fluid flow tube road to each fluid jet nozzle feed liquor; Fluid jet nozzle comprises outer tube body, and outer tube body profile is the necking down tubular structure that two ends internal diameter is thick and stage casing internal diameter is thin, and fluid flow tube road is communicated in one end of outer tube body, and the outer tube body other end forms mixture export end; In outer tube body, coaxial sleeve is provided with rotating shaft, the coaxially arranged active impeller in one end, close fluid flow tube road of rotating shaft and mixture export end coaxially arranges driven impeller; Fluid flow tube road is threeway columnar structure, wherein two siphunculus road is communicated with medicament pipeline and ore pulp pipeline respectively, in the tangential direction that the fluid direction on a siphunculus road connecting outer tube body is positioned at initiatively impeller and the line mixer of this siphunculus road tube chamber layout for tentatively mixing above-mentioned ore pulp and medicament; Medicament dispersion slot be each other groove to being arranged in parallel and two of one_to_one corresponding fluid jet nozzle; The mixture export end of two fluid jet nozzles all probes in the vallecular cavity of corresponding medicament dispersion slot.
The inner chamber place of outer tube body is fixed with for making mixed liquor impact the water conservancy diversion stator of driven impeller along driven impeller tangential direction; Outer tube body for settling one end of driven impeller to be the toroidal anemostat structure that bore is gradually thick, water conservancy diversion stator arrangement in driven impeller near initiatively impeller one end place.
The scroll impeller construction that water conservancy diversion stator is arranged in line centered by outer tube body axis, and the liquid stream guided flows to and turns to arrange in the same way with driven impeller.
Stator wall possesses the lower segment body of segment body and straight cylindrical structure on upper narrow lower wealthy bell mouth shape, and between the bottom external diameter of hypomere body diameter and upper segment body, equal diameter is arranged; The described agitator arm be positioned on driving shaft is at least coaxially arranged two-layer, upper strata agitator arm diameter is less than lower floor's agitator arm diameter, and upper strata agitator arm is positioned at segment body and lower floor's agitator arm is positioned at lower segment body, two-layer agitator arm forms the double-deck agitator arm structure coordinated with stator wall jointly.
Along drive axis direction, arranging multiplayer action of forced stirring chamber from top to bottom in the blending bin cavity space that below plate is fallen at inclination angle, often organizes action of forced stirring chamber and comprises one group of double-deck agitator arm structure respectively; The liquid outlet in action of forced stirring chamber is all positioned at its bottom face place, and the stator wall in every one deck action of forced stirring chamber and agitator arm fit clearance all form its inlet; All pad at the bottom face place often organizing action of forced stirring chamber and be provided with the flat false base spacer of one deck, and there is fit clearance in order to sandwiched mixed cell in both; Mixed cell and annular dispersal unit form along mixed liquor flow direction interlaced arrangement by catch.
The wall place, chamber in each layer action of forced stirring chamber all arranges stroke diaphragm agitator; Described stroke diaphragm agitator comprises the stroke axle running through blending bin tank wall along driving shaft radial direction, and drives this stroke axle work along the drive motors of the linear reciprocation action of bar length direction, and macromolecular material barrier film arranged by the rod end being positioned at blending bin inner chamber of stroke axle; The film limit of macromolecular material barrier film is fixed in the sleeve top gone out by the inwall projection of blending bin, the center of macromolecular material barrier film and the affixed layout of stroke shaft rod end; The stroke diaphragm agitator at each layer action of forced stirring chamber place be four and the circumferential hoop along blending bin tank wall of equal altitudes around uniform.
The top cover of the ore pulp feed chute of described annular is provided with the cover plate of annular, and cover plate runs through plate body and arrange overfall, each overfall is uniform successively along the circumferential direction of cover plate.
Two groove ends of described medicament dispersion slot and relatively all constructing in sealing surface near a cell wall of annular dispersal unit, and this sealing surface is textural arranges the fluid hole being communicated with vallecular cavity; Between this sealing surface structure and annular dispersal unit, arrange transition overflow launder, the spillwag chute of described transition overflow launder and the inner ring surface coplanar of annular dispersal unit are arranged.
Diaphragm metering pump and medicament flowmeter is set gradually along liquid flow direction at medicament pipeline; Ore pulp pipeline arranges dilution water flow gauge.
The liquid outlet profile of described blending bin is straight cylindrical structure, in its liquid outlet, arrange mixed cell equally.
The beneficial effects of the utility model are:
1), combined type mode of sizing mixing will be following main developing direction, the utility model collection spray dispersion and pipeline mixing, fall plate mixing, high shear dispersed with stirring is mixed in one, the efficient degree of depth achieving coal slime is sized mixing upgrading function.Wherein, relatively traditional spray dispersion system, fluid jet nozzle of the present utility model make use of the high flow rate of mixed liquor on the one hand, thus by the coaxial synergy of active impeller with driven impeller, and then the automatic liquid stream realized under mechanical driver part stirs and mixing object.During work, utilize the flow velocity power of fluid, ore pulp is taken medicament and is poured at a high speed and initiatively drive it to rotate in impeller, initiatively impeller synchronously drives driven wheel rotation, and then make medicament along the impact, the stirring that are constantly subject to each impeller in outer tube body traveling process, and the impact force of adjoint outer tube body tube wall, finally make mixed liquor be forced emulsion dispersion and become fine droplet.On the other hand, before ore pulp and medicament enter outer tube body, the pipe-line mixer first arranged in this tube chamber tentatively to mix, thus ensures that whole mixed liquor enters in this fluid jet nozzle with more uniform admixture.The utility model is especially suitable in the preprocessing process of the many ore pulps of Bed for Fine Coal content, the Homogeneous phase mixing fuel requirements realizing medicament and ore pulp that can be efficient and controlled.
The mixed liquor sprayed by fluid jet nozzle, in medicament dispersion slot after preliminary mixing, synchronously falls in annular dispersal unit with the ore pulp overflowed in ore pulp feed chute.After being subject to annular dispersal unit shear-mixed, mixed liquor drops to inclination angle and falls on plate.Several groups of bank bars that plate designs are fallen by inclination angle, low ash content coarse granule is close to skateboarding and is subject to the stop of bank bar, and movement velocity is slow, and pretreatment time is long, impel its surface energy to adhere to enough and stable oil film, after entering flotation device, bubble floating can be adhered to quickly.And high-ash thin mud is owing to being worth without flotation, without the need to too much participating in stick operation, therefore can enter faster in next stage hybrid system.Its structure can while the coarse grained medicament parcel of the high ash content of guarantee and mix uniformly effect, optionally reduce the pretreatment time of the thin mud of high ash content, avoid the flotation agent that its adsorption is too much, their flotation speed is just slow down in follow-up flotation device, not only serve and farthest alleviate the thin mud of high ash to the effect of the pollution of floatation clean coal, to promote its operating efficiency, also greatly reduce the actual input amount of flotation agent, to be conducive to controlling its pretreatment cost simultaneously.
Agitator arm and stator wall form combination agitating vane, its integral installation in the center of blending bin, with the dish coaxial rotation that hazes.Material falls the top that plate most significant end flow into combination agitating vane from inclination angle, under the action of forced stirring effect of combination agitating vane, realize the collisional mixing of medicament and mineral further.By the stator wall installed in the surrounding of agitator arm, coordinate the mixture export end pipe of the body of from bottom to top feed, be conducive to the collisional mixing of material.Stirring space the false base spacer of bottom design and between the two sandwiched mixed cell is installed, mixed material mixed cell cube repeated segmentation and changed course also form eddy current; By this mixed cell, on the one hand rectification ore pulp, what in transportation, increase mineral and medicament on the other hand mixes collision probability.
To sum up state, the utility model is the novel size mixing equipment integrating multiple function of sizing mixing, and can play good modified effect to entering float coal mud, and be especially applicable to the upgrading demand of sizing mixing of difficult floating Bed for Fine Coal, its operating efficiency is high and preprocessing process is quick and convenient.
2), driven impeller feed liquor direction arranges water conservancy diversion stator, thus ore pulp can be impelled to impact the wheel body of driven impeller with the tangential direction of driven impeller, meets hydrodynamics optimal movement feature.Under the percussion in above-mentioned restriction direction, mixed liquor can obtain best agitator arm and impact, stirs and the colliding forces of water conservancy diversion stator, and its mixing dispersion effect can be promoted further.Certainly, be difficult to cut in driven impeller with tangential direction accurately completely via the fluid of water conservancy diversion stator; Therefore, during practical operation, fluid with close to tangential direction incision also can, mixing efficiency and the effect of original mixed liquor can be promoted equally.
3), the formation of double-deck agitator arm structure is also one of them emphasis of the present utility model.On the one hand.The horn mouth profile of the lower expansion shape of the uniqueness of stator wall, the liquid flow point served to a certain degree falls apart object, and mixed liquor, via in stator wall undershoot process, can be able to enter between agitator arm liquid level with disperse state rapidly, to promote its stirring and mixing effect.On the other hand, double-deck agitator arm system, ensure that the efficient and compulsory mixing object of mixed liquor, the equipment such as the stroke diaphragm agitator of arranging in pairs or groups follow-up, its stirring efficiency and mixed effect all can be greatly improved.
4), at blending bin tank wall stroke diaphragm agitator circumferentially, drive motors can move back and forth in certain stroke distances with dynamic stroke axle, thus drives macromolecular material barrier film back and forth movement.This structure can guarantee that the space, flow field of blending bin tank wall surrounding is in high turbulent environment, avoids the flow field environment of " center high shear, the low turbulent flow of surrounding ", is conducive to the modified effect of successively sizing mixing playing whole action of forced stirring chamber.
5), by the overflow groove structure of ore pulp feed chute, ensure that the uniformity of charging, rely on the enter material way adopting annular pan feeding, inner side overflow, to maintain discharging flow stabilizes, form certain discharge height, ore pulp can overflow ore pulp feed chute slowly and fully mix with medicament at annular dispersal unit place all the time simultaneously.Above ore pulp feed chute, be provided with cover plate, it is also overfall that cover plate has some ore pulp discharging openings, further to promote the even flushing effect of ore pulp along ore pulp feed chute.
6), during concrete operations, the mixed liquor sprayed by the mixture export end of fluid jet nozzle, preliminary mixing in medicament dispersion slot after reduction of speed, flow into secondary reduction of speed in transition overflow launder via fluid hole and mix, thus can with mix more all even flow velocity more slowly mode flow in annular dispersal unit, be mixed with each other with the ore pulp flowed out with the overfall place of ore pulp feed chute.Via above-mentioned steps, self blend step collocation later stage of mixed liquor mixes with the secondary between ore pulp, and its mixing efficiency is higher, and the uniformity of mixing also can effectively be ensured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
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 fluid jet nozzle;
Fig. 4 is the liquid stray arrow head of mixed liquor and the relation schematic diagram of active impeller position;
Fig. 5 is the liquid stray arrow head of mixed liquor and the relation schematic diagram of driven impeller position.
Illustrate each structure and component names corresponding relation of the present utility model is as follows:
A-chemical tank 10-fluid jet nozzle
11-outer tube body 12-rotating shaft 13-is impeller 14-driven impeller 15-water conservancy diversion stator initiatively
20-blending bin 30-medicament dispersion slot 31-fluid hole 32-transition overflow launder
40-annular dispersal unit 50-ore pulp feed chute 51-cover plate 52-overfall
60-falls at inclination angle plate 61-bank bar 70-driving shaft 71-agitator arm 72-stator wall
80-false base spacer 90-mixed cell
101-stroke axle 102-drive motors 103-macromolecular material barrier film 104-sleeve
110-diaphragm metering pump 120-medicament flowmeter 130-dilution water flow gauge
140-pipe-line mixer
Detailed description of the invention
For ease of understanding, composition graphs 1-5 herein, does following further describing to specific embodiment of the utility model:
1.1 critical piece introductions
(1) blending bin
The design of blending bin 20 takes into full account evenly feeding of pan feeding ore pulp, has identical contact mixing probability to reach each fraction pulp and medicament.
Blending bin 20 can be cylindric or hexahedron shape, certainly also can be other profiles, is cylindric blending bin casing as shown in Figure 1-2.And as shown in Figure 2, ore pulp feed chute 50 and medicament dispersion slot 30 are fixed by the tank wall place, top of blending bin 20.Dilution water feeding mouth is arranged in ore pulp feed chute 50 both sides, is conducive to regulating pulp density rapidly and uniformly.For ensureing surrounding even overflow, be provided with cover plate 51 above ore pulp feed chute 50, namely cover plate 51 has some ore pulp discharging openings is also 8 in overfall 52, Fig. 2, also can be able to adjust according to instrument size number of aperture.The mixed liquor that medicament dispersion slot 30 sprays in order to buffer accepts fluid jet nozzle 10, and make mixed liquor to enter in annular dispersal unit 40 after transition overflow launder 32 secondary buffer, to enter annular dispersal unit 40 together with the ore pulp that ore pulp feed chute 50 place overflows, realize its mixed function.
(2) jetting flow formula medicament decentralized system
The core of jetting flow formula medicament decentralized system is the fluid jet nozzle 10 shown in Fig. 3-5.Compared with conventional fluidic device, the pretreatment of the many ore pulps of this fluid jet nozzle more applicable Bed for Fine Coal content.Fine particle content is many, and coal slime pretreatment time of sizing mixing will be rectificated, and therefore medicament can mix with ore pulp integrally in advance, then after pipe-line mixer 140 tentatively mixes, tangentially feed fluid jet nozzle 10 place.Under the high flow rate power of mixed liquor, liquid stream drives initiatively impeller 13 to drive driven impeller 14 to rotate.The water conservancy diversion stator 15 that collocation designs above the pan feeding of driven impeller 14, water conservancy diversion stator 15 impels mixed liquor to impact driven impeller 14 with tangent line or close to line direction, meet hydrodynamics optimal movement feature, medicament, under the collisional mixing of the impact of impeller, stirring and water conservancy diversion stator 15, is able to compulsory emulsification and is dispersed into satisfactory fine droplet.
The medicament of fluid jet nozzle 10 and ore pulp supply, rely on the medicament pipeline of ore pulp pipeline and connection chemical tank a to realize.Wherein: on medicament pipeline and ore pulp pipeline, arrange that corresponding flow takes into account diaphragm metering pump, to realize traffic monitoring in use procedure and calibration function.
(3) mixed cell
The flow direction of this equipment according to ore pulp and the spatial arrangement structure of equipment, ingeniously reasonably devise mixed structure, it had both achieved fully mixing of medicament and ore pulp, played again the effect of stablizing whole pretreatment space fluid motion morphology, fluid is moved and meets the best flow location form of sizing mixing.Wherein, the ore pulp after dilution and medicament can flow into annular dispersal unit 40 after disperseing emulsion to converge above annular dispersal unit 40 together.On the one hand, annular dispersal unit 40 to be intersected by predetermined angular by the catch of some and is formed, and material is through annular dispersal unit 40 repeated segmentation and changed course and form eddy current, reaches mixing object.In addition, the annular cutting channel of annular dispersal unit 40, impels material to enter subsequent processing with best fluidised form, thus avoids material to fall the direct impact of plate 60 to inclination angle.
And other each mixed cells 90 in Fig. 1, equally for realizing the mixing of medicament and ore pulp and ensureing longer pretreatment time, to reach the decentralization of raising material and to guarantee mixed uniformly object.
(4) plate is fallen at inclination angle
Inclination angle is fallen plate 60 and is acted on: all pretreatment ore pulps all maximumly can play the effect of stirring agitator arm undoubtedly through stirring region; The exit design of plate 60 is fallen above combination agitating vane in inclination angle, and object impels all coal slurries all by the strongest stirring region, modified to realize sizing mixing of all coal slimes and even most difficult-to-float coal.And the inclination angle why plate 60 is designed to ramp shaped is fallen at inclination angle, being the movement velocity in order to reduce fluid, making it stop pretreatment space time longer.Several groups of bank bars 61 that design is fallen on plate 60 at inclination angle are the pretreatment times in order to distinguish large or fine granule, and move and be subject to the stop of bank bar in coarse granule close adhesion plate face, slowly, pretreatment time is longer for movement velocity; Otherwise fine grained movement velocity is faster, and required pretreatment time gets final product corresponding shortening, finally realizes the efficient mixed processing effect of its controlledization.
(5) action of forced stirring chamber
Action of forced stirring chamber mainly contains the multiple layer combination agitator arm be made up of stator wall 72 and agitator arm 71, and collocation stroke diaphragm agitator is formed.In Fig. 1, agitator arm 71 is divided into upper strata agitator arm and lower floor's agitator arm, to form double-deck agitator arm structure.In the surrounding of agitator arm 71, stator wall 72 is installed.Stroke diaphragm agitator is arranged at the blending bin 20 tank wall place of surrounding.Between every adjacent two layers action of forced stirring chamber with false base spacer 80 arrange in pairs or groups mixed cell 90 formed mixing runner.
During practical operation, material falls the top that plate 60 end flow into first combination agitating vane from inclination angle, under the constraint of stator wall 72, all ore pulps all flow through the stirring area of bilayer combination agitator arm, ore pulp and medicament, by the high shear of bilayer combination agitator arm and the collisional mixing effect of action of forced stirring effect and stator system, are able to efficient mixing.One group of stroke diaphragm agitator is arranged every 90 ° of angles at the tank wall of cylindrical blending bin 20, drive motors 102 moves back and forth in certain stroke distances with dynamic stroke axle 101, thus drive macromolecular material barrier film 103 back and forth movement, to guarantee that the space, flow field of tank wall surrounding is in high turbulent environment, avoid the flow field environment of " center high shear; the low turbulent flow of surrounding ", be conducive to the modified effect of sizing mixing playing whole stirring space.
Material after above-mentioned mixing, then flows into from the mixing runner bottom this layer of action of forced stirring chamber, carries out secondary agitation mixing to enter lower one deck action of forced stirring chamber, the like.The mixed cell 90 installed in mixing runner, further can play the effect of efficiently sizing mixing in this action of forced stirring space.
2,1 process aspect
This equipment plays good modified effect to entering float coal mud, is particularly suitable for the upgrading of sizing mixing of difficult floating Bed for Fine Coal.In a flotation or secondary flotation, floatation feed is cut thick equipment such as hydrocyclone group, hydrocyclone group and adds spiral, cuts thick sieve bend, cuts after a thick sieve bend adds technical gradings such as cutting thick sieve bend series connection and be divided into thick, fine fraction.Fine fraction final utilization on-mechanical agitation type flotation machine, as the sorting such as flotation column, air jet flotation machine, now uses this equipment better than traditional coal slurry pre-processing device effect.Reason is in this kind of technique, the ratio that fine fraction accounts for floatation feed is large, the pretreatment that coal slime needs is longer, the environment of sizing mixing needed is higher, but not agitation impeller flotator itself is sized mixing, function is more weak, use this equipment can significantly improve the effect of this type of technique, its operating efficiency and usefulness all can obviously be promoted.
Claims (10)
1. difficulty is floated the Bed for Fine Coal degree of depth and to be sized mixing a upgrading facility, it is characterized in that: the stepped mixing system comprising blending bin (20) and be arranged in blending bin (20); The cavity top place of blending bin (20) arranges medicament dispersion slot (30), medicament dispersion slot (30) outside sets gradually the ore pulp feed chute (50) of annular dispersal unit (40) and ring-type, the external groove sidevall of described ore pulp feed chute (50) is the tank wall of blending bin (20) and madial wall forms overflow wall, enters the annular dispersal unit (40) possessing shear-mixed function after the mixed liquor that the ore pulp overflowed and medicament dispersion slot (30) place overflow mixes; Plate (60) is fallen at the discharging opening arranged beneath inclination angle of annular dispersal unit (40); The upper plumbing arrangement driving shaft (70) of blending bin (20), it is that the bell mouth shape upwarping extension to driving shaft (70) axis by blending bin (20) tank wall constructs that plate (60) is fallen at inclination angle, fall at inclination angle on plate (60) and set gradually many bank bars (61) along mixed liquor direct of travel, the gap having between plate (60) and driving shaft (70) and fall for mixed liquor is fallen at inclination angle; Driving shaft (70) is also coaxially installed with agitator arm (71), agitator arm (71) is arranged in inclination angle and falls plate (60) below place, be furnished with stator wall (72) around agitator arm (71), the inner ring surface that stator wall (72) falls plate (60) by inclination angle is postponed downwards and is formed; The liquid outlet of blending bin (20) is positioned at its bottom face place;
Blending bin (20) top end face arranges and is used for providing medicament dispersion slot (30) with the fluid jet nozzle (10) of the double block form of mixed liquor and for the fluid flow tube road to each fluid jet nozzle (10) feed liquor; Fluid jet nozzle (10) comprises outer tube body (11), outer tube body (11) profile is the necking down tubular structure that two ends internal diameter is thick and stage casing internal diameter is thin, fluid flow tube road is communicated in one end of outer tube body, and outer tube body (11) other end forms mixture export end; Outer tube body (11) interior coaxial sleeve is provided with rotating shaft (12), the coaxially arranged active impeller (13) in one end, close fluid flow tube road of rotating shaft (12) and mixture export end coaxially arranges driven impeller (14); Described fluid flow tube road is threeway columnar structure, wherein two siphunculus road is communicated with medicament pipeline and ore pulp pipeline respectively, in the tangential direction that the fluid direction on a siphunculus road connecting outer tube body is positioned at initiatively impeller (13) and this siphunculus road tube chamber arranges the line mixer (140) being used for tentatively mixing above-mentioned ore pulp and medicament; Medicament dispersion slot (30) be each other groove to being arranged in parallel and two of one_to_one corresponding fluid jet nozzle (10); The mixture export end of two fluid jet nozzles (10) all probes in the vallecular cavity of corresponding medicament dispersion slot (30).
2. a kind of difficult floating Bed for Fine Coal degree of depth according to claim 1 is sized mixing upgrading facility, it is characterized in that: the inner chamber place of outer tube body (11) is fixed with for making mixed liquor impact the water conservancy diversion stator (15) of driven impeller (14) along driven impeller (14) tangential direction; Outer tube body (11) for settling one end of driven impeller (14) to be the toroidal anemostat structure that bore is gradually thick, water conservancy diversion stator (15) be arranged in driven impeller (14) near initiatively impeller (13) one end place.
3. a kind of difficult floating Bed for Fine Coal degree of depth according to claim 2 is sized mixing upgrading facility, it is characterized in that: the scroll impeller construction that water conservancy diversion stator (15) is arranged in line centered by outer tube body (11) axis, and the liquid stream guided flows to and turns to arrange in the same way with driven impeller (14).
4. the floating Bed for Fine Coal degree of depth of one difficulty according to claim 1 or 2 or 3 is sized mixing upgrading facility, it is characterized in that: stator wall (72) possesses the lower segment body of segment body and straight cylindrical structure on upper narrow lower wealthy bell mouth shape, and between the bottom external diameter of hypomere body diameter and upper segment body, equal diameter is arranged; The described agitator arm (71) be positioned on driving shaft (70) is at least coaxially arranged two-layer, upper strata agitator arm diameter is less than lower floor's agitator arm diameter, and upper strata agitator arm is positioned at segment body and lower floor's agitator arm is positioned at lower segment body, two-layer agitator arm forms the double-deck agitator arm structure coordinated with stator wall (72) jointly.
5. a kind of difficult floating Bed for Fine Coal degree of depth according to claim 4 is sized mixing upgrading facility, it is characterized in that: along driving shaft (70) axis direction, fall arranging multiplayer action of forced stirring chamber from top to bottom in plate (60) blending bin below (20) cavity space at inclination angle, often organize action of forced stirring chamber and comprise one group of double-deck agitator arm structure respectively; The liquid outlet in action of forced stirring chamber is all positioned at its bottom face place, and the stator wall (72) in every one deck action of forced stirring chamber all forms its inlet with agitator arm (71) fit clearance; All pad at the bottom face place often organizing action of forced stirring chamber and be provided with the flat false base spacer (80) of one deck, and there is fit clearance in order to sandwiched mixed cell (90) in both; Mixed cell (90) and annular dispersal unit (40) form along mixed liquor flow direction interlaced arrangement by catch.
6. a kind of difficult floating Bed for Fine Coal degree of depth according to claim 5 is sized mixing upgrading facility, it is characterized in that: the wall place, chamber in each layer action of forced stirring chamber all arranges stroke diaphragm agitator; Described stroke diaphragm agitator comprises the stroke axle (101) running through blending bin (20) tank wall along driving shaft (70) radial direction, and driving this stroke axle (101) work along the drive motors (102) of the linear reciprocation action of bar length direction, macromolecular material barrier film (103) arranged by the rod end being positioned at blending bin (20) inner chamber of stroke axle (101); The film limit of macromolecular material barrier film (103) is fixed in sleeve (104) top gone out by the inwall projection of blending bin (20), the center of macromolecular material barrier film (103) and the affixed layout of stroke axle (101) rod end; The stroke diaphragm agitator at each layer action of forced stirring chamber place be four and the circumferential hoop along blending bin (20) tank wall of equal altitudes around uniform.
7. the floating Bed for Fine Coal degree of depth of one difficulty according to claim 1 or 2 or 3 is sized mixing upgrading facility, it is characterized in that: the top cover of the ore pulp feed chute (50) of described annular is provided with the cover plate (51) of annular, cover plate (51) runs through plate body and arrange overfall (52), each overfall (52) is uniform successively along the circumferential direction of cover plate (51).
8. the floating Bed for Fine Coal degree of depth of one difficulty according to claim 1 or 2 or 3 is sized mixing upgrading facility, it is characterized in that: two groove ends of described medicament dispersion slot (30) and relatively all constructing in sealing surface near a cell wall of annular dispersal unit (40), and this sealing surface is textural arranges the fluid hole (31) being communicated with vallecular cavity; Between this sealing surface structure and annular dispersal unit (40), arrange transition overflow launder (32), the spillwag chute of described transition overflow launder (32) and the inner ring surface coplanar of annular dispersal unit (40) are arranged.
9. the floating Bed for Fine Coal degree of depth of one difficulty according to claim 1 or 2 or 3 is sized mixing upgrading facility, it is characterized in that: set gradually diaphragm metering pump (110) and medicament flowmeter (120) at medicament pipeline along liquid flow direction; Ore pulp pipeline arranges dilution water flow gauge (130).
10. a kind of difficult floating Bed for Fine Coal degree of depth according to claim 5 is sized mixing upgrading facility, it is characterized in that: the liquid outlet profile of described blending bin (20) be that straight cylindrical constructs, and arranges mixed cell (90) in its liquid outlet equally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977788.1U CN205199431U (en) | 2015-11-27 | 2015-11-27 | Difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977788.1U CN205199431U (en) | 2015-11-27 | 2015-11-27 | Difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats |
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| Publication Number | Publication Date |
|---|---|
| CN205199431U true CN205199431U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520977788.1U Withdrawn - After Issue CN205199431U (en) | 2015-11-27 | 2015-11-27 | Difficult particulate coal degree of depth upgrading equipment of sizing mixing that floats |
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| Country | Link |
|---|---|
| CN (1) | CN205199431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327647A (en) * | 2015-11-27 | 2016-02-17 | 安徽理工大学 | Deep slurry mixing and modifying equipment for fine coal hard to float |
| CN111229476A (en) * | 2019-09-09 | 2020-06-05 | 安徽理工大学 | Jet stirring type flotation column with multi-connection stirring function |
-
2015
- 2015-11-27 CN CN201520977788.1U patent/CN205199431U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327647A (en) * | 2015-11-27 | 2016-02-17 | 安徽理工大学 | Deep slurry mixing and modifying equipment for fine coal hard to float |
| CN111229476A (en) * | 2019-09-09 | 2020-06-05 | 安徽理工大学 | Jet stirring type flotation column with multi-connection stirring function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20170531 |