CN101804386B - Method and device for flotation by adopting spiral rotor and application - Google Patents
Method and device for flotation by adopting spiral rotor and application Download PDFInfo
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- CN101804386B CN101804386B CN 201010129013 CN201010129013A CN101804386B CN 101804386 B CN101804386 B CN 101804386B CN 201010129013 CN201010129013 CN 201010129013 CN 201010129013 A CN201010129013 A CN 201010129013A CN 101804386 B CN101804386 B CN 101804386B
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Abstract
The invention discloses a method for flotation by adopting a spiral rotor, which is characterized in that a floating device is provided with the spiral rotor which rotates to generate a spiral gas field; inflow ore pulp undergoes gas-liquid mixing with the spiral gas field over one time in the process of flowing through a spiral channel; and outflow ore pulp flows out of the floating device in an irreversible flow way. The spiral rotor is provided with a hollow rotor shaft in a vertical central region; at least one spiral blade is arranged on the outer surface of a lower shaft of the hollow rotor shaft; a rotor top cover is arranged on the top of the spiral blade; a hollow shaft cavity of the hollow rotor shaft is filled with compressed air; and the compressed air in the hollow rotor shaft enters into the abdominal cavity of the spiral blade through a rotor shaft air hole, is outwards ejected through a blade air hole and forms the spiral gas field inside and outside the spiral channel. The method and the device for flotation are applied to the flotation process of all solid materials which at least comprise non-ferrous ore, ferrous metal ore and nonmetallic ore, and particularly lean ore and complex and difficultly selected ore.
Description
Affiliated technical field
The present invention relates to a kind of mineral floating method and device and purposes, especially a kind of method for floating and device and purposes that adopts helical rotor belongs to the flotation technology field.
Background technology
Well-known method for floating, the bubble mineralization process is mainly completed in the bubble floating process, namely completes in going out to flow the ore pulp Disengagement zone, goes out to flow the ore pulp floating device that partly backflows and mixes floating with the ore pulp that becomes a mandarin.The functional objective of floating device is produce bubble and complete the initial mineralization process of bubble.More representational patent comprises:
A kind of floating device of No. 4078026 United States Patent (USP) propositions, its rotor has separately independently ore pulp passage and gas passage.The main thought of this structure is to allow rotor produce dynamic pressure compensate the hydrostatic pressure that increases along with rotor height, and the gross pressure that ore pulp is applied on dispersion face can be applied on this dispersion face equably.The main Types of this structure is called the OK rotor, and its vertical cross-section shape is downward convergent, and the form that arranges of rotor vertical vane can form ore pulp passage and the gas passage of isolation mutually.Air blasts gas passage by the armature spindle of hollow.Be provided with a horizontal cover plate on rotor blade, it can force ore pulp and air-flow to change and flow to, and makes them along the horizontal direction flow pass.Stator vane is vertically to install, and can eliminate rotor and go out to flow whirlpool in ore pulp.
A kind of floating device that No. 4800017 United States Patent (USP)s propose, it and said apparatus are similar, but channel function is different.Rotor body comprises a horizontal top cover and some vertically arranged rotor blades, and these blades have formed pump chamber.Air is sent to each pump chamber, in order to give the inflation of the ore pulp in flotation cell.The top of stator vane bends outwardly, and that the bottom is still is vertical.The flow direction that rotor goes out to flow ore pulp is mainly level.But stator has been installed a unsteady flow blade, it can effectively force fluid with the inclination angle of about 15 ° towards current downflow.
A kind of floating device that No. 844911 European patents propose is to be provided with a horizontal barrier at the rotor pump chamber middle part of floating device, makes up and flows out towards the rotor of the current downflow ore pulp along continuous straight runs that becomes a mandarin.
A kind of floating device of No. 6772885 United States Patent (USP) propositions constructs some rotor cavitys below the rotor top cover, the upper part of cavity begins downward-sloping from the cavity outer rim, forms the angle of 5-70 ° with horizontal plane, until the centre of cavity; On the rotor top cover, construct from armature spindle and begin to tilt obliquely upward, form the upper surface of 5-70 ° of angle with horizontal plane.By internal rotor and rotor top cover are improved, make rotor go out to flow ore pulp and flow through stator with uplink mode.This rotor structure has improved the suspendability of large proportion coarse grain particle in flotation cell.
A kind of floating device that CN2322686 proposes is to be provided with through hole at cylindrical rotor top cover and bottom, provides the stream ore pulp and builds the backflow passage of floating device of circulation up and down.
A kind of floating device that CN201239664 proposes by the false end and stabilier are set at bottom land, is guided out the stream ore pulp floating device that backflows.
The major defect of formerly method for floating existence is:
1) go out to flow the ore pulp floating device that partly backflows, form the stream ore pulp and " treat different things alike " with the ore pulp that becomes a mandarin, cause becoming a mandarin ore pulp treating capacity and target particles concentration thereof reduce, and then cause flotation efficiency to reduce.
2) floating device gas-liquid mixed efficient is lower.Floating device gas field, or be the lower convergence curved surface gas field that the rotation of rotor blade end face air flue produces, or be rotor pump chamber gas field.Under the environment of lower convergence curved surface gas field, the ore pulp that becomes a mandarin is to complete gas-liquid mixed in passing through curved surface gas field process; Under the environment of rotor pump chamber gas field, the ore pulp that becomes a mandarin is to complete gas-liquid mixed in rotor pump chamber gas field.These two kinds of gas-liquid mixed modes are disposable mixing, and incorporation time is very short, thereby gas-liquid mixed efficient is lower, causes flotation efficiency lower.
Due to defects, method for floating formerly, the floatation process time is longer, needs the flotation cell vallecular cavity to have larger volume.Known flotation cell list groove volume is by 10m
3Increase to 50m
3, 150m
3, 300m even
3Occurrence patterns trend grade dilution and complicated component along with mineral resources, the mineral resources proportion of middle-size and small-size reserves is constantly soaring, doing larger and larger by the flotation cell that method for floating formerly is leading, is to mislead flotation equipment manufacturing industry blindly towards the maximization future development.Therefore, deposit the problem of trend and formerly method for floating existence for the tax of mineral resources, research and development efficient is higher, lower, consumptive material method for floating and the equipment still less of consumption, and is necessary.
Summary of the invention
One of purpose of the present invention is to propose a kind of method for floating that adopts helical rotor.This method for floating has the flotation cell of miniaturization, can adapt to better the efficient flotation separation of lean ore and complicated difficult ore dressing, and consumptive material still less, and energy consumption, abrasion and reagent consumption are lower.
Two of purpose of the present invention is to propose a kind of helical rotor, makes the gas-liquid mixed better effects if of floating device, realizes completing the purpose of flotation main body process in floating device.
Three of purpose of the present invention is the purposes that propose above-mentioned method for floating and device.
The technical solution used in the present invention is: a kind of method for floating that adopts helical rotor, be provided with helical rotor in floating device, and helical rotor rotate to produce spiral gas field; Become a mandarin ore pulp in the process of helical duct of flowing through, carry out once above gas-liquid mixed with spiral gas field; Go out to flow ore pulp and flow out floating device with the irreversible type of flow.
Described spiral gas field is to form like this: the vertical central area at helical rotor is provided with hollow rotor shafts; Outer surface at hollow rotor shafts hypomere axle is provided with at least one cored screw blade, and helical blade surface is provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than; Be arranged with stator outside helical blade; Be provided with the rotor top cover at the helical blade top; Be provided with an above armature spindle pore on the hollow axial wall below the rotor top cover; Be full of compressed air in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards sprayed through Stoma of Leaves in the armature spindle pore enters the helical blade abdominal cavity, in helical duct and outer formation spiral gas field.Spiral gas field in described helical duct can be upwards to spray by an above Stoma of Leaves of row that radially is arranged in the helical duct bottom surface organ timbering formula spiral gas field that compressed air forms at least; The spiral gas field that described helical duct is outer can be towards drum type brake spiral gas field that stator radial spray compressed air forms at least by an above Stoma of Leaves that is arranged in the helical blade end face.
The described ore pulp that becomes a mandarin, be contain floating agent flow into the flotation pulp for the treatment of of floating device from the flotation cell external body, comprise become a mandarin ore pulp and apply the ore pulp that becomes a mandarin of ultrasonic energy of routine.
Describedly go out to flow ore pulp, complete the gas-liquid mixed process of setting in floating device after, flow out, enter out the ore pulp of stream ore pulp Disengagement zone from stator with the irreversible type of flow, go out to flow the process that ore pulp flows out the flotation cell body, comprise conventional out of flow procedure and the out of flow procedure that applies the ultrasonic energy field.
A kind of flotation unit that adopts helical rotor comprises flotation cell body and floating device, and floating device is located at the lower central area in the flotation cell body, it is characterized in that: be provided with helical rotor in floating device; The ore pulp that becomes a mandarin enters from the helical rotor bottom, in the process of helical duct of flowing through, carries out once above gas-liquid mixed with spiral gas field, and the irreversible outflow of trend stator.Described helical rotor, be provided with hollow rotor shafts in its vertical central area, outer surface at hollow rotor shafts hypomere axle is provided with at least one helical blade, be provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than at helical blade surface, be arranged with stator outside helical blade, be provided with the rotor top cover at the helical blade top, be full of compressed air in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards sprayed through Stoma of Leaves in the armature spindle pore enters the helical blade abdominal cavity, in helical duct and outer formation spiral gas field.
Described hollow rotor shafts is provided with an above armature spindle pore on the hollow axial wall below the rotor top cover.
Described helical blade is hollow-core construction, and helical blade surface is provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than; The surface of Stoma of Leaves is set, preferably helical blade end face and away from the helical blade end face of hollow rotor shafts; Stoma of Leaves exports up or radial arrangement, forms up or air-flow impulse force radially; Described helical blade, pitch are 20-600mm; Helical blade end face vertical axial diameter projected is 30-600mm.
Described rotor top cover comprises board-like top cover and disked closure at least; Rotor top cover external diameter 〉=stator vertical axial projection internal diameter, rotor top cover internal diameter overlaps with the hollow rotor shafts external diameter.
Described spiral gas field comprises the organ timbering formula spiral gas field of being located in helical duct and the drum type brake spiral gas field of being located at helical duct outer (being the helical blade end face) at least.Described organ timbering formula spiral gas field can be upwards to spray compressed air by an above Stoma of Leaves of row that radially is arranged in the helical duct bottom surface to form at least, and adjacent two row's Stoma of Leaves adopt to misplace and arrange; Described drum type brake spiral gas field can be to be formed towards stator radial spray compressed air by an above Stoma of Leaves that is arranged in the helical blade end face at least, and Stoma of Leaves is within the built-in mode of employing is located at the hollow interlayer of helical blade.
Adopt the method for floating of helical rotor and the purposes of device, comprise the floatation process that is applied to all solids material, described solid material comprises nonferrous metals ore, ferrous metal ore and nonmetallic ore at least, especially lean ore and complicated difficult ore dressing.
Know-why of the present invention and the course of work are: the lower central position arranges floating device in the flotation cell body, and helical rotor is set in floating device, the corresponding helical rotor setting ore pulp entrance that becomes a mandarin; Helical rotor provides compressed air through hollow rotor shafts, formation spiral gas field in rotation process.Become a mandarin ore pulp in the process of helical duct of flowing through, carry out once above gas-liquid mixed with spiral gas field, until complete the bubble mineralization process.That completes the bubble mineralization process goes out to flow ore pulp, under the helical duct guidance, flows out floating device with the irreversible type of flow.Realize thus completing flotation main body process in floating device.
Advantage of the present invention is:
1) ore pulp that becomes a mandarin carries out repeatedly gas-liquid mixed in floating device, makes the irreversible minimizing of residual target particles and floating agent trend, and target particles obtains maximizing and captures, and floating agent obtains maximum using.
2) go out to flow the irreversible outflow floating device of ore pulp, floatation process is irreversible procedure, overcomes the defective that the ore pulp target particles concentration that becomes a mandarin is diluted, and the mineral laden bubble quality is improved.
3) the bubble mineralization process concentrates in floating device and completes, and the floatation process time significantly shortens, and the flotation cell volume significantly reduces.
4) helical rotor does not have the pump chamber effect, and significantly extend service life.
5) the helical rotor rotation produces screw lifting power, and the groove patency that enters of the ore pulp that becomes a mandarin is greatly improved.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the structural representation of another embodiment of the present invention.
In Fig. 1,1, go out to flow the ore pulp Disengagement zone; 2, mineral syrup liquid; 3, mineral laden bubble enrichment region; 4, compressed air; 5, rotor top cover; 6, go out to flow ore pulp; 7, froth concentrate slurry outlet; 8, froth concentrate slurry; 9, floating device; 10, stator; 11, helical rotor; 12, helical blade; 13, Stoma of Leaves; 14, the ore pulp entrance that becomes a mandarin; 15, the ore pulp that becomes a mandarin; 16, hollow rotor shafts; 17, armature spindle pore; 18, helical duct; 19, organ timbering formula spiral gas field; 20, drum type brake spiral gas field; 21, spiral gas field; 22, coarse grain Tailings Slurry; 23, coarse grain Tailings Slurry outlet; 24, fine tailings slurry; 25, fine tailings slurry outlet; 26, flotation cell body; 27, froth concentrate slurry chute.
In Fig. 2,28, ultrasonic unit; 29, ultrasonic unit.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, but protection scope of the present invention is not limited to the described scope of embodiment.
As can be seen from Figure 1, the present invention is the method for floating that adopts helical rotor, is provided with helical rotor 11 in floating device 9, and helical rotor rotates and produces spiral gas field 21; Become a mandarin ore pulp 15 in the process of helical duct 18 of flowing through, carry out once above gas-liquid mixed with spiral gas field 21; Go out to flow ore pulp 6 and flow out floating device 9 with the irreversible type of flow.
Spiral gas field 21 is to form like this: the vertical central area at helical rotor 11 is provided with hollow rotor shafts 16; Outer surface at hollow rotor shafts hypomere axle is provided with at least one helical blade 12, and helical blade surface is provided with the Stoma of Leaves 13 that is communicated with hollow rotor shafts more than; Be arranged with stator 10 outside helical blade; Be provided with rotor top cover 5 at the helical blade top; Be provided with an above armature spindle pore 17 on the hollow axial wall below the rotor top cover; Be full of compressed air 4 in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards sprayed through Stoma of Leaves in the armature spindle pore enters cored screw blade abdominal cavity, helical duct 18 in outer formation spiral gas field 21.Spiral gas field in described helical duct can be the organ timbering formula spiral gas field 19 of spraying upwards by an above Stoma of Leaves of row that radially is arranged in the helical duct bottom surface that compressed air forms at least; The spiral gas field that described helical duct is outer can be the drum type brake spiral gas field 20 that is formed towards stator radial spray compressed air by an above Stoma of Leaves that is arranged in the helical blade end face at least.
The ore pulp 15 that becomes a mandarin be contain floating agent from the outside flotation pulp for the treatment of that flows into floating devices 9 of flotation cell body 26, comprise become a mandarin ore pulp and apply the ore pulp that becomes a mandarin of ultrasonic energy of routine.
Going out to flow ore pulp 6 is complete the gas-liquid mixed process of setting in floating device 9 after, flow out, enter out the ore pulp of completing flotation main body process of stream ore pulp Disengagement zone 1 from stator 10 with the irreversible type of flow, go out to flow the process that ore pulp flows out flotation cell body 26, comprise conventional out of flow procedure and the out of flow procedure that applies the ultrasonic energy field.
Embodiment one: a kind of helical rotor floating device
Flotation cell shown in Figure 1 adopts the helical rotor floating device.It is regional that floating device 9 is located at the interior lower central of flotation cell body 26, comprises helical rotor 11 and stator 10.Stator 10 is conventional stator.Helical rotor 11 is made of helical blade 12 and hollow rotor shafts 16.Wherein, the number of helical blade 12 (or number) is 1; Diameter 300mm; Pitch 50mm; Hollow interlayer thickness 2mm; Its end face Stoma of Leaves 13 aperture 1mm take M arranged radially mode of N row * every row to arrange; The top is provided with dish-shaped rotor top cover 5, top cover external diameter 400mm; Its end face Stoma of Leaves 13 is built-in pore, is formed by the ductway of being located in hollow interlayer.Hollow rotor shafts 16 is by the shaft part of helical blade 12 parcels, and its hollow axial wall is provided with the armature spindle pore 17 of an above aperture 2mm.
When helical rotor 11 rotates, and pass into compressed air 4, in the make progress organ timbering formula spiral gas field 19 of jet-stream wind of the interior formation of helical duct 18, (being the helical blade end face) forms the drum type brake spiral gas field 20 towards stator 10 radial spray air-flows outside helical duct 18.
Operation principle of the present invention is: become a mandarin ore pulp 15 under the effect of screw lifting power, enter helical duct 18 through the ore pulp entrance 14 that becomes a mandarin, often pass an exhaust post, namely carry out gas-liquid mixed one time; When the ore pulp that becomes a mandarin flows to rotor top cover 5 place, namely passed N exhaust post, the gas-liquid mixed number of times is also N time.The bubble moment mineralising that each gas-liquid mixed generates becomes mineral laden bubble, under helical duct 18 guidances, mineral laden bubble trend is passed drum type brake spiral gas field 20, again carry out gas-liquid mixed, through stator 10 guiding and current stabilizations, flow out floating device 9 with the irreversible type of flow.Along with the ore pulp 15 that becomes a mandarin passes through organ timbering formula spiral gas field 19, the irreversible minimizing of target particles trend in the ore pulp 15 that becomes a mandarin, the bubble mineralization trend is carried out fully.The ore pulp of realizing thus becoming a mandarin is completed flotation main body process in floating device.
Embodiment two: another kind of helical rotor floating device
Flotation cell shown in Figure 2 is a kind of improved structure of embodiment one, and basic structure is the same with embodiment one, adopts the helical rotor floating device.It is regional that floating device 9 is located at the interior lower central of flotation cell body 26, comprises helical rotor 11 and stator 10.Its characteristics are: be provided with ultrasonic unit 29 in the floating device porch, ultrasonic unit 29 is the integral type structure with flotation cell body 26, and ultrasonic frequency is 20kHz-1 * 10
6KHz, the sound intensity are 0.5-200w/cm
2The ore pulp 15 that becomes a mandarin enters in floating device 9 after ultrasonic unit 29 applies ultrasonic energy.
Operation principle of the present invention is: when becoming a mandarin ore pulp 15 when the ore pulp entrance 14 that becomes a mandarin enters ultrasonic unit 29, because of the ultrasonic energy field action of being set, solid particle is by high-efficiency washing, and floating agent is efficiently disperseed, and target particles is fully wrapped up by floating agent.The ore pulp that becomes a mandarin through ultrasonic energy is processed enters helical duct 18 under the effect of screw lifting power, often pass an exhaust post, namely carries out gas-liquid mixed one time; When the ore pulp that becomes a mandarin flows to rotor top cover 5 place, namely passed N exhaust post, the gas-liquid mixed number of times is also N time.The bubble moment mineralising that each gas-liquid mixed generates becomes mineral laden bubble, under helical duct 18 guidances, mineral laden bubble trend is passed drum type brake spiral gas field 20, again carry out gas-liquid mixed, through stator 10 guiding and current stabilizations, flow out floating device 9 with the irreversible type of flow.Along with the ore pulp that becomes a mandarin passes through organ timbering formula spiral gas field 19, the irreversible minimizing of target particles trend in the ore pulp that becomes a mandarin, the bubble mineralization trend is carried out fully.Realize that thus the ore pulp that becomes a mandarin apply ultrasonic energy completes flotation main body process in floating device.
As can be seen from Figure 2, the ore pulp that becomes a mandarin is applied ultrasonic energy before entering helical duct, can significantly strengthen the effect that target particles is wrapped up by floating agent, thereby further improve floating efficient and bubble mineralization effect.
Embodiment three: another kind of helical rotor floating device
As can be seen from Figure 2, ultrasonic unit 29 can also adopt split type mode to arrange.When carrying out time that ultrasonic wave processes, the ore pulp 15 that becomes a mandarin needs when longer, and for example 1-2 minute, adopt split type mode that ultrasonic unit 29 is set, have larger superiority.
The inventor finds in research process, and some mineral (as quartz type gold mine, differentiated silicate gold mine) adopt the helical rotor floating device, can obtain the very high target particles rate of recovery; Some mineral (as ultra-fine grain type gold mine, high chamotte mould low-grade zinc oxide ore) adopt the conventional flotation method, the target particles rate of recovery is very low, and adopt in the situation of helical rotor floating device, the ultrasonic energy that the ore pulp that becomes a mandarin is applied setting is processed 1-30 second, can significantly improve the target particles rate of recovery, and significantly reduce floating agent consumption; Some mineral (as cyanide gold-leaching mine tailing, conventional flotation mine tailing) are due to the residual leaching product of particle surface or floating agent covering, new floating agent is captured target particles often produce the negative interference effect, need to carry out the ultrasonic wave of long period processes, in this case, adopt split type ultrasonic unit to process to the ore pulp that becomes a mandarin, especially adopt the coil ultrasonic unit that the inventor invents to process, can obtain better flotation effect.
Can know from the conventional flotation process, before the ore pulp that becomes a mandarin enters flotation cell, the common setting operation of sizing mixing together, purpose is to allow floating agent fully wrap up target particles.For target particles is more fully wrapped up by floating agent, a lot of flotation mills just begin to add some floating agent at Grinding procedure.Embodiment two, especially three pairs of the present embodiment ore pulp that becomes a mandarin adopts ultrasonic unit to apply ultrasonic energy to process, and purpose is to obtain higher flotation effect.For example, the ore pulp that becomes a mandarin is provided with the spiral coil process of ultrasonic energy field irreversible flowing through, and the process that target particles is wrapped up by floating agent is irreversible encapsulation process, and the target particles quantity trend of not wrapped up by floating agent is zero; The process time that fully wraps up target particles due to floating agent is extremely short, can effectively restrain some floating agent and reduce drug effect because of oxidation.Obviously, adopt the floatation process of helical rotor significantly to shorten, for the exploitation the most efficient flotation reagents has been opened up more wide field.
Embodiment four: a kind of flotation cell that adopts helical rotor
Illustrated in figures 1 and 2 for a kind of flotation cell that adopts helical rotor, formed by flotation cell body 26, floating device 9 and the ultrasonic unit 29 of being located at flotation cell body bottom.Flotation cell body 26 is regular polygon cell body or circular cell bodies of limit number 〉=4, and its formation comprises froth concentrate slurry chute 27 and is located at the ultrasonic unit 28 of the flotation cell external wall of mineral syrup liquid below 2; Near and cell wall lower than mineral syrup liquid 2 on be provided with fine tailings slurry outlet 25, exporting 23 near being provided with the coarse grain Tailings Slurry on the cell wall of bottom land, be provided with the ore pulp entrance 14 that becomes a mandarin bottom the cell body of corresponding helical rotor 11, lowest part at the froth concentrate slurry chute 27 of being located at cell body top is provided with froth concentrate slurry outlet 7, and froth concentrate slurry chute arranges around flotation cell body top.
Floating device 9 is located at the lower central area in flotation cell body 26, is provided with helical rotor 11 in floating device; The ore pulp 15 that becomes a mandarin enters from the helical rotor bottom, in the process of helical duct 18 of flowing through, carries out once above gas-liquid mixed with spiral gas field 21, and the irreversible outflow of trend stator 10.Helical rotor 11 is provided with hollow rotor shafts 16 in its vertical central area, outer surface at hollow rotor shafts hypomere axle is provided with at least one helical blade 12, be provided with the Stoma of Leaves 13 that is communicated with hollow rotor shafts more than at helical blade surface, be arranged with stator 10 outside helical blade, be provided with rotor top cover 5 at the helical blade top, be full of compressed air 4 in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards spray through Stoma of Leaves 13 in armature spindle pore 17 enters the helical blade abdominal cavity, in helical duct 18 with outer formation spiral gas field 21.
Hollow rotor shafts 16 is provided with an above armature spindle pore 17 on the hollow axial wall below 5 at the rotor top cover.
Helical blade 12 is hollow-core construction, and helical blade surface is provided with the Stoma of Leaves 13 that is communicated with hollow rotor shafts 16 more than; The surface of Stoma of Leaves 13 is set, preferably helical blade end face and away from the helical blade end face of hollow rotor shafts; Stoma of Leaves 13 exports up or radial arrangement, forms up or air-flow impulse force radially; The pitch of helical blade 12 is 20-600mm; Helical blade end face vertical axial diameter projected is 30-600mm.
Rotor top cover 5 comprises board-like top cover and disked closure at least; Rotor top cover external diameter 〉=stator 10 vertical axial projection internal diameters, rotor top cover internal diameter overlaps with hollow rotor shafts 16 external diameters.
Spiral gas field 21 comprises at least the organ timbering formula spiral gas field 19 of being located in helical duct 18 and is located at helical duct 18 outer (being helical blade 12 end faces) drum type brake spiral gas field 20.Organ timbering formula spiral gas field 19 can be upwards to spray compressed air 4 by an above Stoma of Leaves 13 of row that radially is arranged in helical duct 18 bottom surfaces to form at least, and adjacent two row's Stoma of Leaves adopt to misplace and arrange; Drum type brake spiral gas field 20 can be to be formed towards stator 10 radial spray compressed air 4 by one that is arranged in helical blade 12 end faces above Stoma of Leaves 13 at least, and Stoma of Leaves 13 is within the built-in mode of employing is located at the hollow interlayer of helical blade.
Operation principle and the process of flotation cell are: the ore pulp 15 that becomes a mandarin enters ultrasonic unit 29 through the ore pulp entrance 14 that becomes a mandarin, and processes through setting ultrasonic energy, and target particles is by high-efficiency washing, and the floating agent that is efficiently disperseed fully wraps up, and becomes the hydrophobic particle.Stand the ore pulp 15 that becomes a mandarin that ultrasonic wave is processed, by helical rotor 11 screw liftings, enter helical duct 18 at ore pulp entrance 14 places of becoming a mandarin, carry out irreversible gas-liquid mixed with the organ timbering formula spiral gas field 19 of being located in helical duct, generate a large amount of bubbles and mineral laden bubble.Mineral laden bubble is guided by helical duct, preferentially flows out helical duct; Residual target particles and floating agent are proceeded gas-liquid mixed in helical duct, until bubble formation and bubble mineralization process are carried out fully.Flow out the mineral laden bubble of helical duct, during through drum type brake spiral gas field 20, again carry out gas-liquid mixed, further strengthen the bubble mineralization process and improve the mineral laden bubble quality, finally by stator 10 guiding current stabilizations, irreversible outflow floating device 9 enters out stream ore pulp Disengagement zone 1.Go out to flow ore pulp 6 and be the one-way spiral fluidised form.Mineral laden bubble is by screw lifting power, and emersion mineral syrup liquid 2, enter mineral laden bubble enrichment region 3 fast, through the restructuring enrichment, and output froth concentrate slurry 8.The froth concentrate slurry confluxes through froth concentrate slurry chute 27, flows out from froth concentrate slurry outlet 7.The fine grain particle and the coarse grain particle that are not adsorbed by bubble, realize the thickness separation by self gravitation in the helical flow process, form fine tailings slurry 24 through fine tailings slurry outlet 25 latent spouts, form coarse grain Tailings Slurry 22 screw settlings to the cell body bottom, through the latent spout of coarse grain Tailings Slurry outlet 23.Due to the ablation of ore pulp viscous force, the part desorption may occur in the target particles of mineral laden bubble adsorption in floating-upward process.Go out to flow desorption target particles and residual floating agent in ore pulp 6, under the ultrasonic energy field action that ultrasonic unit 28 provides, target particles obtains high-efficiency washing, and floating agent is efficiently disperseed, and floating agent fully wraps up the target particles of desorption; The desorption target particles that is fully wrapped up by floating agent, the bubble trap a large amount of more than needed by drum type brake spiral gas field 20 provides generate mineral laden bubble emersion mineral syrup liquid 2.Realize thus the floatation process of the flotation cell of employing helical rotor.
Can find out from Fig. 1 and Fig. 2, adopt method for floating and the flotation cell of helical rotor to have the following advantages:
1) the ore pulp setting that becomes a mandarin is applied the ultrasonic unit of ultrasonic energy, make floating agent fully wrap up target particles, complete floatation process for the ore pulp flash in floating device that becomes a mandarin and created sufficient and necessary condition.
2) pore that N row radially arranges is set in the helical duct bottom surface, makes the ore pulp that becomes a mandarin carry out N time gas-liquid mixed in irreversible flow process.The set-up mode of this spiral gas field when strengthening the gas-liquid mixed process, has strengthened order and the controllability of gas-liquid mixed process.Can make in theory the ore pulp that becomes a mandarin complete bubble mineralization process completely in the helical duct flow process.
3) setting of helical duct and pore thereof when raising becomes a mandarin ore pulp climbing power and directed flow mode, provides a kind of inertia force of tangential outflow helical duct to mineral laden bubble.Gas liquid high-efficiency mixes bubble and the mineral laden bubble thereof that produces, because of the volume instantaneous expansion, and the uncovered outflow of trend helical duct.It is reverse that the inertia traffic direction of drum type brake spiral gas field and helical duct go out to flow the inertia flow direction of ore pulp and mineral laden bubble, is conducive to strengthen the gas-liquid mixed effect that the stream ore pulp.And the cavitation erosion defective that rotor structure formerly exists can be effectively eliminated in the uncovered setting of helical duct.
4) go out to flow ore pulp and flow out floating device with the irreversible type of flow, the ore pulp that becomes a mandarin flows into floating device in the one-way flow mode, effectively overcome the target particles concentration of the ore pulp that becomes a mandarin by the lower deficiency that goes out to flow the ore pulp dilution of target particles concentration, thereby prevent that effectively the mineral laden bubble quality from reducing, flotation cell unit volume disposal ability is significantly improved, processing time significantly shortens, and floating agent, abrading-ball consumption, energy consumption and flotation cell body significantly reduce with material consumption.
5) in the ultrasonic energy field that goes out to flow the ore pulp Disengagement zone and arrange setpoint frequency and the sound intensity, using the target particles of desorption in the stream ore pulp and the bubble more than needed that residual floating agent is gone out to flow in ore pulp fully captures, utilize again bubble to Efficient Damping characteristic and the strain of ultrasonic cavitation bubble particle flux, further accelerate the ascent rate of mineral laden bubble.
Claims (8)
1. method for floating that adopts helical rotor is characterized in that: be provided with helical rotor in floating device, helical rotor rotates and produces spiral gas field; Become a mandarin ore pulp in the process of helical duct of flowing through, carry out once above gas-liquid mixed with spiral gas field; Go out to flow ore pulp and flow out floating device with the irreversible type of flow; Described spiral gas field is to form like this: the vertical central area at helical rotor is provided with hollow rotor shafts; Outer surface at hollow rotor shafts hypomere axle is provided with at least one cored screw blade, and helical blade surface is provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than; Be arranged with stator outside helical blade; Be provided with the rotor top cover at the helical blade top; Be provided with an above armature spindle pore on the hollow axial wall below the rotor top cover; Be full of compressed air in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards sprayed through Stoma of Leaves in the armature spindle pore enters the helical blade abdominal cavity, in helical duct and outer formation spiral gas field; Spiral gas field in described helical duct is upwards to spray by an above Stoma of Leaves of row that radially is arranged in the helical duct bottom surface organ timbering formula spiral gas field that compressed air forms at least; The spiral gas field that described helical duct is outer is towards drum type brake spiral gas field that stator radial spray compressed air forms at least by an above Stoma of Leaves that is arranged in the helical blade end face.
2. the method for floating of employing helical rotor as claimed in claim 1, it is characterized in that: the described ore pulp that becomes a mandarin, be contain floating agent flow into the flotation pulp for the treatment of of floating device from the flotation cell external body, comprise become a mandarin ore pulp or apply the ore pulp that becomes a mandarin of ultrasonic energy of routine.
3. the method for floating of employing helical rotor as claimed in claim 1, it is characterized in that: describedly go out to flow ore pulp, complete the gas-liquid mixed process of setting in floating device after, flow out, enter out the ore pulp of stream ore pulp Disengagement zone from stator with the irreversible type of flow, go out to flow the process that ore pulp flows out the flotation cell body, comprise conventional out of flow procedure or apply the out of flow procedure of ultrasonic energy field.
4. a flotation unit that adopts helical rotor, comprise flotation cell body and floating device, and floating device is located at the lower central area in the flotation cell body, it is characterized in that: be provided with helical rotor in floating device; The ore pulp that becomes a mandarin enters from the helical rotor bottom, in the process of helical duct of flowing through, carries out once above gas-liquid mixed with spiral gas field, and the irreversible outflow of trend stator; Described helical rotor, be provided with hollow rotor shafts in its vertical central area, outer surface at hollow rotor shafts hypomere axle is provided with helical blade, be provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than at helical blade surface, be arranged with stator outside helical blade, be provided with the rotor top cover at the helical blade top, be full of compressed air in the hollow axocoel of hollow rotor shafts; When helical rotor rotated, the compressed air in hollow rotor shafts more outwards sprayed through Stoma of Leaves in the armature spindle pore enters the helical blade abdominal cavity, in helical duct and outer formation spiral gas field.
5. flotation unit as claimed in claim 4, it is characterized in that: described hollow rotor shafts is provided with an above armature spindle pore on the hollow axial wall below the rotor top cover.
6. flotation unit as claimed in claim 4 is characterized in that: described helical blade, be hollow-core construction, and helical blade surface is provided with the Stoma of Leaves that is communicated with hollow rotor shafts more than; The surface that Stoma of Leaves is set is helical blade end face and away from the helical blade end face of hollow rotor shafts; Stoma of Leaves exports up or radial arrangement, forms up or air-flow impulse force radially; Described helical blade, pitch are 20-600mm; Helical blade end face vertical axial diameter projected is 30-600mm.
7. flotation unit as claimed in claim 4, it is characterized in that: described rotor top cover comprises board-like top cover or disked closure at least; Rotor top cover external diameter 〉=stator vertical axial projection internal diameter, rotor top cover internal diameter overlaps with the hollow rotor shafts external diameter.
8. flotation unit as claimed in claim 4 is characterized in that: described spiral gas field comprises at least the organ timbering formula spiral gas field of being located in helical duct and is located at outside helical duct, be i.e. the drum type brake spiral gas field of helical blade end face periphery; Described organ timbering formula spiral gas field is upwards to spray compressed air by an above Stoma of Leaves of row that radially is arranged in the helical duct bottom surface to form at least, and adjacent two row's Stoma of Leaves adopt to misplace and arrange; Described drum type brake spiral gas field is to be formed towards stator radial spray compressed air by an above Stoma of Leaves that is arranged in the helical blade end face at least, and Stoma of Leaves is within the built-in mode of employing is located at the hollow interlayer of helical blade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010129013 CN101804386B (en) | 2010-03-22 | 2010-03-22 | Method and device for flotation by adopting spiral rotor and application |
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| CN 201010129013 CN101804386B (en) | 2010-03-22 | 2010-03-22 | Method and device for flotation by adopting spiral rotor and application |
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| CN101804386A CN101804386A (en) | 2010-08-18 |
| CN101804386B true CN101804386B (en) | 2013-06-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102179313B (en) * | 2010-12-28 | 2013-06-19 | 株洲市兴民科技有限公司 | Single-trough floatation method adopting helical rotor, device and use |
| WO2013020271A1 (en) * | 2011-08-09 | 2013-02-14 | 株洲市兴民科技有限公司 | Flotation method and device for splitting tailings, and use thereof |
| CN102352434A (en) * | 2011-09-28 | 2012-02-15 | 株洲市兴民科技有限公司 | Fluidization leaching method and device adopting spiral rotor and purpose |
| CN109205950A (en) * | 2016-08-16 | 2019-01-15 | 涂瑞强 | A kind of processing system of beneficiation wastewater |
| CN110817294A (en) * | 2019-10-31 | 2020-02-21 | 浙江工业大学 | Conical spiral bubble conveying device and preparation method thereof |
| CN114396383A (en) * | 2022-01-10 | 2022-04-26 | 成都凯天电子股份有限公司 | Oil-gas mixed transportation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1032911A (en) * | 1963-01-22 | 1966-06-15 | Koichi Nakamura | Method and apparatus for flotation |
| CN1024166C (en) * | 1991-01-25 | 1994-04-13 | 中南工业大学 | Flotation machine suitable for flotating rough and heavy granulated ores |
| CN1401434A (en) * | 2001-08-29 | 2003-03-12 | 中国科学院金属研究所 | Tower type grinding flotation machine capable of carrying out grinding while flotation separation |
| CN101195111A (en) * | 2006-12-08 | 2008-06-11 | 李宾 | Ore slurry rotational flow floatation method rotational flow flotation column and flotation unit used thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003901208A0 (en) * | 2003-03-17 | 2003-04-03 | Outokumpu Oyj | A flotation device |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1032911A (en) * | 1963-01-22 | 1966-06-15 | Koichi Nakamura | Method and apparatus for flotation |
| CN1024166C (en) * | 1991-01-25 | 1994-04-13 | 中南工业大学 | Flotation machine suitable for flotating rough and heavy granulated ores |
| CN1401434A (en) * | 2001-08-29 | 2003-03-12 | 中国科学院金属研究所 | Tower type grinding flotation machine capable of carrying out grinding while flotation separation |
| CN101195111A (en) * | 2006-12-08 | 2008-06-11 | 李宾 | Ore slurry rotational flow floatation method rotational flow flotation column and flotation unit used thereof |
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