CN208098360U - A kind of magnetic material dry grinding drum-type dry separation device - Google Patents
A kind of magnetic material dry grinding drum-type dry separation device Download PDFInfo
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- CN208098360U CN208098360U CN201820934429.1U CN201820934429U CN208098360U CN 208098360 U CN208098360 U CN 208098360U CN 201820934429 U CN201820934429 U CN 201820934429U CN 208098360 U CN208098360 U CN 208098360U
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Abstract
The utility model discloses a kind of magnetic material dry grinding drum-type dry separation devices, belong to Ore Dressing Engineering field, device includes dry grinding device, wind magnetic-synchro joins screening device, concentrate collection device and tailing collection device, it includes blowing device that wind magnetic-synchro, which joins screening device, air supply device, concentration equipment and seal casing, concentration equipment includes magnetic separation cylinder and circumference magnetic system, seal casing is arranged in the periphery of magnetic separation cylinder, seal casing includes roughing area, selected area and discharge zone, concentrate collection device is arranged in the lower section of discharge zone, the top in roughing area and selected area is respectively set pipeline and is connected to tailing collection device.The utility model integrates milling and magnetic separation using magnetic material dry grinding and roller dry separation set, and the Dual-Phrase Distribution of Gas olid that dry mill can be made to be discharged is directly entered concentration equipment and carries out roughing, shortens the process flow of iron ore stone mill choosing.
Description
Technical field
The utility model belongs to Ore Dressing Engineering field, and in particular to a kind of magnetic material dry grinding drum-type dry separation dress
It sets.
Background technique
Magnetic separation is a kind of widely used common beneficiation method.For specific susceptibility χ > 3 × 10-3cm3The magnetic material of/g
For matter, the weak magnetic separation equipment of 120~279KA/m of magnetic field strength (1500~3,500 0 e) range can be used（That is weak magnetic separation process）
Recycling.The common resource containing compared with ferromagnetic substance has natural magnetite, maghemite（γ-Fe2O3）, titanomagnetite, magnetic Huang iron
Mine, franklinite [（Zn,Mn）Fe2O4] and roasting magnetic iron ore (including power plant's iron content flyash), steelmaking converter metallurgical slag etc.
Iron charge.
Magnetic material weak magnetic separation process is divided into wet process low intensity magnetic separation and two kinds of dry method low intensity magnetic separation.
Wet process low intensity magnetic separation is prevailing technology of the current processing compared with strongly magnetic material.Technical process generally comprise crushing and screening,
Grind grading, multistage magnetic separation, concentrate concentration, filtering means dehydration, Tailing thickening, conveying, dam（Library）Interior tailing natural subsidence stockpiling, tail
Mine return water such as uses at the links again.The wet process weak magnetic separation process although high iron charge resource of available quality preservation, but from comprising work
Skill process is analyzed, and compared with dry process, there are many deficiencies：
（1）Wet process route is long, and subsequent product increases beneficiation cost and throwing of founding the factory containing concentration, filtering, dehydration link
Rate are used.For drought and water-scarce area, which seems especially prominent.
（2）Wet process can generate secondary pollution, influence groundwater quality；Tailing is stored up in library, and day-to-day operation must leakproof
Water, dam break, in addition to increasing cost, there is also safe and environment-friendly hidden danger；Tailings Dam takes up a large area, and is difficult to realize reclaim after closing library.
（3）The water content of wet magnetic separation concentrate is higher, and at severe cold area, winter, concentrate storage and transportation is difficult, and part is caused to be selected
Factory is forced to stop production, and influences economic benefit.
Dry method weak magnetic separation process commonly used at present, since upper size boundary is up to 150mm, lower limit is generally 3mm（It is i.e. high
The marker size of pressure roller grinding machine）, and the dissociation granularity of iron mineral is mostly 0.15mm (150 μm) hereinafter, therefore dry separation craft is answered more
It gives up for preselecting to throw（Barren rock, country rock）, reduce into mill amount, improve Beneficiation Feed Grade, to achieve the purpose that energy conservation, consumption reduction, synergy.Iron
The procurement criteria for expecting market demands is 60% grade or so, and the concentrate grade of dry cleaning technique is general under state-of-the art
50% or so, rarely has the production instance for reaching qualified concentrate containing.
Although there is above-mentioned shortcoming in dry process, but the product after magnetic separation, without being dehydrated link, Tailings Disposal compares
Simply, conveniently, and meet the environmental protection policy that country advocates, the cost of disposal of product is greatly lowered after magnetic separation.Next is conducive to
Severe cold area winter continuous production, being conducive to drought and water-scarce area reduces beneficiation cost.Therefore dry magnetic separation technique still has
Irreplaceable advantage.
Utility model content
The purpose of the utility model is to provide a kind of magnetic material dry grinding drum-type dry separation devices, to solve wet magnetic separation work
The above problem existing for skill and raising conventional dry magnetic separation process concentrate grade and metal recovery rate.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of magnetic material dry grinding drum-type dry separation device, including dry grinding device, wind magnetic-synchro connection screening device, concentrate are collected
Device and tailing collection device, the wind magnetic-synchro connection screening device includes blowing device, air supply device, concentration equipment and seal closure
Shell, the concentration equipment include magnetic separation cylinder and the circumference magnetic system that is set in magnetic separation cylinder, and the periphery setting of magnetic separation cylinder is close
Sealing cover shell, seal casing successively include roughing area, selected area and discharge zone along the direction of rotation of magnetic separation cylinder, and roughing is arranged in area
Dual-Phrase Distribution of Gas olid ejiction opening with dry grinding device discharge port be connected, in selected the area in setting at least one set blowing device, it is selected
Air supply device is arranged in the external of area, and blowing device is arranged on seal casing and is connected to air supply device, and discharge zone is set to sealing
Pipeline and tail is respectively set in the top in the bottom end of housing, the lower section setting concentrate collection device of discharge zone, roughing area and selected area
The connection of mine collection device.
The circumference magnetic system includes the array magnetic pole worn in the fan-shaped cylinder and sector drum body being set in magnetic separation cylinder,
Magnetic pole is radial to be uniformly arranged on roll surface side of the fan-shaped cylinder close to magnetic separation cylinder, and magnetic pole is radially that positive and negative anodes are handed over
Mistake arrangement is collectively aligned, and is arranged gap between magnetic pole, and magnetic pole in axial direction connects arrangement in the same direction.
The sector that the section of the sector cylinder is, fan-shaped angle are 320-340 °, and fan-shaped axle center is fixedly installed on
In the axle center shaft of magnetic separation cylinder, setting is used for the bottom plate of fixed magnetic pole in sector drum body, bottom plate include magnetic conductive metal sheet and
Non-magnetic bottom plate, magnetic pole is arranged on magnetic conductive metal sheet, and non-magnetic bottom plate is arranged close to the side in axle center in magnetic conductive metal sheet.
The blowing device includes circumference air duct and gas service pipes, and circumference air duct is set to the roll surface of magnetic separation cylinder
Outside is arranged in parallel with roll surface, and several blowing mouths, circumference air duct and gas point is arranged close to the side of roll surface in circumference air duct
One end of piping is connected to, and the other end is connected to form loop with air supply device respectively.
The several gas sealing plates of setting are for separating roughing area, selected area and discharge zone, selected area both ends in the seal casing
Gas sealing plate be flexible gas sealing plate or elastic gas sealing plate.
The Dual-Phrase Distribution of Gas olid ejiction opening is set to the bottom in roughing area, and the section of arrival end is circle, and ejection end is cut
Face is flat slit-shaped；Several intercepters are arranged in the top of Dual-Phrase Distribution of Gas olid ejiction opening, and intercepter one end is fixed with seal casing
Connection, the other end are bent to the direction close to roll surface.
The discharge zone be funnel-form, discharge zone close to roughing area side be arranged discharging brush, the tail portion of discharging brush with it is close
Sealing cover shell is fixedly connected, and brush head is contacted with roll surface.
The air supply device includes air blower and the gas collecting tube that connect with air blower, circumference air duct and gas service pipes point
It is not connected to gas collecting tube.
Grid is set between the circumference air duct and magnetic separation cylinder, and grid includes the magnetic conductive metal net of several fault seam superpositions
Layer.
The technical principle that the utility model uses for：
（1）After magnetic-particle substance is magnetized in magnetic field, can generate has the positively related intensity of magnetization with magnetic source field strength,
That is, the magnetive attraction that magnetic-particle is subject to generates other than magnetic source magnetic field force there is also magnetic adsorptive power between particle
Stronger " magnetic coagulation ", " disk pack is wrapped up in " trend.Magnetisable material has " magnetic hysteresis " characteristic simultaneously, still when it is in " zero strength " area
With certain " remanent magnetism ", but residual magnetization is lower（15-30○e）, " magnetic coagulation ", " disk pack is wrapped up in " between fine magnetic-particle
It is easy to be broken up by external force.
（2）After magnetic material enters magnetic field space, magnetic-particle will receive the magnetic field force of magnetic source, size and magnetic source
Field strength, gradient, magnetic-particle magnetic property（Specific susceptibility）Etc. related；Field strength is high, gradient is big, the high then magnetic of specific susceptibility
Field force is strong.Since magnetic-particle is magnetized in magnetic field, magnetic adsorptive power is certainly existed between particle and mutually adsorbs to form " magnetic group
It is poly- ", magnetic adsorptive power except having outside the Pass with preceding factors, also with the diameter of magnetic-particle, " remanent magnetism " that itself has etc.
It is related；Particle diameter is smaller, and " remanent magnetism " is higher, and the magnetic adsorptive power between particle is just relatively bigger.
（3）Since the specific region in weak magnetic separation equipment style of opening magnetic system has " zero strength " area, by " zero strength "
Area's setting blowing mouth, so that magnetic adsorptive power of the magnetic-particle between magnetic source magnetic field force, particle, magnetic separation drum surface is to particle
Frictional force, under the collective effect of particle gravity itself and system wind-force place air feed power, " the magnetic group between magnetic-particle can be broken
It is poly- ", " disk pack is wrapped up in ", the effect of magnetic adsorptive power, dispels at " positive pressure field of wind-force " between non-magnetic particle is not magnetic field force induced and particle
Air disturbance, particle centrifugal force, particle strategy and system " the negative pressure wind field of force " continuous action enter in wind system, to realize
The separation of magnetic material and non-magnetic material.
（4）To the repeated multiple times experience " reunion "-" breaing up reunion "-of sorting material " rejecting non-magnetic particle "-" reuniting again "-
The process of " breaing up again "-" rejecting again " can greatly improve the sharpness of separation and the efficiency of separation of device.
The utility model having the beneficial effect that compared to the prior art：
1, the utility model integrates milling and magnetic separation, can be made using magnetic material dry grinding and roller dry separation craft
The Dual-Phrase Distribution of Gas olid of dry mill discharge is directly entered concentration equipment and carries out roughing, shortens the technique stream of iron ore stone mill choosing
Journey；
2, it using tailing dry drainage technique, solves the problems, such as that conventional wet technique Tailings Dam can generate secondary pollution, eliminates
Hidden danger existing for safe and environment-friendly aspect, in severe cold area, drought and water-scarce area is applied has irreplaceable advantage；
3, it is horizontal to can reach the same separation index of traditional wet magnetic separation process（Iron concentrate grade reaches 56-65%, metal
The rate of recovery reaches 85-95%）, solve the problems, such as that conventional dry dressing process concentrate grade is low, the rate of recovery is low；
4, the investment cost of project is reduced, and the low economy of production cost is more preferable, there is high promotional value；
5, the utility model uses shorter novel magnetic separation technique, and fine ore dry grinding and dry separation are integrated, reached gradually
Substitute the purpose of ore dressing field wet magnetic separation technique.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is that circumference magnetic system is alternately arranged expanded schematic diagram in the utility model；
Fig. 3 is that circumference magnetic system arranges expanded schematic diagram in the same direction in the utility model；
Appended drawing reference meaning is as follows：1, dry grinding device；2, wind magnetic-synchro joins screening device；3, concentrate collection device；4, tailing
Collection device；5, blowing device；6, air supply device；7, concentration equipment；8, seal casing；9, magnetic separation cylinder；10, circumference magnetic system；
11, roughing area；12, selected area；13, discharge zone；14, Dual-Phrase Distribution of Gas olid ejiction opening；15, fan-shaped cylinder；16, magnetic pole；17,
Gap；18, bottom plate；19, magnetic conductive metal sheet；20, non-magnetic bottom plate；21, circumference air duct；22, gas service pipes；23, it is blown mouth；
24, gas sealing plate；25, intercepter；26, discharging brush；27, air blower；28, gas collecting tube；29, grid；30, roughing adjusts turnover panel；31,
Selected adjusting turnover panel；32, dry mill；33, cloth bag collector；34, exhaust fan.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.
The drum-type dry separation device as shown in Figure 1, a kind of magnetic material is dry grinded, including dry grinding device 1, wind magnetic-synchro connection choose to install
2, concentrate collection device 3 and tailing collection device 4 are set, the wind magnetic-synchro connection screening device 2 includes blowing device 5, air supply device
6, concentration equipment 7 and seal casing 8, the concentration equipment 7 include magnetic separation cylinder 9 and the circumference magnetic being set in magnetic separation cylinder 9
It is 10, seal casing 8 is arranged in the periphery of magnetic separation cylinder 9, and seal casing 8 successively includes roughing along the direction of rotation of magnetic separation cylinder 9
Area 11, selected area 12 and discharge zone 13, the discharge port of the Dual-Phrase Distribution of Gas olid ejiction opening 14 being arranged in roughing area 11 and dry grinding device 1
It is connected, at least one set of blowing device 5 is set in selected area 12, air supply device 6, blowing device 5 is arranged in the external of selected area 12
It is arranged on seal casing 8 and is connected to air supply device 6, discharge zone 13 is set to the bottom end of seal casing 8, the lower section of discharge zone 13
The top in setting concentrate collection device 3, roughing area 11 and selected area 12 is respectively set pipeline and is connected to tailing collection device 4.
As Figure 2-3, the circumference magnetic system 10 includes the fan-shaped cylinder 15 being set in magnetic separation cylinder 9 and fan-shaped cylinder
The array magnetic pole 16 worn in 15, magnetic pole 16 is radial to be uniformly arranged on fan-shaped cylinder 15 close to the roll surface one of magnetic separation cylinder 9
Side, magnetic pole 16 are radially staggered or are collectively aligned for positive and negative anodes, gap 17 are arranged between magnetic pole 16, magnetic pole 16 is along axis
Connect arrangement in the same direction to direction.Circumference magnetic system 10 is made of rare-earth permanent magnet, 10 surface induction intensity 5000- of circumference magnetic system
6000 Oe, the magnetic field strength of 9 roll surface of magnetic separation cylinder reach 2800-3500 Oe, magnetic separation cylinder 9 and magnetic separation region（Magnetic separation cylinder 9
Region except roll surface and within seal casing 8）Between be isolated by non-magnetic magnetic separation cylinder 9.Magnetic pole 16 is arranged as positive and negative anodes friendship
Mistake arrangement is collectively aligned：（1）Magnetic pole positive and negative anodes staggered pattern：On fan-shaped cylinder 15, magnetic pole 16 is along the circumferential direction handed over
Mistake arrangement, and be mounted on magnetic conductive metal sheet 19.（2）The arrangement in the same direction of magnetic pole 16：On fan-shaped cylinder 15, magnetic pole 16 is along circle
Circumferential direction is arranged in the same direction, and is mounted on magnetic conductive metal sheet 19.This arrangement of magnetic system 16, mainly in fan-shaped cylinder 15
The circumferential exterior of interior magnetic system 16 in axial direction on, " zero " region is presented in the middle part of every group of magnetic system 16, and in two adjacent groups magnetic system
" high field intensity " region is presented in 16 middle part.Magnetic material in belt moving process by 16 middle part of every group of magnetic system during, magnetic
Property material enters low field intensity region from high field intensity region, then high field intensity region is entered from low field intensity region again, with magnetic field
The change in direction, the material adsorbed originally by magnetic field carry out once inside out.In material switching process, by being blown into certain speed
Air quantity, the non-magnetic material in magnetic material can be made to be blown out, and enter and form Dual-Phrase Distribution of Gas olid in blowing gas.Gas-solid
When two phase flow passes through grid 29 in flow process, the magnetic material carried secretly in Dual-Phrase Distribution of Gas olid is adsorbed by grid 29, magnetic material
Material enters wind magnetic-synchro connection screening device 2 and carries out magnetic separation again, and Dual-Phrase Distribution of Gas olid is by entering cloth bag collector after grid 29
33 carry out tailing collection.
The sector that the section of the sector cylinder 15 is, fan-shaped angle are 320-340 °, fan-shaped axle center fixed setting
In in the axle center shaft with magnetic separation cylinder 9, setting is used for the bottom plate 18 of fixed magnetic pole 16 in fan-shaped cylinder 15, and bottom plate 18 includes leading
Magnetic pole 16, side of the magnetic conductive metal sheet 19 close to axle center are arranged on magnetic conductive metal sheet 19 for magnetic metal plate 19 and non-magnetic bottom plate 20
Non-magnetic bottom plate 20 is set.The fan angle setting of fan-shaped cylinder 15 is in order to avoid entire 9 circumferential zones of magnetic separation cylinder all bands
It being magnetic, the nonmagnetic region of magnetic material discharging can not be arranged in the roll surface of magnetic separation cylinder 9, and cause device to be unable to continuous production,
Therefore must be arranged in magnetic separation cylinder certain length without magnetic area.
The blowing device 5 includes circumference air duct 21 and gas service pipes 22, and circumference air duct 21 is set to magnetic separation circle
It on the outside of the roll surface of cylinder 9, is arranged in parallel with roll surface, several blowing mouths 23, circumference is arranged close to the side of roll surface in circumference air duct 21
Air duct 21 is connected to one end of gas service pipes 22, and the other end is connected to form loop with air supply device 6 respectively.Selected
" zero strength " region setting circumference air duct 21 and blowing mouth 23 of the area 12 apart from 9 outer surface 5-8mm of magnetic separation cylinder, can make to justify
Air with pressure blows to " zero strength " region of the roll surface bed of material of magnetic separation cylinder 9 along blowing mouth 23 in all air ducts 21.When material into
After entering magnetic field, magnetic coagulation is generated under magnetic fields, but can weaken significantly by magnetic coagulation trend when " zero strength " region, sprayed
Under the action of blowing air, major part non-magnetic material therein is blown out, to realize point of magnetic material and non-magnetic material
From.
The several gas sealing plates 24 of setting are for separating roughing area 11, selected area 12 and discharge zone 13 in the seal casing 8, essence
The gas sealing plate 24 at 12 both ends of constituency is flexible gas sealing plate or elastic gas sealing plate.Rough concentrate air-flow when selected area 12 is selected is set not go here and there
Enter to more hypobaric roughing area 11.
The Dual-Phrase Distribution of Gas olid ejiction opening 14 is set to the bottom in roughing area 11, and the section of arrival end is circle, ejection end
Section be flat slit-shaped；The top of Dual-Phrase Distribution of Gas olid ejiction opening 14 is arranged several intercepters 25,25 one end of intercepter with it is close
Sealing cover shell 8 is fixedly connected, and the other end is bent to the direction close to roll surface.Dual-Phrase Distribution of Gas olid ejiction opening 14 is arranged in magnetic separation cylinder
9 middle and lower part can effectively extend magnetic separation zone length, improve the yield of wind magnetic-synchro connection screening device 2.
It is in flat narrow slit structure that the ejection end of Dual-Phrase Distribution of Gas olid ejiction opening 14, which uses, and raw material Dual-Phrase Distribution of Gas olid can be made to enter
Vertical 9 roll surface of magnetic separation cylinder of width direction behind roughing area 11 along 9 roll surface of magnetic separation cylinder sprays, and improves the equal of the sorting of roughing area 11
Even property；Intercepter 25 can make Dual-Phrase Distribution of Gas olid after entering roughing area 11 using to the curved streamline shape of 9 roll surface of magnetic separation cylinder
The roll surface of magnetic separation cylinder 9 is repeatedly flowed to obliquely, and under the influence of a magnetic field, most of magnetic material is adsorbed in Dual-Phrase Distribution of Gas olid
To 9 roll surface of magnetic separation cylinder, non-magnetic material continues to flow with air-flow in Dual-Phrase Distribution of Gas olid due to not magnetic field force induced effect,
Improve the efficiency of separation in roughing area 11.
The discharge zone 12 is funnel-form, and discharging brush 26, discharging brush 26 is arranged close to the side in roughing area 11 in discharge zone 12
Tail portion be fixedly connected with seal casing 8, brush head is contacted with roll surface.
The air supply device 6 includes air blower 27 and the gas collecting tube 28 connecting with air blower 27, and circumference air duct 21 is gentle
Body distribution pipe 22 is connected to gas collecting tube 28 respectively.
Grid 29 is set between the circumference air duct 21 and magnetic separation cylinder 9, and grid 29 includes leading for number fault seam superposition
Magnetic metal net layer.The subparticle that carrying is fluidized in material air is blown during flowing through grid 29, due to magnetic conductive metal stratum reticulare
Staggered floor arrangement, increases the perturbation action of Dual-Phrase Distribution of Gas olid, and extend solid particle therein in magnetic system control range
Residence time forms thicker magnetic-particle, and under the influence of a magnetic field to enhance the trend that fine magnetic-particle adheres to each other
It is adsorbed onto the roll surface of magnetic separation cylinder 9.
Roughing is respectively set in the pipeline that the roughing area 11 and selected area 12 are connected to tailing collection device 4 and adjusts turnover panel
30 and selected adjusting turnover panel 31.Roughing area 11 and selected area 12 are used in conjunction with a set of tailing collection device 4, and roughing adjusts turnover panel 30
With selected adjusting turnover panel 31 can stream pressure to roughing area 11 and selected area 12 and flow be adjusted.
Job step is as follows：
1, magnetic material is added from the feed(raw material)inlet of the dry mill 32 of dry grinding device 1, material is in dry mill
Levigate in 32, granularity is extracted out in 27 slave of air blower for the fine powder that 200 mesh account for 90% or more with air-flow；
2, the raw material Dual-Phrase Distribution of Gas olid extracted out is injected to the thick of wind magnetic-synchro connection screening device 2 through Dual-Phrase Distribution of Gas olid ejiction opening 14
Constituency 11, raw material Dual-Phrase Distribution of Gas olid are repeatedly flowing to magnetic separation in the case where the multistage intercepter 25 in roughing area 11 is acted on circumference magnetic system 10
In 9 surface process of cylinder, wherein magnetic material becomes coarse-fine by the roll surface that the magnetic field of circumference magnetic system 10 is adsorbed on magnetic separation cylinder 9
Mine, and the selected area 12 that wind magnetic-synchro joins screening device 2 is rotated into magnetic separation cylinder 9；
3, non-magnetic material is in air-flow flow process in Dual-Phrase Distribution of Gas olid, the cloth bag in tailing collection device 4
Tailing is drained under the action of collector 33 and exhaust fan 34 from the pipeline that roughing area 11 is connected to tailing collection device 4 and collects dress
4 are set, magnetic material accounts for 75% or so of total tailing amount in the tailing amount that roughing area 11 is discharged；
4, when rough concentrate is rotated into " zero strength " region of 12 first groups of selected area magnetic pole 16 with magnetic separation cylinder 9, pass through
Gas is passed through the gas service pipes 22 and circumference air feed for entering blowing device 5 after gas collecting tube 28 by the air blower 27 of air supply device 6
In pipe 21, and the air that blowing wind speed is 30-40m/s from blowing mouth 23 to surface of material, it can will be mixed in magnetic coagulation material
Part non-magnetic particle blow out charge level, and taken away with air-flow；Material continuation is continued to rotate with magnetic separation cylinder 9 into second group of magnetic
Pole 16 obtains selected again；Material can be such that magnetic material therein is enriched with step by step by the connection choosing of multiple wind magnetic, output essence
Mine；It 5 settable 2 groups of blowing device, is shunted by gas collecting tube 28 in symmetrical expansion shape, 1/2 region in selected area 12 is carried out respectively
It is blown operation；
5, concentrate is after magnetic separation cylinder 9 transports circumference magnetic system 10, and by brushing for discharging brush 26, concentrate is from magnetic separation cylinder 9
Surface is unloaded, and is stored into concentrate collection device 3；
6, when overflowing the bed of material into the blows air of the 9 roll surface bed of material of magnetic separation cylinder, a large amount of subparticle shape materials can be carried,
With air during flowing through grid 29, the fine magnetic-particle of wherein most mutually can adsorb to be formed fluidised subparticle
More coarse grained magnetic material, magnetism material can be fettered again by circumference magnetic system 10；
7,29 space of grid between blowing mouth 23 two neighboring in selected area 12 be relatively isolated as lower part zone of positive pressure and
Top negative pressuren zone, the air blown out from blowing mouth 23 enters after the zone of positive pressure of lower part to be contacted with material, and material non magnetic in material is blown
Dual-Phrase Distribution of Gas olid is formed after out, Dual-Phrase Distribution of Gas olid passes through grid 29 again and enters top negative pressuren zone, and in the negative of tailing collection device 4
Tailing collection device 4 is drained into from the pipeline that selected area 12 is connected to tailing collection device 4 under pressure effect, magnetic material is selected
The tailing amount of area's discharge accounts for 20% or so of total tailing amount, grid using the non-magnetic metal mesh fissure of displacement superposition of diameter 1mm or so and
At aperture 1-2mm, grid interlamellar spacing 1-2mm, grid lower surface is apart from material outer surface 5-8mm；
8, the mine tailing that roughing area 11 and selected area 12 generate is collected by cloth bag collector 33, the cleaning of discharge
Air discharges after exhaust fan pressurizes.
Claims (9)
- The drum-type dry separation device 1. a kind of magnetic material is dry grinded, it is characterised in that：Including device of dry grinding（1）, wind magnetic-synchro connection choosing Device（2）, concentrate collection device（3）With tailing collection device（4）, the wind magnetic-synchro connection screening device（2）Including blowing device （5）, air supply device（6）, concentration equipment（7）And seal casing（8）, the concentration equipment（7）Including magnetic separation cylinder（9）And setting In magnetic separation cylinder（9）Interior circumference magnetic system（10）, magnetic separation cylinder（9）Periphery be arranged seal casing（8）, seal casing（8）Edge Magnetic separation cylinder（9）Direction of rotation successively include roughing area（11）, selected area（12）And discharge zone（13）, roughing area（11）On set The Dual-Phrase Distribution of Gas olid ejiction opening set（14）With dry grinding device（1）Discharge port be connected, selected area（12）Interior setting is at least one set of Blowing device（5）, selected area（12）External air supply device is set（6）, blowing device（5）It is arranged in seal casing（8）It is upper with Air supply device（6）Connection, discharge zone（13）It is set to seal casing（8）Bottom end, discharge zone（13）Lower section setting concentrate receive Acquisition means（3）, roughing area（11）With selected area（12）Top pipeline and tailing collection device is respectively set（4）Connection.
- The drum-type dry separation device 2. magnetic material as described in claim 1 is dry grinded, it is characterised in that：The circumference magnetic system（10） Including being set to magnetic separation cylinder（9）Interior fan-shaped cylinder（15）With fan-shaped cylinder（15）The array magnetic pole inside worn（16）, magnetic pole （16）It is radial to be uniformly arranged on fan-shaped cylinder（15）Close to magnetic separation cylinder（9）Roll surface side, magnetic pole（16）Radially side To being staggered or be collectively aligned for positive and negative anodes, magnetic pole（16）Between gap is set（17）, magnetic pole（16）In axial direction in the same direction Connect arrangement.
- The drum-type dry separation device 3. magnetic material as claimed in claim 2 is dry grinded, it is characterised in that：The sector cylinder（15） The section sector that is, fan-shaped angle is 320-340 °, and fan-shaped axle center is fixedly installed on and magnetic separation cylinder（9）Axle center turn In axis, fan-shaped cylinder（15）Interior setting is used for fixed magnetic pole（16）Bottom plate（18）, bottom plate（18）Including magnetic conductive metal sheet（19） With non-magnetic bottom plate（20）, magnetic conductive metal sheet（19）Upper setting magnetic pole（16）, magnetic conductive metal sheet（19）Side close to axle center is set Set non-magnetic bottom plate（20）.
- The drum-type dry separation device 4. magnetic material as claimed in claim 3 is dry grinded, it is characterised in that：The blowing device（5） Including circumference air duct（21）And gas service pipes（22）, circumference air duct（21）It is set to magnetic separation cylinder（9）Roll surface on the outside of, It is arranged in parallel with roll surface, circumference air duct（21）Close to the side of roll surface, several blowing mouths are set（23）, circumference air duct（21） And gas service pipes（22）One end connection, the other end respectively with air supply device（6）Connection forms loop.
- The drum-type dry separation device 5. magnetic material as claimed in claim 4 is dry grinded, it is characterised in that：The seal casing（8） The interior several gas sealing plates of setting（24）For separating roughing area（11）, selected area（12）And discharge zone（13）, selected area（12）Both ends Gas sealing plate（24）For flexible gas sealing plate or elastic gas sealing plate.
- The drum-type dry separation device 6. magnetic material as claimed in claim 5 is dry grinded, it is characterised in that：The Dual-Phrase Distribution of Gas olid spray Outlet（14）It is set to roughing area（11）Bottom, the section of arrival end is circle, and the section of ejection end is flat slit-shaped；Gas Fixed double phase flow ejiction opening（14）Top several intercepters are set（25）, intercepter（25）One end and seal casing（8）It is fixed to connect It connects, the other end is bent to the direction close to roll surface.
- The drum-type dry separation device 7. magnetic material as claimed in claim 6 is dry grinded, it is characterised in that：The discharge zone（13）For Funnel-form, discharge zone（13）Close to roughing area（11）Side be arranged discharging brush（26）, discharging brush（26）Tail portion and seal closure Shell（8）It is fixedly connected, brush head is contacted with roll surface.
- The drum-type dry separation device 8. magnetic material as claimed in claim 7 is dry grinded, it is characterised in that：The air supply device（6） Including air blower（27）With with air blower（27）The gas collecting tube of connection（28）, circumference air duct（21）And gas service pipes（22）Point Not and gas collecting tube（28）Connection.
- The drum-type dry separation device 9. magnetic material as claimed in claim 8 is dry grinded, it is characterised in that：The circumference air duct （21）With magnetic separation cylinder（9）Between grid is set（29）, grid（29）Magnetic conductive metal stratum reticulare including the seam superposition of several faults.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820934429.1U CN208098360U (en) | 2018-06-15 | 2018-06-15 | A kind of magnetic material dry grinding drum-type dry separation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820934429.1U CN208098360U (en) | 2018-06-15 | 2018-06-15 | A kind of magnetic material dry grinding drum-type dry separation device |
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| CN208098360U true CN208098360U (en) | 2018-11-16 |
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| CN201820934429.1U Expired - Fee Related CN208098360U (en) | 2018-06-15 | 2018-06-15 | A kind of magnetic material dry grinding drum-type dry separation device |
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| CN (1) | CN208098360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722664A (en) * | 2018-06-15 | 2018-11-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of magnetic material dry grinding drum-type dry separation device |
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2018
- 2018-06-15 CN CN201820934429.1U patent/CN208098360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722664A (en) * | 2018-06-15 | 2018-11-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of magnetic material dry grinding drum-type dry separation device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181116 Termination date: 20210615 |