CN108057518A - A kind of magnetic material horizontal wind magnetic-synchro connection screening device and method - Google Patents
A kind of magnetic material horizontal wind magnetic-synchro connection screening device and method Download PDFInfo
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- CN108057518A CN108057518A CN201711218770.3A CN201711218770A CN108057518A CN 108057518 A CN108057518 A CN 108057518A CN 201711218770 A CN201711218770 A CN 201711218770A CN 108057518 A CN108057518 A CN 108057518A
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- 239000000696 magnetic material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012216 screening Methods 0.000 title claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 155
- 239000000463 material Substances 0.000 claims abstract description 59
- 239000008187 granular material Substances 0.000 claims abstract description 41
- 239000006249 magnetic particle Substances 0.000 claims abstract description 37
- 239000012141 concentrate Substances 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000007790 scraping Methods 0.000 claims abstract description 12
- 238000005345 coagulation Methods 0.000 claims description 14
- 230000015271 coagulation Effects 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- 229910052742 iron Inorganic materials 0.000 description 11
- 238000007885 magnetic separation Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- 230000000274 adsorptive effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
Abstract
The invention discloses a kind of magnetic material horizontal wind magnetic-synchro connection screening device and methods, the device mainly includes rack, drive pulley, discharging belt pulley, belt, material scraping plate, concentrate store, magnetic system, granular material feed hopper, collecting hood, cloth bag collector, tailing bin, air accumulator, exhaust fan, blowback air compressor machine, exhaust emission pipe, blower and air blower, in the magnetic field generated in multigroup magnet of magnetic system, treat the process of the repeated multiple times experience " reunion " " breaing up reunion " " rejecting non-magnetic particle " " reuniting again " " breaing up again " " rejecting again " of sorting material, the concentrate grade and metal recovery rate finally obtained is high, tailing dry is arranged, solve the problems, such as that conventional wet technique Tailings Dam can generate secondary pollution, eliminate safety, hidden danger existing for environmentally friendly aspect；Technological process is short, number of devices is few, and investment cost of founding the factory is low, is applied in severe cold area, drought and water-scarce area with irreplaceable advantage, has high promotional value.
Description
Technical field
The invention belongs to Ore Dressing Engineering fields, and in particular to a kind of magnetic material horizontal wind magnetic-synchro joins screening device
And method.
Background technology
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 magnetic field intensity 120-279KA/m (zero e of 1500-3500) scope can be used（That is weak magnetic separation process）It returns
It receives.The common resource containing compared with ferromagnetic substance has natural magnetite, maghemite（γ-Fe2O3）, titanomagnetite, magnetic iron ore,
Franklinite [（Zn,Mn）Fe2O4] and roasting magnetic iron ore (including power plant's iron content flyash), the iron such as steelmaking converter metallurgical slag
Material.
Magnetic material weak magnetic separation process is divided into two kinds of wet method low intensity magnetic separation and dry method low intensity magnetic separation.Wet method low intensity magnetic separation is to handle at present
Compared with the prevailing technology of strongly magnetic material.Technical process generally comprises crushing and screening, grind grading, multistage magnetic separation, concentrate concentration, mistake
Filter dehydration, Tailing thickening, conveying, dam（Storehouse）The links such as interior tailing natural subsidence is stored up, and tailings recycling water is used again.Wet method low intensity magnetic separation work
Although skill can obtain the high iron charge resource of quality preservation, from comprising technical process analyze, compared with dry process, deposit
In many deficiencies：（1）Wet process route is long, and subsequent product adds beneficiation cost and build containing concentration, filtering, dehydration link
Factory's investment cost.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 storehouse, and day-to-day operation palpus preventing water leakage, dam break, in addition to cost is increased, also there are safety, rings
Protect hidden danger；Tailings Dam takes up a large area, and is difficult to realize reclaim after closing storehouse.（3）The water content of wet magnetic separation concentrate is higher, in severe cold
Area, concentrate accumulating is difficult during winter, and the portion separating plant of causing 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 be mostly 0.15mm (150 μm) below, therefore dry separation craft mostly should
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 saving, consumption reduction, synergy.Iron
The procurement criteria of market demands is expected for 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.
The content of the invention
The purpose of the present invention is to solve technical problems in the prior art, provide a kind of concentrate grade and metal
The rate of recovery is high, cost is relatively low, environment friendly and pollution-free magnetic material horizontal wind magnetic-synchro connection screening device.
Another object of the present invention is to provide for a kind of magnetic material horizontal wind magnetic-synchro connection choosing method.
In order to achieve the above object, the present invention uses following technical scheme：A kind of magnetic material horizontal wind magnetic-synchro connection
Screening device, including rack and the drive pulley being arranged in rack and discharging belt pulley, the one side of the discharging belt pulley
Lower section equipped with material scraping plate and material scraping plate is equipped with concentrate store, and the drive pulley is connected with discharging belt pulley by belt, institute
The lower section for stating belt bearing material section is equipped with the magnetic system for including multigroup magnet, and the top of the belt bearing material section is fed equipped with granular material
Bucket is set with collecting hood and granular material feed hopper close to one end of drive pulley, and cloth bag is connected at the top of the collecting hood
Tailing bin is equipped with below collector and cloth bag collector discharge port, the cloth bag collector is connected with air accumulator and exhaust fan, institute
It states air accumulator and is connected with blowback air compressor machine, the exhaust fan is connected with exhaust emission pipe, and the lower section of the collecting hood is equipped with more
Multiple blowing mouths are evenly equipped on a blower and blower, one end of the blower is connected with air blower.
Further, the magnetic system is arranged on the reciprocal trolley of magnetic system, and the reciprocal trolley of magnetic system is located in rack and magnetic
It is that reciprocating mechanism is connected on reciprocal trolley, the reciprocal trolley of magnetic system is connected by synchronising (connecting) rod with blower, described
Blower is connected by connection flexible pipe with air blower.
Further, the magnetic system includes non-magnetic bottom plate, and the non-magnetic bottom plate is equipped with magnetic system and fixes magnetic conductive steel plate,
The magnetic system, which is fixed in magnetic conductive steel plate, to be equipped with the outside of multigroup magnet and multigroup magnet and is equipped with non-magnetic stainless steel cage, it is described not
The top of magnetic stainless steel cover is equipped with multiple non-magnetic stainless steel bars.
Further, multigroup magnet poles in the magnetic system are staggered or set in the same direction.
Further, the granular material feed hopper is equipped with vibrating distributor.
Further, the reciprocating mechanism is the toggle being fixed in rack.
Further, the bottom of the collecting hood is equipped with rubber apron, and the collecting hood inner wall is equipped with deflector.
Further, the grid that thickness is 20mm, aperture is 1-2mm is equipped between the blower, the grid is by more
The non-magnetic metal mesh fissure of displacement of layer is formed by stacking and the spacing of the non-magnetic metal mesh of adjacent two layers is 1-2mm, the grid lower surface
Upper surface 8-11mm apart from belt bearing material section.
Further, the bottom of the belt bearing material section is set there are two belt roller, is set at the top of the endless belt section
There are two Belt Conveying support wheels and Belt Conveying support wheel to be fixed in rack.
A kind of magnetic material horizontal wind magnetic-synchro joins choosing method, and this method comprises the following steps：
A, by granularity be 0-1mm granular material from granular material feed hopper addition after, granular material under the action of distributing device,
It is evenly laid out on horizontal belt according to 3-5mm thickness；
B, after granular material is with belt movement and the field region of entrance magnetic system, the magnetic-particle in granular material is in magnetic field force
By first group of magnet adsorption in magnetic system under effect, the magnetic-particle adsorbed generates magnetic coagulation phenomenon and is mingled with non magnetic
Grain；
C, when granular material is moved horizontally to " zero strength " region in magnetic field with belt, by the blowing mouth on blower toward material
The air that surface injection wind speed is 30-40m/s, the part non-magnetic particle blowout charge level that will be mixed in magnetic coagulation material, and
It is collected after being taken away with air-flow by collecting hood；
D, material continues to move to the field region into second group of magnet with belt afterwards, obtains again selected；By multiple wind
Magnetic connection choosing, can be such that magnetic material therein is enriched with step by step, output concentrate；
E, concentrate is after belt transports the field region of magnetic system, during by discharging belt pulley, is scraped by material scraping plate from belt, into
Enter concentrate store to be stored；
F, the bed of material is overflowed by the air of blowing mouth injection into the bed of material on blower and carries a large amount of subparticle shape materials,
With air during grid is flowed through, the fine magnetic-particle of major part therein mutually can adsorb to be formed fluidised subparticle
More coarse grained magnetic material, sinks and is fettered again by magnetic system；
G, the positive pressure Dual-Phrase Distribution of Gas olid discharged from grid enters negative pressuren zone, flows through cloth bag collector, collects mine tailing, discharge it is clean
Net air is discharged after exhaust fan pressurizes.
The present invention technical principle be：（1）After magnetic-particle substance is magnetized in magnetic field, it can generate and have with magnetic source field strength
Have the positively related intensity of magnetization, that is to say, that the magnetive attraction that magnetic-particle is subject in addition to magnetic source magnetic field force, also there are particle it
Between magnetic adsorptive power and generate stronger " magnetic coagulation ", " disk pack is wrapped up in " trend.Magnetisable material has " magnetic hysteresis " characteristic simultaneously, when it
Still there is certain " remanent magnetism " during in " zero strength " area, but residual magnetization is relatively low（15-30○e）, between fine magnetic-particle
" magnetic coagulation ", " disk pack is wrapped up in " be easy to be broken up by external force.（2）After magnetic material enters magnetic field space, magnetic-particle can be by
To the magnetic field force of magnetic source, the field strength of size and magnetic source, gradient, the magnetic property of magnetic-particle（Specific susceptibility）Etc. related；
Field strength is high, gradient is big, the high then magnetic field force of specific susceptibility is strong.Since magnetic-particle is magnetized in magnetic field, necessarily deposited between particle
It mutually adsorbing to be formed " magnetic coagulation " in magnetic adsorptive power, magnetic adsorptive power is removed to be had outside the Pass with preceding factors, and also and magnetic-particle
Diameter, " remanent magnetism " that itself has etc. it is related；Particle diameter is smaller, and " remanent magnetism " is higher, the magnetic suction between particle
Attached power is just relatively bigger.（3）Due to there is " zero strength " area in the specific region of opening magnetic system, by being set in " zero strength " area
Put blower so that magnetic adsorptive power of the magnetic-particle between magnetic source magnetic field force, particle, the frictional force to particle, particle sheet
Under the collective effect of body gravity and supplied wind-force, " magnetic coagulation ", " disk pack is wrapped up in " between magnetic-particle can be broken, non-magnetic particle is not
The effect of magnetic adsorptive power between magnetic field force induced and particle dispels holding for air disturbance and " the negative pressure wind field of force " at " positive pressure field of wind-force "
Under continuous effect gravity is overcome to enter in wind system, so as to fulfill the separation of magnetic material and non-magnetic material.（4）Treat sorting material
The mistake of repeated multiple times experience " reunion "-" breaing up reunion "-" rejecting non-magnetic particle "-" reuniting again "-" breaing up again "-" rejecting again "
Journey can greatly improve the sharpness of separation and the efficiency of separation of unit.
The present invention has the advantages that compared with the prior art：The magnetic material horizontal wind magnetic-synchro connection choosing of the present invention
Device mainly includes rack, drive pulley, discharging belt pulley, belt, material scraping plate, concentrate store, magnetic system, granular material feed
Bucket, collecting hood, cloth bag collector, tailing bin, air accumulator, exhaust fan, blowback air compressor machine, exhaust emission pipe, blower and drum
Wind turbine by setting magnetic system, makes belt surface specific region " zero strength " occur（Each side's magnetive attraction suffered by magnetic-particle is made a concerted effort
It is zero）.After the magnetic-particle in material generates magnetic coagulation in magnetic field, when entering " zero strength " region, pass through wind-force
Disturbance, can break in material " magnetic coagulation ", reduce being mingled with for non-magnetic particle；In the magnetic field generated in multigroup magnet of magnetic system, treat
Repeated multiple times experience " reunion "-" breaing up reunion "-" rejecting non-magnetic particle "-" reuniting again "-" the breaing up again " of sorting material-" again
The process of rejecting ", the final selected enrichment for realizing magnetic material, the concentrate grade finally obtained and metal recovery rate are high, iron essence
Ore deposit grade can reach 59-65%, and metal recovery rate can reach 85-95%；Tailing dry is arranged, and solves conventional wet technique Tailings Dam meeting
Secondary pollution is led to the problem of, eliminates hidden danger existing for safe and environment-friendly aspect；Technological process is short, number of devices is few, throwing of founding the factory
For rate with low, being applied in severe cold area, drought and water-scarce area has irreplaceable advantage, and good economy performance has high push away
Wide value.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the process flow chart of the present invention；
Fig. 3 is that multigroup magnet poles in magnetic system of the present invention are staggered schematic diagram；
Fig. 4 is the top view of multigroup magnet in Fig. 3；
Fig. 5 is that multigroup magnet poles in magnetic system of the present invention set schematic diagram in the same direction；
Fig. 6 is the top view of multigroup magnet in Fig. 5.
Reference numeral meaning of the present invention is as follows：1st, rack；2nd, drive pulley；3rd, discharging belt pulley；4th, material scraping plate；5th, it is smart
Ore storage bin；6th, belt；7th, magnetic system；8th, granular material feed hopper；9th, collecting hood；10th, cloth bag collector；11st, tailing bin；12nd, gas storage
Tank；13rd, exhaust fan；14th, blowback air compressor machine；15th, exhaust emission pipe；16th, blower；17th, blowing mouth；18th, air blower；19、
The reciprocal trolley of magnetic system；20th, reciprocating mechanism；21st, synchronising (connecting) rod；22nd, connection flexible pipe；23rd, non-magnetic bottom plate；24th, magnetic system is solid
Determine magnetic conductive steel plate；25th, non-magnetic stainless steel cage；26th, non-magnetic stainless steel bar；27th, vibrating distributor；28th, rubber apron；29、
Deflector；30th, grid；31st, belt roller；32nd, Belt Conveying support wheel.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of magnetic material horizontal wind magnetic-synchro connection screening device, including rack 1 and is arranged on rack 1
On drive pulley 2 and discharging belt pulley 3, the one side of discharging belt pulley 3 is equipped with material scraping plate 4 and the lower section of material scraping plate 4 is equipped with
Concentrate store 5, drive pulley 2 and discharging belt pulley 3 are connected by belt 6, and the bottom of 6 bearing material section of belt sets that there are two belt supports
Roller 31, sets that there are two Belt Conveying support wheels 32 and Belt Conveying support wheel 32 to be fixed on rack 1 at the top of 6 circulation section of belt
On, the lower section of 6 bearing material section of belt is equipped with the magnetic system 7 comprising multigroup magnet, and 7 Surface field intensity of magnetic system is 7000-8000 Oe,
6 bearing material section upper surface magnetic field intensity of belt is 2800-3500 Oe, and magnetic system 7 includes non-magnetic bottom plate 23, on non-magnetic bottom plate 23
Magnetic conductive steel plate 24 is fixed equipped with magnetic system, multigroup magnet is installed in magnetic system fixation magnetic conductive steel plate 24 and the outside of multigroup magnet is equipped with
Non-magnetic stainless steel cage 25, the top of non-magnetic stainless steel cage 25 are equipped with multiple non-magnetic stainless steel bars 26, and magnetic system 7 is arranged on magnetic
It is on reciprocal trolley 19, the reciprocal trolley 19 of magnetic system is located in rack 1 and is connected with reciprocating mechanism on the reciprocal trolley 19 of magnetic system
20, reciprocating mechanism 20 is to be fixed on toggle in rack 1, and the reciprocal trolley 19 of magnetic system is along 6 direction of motion of belt
Reciprocally swinging, the swinging distance of the reciprocal trolley 19 of magnetic system are the 1-2 integral multiples of two neighboring magnet spacing, swing period 1-
2s.The top of 6 bearing material section of belt is equipped with granular material feed hopper 8 and collecting hood 9 and granular material feed hopper 8 is close to drive pulley
One end of wheel 2 is set, and granular material feed hopper 8 is equipped with vibrating distributor 27, and the bottom of collecting hood 9 is surrounded by caulking gum
Apron 28, Dual-Phrase Distribution of Gas olid vacuum cavitations are 0-10Pa in collecting hood 9, can prevent that barotropic field dusty gas is excessive, collecting hood 9
Inner wall is equipped with deflector 29, and the top of collecting hood 9, which is connected with below cloth bag collector 10 and 10 discharge port of cloth bag collector, to be set
There is tailing bin 11, cloth bag collector 10 is connected with air accumulator 12 and exhaust fan 13, and air accumulator 12 is connected with blowback air compressor machine 14, takes out
Wind turbine 13 is connected with exhaust emission pipe 15, and the lower section of collecting hood 9 is equipped with the multiple blowers being of same size of width and belt 6
16 and blower 16 on be evenly equipped with multiple blowing mouths 17, blower 16 is connected by connection flexible pipe 22 with air blower 18, blower
The grid 30 that thickness is 20mm, aperture is 1-2mm is equipped between 16, grid 30 is formed by stacking by the non-magnetic metal mesh fissure of displacement of multilayer
And the spacing of the non-magnetic metal mesh of adjacent two layers is 1-2mm, upper surface 8- of 30 lower surface of grid apart from 6 bearing material section of belt
11mm blows the subparticle that carrying is fluidized in material air during grid 30 is flowed through, due to the staggered floor cloth of non-magnetic metal mesh
When putting, increase the perturbation action of Dual-Phrase Distribution of Gas olid, and extending stop of the solid particle therein in 7 control range of magnetic system
Between, to enhance the trend that fine magnetic-particle adheres to each other, thicker magnetic-particle is formed, and in the effect of magnetic field force and gravity
Sinking falls on 6 surface of belt.Blower 16 is connected by the trolley 19 reciprocal with magnetic system of synchronising (connecting) rod 21, and magnetic system can be made back and forth small
Vehicle 19 is along blower 16 during 6 length direction reciprocally swinging of belt also synchronous hunting therewith, so that " zero strength " region
It is relatively fixed with 17 position of blowing mouth, keeps synchronous, material sorting is realized with minimum air quantity, and the sorting effect of material can be improved
Rate.
As seen in figures 3-6, multigroup magnet poles in magnetic system 7 are provided with two ways, and one kind is that multigroup magnet poles are handed over
Mistake is set：Magnetic pole is alternately arranged along 6 direction of motion of belt；Another kind is that multigroup magnet poles are set in the same direction：Magnetic pole is transported along belt 6
Dynamic direction is arranged in the same direction.
Embodiment 1
Granular material selects magnetizing roast ore deposit, and Iron grade 39-41%, FeO content 16-17%, -300 mesh 90% of granularity, moisture content contains
Amount less than 6%.It selects, comprises the following steps as shown in Fig. 2, joining to the granular material into sector-style magnetic-synchro：
A, by granular material after granular material feed hopper 8 adds in, granular material is thick according to 5mm under the action of distributing device 27
Spend evenly laid out on horizontal belt 6, the control of 6 speed of service of belt is 0.4-0.5m/s, and the swing period of magnetic system 7 is 1s, pendulum
Dynamic amplitude 100mm, 6 bearing material section upper surface magnetic field intensity of belt are 2800 Oe.
B, granular material with belt 6 move and into magnetic system 7 field region after, the magnetic-particle in granular material exists
By first group of magnet adsorption in magnetic system 7 under magnetic field force effect, the magnetic-particle adsorbed generates magnetic coagulation phenomenon and is mingled with non-
Magnetic-particle.
C, when granular material is moved horizontally to " zero strength " region in magnetic field with belt 6, the blowing on blower 16 is passed through
The air that mouth 17 is 30m/s toward surface of material injection wind speed, the part non-magnetic particle blowout that will be mixed in magnetic coagulation material
Charge level, and be collected after being taken away with air-flow by collecting hood 9.
D, material continues to move to the field region into second group of magnet with belt 6 afterwards, obtains again selected；Through excessive
Secondary wind magnetic connection choosing, can be such that magnetic material therein is enriched with step by step, output concentrate.
E, concentrate is after belt 6 transports the field region of magnetic system, during by discharging belt pulley 3, by material scraping plate 4 from belt 6
On scrape, stored into concentrate store 5.
F, the bed of material is overflowed by the air of the injection of blowing mouth 17 into the bed of material on blower 16 and carried fine a large amount of
Granular material, fluidised subparticle with air during grid 30 is flowed through, the fine magnetic-particle meeting of major part therein
Mutually absorption forms more coarse grained magnetic material, sinks and is fettered again by magnetic system 7.
G, the positive pressure Dual-Phrase Distribution of Gas olid discharged from grid 30 enters negative pressuren zone, flows through cloth bag collector 10, collects mine tailing,
The pure air of discharge discharges after the pressurization of exhaust fan 13.
As a result：Magnetizing roast ore deposit selects the sorting of technique by wind magnetic-synchro connection, and iron concentrate grade reaches 59-61%, metal returns
Yield reaches 85-86%.
Embodiment 2
Granular material selects natural magnetite, Iron grade 37-38%, FeO content 21-22%, and particle size range accounts for 90% for -300 mesh
More than, water content is below 6%.It selects, comprises the following steps as shown in Fig. 2, joining to the granular material into sector-style magnetic-synchro：
A, by granular material after granular material feed hopper 8 adds in, granular material is thick according to 3mm under the action of distributing device 27
Spend evenly laid out on horizontal belt 6, the control of 6 speed of service of belt is 0.3-0.4m/s, and the swing period of magnetic system 7 is 2s, pendulum
Dynamic amplitude 100mm, 6 bearing material section upper surface magnetic field intensity of belt are 3500 Oe.
B, granular material with belt 6 move and into magnetic system 7 field region after, the magnetic-particle in granular material exists
By first group of magnet adsorption in magnetic system 7 under magnetic field force effect, the magnetic-particle adsorbed generates magnetic coagulation phenomenon and is mingled with non-
Magnetic-particle.
C, when granular material is moved horizontally to " zero strength " region in magnetic field with belt 6, the blowing on blower 16 is passed through
The air that mouth 17 is 40m/s toward surface of material injection wind speed, the part non-magnetic particle blowout that will be mixed in magnetic coagulation material
Charge level, and be collected after being taken away with air-flow by collecting hood 9.
D, material continues to move to the field region into second group of magnet with belt 6 afterwards, obtains again selected；Through excessive
Secondary wind magnetic connection choosing, can be such that magnetic material therein is enriched with step by step, output concentrate.
E, concentrate is after belt 6 transports the field region of magnetic system, during by discharging belt pulley 3, by material scraping plate 4 from belt 6
On scrape, stored into concentrate store 5.
F, the bed of material is overflowed by the air of the injection of blowing mouth 17 into the bed of material on blower 16 and carried fine a large amount of
Granular material, fluidised subparticle with air during grid 30 is flowed through, the fine magnetic-particle meeting of major part therein
Mutually absorption forms more coarse grained magnetic material, sinks and is fettered again by magnetic system 7.
G, the positive pressure Dual-Phrase Distribution of Gas olid discharged from grid 30 enters negative pressuren zone, flows through cloth bag collector 10, collects mine tailing,
The pure air of discharge discharges after the pressurization of exhaust fan 13.
As a result：Magnetizing roast ore deposit selects the sorting of technique by wind magnetic-synchro connection, and iron concentrate grade reaches 62-63%, metal returns
Yield reaches 88-90%.
Claims (10)
1. a kind of magnetic material horizontal wind magnetic-synchro joins screening device, it is characterised in that：Including rack（1）And it is arranged on rack
（1）On drive pulley（2）With discharging belt pulley（3）, the discharging belt pulley（3）One side be equipped with material scraping plate（4）And it scrapes
Flitch（4）Lower section be equipped with concentrate store（5）, the drive pulley（2）With discharging belt pulley（3）Pass through belt（6）Connection, institute
State belt（6）The lower section of bearing material section is equipped with the magnetic system for including multigroup magnet（7）, the belt（6）The top of bearing material section is equipped with powder
Shape material feed hopper（8）And collecting hood（9）And granular material feed hopper（8）Close to drive pulley（2）One end set, it is described
Collecting hood（9）Top be connected with cloth bag collector（10）And cloth bag collector（10）Tailing bin is equipped with below discharge port（11）,
The cloth bag collector（10）It is connected with air accumulator（12）And exhaust fan（13）, the air accumulator（12）It is connected with blowback air compressor machine
（14）, the exhaust fan（13）It is connected with exhaust emission pipe（15）, the collecting hood（9）Lower section be equipped with multiple blowers
（16）And blower（16）On be evenly equipped with multiple blowing mouths（17）, the blower（16）One end be connected with air blower（18）.
2. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1, it is characterised in that：The magnetic
System（7）It is arranged on the reciprocal trolley of magnetic system（19）On, the reciprocal trolley of magnetic system（19）Positioned at rack（1）The upper and reciprocal trolley of magnetic system
（19）On be connected with reciprocating mechanism（20）, the reciprocal trolley of magnetic system（19）Pass through synchronising (connecting) rod（21）With blower（16）
Connection, the blower（16）Pass through connection flexible pipe（22）With air blower（18）Connection.
3. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1 or 2, it is characterised in that：Institute
State magnetic system（7）Including non-magnetic bottom plate（23）, the non-magnetic bottom plate（23）It is equipped with magnetic system and fixes magnetic conductive steel plate（24）, it is described
Magnetic system fixes magnetic conductive steel plate（24）On the outside of multigroup magnet and multigroup magnet be installed be equipped with non-magnetic stainless steel cage（25）, institute
State non-magnetic stainless steel cage（25）Top be equipped with multiple non-magnetic stainless steel bars（26）.
4. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 3, it is characterised in that：The magnetic
System（7）In multigroup magnet poles be staggered or set in the same direction.
5. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1, it is characterised in that：The powder
Shape material feed hopper（8）It is equipped with vibrating distributor（27）.
6. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 2, it is characterised in that：It is described past
Multiple motion（20）To be fixed on rack（1）On toggle.
7. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1, it is characterised in that：The receipts
Collection cover（9）Bottom be equipped with rubber apron（28）, the collecting hood（9）Inner wall is equipped with deflector（29）.
8. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1, it is characterised in that：It is described to blow
Air hose（16）Between be equipped with thickness is 20mm, aperture is 1-2mm grid（30）, the grid（30）By the non-magnetic metal of multilayer
The net fissure of displacement be formed by stacking and the spacing of the non-magnetic metal mesh of adjacent two layers be 1-2mm, the grid（30）Lower surface is apart from belt
（6）The upper surface 8-11mm of bearing material section.
9. a kind of magnetic material horizontal wind magnetic-synchro connection screening device according to claim 1, it is characterised in that：The skin
Band（6）The bottom of bearing material section is set there are two belt roller（31）, the belt（6）Belt Conveying there are two being set at the top of circulation section
Support wheel（32）And Belt Conveying support wheel（32）It is fixed on rack（1）On.
10. a kind of magnetic material horizontal wind magnetic-synchro joins choosing method, it is characterised in that this method comprises the following steps：
A, by granular material that granularity is 0-1mm from granular material feed hopper（8）After addition, granular material is in distributing device（27）'s
It is evenly laid out in horizontal belt according to 3-5mm thickness under effect（6）On；
B, granular material is with belt（6）It moves and enters magnetic system（7）Field region after, the magnetic-particle in granular material exists
By magnetic system under magnetic field force effect（7）In first group of magnet adsorption, the magnetic-particle that is adsorbed generates magnetic coagulation phenomenon and is simultaneously mingled with
Non-magnetic particle；
C, granular material is with belt（6）When being moved horizontally to " zero strength " region in magnetic field, pass through blower（16）On blowing
Mouthful（17）The air for being 30-40m/s toward surface of material injection wind speed, the part non-magnetic particle that will be mixed in magnetic coagulation material
Charge level is blown out, and passes through collecting hood after being taken away with air-flow（9）It is collected；
D, afterwards material with belt（6）The field region into second group of magnet is continued to move to, is obtained again selected；By multiple
The connection choosing of wind magnetic, can be such that magnetic material therein is enriched with step by step, output concentrate；
E, concentrate is through belt（6）After the field region for transporting magnetic system, by discharging belt pulley（3）When, by material scraping plate（4）From belt
（6）On scrape, into concentrate store（5）It is stored；
F, blower is passed through（16）On blowing mouth（17）The air of injection into the bed of material overflows the bed of material and carries fine a large amount of
Granular material, fluidised subparticle are flowing through grid with air（30）In the process, the fine magnetic-particle of major part therein
Mutually absorption more coarse grained magnetic material can be formed, sunk and by magnetic system（7）It fetters again；
G, from grid（30）The positive pressure Dual-Phrase Distribution of Gas olid of discharge enters negative pressuren zone, flows through cloth bag collector（10）, mine tailing is collected,
The pure air of discharge is through exhaust fan（13）It is discharged after pressurization.
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| CN201711218770.3A CN108057518B (en) | 2017-11-28 | 2017-11-28 | Horizontal wind-magnetic synchronous joint selection device and method for magnetic materials |
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| CN108722667A (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 horizontal dry separation device |
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