CN104959226A - Dry magnetic separator with introduced wind power and mineral magnetic separation method - Google Patents
Dry magnetic separator with introduced wind power and mineral magnetic separation method Download PDFInfo
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- CN104959226A CN104959226A CN201510442387.0A CN201510442387A CN104959226A CN 104959226 A CN104959226 A CN 104959226A CN 201510442387 A CN201510442387 A CN 201510442387A CN 104959226 A CN104959226 A CN 104959226A
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Abstract
The invention discloses a dry magnetic separator with introduced wind power and a mineral magnetic separation method. The dry magnetic separator comprises an outer shell, a feeding device, a ventilation roller barrel, an unloading roller, a concentrate hopper and a tailings hopper, wherein ventilation roller barrel is arranged in the outer shell in a horizontal rotation manner; a low-frequency alternating magnetic field is arranged at the surface of the ventilation roller barrel; a plurality of through holes are uniformly formed in the surface of the ventilation roller barrel; ventilation materials are embedded into the through holes; the ventilation roller barrel is provided with a closed inner cavity; pressure air is introduced into the inner cavity; the feeding device corresponding to the ventilation roller barrel is arranged at the top of the outer shell; the unloading roller is arranged at the right side of the ventilation roller barrel; the concentrate hopper is correspondingly arranged below the unloading roller; the tailings hopper is correspondingly arranged below the ventilation roller barrel. According to the device and the method, the wind power is introduced into the separation and sorting processes of magnetic materials, so that the wind power, gravity and centrifugal force together directly take part in completion with magnetic force, and further the recovery rate of magnetic mineral can be obviously increased, and the concentrate grade is obviously promoted.
Description
Technical field
The invention belongs to mineral magnetic separation technology field, particularly relate to a kind of dry-type magnetic extractor and mineral magnetic selection method.
Background technology
So-called magnetic separation, utilizes the magnetic contrast of sorted material, exactly to a kind of ore dressing means that mineral grain is separated in sorting magnetic field.Magnetic separation can divide wet magnetic separation and dry type magnetic separation two kinds of forms.Wet magnetic separation needs using water as working media, will be difficult to realize in the area of serious water shortage, and also may cause severe contamination to surrounding enviroment; Compared with the technological process of wet magnetic separation complexity and application limitation, dry-type magnetic selection apparatus has the many advantages such as structure is simple, small investment, operating cost are low, energy-conserving and environment-protective.Therefore, dry type magnetic separation is developing in recent years with obtaining very fast degree.
Along with high-pressure roller mill is in the extensive utilization in grinding field, traditional dry-type magnetic extractor cannot meet growing demand of processing quantity; In addition, conventional dry magnetic separator makes the magnetic material grade that sorts out not high due to phenomenons such as magnetic coagulation and magnetic are mingled with, be difficult to the demand meeting final products.For above deficiency or the drawback of conventional dry magnetic separation, do a large amount of work in recent years at the R&D personnel of ore dressing field both at home and abroad, carry out various exploration.But fine fraction magnetic material to be mingled with etc. to phenomenon and still cannot to solve very well sorting the magnetic coagulation that produces in process and magnetic.
Therefore, how to solve the problems of the technologies described above and become this those skilled in the art's problem demanding prompt solution.
Summary of the invention
Object of the present invention is exactly the problem for above-mentioned prior art, provides a kind of dry-type magnetic extractor and the mineral magnetic selection method of introducing wind-force, thus solves above-mentioned prior art Problems existing completely.
Object of the present invention is realized by following technical proposals:
A kind of dry-type magnetic extractor introducing wind-force, comprise shell, charging gear, ventilative roller, discharge rolls, concentrate bucket and mine tailing bucket, described ventilative roller horizontally rotates installation in the enclosure, low frequency alternating magnetic field is provided with at ventilative roller surface, this ventilative roller surface uniform offers some through holes, gas permeable material is inlayed in through hole, and ventilative roller has closed inner chamber, and to cut-in pressure gas in inner chamber, the ventilative roller of charging gear correspondence is arranged on cover top portion, discharge rolls is arranged on the right side of ventilative roller, concentrate bucket correspondence is arranged on below discharge rolls, mine tailing bucket correspondence is arranged at below ventilative roller.
Further, the magnetic field intensity of described low frequency alternating magnetic field is 600Gs ~ 6000Gs, and alternative frequency is 0 ~ 120Hz.
Further, described ventilative roller adopts glass-reinforced plastic material to make, and gas permeable material is macromolecular material, corundum ceramic material or powdered metallurgical material.
Further, in described ventilative roller, coaxial rotation installs magnetic roller, and left magnetic roller cylinder surface offers some passages, and sets firmly magnetic system along magnetic roller circumference, this magnetic system is made up of the permanent magnetism core being equidistantly evenly arranged on magnetic roller surface, and adjacent permanent magnet core magnetic pole is different.
Further, adjustable angle and the adjustable sub-material baffle plate of horizontal level are installed between described concentrate bucket and mine tailing bucket.
Further, described discharge rolls is the magnetic induction roller that permeability magnetic material is made.
Further, described discharge rolls surface arranges trapezoidal thread.
Further, described cover top portion is provided with dust collecting system.
A kind of method utilizing above-mentioned dry-type magnetic extractor to carry out mineral magnetic separation, it is characterized in that: mineral to be selected are inserted ventilative roller surface from charging gear, magnetic mineral particles in mineral to be selected is adsorbed to ventilative roller surface under magneticaction, rotate counterclockwise with ventilative roller, non magnetic ore particle in mineral to be selected is left in the mine tailing bucket below ventilative roller, magnetic mineral particles ceaselessly rolls at ventilative roller surface and moves under the effect of alternating magnetic field, pressed gas impacts magnetic mineral particles from ventilative roller surface ejection, to make in magnetic material parcel and the non-magnetic particle be mingled with or sub magnetic debris at gravity, centrifugal inertial force, come off from ventilative roller surface under the effect of disturbance of magnetic field effect and wind-force, wherein partial particulate is thin, lightweightly to be put away by dust collecting system, and most of particle is larger, dropping in mine tailing bucket of heavier mass.Finally, the stronger high-grade concentrate granular absorption of remaining magnetic is at ventilative roller surface, and within the magnetic fields scope being brought to discharge rolls along with ventilative rotating counterclockwise of roller, thus caught by the High-gradient Magnetic place that discharge rolls induces, and taken away the magnetic fields scope of magnetic roller along with the continuous rotation of discharge rolls, thrown into concentrate bucket under the effect of the centrifugal force finally produced because of rotation in discharge rolls.
Compared with prior art, beneficial effect of the present invention is:
1. the size fraction ranges of very large, the selected mineral of magnetic separator disposal ability can be very wide;
2., when ensureing that tailings grade is qualified, the product that concentrate grade is selected than common magnetic separator will improve more than 50%;
3. magnetic separator has structure simply, reasonable in design, easy to operate, regulates the advantages such as accurate;
4. wind-force is incorporated into sorting in process of magnetic material, thus in the middle of the competition that wind-force is participated directly in magnetic force together with gravity, centrifugal force, thus significantly promote the magnetic mineral rate of recovery and concentrate grade;
5. farthest solve magnetic material and sorting the magnetic coagulation and magnetic Inclusion Problem that produce in process, make the grade of magnetic concentrate product reach high level.
6. this dry-type magnetic extractor and mineral magnetic selection method, be applicable to the sorting of industry magnetic minerals after milling equipment grinding such as metallurgy, mine, chemical industry, be particularly useful for the particle of diameter≤5mm or the sorting of powdery type mineral aggregate.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation of the ventilative roller in Fig. 1;
Fig. 3 is the fiting relation figure of ventilative roller and magnetic roller.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further illustrated.
As shown in Figure 1 to Figure 3, a kind of dry-type magnetic extractor introducing wind-force, comprises shell 1, charging gear 2, ventilative roller 3, magnetic roller 4, discharge rolls 5, concentrate bucket 6 and mine tailing bucket 7.Described ventilative roller 3 horizontally rotates and is arranged in shell 1, in ventilative roller 3, coaxial rotation installs magnetic roller 4, left magnetic roller cylinder 4 surface offers some passages, and set firmly magnetic system along magnetic roller 4 circumference, this magnetic system is made up of the permanent magnetism core 8 being equidistantly evenly arranged on magnetic roller surface, and adjacent permanent magnet core 8 magnetic pole is different.Magnetic roller 4 and ventilative roller 3 relatively rotate thus form low frequency alternating magnetic field on ventilative roller 3 surface.The magnetic field intensity of described low frequency alternating magnetic field is 600Gs ~ 6000Gs, and alternative frequency is 0 ~ 120Hz.
Described ventilative roller 3 surface uniform offers some through holes 11, in through hole 11, inlay gas permeable material.And ventilative roller 3 and magnetic roller 4 closed at both ends, thus form at ventilative roller 3 and magnetic roller 4 inside the inner chamber closed.External pressure source of the gas introduces pressed gas by turning in axial magnetic roller 4 inner chamber of magnetic roller 4, and its gas pressure is within the scope of 1000Pa ~ 10000Pa.The rotating shaft 12 of described magnetic roller 4 is hollow shaft, and it stretches on a section in magnetic roller 4 inner chamber and offers air-vent 14, and pressed gas enters the inner chamber of magnetic roller 4 from air-vent 14.
Described ventilative roller 3 adopts glass-reinforced plastic material to make, and gas permeable material is macromolecular material, corundum ceramic material or powdered metallurgical material.
The ventilative roller 3 of charging gear 2 correspondence is arranged on shell 1 top, and discharge rolls 5 is arranged on ventilative roller 3 upper right corner, and concentrate bucket 6 correspondence is arranged on below discharge rolls 5, and mine tailing bucket 7 correspondence is arranged at below ventilative roller 3.Between concentrate bucket 6 and mine tailing bucket 7, install sub-material baffle plate 9, this sub-material baffle plate 9 can adjust luffing angle and adjust horizontal level at the axis direction of ventilative roller 3 and magnetic roller 4.
The magnetic induction roller that described discharge rolls 5 is made for permeability magnetic material, its surface arranges trapezoidal thread, this trapezoidal thread can reduce induction area, make induced field more concentrated, very strong magnetic field can be produced in the crest portion of trapezoidal thread, increase the induced field intensity of discharge rolls, be more conducive to the absorption of magnetic material.
Described shell 1 top is also provided with the dust collecting system 10 providing negative pressure to housing interior volume.
A kind of method utilizing above-mentioned dry-type magnetic extractor to carry out mineral magnetic separation, mineral to be selected are inserted ventilative roller 3 surface from charging gear 2, magnetic mineral particles in mineral to be selected is adsorbed to ventilative roller 3 surface under magneticaction, rotates counterclockwise with ventilative roller 3, non magnetic ore particle in mineral to be selected due to not by the effect of magnetic force, is mainly directly left in the mine tailing bucket 7 below ventilative roller 3 under the effect of gravity and centrifugal force, magnetic mineral particles ceaselessly rolls and slowly movement on ventilative roller 3 surface under the effect of alternating magnetic field, pressed gas enters in ventilative roller 3 by the passage on magnetic roller 4 simultaneously, and spray impact magnetic mineral particles from the through hole 11 on ventilative roller 3 surface, to make in magnetic material parcel and the non-magnetic particle be mingled with or sub magnetic debris at gravity, centrifugal inertial force, come off from ventilative roller 3 surface under the effect of disturbance of magnetic field effect and wind-force, wherein partial particulate is thin, lightweightly to be put away by dust collecting system 10, and most of particle is larger, dropping in mine tailing bucket 7 of heavier mass.Finally, the high-grade concentrate granular absorption that remaining magnetic is stronger is surperficial at ventilative roller 3, and within the magnetic fields scope being brought to discharge rolls 5 along with ventilative rotating counterclockwise of roller 3, thus caught by the High-gradient Magnetic place that discharge rolls 5 induces, and taken away the magnetic fields scope of magnetic roller 4 along with the continuous rotation of discharge rolls 5, thrown into concentrate bucket 6 under the effect of the centrifugal force finally produced because of rotation in discharge rolls 5.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. introduce the dry-type magnetic extractor of wind-force for one kind, it is characterized in that: comprise shell, charging gear, ventilative roller, discharge rolls, concentrate bucket and mine tailing bucket, described ventilative roller horizontally rotates installation in the enclosure, low frequency alternating magnetic field is provided with at ventilative roller surface, this ventilative roller surface uniform offers some through holes, gas permeable material is inlayed in through hole, and ventilative roller has closed inner chamber, and to cut-in pressure gas in inner chamber, the ventilative roller of charging gear correspondence is arranged on cover top portion, discharge rolls is arranged on the right side of ventilative roller, concentrate bucket correspondence is arranged on below discharge rolls, mine tailing bucket correspondence is arranged at below ventilative roller.
2. the dry-type magnetic extractor of introduction wind-force according to claim 1, is characterized in that: the magnetic field intensity of described low frequency alternating magnetic field is 600Gs ~ 6000Gs, and alternative frequency is 0 ~ 120Hz.
3. the dry-type magnetic extractor of introduction wind-force according to claim 2, is characterized in that: described ventilative roller adopts glass-reinforced plastic material to make, and gas permeable material is macromolecular material, corundum ceramic material or powdered metallurgical material.
4. the dry-type magnetic extractor of introduction wind-force according to claim 3, it is characterized in that: in described ventilative roller, coaxial rotation installs magnetic roller, left magnetic roller cylinder surface offers some passages, and set firmly magnetic system along magnetic roller circumference, this magnetic system is made up of the permanent magnetism core being equidistantly evenly arranged on magnetic roller surface, and adjacent permanent magnet core magnetic pole is different.
5. the dry-type magnetic extractor of the introduction wind-force according to any one of claim 1-4, is characterized in that: be provided with adjustable angle and the adjustable sub-material baffle plate of horizontal level between described concentrate bucket and mine tailing bucket.
6. the dry-type magnetic extractor of introduction wind-force according to claim 5, is characterized in that: described discharge rolls is the magnetic induction roller that permeability magnetic material is made.
7. the dry-type magnetic extractor of introduction wind-force according to claim 6, is characterized in that: described discharge rolls surface arranges trapezoidal thread.
8. the dry-type magnetic extractor of the introduction wind-force according to claim 6 or 7, is characterized in that: described cover top portion is provided with dust collecting system.
9. utilize the dry-type magnetic extractor described in any one of claim 1-8 to carry out the method for mineral magnetic separation, it is characterized in that: mineral to be selected are inserted ventilative roller surface from charging gear, magnetic mineral particles in mineral to be selected is adsorbed to ventilative roller surface under magneticaction, rotate counterclockwise with ventilative roller, non magnetic ore particle in mineral to be selected is left in the mine tailing bucket below ventilative roller, magnetic mineral particles ceaselessly rolls at ventilative roller surface and moves under the effect of alternating magnetic field, pressed gas impacts magnetic mineral particles from ventilative roller surface ejection, to make in magnetic material parcel and the non-magnetic particle be mingled with or sub magnetic debris at gravity, centrifugal inertial force, come off from ventilative roller surface under the effect of disturbance of magnetic field effect and wind-force, wherein partial particulate is thin, lightweightly to be put away by dust collecting system, and most of particle is larger, heavier mass drop in mine tailing bucket, finally, the stronger high-grade concentrate granular absorption of remaining magnetic is at ventilative roller surface, and within the magnetic fields scope being brought to discharge rolls along with ventilative rotating counterclockwise of roller, thus caught by the High-gradient Magnetic place that discharge rolls induces, and taken away the magnetic fields scope of magnetic roller along with the continuous rotation of discharge rolls, thrown into concentrate bucket under the effect of the centrifugal force finally produced because of rotation in discharge rolls.
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| CN201510442387.0A CN104959226B (en) | 2015-07-24 | 2015-07-24 | A kind of dry-type magnetic extractor and mineral magnetic selection method for introducing wind-force |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665129A (en) * | 2016-04-22 | 2016-06-15 | 成都利君科技有限责任公司 | Dry-type magnetic separator with multiple magnetic systems and permanent magnetic roller |
| CN105772219A (en) * | 2016-05-10 | 2016-07-20 | 中南大学 | Wind dry type magnetic separator |
| CN105797845A (en) * | 2016-05-17 | 2016-07-27 | 张进才 | Dry type magnetic roller and magnetic separator |
| CN105817319A (en) * | 2016-05-17 | 2016-08-03 | 中建材（合肥）粉体科技装备有限公司 | Wind and magnetism combination type iron separator |
| CN107537684A (en) * | 2017-09-14 | 2018-01-05 | 中南大学 | A kind of sorting unit |
| CN108722661A (en) * | 2018-09-03 | 2018-11-02 | 马鞍山起劲磁塑科技有限公司 | Magnetic separator for the high-precision purification of ferromagnetism powder |
| CN110560262A (en) * | 2019-09-17 | 2019-12-13 | 北矿机电科技有限责任公司 | air flow dry type cylinder magnetic separator |
| CN110947496A (en) * | 2019-12-10 | 2020-04-03 | 成都利君实业股份有限公司 | Magnetic ore dry grinding and sorting system |
| CN114602649A (en) * | 2022-03-15 | 2022-06-10 | 鞍钢集团北京研究院有限公司 | Magnetic separation and method based on wind gravity magnetic composite force field |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105665129A (en) * | 2016-04-22 | 2016-06-15 | 成都利君科技有限责任公司 | Dry-type magnetic separator with multiple magnetic systems and permanent magnetic roller |
| CN105772219A (en) * | 2016-05-10 | 2016-07-20 | 中南大学 | Wind dry type magnetic separator |
| CN105797845A (en) * | 2016-05-17 | 2016-07-27 | 张进才 | Dry type magnetic roller and magnetic separator |
| CN105817319A (en) * | 2016-05-17 | 2016-08-03 | 中建材（合肥）粉体科技装备有限公司 | Wind and magnetism combination type iron separator |
| CN107537684A (en) * | 2017-09-14 | 2018-01-05 | 中南大学 | A kind of sorting unit |
| CN108722661A (en) * | 2018-09-03 | 2018-11-02 | 马鞍山起劲磁塑科技有限公司 | Magnetic separator for the high-precision purification of ferromagnetism powder |
| CN110560262A (en) * | 2019-09-17 | 2019-12-13 | 北矿机电科技有限责任公司 | air flow dry type cylinder magnetic separator |
| CN110947496A (en) * | 2019-12-10 | 2020-04-03 | 成都利君实业股份有限公司 | Magnetic ore dry grinding and sorting system |
| CN114602649A (en) * | 2022-03-15 | 2022-06-10 | 鞍钢集团北京研究院有限公司 | Magnetic separation and method based on wind gravity magnetic composite force field |
| CN114602649B (en) * | 2022-03-15 | 2024-03-26 | 鞍钢集团北京研究院有限公司 | Magnetic separation and method based on wind-gravity-magnetic composite force field |
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