CN109794353A - A kind of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying - Google Patents
A kind of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying Download PDFInfo
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- CN109794353A CN109794353A CN201910159412.2A CN201910159412A CN109794353A CN 109794353 A CN109794353 A CN 109794353A CN 201910159412 A CN201910159412 A CN 201910159412A CN 109794353 A CN109794353 A CN 109794353A
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Abstract
The invention discloses a kind of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying, the inside of the novel magnetic cyclone has been completed the separation of coarse grain intergrowth and magnetic iron ore, on the one hand some monomer dissociations are avoided and magnetic iron ore ore particle that granularity is qualified enters in the sand setting of cyclone, and then caused as sand return overground.On the other hand, the separation of coarse grain intergrowth and magnetic iron ore decreases the treating capacity of subsequent dusting cover, alleviates burden for dusting cover technique, or even can save dusting cover link.Magnetic iron ore it is selected when, magnetic force reselecting column or reverse floatation process can be replaced, slough a large amount of thin muds and intergrowth, improve iron concentrate grade；Have three discharge gates, respectively correspond magnetic iron ore, coarse grain intergrowth and thin mud, in assorting room, can not only slough a large amount of thin muds in magnetic iron ore, but also also achieve sorting classifying, mineral processing circuit can be shortened on the whole.
Description
Technical field
The present invention relates to minerals separation technical fields, more particularly to a kind of three product diameters for magnetic iron ore sorting classifying
To magnetic field magnetic force cyclone.
Background technique
China's iron ore deposit is distributed more widely, and ore type is complicated, resource inferior quality.With not turning off for iron ore deposit
Hair, the poor quality iron ore deposit proportion such as fine- disseminated ore, mineral intergrowth is increasing, and routine, single technique of preparing means are usual
It is difficult to obtain ideal technical-economic index, the research and development of new and effective preparation equipment and process optimization are the skills of technique of preparing development
Art is crucial.
Hydraulic classification swirler is play an important role in iron ore beneficiation, since magnet mineral density is big compared with general gangue mineral
One times, there are many monomer dissociations and magnetic iron ore ore particle that granularity is qualified can enter in the underflow of cyclone, general
The underflow of cyclone can return to grinding machine and regrind in closed circuit grinding, be bound to cause overground, reduction grind grading efficiency in this way.
To improve to the separating effect containing magnetic-particle ore pulp, domestic and foreign scholars devise different types of two products magnetic
Power cyclone.Magnetic force cyclone is that magnetic field force is increased in common cyclone centrifugal force field, and there are mainly three types of the directions of magnetic force:
One is directed to cyclone center, and the monomer magnetic-particle of granularity qualification can be made to enter overflow area, is overflow type magnetic force cyclone, main
It is used to solve the problems, such as the derichment of hydrocyclone during grind grading；Second is that it is consistent with centrifugal force direction, it is underflow type
Magnetic force cyclone is mainly used for the desliming of ore pulp containing magnetic-particle, dewatering operation, the enrichment of magnetic material and dedusting operation；Three
It is that magnetic force direction is vertical with centrifugal force, is mainly used for dense media sorting operation.
The Guo Nana etc. of Wuhan University Of Technology devises a kind of improvement derichment overflow type magnetic force cyclone, the outside of application
The direction for the radial force that magnetic field is subject to the magnetic-particle inside cyclone is to be directed toward cyclone center by cyclone inner wall, gram
The trend that magnetic-particle enters underflow due to density height is taken, and the spatial dimension of magnetic fields is big, has been deep into cone
Part.
Magnetic-particle is attracted to rotation using two electromagnet staggered relatively by the underflow type magnetic force cyclone with design
Wall is flowed, moves to underflow opening discharge along wall under the effect of gravity, non-magnetic particle is then from excessive under the action of ascending current
Flow tube discharge.Two electromagnetism staggered relatively are used by the underflow type magnetic force cyclone that Watson and Amoako-Gyampah is designed
Magnetic-particle is attracted to eddy flow wall by iron, moves to underflow opening discharge along wall under the effect of gravity, and non-magnetic particle then exists
It is discharged under the action of ascending current from overflow pipe.Jin Qiao etc. is devised for the sorting of the selected and pyrite of magnetite concentrate
A kind of underflow type magnetic force cyclone, and the magnetic force systems of this underflow type magnetic force cyclone have been carried out point by simulating and calculating
Analysis, the results showed that this magnetic force systems are parallel to cyclone axis in the magnetic induction intensity component of vertical direction, and are directed toward coil
Center, horizontal direction magnetic induction intensity component are directed toward eddy flow wall.Mainly there are two effects for the magnetic force systems, first, in magnetic field
When intensity is larger, sand setting can be entered with drawing magnetism mine, to increase the rate of recovery of magnetic iron ore in sand setting；Second, magnetic field strength
When smaller, cyclone cone lower part pulp density can be increased, form a higher density layer, while cyclone can also be improved
The density of transition zone between inward eddy and contour stealth, is finally reached the purpose of sorting mined material.The underflow type magnetic force rotation of Jin Qiao design
Stream device is more heavily weighted toward dense medium sorting.
However, there is also some problems in assorting room for both two product magnetic force cyclones.Overflow type magnetic force eddy flow
Device is able to achieve the separation of magnetic material Yu coarse grain gangue, but magnetic material can not be separated with thin mud.Underflow type magnetic force cyclone can
Thin mud is removed, but a possibility that magnetic material enters underflow together with coarse grain gangue increases, and cannot achieve efficient separation, also needed thin
Sieve.
For two product magnetic force cyclones, either underflow type or overflow type, it is difficult to realize desliming, sorting and classification
Multi-functional.
Summary of the invention
The purpose of the present invention is provide a kind of for magnetic iron ore sorting point to solve above-mentioned the deficiencies in the prior art place
Three product radial magnetic field magnetic force cyclones of grade.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of for magnetic iron ore sorting
Classification three product radial magnetic field magnetic force cyclones, comprising: feeding pipe, cylinder, overflow pipe, intergrowth drainage conduit, permanent magnetic system,
Separation sleeve, bottom barrel and magnetic material drainage conduit；
Wherein, cyclone cylinder bottom center hollows out, and is arranged separation sleeve, and the opening of separation sleeve is towards on the outside of cylinder, and separation sleeve
There are the gaps for flowing out material between outer wall and cylinder bottom surface；It places inside separation sleeve for generating radial magnetic field forever
Magnetic magnetic system；Cylinder end face center hollows out, and overflow pipe is fixedly installed；The cylinder outer side bottom surface is fixedly connected with bottom barrel, and every
It is stretched out from bottom barrel from set；Feeding pipe and adhesion is tangentially respectively set along outer ledge in the upper side and lower side of the outer wall of cylinder
Magnetic material drainage conduit is tangentially arranged in body drainage conduit, the outer wall of bottom barrel.
Wherein, colloid seal circle is arranged in the position that cylinder top surface is contacted with overflow pipe outer wall, so that overflow pipe tube body protrudes into
The length of inner barrel is adjustable.
Wherein, colloid seal circle is elastic colloid sealing ring, to be adapted to the different a variety of overflow pipes of nozzle diameter.
Wherein, permanent magnetic system includes permanent magnet and central tube, and the central tube includes disk, round bar and round tube, round bar one
Hold vertical welding in disc centre, the round bar other end is nested in inside round tube, and the permanent magnet is attached at circular tube external wall.
Wherein, the quantity of permanent magnet is 4, and with round tube central axes, what is be centrosymmetric is attached at circular tube external wall.
It is different from the prior art, the three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying of the invention are new
The inside of type magnetic force cyclone has been completed the separation of coarse grain intergrowth and magnetic iron ore, on the one hand avoids some monomer dissociations
And the qualified magnetic iron ore ore particle of granularity enters in the sand setting of cyclone, and then causes as sand return overground.Another party
Face, the separation of coarse grain intergrowth and magnetic iron ore decrease the treating capacity of subsequent dusting cover, alleviate burden for dusting cover technique, very
Dusting cover link can extremely be saved.Magnetic iron ore it is selected when, can replace magnetic force reselecting column or reverse floatation process, slough a large amount of thin muds and
Intergrowth improves iron concentrate grade；Have three discharge gates, respectively corresponds magnetic iron ore, coarse grain intergrowth and thin mud, sorting
Cheng Zhong can not only slough a large amount of thin muds in magnetic iron ore, but also also achieve sorting classifying, can shorten dresser on the whole
Skill process.
Detailed description of the invention
Fig. 1 is a kind of knot of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying provided by the invention
Structure schematic diagram.
Fig. 2 is a kind of bowing for three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying provided by the invention
Depending on structural schematic diagram.
Fig. 3 be in a kind of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying provided by the invention forever
The structural schematic diagram of magnetic magnetic system.
In figure, 1- feeding pipe, 2- cylinder, 3- overflow pipe, 4- intergrowth drainage conduit, 5- permanent magnetic system, 6- separation sleeve, the bottom 7-
Portion's cylinder, 8- magnetic material drainage conduit, 9- permanent magnet, 10- central tube.
Specific embodiment
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But the present invention can be with
Much it is different from other way described herein to implement, those skilled in the art can be without prejudice to intension of the present invention the case where
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
Secondly, the present invention is described in detail using schematic diagram, when describing the embodiments of the present invention, for purposes of illustration only, showing
It is intended to be example, the scope of protection of the invention should not be limited herein.
As shown in FIG. 1, FIG. 1 is a kind of three product radial magnetic field magnetic force for magnetic iron ore sorting classifying provided by the invention
Cyclone, comprising: feeding pipe 1, cylinder 2, overflow pipe 3, intergrowth drainage conduit 4, permanent magnetic system 5, separation sleeve 6, bottom barrel 7 and
Magnetic material drainage conduit 8；
Wherein, 2 bottom center of cyclone cylinder hollows out, and separation sleeve 6 is arranged, the opening of separation sleeve 6 towards 2 outside of cylinder, and every
From between 6 outer walls of set and 2 bottom surface of cylinder, there are the gaps for flowing out material；It places inside separation sleeve 6 for generating radial direction
The permanent magnetic system 5 in magnetic field；2 end face center of cylinder hollows out, and overflow pipe 3 is fixedly installed；2 outer side bottom surface of cylinder is fixedly connected with bottom
Portion's cylinder 7, and separation sleeve 6 is stretched out from bottom barrel 7；Tangentially distinguish along outer ledge the upper side and lower side of the outer wall of cylinder 2
Magnetic material drainage conduit 8 is tangentially arranged in setting feeding pipe 1 and intergrowth drainage conduit 4, the outer wall of bottom barrel 7.
Wherein, colloid seal circle is arranged in the position that 2 top surface of cylinder is contacted with 3 outer wall of overflow pipe, so that 3 tube body of overflow pipe is stretched
The length entered inside cylinder 2 is adjustable.
Wherein, colloid seal circle is elastic colloid sealing ring, to be adapted to the different a variety of overflow pipes 3 of nozzle diameter.
Wherein, permanent magnetic system 5 includes permanent magnet 9 and central tube 10, and the central tube 10 includes disk, round bar and round tube,
Round bar one end vertical welding is nested in inside round tube in disc centre, the round bar other end, and the permanent magnet 9 is attached at outside round tube
Wall.Magnetic system can be static, also rotatable, generates radial magnetic field.
Wherein, the quantity of permanent magnet 9 is 4, and with round tube central axes, what is be centrosymmetric is attached at circular tube external wall.
The present invention devises a kind of three novel product radial magnetic field magnetic force cyclones, make coarse grain intergrowth and magnetic iron ore into
Row separation, is discharged from different drainage conduits respectively, it is therefore prevented that qualified magnetic iron ore ore particle is mixed into coarse grain intergrowth
Sand setting continues mill through grinding machine again as sand return and goes down, and also can reduce the treating capacity in subsequent dusting cover technical process.It is a large amount of thin
Mud is flowed out by interior circulation from overflow pipe, so that this three novel product magnetic force cyclones realize the selected desliming of magnetic iron ore
It is synchronous with sorting classifying to carry out.
The principles of science of foundation of the present invention: raw ore is entered with certain initial velocity from feeding pipe 1 in tangential direction by pressure
Inside cylinder 2, moved downward in cyclone cylinder 2 by under gravity, centrifugal force and magnetic field force synergy.Work as ore pulp
When being moved downwardly to certain position along wall rotation, since material is constantly close to permanent magnetic system 5, the magnetic field force being subject to is also more next
Stronger, when the magnetic field force being subject to is greater than centrifugal force, magnetic material is moved under compound force field to center separation sleeve direction.Most
Eventually, magnetic iron ore enters in bottom barrel 7 along separation sleeve 6 from the gap between 2 bottom surface of separation sleeve 6 and cylinder, then through magnetic
Property material drainage conduit 8 flow out.The gravity and centrifugal force that coarse grain intergrowth is subject to inside cyclone are much larger than magnetic field force, through tangent line
Feed enters in cylinder 2, will be rotated down and move along cyclone wall, outside circulation is formed, finally from intergrowth drainage conduit edge
Tangent line outflow.Thin mud is all smaller by gravity and centrifugal force in cyclone since density itself is low, fine size, movement
State is to be discharged by forming inner ring upper up-flow between coarse grain intergrowth and magnetic iron ore eventually by overflow pipe 3.
Fig. 1 and Fig. 2 is the sectional view and top view of three product radial magnetic field magnetic force cyclones, feeding pipe 1 and cylinder 2 in figure
Tangential by welding to be connected, the initial velocity that material enters cylinder is controlled by feed pump, completes the feed of cyclone.
Overflow pipe 3 is embedded within portion from 2 center of cylinder, and the insertion depth of overflow pipe 3 can regulate and control.Thin mud in material
All smaller by gravity and centrifugal force in cyclone since density itself is low, fine size, the state of movement is connected in coarse grain
By forming inner ring upper up-flow between raw body and magnetic iron ore, eventually by overflow pipe 3 be discharged, complete magnetic iron ore it is selected in desliming
Process.One side lower part of cylinder 2 is tangentially connected by welding with intergrowth drainage conduit 4, and flanged joint one is used immediately below cylinder 2
The lesser bottom barrel 7 of internal diameter, 7 side of bottom barrel is connected by welding with magnetic material drainage conduit 8, from bottom barrel 7
Bottom center is embedded in separation sleeve 6, closely connects between separation sleeve 6 and bottom barrel 7, gapless, separation sleeve 6 gos deep into cylinder 2
In, there is gap between separation sleeve 6 and cylinder 2, the material in cylinder 2 can be made to enter in bottom barrel 7 by gap, separation sleeve
Place permanent magnetic system 5 in 6 inside.The gravity and centrifugal force that coarse grain intergrowth in material is subject to inside cyclone are much larger than magnetic field
Power enters in cylinder 2 through tangent line feed, will be rotated down and move along cyclone wall, outside circulation formed, finally from intergrowth
Drainage conduit 4 tangentially flows out.And magnetic material is stronger by the magnetic field force for being directed toward permanent magnetic system 5 in cylinder 2, magnetic material edge
Separation sleeve 5 in the gap between separation sleeve and cylinder 2 enter bottom barrel 7 in, then through magnetic material drainage conduit 8 flow
Out, the separation of coarse grain gangue and magnetic iron ore is realized, the sorting classifying in magnetic iron ore refining process is completed.
Fig. 3 is the sectional view and top view of permanent magnetic system 5, and central tube 10 is made of bottom surface disk and round bar and round tube,
It is connected at the disc centre of bottom surface with round bar with welding manner, round bar gos deep into inside round tube, and permanent magnet 9 is embedded in the circle of central tube 10
Guan Shang regulates and controls magnetic field strength by quantity of the permanent magnet on round tube and arrangement mode, in figure by taking 4 permanent magnets as an example, permanent magnetism
Magnetic system can be static, and the rotation of central tube 10 can also be made to rotate entire permanent magnetic system by motor.
It is different from the prior art, the three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying of the invention are new
The inside of type magnetic force cyclone has been completed the separation of coarse grain intergrowth and magnetic iron ore, on the one hand avoids some monomer dissociations
And the qualified magnetic iron ore ore particle of granularity enters in the sand setting of cyclone, and then causes as sand return overground.Another party
Face, the separation of coarse grain intergrowth and magnetic iron ore decrease the treating capacity of subsequent dusting cover, alleviate burden for dusting cover technique, very
Dusting cover link can extremely be saved.Magnetic iron ore it is selected when, can replace magnetic force reselecting column or reverse floatation process, slough a large amount of thin muds and
Intergrowth improves iron concentrate grade；Have three discharge gates, respectively corresponds magnetic iron ore, coarse grain intergrowth and thin mud, sorting
Cheng Zhong can not only slough a large amount of thin muds in magnetic iron ore, but also also achieve sorting classifying, can shorten dresser on the whole
Skill process.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (5)
1. a kind of three product radial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying characterized by comprising pan feeding
Pipe, cylinder, overflow pipe, intergrowth drainage conduit, permanent magnetic system, separation sleeve, bottom barrel and magnetic material drainage conduit；
Wherein, cyclone cylinder bottom center hollows out, and is arranged separation sleeve, and the opening of separation sleeve is towards on the outside of cylinder, and separation sleeve
There are the gaps for flowing out material between outer wall and cylinder bottom surface；It places inside separation sleeve for generating radial magnetic field forever
Magnetic magnetic system；Cylinder end face center hollows out, and overflow pipe is fixedly installed；The cylinder outer side bottom surface is fixedly connected with bottom barrel, and every
It is stretched out from bottom barrel from set；Feeding pipe and adhesion is tangentially respectively set along outer ledge in the upper side and lower side of the outer wall of cylinder
Magnetic material drainage conduit is tangentially arranged in body drainage conduit, the outer wall of bottom barrel.
2. the three product radial magnetic field magnetic force cyclones according to claim 1 for magnetic iron ore sorting classifying, feature
It is, colloid seal circle is arranged in the position that the cylinder top surface is contacted with overflow pipe outer wall, so that overflow pipe tube body protrudes into cylinder
Internal length is adjustable.
3. the three product radial magnetic field magnetic force cyclones according to claim 2 for magnetic iron ore sorting classifying, feature
It is, the colloid seal circle is elastic colloid sealing ring, to be adapted to the different a variety of overflow pipes of nozzle diameter.
4. the three product radial magnetic field magnetic force cyclones according to claim 1 for magnetic iron ore sorting classifying, feature
It is, the permanent magnetic system includes permanent magnet and central tube, and the central tube includes disk, round bar and round tube, and round bar one end is hung down
It directly is welded in disc centre, the round bar other end is nested in inside round tube, and the permanent magnet is attached at circular tube external wall.
5. the three product radial magnetic field magnetic force cyclones according to claim 4 for magnetic iron ore sorting classifying, feature
It is, the quantity of the permanent magnet is 4, and with round tube central axes, what is be centrosymmetric is attached at circular tube external wall.
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| CN201910159412.2A CN109794353B (en) | 2019-03-04 | 2019-03-04 | Three-product radial magnetic field magnetic cyclone for magnetite separation and classification |
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| CN201910159412.2A CN109794353B (en) | 2019-03-04 | 2019-03-04 | Three-product radial magnetic field magnetic cyclone for magnetite separation and classification |
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Cited By (2)
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|---|---|---|---|---|
| CN112791868A (en) * | 2021-02-25 | 2021-05-14 | 国家能源集团宁夏煤业有限责任公司 | Separating device |
| CN114130521A (en) * | 2021-11-30 | 2022-03-04 | 攀钢集团研究院有限公司 | Magnetic cyclone desliming device and method for fine-particle ilmenite |
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| CN114130521A (en) * | 2021-11-30 | 2022-03-04 | 攀钢集团研究院有限公司 | Magnetic cyclone desliming device and method for fine-particle ilmenite |
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|---|---|
| CN109794353B (en) | 2021-08-17 |
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