CN109794352A - A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying - Google Patents
A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying Download PDFInfo
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- CN109794352A CN109794352A CN201910159334.6A CN201910159334A CN109794352A CN 109794352 A CN109794352 A CN 109794352A CN 201910159334 A CN201910159334 A CN 201910159334A CN 109794352 A CN109794352 A CN 109794352A
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Abstract
The invention discloses a kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying, the separation of coarse grain intergrowth and magnetic iron ore is had been completed inside it, 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 corresponds magnetic iron ore, coarse grain intergrowth and thin mud.In assorting room, a large amount of thin muds in magnetic iron ore can be not only sloughed, 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 axis 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 axial 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 axial 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
Three product axial magnetic field magnetic force cyclones of classification, comprising: feeding pipe, cylinder, overflow pipe, sorting chamber, electromagnetic coil, magnetic material
Expect drainage conduit and intergrowth drainage conduit；
Wherein, cyclone cylinder one end connects a sorting chamber top, and the sorting chamber is in tapered shape, and bottom center hollows out,
And magnetic material drainage conduit is fixedly installed, the magnetic material drainage conduit is funnel-shaped, including funnel bowl and bell mouth, bell mouth
Sealing is fixed in the through-hole for being placed in sorting chamber bottom center, and extend out on the outside of sorting chamber, and electromagnetic coil is by that will lead
The tube wall that line is wound in the part that bell mouth is stretched out on the outside of sorting chamber is formed；Cylinder end face center hollows out, and overflow pipe is fixedly installed；
Feeding pipe and intergrowth drainage conduit, bottom are tangentially respectively set along outer ledge on the downside of the upside of the outer wall of cylinder and sorting cavity outer wall
Magnetic material drainage conduit is tangentially arranged in the outer wall of portion's cylinder.
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.
It is different from the prior art, the three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying of the invention,
The separation of coarse grain intergrowth and magnetic iron ore is had been completed inside it, on the one hand avoids some monomer dissociations and granularity economic cooperation
The magnetic iron ore ore particle of lattice enters in the sand setting of cyclone, and then causes as sand return overground.On the other hand, coarse grain intergrowth
With the separation of magnetic iron ore, the treating capacity of subsequent dusting cover is decreased, alleviates burden for dusting cover technique, or even dusting cover ring can be saved
Section；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 corresponds magnetic iron ore, coarse grain intergrowth and thin mud.It, not only can be in assorting room
A large amount of thin muds in magnetic iron ore are sloughed, and also achieve sorting classifying, mineral processing circuit can be shortened on the whole.
Detailed description of the invention
Fig. 1 is a kind of knot of three product axial 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 axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying provided by the invention
Depending on structural schematic diagram.
In figure, 1- feeding pipe, 2- cylinder, 3- overflow pipe, 4- sorting chamber, 6- electromagnetic coil, 7- magnetic material drainage conduit, 8-
Intergrowth drainage conduit.
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 axial magnetic field magnetic force for magnetic iron ore sorting classifying provided by the invention
Cyclone, comprising: feeding pipe 1, cylinder 2, overflow pipe 3, sorting chamber 4, electromagnetic coil 6, magnetic material drainage conduit 7 and intergrowth row
Expects pipe 8；
Wherein, 2 one end of cyclone cylinder connects 4 top of a sorting chamber, and the sorting chamber 4 is in tapered shape, and bottom center digs
Sky, and magnetic material drainage conduit 7 is fixedly installed, the magnetic material drainage conduit 7 is funnel-shaped, including funnel bowl and bell mouth,
Sealing is fixed in the through-hole that bell mouth is placed in 4 bottom center of sorting chamber, and extend out to 4 outside of sorting chamber, and electromagnetic coil 6 is
It is formed by the tube wall that conducting wire is wound in the part that 4 outside of sorting chamber is stretched out in bell mouth；2 end face center of cylinder hollows out, fixed
Overflow pipe 3 is set；1 He of feeding pipe is tangentially respectively set in lateral edge outer ledge under 4 outer wall of upside and sorting chamber of the outer wall of cylinder 2
Intergrowth drainage conduit 8.
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 overflow pipe tube body is stretched
The length for entering inner barrel 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.
Three novel product radial magnetic field magnetic force cyclones of the invention, separate coarse grain intergrowth with magnetic iron ore,
It is discharged respectively from different drainage conduits, it is therefore prevented that qualified magnetic iron ore ore particle and coarse grain intergrowth are mixed into sand setting conduct
Sand return continues mill through grinding machine again and goes down, and also can reduce the treating capacity in subsequent dusting cover technical process.A large amount of thin mud passes through interior
Circulation is flowed out from overflow pipe, so that this three novel product magnetic force cyclones realize the selected desliming of magnetic iron ore and sorting point
The synchronous of grade carries out.
The principles of science of foundation: raw material is tangentially fed from feeding pipe 1 into the cylinder 2 of cyclone, since feed is pressed
The influence of power and gravity rotates downwards in cylinder 2 along cyclone wall, when sorted 4 region of chamber, because of internal diameter
Expand, rotate downward liquid and reduced by pressure influence, diffusion motion, while the magnetic field generated by lower section electromagnetic coil 6 occurs
Power, magnetic-particle are discharged to aggregation among cyclone, and then from magnetic material drainage conduit.And the magnetic field force that coarse grain intergrowth is subject to
Much smaller than centrifugal force and gravity, it will moved downward along cyclone wall, until tangentially being arranged from coarse grain intergrowth drainage conduit 8
Out.For thin mud because density is low, fine size, the magnetic field force being subject to is big not as good as magnetic iron ore, and coarse grain adhesion is also less than by centrifugal force
Body is finally flowed out by the interior circulation of rising from overflow pipe 3.
Effect of the device of the invention inside cyclone by the compound force field of the formation such as magnetic force, gravity, centrifugal force, most
The whole available three kinds of different products of material, realize sorting classifying and the desliming of magnetic iron ore, improve the efficiency of sorting, are magnet
Mine ore dressing provides a kind of novel picking equipment.
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
Density is low, fine size, all smaller by gravity and centrifugal force in cyclone, and the state of movement is in coarse grain intergrowth and magnetic
By forming inner ring upper up-flow between iron ore, eventually by overflow pipe 3 be discharged, complete magnetic iron ore it is selected in desliming process.
One frustum type sorting chamber 4 of flanged joint is used below cylinder 2, the internal diameter of sorting chamber 4 is gradually increased from up to down,
It is external tangentially connected by welding with intergrowth drainage conduit 8.
The sealed bottom of sorting chamber 4 digs out a circular hole at its center, places magnetic material drainage conduit 7, shape at circular hole
Shape top is funnel, and lower part is tubular type, seamless between 4 bottom surface of magnetic material drainage conduit 7 and sorting chamber, meanwhile, magnetic material
Expect that funnel bowl position is entirely in sorting chamber 4 in drainage conduit 7, in sorting chamber 4, another part extends round tube a part of bell mouth
To sorting chamber 4, the round tube outside sorting chamber 4 winds electromagnetic coil 6, and electromagnetic coil 6 produces inside cyclone after being powered
Raw axial magnetic field.The intensity in magnetic field passes through the current control passed through in coil.
When the material being sorted enters in sorting chamber 4, because of the expansion of 4 internal diameter of sorting chamber, rotates downward liquid and be pressurized
Power influences to reduce, and diffusion motion, while the attraction of the magnetic field force generated by lower section electromagnetic coil 6 occurs, magnetic-particle is to eddy flow
Aggregation among device, and then be discharged from magnetic material drainage conduit 7.Meanwhile the coarse grain intergrowth in material inside cyclone by
Gravity and centrifugal force be much larger than magnetic field force, through tangent line feed enter cylinder 2 in, fortune will be rotated down along cyclone wall
It is dynamic, outside circulation is formed, is finally tangentially flowed out from intergrowth drainage conduit 8, the selected sorting classifying of magnetic iron ore is completed.
It is different from the prior art, the three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying of the invention,
The separation of coarse grain intergrowth and magnetic iron ore is had been completed inside it, on the one hand avoids some monomer dissociations and granularity economic cooperation
The magnetic iron ore ore particle of lattice enters in the sand setting of cyclone, and then causes as sand return overground.On the other hand, coarse grain intergrowth
With the separation of magnetic iron ore, the treating capacity of subsequent dusting cover is decreased, alleviates burden for dusting cover technique, or even dusting cover ring can be saved
Section；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 corresponds magnetic iron ore, coarse grain intergrowth and thin mud.It, not only can be in assorting room
A large amount of thin muds in magnetic iron ore are sloughed, and also achieve sorting classifying, mineral processing circuit can be shortened on the whole.
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 (3)
1. a kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying characterized by comprising pan feeding
Pipe, cylinder, overflow pipe, sorting chamber, electromagnetic coil, magnetic material drainage conduit and intergrowth drainage conduit；
Wherein, cyclone cylinder one end connects a sorting chamber top, and the sorting chamber is in tapered shape, and bottom center hollows out,
And magnetic material drainage conduit is fixedly installed, the magnetic material drainage conduit is funnel-shaped, including funnel bowl and bell mouth, bell mouth
Sealing is fixed in the through-hole for being placed in sorting chamber bottom center, and extend out on the outside of sorting chamber, and electromagnetic coil is by that will lead
The tube wall that line is wound in the part that bell mouth is stretched out on the outside of sorting chamber is formed；Cylinder end face center hollows out, and overflow pipe is fixedly installed；
Feeding pipe and intergrowth drainage conduit are tangentially respectively set along outer ledge on the downside of the upside of the outer wall of cylinder and sorting cavity outer wall.
2. the three product axial 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 axial 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.
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| CN201910159334.6A CN109794352A (en) | 2019-03-04 | 2019-03-04 | A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying |
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| CN201910159334.6A CN109794352A (en) | 2019-03-04 | 2019-03-04 | A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422495A (en) * | 2019-09-05 | 2019-11-08 | 天津闪速炼铁技术有限公司 | A kind of industrial furnace magnetic feeding device and charging process |
| CN113666498A (en) * | 2021-08-06 | 2021-11-19 | 同济大学 | Ferrocyanite separation and kieselguhr recovery device and method for enhanced nitrogen and phosphorus removal system |
| 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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| CN113666498A (en) * | 2021-08-06 | 2021-11-19 | 同济大学 | Ferrocyanite separation and kieselguhr recovery device and method for enhanced nitrogen and phosphorus removal system |
| 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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Application publication date: 20190524 |