CN108745640A - Chute, equipment and method for gradient magnetic gravity centrifugal screening of magnetic minerals - Google Patents
Chute, equipment and method for gradient magnetic gravity centrifugal screening of magnetic minerals Download PDFInfo
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- CN108745640A CN108745640A CN201810613266.1A CN201810613266A CN108745640A CN 108745640 A CN108745640 A CN 108745640A CN 201810613266 A CN201810613266 A CN 201810613266A CN 108745640 A CN108745640 A CN 108745640A
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- 238000012216 screening Methods 0.000 title claims abstract description 111
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 109
- 239000011707 mineral Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005484 gravity Effects 0.000 title abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 11
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 11
- 239000012141 concentrate Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 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
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
- B03B5/626—Helical separators
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
the invention belongs to the technical field of magnetic mineral separation, and relates to a gradient magnetic gravity centrifugal screening chute, equipment and a method for magnetic minerals.
Description
Technical field
The invention belongs to magnetic mineral sorting technology fields, and in particular to a kind of gradient magnetic weight centrifugal screening of magnetic mineral
Chute, device and method.
Background technology
Ore pulp is along normal reselection equipment spiral chute groove face flow process, under the action of centrifugal force and gravity, weight mine
Object is along groove face medial motion, and for light mineral along groove face movement outside, but for magnetic mineral sorting, coarse granule is low-grade
Intergrowth mineral along groove face during gliding, since grade is thicker, suffered by gravity influence more than centrifugal force effect,
To be easier to along groove face medial motion, concentrate product is finally mixed into magnetic mineral to reduce concentrate grade index；
And for fine-graded magnetic mineral, since its grade is thinner, to be easier to along groove face movement outside, and finally with outside groove face
The fine fraction sludge of side is mixed into product from failing and is lost in so as to cause magnetic mineral, reduces the recycling of concentrate product magnetic mineral
Rate.
Fig. 1 is the structural schematic diagram of conventional helical trough apparatus, and Fig. 2 is the groove face schematic diagram of conventional helical chute.It is conventional
In spiral chute reuse adoption process, " heavy mineral " gradual accelerated sedimentation on the inside of the groove face under the effect of gravity, " light mineral " with water
Under viscosity resistance effect between stream, with flow to during the subsiding movement of chute lower part, in flow by under centrifugation force effect, with
Flow gradually to the movement outside of groove face, finally forms mineral zone, the i.e. heavy mineral on the inside of chute groove face on groove face
Band, the light mineral band on the outside of groove face, and intermediate intermediate mineral zone, as shown in Figure 3.
And for the sorting of magnetic iron ore, coarse grained non magnetic ore, since its viscosity resistance between fluid is made
With far smaller than gravity, therefore the movement of coarse grained nonmagnetics is gradually intended on the inside of chute groove face, and finally presss from both sides
It is miscellaneous to enter concentrate product in magnetic product, to reduce the quality of concentrate；And fine grain magnetic mineral, due to its by
Fluid viscous drag effect be more than the influence of its own gravity, be intended to chute groove face movement outside with flow, and final
Mutually mix with non magnetic sludge, into product from failing, so as to cause the loss of magnetic mineral；Also it can mix one in concentrate product
The coarse grained intergrowth mineral in part, intermediate mineral zone can also mix a part of nonmagnetics, entire magnetic mineral chute gravity treatment
The sorting schematic diagram of mineral, as shown in Figure 4.
Based in magnetic mineral screening process, the fine fraction magnetic mineral of appearance is mixed into non magnetic sludge, slightly above
Grade nonmagnetics is mixed into the problems in concentrate, and the application carries out the further wound of targetedly magnetic system design and device structure
Newly, the efficiency of separation and quality of magnetic mineral are improved.
Invention content
The purpose of the present invention is in view of the above problems and insufficient, it is rationally distributed to provide a kind of magnetic system, and for knot
The further design of structure, realizes the efficient separation of magnetic mineral, improves the ladder of the magnetic mineral of the screening quality of magnetic mineral
Spend magnetic weight centrifugal screening chute, device and method.
In order to achieve the above objectives, it is adopted the technical scheme that：
A kind of gradient magnetic weight centrifugal screening chute of magnetic mineral, including：Screen magnetic system comprising along periphery in same polarity
Multigroup magnet unit of arrangement；And spiral chute, with the outside for being located in the screening magnetic system, and in the spiral chute
In the radial direction, the magnetic field intensity that the screening magnetic system acts on spiral chute dissipates decrease from inside to outside, forms radial magnetic field
Gradient；It is spatially spiral line β to take the intersection of the spiral chute groove face and coaxial cylindrical surface α, in the spatially spiral line β
In, the magnetic field intensity of each point is identical at least one helical pitch H.
It further include parllel screening slot；The parllel screening slot is correspondingly arranged at the spiral chute lower part, and described parallel
The groove face width of screening tank is less than the groove face width of the spiral chute；The spiral chute corresponding with the parllel screening slot
Sieve pore is offered on groove face.
The spiral chute in the radial direction, the groove face outer end of the spiral chute is higher than groove face inner end.
The groove face angle of the magnetic line of force and the spiral chute of the screening magnetic system is 0 ~ 30 °.
The screening magnetic system further includes cylindrical matrix；The magnet unit has been uniformly arranged on the cylindrical matrix；Or
The magnet unit is helically laid on the cylindrical matrix, and corresponding with spiral chute.
The magnet unit is permanent magnet or electromagnet.
A kind of gradient magnetic weight centrifugal screening equipment of magnetic mineral, including：Rack；Such as the gradient magnetic weight of above-mentioned magnetic mineral
Centrifugal screening chute is set in the rack；Feed launder, the feed launder are set to the frame top, and with it is described
The top of spiral chute corresponds to；With the multiple ore discharge buckets for being set to the frame lower, each ore discharge bucket corresponds respectively to spiral shell
Revolve the groove face corresponding position of chute.
The upper rack is provided with spiral stream guidance slot, the spiral chute includes first selections and selected section；Positioned at essence
The spiral chute lower part of selections is provided with parllel screening slot；The groove face width of the parllel screening slot is slipped less than the spiral
The groove face width of slot, and offer sieve pore on the spiral chute groove face corresponding with the parllel screening slot.
A kind of gradient magnetic weight centrifugal screening method of magnetic mineral, to utilize the gradient magnetic of above-mentioned magnetic mineral weight screen centrifuge
Optional equipment, the screening technique of the magnetic mineral of progress, specifically includes following steps：
A, according to the category of screening magnetic mineral, the magnetic field intensity or integrated regulation of sectional adjustment screening magnetic system screen magnetic system
Magnetic field intensity；
B, ore pulp is fed by feed launder, magnetic mineral gradually forms magnetic linkage body, and in radial direction under the action of screening magnetic system
Under the action of magnetic field gradient, to spiral chute medial motion；Fine fraction non magnetic ore under the action of the centrifugal, to outside spiral chute
Side moves, and realizes layering；
C, the separation and collection of the mineral of different grades is carried out by ore discharge bucket.
In stepb, parllel screening slot and sieve pore are arranged by the lower semisection in spiral chute so that coarse grain diameter is non magnetic
Mineral and the lean intergrowth mineral of weak magnetic penetrate sieve pore, realize the selected of magnetic mineral.
Using above-mentioned technical proposal, acquired advantageous effect is：
Overall construction design of the present invention is reasonable, by screening the setting of magnetic system, in conjunction with the improvement of the structure of spiral chute so that
The screening efficiency higher of magnetic mineral, and the screening quality of magnetic mineral has obtained effective guarantee, not only avoids magnetism
The loss for being mingled with the non magnetic ore of coarse grain diameter in mineral, also avoiding fine fraction magnetic mineral, to improve the matter of screening
Amount and yield.
The design of the screening magnetic system of the application can form radial magnetic field gradient on spiral chute, ensure magnetism
Mineral quickly agglomerate into taper magnetic linkage body, and inwardly move so that the mineral zone on spiral chute divides more clear high
Effect, in addition, regional adjustment may be implemented in the screening magnetic system of the application, magnetic field intensity, can also realize global magnetic field intensity
Consistency adjustment, can realize the further exploration of screening technology.
The structure design of the spiral chute of the application, by the way that parllel screening slot is arranged so that original insurmountable thick
The screening of grain size non magnetic ore and the screening of the intergrowth mineral of weak magnetic, are addressed, with cooperateing with for screening magnetic system
Effect, to ensure that mineral screen the multiple promotion of quality, efficiency and yield.
Description of the drawings
Fig. 1 is the structural schematic diagram of conventional helical trough apparatus.
Fig. 2 is the groove face schematic diagram of conventional helical chute.
Fig. 3 is conventional helical chute sorting mineral flow regime schematic diagram.
Fig. 4 is conventional helical sluicing mineral distribution schematic diagram.
Fig. 5 is the Distribution of Magnetic Field schematic diagram of the screening magnetic system of the present invention.
Fig. 6 is motion state schematic diagram of the magnetic mineral of the present invention under magnetic fields.
Fig. 7 is the structural schematic diagram in spiral distribution of magnetic system unit in the screening magnetic system of the present invention.
Fig. 8 is the structural schematic diagram of the spatially spiral line β coaxial with screening magnetic system.
Fig. 9 is distribution schematic diagram of the sorting mined material in spiral chute under magnetic fields in the present invention.
Figure 10 is the structural schematic diagram of spiral chute and parllel screening slot.
Figure 11 is distributed architecture schematic diagram of the sorting mined material in the groove body of Figure 10.
Figure 12 is the structural schematic diagram of the gradient magnetic weight centrifugal screening equipment of magnetic mineral of the present invention.
Serial number in figure：100 be rack, 200 be spiral chute, 201 be spiral stream guidance slot, 202 be just selections, 203 be essence
Selections, 300 be feed launder, 400 be ore discharge bucket, 500 be screening magnetic system, 501 be cylindrical matrix, 502 be magnet unit, 503 be
Parllel screening slot, 504 be sieve pore, 601 attach most importance to mineral zone, 602 be intermediate mineral zone, 603 be light mineral band, 604 be magnetic iron ore
Object, 605 be gangue mineral, 606 be intergrowth mineral.
Specific implementation mode
It elaborates to the specific implementation mode of the present invention below in conjunction with attached drawing.
Referring to Fig. 5-Figure 12, a kind of gradient magnetic weight centrifugal screening chute of magnetic mineral of the present invention, including screening magnetic system 500
With spiral chute 200, screening magnetic system 500 includes multigroup magnet unit 502 in same polarity arrangement along periphery, magnetic
Unit 502 is electromagnet or permanent magnet；Its spiral chute 200 screens the outside of magnetic system with being located in, and in spiral chute
200 in the radial direction, and the magnetic field intensity that screening magnetic system 500 acts on spiral chute 200 dissipates decrease from inside to outside, forms diameter
To magnetic field gradient；It is spatially spiral line β to take spiral chute groove face and the intersection of coaxial cylindrical surface α, in spatially spiral line β,
The magnetic field intensity of each point is identical at least one helical pitch H.
For the explanation of the following several screening magnetic system arrangement forms of the progress of screening magnetic system in the present embodiment, magnetic is screened
System the first form be：Permanent magnet is uniformly arranged along a cylindrical matrix in same polarity so that is with the axis of the cylindrical matrix
Center, it is arbitrarily identical as the magnetic field intensity at any point on the cylindrical surface of the cylindrical matrix coaxial line in space, and along cylinder base
Body magnetic field gradually diverging decaying outward in the radial direction, i.e., magnetic field intensity is identical on same cylindrical surface in space, magnetic field gradient
It is zero, and the magnetic field intensity on different peripheries gradually enhances with the reduction of cylindrical surface radial diameter, forms radial magnetic field
Gradient.
Its second of form is：Since the useful effect space of screening magnetic system is on the basis of the mineral that spiral chute carries
, therefore the corresponding magnetic field of screening magnetic system can also be formed only in the corresponding region of spiral chute, i.e. permanent magnet can be equal
It is even to be laid in cylindrical matrix surface, can also be by the permanent magnet on cylindrical matrix along helical arrangement, and the spiral chute corresponds to.
Its third form is：The groove face of spiral chute is not necessarily in radial directions horizontally disposed, caused
There are certain inadaptabilities for " magnetic field intensity is identical on same cylindrical surface " in the first form, therefore it screens the magnetic field of magnetic system
Direction is with parallel with groove face for optimal selection；It, also can be relative to existing within the angle between magnetic direction and groove face is in 30 °
Have and improves the efficiency of separation and effect for technology；That is, it is sky to take the intersection of spiral chute groove face and coaxial cylindrical surface α
Between helix β, screening magnetic system act on the magnetic field in spiral chute, the magnetic field intensity of any point in spatially spiral line β
It is identical, or subsection setup is carried out to spatially spiral line β, the magnetic field intensity of the upper each points of at least one helical pitch H is identical, logical
The polarity for crossing different sections is identical but the arrangement of the different magnetic system of magnetic field intensity, realizes the adjustment and optimization of screening technology.
With the structure design of screening magnetic system, magnetic field is on the direction for being parallel to chute groove face, and the magnetic line of force is by the inside of chute
Gradually diverging outward, i.e., magnetic field is decayed in certain gradient on being parallel to groove face direction, and magnetic field is strong on the inside of chute groove face,
It is weak close to magnetic field intensity on the outside of chute, as shown in attached drawing 5 and Fig. 6.Therefore, under the action of gradient magnetic, magnetic mineral（Including
Intergrowth mineral）It is acted on by magnetic force, gradually to chute groove face medial motion；It can realize that fine fraction magnetic mineral is reunited
And taper magnetic linkage body is formed, and to groove face medial movement, be mixed into mud and be lost in so as to avoid fine fraction magnetic mineral.
However, as shown in figure 9, L is chute groove face width, L2 is that magnetic mineral distribution bandwidth L1 is that distribution of heavy minerals is wide
Degree still has part nonmagnetics to be mingled in magnetic material distribution bandwidth range, in heavy mineral band range, is distributed with a large amount of
Intergrowth mineral, this will directly reduce the quality of magnetic material concentrate.
Therefore by the way that parllel screening slot 503 is arranged, parllel screening slot 503 is correspondingly arranged at 200 lower part of spiral chute, and flat
The groove face width of row screening tank 503 is less than the groove face width of spiral chute；On spiral chute groove face corresponding with parllel screening slot
Sieve pore 504 is offered, parllel screening slot both sides ratio is connect with spiral chute slot bottom, forms sealing screening space.
In screening process, magnetic mineral forms magnetic coagulation body on spiral chute compass screen surface, and size is far longer than sieve pore
Size, to constantly roll along compass screen surface downslide, and nonmagnetics can not form magnetic coagulation body, during gliding along sieve
It constantly sieves, is greatly reduced so that the nonmagnetics in magnetic product is mingled with, to improve the quality of magnetic product thoroughly.
In order to avoid magnetic mineral is affected by centrifugal force to movement on the outside of spiral chute, mineral zone is caused to divide unknown
Really, the groove face of spiral chute is inclined to set, i.e., spiral chute in the radial direction, the groove face outer end of spiral chute is higher than slot
Face inner end.At this point, the magnetic line of force of screening magnetic system corresponding with spiral chute and the groove face angle of spiral chute are 0 ~ 30 °.
Disclosed herein as well is a kind of gradient magnetic of magnetic mineral weight centrifugal screening equipment, including rack 100, such as above-mentioned reality
Apply gradient magnetic weight centrifugal screening chute, feed launder 300 and the multiple ore discharge buckets for being set to frame lower of magnetic mineral in example
400, the gradient magnetic weight centrifugal screening chute of magnetic mineral is set in rack, and feed launder is set to frame top, and and spiral
The top of chute corresponds to；Each ore discharge bucket corresponds respectively to the groove face corresponding position of spiral chute.
Upper rack is provided with spiral by carrying out sectional design to spiral chute according to the practical situation of screening
Diversion trench, spiral stream guidance slot can be a part for spiral chute, but its middle part is not provided with magnetic field, can also be separately provided
Spiral stream guidance slot；And spiral chute is divided into just selections and selected section, the spiral chute lower part of first selections is not provided with parllel screening
Slot is only used for realizing the reunion of fine fraction magnetic mineral and interior shifting, is provided in the spiral chute lower part positioned at selected section parallel
Screening tank；The groove face width of parllel screening slot is less than the groove face width of spiral chute, and spiral corresponding with parllel screening slot is slipped
Sieve pore is offered on slot groove face, to realize the screening of non magnetic ore and intergrowth mineral on the inside of spiral chute, is improved
The quality of the magnetic mineral of screening.
Its ore pulp is from after being fed the feed launder at the top of equipment, from the screening process of spiral stream guidance slot, mineral gravity, from
Under the effect of the compound force fields such as mental and physical efforts, viscosity resistance and ramp pressure, ore pulp is tentatively completed to divide band；When ore pulp passes through primary election
Section during, with water movement to chute outer rim fine fraction magnetic mineral under the influence of a magnetic field, gradually move to chute
The inner edge of groove face, and form the magnetic linkage body of reunion；Ore pulp is multiple in this magnetic field, screening, flow field etc. during by selected section
Under the action of closing field, fine grained non magnetic ore is constantly thrown to the outer rim of spiral chute, coarse grained non magnetic ore and
The lean intergrowth mineral of weak magnetic constantly sieve thoroughly, so that the quality of magnetic product is constantly promoted.
The present embodiment also discloses a kind of gradient magnetic weight centrifugal screening method of magnetic mineral, to utilize above-mentioned magnetic mineral
Gradient magnetic weight centrifugal screening equipment, the screening technique of the magnetic mineral of progress specifically includes following steps：
A, according to the category of screening magnetic mineral, the magnetic field intensity or integrated regulation of sectional adjustment screening magnetic system screen magnetic system
Magnetic field intensity；
B, ore pulp is fed by feed launder, magnetic mineral gradually forms magnetic linkage body, and in radial direction under the action of screening magnetic system
Under the action of magnetic field gradient, to spiral chute medial motion；Fine fraction non magnetic ore under the action of the centrifugal, to outside spiral chute
Side moves, and realizes layering；
C, the separation and collection of the mineral of different grades is carried out by ore discharge bucket.
In stepb, parllel screening slot and sieve pore are arranged by the lower semisection in spiral chute so that coarse grain diameter is non magnetic
Mineral and the lean intergrowth mineral of weak magnetic penetrate sieve pore, realize the selected of magnetic mineral.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of gradient magnetic weight centrifugal screening chute of magnetic mineral, which is characterized in that including：
Screen magnetic system comprising along periphery in multigroup magnet unit of same polarity arrangement；
And spiral chute, be located in it is described screening magnetic system outside, and the spiral chute in the radial direction, it is described
The magnetic field intensity that screening magnetic system acts on spiral chute dissipates decrease from inside to outside, forms radial magnetic field gradient；
It is spatially spiral line β to take the intersection of the spiral chute groove face and coaxial cylindrical surface α, in the spatially spiral line β,
The magnetic field intensity of each point is identical at least one helical pitch H.
2. the gradient magnetic weight centrifugal screening chute of magnetic mineral according to claim 1, which is characterized in that further include parallel
Screening tank；
The parllel screening slot is correspondingly arranged at the spiral chute lower part, and the groove face width of the parllel screening slot is less than institute
State the groove face width of spiral chute；
Sieve pore is offered on the spiral chute groove face corresponding with the parllel screening slot.
3. the gradient magnetic weight centrifugal screening chute of magnetic mineral according to claim 1 or 2, which is characterized in that described
In the radial direction, the groove face outer end of the spiral chute is higher than groove face inner end to spiral chute.
4. the gradient magnetic weight centrifugal screening chute of magnetic mineral according to claim 1, which is characterized in that the screening magnetic
The magnetic line of force of system and the groove face angle of the spiral chute are 0 ~ 30 °.
5. the gradient magnetic weight centrifugal screening chute of magnetic mineral according to claim 1, which is characterized in that the screening magnetic
System further includes cylindrical matrix；
The magnet unit has been uniformly arranged on the cylindrical matrix；
Or the magnet unit is helically laid on the cylindrical matrix, and it is corresponding with spiral chute.
6. the gradient magnetic weight centrifugal screening chute of magnetic mineral according to claim 1, which is characterized in that described magnetic single
Member is permanent magnet or electromagnet.
7. a kind of gradient magnetic weight centrifugal screening equipment of magnetic mineral, which is characterized in that including：
Rack；
The gradient magnetic weight centrifugal screening chute of magnetic mineral as described in claim 1-6 is any, is set in the rack；
Feed launder, the feed launder are set to the frame top, and corresponding with the top of the spiral chute；
With the multiple ore discharge buckets for being set to the frame lower, each ore discharge bucket corresponds respectively to the groove face of the spiral chute
Corresponding position.
8. the gradient magnetic weight centrifugal screening equipment of magnetic mineral according to claim 7, which is characterized in that in the rack
Top is provided with spiral stream guidance slot, and the spiral chute includes first selections and selected section；
The spiral chute lower part positioned at selected section is provided with parllel screening slot；
The groove face width of the parllel screening slot is less than the groove face width of the spiral chute, and corresponding with the parllel screening slot
The spiral chute groove face on offer sieve pore.
9. a kind of gradient magnetic weight centrifugal screening method of magnetic mineral, which is characterized in that for using described in claim 7 or 8
The gradient magnetic weight centrifugal screening equipment of magnetic mineral, the screening technique of the magnetic mineral of progress specifically include following steps：
A, according to the category of screening magnetic mineral, the magnetic field intensity or integrated regulation of sectional adjustment screening magnetic system screen magnetic system
Magnetic field intensity；
B, ore pulp is fed by feed launder, magnetic mineral gradually forms magnetic linkage body, and in radial direction under the action of screening magnetic system
Under the action of magnetic field gradient, to spiral chute medial motion；Fine fraction non magnetic ore under the action of the centrifugal, to outside spiral chute
Side moves, and realizes layering；
C, the separation and collection of the mineral of different grades is carried out by ore discharge bucket.
10. the gradient magnetic weight centrifugal screening method of magnetic mineral according to claim 9, which is characterized in that in step b
In, parllel screening slot and sieve pore is arranged in the lower semisection passed through in spiral chute so that coarse grain diameter non magnetic ore and weak magnetic
Lean intergrowth mineral penetrate sieve pore, realize the selected of magnetic mineral.
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| CN201810613266.1A CN108745640B (en) | 2018-06-14 | 2018-06-14 | Gradient magnetic gravity centrifugal screening chute, equipment and method for magnetic minerals |
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| CN201810613266.1A CN108745640B (en) | 2018-06-14 | 2018-06-14 | Gradient magnetic gravity centrifugal screening chute, equipment and method for magnetic minerals |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252506A (en) * | 2019-07-03 | 2019-09-20 | 中国恩菲工程技术有限公司 | Sorting mineral equipment based on resultant field |
| CN110302890A (en) * | 2019-07-03 | 2019-10-08 | 中国恩菲工程技术有限公司 | Chute separator, method and storage medium and electronic equipment based on Image Acquisition |
| CN110871138A (en) * | 2019-12-11 | 2020-03-10 | 成都市宏智达科技有限公司 | A choice device for fine grain weak magnetism magnetic mineral |
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