CN105689116B - A kind of novel magnetic separation mechanism - Google Patents

A kind of novel magnetic separation mechanism Download PDF

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Publication number
CN105689116B
CN105689116B CN201610169241.8A CN201610169241A CN105689116B CN 105689116 B CN105689116 B CN 105689116B CN 201610169241 A CN201610169241 A CN 201610169241A CN 105689116 B CN105689116 B CN 105689116B
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magnetic
magnetic separation
belt
concentrate
roller
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CN105689116A (en
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何亚民
魏勇
徐智平
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Chengdu Leejun Industrial Co Ltd
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Chengdu Leejun Industrial Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/16Magnetic separation acting directly on the substance being separated with material carriers in the form of belts

Abstract

The present invention relates to the sorting units suitable for the industries such as metallurgy, mine, chemical industry magnetic mineral after milling equipment grinding, the magnetic separation of the especially suitable miberal powder after high-pressure roller mill squeezes, specifically a kind of novel magnetic separation mechanism, including magnetic separation belt, belt conveyor, magnetic system, belt conveyor is located at below magnetic separation belt, magnetic system is located on the inside of magnetic separation belt and covers the output terminal of belt conveyor, and the strong and weak alternately variation of magnetic field intensity of magnetic system makes to treat ore dressing under magnetic force and gravity to rise and fall repeatedly.The novel magnetic separation mechanism that the present invention is capable of providing a kind of simple in structure, wide adaptation range, not only can guarantee finished product ore deposit grade but also can improve the rate of recovery, the sorting of concentrate and chats can be realized by way of mineral is made to rise and fall repeatedly, is conducive to improve the precision of magnetic separation and the taste of finished product ore deposit.

Description

A kind of novel magnetic separation mechanism
Technical field
The present invention relates to the sorting dresses suitable for the industries such as metallurgy, mine, chemical industry magnetic mineral after milling equipment grinding It puts, the magnetic separation of the especially suitable miberal powder after high-pressure roller mill squeezes, is specifically a kind of novel magnetic separation mechanism.
Background technology
China's iron ore deposit is relatively abundant, but lean ore is more, rich ore is few, thus nearly all iron ore will by sort with Improve the grade and utilization rate of raw material.When being sorted using dry-type magnetic extractor, since ore disseminated grain size is uneven, in order to obtain Higher grade is usually crushed by minimum disseminated grain size, so that the iron mineral that a part reaches monomer dissociation generates not It is necessary overground, cause the loss of metal and the increase of energy consumption;Simultaneously as valuable mineral is overground serious, although weak magnetic operation It is preferable to recycle iron ore effect, but to be mingled with phenomenon serious for gangue, in order to upgrade, has to reduce the rate of recovery, so as to cause Weak-magnetism ore grade is higher.In other words, existing dry-type magnetic extractor can not solve the contradiction between finished product ore deposit grade and the rate of recovery.
The content of the invention
The goal of the invention of the present invention is:In view of the above problems, provide a kind of simple in structure, wide adaptation range, Not only it can guarantee finished product ore deposit grade but also the novel magnetic separation mechanism of the rate of recovery can be improved, it can be real by way of mineral is made to rise and fall repeatedly The sorting of existing concentrate and chats is conducive to improve precision and the taste of magnetic separation.
Technical scheme is as follows:
The invention discloses a kind of novel magnetic separation mechanisms, and including magnetic separation belt, belt conveyor, magnetic system, belt conveyor is located at Below magnetic separation belt, magnetic system is located on the inside of magnetic separation belt lower belt and covers the output terminal of belt conveyor, the magnetic field intensity of magnetic system Alternately variation makes to treat ore dressing under magnetic force and gravity to rise and fall repeatedly power.
In said structure, according to the speed of service, the magnetic for treating the different magnetic characteristic setting belt conveyor of ore dressing and magnetic separation belt The magnetic field intensity and width of strong magnetic area and weak magnetic area in system.In mineral after crushing, concentrate is mostly strongly magnetic material, has grain Spend it is small, average grain diameter be less than 15mm the characteristics of;Chats is mostly weakly magnetic material, and granularity is larger, average grain diameter 15-40mm it Between;Tailing is without magnetic or magnetic faint miberal powder material.Magnetic material is taken to magnetic system magnetic separation model with belt conveyor It encloses, concentrate is adsorbed to magnetic separation belt surface in strong magnetic area and enters weak magnetic area with magnetic separation belt, and chats then continues with conveying skin Mine mouth during band operation enters, realizes the sorting of concentrate and chats.At the same time, weak magnetic is entered by the concentrate that magnetic system strong magnetic area picks up Qu Hou, the big concentrate of granularity overcome magnetic force so that next strong magnetic area is dropped down onto on belt conveyor and be transported under parabolic manner first It is picked up again, the small concentrate of granularity overcomes magnetic force to fall with parabolic manner and in dropping process after the big concentrate of granularity It is picked up again by next strong magnetic area.Multiple with magnetic system power field regions alternately changes, and concentrate is then picked up-fallen repeatedly, Concentrate obtains repeatedly shaking off the non-magnetic material being mingled with during rising and falling herein, effectively solves disk pack and wraps up in and magnetic clutch is miscellaneous asks Topic, ensures the taste of concentrate;Simultaneously as the difference of granularity of concentrate, for the small concentrate of granularity closer to belt surface, granularity is big The small concentrate surface of granularity is then covered in, layering of the concentrate on magnetic separation belt is realized, and successively departs from when into concentrate mouth And realize the layering of the thickness of concentrate.
The magnetic system includes the strong magnetic area and weak magnetic area that are arranged alternately, and strong magnetic area captures all concentrate, and weak magnetic area is with parabolic Line mode falls the big concentrate of granularity.Magnetic system is divided into the strong magnetic area being arranged alternately and weak magnetic area can effectively realize big grain The process of rising and falling repeatedly of concentrate is spent, solves the problems, such as that concentrate disk pack is wrapped up in or magnetic clutch is miscellaneous, while realizes that concentrate exists by fineness Sort the layering on belt.
Carrying roller is provided between the magnetic system, which is used to support magnetic separation belt.The carrying roller can effectively adjust magnetic Throwing angle when selecting the levelness of belt, and then controlling the concentrate to dish out with parabolic manner, can effectively improve magnetic separation Precision reduces the width of strong magnetic area and weak magnetic area, such as:It is dished out when concentrate with horizontal direction and picks up whereabouts to by next field regions Distance compared to α angles dish out mineral distance of fall it is less, α angles be dish out the angle of direction and horizontal direction can be with For 15 °, 20 °, 30 °, 40 °, 45 ° or with the angle in the range of two corners degree of taking up an official post.The carrying roller by adjusting belt level Degree is realized and improves the strong and weak alternately variation density of magnetic system, improves concentrate and repeat the number to rise and fall.
The magnetic separation belt is installed by a pair of of roller at its both ends, and one of roller is magnetic roller.Above-mentioned magnetic roller is set Putting makes the upper belt of magnetic separation belt can be used in transporting the separation for realizing magnetic material and non-magnetic material at miberal powder and left magnetic roller, So as to reduce load when magnetic system sorts, equipment energy consumption is effectively reduced, the efficiency of magnetic separation and concentrate taste are improved, after broken Mineral from magnetic separation belt enter magnetic roller magnetic separation scope when, magnetic material magnetic separation belt surface is attracted under magneticaction and Non-magnetic material is then thrown into tailing mouth under the action of the centrifugal force, realizes sorting for magnetic material and non-magnetic material;With magnetic Belt is selected to move on, due to being equipped with demagnetizing region between magnetic roller and magnetic system.
The magnetic field intensity of the magnetic roller is not less than 3000 Gausses, and the magnetic field intensity of the magnetic system is 100-3000 Gausses, The disk pack angle of the magnetic roller is 180-240 °.The setting of above-mentioned parameter can need to adjust its parameter according to different minerals, on State screening of the parameter especially suitable for the miberal powder of iron ore.
Dust exhaust apparatus is provided at the magnetic roller, which is used to absorb what is generated when tailing is spilled at magnetic roller Dust.Said structure at left magnetic roller can absorb dust during throwing tail, additionally it is possible to solve dust and be wrapped on concentrate The problem of not easily to fall off.
The average field strength of the magnetic system is arranged along magnetic separation direction stairway degression.Stairway degression is arranged in said structure Magnetic field intensity can effectively enable concentrate according to granularity and mineral power affected by magnetic fields significantly in magnetic separation belt Higher slice is conducive to magnetic separation and solves the problems, such as that disk pack is wrapped up in miscellaneous with magnetic clutch, improves the taste of concentrate.
Demagnetizing region is equipped between magnetic system and magnetic roller, which is used to make to drop down onto under concentrate and chats after magnetic roller magnetic separation On belt conveyor.
Carrying roller is provided on the inside of the upper belt of magnetic separation belt.The carrying roller supports the inside with magnetic separation belt upper belt, can make Upper belt keeps horizontal, prevents miberal powder from assembling in recess, influences magnetic separation effect, in addition, hard magnetic material can be used in carrying roller, such as Iron, steel or alloy in the magnetic field range of carrying roller magnetic system in the bottom, may be magnetized by the magnetic field of magnetic system, work as carrying roller After being magnetized, which can carry out premagnetization to the magnetic miberal powder above it, and then magnetic miberal powder is made to be enriched on epithelium zone face;From And ensure magnetic separation belt when throwing tail, reduce the probability that magnetic miberal powder is spilled over.
By adjusting mechanism connection frame, which is used to lift the magnetic system magnetic system.The setting energy of the adjusting mechanism It is enough effectively to adjust position of the magnetic system compared with lower belt, and then can effectively control the magnetic strength on magnetic separation belt hypodermis zone face Intensity is answered, so as to fulfill the adjustable effect in magnetic field, ensures that this magnetic separation mechanism can be suitable for more and granularity magnetic ore deposit Magnetic separation ensures the taste of concentrate magneticly elected.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
1. the structure of mechanism is simple, easy to assembly, concentrate can be made to rise and fall repeatedly, be wrapped up in and magnetic so as to effectively solve disk pack The problem of being mingled with simultaneously promotes concentrate taste, in the process concentrate is enable substantially to be layered and reaches grading purpose.
2. mechanism, by the separation of magnetic material and non-magnetic material, tailing will not be carried out repeating sorting, can be effective Magnetic separation load is reduced, reduces equipment energy consumption.
The mode being combined 3. the strong and weak alternating of the magnetic system arrangement of mechanism, i.e. magnetic field plus gradient are successively decreased, can be according to ore deposit Granularity and the magnetic strength alternating of object realize that the concentrate of mineral in the longitudinal direction to chats is layered;Effective solution disk pack is wrapped up in and magnetic The problem of being mingled with;Successively decrease arrangement with reference to magnetic gradient, can realize the magnetic separation direction along magnetic system, strong magnetic material and small particle Material is closer to magnetic separation belt, and weak magnetic material and large granular materials are further from magnetic separation belt, realizes the level of concentrate and chats more Bonus point is bright.
4. carrying roller arrangement, i.e. carrying roller are arranged between adjacent magnet, the magnetic field between adjacent magnets can be made strong and weak Drop is more obvious.Parabolic motion track when adjustment material changes between strong and weak magnetic region;Further promote point of material Layer.When i.e. adjustment material enters weak magnetic area from strong magnetic area, the throwing angle of material;Meanwhile also adjustment material is entered by weak magnetic area During strong magnetic area, the sucking angle of material.
Description of the drawings
Fig. 1 is the structure chart of the utility model magnetic separation mechanism;
Fig. 2 is the magnetic separation figure of the utility model magnetic separation mechanism.
It is marked in figure:1- feed inlets, the first carrying rollers of 2-, 3- dust exhaust apparatuses, 4- drives, 5- magnetic separation belts, 6- magnetic systems, 61- strong magnetic areas, 62- weak magnetic areas, 601- fine fraction concentrate, 602- coarse fraction concentrate, 603- weakly magnetic minerals, 7- second rollers, 8- Magnetic roller, 9- belt conveyors, 10- throw tail mouth, 11- concentrate mouths, mine mouth in 12-, 13- adjusting mechanisms.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Specific embodiment 1:
As illustrated in fig. 1 and 2, a kind of novel magnetic separation mechanism of the invention, including magnetic separation belt 5, belt conveyor 9, magnetic system 6, Belt conveyor 9 is located at 5 lower section of magnetic separation belt and the two is at a distance of 30-50mm, and magnetic system 6 is arranged at the lower belt in magnetic separation belt 5 The top of inside, i.e. 5 lower belt of magnetic separation belt, magnetic system 6 cover the output terminal of belt conveyor 9, and the magnetic field intensity of magnetic system 6 is strong and weak to be handed over Make to treat that ore dressing repeats to rise and fall under magnetic force and gravity under double action for variation;Magnetic system 6 includes the strong magnetic area being arranged alternately 61 and weak magnetic area 62, weak magnetic area 62 is used to treat ore dressing with parabolic manner whereabouts, and ore dressing is treated in strong magnetic area 61 for picking up this.When treating When ore dressing is for iron ore or with the mineral for being similar to iron ore magnetic characteristic, the travelling speed of belt conveyor 9 and magnetic separation belt 5 is controlled It is transported from right to left for v, adjusts the magnetic field intensity 400-3000 Gausses of strong magnetic area 61 and weak magnetic area 62 in magnetic system 6, set magnetic The width for being strong magnetic area 61 in 6 is 20-40mm, the width of weak magnetic area 62 is 30-50mm;The miberal powder of mineral after crushed often wraps Average grain diameter is included less than the concentrate of 15mm, the chats and tailing that average grain diameter is 15-40mm, wherein concentrate be strongly magnetic material, Chats is weakly magnetic material, weakly magnetic mineral 603 is without magnetic or micromagnetism material;In the rougher process of concentrate, due to Granularity of concentrate and vary in weight, fine fraction concentrate 601 and coarse fraction concentrate 602 into behind weak magnetic area 62 successively with parabolic manner The mode of whereabouts due to the setting of 62 width of weak magnetic area, is inhaled by next strong magnetic area 61 again in 601 dropping process of fine fraction concentrate It rises, drop down onto on belt conveyor 9 and be delivered to next strong magnetic area 61 under coarse fraction concentrate 602 and picked up;Weak magnetic area 62 is provided with support Roller, the carrying roller are used to support magnetic separation belt 5 and adjust the levelness of magnetic separation belt 5 simultaneously, control coarse fraction concentrate 602 or particulate Throwing angle when grade concentrate 601 is dished out with parabolic manner, such as:When fine fraction concentrate 601 or coarse fraction concentrate 602 are with water Square to when dishing out, picked up after distance of fall s by next field regions;When fine fraction concentrate 601 or coarse fraction concentrate 602 are with α It when angle is dished out, is picked up after distance of fall s ' by next field regions, then s ' is more than s, and α angles are dish out direction and horizontal direction Angle can be 15 °, 20 °, 30 °, 40 °, 45 ° or with the unspecified angle in the range of two corners degree of taking up an official post, by adjusting belt Levelness, the strong and weak alternately variation density of magnetic system 6 can be improved, miberal powder is improved and repeat the number to rise and fall, improve the effect of mineral layering Rate;Carrying roller is cylindric made of magnetic shielding material.Effect using magnetic shielding material is two neighboring strong magnetic area in order to prevent The influence of 61 pairs of weak magnetic areas 62 in the middle part of it, the changes of magnetic field for making strong and weak field regions is clearly more demarcated, improves the efficiency and effect of magnetic separation Fruit reduces the debugging difficulty of magnetic system 6.
Specific embodiment 2:
As illustrated in fig. 1 and 2:
A kind of novel magnetic separation mechanism of the present invention, including feed inlet 1, the first carrying roller 2, dust exhaust apparatus 3, magnetic separation belt 5, magnetic It is 6, strong magnetic area 61, weak magnetic area 62, second roller 7, belt conveyor 9, throwing tail mouth 10, concentrate mouth 11, middle mine mouth 12.
Magnetic separation belt 5 is mounted on the roller at 5 both ends of magnetic separation belt, and left side roller is drive 4, right side roller For magnetic roller 8;Belt conveyor 9 is located at 5 lower section 30-50mm of magnetic separation belt, and belt conveyor 9 is mounted on the roller at its both ends, One side is driving wheel, opposite side is driven wheel;Magnetic system 6 is located on the inside of the lower belt of magnetic separation belt 5 and covers belt conveyor 9 Output terminal, magnetic separation belt 5 upper belt inside set the first carrying roller 2.
Demagnetizing region is equipped between magnetic system and magnetic roller, which is used to make to drop down onto under concentrate and chats after magnetic roller magnetic separation On belt conveyor.
The strong and weak alternately variation of the magnetic field intensity of magnetic system 6 makes to treat that ore dressing repeats to rise and fall under magnetic force and gravity double action;Magnetic Be 6 include the strong magnetic area 61 that is arranged alternately and weak magnetic area 62, fine fraction concentrate 601 and coarse fraction concentrate 602 weak magnetic area 62 with Parabolic manner falls, and is picked up in strong magnetic area 61;The average field strength of magnetic system 6 is arranged along magnetic separation direction stairway degression. Weak magnetic area 62 is provided with second roller 7, which is used to support magnetic separation belt 5 and controls the level of magnetic separation belt 5 Degree, second roller 7 can be cylindric made of magnetic shielding material;Feed inlet 1 is arranged on the upper left side of magnetic separation belt 5, throws tail Mouth 10 is arranged on the upper right side of magnetic separation belt 5, and concentrate mouth 11 is arranged on the lower left of magnetic separation belt 5, and middle mine mouth 12 is arranged on defeated The lower left of belt 9 is sent, dust exhaust apparatus 3 at tail mouth 10 is set throwing, i.e., is provided with to absorb weakly magnetic mineral 603 at magnetic roller 8 The dust exhaust apparatus 3 of the dust generated when being spilled at magnetic roller 8;The magnetic separation mechanism is connected with high-pressure roller mill, magnetic separation mechanism Feed inlet 1 is connected with the discharge port of high-pressure roller mill.
When in use, ore is crushed to contain concentrate of the average grain diameter less than 15mm, put down the present apparatus by high-pressure roller mill Equal grain size includes fine fraction concentrate 601 and coarse fraction concentrate in the chats of 15-40mm and the miberal powder of weakly magnetic mineral 603, concentrate 602, miberal powder enters the feed inlet 1 of magnetic separation mechanism by the discharge port of high-pressure roller mill, and upper belt of the miberal powder through magnetic separation belt 5 is defeated The mineral for the right end of magnetic separation belt 5, not having magnetism and micromagnetism mineral is sent to be thrown into parabolic manner to throw in tail mouth 10, essence Ore deposit and chats in magnetic field intensity for be 180-240 ° not less than 3000 Gausses, disk pack angle 8 magneticaction of magnetic roller under sweep along part It is dropped down onto under weakly magnetic mineral 603 on belt conveyor 9, disk pack angle can also be 190-200 °, 201-210 °, 211-220 ° or 221- 230 °, dust exhaust apparatus 3 discharges mineral and throws the dust that tail generates;Mix the miberal powder of concentrate, chats, weakly magnetic mineral 603 in conveying skin It is conveyed from right to left on band 9, after being delivered to the magnetic separation region for the magnetic system 6 that magnetic field intensity is 100-3000 Gausses, concentrate is in strong magnetic Area 61 is picked up, is fallen in weak magnetic area 62, after repeatedly picking up-falling, between magnetic separation belt 5 and belt conveyor 9 by Up to lower formation fine fraction concentrate layer, coarse fraction concentrate layer, weakly magnetic mineral layer;In the output of belt conveyor 9, coarse fraction essence Ore bed is fallen into due to can not be picked up in 62 dropping process of weak magnetic area in middle mine mouth 12;Fine fraction concentrate layer can be in weak magnetic It is picked up in 62 dropping process of area, fine fraction concentrate layer is delivered to by magnetic separation belt 5 in concentrate mouth 11, and weakly magnetic mineral 603 is along defeated Belt 9 is sent to fall into middle mine mouth 12.
Magnetic separation mechanism is also used as second level magnetic separation mechanism, is used in addition to as above-mentioned first order magnetic separation mechanism Coarse fraction concentrate 602 and weakly magnetic mineral 603 are sorted, when as second level magnetic separation mechanism, the magnetic field intensity of magnetic system 6 is 1000-5000 Gausses.
Carrying roller 2 is provided on the inside of the upper belt of magnetic separation belt 5.The carrying roller 2 supports the inside with 5 upper belt of magnetic separation belt, Upper belt holding can be made horizontal, prevent miberal powder from assembling in recess, magnetic separation effect is influenced, in addition, Hard Magnetic material can be used in carrying roller 2 Material, such as iron, steel or alloy, may be by the magnetic field magnetics of magnetic system 6 in the magnetic field range of the carrying roller 2 magnetic system 6 in the bottom Change, after carrying roller 2 is magnetized, which can carry out premagnetization to the magnetic miberal powder above it, and then be enriched to magnetic miberal powder On strap surface;So as to ensure magnetic separation belt 5 when throwing tail, the probability that magnetic miberal powder is spilled over is reduced.
By 13 connection frame of adjusting mechanism, which is used to lift the magnetic system magnetic system 2.The adjusting mechanism 13 Setting can effectively adjust position of the magnetic system 6 compared with lower belt, and then can effectively control 5 hypodermis zone face of magnetic separation belt On magnetic induction intensity, so as to fulfill the adjustable effect in magnetic field, ensure that this magnetic separation mechanism can be suitable for more and granularity Magnetic ore deposit magnetic separation, ensure the taste of concentrate magneticly elected.
Specific embodiment 3:
As shown in Figure 2:
Magnetic selection method based on a kind of strong and weak alternately magnetic system of variation of magnetic field intensity is:
Step 1:Miberal powder including fine fraction concentrate 601, coarse fraction concentrate 602 and weakly magnetic mineral 603 is placed in conveying skin On band 9, belt conveyor 9 is by the magnetic separation region of mineral powder transportation to magnetic system 6, and fine fraction concentrate 601 and coarse fraction concentrate 602 are by strong magnetic Area 61 is picked up onto magnetic separation belt 5;
Step 2:Fine fraction concentrate 601 and coarse fraction concentrate 602 enter behind weak magnetic area 62 with magnetic separation belt 5 with parabolic Line mode falls, and is picked up in 601 dropping process of fine fraction concentrate by next strong magnetic area 61, conveying is fallen under coarse fraction concentrate 602 On belt 9 and it is transported to next strong magnetic area 61 and is picked up;
Step 3:Fine fraction concentrate 601 is transported to fine fraction concentrate 601 by magnetic separation belt 5 and exported, coarse fraction concentrate 602 It is exported with weakly magnetic mineral 603 from the output terminal of belt conveyor 9.
The above method is equally applicable to the magnetic separation and layering for the miberal powder for having that granularity is identical but magnetic strength is different.
The type and granularity for the concentrate being selected as needed in above-mentioned magnetic selection method are such as:Iron ore powder, particulate The average grain diameter of grade concentrate 601 is less than 15mm, 602 average grain diameter of coarse fraction concentrate in 15-40mm, according to the mineral of magnetic separation and Granularity after crushing adjusts and sets the width of strong and weak field regions, the speed of the intensity in magnetic field, belt conveyor 9 and magnetic separation belt 5 Degree, after miberal powder enters magnetic separation region, coarse fraction concentrate 602 and fine fraction concentrate 601 are repeated into strong magnetic area 61 and weak magnetic area 62 Lay equal stress on and relapsed-fallen, in the process, fine fraction concentrate 601 can be according to granularity and mineral species in 5 He of magnetic separation belt Fine fraction concentrate layer, coarse fraction concentrate layer and weakly magnetic mineral layer, and fine fraction concentrate are from top to bottom formed between belt conveyor 9 Layer is from top to bottom arranged with its granularity, and the smaller then mineral of granularity are closer to magnetic separation belt 5, and weakly magnetic mineral 603 is then It is covered on belt conveyor 9;When fine fraction concentrate 601, coarse fraction concentrate 602 and weakly magnetic mineral 603 are simultaneously into magnetic system 6 During magnetic separation region, fine fraction concentrate 601, coarse fraction concentrate 602 are picked up in strong magnetic area 61 on magnetic separation belt 5 and with magnetic separation skin Band 5 advances, and into after weak magnetic area 62, coarse fraction concentrate 602 overcomes strong magnetic area 61 prior to fine fraction concentrate 601 greatly due to granularity Magnetic force fall, coarse fraction concentrate 602 in a manner of parabolic under drop down onto on belt conveyor 9, coarse fraction concentrate 602 is with belt conveyor It is picked up again behind the 9 next strong magnetic areas 61 of entrance;Fine fraction concentrate 601 is since granularity is small, when it overcomes magnetic force with parabolic It does not drop down onto down in mode dropping process and is captured on belt conveyor 9 by the magnetic force of next strong magnetic area 61, and picked up again;Due to What the alternating of the strong and weak field regions of magnetic system 6, fine fraction concentrate 601 and coarse fraction concentrate 602 repeated picks up-falls, and makes in strong magnetic area Fine fraction concentrate 601 is closer to the lower surface of magnetic separation belt 5 at 61, and coarse fraction concentrate 602 is covered in fine fraction concentrate layer On;When into 9 output terminal of belt conveyor, coarse fraction concentrate 602 falls into outlet and is no longer picked up, and fine fraction concentrate 601 is still It is so repeated the process for picking up-falling and is exported until reaching fine fraction concentrate 601, and fill the outlet of fine fraction concentrate 601 discharge;Ore deposit Powder this repeat rise and fall during, fine fraction concentrate 601 and coarse fraction concentrate 602 can be made substantially to be divided into fine fraction concentrate Layer and coarse fraction concentrate layer, such mode can effectively solve the problem that disk pack wrap up in magnetic clutch it is miscellaneous the problem of, it is effective to ensure fine fraction essence The taste of ore deposit 601.The strong and weak magnetic of 601 type of fine fraction concentrate and granularity setting that above-mentioned magnetic selection method sorts as needed first The width of place, the intensity in magnetic field, the speed of belt conveyor and magnetic separation belt, after miberal powder enters magnetic separation region, concentrate repeatedly into Enter strong magnetic area and weak magnetic area and picked up-fallen repeatedly, in the process, concentrate can obtain multiple grading machine meeting, effectively be promoted Concentrate grade, and magnetic separation belt lower surface can be covered according to granularity size, realize layering of the concentrate on magnetic separation belt Arrangement.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and All any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of novel magnetic separation mechanism, which is characterized in that including magnetic separation belt(5), belt conveyor(9), magnetic system(6), convey skin Band(9)Positioned at magnetic separation belt(5)Lower section, magnetic system(6)Positioned at magnetic separation belt(5)Lower belt on the inside of and cover belt conveyor(9) Output terminal;The magnetic system(6)Magnetic field intensity it is strong and weak alternately change, it includes the strong magnetic area being arranged alternately(61)And weak magnetic area (62), the magnetic system(6)Average field strength along magnetic separation direction stairway degression arrange;In weak magnetic area(62)It is provided with carrying roller (7), the carrying roller(7)It is used to support magnetic separation belt(5)And control magnetic separation belt(5)Levelness.
2. novel magnetic separation mechanism as described in claim 1, which is characterized in that the magnetic separation belt(5)Pass through the one of its both ends Roller is installed, one of roller is magnetic roller(8).
3. novel magnetic separation mechanism as claimed in claim 2, which is characterized in that the magnetic roller(8)Magnetic field intensity be not less than 3000 Gausses, the magnetic roller(8)Disk pack angle be 180-240 °.
4. novel magnetic separation mechanism as claimed in claim 2, which is characterized in that the magnetic roller(8)Place is provided with dust exhaust apparatus(3) For absorbing from magnetic roller(8)Throw the dust generated during tail in place.
5. novel magnetic separation mechanism as claimed in claim 2, which is characterized in that magnetic system(6)With magnetic roller(8)Between be equipped with de- magnetic Area.
6. novel magnetic separation mechanism as described in claim 1, which is characterized in that the magnetic system(6)Magnetic field intensity be 100- 3000 Gausses.
7. novel magnetic separation mechanism as described in claim 1, which is characterized in that magnetic separation belt(5)Upper belt on the inside of be provided with Carrying roller(2).
8. novel magnetic separation mechanism as described in claim 1, which is characterized in that the magnetic system(6)By adjusting mechanism (13) even Pick frame, which is used to lift the magnetic system(6).
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