CN105689116A - Novel magnetic separation mechanism - Google Patents

Novel magnetic separation mechanism Download PDF

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Publication number
CN105689116A
CN105689116A CN201610169241.8A CN201610169241A CN105689116A CN 105689116 A CN105689116 A CN 105689116A CN 201610169241 A CN201610169241 A CN 201610169241A CN 105689116 A CN105689116 A CN 105689116A
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magnetic
belt
magnetic separation
separation
concentrate
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CN201610169241.8A
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CN105689116B (en
Inventor
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 invention relates to a device applicable to magnetic mineral separation after grinding by a grinder in the industries of metallurgy, mine, chemical and the like, and especially applicable to mineral powder magnetic separation after squeezing by a high-pressure roller mill, in particular to a novel magnetic separation mechanism. The novel magnetic separation mechanism comprises a magnetic separation belt, a conveying belt and magnetic systems, wherein the conveying belt is positioned below the magnetic separation belt; the magnetic systems are positioned on the inner side of the magnetic separation belt and cover the output end of the conveying belt; and due to alternate changes in the magnetic field intensity of the magnetic systems, to-be-separated minerals are repeatedly raised and dropped under the action of magnetism and gravity. The novel magnetic separation mechanism provided by the invention is simple in structure and wide in application range. By adoption of the novel magnetic separation mechanism, not only can the grade of a finished mineral product be guaranteed, but also the recovery rate can be improved, that is, the separation of concentrates and middlings can be realized in such a manner that minerals are repeatedly raised and dropped, so that the precision of magnetic separation and the grade of the finished mineral product can be improved.

Description

A kind of Novel magnetic separation mechanism
Technical field
The present invention relates to industry sorting units of magnetic mineral after milling equipment grinding such as being applicable to metallurgy, mine, chemical industry, the especially suitable magnetic separation of breeze after high-pressure roller mill extrudes, specifically a kind of Novel magnetic separation mechanism。
Background technology
China's iron ore deposit is abundanter, but lean ore is many, rich ore is few, so nearly all iron ore will pass through to sort grade and the utilization rate to improve raw material。When adopting dry-type magnetic extractor to sort, owing to Ore disseminated grain size is uneven, in order to obtain higher grade, generally crush by minimum disseminated grain size, so that the iron mineral that a part reaches monomer dissociation produces unnecessary overground, cause the loss of metal and the increase of energy consumption;Simultaneously as valuable mineral is overground seriously, although weak magnetic operation reclaims iron mine effect better, but stone-like pulse is mingled with phenomenon seriously, in order to upgrade, has to reduce the response rate, thus causing weak-magnetism ore grade higher。In other words, existing dry-type magnetic extractor cannot solve the contradiction between finished product ore deposit grade and the response rate。
Summary of the invention
The goal of the invention of the present invention is in that: for above-mentioned Problems existing, a kind of simple in construction, wide accommodation are provided, not only can guarantee that finished product ore deposit grade but also the Novel magnetic separation mechanism of the response rate can be improved, the sorting making the mode that mineral rise and fall repeatedly realize concentrate and chats can be passed through, be conducive to improving precision and the taste of magnetic separation。
Technical scheme is as follows:
The invention discloses a kind of Novel magnetic separation mechanism, including magnetic separation belt, belt conveyor, magnetic system, belt conveyor is positioned at below magnetic separation belt, magnetic system is positioned under magnetic separation belt inside belt and covers the outfan of belt conveyor, and the magnetic field intensity power alternate of magnetic system makes to treat repeatedly to rise and fall on ore dressing is under magnetic force and action of gravity。
In said structure, according to treating that the different magnetic characteristic of ore dressing sets magnetic field intensity and the width of strong magnetic area and weak magnetic area in belt conveyor and the speed of service of magnetic separation belt, magnetic system。In mineral after crushing, concentrate mostly is strongly magnetic material, has granularity little, the mean diameter feature less than 15mm;Chats mostly is weakly magnetic material, and granularity is relatively big, and mean diameter is between 15-40mm;Mine tailing is do not have magnetic or the faint breeze material of magnetic。Magnetic material is taken to magnetic system magnetic separation scope with belt conveyor, and concentrate is adsorbed to magnetic separation belt surface and enters weak magnetic area with magnetic separation belt in strong magnetic area, and chats then continues to run mine mouth in entrance with belt conveyor, it is achieved the sorting of concentrate and chats。Meanwhile, after the concentrate picked up by magnetic system strong magnetic area enters weak magnetic area, first the concentrate that granularity is big overcomes magnetic force to fall on belt conveyor with parabolic manner and is transported to next strong magnetic area and again picked up, and overcomes magnetic force fall with parabolic manner and again picked up by next strong magnetic area in dropping process in the concentrate that granularity is big after the concentrate that granularity is little。Along with the repeatedly alternate of magnetic system power field regions, concentrate is then repeatedly picked up-is fallen, and obtains repeatedly being shaken off by the non-magnetic material being mingled with in the process that concentrate rises and falls at this, effectively solves disk pack and wraps up in the problem assorted with magnetic clutch, it is ensured that the taste of concentrate;Simultaneously as the difference of granularity of concentrate, the little concentrate of granularity is closer to belt surface, and what granularity was big then covers the concentrate surface that granularity is little, it is achieved concentrate layering on magnetic separation belt, and successively departs from when entering concentrate mouth and realize the layering of the thickness of concentrate。
Described magnetic system includes the strong magnetic area and the weak magnetic area that are arranged alternately, and all concentrate are caught in strong magnetic area, and weak magnetic area falls, with parabolic manner, the concentrate that granularity is big。Magnetic system is divided into the strong magnetic area being arranged alternately and weak magnetic area can be effectively realized the process of repeatedly rising and falling of big granularity concentrate, solve the problem that concentrate disk pack is wrapped up in or magnetic clutch is assorted, realize concentrate by fineness layering on sorting belt simultaneously。
Being provided with carrying roller between described magnetic system, this carrying roller is used for supporting magnetic separation belt。This carrying roller can regulate the levelness of magnetic separation belt effectively, and then control the angle of dishing out when concentrate is dished out with parabolic manner, can effectively improve the precision of magnetic separation, reduce the width of strong magnetic area and weak magnetic area, such as: when concentrate is dished out less compared to the dish out distance of fall of mineral of α angle to being picked up drop by next field regions with horizontal direction, α angle is the dish out angle of direction and horizontal direction can be 15 °, 20 °, 30 °, 40 °, 45 ° or angle to take up an official post in two angular ranges。This carrying roller is by adjusting the levelness of belt, it is achieved improve magnetic system power alternate density, improves the number of times that concentrate repeats to rise and fall。
Described magnetic separation belt is installed by a pair roller at its two ends, and one of them roller is magnetic roller。The setting of above-mentioned magnetic roller makes the upper belt of magnetic separation belt can be used in transport breeze and left magnetic roller place realizes separating of magnetic material and non-magnetic material, thus reducing load when magnetic system sorts, it is effectively reduced equipment energy consumption, improve efficiency and the concentrate taste of magnetic separation, when the mineral after crushing enter magnetic roller magnetic separation scope from magnetic separation belt, magnetic material is attracted to magnetic separation belt surface non-magnetic material under magneticaction and is then thrown into mine tailing mouth under centrifugal action, it is achieved magnetic material sorts with non-magnetic material;Along with magnetic separation belt moves on, owing to being provided with demagnetizing region between magnetic roller and magnetic system。
The magnetic field intensity of described magnetic roller is for being not less than 3000 Gausses, and the magnetic field intensity of described magnetic system is 100-3000 Gauss, and the disk pack angle of described magnetic roller is 180-240 °。Above-mentioned parameter arrange can according to different minerals need adjust its parameter, above-mentioned parameter is particularly well-suited to the screening of the breeze of iron mine。
Described magnetic roller place is provided with dust exhaust apparatus, and this dust exhaust apparatus is for absorbing the dust produced when mine tailing is spilled over from magnetic roller。Said structure, it is possible to dust is absorbed when carrying out throwing tail by left magnetic roller place, additionally it is possible to solve the problem that dust is wrapped on concentrate difficult drop-off。
The average field strength of described magnetic system is arranged along magnetic separation direction stairway degression。The magnetic field intensity that in said structure, stairway degression is arranged can effectively enable concentrate according to granularity and mineral power affected by magnetic fields significantly at magnetic separation belt higher slice, is conducive to magnetic separation and solves disk pack and wrap up in the problem assorted with magnetic clutch, improving the taste of concentrate。
Being provided with demagnetizing region between magnetic system and magnetic roller, this demagnetizing region concentrate after making magnetic roller magnetic separation and chats fall to belt conveyor。
It is provided with carrying roller inside the upper belt of magnetic separation belt。This carrying roller supports the inner side with magnetic separation belt upper belt, upper belt maintenance level can be made, it is prevented that breeze is assembled at recess, affects magnetic separation effect, in addition, carrying roller can adopt hard magnetic material, such as ferrum, steel or alloy, in the magnetic field range of this carrying roller magnetic system in the bottom, may be magnetized by the magnetic field of magnetic system, after carrying roller is magnetized, the magnetic breeze that this carrying roller can be square on which carries out premagnetization, and then makes magnetic breeze be enriched on epithelium zone face;Thus ensureing that magnetic separation belt is when throwing tail, reduces the probability that magnetic breeze is spilled over。
Magnetic system passes through governor motion connection frame, and this governor motion is used for lifting this magnetic system。The setting of this governor motion can effectively regulate the magnetic system position relative to lower belt, and then the magnetic induction that can effectively control under magnetic separation belt on strap surface, thus realizing the adjustable effect in magnetic field, ensure that this magnetic separation mechanism can be applicable to the magnetic separation in more magnetic ore deposit with granularity, it is ensured that the taste of the concentrate magneticly elected。
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1. the simple in construction of mechanism, easy to assembly, it is possible to makes concentrate repeatedly rise and fall, and wraps up in the problem assorted with magnetic clutch thus effectively solving disk pack and promotes concentrate taste, making concentrate be substantially layered in the process and reach grading purpose。
2. mechanism separating by magnetic material and non-magnetic material, mine tailing will not be repeated sorting, can effectively reduce magnetic separation load, reduces equipment energy consumption。
3. the magnetic system arrangement of mechanism, namely magnetic field power alternately adds gradient and successively decreases the mode combined, can according to the granularity of mineral and magnetic power alternately, it is achieved mineral concentrate in the vertical is layered to chats;Effectively solve disk pack and wrap up in the problem assorted with magnetic clutch;Successively decreasing layout in conjunction with the gradient of magnetic, it is possible to realize the magnetic separation direction along magnetic system, strong magnetic material and small particles material are closer to magnetic separation belt, and weak magnetic material and large granular materials are further from magnetic separation belt, it is achieved concentrate is clearly more demarcated with the level of chats。
4. carrying roller arrangement, namely carrying roller is located between adjacent Magnet, it is possible to make the magnetic field power drop between adjacent magnets become apparent from。Adjust parabolic motion track when material changes between strong and weak magnetic region;Promote the layering of material further。When namely adjusting material from entrance weak magnetic area, strong magnetic area, the angle of dishing out of material;Meanwhile, when also adjusting material by entrance strong magnetic area, weak magnetic area, the suction angle of material。
Accompanying drawing explanation
Fig. 1 is the structure chart of this Novel magnetic separation mechanism;
Fig. 2 is the magnetic separation figure of this Novel magnetic separation mechanism。
Labelling in figure: 1-charging aperture, 2-the first carrying roller, 3-dust exhaust apparatus, 4-drive, 5-magnetic separation belt, 6-magnetic system, 61-strong magnetic area, 62-weak magnetic area, 601-fine fraction concentrate, 602-coarse fraction concentrate, 603-weakly magnetic mineral, 7-the second carrying roller, 8-magnetic roller, 9-belt conveyor, 10-throws tail mouth, 11-concentrate mouth, mine mouth in 12-, 13-governor motion。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail。
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Specific embodiment 1:
As illustrated in fig. 1 and 2, a kind of Novel magnetic separation mechanism of the present invention, including magnetic separation belt 5, belt conveyor 9, magnetic system 6, belt conveyor 9 is positioned at below magnetic separation belt 5 and both are at a distance of 30-50mm, magnetic system 6 be arranged at magnetic separation belt 5 lower belt inside, the i.e. top of 5 times belts of magnetic separation belt, the outfan of magnetic system 6 covering belt conveyor 9, the magnetic field intensity power alternate of magnetic system 6 makes to treat that ore dressing repeats to rise and fall under dual function under magnetic force and action of gravity;Magnetic system 6 includes the strong magnetic area 61 and the weak magnetic area 62 that are arranged alternately, and weak magnetic area 62 is for falling to treating that ore dressing, strong magnetic area 61 are used for picking up this and treat ore dressing with parabolic manner。When until ore dressing be iron mine or when there are the mineral being similar to iron mine magnetic characteristic, the travelling speed controlling belt conveyor 9 and magnetic separation belt 5 is that v transports from right to left, adjust the magnetic field intensity 400-3000 Gauss of strong magnetic area 61 and weak magnetic area 62 in magnetic system 6, set the width of strong magnetic area 61 in magnetic system 6 be 20-40mm, weak magnetic area 62 width be 30-50mm;Mineral breeze after crushed frequently includes mean diameter less than chats and mine tailing that the concentrate of 15mm, mean diameter are 15-40mm, and wherein concentrate is strongly magnetic material, chats is that weakly magnetic material, weakly magnetic mineral 603 be not for have magnetic or micromagnetism material;In the rougher process of concentrate, due to granularity of concentrate and varying in weight, fine fraction concentrate 601 and coarse fraction concentrate 602 enter behind weak magnetic area 62 successively in the way of parabolic manner whereabouts, due to the setting of weak magnetic area 62 width, fine fraction concentrate 601 dropping process is picked up by next strong magnetic area 61 again, coarse fraction concentrate 602 falls on belt conveyor 9 and is delivered to next strong magnetic area 61 and picked up;Weak magnetic area 62 is provided with carrying roller, this carrying roller is for supporting magnetic separation belt 5 and regulating the levelness of magnetic separation belt 5 simultaneously, angle of dishing out when control coarse fraction concentrate 602 or fine fraction concentrate 601 are dished out with parabolic manner, such as: when fine fraction concentrate 601 or coarse fraction concentrate 602 are dished out with horizontal direction, picked up by next field regions after its distance of fall s;When fine fraction concentrate 601 or coarse fraction concentrate 602 are dished out with α angle, picked up by next field regions after its distance of fall s ', then s ' is more than s, α angle is the dish out angle of direction and horizontal direction can be 15 °, 20 °, 30 °, 40 °, 45 ° or unspecified angle to take up an official post in two angular ranges, by adjusting the levelness of belt, the strong and weak alternate density of magnetic system 6 can be improved, improve the number of times that breeze repeats to rise and fall, improve the efficiency of mineral layering;Carrying roller be magnetic shielding material make cylindric。The effect adopting magnetic shielding material is to prevent the impact on the weak magnetic area 62 in the middle part of it of adjacent two strong magnetic areas 61, and the changes of magnetic field making strong and weak field regions is more clearly demarcated, improves efficiency and the effect of magnetic separation, 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 charging aperture the 1, first carrying roller 2, dust exhaust apparatus 3, magnetic separation belt 5, magnetic system 6, strong magnetic area 61, weak magnetic area the 62, second carrying roller 7, belt conveyor 9, throws tail mouth 10, concentrate mouth 11, middle mine mouth 12。
Magnetic separation belt 5 is mounted on the roller at magnetic separation belt 5 two ends, and on the left of it, roller is drive 4, right side roller is magnetic roller 8;Belt conveyor 9 is positioned at 30-50mm place below magnetic separation belt 5, and belt conveyor 9 is arranged on the roller at its two ends, and its side is drivewheel, opposite side is driven pulley;Magnetic system 6 be located at magnetic separation belt 5 lower belt inside and cover the outfan of belt conveyor 9, the first carrying roller 2 is set in the inner side of the upper belt of magnetic separation belt 5。
Being provided with demagnetizing region between magnetic system and magnetic roller, this demagnetizing region concentrate after making magnetic roller magnetic separation and chats fall to belt conveyor。
The magnetic field intensity power alternate of magnetic system 6 makes to treat that ore dressing repeats to rise and fall under magnetic force and gravity dual function;Magnetic system 6 includes the strong magnetic area 61 and the weak magnetic area 62 that are arranged alternately, fine fraction concentrate 601 and coarse fraction concentrate 602 and falls with parabolic manner in weak magnetic area 62, 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。Be provided with the second carrying roller 7 in weak magnetic area 62, this second carrying roller 7 for supporting magnetic separation belt 5 and controlling the levelness of magnetic separation belt 5, the second carrying roller 7 can for magnetic shielding material make cylindric;Charging aperture 1 is arranged on the upper left side of magnetic separation belt 5, throw tail mouth 10 and be arranged on the upper right side of magnetic separation belt 5, concentrate mouth 11 is arranged on the lower left of magnetic separation belt 5, middle mine mouth 12 is arranged on the lower left of belt conveyor 9, arranging dust exhaust apparatus 3 throwing tail mouth 10 place, namely magnetic roller 8 place is provided with the dust exhaust apparatus 3 for absorbing the dust produced when weakly magnetic mineral 603 is spilled over from magnetic roller 8;This magnetic separation mechanism is connected to high-pressure roller mill, and the charging aperture 1 of magnetic separation mechanism connects with the discharging opening of high-pressure roller mill。
This device is in use, ore grinding is the concentrate containing mean diameter less than 15mm by high-pressure roller mill, mean diameter is at the chats of 15-40mm, and the breeze of weakly magnetic mineral 603, concentrate includes fine fraction concentrate 601 and coarse fraction concentrate 602, breeze is through the charging aperture 1 of the discharging opening entrance magnetic separation mechanism of high-pressure roller mill, breeze is delivered to the right-hand member of magnetic separation belt 5 through the upper belt of magnetic separation belt 5, the mineral and the micromagnetism mineral that do not have magnetic are thrown in throwing tail mouth 10 with parabolic manner, concentrate and chats in magnetic field intensity for being not less than 3000 Gausses, disk pack angle is sweep along part weakly magnetic mineral 603 to fall on belt conveyor 9 under magnetic roller 8 magneticaction of 180-240 °, disk pack angle can also be 190-200 °, 201-210 °, 211-220 ° or 221-230 °, dust exhaust apparatus 3 is discharged mineral and is thrown the dust that tail produces;Mix concentrate, chats, weakly magnetic mineral 603 breeze carry from right to left on belt conveyor 9, after being delivered to the magnetic separation region of the magnetic system 6 that magnetic field intensity is 100-3000 Gauss, concentrate is picked up in strong magnetic area 61, is fallen in weak magnetic area 62, after repeatedly picking up-falling, between magnetic separation belt 5 and belt conveyor 9, from top to bottom form fine fraction concentrate layer, coarse fraction concentrate layer, weakly magnetic mineral layer;At the output of belt conveyor 9, coarse fraction concentrate layer, owing to cannot be picked up in the dropping process of weak magnetic area 62, falls in middle mine mouth 12;Fine fraction concentrate layer can be picked up in the dropping process of weak magnetic area 62, and fine fraction concentrate layer is delivered in concentrate mouth 11 by magnetic separation belt 5, and weakly magnetic mineral 603 falls in middle mine mouth 12 along belt conveyor 9。
Magnetic separation mechanism is except as above-mentioned first order magnetic separation mechanism, it is also possible to as second level magnetic separation mechanism, is used for sorting coarse fraction concentrate 602 and weakly magnetic mineral 603, and when as second level magnetic separation mechanism, the magnetic field intensity of its magnetic system 6 is 1000-5000 Gauss。
Carrying roller 2 it is provided with inside the upper belt of magnetic separation belt 5。This carrying roller 2 supports the inner side with magnetic separation belt 5 upper belt, upper belt maintenance level can be made, it is prevented that breeze is assembled at recess, affects magnetic separation effect, in addition, carrying roller 2 can adopt hard magnetic material, such as ferrum, steel or alloy, in the magnetic field range of this carrying roller 2 magnetic system 6 in the bottom, may be magnetized by the magnetic field of magnetic system 6, after carrying roller 2 is magnetized, the magnetic breeze that this carrying roller 2 can be square on which carries out premagnetization, and then makes magnetic breeze be enriched on epithelium zone face;Thus ensureing that magnetic separation belt 5 is when throwing tail, reduces the probability that magnetic breeze is spilled over。
Magnetic system 2 is by governor motion 13 connection frame, and this governor motion 13 is used for lifting this magnetic system。The setting of this governor motion 13 can effectively regulate the magnetic system 6 position relative to lower belt, and then can effectively control the magnetic induction on 5 times strap surfaces of magnetic separation belt, thus realizing the adjustable effect in magnetic field, ensure that this magnetic separation mechanism can be applicable to the magnetic separation in more magnetic ore deposit with granularity, it is ensured that the taste of the concentrate magneticly elected。
Specific embodiment 3:
As shown in Figure 2:
Magnetic selection method based on the magnetic system of a kind of magnetic field intensity power alternate is:
Step one: the breeze including fine fraction concentrate 601, coarse fraction concentrate 602 and weakly magnetic mineral 603 is placed on belt conveyor 9, the magnetic separation region of mineral powder transportation to magnetic system 6, fine fraction concentrate 601 and coarse fraction concentrate 602 are picked up on magnetic separation belt 5 by belt conveyor 9 by strong magnetic area 61;
Step 2: fine fraction concentrate 601 and coarse fraction concentrate 602 all fall with parabolic manner after entering weak magnetic area 62 with magnetic separation belt 5, being picked up by next strong magnetic area 61 in fine fraction concentrate 601 dropping process, coarse fraction concentrate 602 drops on belt conveyor 9 and is transported to this next strong magnetic area 61 and picked up;
Step 3: fine fraction concentrate 601 is transported fine fraction concentrate 601 by magnetic separation belt 5 and exports, coarse fraction concentrate 602 and weakly magnetic mineral 603 export from the outfan of belt conveyor 9。
Said method be equally applicable to have granularity is identical but the magnetic separation of breeze that magnetic is strong and weak different and layering。
The type of the concentrate being selected as required in above-mentioned magnetic selection method and granularity be such as: iron mine powder, the mean diameter of its fine fraction concentrate 601 is less than 15mm, its coarse fraction concentrate 602 mean diameter is at 15-40mm, mineral according to magnetic separation and the granularity adjustment after pulverizing also set the width of strong and weak field regions, the intensity in magnetic field, the speed of belt conveyor 9 and magnetic separation belt 5, after breeze enters magnetic separation region, coarse fraction concentrate 602 and fine fraction concentrate 601 repeat to enter strong magnetic area 61 and weak magnetic area 62 and lay equal stress on and relapsed-fallen, in the process, fine fraction concentrate 601 can from top to bottom form fine fraction concentrate layer according to granularity and mineral species between magnetic separation belt 5 and belt conveyor 9, coarse fraction concentrate layer and weakly magnetic mineral layer, and fine fraction concentrate layer from top to bottom arranges with its granularity, the more little then mineral of its granularity are the closer to magnetic separation belt 5, weakly magnetic mineral 603 then covers on belt conveyor 9;When fine fraction concentrate 601, coarse fraction concentrate 602 and weakly magnetic mineral 603 simultaneously enter the magnetic separation region of magnetic system 6, fine fraction concentrate 601, coarse fraction concentrate 602 are picked up to magnetic separation belt 5 in strong magnetic area 61 and are advanced with magnetic separation belt 5, after entering weak magnetic area 62, coarse fraction concentrate 602 overcomes the magnetic force of strong magnetic area 61 to fall prior to fine fraction concentrate 601 greatly due to granularity, coarse fraction concentrate 602 falls on belt conveyor 9 in parabolic mode, and coarse fraction concentrate 602 is picked up after entering next strong magnetic area 61 with belt conveyor 9 again;Fine fraction concentrate 601 is little due to granularity, is caught by the magnetic force of next strong magnetic area 61 when it does not fall in overcoming magnetic force with parabolic mode dropping process, and again picked up on belt conveyor 9;Pick up due to what replacing of the strong and weak field regions of magnetic system 6, fine fraction concentrate 601 and coarse fraction concentrate 602 repeated-fall, make to be closer at strong magnetic area 61 place fine fraction concentrate 601 lower surface of magnetic separation belt 5, and coarse fraction concentrate 602 covers on fine fraction concentrate layer;When entering belt conveyor 9 outfan, coarse fraction concentrate 602 falls into outlet and is no longer picked up, and the process that fine fraction concentrate 601 still is repeated to pick up-fall is until arriving fine fraction concentrate 601 and exporting, and fills fine fraction concentrate 601 outlet discharge;Breeze rises and falls in process in this repetition, 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, this kind of mode can effectively solve the problem that disk pack wraps up in the problem assorted with magnetic clutch, the effective taste ensureing fine fraction concentrate 601。Fine fraction concentrate 601 type that first above-mentioned magnetic selection method sorts as required and granularity set the speed of the strong and weak width of field regions, the intensity in magnetic field, belt conveyor and magnetic separation belt, after breeze enters magnetic separation region, concentrate repeatedly enters strong magnetic area and weak magnetic area and is repeatedly picked up-fall, in the process, concentrate can obtain repeatedly grading machine meeting, effectively promote concentrate grade, and magnetic separation belt lower surface can be covered according to granularity size, it is achieved concentrate storied placement on magnetic separation belt。
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention。

Claims (9)

1. a Novel magnetic separation mechanism, it is characterized in that, including magnetic separation belt (5), belt conveyor (9), magnetic system (6), belt conveyor (9) is positioned at magnetic separation belt (5) lower section, magnetic system (6) is positioned at inside the lower belt of magnetic separation belt (5) and covers the outfan of belt conveyor (9), the magnetic field intensity power alternate of magnetic system (6)。
2. Novel magnetic separation mechanism as claimed in claim 1, it is characterised in that described magnetic separation belt (5) is installed by a pair roller at its two ends, and one of them roller is magnetic roller (8)。
3. Novel magnetic separation mechanism as claimed in claim 2, it is characterised in that the magnetic field intensity of described magnetic roller (8) is not less than 3000 Gausses, and the disk pack angle of described magnetic roller (8) is 180-240 °。
4. Novel magnetic separation mechanism as claimed in claim 2, it is characterised in that the dust that described magnetic roller (8) place produces when being provided with dust exhaust apparatus (3) for absorbing and throwing tail from magnetic roller (8)。
5. Novel magnetic separation mechanism as claimed in claim 2, is provided with demagnetizing region between magnetic system (6) and magnetic roller (8)。
6. Novel magnetic separation mechanism as claimed in claim 1, it is characterised in that the magnetic field intensity of described magnetic system (6) is 100-3000 Gauss, and described magnetic system (6) includes the strong magnetic area (61) and weak magnetic area (62) that are arranged alternately。
7. Novel magnetic separation mechanism as claimed in claim 1, it is characterised in that the average field strength of described magnetic system (6) is arranged along magnetic separation direction stairway degression。
8. Novel magnetic separation mechanism as claimed in claim 1, it is characterised in that be provided with carrying roller (2) inside the upper belt of magnetic separation belt (5)。
9. Novel magnetic separation mechanism as claimed in claim 1, it is characterised in that described magnetic system (6) is by governor motion (13) connection frame, and this governor motion (13) is used for lifting this magnetic system (6)。
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Cited By (3)

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CN106881195A (en) * 2017-03-27 2017-06-23 北矿机电科技有限责任公司 A kind of dynamic magnetic field dry separation system
CN107377213A (en) * 2017-08-15 2017-11-24 东莞市联洲知识产权运营管理有限公司 A kind of dust-collecting type tramp iron separator for building
CN111215240A (en) * 2019-11-13 2020-06-02 鞍钢集团矿业有限公司 Multilayer magnetic system selection magnetic separator

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CN103331208A (en) * 2013-06-08 2013-10-02 陕西三沅重工发展股份有限公司 Gravity-magnetic composite dry separator and method utilizing same for mineral separation
CN103357499A (en) * 2013-07-01 2013-10-23 陕西三沅重工发展股份有限公司 Belt-type multi-stage multi-gradient magnetic separator and method for mineral separation by using belt-type multi-stage multi-gradient magnetic separator
CN104028371A (en) * 2014-04-09 2014-09-10 陕西三沅重工发展股份有限公司 Combined dry magnetic separator and magnetic separation method
CN204620196U (en) * 2015-03-21 2015-09-09 山东华特磁电科技股份有限公司 Suspended dry type magnetic separator
CN205436003U (en) * 2016-03-23 2016-08-10 成都利君实业股份有限公司 Novel magnetic separation agency

Cited By (4)

* Cited by examiner, † Cited by third party
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CN106881195A (en) * 2017-03-27 2017-06-23 北矿机电科技有限责任公司 A kind of dynamic magnetic field dry separation system
CN106881195B (en) * 2017-03-27 2019-10-29 北矿机电科技有限责任公司 A kind of dynamic magnetic field dry separation system
CN107377213A (en) * 2017-08-15 2017-11-24 东莞市联洲知识产权运营管理有限公司 A kind of dust-collecting type tramp iron separator for building
CN111215240A (en) * 2019-11-13 2020-06-02 鞍钢集团矿业有限公司 Multilayer magnetic system selection magnetic separator

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