CN105562200A - Multi-feeding-belt magnetic separator - Google Patents

Multi-feeding-belt magnetic separator Download PDF

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Publication number
CN105562200A
CN105562200A CN201610169242.2A CN201610169242A CN105562200A CN 105562200 A CN105562200 A CN 105562200A CN 201610169242 A CN201610169242 A CN 201610169242A CN 105562200 A CN105562200 A CN 105562200A
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China
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magnetic
belt
separator
separation
belt conveyor
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CN201610169242.2A
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CN105562200B (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
    • B03C1/18Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation

Abstract

The invention relates to a device for separating magnetic minerals milled by milling equipment in the industries of metallurgy, mine, chemical industry and the like, in particular relates to a device for magnetic separation of mineral powder extruded by a high-pressure roller mill, and concretely relates to a multi-feeding-belt magnetic separator. The multi-feeding-belt magnetic separator comprises a belt pre-separation mechanism, a belt conveying mechanism and a belt tail-separation mechanism which are arranged from top to bottom, wherein the belt pre-separation mechanism comprises more than two stages of belt magnetic separation mechanisms which are arranged in an overlapped mode; each belt magnetic separation mechanism comprises a transmission wheel, a magnetic roller and a magnetic separation belt sleeving the transmission wheel and the magnetic roller; a magnetic system is arranged inside a lower belt of the magnetic separation belt adjacent to the belt conveying mechanism; and the magnetic field of the magnetic system covers the discharge end of the belt conveying mechanism. The multi-feeding-belt magnetic separator is simple in structure, large in treatment amount and capable of simultaneously considering the separated ore grade and tailing rate; the magnetic system structure of each part can be sufficiently and reasonably utilized through a reasonable structure layout; and under the condition of guaranteeing the magnetic separation effect, the treatment capability is high, and the equipment is compact in shape and small in occupation area.

Description

A kind of many chargings belt magnetic separator
Technical field
The present invention relates to the device being applicable to industry sortings of magnetic mineral after milling equipment grinding such as metallurgy, mine, chemical industry, be especially suitable for the magnetic separation of breeze after high-pressure roller mill extruding, specifically a kind of many chargings belt magnetic separator.
Background technology
Along with Large-scale High-Pressure roller mill is in the extensive application of ore dressing field, existing magnetic separator cannot adapt to the great output of roller mill, thus usually adopt multiple stage magnetic separator to mate the scheme of a high-pressure roller mill, cause the situation that equipment investment is large, floor space is large, maintenance is large.Simultaneously, because China's iron ore deposit lean ore is many, rich ore is few, large and the selected amount of magnetic separator throwing tail amount is very little, thus cause separate unit magnetic separator to throw tail scarce capacity and selected ability situation more than needed. simultaneously, because the ratio of magnetic material in raw ore and non-magnetic material is often 5-10%, in the poor situation of magnetic material, also must ensure that magnetic separation mechanism inlet amount must be constant, avoid magnetic plant to throw tail scarce capacity and make to be mingled with too much magnetic material in mine tailing, and then cause that efficiency of magnetic separation is low, energy consumption increases.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, provides that a kind of structure is simple, treating capacity is large and can takes into account ore dressing grade and the many chargings belt magnetic separator throwing tail rate.With rational topology layout, many chargings belt magnetic separator of the present invention ensures that the magnetic architecture of each several part can be used adequately reasonably, when ensureing final magnetic separation effect, not only disposal ability is very large, and equipment compact appearance, and floor space is less.
The technical solution used in the present invention is as follows:.
The invention discloses a kind of many chargings belt magnetic separator, comprise from top to bottom arrange belt preselection mechanism, belt conveyor and belt Wei Xuan mechanism; Belt preselection mechanism comprises the magnetic belt separator structure of the arranged superposed of more than two-stage, the magnetic separation belt that magnetic belt separator structure comprises drive, magnetic roller and is sheathed on drive and magnetic roller, be provided with magnetic system inside the lower belt of the magnetic separation belt adjacent with belt conveyor, the magnetic field of this magnetic system covers the discharge end of belt conveyor.
Due to said mechanism, the magnetic belt separator structure of its multistage setting also can carry out throwing tail by independent conveying mineral powder material respectively, improves the throwing tail ability of concentration equipment; Simultaneously, because China's lean ore is many, the ratio of magnetic material is often lower than 10%, therefore magnetic separation belt magnetic iron is entered into less, be far from reaching its specified sorting capability, cause great energy waste, and increase multi-stage magnetic separation belt, when not affecting the rate of recovery in magnetic ore deposit, efficiency of magnetic separation more than 30% can be improved.Test proves, this concentration equipment magnetic separation 1 ton of concentrate reduces the energy consumption of 8-12% than prior art, magnetic separation time shorten more than 50%, and throwing tail ability increases by more than 40%.
The feed end of adjacent magnetic belt separator structure is that notch cuttype is arranged.The magnetic belt separator structure that this ladder is arranged can be convenient to the cloth of feeding mechanism, and mineral aggregate uniformity at all levels on magnetic belt separator structure can be made better, avoids mineral aggregate to concentrate and the material of two magnetic belt separator structures situation about mutually disturbing.
The feed side of belt preselection mechanism is provided with feed arrangement, exit side is provided with nodules collector device, and feed arrangement is used for for magnetic belt separator structure Homogeneous charge at different levels, and nodules collector device transfers to belt conveyor for the magnetic material magneticly elected by belt preselection mechanism.Feed arrangement is the magnetic separation belt Homogeneous charge of each level.Nodules collector device is arranged on the side of the belt of belt concentration equipment, this nodules collector device transfers to belt conveyor for the magnetic material each level magneticly elected, nodules collector device is the pipeline configuration of vertical direction, in the below of the magnetic belt separator structure of each level, there is import to be communicated with nodules collector device, the magnetic belt separator structure of its minimum one deck can not arrange import, above belt conveyor, have the output of outlet for nodules collector device Mineral Material, the magnetic ore deposit magneticly elected by the belt conveyor in each level is pooled on belt conveyor.
Feed arrangement has multiple discharging opening, and each discharging opening is a corresponding magnetic belt separator structure respectively; Nodules collector device has multiple import and an outlet, and the magnetic ore deposit outlet of each import corresponding magnetic belt separator structure respectively, exports the feed end of corresponding belt conveyor, and the design of its each discharging opening corresponding magnetic belt separator structure respectively can ensure the uniformity of feed; Throwing tail passage and magnetic ore deposit transfering channel are distinguished by arranging of its nodules collector device, can effectively avoid adjacent magnetic belt separator structure to produce interference when magnetic separation.
The magnetic separation belt adjacent with belt conveyor is divided into magnetic roller magnetic region, the first non-magnetic field, magnetic system magnetic region and the second non-magnetic field along magnetic separation direction; Second non-magnetic field to there being concentrate mouth, the feed end of the discharge end of belt conveyor corresponding belt Wei Xuan mechanism.When magnetic ore deposit enters the first non-magnetic field from magnetic roller magnetic region, magnetic ore deposit drops on the belt conveyor of belt conveyor, magnetic ore deposit is by after magnetic separation Belt Conveying to magnetic system magnetic region, ferromagnetism ore deposit is picked up to the lower belt surface of magnetic separation belt, instantly, when the ferromagnetism ore deposit of belt surface enters the second non-magnetic field, ferromagnetism ore deposit falls in concentrate mouth; When weakly magnetic mineral is delivered to end with belt conveyor, drop in belt Wei Xuan mechanism.
Belt Wei Xuan mechanism comprises drive, magnetic roller and the tail be sheathed on drive and magnetic roller selects belt, and tail selects below belt and arranges middle mine mouth.This tail screening device can effectively realize throwing tail again, is separated by chats with non magnetic ore deposit, the magnetic separation in magnetic ore deposit in effectively realizing.
Described magnetic is the magnetic system that power replaces, comprise strong magnetic area and the weak magnetic area of alternate setting, weak magnetic area is used for parabolic manner whereabouts mineral aggregate, and strong magnetic area is for picking up the mineral aggregate fallen in belt conveyor and dropping process, and this magnetic system is used for the layering to different thicknesses mineral aggregate.In said structure, according to magnetic field intensity and the width for the treatment of strong magnetic area and weak magnetic area in the magnetic characteristic setting belt conveyor that ore dressing is different and the speed of service of magnetic separation belt, magnetic system.In mineral after fragmentation, concentrate mostly is strongly magnetic material, has granularity little, and average grain diameter is less than the feature of 15mm; Chats mostly is weakly magnetic material, and granularity is comparatively large, and average grain 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 in strong magnetic area and enters weak magnetic area with magnetic separation belt, and chats then continues to run with belt conveyor to enter middle mine mouth, realizes the sorting of concentrate and chats.Meanwhile, after being entered weak magnetic area by the concentrate that magnetic system strong magnetic area picks up, first the concentrate that granularity is large overcomes magnetic force and to fall on belt conveyor with parabolic manner and be transported to next strong magnetic area and again picked up, and overcomes magnetic force to fall with parabolic manner and again to be picked up by next strong magnetic area in dropping process after the concentrate that granularity is little in the concentrate that granularity is large.Along with the repeatedly alternately change of the strong and weak field regions of magnetic system, concentrate is then repeatedly picked up-is fallen, and concentrate obtains repeatedly being shaken off by the non-magnetic material be mingled with in this process of rising and falling, and effectively solves disk pack and wraps up in the problem be mingled with magnetic, ensure the taste of concentrate; Meanwhile, due to the difference of granularity of concentrate, the concentrate that granularity is little more presses close to belt surface, and what granularity was large then covers the little concentrate surface of granularity, realize the layering of concentrate on magnetic separation belt, and priority departs from and realizes the layering of the thickness of concentrate when entering concentrate mouth.The magnetic field intensity of magnetic system strong magnetic area is successively decreased along magnetic separation direction, and the magnetic field intensity of magnetic system weak magnetic area increases progressively along magnetic separation direction, and strong magnetic area magnetic field intensity is greater than weak magnetic area all the time.In order to make magnetic system have the different field region of multiple magnetic field intensity better, Ci Xi mechanism is made up of multiple little magnetic system, and the magnetic field intensity between adjacent little magnetic system is different, to form the field regions with different magnetic field intensity.
Magnetic system is installed by liftable governor motion, and this governor motion is for being elevated this magnetic system.This lifting.The setting of this governor motion can effectively regulate magnetic system relative to the position of lower belt, and then the magnetic induction intensity that can effectively control under magnetic separation belt on strap surface, thus realize the adjustable effect in magnetic field, ensure that this magnetic separation mechanism can be applicable to magnetic separation that is more and the magnetic ore deposit of granularity, ensure the taste of the concentrate magneticly elected.This governor motion makes magnetic material ferromagnetism in the vertical clearly more demarcated to the layering of weak magnetic, this mechanism can regulate the position of each little magnetic system of field regions respectively, each little magnetic system is made to have different magnetic force because of different from the distance of magnetic separation belt to material, thus make that each little magnetic system is easier produces different magnetic field intensities to material, and then realize the layering of magnetic material ferromagnetism in the vertical to weak magnetic.
In order to enable magnetic roller realize being separated magnetic material and non-magnetic material better, magnetic roller comprises a hollow cylinder and is located at the fixing magnetic system in hollow cylinder.By magnetic roller, the sorting of throwing tail is carried out to material, centrifugal force, gravity and the magnetic force suffered by material can be utilized fully, make the concentration criterion of magnetic material and non-magnetic material more thorough, reduce non-magnetic material as far as possible to the impact of subsequent handling, avoid simultaneously to non-magnetic material repeat sort, to reduce energy consumption, and improve the concentrate grade of mineral.
In order to ensure that all magnetic materials can be held, thus obtain qualified mine tailing, the magnetic field intensity requirement >=250kA/m of described magnetic roller.To guarantee to obtain the alap mine tailing of Armco magnetic iron content.
Effectively implemented to enable technical scheme of the present invention, mine tailing mouth is provided with outside described magnetic roller, demagnetizing region (or non-magnetic field) is provided with between magnetic roller and magnetic system, the feeding end of belt conveyor covers the unloading range of belt preselection mechanism, all falls into belt conveyor with the magnetic material after making throwing tail; Magnetic system covers the delivery end of belt conveyor and below the non-magnetic field at magnetic system rear, is provided with concentrate mouth; Tail selects the feeding end of belt to cover the delivery end of belt conveyor, and mine mouth in being provided with below the magnetic roller of belt Wei Xuan mechanism.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1. the magnetic system arrangement by adopting magnetic field power to replace, makes magnetic separator can realize mineral varigrained concentrate layering magnetic separation belt is longitudinal according to the particle diameter of mineral, effectively solves disk pack and wrap up in the problem be mingled with magnetic; The setting of magnetic system governor motion, more easily can realize the adjustment of magnetic system to material amount of force, is more conducive to realizing mineral varigrained concentrate layering magnetic separation belt is longitudinal; The setting of carrying roller, can adjust parabolic motion track when material moves between strong and weak magnetic region, promotes further the layering of material, namely adjust material material enters weak magnetic area during from strong magnetic area dish out angle and enter strong magnetic area by weak magnetic area time suction angle;
2. selecting belt by arranging tail, can obtain, containing the least possible chats of gangue, field trash, being conducive to the subsequent treatment of chats;
3., in magnetic separation process, mine tailing can not be repeated to enter sorting step, thus reduces electric energy loss.
4. simple, the wide accommodation of the belt magnetic separator structure of this device, can ensure that finished product ore deposit grade can improve the rate of recovery again, be applicable to the sorting of industry magnetic minerals after milling equipment grinding such as metallurgy, mine, chemical industry, be particularly useful for the sorting of breeze after high-pressure roller mill extruding, complete machine is by integrated setting simultaneously, compact conformation, equipment volume, weight are optimized more, and on-the-spot occupied area is few.
Accompanying drawing explanation
Fig. 1 is the front view of many chargings belt magnetic separator;
Fig. 2 is the magnetic ore deposit magnetic separation structure chart of magnetic system;
Mark in figure: 1-frame, 2-feed arrangement, 21-first iron ore feeding hole, 22-second iron ore feeding hole, 3-belt preselection mechanism, 31-first magnetic separation belt, 32-second magnetic separation belt, 4-belt conveyor, 5-nodules collector device, the rough import of 51-, the rough outlet of 52-, 6-magnetic system, 61-strong magnetic area, 62-weak magnetic area, 601-fine fraction concentrate, 602-coarse fraction concentrate, ore deposit more than 603-, 7-belt Wei Xuan mechanism, 8-concentrate mouth, 9-mine tailing mouth, 10-middle mine mouth.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object 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 only in order to explain the present invention, be not intended to limit the present invention.
Concrete enforcement: 1:
As shown in Figure 1, one many chargings belt magnetic separator of the present invention, comprises frame 1 and is arranged on belt preselection mechanism 3 in frame 1, belt conveyor 4 and belt Wei Xuan mechanism 7, feed arrangement 2, nodules collector device 5, concentrate mouth 8, middle mine mouth 10, magnetic system 6, actuating unit and mine tailing mouth 9.
Belt preselection mechanism 3, belt conveyor 4 and belt Wei Xuan mechanism 7 from top to bottom arrange.
Belt preselection mechanism 3 comprises the first magnetic belt separator structure and the second magnetic belt separator structure of two-stage arranged superposed, the magnetic separation belt that magnetic belt separator structure comprises drive, magnetic roller respectively and is sheathed on drive and magnetic roller, magnetic system 6 is provided with inside the lower belt of adjacent the second magnetic separation belt 32 of belt conveyor 4, the magnetic field of this magnetic system 6 covers the discharge end of belt conveyor 4, and the first magnetic separation belt 31 is set in parallel in the top of the second magnetic separation belt 32.
Belt conveyor 4 comprises driving wheel, driven pulley and belt conveyor, and driving wheel and driven pulley are rotating to be respectively connected in frame 1, and belt conveyor is set between driving wheel and driven pulley.
Belt Wei Xuan mechanism 7 comprises drive, magnetic roller and the tail be sheathed on drive and magnetic roller selects belt, and tail selects below belt and arranges middle mine mouth 10.
Feed arrangement 2 is arranged on the feed side of belt preselection mechanism 3, feed arrangement 2 is for being magnetic belt separator structure Homogeneous charge at different levels, feed arrangement 2 has two discharging openings, the corresponding first magnetic belt separator structure of the first discharging opening, the corresponding second magnetic belt separator structure of the second discharging opening; Involving vibrations screen device gone back by feed arrangement 2, and it is magnetic belt separator structure feed at different levels that this vibrating screen device is used for uniformly.
Nodules collector device 5 is arranged on the exit side of belt preselection mechanism 3; Nodules collector device 5 has the passage of rough import 51, rough outlet 52 and tubulose, the magnetic ore deposit outlet of the corresponding magnetic belt separator structure of rough import 51, the feed end of the corresponding belt conveyor 4 of rough outlet 52, nodules collector device 5 transfers to belt conveyor 4 for the magnetic ore deposit magneticly elected by belt preselection mechanism 3.
Actuating unit is for driving belt preselection mechanism 3, belt conveyor 4 and belt Wei Xuan mechanism 7.
Said mechanism in use, first, the raw ore material fed is averagely allocated to the bilevel magnetic separation belt of belt preselection mechanism 3 from charging aperture, and move to respective magnetic separation region along with belt, magnetic material is attracted to non-magnetic material on magnetic roller and is then thrown into mine tailing mouth 9 under the influence of centrifugal force, thus realizes the initial gross separation of magnetic material and non-magnetic material.All entered the feeding end of belt conveyor by belt conveyor 4 through the magnetic material of above-mentioned two magnetic separation gained.Further, these magnetic materials are transported to the field region of the magnetic system 6 for sorting below second layer preliminary election belt by belt conveyor, strongly magnetic material wherein adsorb by magnetic system 6, and fall into concentrate mouth 8 at the lower surface of magnetic separation belt along with the operation of belt, weakly magnetic material or then run along with belt conveyor by a small amount of nonmagnetic material that is mingled with and fall in the belt Wei Xuan mechanism 7 of below, thus achieve the sorting of strongly magnetic material and weakly magnetic material.Finally, weakly magnetic material or selected belt to run to the magnetic separation region of belt Wei Xuan mechanism 7 along with tail by a small amount of nonmagnetic material be mingled with, realizes weakly magnetic material and again on a small quantity by the separation between the non-magnetic material that is mingled with under the suction-operated in territory, left magnetic roller strong magnetic area 61.Namely a small amount of non-magnetic material and micromagnetism material be directly thrown under centrifugal action mine tailing mouth 9 weakly magnetic material be then brought under the strong magnetic suck of magnetic pulley in mine mouth 10, complete whole magnetic separation process.
Specific embodiment 2:
On the basis of embodiment, this belt preselection mechanism 3 can also be the magnetic belt separator structure of three grades and above quantity, and the feed end of adjacent magnetic belt separator structure is that notch cuttype is arranged.
The magnetic belt separator structure of minimum one deck can not arrange import, has the output of outlet for nodules collector device 5 Mineral Material, be pooled on belt conveyor in the magnetic ore deposit that the belt conveyor 4 in each level magneticly elects above belt conveyor 4.
The magnetic separation belt (be namely the magnetic separation belt of lowermost layer) adjacent with belt conveyor 4 is divided into magnetic roller magnetic region, the first non-magnetic field, magnetic system 6 magnetic region and the second non-magnetic field along magnetic separation direction; Second non-magnetic field to there being concentrate mouth 8, the feed end of the discharge end of belt conveyor 4 corresponding belt Wei Xuan mechanism 7.When magnetic ore deposit enters the first non-magnetic field from magnetic roller magnetic region, magnetic ore deposit drops on the belt conveyor of belt conveyor 4, magnetic ore deposit is by after magnetic separation Belt Conveying to magnetic system 6 magnetic region, ferromagnetism ore deposit is picked up to the lower belt surface of magnetic separation belt, instantly, when the ferromagnetism ore deposit of belt surface enters the second non-magnetic field, ferromagnetism ore deposit falls in concentrate mouth 8; When weakly magnetic mineral is delivered to end with belt conveyor, drop in belt Wei Xuan mechanism 7.
Magnetic system 6 is the strong and weak magnetic system 6 replaced, comprise strong magnetic area 61 and the weak magnetic area 62 of alternate setting, weak magnetic area 62 is for parabolic manner whereabouts mineral aggregate, and strong magnetic area 61 is for picking up the mineral aggregate fallen in belt conveyor and dropping process, and this magnetic system 6 is for the layering to different thicknesses mineral aggregate; Magnetic system 6 is installed by liftable governor motion, and this governor motion is for being elevated this magnetic system 6.The setting of this governor motion can effectively regulate magnetic system 6 relative to the position of lower belt, and then the magnetic induction intensity that can effectively control under magnetic separation belt on strap surface, thus realize the adjustable effect in magnetic field, ensure that this magnetic separation mechanism can be applicable to magnetic separation that is more and the magnetic ore deposit of granularity, ensure the taste of the concentrate magneticly elected.The magnetic field intensity of magnetic system 6 strong magnetic area 61 is successively decreased along magnetic separation direction, and the magnetic field intensity of magnetic system 6 weak magnetic area 62 increases progressively along magnetic separation direction, and strong magnetic area 61 magnetic field intensity is greater than weak magnetic area 62 all the time.
In order to the sorting making magnetic system 6 realize strong magnetic and weak magnetic better, the set-up mode that magnetic system 6 employing power replaces, when magnetic material enters the magnetic separation scope of magnetic system 6, the strongly magnetic material that average grain diameter is less is caught by magnetic field and is attached to magnetic separation belt surface, and average grain diameter larger particles then covers the less material surface of particle diameter.When the magnetic material be attracted on magnetic separation belt is transported to more weak field region, the magnetic material that part particle diameter is larger will be fallen on belt conveyor because self gravitation is greater than the absorption affinity in magnetic field, when belt conveyor the magnetic material of whereabouts is delivered to the next one comparatively high-intensity magnetic field district time, the magnetic material that particle diameter is larger can be picked up again again, like this, constantly pick up-fall-repetitive process that picks up by magnetic system 6 pairs of magnetic materials, magnetic material is made to obtain the chance of repeatedly sorting, realize the particle diameter layering from small to large of magnetic material on magnetic separation belt is longitudinal, and then realize being separated of strong magnetic particle and weak magnetic particle.Meanwhile, in magnetic system, 6 pairs of magnetic materials constantly pick up-fall-process that picks up in, solve that the disk pack of magnetic material is wrapped up in and the conventional difficulties of magnetic separation circle such as magnetic is mingled with, the concentrate grade that magnetic separation belt is sorted out is promoted greatly.
Specific embodiment 3:
The magnetic separator magnetic selection method in use of embodiment 1 or embodiment 2, the paving that ore powder is evenly impartial is spread across on the magnetic belt separator structures at different levels of independent transport respectively by iron ore feeding hole such as the first iron ore feeding hole 21, second iron ore feeding hole 22 by feed arrangement 2, tail is thrown at material left magnetic roller place, non magnetic mineral aggregate is under the effect of inertia, enter and throw in tail mouth, under the effect of ferromagnetism breeze and weakly magnetic mineral powder left magnetic roller magnetic force, be adjacent to magnetic separation belt and below the lower belt being taken to magnetic separation belt, after the magnetic force of magnetic roller disappears, ferromagnetism breeze and weakly magnetic mineral powder fall in the rough import 51 of material-gathering device, and fall to belt conveyor from coarse fodder outlet, chats and concentrate are transported to the magnetic region of magnetic system 6 by belt conveyor, fine fraction concentrate 601 is fallen into concentrate mouth 8 by after magnetic system 6 magnetic separation, coarse fraction concentrate 602 and remaining ore deposit 603(comprise a small amount of non-magnetic breeze, weakly magnetic mineral powder) drop to tail and select on belt, this tail selects belt that concentrate and remaining ore deposit 603 are transported to its end, and non-magnetic breeze is thrown tail again, and make weakly magnetic mineral powder and coarsely graded concentrate fall into mine mouth 10, this tail screening device can effectively realize throwing tail again, chats is separated with non magnetic ore deposit, the magnetic separation in magnetic ore deposit in effective realization.
In mineral after fragmentation, concentrate mostly is strongly magnetic material, has granularity little, and average grain diameter is less than the feature of 15mm; Chats mostly is weakly magnetic material, and granularity is comparatively large, and average grain diameter is between 15-40mm; Remaining ore deposit 603 is do not have magnetic or the faint breeze material of magnetic.According to magnetic field intensity and the width for the treatment of strong magnetic area 61 and weak magnetic area 62 in the magnetic characteristic setting belt conveyor that ore dressing is different and the speed of service of magnetic separation belt, magnetic system 6.Because magnetic system 6 is the strong and weak magnetic system 6 replaced, when magnetic material is taken to magnetic system 6 magnetic separation scope with belt conveyor, concentrate is adsorbed to magnetic separation belt surface in strong magnetic area 61 and enters weak magnetic area 62 with magnetic separation belt, chats then continues to run with belt conveyor to enter middle mine mouth 10, realizes the sorting of concentrate and chats.Meanwhile, after being entered weak magnetic area 62 by the concentrate that magnetic system 6 strong magnetic area 61 picks up, first the concentrate that granularity is large overcomes magnetic force and to fall on belt conveyor with parabolic manner and be transported to next strong magnetic area 61 and again picked up, and overcomes magnetic force to fall with parabolic manner and again to be picked up by next strong magnetic area 61 in dropping process after the concentrate that granularity is little in the concentrate that granularity is large.Along with the repeatedly alternately change of the strong and weak field regions of magnetic system 6, concentrate is then repeatedly picked up-is fallen, and concentrate obtains repeatedly being shaken off by the non-magnetic material be mingled with in this process of rising and falling, and effectively solves disk pack and wraps up in the problem be mingled with magnetic, ensure the taste of concentrate; Simultaneously, due to the difference of granularity of concentrate, the concentrate that granularity is little more presses close to belt surface, and what granularity was large then covers the little concentrate surface of granularity, realize the layering of concentrate on magnetic separation belt, and priority departs from and realizes the layering of the thickness of concentrate when entering concentrate mouth 8.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. the belt magnetic separator of charging more than, is characterized in that, comprise from top to bottom arrange belt preselection mechanism (3), belt conveyor (4) and belt Wei Xuan mechanism (7); Belt preselection mechanism (3) comprises the magnetic belt separator structure of the arranged superposed of more than two-stage, the magnetic separation belt that magnetic belt separator structure comprises drive, magnetic roller and is sheathed on drive and magnetic roller, be provided with magnetic system (6) inside the lower belt of the magnetic separation belt adjacent with belt conveyor (4), the magnetic field of this magnetic system (6) covers the discharge end of belt conveyor (4).
2. many chargings belt magnetic separator as claimed in claim 1, is characterized in that, described belt preselection mechanism (3) comprises two-stage or three grades of magnetic belt separator structures.
3. many chargings belt magnetic separator as claimed in claim 1, is characterized in that, the feed end of adjacent magnetic belt separator structure is that notch cuttype is arranged.
4. many chargings belt magnetic separator as claimed in claim 1, it is characterized in that, the feed side of belt preselection mechanism (3) is provided with feed arrangement (2), exit side is provided with nodules collector device (5), feed arrangement (2) is for being magnetic belt separator structure Homogeneous charge at different levels, and nodules collector device (5) transfers to belt conveyor (4) for the magnetic ore deposit magneticly elected by belt preselection mechanism (3).
5. many chargings belt magnetic separator as claimed in claim 4, is characterized in that, feed arrangement (2) has multiple discharging opening, and each discharging opening is a corresponding magnetic belt separator structure respectively; Nodules collector device (5) has multiple import and an outlet, and the magnetic ore deposit outlet of the corresponding magnetic belt separator structure of each import difference, exports the feed end of corresponding belt conveyor (4).
6. many chargings belt magnetic separator as claimed in claim 1, is characterized in that, the magnetic separation belt adjacent with belt conveyor (4) is divided into magnetic roller magnetic region, the first non-magnetic field, magnetic system (6) magnetic region and the second non-magnetic field along magnetic separation direction; Second non-magnetic field to there being concentrate mouth (8), the feed end of corresponding belt Wei Xuan mechanism (7) of the discharge end of belt conveyor (4).
7. many chargings belt magnetic separator as claimed in claim 1, is characterized in that, belt Wei Xuan mechanism (7) comprises drive, magnetic roller and the tail be sheathed on drive and magnetic roller selects belt, and tail selects below belt and arranges middle mine mouth (10).
8. many chargings belt magnetic separator as claimed in claim 1, it is characterized in that, described magnetic system (6) is the strong and weak magnetic system (6) replaced, comprise strong magnetic area (61) and weak magnetic area (62) of alternate setting, weak magnetic area (62) is for parabolic manner whereabouts mineral aggregate, strong magnetic area (61) is for picking up the mineral aggregate fallen in belt conveyor and dropping process, and this magnetic system (6) is for the layering to different thicknesses mineral aggregate.
9. many chargings belt magnetic separator as claimed in claim 1, is characterized in that, described magnetic system (6) is installed by liftable governor motion, and this governor motion is for being elevated this magnetic system (6).
CN201610169242.2A 2016-03-23 2016-03-23 A kind of more charging belt magnetic separators Active CN105562200B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108906319A (en) * 2018-07-04 2018-11-30 怀宁县恒源再生科技有限公司 Sorter is used in a kind of recycling of scrap iron
CN111215240A (en) * 2019-11-13 2020-06-02 鞍钢集团矿业有限公司 Multilayer magnetic system selection magnetic separator
CN112807819A (en) * 2020-12-22 2021-05-18 河北钢铁集团矿业有限公司 Handle filter-pressing magnet separator of iron ore sewage

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