CN211678221U - Micro powder dry magnetic separator - Google Patents

Micro powder dry magnetic separator Download PDF

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Publication number
CN211678221U
CN211678221U CN201922206936.0U CN201922206936U CN211678221U CN 211678221 U CN211678221 U CN 211678221U CN 201922206936 U CN201922206936 U CN 201922206936U CN 211678221 U CN211678221 U CN 211678221U
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China
Prior art keywords
concentrate
air outlet
negative pressure
outer cylinder
magnetic separator
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CN201922206936.0U
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Chinese (zh)
Inventor
何亚民
丁亚卓
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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Priority to CN201922206936.0U priority Critical patent/CN211678221U/en
Priority to PCT/CN2020/082716 priority patent/WO2021114515A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material
    • 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
    • B03C1/10Magnetic separation acting directly on the substance being separated with cylindrical material carriers
    • B03C1/12Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The utility model discloses a miropowder dry-type magnet separator relates to mineral magnetic separation technical field. The utility model discloses a casing, the supporting has rotatable outer cylinder and rotatory magnetism system in the casing, rotatory magnetism system arranges in outer cylinder with one heart, be provided with the feed inlet of tailing discharge opening and outside cylinder pay-off on the casing, tailing discharge opening department is provided with the airlock valve, still be provided with air intake and air outlet on the casing, the air outlet forms the negative pressure on outer cylinder's local working face, make outer cylinder have concentrate sorting district and concentrate negative pressure district of unloading on the circumferencial direction, the concentrate in the concentrate negative pressure district of unloading is along with the air current discharge air outlet. The utility model discloses a magnetic separator utilizes local negative pressure to siphon away the concentrate on outer cylinder surface in order to reach the automatic effect of unloading the ore deposit, can realize unloading completely, effectively improves the ore dressing efficiency and the life of magnetic separator.

Description

Micro powder dry magnetic separator
Technical Field
The utility model relates to a mineral magnetic separation technical field, especially a miropowder dry-type magnet separator.
Background
Under the action of a magnetic field, magnetic mineral particles are subjected to magnetic aggregation to form magnetic groups or magnetic chains, and the magnetic groups or the magnetic chains move towards the magnetic poles under the action of magnetic force. The roller magnetic separator is a common device for magnetic ore separation in the mineral separation industry.
The chinese utility model patent with publication number CN203990893U discloses a permanent-magnet full-magnetic separator, which comprises a frame, a hood, a magnetic drum motor, a speed reducer, a central shaft connected with the speed reducer through a coupling, a magnetic drum fixed on the central shaft, and an ore unloading mechanism cooperating with the magnetic drum for unloading the concentrate from the magnetic drum; the magnetic roller is formed by fixing a plurality of magnetic blocks on a magnetic conductive iron plate through screws to form a roller shape and wrapping the magnetic roller externally by a stainless steel cylinder skin, the formed magnetic system is a circumferential magnetic system, and the magnetic wrap angle is 360 degrees. The roller magnetic separator has the following defects:
1. the ore discharging mechanism is used for forcibly discharging in a scraping and pressing mode, materials are extruded in a discharging area inevitably, and when large particles or iron-containing devices exist in the materials, pressure applied by the ore discharging mechanism acts on the outer drum through the materials and the iron-containing devices, so that the outer drum is abraded and even damaged;
2. unloading mechanism forces to unload and can't take away whole material, and partial material is retained on outer cylinder surface, along with the increase of magnet separator live time and constantly compaction, peel off, and the outer cylinder wearing and tearing of aggravation just reduce magnet separator ore dressing efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aim at: to the problem that current cylinder magnet separator forces to unload and leads to outer drum wearing and tearing, the utility model provides a miropowder dry-type magnet separator, this miropowder dry-type magnet separator unload at the concentrate of outer cylinder regional local negative pressure that forms, utilize local negative pressure to siphon away the concentrate on outer cylinder surface in order to reach the effect of unloading the ore deposit automatically, can realize unloading completely, effectively improve the ore dressing efficiency and the life of magnet separator.
The utility model adopts the technical scheme as follows:
according to the utility model discloses a miropowder dry-type magnet separator, which comprises a housin, the casing internal support has rotatable outer cylinder and rotatory magnetism to be, rotatory magnetism is arranged concentrically in the outer cylinder, be provided with the feed inlet of tailing discharge opening and outside cylinder pay-off on the casing, tailing discharge opening department is provided with the airlock valve, still be provided with air intake and air outlet on the casing, the air outlet is in form the negative pressure on the local working face of outer cylinder, make the outer cylinder has concentrate sorting district and concentrate negative pressure on the circumferencial direction and unloads the district, the concentrate negative pressure of unloading in the district is along with the air current discharge air outlet in the concentrate.
Further, the air outlet extends towards the direction of the concentrate negative pressure discharging area to the shell; a gap is arranged between the air outlet and the outer roller, and the width of the gap is 0-20 mm.
Further, the air outlet direction of the air outlet is inclined relative to the horizontal plane, or the air outlet direction of the air outlet is parallel to the horizontal plane.
Further, the negative pressure wind speed of the concentrate negative pressure discharging area is 3-25 m/s.
Further, in cross section, the concentrate sorting zone comprises at least a part of the working surface of the lower part of the outer drum; the tailing discharge opening is arranged below the outer roller, and the tailings separated in the concentrate separation area are discharged to the tailing discharge opening.
Furthermore, on the cross section, the feed inlet and the air outlet are respectively acted on two opposite sides of the outer roller, and the air outlet is positioned in the middle or in the middle upper part of one side of the outer roller.
Furthermore, the feed inlet extends towards the shell, and the feeding direction of the feed inlet is inclined downwards relative to the horizontal plane.
Further, the outer roller comprises an outer roller rotating shaft driven to rotate by an outer roller power source and an outer barrel body connected with the outer roller rotating shaft; the power source of the outer cylinder is a variable frequency motor; the outer cylinder power source and the outer cylinder rotating shaft are driven by a belt mechanism or a chain mechanism or a gear mechanism.
Furthermore, the rotating magnetic system comprises an inner cylinder rotating shaft driven to rotate by an inner cylinder power source and an inner cylinder body connected with the inner cylinder rotating shaft, and a plurality of permanent magnets are arranged on the outer surface of the inner cylinder body; the inner cylinder power source is a variable frequency motor. The polarities of the permanent magnets adjacent to each other in the axial direction are the same, and the polarities of the permanent magnets adjacent to each other in the circumferential direction are different.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model discloses a miropowder dry-type magnet separator forms relative confined inner room in its casing, utilize the air current between air intake and the air outlet to form the negative pressure on making the local working face of outer cylinder, the tailings are removed in the concentrate sorting district back that the raw ore got into the outer cylinder by the feed inlet, the concentrate that the sorting was selected gets into the concentrate negative pressure district of unloading by the negative pressure formation on outer cylinder surface along with the outer cylinder rotation, the concentrate is unloaded the district at the concentrate negative pressure and is taken away from outer cylinder surface by the air current to discharge the casing along with the air current by the air outlet. The utility model discloses a miropowder dry-type magnet separator adopts negative pressure automatic discharge's mode can realize unloading completely, applicable in the magnetic separation operation of mineral granularity 0-3mm within range. The tailings are automatically separated and discharged under the action of gravity in the separation process, the concentrate is automatically discharged under the negative pressure, the abrasion speed of an outer roller of the magnetic separator is greatly reduced, and the mineral separation efficiency and the service life of the magnetic separator are improved. And the separated concentrate is timely and quickly discharged out of the magnetic separator, so that the grade of the concentrate can be effectively guaranteed, and the mineral separation efficiency is further improved.
Drawings
FIG. 1 is a front view of the dry magnetic separator for micro powder of the present invention;
FIG. 2 is a left side view of the micro powder dry magnetic separator of the present invention;
the labels in the figure are: 1-a frame; 2-a lock air valve; 3-a shell; 301-feed inlet; 302-an air inlet; 303-air outlet; 304-a tailings receiving hopper; 4-an outer drum; 401-outer cylinder rotating shaft; 402-an outer cylinder; 403-outer cylinder power source; 5-rotating magnetic system; 501-inner cylinder rotating shaft; 502-inner cylinder; 503-inner cylinder power source; 504-a permanent magnet; h-concentrate negative pressure discharge area.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, a dry magnetic separator for micro powder disclosed in the embodiment is described, which comprises a housing 3 provided with a feed inlet 301 and a tailing discharge outlet, a rotatable outer drum 4 and a rotary magnetic system 5 supported in the housing 3, wherein the rotary magnetic system 5 is concentrically arranged in the outer drum 4 and can rotate relatively; an air inlet 302 and an air outlet 303 are arranged on the shell 3, air flow is introduced into the shell 3, and the air outlet 303 forms negative pressure on the local working surface of the outer roller 4, so that the outer roller 4 is provided with a concentrate sorting area and a concentrate negative pressure discharging area H in the circumferential direction. In order to stabilize the gas and the solid in the shell 3 relatively, prevent the settled tailings from being sucked away and realize the gas-solid separation of the tailings, an air locking valve 2 is arranged at the tailing discharge port.
Specifically, the concentrate negative pressure discharging area H discharges the concentrate by using the negative pressure formed by the airflow on the partial working surface of the outer drum 4. Along with the rotation of the outer roller 4, raw ore entering the concentrate separation area is continuously subjected to separation of concentrate and tailings, and tailings are discharged, and the concentrate is adsorbed on the surface of the outer roller 4 after being separated from the tailings; after the concentrate enters the concentrate negative pressure discharging area H from the concentrate sorting area, the concentrate can overcome the magnetic force and gravity by the pressure difference of the concentrate negative pressure discharging area H, is separated from the surface of the outer roller 4 and is discharged out of the shell 3 through the air outlet 303 along the airflow flowing direction, and the concentrate discharging is completed.
Optionally, the casing 3 is an external support for the magnetic separator to prevent dust diffusion. In order to improve the mechanical stability of the shell 3 and provide sufficient discharge space, the frame 1 can be installed below the shell 3, the height of the main body of the shell 3 is raised, and sufficient space is reserved for discharging. The housing 3 is provided with a feed inlet 301, the feed inlet 301 is used for feeding the outer roller 4, and the feed inlet 301 can be arranged at the top of the housing 3 or at the side of the housing 3. Because the starting end in concentrate sorting district has been injectd to the position of outer cylinder 4 cooperation feed inlet 301 feeding, for the concentrate sorting district of increase outer cylinder 4, improve ore dressing efficiency, the preferred setting of feed inlet 301 is at casing 3 top. In order to reduce the impact wear of the raw ore on the outer drum 4, it is preferable that the feeding port 301 extends into the casing 3, the feeding direction of the feeding port 301 is inclined downward with respect to the horizontal plane to avoid vertical impact, and the inclined feeding causes the raw ore to have an initial velocity following the movement of the outer drum 4 when the raw ore falls down to the working surface of the outer drum 4. As shown in fig. 1, the feeding direction of the feed port 301 is inclined to the lower left.
Optionally, because the magnetic force is not acted, the tailings in the raw ore directly fall and unload after contacting the outer drum 4, or fall and unload after moving for a section of way along with the rotating direction of the outer drum 4, and the concentrate is adsorbed on the surface of the outer drum 4 under the action of the magnetic force, so that the concentrate sorting area at least comprises part of the working surface at the lower part of the outer drum 4; the tailings discharge opening is preferably provided in the casing 3 below the outer drum 4, at the bottom of the casing 3. Further, in order to facilitate the tailing gathering and discharging, the bottom of the shell 3 is provided with a tailing receiving hopper 304, and a tailing discharging opening is arranged at the reducing end of the tailing receiving hopper 304.
Optionally, the air inlet 302 is separated from the feed inlet 301 in order to avoid the air flow formed between the air inlet 302 and the air outlet 303 interfering with the feeding and the beneficiation. In cross section, as shown in fig. 1, the air inlet 302 and the feed inlet 301 respectively act on the left and right sides of the outer drum 4. For the same purpose, the air outlet 303 and the feed inlet 301 respectively act on the left side and the right side of the outer drum 4, and the air inlet 302 and the air outlet 303 are positioned on the same side; preferably, the air outlet 303 is located in the middle or in the middle upper part of one side of the outer drum 4 far away from the feed inlet 301, and the air inlet 302 is located right above the concentrate negative pressure discharge area H. The air outlet 303 defines a concentrate negative pressure discharging area H of the outer roller 4 and the tail end of a concentrate sorting area, and the action position of the feed inlet 301 defines the starting end of the concentrate sorting area of the outer roller 4, so that the air inlet 302, the air outlet 303 and the feed inlet 301 respectively act on the left side and the right side of the outer roller 4, an air flow action area between the air inlet 302 and the air outlet 303 can be separated from the concentrate sorting area, and the air flow cannot interfere with mineral sorting; meanwhile, the relative position arrangement of the air outlet 303 and the air inlet 302 can shorten the action path of the air flow, and improve the negative pressure unloading efficiency.
Optionally, to improve the energy efficiency, the air outlet 303 of the casing 3 extends into the casing 3 along a direction pointing to the concentrate negative pressure discharge area H. Under the same wind power, the closer the air outlet 303 is to the concentrate negative pressure discharging area H of the outer roller 4, the larger the negative pressure value of the concentrate negative pressure discharging area H is. A gap is arranged between the air outlet 303 and the surface of the outer roller 4, and in order to guarantee smooth feeding and discharging and consider the problem of energy efficiency, the width of the gap is set to be 0-20mm, preferably 6-12 mm.
Optionally, the air outlet direction of the air outlet 303 may be inclined downward, inclined upward or horizontal with respect to the horizontal plane. Since the tailings or tailings dust deposited near the tailings discharge opening may be lifted by the influence of the air flow, which affects the concentrate grade and the beneficiation efficiency, the air outlet direction of the air outlet 303 is preferably inclined downward relative to the horizontal plane, so that disturbance to the air flow of the tailings discharge opening and the concentrate separation area is reduced.
Optionally, the negative pressure wind speed of the concentrate negative pressure discharging area H affects the mineral separation efficiency, when the negative pressure wind speed is too low, the concentrate cannot be separated from the working surface of the outer drum 4, and when the negative pressure wind speed is too high, the concentrate separation area may be affected by the airflow, and normal mineral separation cannot be performed. In the embodiment, the negative pressure wind speed of the concentrate negative pressure discharging area H is 3-25m/s, and preferably 10-18 m/s.
Optionally, the rotating magnetic system 5 includes an inner cylinder 502, an inner cylinder rotating shaft 501 and an inner cylinder power source 503, the inner cylinder 502 is disposed on the inner cylinder rotating shaft 501 and rotates with the outer cylinder rotating shaft 401, and the outer cylinder power source 403 drives the outer cylinder rotating shaft 401 to rotate through a transmission mechanism; the outer surface of the inner cylinder 502 is provided with a plurality of permanent magnets 504. The inner cylinder power source 503 is a variable frequency motor, and can be connected with the inner cylinder rotating shaft 501 through a coupler, and the variable frequency motor can realize forward rotation, reverse rotation and stepless speed regulation of the rotating magnetic system 5.
Alternatively, the rotating magnetic system 5 forms an alternating magnetic field on the working surface of the outer drum 4 rotating relative thereto. Specifically, among the permanent magnets 504 on the outer surface of the inner cylinder 502, the adjacent permanent magnets 504 in the axial direction have the same polarity, and the adjacent permanent magnets 504 in the circumferential direction have different polarities.
Optionally, the outer drum 4 includes an outer drum 402, an outer drum rotating shaft 401 and an outer drum power source 403, the outer drum 402 is disposed on the outer drum rotating shaft 401 and rotates along with the outer drum rotating shaft 401, and the outer drum power source 403 drives the outer drum rotating shaft 401 to rotate through a transmission mechanism. The transmission mechanism between the outer cylinder power source 403 and the outer cylinder rotating shaft 401 may be one of a belt mechanism, a chain mechanism and a gear mechanism; the outer cylinder power source 403 is a variable frequency motor which can realize the forward rotation, reverse rotation and stepless speed regulation of the outer roller 4. Further, the outer cylinder rotating shaft 401 is a hollow shaft, so that two ends of the inner cylinder rotating shaft 501 of the rotating magnetic system 5 can extend out of the outer cylinder rotating shaft 401 and be supported on the housing 3.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a miropowder dry-type magnet separator, includes casing (3), rotatable outer cylinder (4) and rotatory magnetism system (5) have been supported in casing (3), rotatory magnetism system (5) arrange with heart in outer cylinder (4), be provided with feed inlet (301) of tailing discharge opening and outside cylinder (4) pay-off on casing (3), its characterized in that: the tailing discharge opening department is provided with airlock valve (2), still be provided with air intake (302) and air outlet (303) on casing (3), air outlet (303) are in form the negative pressure on the local working face of outer cylinder (4), make outer cylinder (4) have concentrate sorting district and concentrate negative pressure district of unloading (H) on the circumferencial direction, concentrate in the concentrate negative pressure district of unloading (H) is along with air current discharge air outlet (303).
2. The micropowder dry magnetic separator according to claim 1, characterized in that the air outlet (303) extends into the casing (3) in a direction pointing towards the concentrate negative pressure discharge zone (H); a gap is arranged between the air outlet (303) and the outer roller (4), and the width of the gap is 0-20 mm.
3. The micropowder dry magnetic separator as claimed in claim 2, characterized in that the air outlet direction of the air outlet (303) is inclined relative to the horizontal plane, or the air outlet direction of the air outlet (303) is parallel to the horizontal plane.
4. The micropowder dry magnetic separator as claimed in claim 1, characterized in that the negative-pressure wind speed of the concentrate negative-pressure discharge zone (H) is 3-25 m/s.
5. The micropowder dry magnetic separator according to claim 1, characterized in that in cross section the concentrate separation zone comprises at least part of the working surface of the lower part of the outer drum (4); the tailing discharge opening is arranged below the outer roller (4), and the tailings separated in the concentrate separation area are discharged to the tailing discharge opening.
6. The micropowder dry magnetic separator as claimed in claim 1, characterized in that in cross section, the feed inlet (301) and the air outlet (303) are respectively applied to two opposite sides of the outer drum (4), and the air outlet (303) is located in the middle or in the middle upper part of one side of the outer drum (4).
7. The micropowder dry magnetic separator as claimed in claim 1, characterized in that the feed opening (301) extends into the housing (3) and the feed direction of the feed opening (301) is inclined downwards with respect to the horizontal.
8. The micropowder dry magnetic separator as claimed in any one of claims 1 to 7, characterized in that the outer drum (4) comprises an outer drum rotating shaft (401) driven to rotate by an outer drum power source (403) and an outer drum (402) connected with the outer drum rotating shaft (401); the outer cylinder power source (403) is a variable frequency motor; the outer cylinder power source (403) and the outer cylinder rotating shaft (401) are in transmission through a belt mechanism or a chain mechanism or a gear mechanism.
9. The micropowder dry magnetic separator as claimed in any one of claims 1 to 7, characterized in that the rotating magnetic system (5) comprises an inner cylinder rotating shaft (501) driven to rotate by an inner cylinder power source (503) and an inner cylinder (502) connected with the inner cylinder rotating shaft (501), the outer surface of the inner cylinder (502) is provided with a plurality of permanent magnets (504); the inner cylinder power source (503) is a variable frequency motor.
10. The micropowder dry magnetic separator of claim 9 wherein the permanent magnets (504) adjacent in the axial direction have the same polarity and the permanent magnets (504) adjacent in the circumferential direction have different polarities.
CN201922206936.0U 2019-12-10 2019-12-10 Micro powder dry magnetic separator Active CN211678221U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201922206936.0U CN211678221U (en) 2019-12-10 2019-12-10 Micro powder dry magnetic separator
PCT/CN2020/082716 WO2021114515A1 (en) 2019-12-10 2020-04-01 Micro-powder dry magnetic separator

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Application Number Priority Date Filing Date Title
CN201922206936.0U CN211678221U (en) 2019-12-10 2019-12-10 Micro powder dry magnetic separator

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WO (1) WO2021114515A1 (en)

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