CN110882841A - Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system - Google Patents
Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system Download PDFInfo
- Publication number
- CN110882841A CN110882841A CN201911260202.9A CN201911260202A CN110882841A CN 110882841 A CN110882841 A CN 110882841A CN 201911260202 A CN201911260202 A CN 201911260202A CN 110882841 A CN110882841 A CN 110882841A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- separation mechanism
- belt
- separator
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000006148 magnetic separator Substances 0.000 title claims abstract description 75
- 238000009837 dry grinding Methods 0.000 title claims abstract description 20
- 238000007885 magnetic separation Methods 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 93
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 76
- 239000011707 mineral Substances 0.000 claims abstract description 76
- 239000012141 concentrate Substances 0.000 claims abstract description 74
- 238000000926 separation method Methods 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 44
- 238000012216 screening Methods 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims 3
- 230000009977 dual effect Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 description 13
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
- B03C1/22—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with non-movable magnets
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a tandem type double-grading magnetic separator and a magnetic ore dry grinding and sorting system, and relates to the technical field of mineral magnetic separation. The tandem type double-grading magnetic separator comprises a rack and a belt magnetic separation mechanism for roughly separating mineral raw materials, wherein a feeding end of the belt magnetic separation mechanism is positioned below a feeding hole of the rack, a discharging end of the belt magnetic separation mechanism is provided with a magnetic roller magnetic system, a roller magnetic separation mechanism is arranged in the rack and is provided with an eccentric magnetic system which is eccentrically arranged, and rough concentrate roughly separated by the belt magnetic separation mechanism is finely separated by the roller magnetic separation mechanism. The tandem type double-grading magnetic separator can continuously perform roughing and fine separation, qualified concentrate and tailings can be obtained by one-time continuous separation of mineral raw materials, the overall structure of the magnetic separator is compact, the layout is reasonable, the operation is simple, and the production cost can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of mineral magnetic separation, in particular to a tandem type double-grading magnetic separator and a magnetic ore dry grinding and sorting system.
Background
The magnetic separator is mainly used for mineral separation production and is key mineral separation equipment for separating magnetic minerals, nonmagnetic minerals and minerals with magnetic differences in a magnetic separation mineral separation process. Magnetic separation is based on the magnetic difference of different components in the separated materials, and in a working magnetic field generated by magnetic separation equipment, magnetic mineral particles can be magnetically gathered to form magnetic groups or magnetic chains through the difference of magnetic field force and other acting force applied to different particles, and the magnetic groups or the magnetic chains can move towards magnetic poles under the action of magnetic force, so that the magnetic separation is the basis of magnetic separation. In the mineral separation industry, a magnetic separator is generally adopted to perform a magnetic mineral separation process under the condition of qualified grinding granularity. The method is limited by the grade of raw ore, and the domestic ore dressing operation generally uses dry magnetic separation equipment, wherein the most widely used magnetic separation equipment mainly comprises a roller magnetic separator, a belt magnetic separator and the like.
Because the minerals have the characteristics of non-uniformity in flow, non-uniformity in grade and the like, the raw mineral materials cannot be separated from the magnetic substances in the minerals through one-time separation, and the finished products meet the high-quality requirements of qualified concentrates and qualified tailings, so that a production unit needs to configure a plurality of magnetic separation devices in series and parallel connection to perform rough separation and fine separation of the minerals respectively, and the configuration requirements of plants and equipment are high.
Disclosure of Invention
The invention aims to: the invention provides a tandem double-grading magnetic separator and a magnetic ore dry grinding and sorting system, aiming at the problem that a plurality of magnetic separation devices are required to be configured for roughing and sorting minerals in a mineral separation process.
The technical scheme adopted by the invention is as follows:
the tandem type double-grading magnetic separator comprises a rack and a belt magnetic separation mechanism for roughing mineral raw materials, wherein a feeding end of the belt magnetic separation mechanism is located below a feeding hole of the rack, a discharging end of the belt magnetic separation mechanism is provided with a magnetic roller magnetic system, a roller magnetic separation mechanism is arranged in the rack and is provided with an eccentric magnetic system in eccentric arrangement, and rough concentrates roughed by the belt magnetic separation mechanism are refined by the roller magnetic separation mechanism.
Due to the arrangement, after the mineral raw materials enter the magnetic separator, rough concentration and fine concentration can be continuously carried out at one time, wherein the belt magnetic separation mechanism is used for carrying out rough concentration on the mineral raw materials and separating rough concentrate and tailings, and the drum-type magnetic separator is used for carrying out fine concentration on the rough concentrate and separating the rough concentrate into concentrate and middlings. The tandem type double-grading magnetic separator disclosed by the invention combines the characteristics of a drum-type magnetic separator and a belt magnetic separator, optimizes the layout, and has a compact structure and is convenient and fast to operate.
Further, the magnetic field intensity of the eccentric magnetic system is smaller than that of the magnetic roller magnetic system. The magnetic field intensity of the eccentric magnetic system is smaller than that of the magnetic roller, so that low-grade magnetic minerals and high-grade magnetic minerals which cannot be separated by the magnetic roller magnetic system in the rough concentrate can be effectively separated, and the concentrate grade is improved.
Furthermore, an enrichment magnetic system is arranged in the belt magnetic separation mechanism, and the magnetic field range of the enrichment magnetic system covers at least part of the conveying surface at the upper part of the belt magnetic separation mechanism, so that the mineral raw materials passing through the magnetic field of the enrichment magnetic system are layered according to the grade; the enrichment magnetic system is arranged along the conveying direction of the belt magnetic separation mechanism.
Due to the arrangement, when the magnetic field passes through the enrichment magnetic system, the mineral raw materials are paved on the upper conveying surface of the belt magnetic separation mechanism under the action of magnetic force, the magnetic minerals move towards the direction close to the conveying surface, so that the magnetic minerals are enriched to the lower part of the material layer, the non-magnetic minerals are enriched to the upper part of the material layer, the magnetic minerals can form a magnetic chain under the action of the magnetic roller magnetic system conveniently, the separation efficiency is improved, and the grade of tailings is reduced.
Further, the enriched magnetic system is a flat magnetic system or a magnetic carrier roller group; the magnetic field intensity of the enriched magnetic system is between the eccentric magnetic system and the magnetic roller magnetic system. The magnetic field intensity of the enrichment magnetic system is between the eccentric magnetic system and the magnetic roller magnetic system, the enrichment magnetic system guides the magnetic minerals to the lower part of the material layer, the magnetic field intensity is larger than that of the magnetic roller magnetic system of the enrichment magnetic system to adsorb and sort the magnetic minerals at the lower part of the material layer, and the nonmagnetic minerals are thrown to effectively reduce the grade of tailings.
Furthermore, in order to improve the grade of the concentrate and prevent the mineral raw materials from forming magnetic groups or magnetic chains on the working surface of the roller magnetic separation mechanism, the eccentric magnetic system forms an alternating magnetic field on the working surface of the roller magnetic separation mechanism. Magnetic stirring is generated when the magnetic clusters or magnetic chains pass through the alternating magnetic field, and low-grade magnetic minerals, gangue and other non-magnetic minerals mixed in the magnetic clusters or magnetic chains fall off in stirring and overturning, so that the grade of the concentrate is improved. The eccentric magnetic system is a rotating magnetic system, namely the eccentric magnetic system is driven by a power source to rotate.
Further, the magnetic system of the magnetic roller at the discharge end of the belt magnetic separation mechanism is a fixed magnetic system, and in order to obtain a larger ore dressing area and improve the sorting efficiency, the magnetic wrap angle of the magnetic roller magnetic system is 150-200 degrees.
Further, in order to facilitate ore discharge and ore conveying of the belt magnetic separation mechanism and the roller magnetic separation mechanism, a tailing hopper is arranged on the rack and is positioned below the discharge end of the belt magnetic separation mechanism; the belt magnetic separation mechanism conveys tailings to a tailing hopper through a tailing chute; the belt magnetic separation mechanism conveys coarse concentrate to the roller magnetic separation mechanism through a concentrate chute; and the rack is provided with a middling hopper and a concentrate hopper, and the middling hopper and the concentrate hopper respectively receive middling and concentrate separated by the roller magnetic separation mechanism.
Furthermore, a rough separation material distribution plate capable of swinging is arranged below the discharging end of the belt magnetic separation mechanism, and the belt magnetic separation mechanism adjusts the material distribution position through the rough separation material distribution plate. Due to the arrangement, the material distribution positions of the rough concentrate and the tailings can be adjusted through the deflection rough concentration material distribution plate according to different requirements of the mineral separation process.
Furthermore, a swingable selection material distributing plate is arranged below the roller magnetic separation mechanism, and the roller magnetic separation mechanism adjusts the material distributing position through the selection material distributing plate. Due to the arrangement, the material distribution positions of the concentrate and the middlings can be adjusted through the deflection fine-selection material distribution plate according to different requirements of the ore dressing process.
Furthermore, a flow regulating valve is arranged at the lower end of the feeding hole. The adjustable magnet separator of flow control valve is at the uniform velocity feeding, prevents that the non-uniform velocity feeding from causing the tailing grade of belt magnetic separation mechanism to improve.
The magnetic ore dry grinding and sorting system comprises the high-pressure roller mill and the magnetic separator, wherein a feed opening of the high-pressure roller mill is connected with a feed opening of the magnetic separator, a concentrate opening and a tailing opening of the magnetic separator are respectively connected with a concentrate hopper and a tailing hopper, and a middle ore opening of the magnetic separator is connected with the feed opening of the high-pressure roller mill.
Further, be provided with screening plant between high pressure roller mill and the magnet separator, high pressure roller mill feed opening is connected to screening plant's feed inlet, the coarse mineral aggregate of screening plant screening is carried to high pressure roller mill feed inlet, the fine mineral aggregate of screening plant screening gets into the magnet separator feed inlet.
Further, the granularity of the raw ore entering the high-pressure roller mill is 0-60 mm; the processing granularity of the magnetic separator is 0-20 mm.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the tandem type double-grading magnetic separator provided by the invention separates rough concentrate and tailings by using the magnetic system of the magnetic roller, separates concentrate and middlings from the rough concentrate by using the magnetic system of the magnetic roller, and obtains qualified concentrate and tailings by one-time continuous separation of mineral raw materials entering the magnetic separator. The magnetic ore dry grinding and sorting system applying the series double-grading magnetic separator has the advantages of low energy loss and high efficiency.
Drawings
FIG. 1 is a schematic structural view of a series double-stage magnetic separator according to the present invention;
FIG. 2 is a process flow diagram of a first embodiment of the magnetic ore dry grinding and sorting system of the present invention;
FIG. 3 is a process flow diagram of a second embodiment of the magnetic ore dry milling and sorting system of the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of a magnetic separator of the magnetic ore dry grinding and sorting system of the present invention;
the labels in the figure are: 1-a magnetic separator; 2-a screening device; 3-high pressure roller mill; 4-a storage bin; 5-a concentrate hopper; 6-a tailing hopper; 10-a frame; 20-belt magnetic separation mechanism; 30-roller magnetic separation mechanism; 101-a feed inlet; 102-tailing bucket; 103-middle ore hopper; 104-concentrate bucket; 105-a tailing chute; 106-concentrate chute; 107-rough separation material separation plate; 108-fine selecting and distributing plate; 109-flow regulating valve; 201-magnetic roller magnetic system; 202-enriching the magnetic system; 203-driving roll; 204-driven rollers; 205-a belt; 301-eccentric magnetic system; 302-outer drum.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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.
Example 1
According to the tandem type double-grading magnetic separator disclosed by the embodiment, the tandem type double-grading magnetic separator comprises a rack 10, a belt magnetic separation mechanism 20 and a roller magnetic separation mechanism 30, wherein the belt magnetic separation mechanism 20 and the roller magnetic separation mechanism 30 are installed in the rack 10. The belt magnetic separation mechanism 20 can perform rough separation on mineral raw materials, the feeding material of the belt magnetic separation mechanism 20 receives the mineral raw materials entering from the feeding hole 101, and the discharging end of the belt magnetic separation mechanism 20 is provided with a magnetic roller magnetic system 201 for rough separation; the roller magnetic separation mechanism 30 receives the rough concentrate discharged from the discharge end of the belt magnetic separation mechanism 20 and carries out concentration on the rough concentrate, the roller magnetic separation mechanism 30 is provided with an eccentric magnetic system 301 which is eccentrically arranged, and the roller magnetic separation mechanism 30 with the eccentric magnetic system 301 can carry out continuous ore separation and automatic ore discharge. Preferably, the magnetic separator is arranged to be fed from the top, and the feeding hole 101 is arranged at the top of the frame 10; the belt magnetic separation mechanism 20 is arranged below the feeding port 101 of the rack 10, and the roller magnetic separation mechanism 30 is arranged below the discharging end of the belt magnetic separation mechanism 20.
Specifically, the belt magnetic separation mechanism 20 includes a driving roller 203, a driven roller 204 and a belt 205, the belt 205 is sleeved on the peripheries of the driving roller 203 and the driven roller 204, and the driving roller 203 is driven by a power source to rotate, so as to drive the belt 205 and the driven roller 204 to rotate. The magnetic roller magnetic system 201 can be arranged in the driving roller 203 or the driven roller 204, in this embodiment, as shown in fig. 1, the magnetic roller magnetic system 201 is preferably arranged in the driven roller 204, so that the driven roller 204 is located at the discharging end of the belt magnetic separation mechanism 20, and the driving roller 203 is located at the feeding end of the belt magnetic separation mechanism 20. The magnetic roller magnetic system 201 is arranged at the discharging end of the conveying mechanism of the belt 205, the magnetic roller magnetic system 201 forms a strong magnetic area and a weak magnetic area on the working surface of the discharging end along the conveying direction of the belt 205, the strong magnetic area is positioned at the arc-shaped section of the working surface, after the magnetic roller magnetic system enters the strong magnetic area, magnetic minerals in mineral raw materials are adsorbed on the working surface, non-magnetic minerals are separated from the working surface under the action of gravity, the magnetic minerals enter the weak magnetic area along the conveying direction of the belt 205 and then are separated from the working surface, and therefore the purpose that tailings are removed by the mineral raw materials for roughing is achieved.
Specifically, the drum magnetic separation mechanism 30 includes an outer drum 302 and an eccentric magnetic system 301 eccentrically disposed in the outer drum 302. In one embodiment, the eccentric magnetic system 301 and the outer roller 302 can rotate under the driving of their respective power sources, and the eccentric magnetic system 301 and the outer roller 302 rotate relatively, and both can rotate in the same direction or in opposite directions; in another embodiment, the eccentric magnetic system 301 is fixed relative to the frame 10, and the outer drum 302 is driven by the power source to rotate relative to the eccentric magnetic system 301, so that the eccentric magnetic system 301 and the outer drum 302 rotate relative to each other. The eccentric magnetic system 301 arranged eccentrically forms a weak magnetic area and a strong magnetic area on the working surface of the outer roller 302, the rough concentrate falls to the strong magnetic area of the working surface of the outer roller 302 from the discharge end of the belt magnetic separation mechanism 20, the high-grade magnetic mineral in the rough concentrate is adsorbed on the working surface of the strong magnetic area, the low-grade magnetic mineral in the rough concentrate directly falls, and after the high-grade magnetic mineral enters the weak magnetic area of the working surface along with the rotation of the outer roller 302, the high-grade magnetic mineral cannot resist the self gravity and fall, so that the purpose of sorting qualified concentrates is achieved.
The magnetic system 201 of the magnetic roller of the belt magnetic separation mechanism 20 may adopt a concentric circle magnetic system, or may adopt a concentric cylindrical magnetic system or an eccentric cylindrical magnetic system. It should be noted that the concentric magnetic lack system is a fixed magnetic system, the magnetic wrap angle is less than 360 degrees, the concentric magnetic lack system is concentrically arranged in the roller, and the roller and the magnetic system rotate relatively; the concentric cylindrical magnetic system is a rotating magnetic system, the magnetic wrap angle is 360 degrees, and the concentric cylindrical magnetic system is concentrically arranged in the roller and rotates along with the roller; the eccentric cylindrical magnetic system can be a fixed magnetic system or a rotating magnetic system, the magnetic wrap angle is 360 degrees, the eccentric cylindrical magnetic system is eccentrically arranged in the roller, and the eccentric roller and the magnetic system rotate relatively under the drive of respective power sources. In order to control the production and maintenance cost, as shown in fig. 1, the magnetic roller magnetic system 201 in this embodiment preferably adopts a concentric magnetic-lack system, the magnetic wrap angle of the magnetic roller magnetic system 201 is 150-.
The eccentric magnetic system 301 of the drum magnetic separation mechanism 30 includes a plurality of magnetic poles arranged in a cylindrical shape. In this embodiment, the eccentric magnetic system 301 forms an alternating magnetic field on the working surface of the drum magnetic separation mechanism 30. Specifically, adjacent magnetic poles of the eccentric magnetic system 301 in the circumferential direction are different, adjacent magnetic poles in the axial direction are the same, the high-grade magnetic mineral is adsorbed on the outer drum 302 under the action of the magnetic field of the eccentric magnetic system 301, and the magnetic mineral passes through the alternating magnetic field with the periodically changed magnetic field direction in the process of moving along the circumferential direction, so that the high-grade magnetic mineral is turned over and breaks up magnetic clusters, low-grade magnetic mineral is prevented from being mixed in the high-grade magnetic mineral, and the grade of concentrate is improved.
Optionally, an enrichment magnetic system 202 is arranged in the belt magnetic separation mechanism 20, and the magnetic field range of the enrichment magnetic system 202 covers at least part of the conveying surface at the upper part of the belt magnetic separation mechanism 20, so that ores passing through the magnetic field of the enrichment magnetic system 202 are layered according to grade; the enrichment magnetic system 202 is arranged along the conveying direction of the belt magnetic separation mechanism 20. Wherein, the enriched magnetic system 202 can adopt a flat magnetic system or a magnetic carrier roller group.
Specifically, the belt 205 of the belt magnetic separation mechanism 20 is provided with an enrichment magnetic system 202 inside, the enrichment magnetic system 202 is close to the upper conveying surface of the belt 205, so that the magnetic field range of the enrichment magnetic system 202 covers at least part of the upper conveying surface, the enrichment magnetic system 202 is used for pre-enriching the magnetic minerals in the mineral raw materials to the lower part of the material layer and the non-magnetic minerals to the upper part of the material layer by using the magnetic force, thereby facilitating the magnetic minerals to form magnetic chains after entering the magnetic field range of the magnetic roller magnetic system 201, and reducing the grade of tailings. The enrichment magnetic system 202 may use a flat magnetic system or a magnetic roller set arranged along the conveying direction of the belt 205, and both the flat magnetic system and the magnetic roller set can play a role of forming an enrichment magnetic field on the upper conveying surface. The magnetic carrier roller group can not only support the upper conveying surface of the belt 205, but also reduce the friction between the enriched magnetic system and the belt and prolong the service life.
Further, in the present embodiment, the magnetic field strength of the eccentric magnetic system 301 is smaller than the magnetic field strength of the magnetic roller magnetic system 201; the magnetic field intensity of the enriched magnetic system 202 is between that of the magnetic roller magnetic system 201 and the eccentric magnetic system 301. Specifically, the magnetic field intensity of the magnetic roller magnetic system 201 is greater than that of the enriched magnetic system 202, so that the magnetic roller magnetic system 201 achieves a better sorting effect, and magnetic minerals enriched to the lower part of the material layer are easier to form a magnetic chain; the magnetic field intensity of the eccentric magnetic system 301 is smaller than that of the magnetic system 201 of the magnetic roller, so that high-grade magnetic minerals in the rough concentrate can be effectively separated, and the concentrate grade is guaranteed.
In order to optimize the structural arrangement of the magnetic separator, optionally, a tailing hopper 102 which is matched with the discharge end of the belt magnetic separation mechanism 20 for ore discharge is arranged on the rack 10, the tailing hopper 102 is preferably arranged below the discharge end of the belt magnetic separation mechanism 20, the belt magnetic separation mechanism 20 roughly separates the mineral raw materials into rough concentrate and tailings, the tailings are discharged to the tailing hopper 102, and the tailings collected by the tailing hopper 102 are discharged out of the magnetic separator. Tailings separated by the belt magnetic separation mechanism 20 can directly fall to the tailing hopper 102 for ore discharge, and a tailing chute 105 communicated with the tailing hopper 102 can also be preferably arranged for ore discharge; accordingly, the rough concentrate sorted by the belt magnetic separation mechanism 20 can directly fall into the feeding range of the roller magnetic separation mechanism 30, and a concentrate chute 106 with the lower end arranged in the feeding range of the roller magnetic separation mechanism 30 can also be preferably arranged for ore discharge. The arrangement of the concentrate chute 106 and the tailing chute 105 can be optimized to prevent the ore from being mixed after being sorted. The rack 10 is provided with a middling hopper 103 and a concentrate hopper 104 which are matched with the roller magnetic separation mechanism 30 for ore discharge, the middling hopper 103 and the concentrate hopper 104 are sequentially arranged below the outer roller 302 along the rotation direction of the outer roller, and middles and concentrates separated by the roller magnetic separation mechanism 30 are respectively gathered and discharged in the middling hopper 103 and the concentrate hopper 104. The roller magnetic separation mechanism 30 can directly discharge materials to the concentrate hopper 104 and the middling hopper 103, and can also discharge materials and discharge ores by arranging a chute matched with the concentrate hopper 104 and the middling hopper 103.
Optionally, a swingable rough separation material distribution plate 107 is arranged below the discharging end of the belt magnetic separation mechanism 20, and the rough separation material distribution plate 107 is located in the discharging range of the belt magnetic separation mechanism 20.
Specifically, the upper end of the concentrate chute 106 and the upper end of the tailing chute 105 are respectively connected with the lower end of a roughing separation plate 107, and the roughing separation plate 107 adjusts the separation positions of the rough concentrate and the tailings through deflection. Under the influence of various factors such as the magnetic strength of the mineral raw materials, the granularity of useful minerals and gangue minerals, the embedding mode of the useful minerals and the like, a proper mineral separation process needs to be selected according to the properties of the minerals, the material distribution position of the separated minerals is adjusted, and the material distribution position of rough concentrate and tailings can be conveniently adjusted by swinging the rough separation material distribution plate 107, so that the requirements of different mineral separation processes are met. Similarly, a swinging concentration distributing plate 108 is arranged below the roller magnetic separation mechanism 30, the concentration distributing plate 108 is positioned in the discharging range of the roller magnetic separation mechanism 30, and the distribution positions of middlings and concentrates can be adjusted by swinging the concentration distributing plate 108. Specifically, the upper end of the middle ore hopper 103 and the upper end of the concentrate hopper 104 are respectively connected with the lower ends of the fine separation plates 108.
Optionally, a flow regulating valve 109 is disposed at the lower end of the feeding port 101 of the frame 10. The flow regulating valve 109 is used for preventing the material accumulated at the feed inlet 101 from being fed at a non-uniform speed, and the non-uniform feeding makes the magnetic minerals in the ore raw material not effectively sorted in the ore dressing area, namely, the magnetic minerals are discharged along with the non-magnetic minerals, so that the sorting efficiency is reduced.
Example 2
Referring to fig. 2, the magnetic ore dry grinding and sorting system disclosed in the present embodiment includes a high-pressure roller mill 3 and a magnetic separator 1, the feed opening of the high-pressure roller mill 3 is the feed opening of the magnetic separator 1, the magnetic separator 1 sorts the ground raw ore of the high-pressure roller mill 3 into concentrate, middlings and tailings, the concentrate hopper of the magnetic separator 1 is connected to a concentrate hopper 5, the middlings hopper of the magnetic separator 1 is connected to the feed opening of the high-pressure roller mill 3, and the tailings hopper of the magnetic separator 1 is connected to a tailings hopper 6.
Specifically, raw ore in the bin 4 enters from a feed port of the high-pressure roller mill 3, ground raw ore of the high-pressure roller mill 3 enters the magnetic separator 1 through a feed port of the high-pressure roller mill, fine materials are separated into concentrate, middlings and tailings by the magnetic separator 1, and the concentrate and the tailings separated by the magnetic separator 1 are respectively discharged to a concentrate hopper 5 and a tailing hopper 6. The middlings separated by the magnetic separator 1 are returned to the feed inlet of the high-pressure roller mill 3 through the stock bin 4 for circular grinding and separation.
In the first embodiment, the structure of the magnetic separator 1 of the magnetic ore dry grinding and sorting system is the same as that of the embodiment 1; in the second embodiment, the magnetic separator 1 of the magnetic ore dry grinding and sorting system is a magnetic classification preselection machine, which comprises a frame 10, an outer roller 302 and an eccentric magnetic system 301 arranged in a cylindrical shape, as shown in fig. 4, the eccentric magnetic system 301 is eccentrically arranged in the outer roller 302, the eccentric magnetic system 301 and the outer roller 302 rotate relatively, the magnetic field intensity of the eccentric side working surface of the outer roller 302 is greater than that of the non-eccentric side working surface of the outer roller 302, the magnetic field intensity of the lower working surface of the outer roller 302 is gradually reduced along the rotation direction of the outer roller 302, and the tailing bucket 102, the middling bucket 103 and the concentrate bucket 104 are sequentially arranged on the frame 10 below the outer roller 302 from a strong magnetic area to a weak magnetic area. Both the above two magnetic separators can achieve the effect of one-time continuous separation, and the first specific implementation mode is preferably adopted in the embodiment.
Optionally, the particle size of the raw ore processed by the high-pressure roller mill is 0-60 mm, preferably 0-30 mm; the magnetic separator processing granularity of the magnetic ore dry grinding and sorting system is 0-20 mm, and preferably 0-6 mm.
Example 3
The magnetic ore dry grinding and sorting system disclosed in the embodiment is described with reference to fig. 3, which comprises a high-pressure roller mill 3, a screening device 2 and a magnetic separator 1, wherein a feed opening of the high-pressure roller mill 3 is connected with a feed opening of the screening device 2, a coarse material opening of the screening device 2 is connected with a feed opening of the high-pressure roller mill 3, and a fine material opening of the screening device 2 is connected with a feed opening of the magnetic separator 1; the magnetic separator 1 separates the fine materials screened by the screening device 2 into concentrate, middlings and tailings, a concentrate port of the magnetic separator 1 is connected with a concentrate hopper 5, a middlings port of the magnetic separator 1 is connected with a feed inlet of the high-pressure roller mill 3, and a tailings port of the magnetic separator 1 is connected with a tailings hopper 6.
Specifically, raw ore in the bin 4 enters from a feed port of the high-pressure roller mill 3, and ground raw ore of the high-pressure roller mill 3 enters the screening device 2 through a feed port of the high-pressure roller mill; the coarse material that screening plant 2 sieved does not reach magnet separator 1 and handles the requirement, the coarse material that screening plant 2 sieved is returned by high-pressure roller mill 3 feed inlet and is carried out the circulation grinding, the fine material that screening plant 2 sieved accords with magnet separator 1 and handles the requirement, the fine material that screening plant 2 sieved gets into magnet separator 1 by magnet separator 1 feed inlet, magnet separator 1 is selected separately the fine material and is concentrate, middlings, tailing, the concentrate and the tailing that magnet separator 1 was selected separately are unloaded to concentrate hopper 5, tailing hopper 6 respectively. The middlings separated by the magnetic separator 1 are returned to the high-pressure roller mill 3 through a feed inlet for circulating grinding and separation.
In the first embodiment, the structure of the magnetic separator 1 of the magnetic ore dry grinding and sorting system is the same as that of the embodiment 1; in the second embodiment, the magnetic separator 1 of the magnetic ore dry grinding and sorting system is a magnetic classification preselection machine, which comprises a frame 10, an outer roller 302 and an eccentric magnetic system 301 arranged in a cylindrical shape, as shown in fig. 4, the eccentric magnetic system 301 is eccentrically arranged in the outer roller 302, the eccentric magnetic system 301 and the outer roller 301 rotate relatively, the magnetic field intensity of the eccentric side working surface of the outer roller 302 is greater than that of the non-eccentric side working surface of the outer roller 302, the magnetic field intensity of the lower working surface of the outer roller 302 is gradually reduced along the rotation direction of the outer roller 302, and the tailing bucket 102, the middling bucket 103 and the concentrate bucket 104 are sequentially arranged on the frame 10 below the outer roller 302 from a strong magnetic area to a weak magnetic area. Both the above two magnetic separators can achieve the effect of one-time continuous separation, and the first specific implementation mode is preferably adopted in the embodiment.
Optionally, the particle size of the raw ore processed by the high-pressure roller mill is 0-60 mm, preferably 0-30 mm; the magnetic separator processing granularity of the magnetic ore dry grinding and sorting system is 0-20 mm, and preferably 0-6 mm.
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 for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a two hierarchical magnet separators of serial-type, includes frame (10) and is used for carrying out belt magnetic separation mechanism (20) of rough concentration to mineral raw materials, the pan feeding end of belt magnetic separation mechanism (20) is located feed inlet (101) below of frame (10), the discharge end of belt magnetic separation mechanism (20) is provided with magnetism roller magnetism system (201), its characterized in that, be provided with cylinder magnetic separation mechanism (30) in frame (10), cylinder magnetic separation mechanism (30) have eccentric magnetism system (301) that eccentric was arranged, and the rough concentrate of belt magnetic separation mechanism (20) rough concentration carries out choice through cylinder magnetic separation mechanism (30).
2. A series double-stage magnetic separator as claimed in claim 1 wherein the magnetic field strength of the eccentric magnetic system (301) is less than the magnetic field strength of the magnetic roll magnetic system (201).
3. The series-type double-graded magnetic separator as recited in claim 2, wherein the belt magnetic separation mechanism (20) is provided with a magnetic enrichment system (202), the magnetic field range of the magnetic enrichment system (202) covers at least part of the conveying surface of the upper part of the belt magnetic separation mechanism (20), so that the mineral raw materials passing through the magnetic field of the magnetic enrichment system (202) are graded according to grades; the enriched magnetic system (202) is arranged along the conveying direction of the belt magnetic separation mechanism (20).
4. The in-line dual stage magnetic separator as recited in claim 3 wherein said enrichment magnet train (202) is a flat plate magnet train or a set of magnetic idler rolls; the magnetic field intensity of the enriched magnetic system (202) is between that of the eccentric magnetic system (301) and that of the magnetic roller magnetic system (201).
5. The series double-stage magnetic separator as claimed in any one of claims 1 to 4, wherein the eccentric magnetic system (301) forms an alternating magnetic field on the working surface of the drum magnetic separator (30); the eccentric magnetic system (301) is a rotating magnetic system.
6. The series-type double-graded magnetic separator as claimed in any one of claims 1 to 4, wherein the magnetic wrap angle of the magnetic roller magnetic system (201) is 150-200 °; the magnetic system (201) of the magnetic roller is a fixed magnetic system.
7. The in-line double-stage magnetic separator as claimed in any one of claims 1 to 4, wherein the machine frame (10) is provided with a tailing hopper (102), and the tailing hopper (102) is positioned below the discharge end of the belt magnetic separator (20); the belt magnetic separation mechanism (20) conveys tailings to a tailing hopper (102) through a tailing chute (105); the belt magnetic separation mechanism (20) conveys coarse concentrate to the roller magnetic separation mechanism (30) through a concentrate chute (106); the machine frame (10) is provided with a middling hopper (103) and a concentrate hopper (104), and the middling hopper (103) and the concentrate hopper (104) respectively receive middling and concentrate separated by the roller magnetic separation mechanism (30).
8. The series double-grading magnetic separator as claimed in any one of claims 1 to 4, wherein a swingable rough separation material separation plate (107) is arranged below the discharge end of the belt magnetic separation mechanism (20), and the belt magnetic separation mechanism (20) adjusts the material separation position through the rough separation material separation plate (107); a fine separation plate (108) capable of swinging is arranged below the roller magnetic separation mechanism (30), and the roller magnetic separation mechanism (30) adjusts the material separation position through the fine separation plate (108); the lower end of the feed inlet (101) is provided with a flow regulating valve (109).
9. A magnetic ore dry grinding and sorting system is characterized by comprising a high-pressure roller mill (3) and the magnetic separator (1) as claimed in any one of claims 1 to 8, wherein a feed opening of the high-pressure roller mill (3) is connected with a feed opening of the magnetic separator (1), a concentrate hopper and a tailing hopper of the magnetic separator (1) are respectively connected with a concentrate hopper (5) and a tailing hopper (6), and a middling hopper of the magnetic separator (1) is connected with the feed opening of the high-pressure roller mill (3).
10. The magnetic ore dry grinding and sorting system according to claim 9, characterized in that a screening device (2) is arranged between the high-pressure roller mill (3) and the magnetic separator (1), a feed inlet of the screening device (2) is connected with a feed opening of the high-pressure roller mill (3), the coarse ore material screened by the screening device (2) is conveyed to a feed inlet of the high-pressure roller mill (1), and the fine ore material screened by the screening device (2) enters the feed inlet of the magnetic separator (1); the granularity of the raw ore entering the high-pressure roller mill (3) is 0-60 mm; the processing granularity of the magnetic separator (1) is 0-20 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260202.9A CN110882841B (en) | 2019-12-10 | 2019-12-10 | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system |
| PCT/CN2020/082719 WO2021114517A1 (en) | 2019-12-10 | 2020-04-01 | Dual-stage combined magnetic separator, and dry grinding and separation system for magnetic mineral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260202.9A CN110882841B (en) | 2019-12-10 | 2019-12-10 | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110882841A true CN110882841A (en) | 2020-03-17 |
| CN110882841B CN110882841B (en) | 2024-06-18 |
Family
ID=69751325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911260202.9A Active CN110882841B (en) | 2019-12-10 | 2019-12-10 | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110882841B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058737A (en) * | 2021-03-20 | 2021-07-02 | 迁安市德泰工贸有限公司 | Magnetic separator and magnetic concentrate separation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037343A1 (en) * | 2006-09-28 | 2008-04-03 | RWTH- Rheinisch-Westfälische Technische Hochschule Aachen | Method and device for separating magnetisable materials from a solids mixture |
| CN201124118Y (en) * | 2007-11-27 | 2008-10-01 | 山东华特磁电科技股份有限公司 | Permanent magnetism dry-type magnetic separater |
| CN103203283A (en) * | 2013-04-23 | 2013-07-17 | 成都利君实业股份有限公司 | Multi-force-field dry magnetic separator |
| CN203408789U (en) * | 2013-07-24 | 2014-01-29 | 陕西三沅重工发展股份有限公司 | Multistage magnetic separation type dry separation machine |
| CN205761742U (en) * | 2016-05-31 | 2016-12-07 | 天津市东宇顺油业有限公司 | A kind of cylinder roll-type magnetic separator |
| CN211488118U (en) * | 2019-12-10 | 2020-09-15 | 成都利君实业股份有限公司 | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system |
-
2019
- 2019-12-10 CN CN201911260202.9A patent/CN110882841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037343A1 (en) * | 2006-09-28 | 2008-04-03 | RWTH- Rheinisch-Westfälische Technische Hochschule Aachen | Method and device for separating magnetisable materials from a solids mixture |
| CN201124118Y (en) * | 2007-11-27 | 2008-10-01 | 山东华特磁电科技股份有限公司 | Permanent magnetism dry-type magnetic separater |
| CN103203283A (en) * | 2013-04-23 | 2013-07-17 | 成都利君实业股份有限公司 | Multi-force-field dry magnetic separator |
| CN203408789U (en) * | 2013-07-24 | 2014-01-29 | 陕西三沅重工发展股份有限公司 | Multistage magnetic separation type dry separation machine |
| CN205761742U (en) * | 2016-05-31 | 2016-12-07 | 天津市东宇顺油业有限公司 | A kind of cylinder roll-type magnetic separator |
| CN211488118U (en) * | 2019-12-10 | 2020-09-15 | 成都利君实业股份有限公司 | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058737A (en) * | 2021-03-20 | 2021-07-02 | 迁安市德泰工贸有限公司 | Magnetic separator and magnetic concentrate separation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110882841B (en) | 2024-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110882840B (en) | Stacked double-grading magnetic separator and magnetic ore dry grinding and sorting system | |
| CN103331208B (en) | The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator | |
| CN104888960B (en) | The magnetic of the red composite ore of fine grain teeth cloth magnetic floats sorting process | |
| CN105880003B (en) | A kind of magnetic iron ore is without screening high pressure roller mill dry type magnetic separation method | |
| CN105772218B (en) | A kind of iron ore circulation classification beneficiation method and the dry-dressing machine applied to this method | |
| WO2021114516A1 (en) | Magnetic ore dry grinding and sorting system | |
| CN109351467A (en) | A kind of sorting process based on the iron mineral disseminated grain size processing red mixed ore of magnetic | |
| WO2021114517A1 (en) | Dual-stage combined magnetic separator, and dry grinding and separation system for magnetic mineral | |
| CN110586315B (en) | Full-dry type iron ore sorting method | |
| CN104874478A (en) | Vibrating magnetic field screening machine | |
| CN211488118U (en) | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system | |
| CN105562200A (en) | Multi-feeding-belt magnetic separator | |
| CN211678135U (en) | Magnetic ore dry grinding and sorting system | |
| CN108745640B (en) | Gradient magnetic gravity centrifugal screening chute, equipment and method for magnetic minerals | |
| CN211488117U (en) | Stacked double-classification magnetic separator and magnetic ore dry grinding and sorting system | |
| CN102357403A (en) | New magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore | |
| CN110882841B (en) | Tandem type double-grading magnetic separator and magnetic ore dry grinding and sorting system | |
| CN207102884U (en) | Drum magnet separator with crushing and dispersing functions | |
| CN218742467U (en) | High-pressure roller mill closed-circuit screening preselection device | |
| CN106733165A (en) | Drum magnet separator with crushing and dispersing functions | |
| CN105944830A (en) | Magnetic separator | |
| CN202200430U (en) | Waste tire pulverizing system | |
| CN211755948U (en) | Lean magnetite dry and wet combined preselection system | |
| CN205851101U (en) | A kind of magnetic separator | |
| CN205570540U (en) | Many feeding belt formula magnet separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |