CN111185301B - Dry-type environment-friendly ore dressing system and ore dressing method - Google Patents
Dry-type environment-friendly ore dressing system and ore dressing method Download PDFInfo
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- CN111185301B CN111185301B CN202010026342.6A CN202010026342A CN111185301B CN 111185301 B CN111185301 B CN 111185301B CN 202010026342 A CN202010026342 A CN 202010026342A CN 111185301 B CN111185301 B CN 111185301B
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- 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
- B03C1/30—Combinations with other devices, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- 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
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- 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
- B03C1/18—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation
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- 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
- B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
Abstract
The invention discloses a dry type environment-friendly beneficiation method, which comprises the following steps: (1) crushing raw ore, primarily selecting by using a magnetic pulley, and removing first tailings to obtain first mineral; (2) crushing the first mineral, then carrying out primary dry sorting, and removing the second tailings to obtain a second mineral; (3) screening the second minerals, and carrying out wind power separation on the screened second minerals to divide the second minerals into coarse fraction minerals and fine fraction minerals; (4) and carrying out secondary dry separation on the fine-fraction minerals to obtain the required concentrate. According to the beneficiation method, the magnetic concentrate in the raw ore can be effectively and thoroughly separated through the matching of primary dry separation and secondary separation and the assistance of primary separation by the magnetic pulley and wind separation, and the grade of the separated magnetic concentrate is greatly improved, so that the grade of the concentrate can be greatly improved to 55-65%; the beneficiation system based on the beneficiation method is simple in structure and convenient to operate.
Description
Technical Field
The invention relates to the field of magnetite beneficiation, and particularly relates to a dry type environment-friendly beneficiation system and a beneficiation method.
Background
Mineral separation is a process of crushing and grinding ores according to physical and chemical properties of different minerals in the ores, separating useful minerals from gangue minerals by adopting a gravity separation method, a flotation method, a magnetic separation method, an electric separation method and the like, separating various symbiotic (associated) useful minerals from each other as much as possible, and removing or reducing harmful impurities to obtain raw materials required by smelting or other industries.
However, the current magnetite beneficiation method, which is usually a wet separation process, requires a large amount of water, and a tailings pond must be provided for storing the tailings, resulting in environmental pollution. In addition, the existing process can only separate magnetic minerals and non-magnetic minerals which are obviously separated from ores, and for minerals which are mixed together due to the phenomena of magnetic agglomeration and magnetic wrapping or weakly magnetic minerals which are wrapped in the non-magnetic minerals and difficult to adsorb, the separation effect is poor, so that part of the magnetic minerals are directly discarded along with the non-magnetic minerals, and resources are greatly wasted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a dry type environment-friendly beneficiation method which is thorough in separation and good in separation effect.
In order to achieve the purpose, the invention adopts the technical scheme that:
a beneficiation process, comprising the steps of:
(1) crushing raw ore, primarily selecting by using a magnetic pulley, and removing first tailings to obtain first mineral;
(2) crushing the first mineral, then carrying out primary dry sorting, and removing second tailings to obtain a second mineral;
(3) screening the second minerals, and carrying out wind power sorting on the screened second minerals to divide the second minerals into coarse fraction minerals and fine fraction minerals;
(4) and carrying out secondary dry separation on the fine fraction minerals to obtain the required concentrate.
Preferably, in the step (1), the crushing of the raw ore includes primary crushing and intermediate crushing which are sequentially performed, and the primary crushing and the intermediate crushing are respectively performed by a primary crusher and an intermediate crusher.
Preferably, in step (2), the crushing of the first mineral is accomplished by a high pressure roller mill.
Preferably, in the step (2), the primary dry sorting is performed by a steel belt type multistage dry separator, which includes: the first box body, the first feed inlet arranged at the top of the first box body, the first conveying component, the second conveying component and the third conveying component which are arranged in the first box body from top to bottom in sequence are arranged at the first discharge port for outputting the second mineral, the second discharge port for outputting the second tailings and the third discharge port at the bottom of the first box body in sequence along the conveying direction of the first conveying component, the conveying directions of the first conveying component and the third conveying component are the same and are opposite to the conveying direction of the second conveying component, magnetic systems are arranged in the first conveying component and the third conveying component, the two ends of the first conveying component are respectively positioned above the first discharge port and the third discharge port, the two ends of the second conveying component are respectively positioned above the second discharge port and the third discharge port, and two ends of the third conveying assembly are respectively positioned above the first discharge hole and the second discharge hole.
Preferably, in the step (3), the screening of the second mineral is completed by a linear vibrating screen, and the screened second mineral is an undersize mineral of the linear vibrating screen.
Further preferably, in the step (3), the oversize minerals of the linear vibration sieve are crushed again, and the step (2) is repeated.
Further preferably, in the step (3), the undersize minerals of the linear vibrating screen are sent to a demagnetizer for demagnetizing, and then are subjected to air classification.
Preferably, in step (3), the coarse fraction ore obtained is crushed again and step (2) is repeated.
Preferably, in the step (4), the secondary dry separation is completed by a vibrating dry separator, the vibrating dry separator includes a second box, a second feeding hole formed in the top of the second box, a vibrating conveying assembly disposed in the second box, a material guide assembly disposed in the second box and located above the vibrating conveying assembly and used for adsorbing and conducting magnetic minerals, a fourth discharging hole for outputting non-magnetic minerals and a fifth discharging hole for outputting magnetic minerals, the fourth discharging hole and the fifth discharging hole are sequentially disposed at the bottom of the second box along a direction away from the vibrating conveying assembly, one end of the material guide assembly is located above the vibrating conveying assembly, and the other end of the material guide assembly is suspended above the fifth discharging hole.
Another object of the present invention is to provide a beneficiation system based on the beneficiation method described above.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a beneficiation system, beneficiation system is including the primary crusher, well rubbing crusher, magnetism pulley primary separator, high-pressure roller mill, the multistage dry separation machine of steel band formula, rectilinear vibrating screen, demagnetization machine, wind-force sorter, vibrating dry separation machine, dust remover that set gradually and be used for control the control system of beneficiation system operation.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the beneficiation method, the magnetic concentrate in the raw ore can be effectively and thoroughly separated through the matching of primary dry separation and secondary dry separation and the assistance of the primary separation by the magnetic pulley and the wind separation, and the grade of the separated magnetic concentrate is greatly improved to 55-65%; the beneficiation system based on the beneficiation method is simple in structure and convenient to operate.
Drawings
FIG. 1 is a schematic structural diagram of a steel belt type multistage dry separator in a specific embodiment of the invention;
fig. 2 is a schematic structural view of a vibratory dry separator in an embodiment of the invention.
Wherein: 1. a first case; 2. a first feed port; 3. a first conveying assembly; 31. a first transfer roller; 32. a first conveyor belt; 4. a second transport assembly; 41. a second transfer roller; 42. a second conveyor belt 5, a third conveyor assembly; 51. a third transfer roller; 6. a first discharge port; 7. a second discharge port; 8. a third discharge port; 9. a magnetic system; 10. a striker plate; 11. a second case; 12. a second feed port; 13. a vibratory conveying assembly; 14. a material guiding assembly; 141. a fourth transfer roller; 142. a third conveyor belt; 143. a magnetic module; 15. a fourth discharge port; 16. and a fifth discharge hole.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
The invention discloses a dry-type environment-friendly beneficiation system and a beneficiation method.
The beneficiation method comprises the following steps:
(1) crushing raw ore, primarily selecting by using a magnetic pulley, and removing first tailings to obtain first mineral. Here, the crushing of the raw ore includes primary crushing and intermediate crushing which are sequentially performed, the primary crushing and the intermediate crushing are performed by a primary crusher and an intermediate crusher, respectively, and the magnetic pulley primary sorting is performed by a magnetic pulley primary sorting machine. The primary crusher, the intermediate crusher and the magnetic pulley primary separator are all of the existing structures and are not described in detail. Part of tailings can be preliminarily removed by crushing raw ores and performing magnetic pulley primary separation.
(2) And crushing the first mineral, performing primary dry separation, and removing the second tailings to obtain a second mineral. Here, the comminution of the first mineral is accomplished by means of a high-pressure roller mill. The high-pressure roller mill is an existing mechanism and is not described in detail.
And the primary dry separation is completed by a steel belt type multistage dry separator as shown in figure 1, and an arrow shown in figure 1 is an ore conveying direction. The steel belt type multistage dry separation machine comprises: a first box body 1, a first feed inlet 2 arranged at the top of the first box body 1, a first conveying component 3, a second conveying component 4 and a third conveying component 5 which are arranged in the first box body 1 from top to bottom in sequence, a first discharge outlet 6 which is arranged at the bottom of the first box body 1 in sequence along the conveying direction of the first conveying component 3 and is used for outputting a second mineral, a second discharge gate 7 and a third discharge gate 8 for exporting the second tailing, the direction of delivery of first conveyor assembly 3 and third conveyor assembly 5 is the same and opposite with the direction of delivery of second conveyor assembly 4, all be equipped with magnetism system 9 in first conveyor assembly 3 and the third conveyor assembly 5, first conveyor assembly 3 both ends are located first discharge gate 6 and third discharge gate 8 top respectively, second conveyor assembly 4 both ends are located second discharge gate 7 and third discharge gate 8 top respectively, third conveyor assembly 5 both ends are located first discharge gate 6 and second discharge gate 7 top respectively.
In this embodiment, through the cooperation of first conveying assembly 3, second conveying assembly 4 and third conveying assembly 5, constituted multistage magnetic system frame, can carry out multistage thorough sorting to the ore deposit, select separately effectually, very big improvement resource utilization.
Specifically, the first feed opening 2 is located above the first conveying member 3. The first conveying assembly 3 comprises two first conveying rollers 31 which are rotatably arranged and a first conveying belt 32 which is in transmission connection with the two first conveying rollers 31, and the first conveying belt 32 is a non-magnetic steel belt. The rotation axis of the first conveying roller 31 extends in the horizontal direction and is perpendicular to the conveying direction of the first conveying assembly 3. The magnetic system 9 in the first conveying assembly 3 comprises permanent magnets respectively arranged in the first conveying roller 31 at the tail end of the first conveying assembly 3 in the conveying direction and at the top of the inner side of the first conveying belt 32, and an electric permanent magnet arranged at the bottom of the inner side of the first conveying belt 32.
Here, the permanent magnet blocks at the top of the inner side of the first conveyor belt 32 are arranged in a polar S pole and N pole manner, and play roles in magnetic overturning and magnetic stirring of magnetic minerals to form an upper plane magnetic system; the permanent magnet blocks in the first conveying roller 31 at the conveying end form a circumferential magnetic system for adsorbing magnetic minerals; the electric permanent magnet at the bottom of the inner side of the first conveyor belt 32 is composed of electric permanent magnets with adjustable magnetic field intensity, the polarities of the electric permanent magnets are formed by close arrangement of S poles and N poles at small pole distances alternately from front to back and from left to right, a lower plane magnetic system is formed, and the electric permanent magnets are matched with self-oscillation of a non-magnetic steel belt and used for scattering and destroying magnetic agglomeration and magnetic wrapping phenomena and adsorbing magnetic minerals, and the strong electric permanent magnets with adjustable fields can adapt to various ores.
During ore dressing, the ore is placed from the first feeding port 2, falls onto the first conveyor belt 32 on the upper portion and is conveyed forwards, rapid magnetic overturning and magnetic stirring are carried out under the action of the upper plane magnetic system, primary separation of magnetic minerals and non-magnetic minerals is achieved, then the ore reaches the circumference magnetic system, the non-magnetic minerals mixed among the magnetic minerals are not adsorbed by magnetic force or are small in magnetic force, under the combined action of centrifugal force, gravity, magnetic overturning and magnetic stirring of the magnetic minerals, the non-magnetic minerals can gradually move towards the outer layer and are thrown out to enter the third discharging port 8, the magnetic minerals are adsorbed onto the first conveyor belt 32 on the lower portion and are conveyed reversely, magnetic agglomeration and magnetic wrapping phenomena are further broken under self-excited oscillation of the lower plane magnetic system and the steel belt, and the grade of the ore is improved.
The second conveying assembly 4 includes two second conveying rollers 41 rotatably disposed, and a second conveying belt 42 in transmission connection with the two second conveying rollers 41. The second conveyance roller 41 rotates in the opposite direction to the first conveyance roller 31.
When the magnetic mineral oscillates in the lower plane magnetic system, a small amount of the entrained non-magnetic mineral falls onto the second conveyor belt 42 and is conveyed forward, and then reaches the second discharge port 7 and falls, and the magnetic mineral is conveyed to the first conveyor roller 31 at the head end along with the first conveyor belt 32 and falls downward into the first discharge port 6 under the action of gravity.
The third conveying assembly 5 is a rotatable third conveying roller 51, and the magnetic system 9 in the third conveying assembly 5 is a permanent magnet arranged in the third conveying roller 51. The third conveyance roller 51 rotates in the same direction as the first conveyance roller 31.
After the magnetic minerals on the second conveyor belt 42 fall, in order to prevent a small part of weakly magnetic minerals from being thrown out and wasted, a third conveyor roller 51 is provided, the minerals falling from the second conveyor belt 42 fall onto the third conveyor roller 51, the non-magnetic minerals are thrown out and fall into the second discharge port 7 under the action of centrifugal force and gravity, and the weakly magnetic minerals are adsorbed on the third conveyor roller 51 and are thrown out after rotating to the upper part of the first discharge port 6 along with the third conveyor roller 51.
The first conveying roller 31, the second conveying roller 41 and the third conveying roller 51 are all driven by a motor.
Foretell dry-type magnet separator still includes two striker plates 10 of locating in first box 1 and being located the one side that first discharge gate 6 and third discharge gate 8 kept away from each other respectively, and two striker plates 10 are along the setting of the orientation downward sloping that is close to each other. Through the setting of striker plate 10, can prevent that the ore of throwing from piling up at first box 1 dead angle.
Through mutually supporting of foretell first conveying subassembly 3, second conveying subassembly 4 and third conveying subassembly 5, can be effectively thorough select separately the ore, select separately very thoroughly, the grade of ore is selected separately in the improvement that can be very big. For ore with MFE below 20%, the grade is improved by 50% at the highest energy; for ore with MFE above 20%, the grade can be improved by 55% at most.
(3) And screening the second minerals, and performing wind power separation on the screened second minerals to divide the second minerals into coarse fraction minerals and fine fraction minerals. The second mineral is screened by the linear vibrating screen, the screened second mineral is an undersize mineral of the linear vibrating screen, and the wind power sorting is completed by the wind power sorting machine. The linear vibrating screen and the pneumatic separator are both of the existing structure and are not described in detail. The particle size ranges of the coarse fraction minerals and the fine fraction minerals to be sorted are different according to different minerals, and the particle size ranges are flexibly set according to the minerals to be sorted.
In this example, after the screening by the linear vibrating screen, the oversize mineral was again fed to the high pressure roller mill for pulverization, and step (2) was repeated. And (4) delivering the undersize minerals into a demagnetizer for demagnetizing, and then carrying out wind power separation. The demagnetizer is of the prior structure and is not described in detail. The demagnetizing machine can remove magnetism in minerals and improve the subsequent wind power separation effect.
The coarse fraction ore obtained in the above step is pulverized again by the high pressure roller mill, and step (2) is repeated.
(4) And carrying out secondary dry separation on the fine-fraction minerals to obtain the required concentrate.
The secondary dry separation is performed by a vibration dry separator, as shown in fig. 2, the vibration dry separator includes a second box 11, a second feeding hole 12 opened at the top of the second box 11, a vibration conveying assembly 13 disposed in the second box 11, a material guiding assembly 14 disposed in the second box 11 and above the vibration conveying assembly 13 for adsorbing and conducting magnetic minerals, a fourth discharging hole 15 disposed at the bottom of the second box 11 in sequence along a direction away from the vibration conveying assembly 13 for outputting non-magnetic minerals, and a fifth discharging hole 16 for outputting magnetic minerals, wherein one end of the material guiding assembly 14 is located above the vibration conveying assembly 13, and the other end is suspended above the fifth discharging hole 16. The vibration conveying assembly 4 is a vibration feeder in the prior art, and the specific structure is not described in detail.
Here, the second feed opening 12 is located above the head end in the conveying direction of the vibrating conveyor assembly 13. During ore dressing, send into second box 11 with the ore from second feed inlet 12, the ore drops to vibratory feed subassembly 13 and moves towards the discharge gate. In the moving process, the vibration conveying assembly 13 continuously vibrates to enable the ores to continuously jump in the moving process, so that the phenomena of magnetic agglomeration and magnetic wrapping between the magnetic minerals and the non-magnetic minerals are broken, and the magnetic minerals and the non-magnetic minerals are thoroughly separated. When the magnetic mineral reaches the lower part of the material guiding assembly 14, the magnetic mineral is adsorbed at the bottom of the material guiding assembly 14 and is continuously conveyed forwards to the fifth discharge hole 16 to fall off, and the non-magnetic mineral directly falls off at the fourth discharge hole 15 due to the fact that the non-magnetic mineral cannot be adsorbed, so that the separation of the ore is realized.
The material guiding assembly 14 includes two rotatable fourth conveying rollers 141, a third conveying belt 142 connected to the two fourth conveying rollers 141 in a transmission manner, and a magnetic module 143 disposed at the bottom of the inner side of the third conveying belt 142. Here, the rotation axis of the fourth conveyance roller 141 extends in the horizontal direction and is perpendicular to the conveyance direction of the vibratory conveyance assembly 13. The magnetic module 143 is a plurality of electromagnetic permanent magnets with adjustable field strength, and the plurality of magnetic modules 143 are sequentially arranged along the length direction of the third conveyor belt 142. The field-adjustable electric permanent magnet controls magnetic force through current, and can adapt to ores with different particle sizes. The fourth conveyance roller 141 here is driven by a motor.
The highest grade of the magnetic mineral sorted by the vibrating dry separator can reach 65%.
The beneficiation method is completed on a beneficiation system. The ore dressing system comprises a primary crusher, a middle crusher, a magnetic pulley primary separator, a high-pressure roller mill, a steel belt type multistage dry separator, a linear vibrating screen, a demagnetizing machine, a wind power separator, a vibrating dry separator, a dust remover and a control system for controlling the operation of the ore dressing system, wherein the primary crusher, the middle crusher, the magnetic pulley primary separator, the high-pressure roller mill, the steel belt type multistage dry separator, the linear vibrating screen, the demagnetizing machine, the wind power separator, the vibrating dry separator and the dust remover are sequentially arranged. The control system is a digital intelligent control system in the prior art, and the dry-type environment-friendly beneficiation system integrates safety, greenness, intelligence and high efficiency into a whole through the intelligent control system, and accords with the green intelligent direction of modern mine construction. All equipment of the mineral processing system is arranged in a fully closed mode, and dust is collected by a dust collector in a centralized dust removal mode, so that the environmental protection of the equipment and a factory building is guaranteed. The dust remover is the existing equipment, and the specific structure is not described in detail.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (8)
1. A beneficiation method is characterized in that: the beneficiation method comprises the following steps:
(1) crushing raw ore, primarily selecting by using a magnetic pulley, and removing first tailings to obtain first mineral;
(2) crushing the first mineral, then carrying out primary dry sorting, and removing second tailings to obtain a second mineral; the primary dry separation is completed through a steel belt type multistage dry separator, the steel belt type multistage dry separator comprises a first conveying assembly (3), a second conveying assembly (4) and a third conveying assembly (5), the conveying directions of the first conveying assembly (3) and the third conveying assembly (5) are the same and are opposite to the conveying direction of the second conveying assembly (4), and magnetic systems (9) are arranged in the first conveying assembly (3) and the third conveying assembly (5);
(3) screening the second minerals, and carrying out wind power sorting on the screened second minerals to divide the second minerals into coarse fraction minerals and fine fraction minerals;
the second mineral is screened by a linear vibrating screen, the screened second mineral is an undersize mineral of the linear vibrating screen, the undersize mineral of the linear vibrating screen is sent into a demagnetizer to be demagnetized, and then wind power separation is carried out;
(4) performing secondary dry separation on the fine fraction minerals to obtain required concentrate; the secondary dry separation is completed through a vibrating dry separator, and the vibrating dry separator comprises a vibrating conveying assembly (13) and a material guide assembly (14) with one end positioned above the vibrating conveying assembly (13) and used for adsorbing and conducting magnetic minerals.
2. A beneficiation process according to claim 1, characterized in that: in the step (1), the crushing of the raw ore comprises primary crushing and intermediate crushing which are sequentially carried out, wherein the primary crushing and the intermediate crushing are respectively completed through a primary crusher and an intermediate crusher.
3. A beneficiation process according to claim 1, characterized in that: in the step (2), the pulverization of the first mineral is performed by a high-pressure roller mill.
4. A beneficiation method according to claim 1, characterized in that: the multistage dry separation of steel band formula machine still include: the first box body (1), a first feeding hole (2) arranged at the top of the first box body (1), a first discharging hole (6) for outputting the second mineral, a second discharging hole (7) for outputting the second tailings and a third discharging hole (8), wherein the first conveying component (3), the second conveying component (4) and the third conveying component (5) are sequentially arranged in the first box body (1) from top to bottom, the first feeding hole (2), the second discharging hole (7) and the third discharging hole (8) are sequentially arranged at the bottom of the first box body (1) along the conveying direction of the first conveying component (3), two ends of the first conveying component (3) are respectively arranged above the first discharging hole (6) and the third discharging hole (8), two ends of the second conveying component (4) are respectively arranged above the second discharging hole (7) and the third discharging hole (8), and two ends of the third conveying assembly (5) are respectively positioned above the first discharge hole (6) and the second discharge hole (7).
5. A beneficiation process according to claim 1, characterized in that: in the step (3), the oversize minerals of the linear vibration sieve are crushed again, and the step (2) is repeated.
6. A beneficiation process according to claim 1, characterized in that: in the step (3), the obtained coarse fraction ore is pulverized again, and the step (2) is repeated.
7. A beneficiation method according to claim 1, characterized in that: the vibrating dry separator further comprises a second box body (11), a second feeding hole (12) formed in the top of the second box body (11), a fourth discharging hole (15) used for outputting nonmagnetic minerals and a fifth discharging hole (16) used for outputting magnetic minerals, wherein the bottom of the second box body (11) is provided with a guide component (14), the vibration conveying component (13) and the guide component (14) are arranged in the second box body (11), the fourth discharging hole (15) and the fifth discharging hole (16) are sequentially arranged along the direction away from the vibration conveying component (13), one end of the guide component (14) is located above the vibration conveying component (13), and the other end of the guide component (14) is suspended above the fifth discharging hole (16).
8. A beneficiation system based on the beneficiation method according to any one of claims 1 to 7, characterized in that: the ore dressing system comprises a primary crusher, a middle crusher, a magnetic pulley primary separator, a high-pressure roller mill, a steel belt type multi-stage dry separator, a linear vibrating screen, a demagnetizing machine, a wind power separator, a vibrating dry separator, a dust remover and a control system for controlling the operation of the ore dressing system, wherein the primary crusher, the middle crusher, the magnetic pulley primary separator, the high-pressure roller mill, the steel belt type multi-stage dry separator, the linear vibrating screen, the demagnetizing machine, the wind power separator, the vibrating dry separator and the dust remover are sequentially arranged.
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