CN115845965A

CN115845965A - Sorting device for optimizing sorting effect

Info

Publication number: CN115845965A
Application number: CN202211623085.XA
Authority: CN
Inventors: 郎庆威
Original assignee: Northern Engineering and Technology Corp MCC
Current assignee: Northern Engineering and Technology Corp MCC
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-03-28

Abstract

The invention provides a sorting device for optimizing sorting effect, belonging to the technical field of magnetic separation of a concentrating mill, and comprising a crushing part, a sorting part and a discharging part which are integrally installed on the same rack from top to bottom; the machine frame is provided with an upper platform and a lower platform, the crushing part is arranged on the upper platform, and the sorting part comprises a feeding trough communicated below the crushing part and sorting units arranged in four directions, namely front, back, left and right directions of the feeding trough; the feeding trough and the four sorting units are all arranged on the lower platform; the discharging part is communicated with the lower part of the feeding trough. The invention can realize the crushing and separation operation by using one device, has good separation effect, can reduce the investment and operation cost, and increases the benefit of a concentrating mill.

Description

Sorting device for optimizing sorting effect

Technical Field

The invention belongs to the technical field of magnetic separation in a concentrating mill, and particularly relates to a separation device for optimizing separation effect.

Background

At present, most of iron ore types have magnetism to a certain degree, so magnetic separation is the most main ore dressing method for iron ores, magnetite is the most extensive iron ore with large current reserve, and the magnetite is separated and recycled by a magnetic separator with small magnetic field intensity due to strong magnetism. Before magnetite enters grinding, three-section or four-section crushing operation is generally carried out, and each section of crushing operation is one-time dissociation of magnetite ore, and part of monomer gangue which does not contain magnetite is regenerated, and the gangue is selected and subjected to tail flicking, so that the ore amount fed into grinding and selecting operation is reduced, the energy consumption and equipment investment of grinding and selecting are reduced, and the economic benefit of a concentrating mill is improved.

The current crushing equipment can be divided into two types according to the ore discharge mode, one type is circular ring peripheral ore discharge, and the equipment mainly comprises a gyratory crushing machine and a cone crusher; the other type is a strip discharge crusher, such as a jaw crusher, a single-toothed roller crusher, a double-toothed roller crusher, a high-pressure roller crusher. The length and width directions of discharged materials of the strip type ore discharging crusher can reach 300-1000mm at most, the magnetic field gradient of general sorting equipment is large, the magnetic field intensity is lower as the distance from the surface of a magnetic system is farther, so that the sorting is carried out from a single direction by using a single magnetic system, the thickness of the material flow can exceed the effective sorting depth of the magnetic system, the loss of part of magnetic iron is caused, the recovery rate of the magnetic iron is reduced, and the sorting effect is deteriorated. In addition, the current crushing and sorting operation respectively adopts a crusher and a sorting belt conveyor, so that two sections of operation need to be set, a crushing workshop and a sorting workshop are respectively built, the equipment quantity is large, the equipment purchasing and capital construction investment is large, and the operation and maintenance cost is also high.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the sorting device for optimizing the sorting effect, which can realize crushing and sorting operation by using one device, has good sorting effect, can reduce the investment and operation cost and increase the benefit of a concentrating mill.

The technical scheme adopted by the invention for solving the technical problem is as follows: a sorting device for optimizing sorting effect comprises a crushing part, a sorting part and a discharging part which are integrally mounted on the same frame from top to bottom; the machine frame is provided with an upper platform and a lower platform, the crushing part is arranged on the upper platform, and the sorting part comprises a feeding trough communicated below the crushing part and sorting units arranged in four directions, namely front, back, left and right directions of the feeding trough; the feeding trough and the four sorting units are all arranged on the lower platform; the discharging part is communicated with the lower part of the feeding trough.

As a further embodiment of the invention, the four sorting units have the same structure, the left and right sorting units are symmetrically arranged by the mirror image of the left and right longitudinal central planes of the material flow, and the front and rear sorting units are symmetrically arranged by the mirror image of the front and rear longitudinal central planes of the material flow.

As a further embodiment of the invention, each sorting unit comprises a sorting plate, a bend roller a, a bend roller b, a transmission roller drum, a conveyor belt and a transmission motor; the sorting plate is welded with the inner side of the side plate of the feeding trough through lugs at two ends of the sorting plate, a direction changing roller a and a direction changing roller b are respectively arranged above and below the outer side of the sorting plate, and the direction changing roller a and the direction changing roller b are arranged on the side plate of the feeding trough; the transmission roller is arranged outside the feeding trough and is arranged on the lower platform through the base; the transmission motor is arranged in the transmission roller to drive the transmission roller to rotate; the conveyor belt is sequentially sleeved on the transmission roller, the bend roller b, the sorting plate and the bend roller a.

As a further embodiment of the invention, the side plate height of the feed trough is 1.2-1.4 times the height of the sorting plate, the sorting plates of the four sorting units are all located outside the stream, and the width of each sorting plate is 1.1-1.2 times the width of the stream it faces.

As a further embodiment of the invention, the sorting plate is composed of a vertical plate and a folded plate welded at the bottom of the vertical plate at an obtuse angle to the outer side, the redirection roller a is arranged above the outer side of the vertical plate, and the redirection roller b is arranged below the outer side of the folded plate.

As a further embodiment of the invention, the arc bending angle of the conveyor belt at the bend roller a and the bend roller b is an obtuse angle, the conveyor belt crosses the bend roller a or the bend roller b and then reaches the transmission roller drum to form a horizontal section, and the conveying direction of the conveyor belt at the separation plate is downward conveying consistent with the material flow; the surface of the conveyor belt is lined with wear-resistant rubber.

As a further embodiment of the invention, the sorting plate is a permanent magnetic system, and the surface magnetic field intensity is 400mT-600mT.

As a further embodiment of the invention, the discharge part comprises a box body communicated with the lower opening of the feeding trough, a longitudinal partition plate connected with the bottom in the box body is respectively arranged at the longitudinal position between each separation plate and the material flow, and the four longitudinal partition plates are mutually welded into a tetrahedron; the lower opening between the tetrahedron and the four side walls of the box body is provided with an ore discharge chute, and the lower opening on the inner side of the tetrahedron is provided with a waste rock discharge chute.

As a further embodiment of the invention, the transmission motor is a variable frequency motor and is connected with the control box.

As a further embodiment of the invention, the crushing part adopts a crusher structure and comprises a crushing main machine and a transmission part which are connected, the crushing main machine and the transmission part are arranged on the upper-layer platform through a foundation base, and a crusher discharge hopper at the bottom of the crushing main machine penetrates through the upper-layer platform and is communicated with an inlet at the top of the feeding trough downwards.

The beneficial effects of the invention include:

1) The sorting device for optimizing the sorting effect is characterized in that the crushing part, the sorting part and the discharging part are arranged on one device from top to bottom, the crushing and sorting operation is integrated into one device, and compared with the traditional crushing and sorting mode that two devices are independently arranged in different workshops, the device for optimizing the sorting effect is small in number, small in equipment purchasing and capital investment, low in operation and maintenance cost and capable of greatly increasing the economic benefit of a concentrating mill.

2) The crushing part, the sorting part and the discharging part share one rack, so that high integration of the equipment is formed, and the investment of the equipment is reduced compared with the independent racks.

3) All be equipped with the separation unit in the outside of four directions all around of breaker discharge hopper below feeding trough, this kind of mode of enclosing type separation, two separation units all undertake the separation of the material stream of half thickness of corresponding direction separately with controlling two separation units around being equivalent to, just so all reduced half material stream thickness from four directions, thereby great reduction the decay of selecting separately magnetic force, thereby the effect of selecting separately has been guaranteed, strong assurance magnetic iron's high recovery rate, the separation effect has been optimized.

Drawings

FIG. 1 is a schematic view of the overall structure in one aspect of the present invention;

FIG. 2 is a schematic view of the overall structure in another aspect of the present invention;

fig. 3 is an enlarged view of a portion of the structure of the present invention.

In the figure: 1. a frame; 2. crushing the main machine; 3. a transmission section; 4. a base seat; 5. an upper stage; 6. a feeding trough; 7. a crusher discharge hopper; 8. a sorting plate; 9. a bend roller a; 10. a bend roller b; 11. a transmission roller; 12. a conveyor belt; 13. a drive motor; 14. a base; 15. a lower stage; 16. a support; 17. longitudinally dividing the plate; 18. an ore discharge chute; 19. waste rock discharging chute.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "longitudinal", "upper, lower, front, rear, left, right", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or component being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, "a" and "b" are used merely to distinguish one element from another and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The utility model provides a sorting unit of optimizing separation effect, is applicable to the target and is the strip ore discharge breaker. Comprises a crushing part, a sorting part, a discharging part and a frame 1; the frame is divided into an upper stage 5 and a lower stage 15.

The crushing part adopts a crusher structure and consists of a crushing main machine 2 and a transmission part 3. Broken host computer 2 is connected with the transmission of transmission portion 3, and the two is installed on basic seat 4, and basic seat 4 passes through the bolt to be connected with the upper platform 5 of frame 1.

The sorting part is formed by a feeding trough 6 connected with a crusher discharge hopper 7 at the bottom of the crushing main machine 2 through flanges and four sorting units, namely a front sorting unit, a rear sorting unit, a left sorting unit, a right sorting unit, a front sorting unit, a rear sorting unit and a material flow, wherein the four sorting units are symmetrically arranged in a mirror symmetry mode through a left longitudinal central plane and a right longitudinal central plane of the material flow.

The four sorting units have the same structure and are respectively composed of a sorting plate 8, a redirection roller a9, a redirection roller b10, a transmission roller 11, a conveyor belt 12 and a transmission motor 13. The base 14 of the transmission roller 11 is connected with a lower platform 15 of the frame 1 through a bolt, and the feeding trough 6 is connected with the lower platform 15 of the frame 1 through a support 16 on the four sides. The transmission roller 11 is an electric roller, and the transmission motor 13 is arranged in the transmission roller 11. In one embodiment, the driving motors 13 of the four sorting units are variable frequency motors and are connected with the control box.

The four sorting units share one feeding trough 6, the height of four side plates of the feeding trough 6 is 1.2-1.4 times of the height of the sorting plates 8, the four sorting plates 8 are arranged in the feeding trough 6 at the front, the back, the left and the right, and are all positioned at the outer side of the material flow and are 100-200mm away from the material flow.

The sorting plates 8 of the four sorting units are welded with the inner sides of the side plates of the feeding trough 6 through lugs at the two ends of the sorting plates. Each sorting plate 8 has a width of 1.1-1.2 times the width of the flow it faces, the sorting plate 8 being formed by a vertical plate and a flap welded to it at 110-130 ° below the vertical plate, the vertical plate having a length of 500-800mm and the flap having a length of 200-400mm.

The upper part of the outer side of the vertical plate of the four sorting plates 8 is provided with a direction-changing roller a9, the lower part of the outer side of the folded plate is provided with a direction-changing roller b10, and the conveyor belt 12 is sequentially sleeved on the transmission roller 11, the direction-changing roller b10, the sorting plates 8 and the direction-changing roller a9.

The bending angle of the conveyor belt 12 at the bend rollers a9 and b10 is 110-130 degrees, the conveyor belt passes through the bend rollers and then reaches the transmission roller 11 to form a horizontal section, and the length of the horizontal section is 1-1.5m. The surface of the conveyor belt 12 is lined with 30mm-80mm wear-resistant rubber.

The sorting plate 8 is a permanent magnetic system, and the surface magnetic field intensity is 400mT-600mT. The direction of travel of the conveyor belt 12 at the sorting plate 8 is downward in line with the flow of material.

The discharging part is in flange connection with the feeding trough 6 and is of a box body structure. The upper opening of the box body of the discharging part is welded with four sides of the lower opening of the feeding trough 6, a longitudinal partition plate 17 is arranged at the longitudinal position between each sorting plate 8 and the material flow in the box body, and the four longitudinal partition plates 17 are mutually welded into a tetrahedron. The lower opening between the tetrahedron and the four side walls of the box body is provided with an outer ring ore discharging chute 18, and the lower opening on the inner side of the tetrahedron is provided with a waste rock discharging chute 19.

In the embodiment, the width of the separation plates 8 of the four separation units at the front, the back, the left and the right is 1.1-1.2 times of the width of the material flow facing the separation plates, so that full-size separation of the material flow in all directions is ensured, 100% separation coverage of the material is ensured, loss of magnetic bodies is avoided fundamentally, the recovery rate of magnetic iron is ensured, and the separation effect is optimized. The sorting part adopts the sorting plate 8 to sort, and compared with the traditional sorting roller sorting, the sorting part has the advantages of simple structure, light weight and less investment.

The magnetic field intensity of the sorting plate 8 is 400mT-600mT, and the full recovery of magnetic separation minerals is ensured by adopting stronger field intensity, so that the loss of magnetic iron during sorting is greatly reduced from the source.

The adsorption of magnetic ores is formed on the vertical plate section of the separation plate 8 in a mode that the conveyor belt 12 covers the separation plate 8, the magnetic ores are turned to the movement close to the horizontal direction from the vertical direction through the arc folding of 110-130 degrees and then are conveyed to the rear of the folding plate along with the conveyor belt 12 and fall to one side of the ore discharge chute 18 under the action of single inertia, and the adsorption, turning and falling of the ores are realized in the mode, so that the structure is simple and practical, and the manufacturing cost is low.

The turning of the conveyor belt 12 on the upper side and the lower side of the sorting plate 8 is realized through the direction-changing rollers a9 and the direction-changing rollers b10, and the roller turning mode is favorable for saving energy and reducing the abrasion of the conveyor belt 12. The conveyor belt 12 is short in length, so that an intermediate bracket and a carrier roller do not need to be arranged, and the manufacturing cost is reduced.

The transmission motor 13 of the separation part can be subjected to variable frequency speed regulation, so that the belt speed of the conveyor belt 12 can be regulated, the inertial kinetic energy of the adsorbed magnetic ore during unloading is further regulated, the unloading track of the magnetic ore is changed, the proportion of materials on two sides of the longitudinal partition plate 17 is regulated, the recovery rate of magnetic iron in the separated concentrate is guaranteed to the maximum extent, and the separation index is optimized.

Claims

1. A sorting device for optimizing sorting effect is characterized by comprising a crushing part, a sorting part and a discharging part which are integrally arranged on the same rack (1) from top to bottom; the machine frame (1) is provided with an upper layer platform (5) and a lower layer platform (15), the crushing part is arranged on the upper layer platform (5), and the sorting part comprises a feeding trough (6) communicated below the crushing part and sorting units arranged in the front, back, left and right directions of the feeding trough (6); the feeding trough (6) and the four sorting units are all arranged on the lower-layer platform (15); the discharge part is communicated below the feeding trough (6).

2. The sorting device for optimizing sorting effect according to claim 1, wherein the four sorting units are identical in structure, the left and right sorting units are symmetrically arranged in mirror images of the left and right longitudinal central planes of the material flow, and the front and rear sorting units are symmetrically arranged in mirror images of the front and rear longitudinal central planes of the material flow.

3. The sorting device for optimizing sorting effect according to claim 2, wherein each sorting unit comprises a sorting plate (8), a redirection roller a (9), a redirection roller b (10), a transmission roller drum (11), a conveyor belt (12) and a transmission motor (13); the sorting plate (8) is welded with the inner side of the side plate of the feeding trough (6) through lugs at two ends of the sorting plate, a direction changing roller a (9) and a direction changing roller b (10) are respectively arranged above and below the outer side of the sorting plate (8), and the direction changing roller a (9) and the direction changing roller b (10) are installed on the side plate of the feeding trough (6); the transmission roller (11) is arranged outside the feeding trough (6) and is arranged on the lower platform (15) through a base (14); the transmission motor (13) is arranged in the transmission roller (11) to drive the transmission roller (11) to rotate; the conveyor belt (12) is sequentially sleeved on the transmission roller (11), the redirection roller b (10), the sorting plate (8) and the redirection roller a (9).

4. A sorting device for optimizing sorting performance according to claim 3, characterised in that the height of the side plate of the feeding trough (6) is 1.2-1.4 times the height of the sorting plate (8), the sorting plates (8) of four sorting units are all located outside the material flow, and the width of each sorting plate (8) is 1.1-1.2 times the width of the material flow that it faces.

5. The sorting device for optimizing sorting effect according to claim 4, characterized in that the sorting plate (8) is composed of a vertical plate and a folded plate welded to the bottom of the vertical plate at an obtuse angle to the outside, the bend roller a (9) is arranged above the outside of the vertical plate, and the bend roller b (10) is arranged below the outside of the folded plate.

6. The sorting device for optimizing sorting effect according to claim 3, characterized in that the bending angle of the conveyor belt (12) at the bend rollers a (9) and b (10) is an obtuse angle, the conveyor belt (12) passes over the bend rollers a (9) or b (10) and then reaches the transmission roller drum (11) to be a horizontal section, and the conveying direction of the conveyor belt (12) at the sorting plate (8) is a downward conveying direction consistent with material flow; the surface of the conveyor belt (12) is lined with wear-resistant rubber.

7. A sorting device with optimized sorting effect according to any of claims 3-6, characterized in that the sorting plate (8) is of permanent magnetic system, and the surface magnetic field strength is 400mT-600mT.

8. The sorting device for optimizing sorting effect according to claim 3, wherein the discharging part comprises a box body communicated with the lower opening of the feeding trough (6), a longitudinal dividing plate (17) connected with the bottom in the box body is respectively arranged at the longitudinal position between each sorting plate (8) and the material flow, and the four longitudinal dividing plates (17) are mutually welded into a tetrahedron; the lower opening between the tetrahedron and the four side walls of the box body is provided with an ore discharging chute (18), and the lower opening at the inner side of the tetrahedron is provided with a waste rock discharging chute (19).

9. The sorting device for optimizing sorting effect according to claim 3, wherein the transmission motor (13) is a variable frequency motor and is connected with a control box.

10. The sorting device for optimizing sorting effect according to claim 1, wherein the crushing part adopts a crusher structure and comprises a crushing main machine (2) and a transmission part (3) which are connected, the crushing main machine (2) and the transmission part (3) are installed on the upper platform (5) through a base (4), and a crusher discharge hopper (7) at the bottom of the crushing main machine (2) penetrates through the upper platform (5) and is communicated with an inlet at the top of the feeding trough (6) downwards.