Air separation-based purification apparatus and method

Abstract

An air separation-based purification apparatus and method. The air separation-based purification apparatus comprises a feeding system and an air separation system; the feeding system is used for conveying materials to the air separation system; the feeding system comprises a feeding device and a feeder; the air separation system comprises an air separation device (4); the air separation device (4) comprises an air separation chamber (4-1), a material system and an air guide system; the material system and an air guide system are both communicated with the air separation chamber (4-1); the material system comprises a feed port (4-2) and a plurality of discharge ports; the air guide system comprises an air inlet (4-6) and a plurality of air outlets; and the air outlets comprise a longitudinal air guide port (4-8). The material conveying speed is adjusted on the basis of different particle sizes of the materials, so that the materials are dispersed uniformly and the materials entering the air separation chamber have different transverse initial set speeds, thereby satisfying the air separation requirements for the materials; and the longitudinal air guide port is provided in the air separation chamber to overcome gravity and increase the transverse moving distance, thereby achieving separation from granular minerals.

Description

Air separation and purification equipment and method Technical Field

[0001] The present invention relates to the technical field of mineral purification, and in particular to an air separation and purification device and method. Background Art

[0002] Minerals in nature come in a variety of forms, including granular, flaky, and fibrous, often distributed in a mixed state and requiring separation during use. Existing air separation, because it requires no water and is suitable for dry separation processes where water resources are scarce, is widely adopted by mining companies. However, traditional air separators can only separate minerals into two in a single pass. To achieve multiple separations, the process must be repeated multiple times, resulting in relatively low efficiency. Furthermore, the separation effect on larger, flaky minerals is not ideal.

[0003] Utility model patent CN217856752U relates to a pneumatic separator for tailings, comprising a bottom-mounted hopper, an air duct, a cyclone separator, and a bracket. A blower is provided below the bottom hopper, and there are at least two cyclones. A ore collection port is provided between the cyclone separator and the air duct, and a sorting area adjustment plate is provided within the ore collection port. The cyclone separator includes a cyclone body, a cyclone inlet and a spiral guide device are provided at the top of the cyclone body, a cyclone outlet and a collector are provided below the cyclone body, and a cyclone outlet pipe is provided above the cyclone body. The pneumatic separator provided by this utility model can sort multiple types of minerals at once, achieve process purification of the sorting air, effectively improve production efficiency, and reduce production costs. However, during use, materials may agglomerate, resulting in separation failure. The larger the flake minerals, the greater the effect of gravity and the less effect of lateral wind, the shorter the lateral movement distance, the easier it is to enter the discharge port, and the less likely it is to be separated from the granular minerals, which affects the separation results.

[0004] Therefore, a wind separation and purification equipment and method are designed to make the material fully dispersed before entering the wind separation process, and obtain multi-grade products through one-time wind separation; at the same time, according to the particle size of the material, the effective separation of large-scale minerals can be achieved by adjusting the air inlet switch and the wind force, which has broad application prospects.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide an air separation and purification device and method.

[0007] To achieve the above object, the technical solution adopted by the present invention is: an air separation and purification device, comprising a feeding system and an air separation system, wherein the feeding system is used to transport materials to the air separation system, and the air separation system is used to separate and purify flaky minerals;

[0008] The feeding system includes a feeding device and a feeder, and the feeder is used to adjust the feeding speed;

[0009] The air separation system includes an air separation device, which includes an air separation chamber, a material system and an induced draft system. The material system and the induced draft system are both connected to the air separation chamber. The material system includes a feed port and several discharge ports. The induced draft system includes an air inlet and several air outlets. The air outlet includes a longitudinal induced draft port.

[0010] Preferably, the feeding device comprises a feeding hopper.

[0011] Preferably, the feeder includes a vibrating feeder and a feeding shaker, and the material forms a material layer with uniform distribution and appropriate thickness on the feeding shaker after passing through the vibrating feeder.

[0012] Preferably, a motor is provided on the feeding shaking table, which controls the feeding shaking table to move horizontally toward or away from the air separation system, and controls the feeding shaking table to vibrate in a horizontal direction perpendicular to its moving direction.

[0013] Preferably, the feeding shaker can adjust the material conveying speed according to the different particle sizes of the materials, so that the materials entering the air separation chamber have different lateral initial speeds.

[0014] Preferably, each air outlet is connected to an induced draft fan.

[0015] Preferably, the air outlet includes a transverse air outlet and a longitudinal air outlet; the wind flow trajectory between the transverse air outlet and the air inlet is parallel to the horizontal plane, and the wind flow trajectory at the longitudinal air outlet is perpendicular to the horizontal plane.

[0016] Preferably, the longitudinal air inlet is located above the transverse windward inlet and the air inlet.

[0017] Preferably, the wind force at the transverse air inlet can be adjusted, thereby adjusting the transverse wind force in the air selection chamber.

[0018] Preferably, the greater the initial lateral speed and the greater the lateral wind force, the more conducive it is to the air separation and purification of large particle materials.

[0019] Preferably, the longitudinal air inlet is used to form an upward longitudinal wind force in the air selection chamber, and the wind force can be adjusted at the longitudinal air inlet.

[0020] Preferably, the air separation chamber is used for air separation and purification of raw materials. The top of the air separation chamber is connected to the feed port and the longitudinal air duct, the left side of the air separation chamber is connected to the air inlet, the right side is connected to the transverse air duct, and the bottom is connected to the discharge port.

[0021] This application also claims protection for a wind separation and purification method, which uses the wind separation and purification equipment described above, including the following steps:

[0022] S1, feeding stage: add the material into the feeding device, adjust and control the feeding speed through the feeder to make the material fully dispersed, and then enter the air separation system;

[0023] S2, air separation and purification stage; open the induced draft system to generate negative pressure in the induced draft port, and pass the dispersed material into the air separation chamber through the feed port. Under the combined action of natural gravity and wind force, particles of different shapes form different movement trajectories in the air separation chamber; and are discharged from different discharge ports; after air separation, the separation and purification of flake minerals is achieved.

[0024] Preferably, the material comprises flake-shaped minerals and granular minerals.

[0025] Among them, granular heavy minerals are less affected by wind force, have a shorter lateral movement distance, and are discharged from the discharge port below the feed port; flake minerals are more affected by wind force in the air separation chamber, and have a relatively longer lateral movement distance; among them, fine flake minerals are most affected by wind force, have the longest lateral movement distance, and are discharged from the discharge port farthest from the feed port; and large flake minerals are affected by wind force between granular minerals and fine flake minerals, and are discharged from the discharge port in the middle.

[0026] Preferably, in step S1, the material is first added to the feeding hopper, and the feeding speed is adjusted and controlled. After passing through the vibrating feeder, a uniformly distributed material layer of appropriate thickness is formed on the feeding table, so that the material is as dispersed as possible on the feeding table. The feeding table can vibrate left and right while conveying the material forward, further dispersing the material on the table. After passing through the vibrating feeder and the feeding table, the material is fully dispersed and then enters the air separation system.

[0027] Preferably, in step S2, the induced draft fan is turned on to generate negative pressure in the transverse air inlet and the longitudinal air inlet, and air enters the air separation chamber from the air inlet and then exits from the transverse air inlet and the longitudinal air inlet respectively.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] 1. The present invention provides a feeding shaker with left and right vibration functions to make the material fully dispersed; at the same time, the feeding shaker can adjust the material conveying speed according to the different particle sizes of the materials, so that the materials entering the air separation chamber have different lateral initial speeds, which can meet the air separation requirements of the materials.

[0030] 2. The present invention incorporates longitudinal air vents within the air separation chamber, creating an upward wind force within the chamber. This provides an upward lift for large flake minerals, thereby overcoming the influence of gravity and increasing their lateral movement distance, thereby achieving separation from granular minerals. Therefore, the opening and closing of the longitudinal air vents and the wind force can be controlled according to the particle size of the material, effectively separating large flake minerals.

[0031] 3. The present invention has a simple structure and a simple method, can achieve effective separation of minerals, and has a good separation effect, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, some of the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] FIG1 is a schematic structural diagram of an embodiment of the present invention.

[0034] Among them, 1. Feeding hopper; 2. Vibrating feeder; 3. Feeding shaker; 4. Air separation device;

[0035] 4-1, air separation chamber; 4-2, feed port; 4-3, first discharge port; 4-4, second discharge port; 4-5, third discharge port; 4-6, air inlet; 4-7, horizontal air inlet; 4-8, vertical air inlet. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Example 1

[0038] As shown in FIG1 , this embodiment relates to an air separation and purification device, comprising a feeding system and an air separation system. The feeding system is used to transport materials to the air separation system, and the air separation system is used to separate and purify flaky minerals.

[0039] The feeding system includes a feeding device and a feeder, and the feeder is used to adjust the feeding speed;

[0040] The air separation system includes an air separation device 4, which includes an air separation chamber 4-1, a material system and an induced draft system. The material system and the induced draft system are both connected to the air separation chamber. The material system includes a feed port 4-2 and several discharge ports. The induced draft system includes an air inlet 4-6 and several air outlets. The air outlet includes a longitudinal induced draft port.

[0041] Preferably, the feeding device comprises a feeding hopper 1 .

[0042] Furthermore, the feeder includes a vibrating feeder 2 and a feeding shaker 3. After the material passes through the vibrating feeder, a material layer with uniform distribution and appropriate thickness is formed on the feeding shaker.

[0043] Furthermore, a motor is provided on the feeding shaking table, which controls the feeding shaking table to move horizontally toward or away from the air separation system, and controls the feeding shaking table to vibrate in a horizontal direction perpendicular to its moving direction.

[0044] Furthermore, the feeding shaker can adjust the material conveying speed according to the different particle sizes of the materials, so that the materials entering the air separation chamber have different horizontal initial speeds.

[0045] Furthermore, each air outlet is connected to an induced draft fan.

[0046] Furthermore, the air outlet includes a transverse air outlet 4-7 and a longitudinal air outlet 4-8; the wind flow trajectory between the transverse air outlet and the air inlet is parallel to the horizontal plane, and the wind flow trajectory at the longitudinal air outlet is perpendicular to the horizontal plane.

[0047] Furthermore, the longitudinal air inlet is located above the transverse windward inlet and the air inlet.

[0048] Furthermore, the wind force at the transverse air inlet can be adjusted, thereby adjusting the transverse wind force in the air selection chamber.

[0049] Furthermore, the greater the horizontal initial speed and the greater the horizontal wind force, the more conducive it is to the air separation and purification of large-particle materials.

[0050] Furthermore, the longitudinal air inlet is used to form an upward longitudinal wind force in the air selection chamber, and the wind force can be adjusted at the longitudinal air inlet.

[0051] In this embodiment, the discharge port includes a first discharge port 4-3, a second discharge port 4-4, and a third discharge port 4-5; the first discharge port is located below the feed port, the third discharge port is located away from the first discharge port and close to the horizontal air outlet, and the second discharge port is located between the first discharge port and the third discharge port.

[0052] In other preferred embodiments, the number of discharge ports can be set to at least 4 according to the number of mineral subcategories.

[0053] Furthermore, the air separation chamber is used for air separation and purification of raw materials. The top of the air separation chamber is connected to the feed port and the longitudinal air duct, the left side of the air separation chamber is connected to the air inlet, the right side is connected to the transverse air duct, and the bottom is connected to the discharge port.

[0054] Example 2

[0055] This embodiment is implemented on the basis of the above-mentioned embodiment 1, and the similarities with the above-mentioned embodiment 1 are not repeated here.

[0056] This embodiment relates to a wind separation and purification method, which uses the wind separation and purification equipment described above and includes the following steps:

[0057] S1, feeding stage: add the material into the feeding device, adjust and control the feeding speed through the feeder to make the material fully dispersed, and then enter the air separation system;

[0058] S2, air separation and purification stage; open the induced draft system to generate negative pressure in the induced draft port, and pass the dispersed material into the air separation chamber through the feed port. Under the combined action of natural gravity and wind force, particles of different shapes form different movement trajectories in the air separation chamber; and are discharged from different discharge ports; after air separation, the separation and purification of flake minerals is achieved.

[0059] Furthermore, the material includes flake minerals and granular minerals.

[0060] Among them, granular heavy minerals are less affected by wind force, have a shorter lateral movement distance, and are discharged from the discharge port below the feed port; flake minerals are more affected by wind force in the air separation chamber, and have a relatively longer lateral movement distance; among them, fine flake minerals are most affected by wind force, have the longest lateral movement distance, and are discharged from the discharge port farthest from the feed port; and large flake minerals are affected by wind force between granular minerals and fine flake minerals, and are discharged from the discharge port in the middle.

[0061] Furthermore, granular heavy minerals are discharged from the first discharge port, fine flake minerals are discharged from the third discharge port, and large flake minerals are discharged from the second discharge port.

[0062] Furthermore, in step S1, the material is first added to the feeding hopper, and the feeding speed is adjusted and controlled. After passing through the vibrating feeder, a uniformly distributed material layer of appropriate thickness is formed on the feeding table, so that the material is as dispersed as possible on the feeding table. The feeding table can vibrate left and right while conveying the material forward, further dispersing the material on the table. After passing through the vibrating feeder and feeding table, the material is fully dispersed and then enters the air separation system.

[0063] Furthermore, in step S2, the induced draft fan is turned on to generate negative pressure in the horizontal air inlet and the longitudinal air inlet, and air enters the air separation chamber from the air inlet and then comes out from the horizontal air inlet and the longitudinal air inlet respectively.

[0064] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wind selection and purification device, characterized in that: It includes a feeding system and an air separation system, wherein the feeding system is used to transport materials to the air separation system, and the air separation system is used to separate and purify flaky minerals; The feeding system comprises a feeding device and a feeder, wherein the feeder is used to adjust the feeding speed; The air selection system includes an air selection device, which includes an air selection chamber, a material system and an induced draft system. The material system and the induced draft system are both connected to the air selection chamber. The material system includes a feed port and a plurality of discharge ports. The induced draft system includes an air inlet and a plurality of outlets. The air outlet includes a longitudinal air inlet.

2. The wind separation and purification equipment according to claim 1, characterized in that: The feeder comprises a vibrating feeder and a feeding shaker. After the material passes through the vibrating feeder, a material layer with uniform distribution and suitable thickness is formed on the feeding shaker.

3. The wind selection and purification equipment according to claim 2, characterized in that: The feeding shaking table is provided with a motor, which controls the feeding shaking table to move in a horizontal direction toward or away from the air separation system, and controls the feeding shaking table to vibrate in a horizontal direction perpendicular to its moving direction.

4. The wind selection and purification equipment according to claim 2, characterized in that: The feeding shaker can adjust the material conveying speed according to the different particle sizes of the materials, so that the materials entering the air separation chamber have different lateral initial speeds.

5. The wind separation and purification equipment according to claim 1, characterized in that: Each air outlet is connected with an induced draft fan.

6. The wind selection and purification equipment according to claim 1, characterized in that: The air outlet includes a transverse air inlet and a longitudinal air inlet; the wind flow trajectory between the transverse air inlet and the air inlet is parallel to the horizontal plane, and the wind flow trajectory at the longitudinal air inlet is perpendicular to the horizontal plane.

7. The wind selection and purification equipment according to claim 6, characterized in that: The wind force can be adjusted at the transverse air inlet, thereby adjusting the transverse wind force in the air selection chamber.

8. The wind selection and purification equipment according to claim 6, characterized in that: The longitudinal air inlet is used to form an upward longitudinal wind force in the air selection chamber, and the wind force can be adjusted at the longitudinal air inlet.

9. The wind separation and purification equipment according to claim 6, characterized in that: The air separation chamber is used for air separation and purification of raw materials. The top of the air separation chamber is connected to the feed port and the longitudinal air duct, the left side of the air separation chamber is connected to the air inlet, the right side is connected to the transverse air duct, and the bottom is connected to the discharge port.

10. A wind selection and purification method, characterized in that: The wind separation and purification equipment according to any one of claims 1 to 9 comprises the following steps: S1, feeding stage: add the material into the feeding device, adjust and control the feeding speed through the feeder, so that the material forms a fully dispersed state, and then enters the air separation system; S2, wind separation and purification stage; open the induced draft system to generate negative pressure in the induced draft port, and pass the dispersed material into the wind separation chamber through the feed port. Under the combined action of natural gravity and wind force, particles of different shapes form different movement trajectories in the wind separation chamber; and are discharged from different discharge ports; after wind separation, the separation and purification of flaky minerals is achieved.

Images