Middling dense medium beneficiation device for lepidolite

Abstract

The invention provides a middling dense medium mineral separation device for lepidolite. The middling dense medium mineral separation device comprises a classifying screen, a mixing barrel, a dense medium cyclone and a medium drainage device, wherein the classifying screen is used for receiving middlings obtained after lepidolite is crushed and screened, screening the middlings and screening out media with a first preset diameter; the mixing barrel is connected with the classifying screen and used for receiving the medium with the first preset diameter, receiving water and ferrosilicon powder and mixing the medium with the first preset diameter, the water and the ferrosilicon powder into heavy suspension liquid; the heavy medium cyclone is connected with the material mixing barrel and is used for sorting the heavy suspension liquid so as to sort out concentrate; and the medium drainage device is connected with the dense medium cyclone and is used for screening the concentrate and outputting the screened concentrate. According to the device, chemicals do not need to be added, the cost and energy consumption are greatly reduced, the environment can be protected, environmental pollution is avoided, and the separation grade of concentrate can be improved.

Description

Technical Field

[0001] The present invention relates to the field of separation technology, and more particularly, to a medium ore heavy medium beneficiation device for spodumene ore. Background Art

[0002] Flotation is a beneficiation process in which solid minerals are floated from a water suspension (pulp) according to the differences in the physical and chemical properties of the mineral surfaces. The widely used flotation in industry is foam flotation, which is characterized in that the useful minerals selectively adhere to the air bubbles in the pulp and float to the surface of the pulp, achieving the separation of the useful minerals from the gangue. Specifically, before flotation, the ore needs to be ground to a particle size that meets the requirements of flotation, so that the useful minerals are basically monomerically dissociated for separation. Then, flotation reagents are added. During flotation, air is introduced into the pulp to form a large number of bubbles. Thus, the particles of minerals that are not easily wetted by water, that is, the so-called hydrophobic minerals, adhere to the bubbles and float to the surface of the pulp to form a mineralized foam layer; while those particles of minerals that are easily wetted by water, that is, the so-called hydrophilic minerals, cannot adhere to the bubbles and remain in the pulp. The mineralized foam is discharged, thus achieving the purpose of separation. However, in the flotation method, flotation reagents are added, which increases the beneficiation cost and also causes environmental pollution. Summary of the Invention

[0003] In view of this, the present invention provides a medium ore heavy medium beneficiation device for spodumene ore, aiming to solve the problems in the prior art that the addition of flotation reagents in the flotation method increases the beneficiation cost and pollutes the environment.

[0004] The present invention provides a medium ore heavy medium beneficiation device for spodumene ore, which includes: a sizing screen, a mixing tank, a heavy medium cyclone, and a medium removal device; wherein, the sizing screen is used to receive the medium ore after the spodumene ore is crushed and screened, screen the medium ore, and screen out the medium with a first preset diameter; the mixing tank is connected to the sizing screen, and is used to receive the medium with the first preset diameter, and also receive water and ferrosilicon powder, and mix the medium with the first preset diameter, water, and ferrosilicon powder into a heavy suspension; the heavy medium cyclone is connected to the mixing tank, and is used to beneficiate the heavy suspension to separate concentrated ore; the medium removal device is connected to the heavy medium cyclone, and is used to screen the concentrated ore and output the screened concentrated ore.

[0005] Further, the above-mentioned medium ore heavy medium beneficiation device for spodumene ore further includes: a combined medium tank and a dilute medium tank; wherein, the first outlet of the medium removal device is used to output concentrated ore; the second outlet of the medium removal device is connected to the combined medium tank, and is used to transport the screened water and medium with a higher concentration to the combined medium tank; the third outlet of the medium removal device is connected to the dilute medium tank, and is used to transport the screened water and medium with a lower concentration to the dilute medium tank.

[0006] Furthermore, the medium ore heavy medium beneficiation device for spodumene ore further includes: a first treatment device; wherein, the first treatment device is connected to the dilute medium tank and is used for treating the screen water and medium with a relatively low concentration.

[0007] Furthermore, in the medium ore heavy medium beneficiation device for spodumene ore, the first treatment device includes: a thickening cyclone; wherein, the inlet of the thickening cyclone is connected to the dilute medium tank and is used for receiving and thickening the screen water and medium with a relatively low concentration to obtain a floating flow and an underflow pulp; the first outlet of the thickening cyclone is used for outputting the floating flow; the second outlet of the thickening cyclone is connected to the combined medium tank and is used for transporting the underflow pulp to the combined medium tank.

[0008] Furthermore, in the medium ore heavy medium beneficiation device for spodumene ore, the first treatment device further includes: a magnetic separator; wherein, the inlet of the magnetic separator is connected to the first outlet of the thickening cyclone and is used for separating the floating flow to obtain silicon iron powder water and magnetic tail water; the first outlet of the magnetic separator is connected to the combined medium tank and is used for transporting the silicon iron powder water to the combined medium tank; the second outlet of the magnetic separator is used for outputting the magnetic tail water.

[0009] Furthermore, in the medium ore heavy medium beneficiation device for spodumene ore, the combined medium tank is connected to the mixing tank and is used for mixing the screen water and medium with a relatively high concentration with the underflow pulp output from the thickening cyclone and the silicon iron powder water output from the magnetic separator into a mixed pulp and transporting the mixed pulp to the mixing tank.

[0010] Furthermore, the medium ore heavy medium beneficiation device for spodumene ore further includes: a second treatment device; wherein, the sizing screen is further used for screening out the medium with a second preset diameter; wherein, the second preset diameter is smaller than the first preset diameter; the second treatment device is connected to the sizing screen and is used for treating the medium with the second preset diameter.

[0011] Furthermore, in the medium ore heavy medium beneficiation device for spodumene ore, the second treatment device includes: a thickener and a ball mill; wherein, the thickener is connected to the sizing screen and is used for receiving and thickening the medium with the second preset diameter to obtain thickened pulp; the ball mill is connected to the thickener and is used for receiving and grinding the pulp and outputting the ground pulp.

[0012] Furthermore, in the medium ore heavy medium beneficiation device for spodumene ore, the second treatment device further includes: a pulp tank; wherein, the first inlet of the pulp tank is connected to the sizing screen, the second inlet of the pulp tank is connected to the second outlet of the magnetic separator, and the outlet of the pulp tank is connected to the thickener. The pulp tank is used for mixing the medium with the second preset diameter with the magnetic tail water.

[0013] Further, in the middlings dense medium separation device for spodumene ore, the first inlet of the sizing screen is used to receive the middlings; the second inlet of the sizing screen is opened at the top of the sizing screen and is used to receive make-up water and spray the middlings.

[0014] In the present invention, the sizing screen screens the middlings after the spodumene ore is crushed and screened to screen out the medium with the first preset diameter. The mixing tank mixes the medium with the first preset diameter, water and ferrosilicon powder into a heavy suspension. The heavy medium cyclone separates the heavy suspension to separate the concentrate. The desliming device screens the concentrate and then outputs it. This device does not require the addition of chemicals, greatly reducing costs and energy consumption, and can protect the environment, avoid environmental pollution, and can also improve the separation grade of the concentrate, solving the problem in the prior art that the addition of flotation agents in the flotation method increases the ore dressing cost and pollutes the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the middlings dense medium separation device for spodumene ore provided by the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Hereinafter, the exemplary embodiments of the present disclosure will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0018] See Figure 1 , Figure 1This is a schematic structural diagram of the medium ore dense medium separation device for spodumene ore provided by an embodiment of the present invention. As shown in the figure, the medium ore dense medium separation device for spodumene ore includes: a sizing screen 1, a mixing tank 2, a dense medium cyclone 3, and a medium removal device 4. Among them, the sizing screen 1 is used to receive the medium ore after the spodumene ore is crushed and screened, screen the medium ore, and screen out the medium with a first preset diameter. Specifically, the first inlet of the sizing screen 1 is used to receive the medium ore. The second inlet of the sizing screen 1 is opened at the top of the sizing screen 1, and this second inlet is used to receive makeup water and spray the medium ore. Inside the sizing screen 1, the medium ore is mixed with the makeup water, and the sizing screen 1 screens the mixed medium ore, so as to screen out the medium with a first preset diameter and the medium with a second preset diameter, and the second preset diameter is smaller than the first preset diameter. The first outlet of the sizing screen 1 is used to output the medium with a first preset diameter, and the second outlet of the sizing screen 1 is used to output the medium with a second preset diameter.

[0019] During specific implementation, both the first preset diameter and the second preset diameter can be determined according to the actual situation, and this embodiment does not impose any restrictions on this. Preferably, the first preset diameter is 0.5 - 6 mm, and the second preset diameter is 0.5 mm.

[0020] More specifically, the first inlet of the sizing screen 1 is connected to a belt conveyor 12, and the medium ore is transported to the sizing screen 1 through the belt conveyor 12. The second inlet of the sizing screen 1 is connected to a makeup water pipe 13.

[0021] The mixing tank 2 is connected to the sizing screen 1. The mixing tank 2 is used to receive the medium with a first preset diameter, and also receive water and ferrosilicon powder, and mix the medium with a first preset diameter, water, and ferrosilicon powder into a heavy suspension. Specifically, the first inlet of the mixing tank 2 is connected to the first outlet of the sizing screen 1 through a post-screen medium ore conveying pipeline 16 to receive the medium with a first preset diameter (i.e., the medium of 0.5 - 6 mm). The second inlet of the mixing tank 2 is connected to a ferrosilicon powder silo 14 through a ferrosilicon powder screw conveyor 15 to receive ferrosilicon powder. The third inlet of the mixing tank 2 is used to receive water, and the mixing tank 2 mixes the medium with a first preset diameter, water, and ferrosilicon powder to form a heavy suspension.

[0022] The dense medium cyclone 3 is connected to the mixing tank 2 and is used to separate the heavy suspension to separate out concentrate. Specifically, the inlet of the dense medium cyclone 3 is connected to the outlet of the mixing tank 2 through a mixing slurry pump conveying pipeline 18. The dense medium cyclone 3 separates the heavy suspension. The density of the heavy suspension is between that of the concentrate and the tailings, and the separation effect is achieved through density stratification, so as to separate spodumene concentrate and tailings. The first outlet of the dense medium cyclone 3 is used to output the concentrate, and the second outlet of the dense medium cyclone 3 is an overflow port, and this second outlet is used to output the tailings, and the tailings are transported to the tailings pond through an overflow medium conveyor 19.

[0023] The medium separation device 4 is connected to the heavy medium cyclone 3 and is used for screening the concentrate and outputting the screened concentrate. Specifically, the inlet of the medium separation device 4 is connected to the first outlet of the heavy medium cyclone 3 through the underflow medium conveying pipeline 20. The medium separation device 4 is used for screening the concentrate to obtain the concentrate, the screen water and the medium. The first outlet of the medium separation device 4 is conveyed to the concentrate tank 25 through the concentrate pipeline 23 and the concentrate conveyor 24. The second outlet of the medium separation device 4 is used for outputting the screen water and the medium.

[0024] Preferably, the medium separation device 4 is a fixed screen or a medium separation screen. The concentrate recovers the medium and moisture through the fixed screen or the medium separation screen. The minerals on the screen are spodumene concentrate, and the material under the screen is the screen water and the medium.

[0025] It can be seen that in this embodiment, the sizing screen 1 screens the middlings after the spodumene ore is crushed and screened to screen out the medium with the first preset diameter. The mixing barrel 2 mixes the medium with the first preset diameter, water and ferrosilicon powder into a heavy suspension. The heavy medium cyclone 3 separates the heavy suspension to separate the concentrate. The medium separation device 4 screens and outputs the concentrate. This device does not need to add chemicals, greatly reducing the cost and energy consumption, and can protect the environment, avoid environmental pollution, and improve the separation grade of the concentrate, solving the problems in the prior art that the flotation method adds flotation agents, resulting in an increase in the beneficiation cost and environmental pollution.

[0026] See Figure 1 In the above embodiment, the middlings heavy medium beneficiation device further includes: a combined medium barrel 5 and a dilute medium barrel 6. Among them, the first outlet of the medium separation device 4 is used for outputting the concentrate. The concentrate is conveyed to the inside of the concentrate tank 25 through the concentrate pipeline 23 and the concentrate conveyor 24.

[0027] The second outlet of the medium separation device 4 is connected to the combined medium barrel 5 and is used for conveying the screened screen water and medium with a higher concentration to the combined medium barrel 5. Specifically, the second outlet of the medium separation device 4 is connected to the inlet of the combined medium barrel 5 through the thick medium pipeline 21.

[0028] The third outlet of the medium separation device 4 is connected to the dilute medium barrel 6 and is used for conveying the screened screen water and medium with a lower concentration to the dilute medium barrel 6. Specifically, the third outlet of the medium separation device 4 is connected to the inlet of the dilute medium barrel 6 through the dilute medium pipeline 22.

[0029] See Figure 1 The middlings heavy medium beneficiation device further includes: a first treatment device. Among them, the first treatment device is connected to the dilute medium barrel 6 and is used for treating the screen water and medium with a lower concentration to obtain ferrosilicon powder water.

[0030] The first processing device includes: a thickening cyclone 7. The inlet of the thickening cyclone 7 is connected to the dilute medium tank 6, and is used to receive and thicken the screen underflow water and medium with a lower concentration to obtain floating flow and bottom flow pulp. Specifically, the inlet of the thickening cyclone 7 is connected to the outlet of the dilute medium tank 6 through the dilute medium slurry pump conveying pipeline 26. The thickening cyclone 7 thickens the screen underflow water and medium with a lower concentration to obtain floating flow and bottom flow pulp. The first outlet of the thickening cyclone 7 is an overflow port, and this first outlet is used to output the floating flow.

[0031] The second outlet of the thickening cyclone 7 is connected to the combined medium tank 5, and is used to convey the bottom flow pulp to the combined medium tank 5. Specifically, the second outlet of the thickening cyclone 7 is connected to the combined medium tank 5 through the ferrosilicon powder water recovery pipeline 28.

[0032] The first processing device further includes: a magnetic separator 8. The inlet of the magnetic separator 8 is connected to the first outlet of the thickening cyclone 7, and is used to separate the floating flow to obtain ferrosilicon powder water and magnetic tail water. Specifically, the first outlet of the thickening cyclone 7 is connected to the inlet of the magnetic separator 8 through the magnetic separator pipeline 27. The floating flow overflows from the thickening cyclone 7 into the magnetic separator pipeline 27, and then is conveyed to the magnetic separator 8. The magnetic separator 8 recovers ferrosilicon powder water through weak magnetic separation.

[0033] The first outlet of the magnetic separator 8 is connected to the combined medium tank 5, and is used to convey the ferrosilicon powder water to the combined medium tank 5. Specifically, the first outlet of the magnetic separator 8 is connected to the ferrosilicon powder water recovery pipeline 28 through a pipeline. The ferrosilicon powder water output from the first outlet of the magnetic separator 8 is conveyed into the ferrosilicon powder water recovery pipeline 28. The ferrosilicon powder water is mixed with the bottom flow pulp output from the thickening cyclone 7 and then conveyed into the combined medium tank 5 together for reuse.

[0034] The second outlet of the magnetic separator 8 is used to output the magnetic tail water.

[0035] The combined medium tank 5 is connected to the mixing tank 2. Specifically, the outlet of the combined medium tank 5 is connected to the fourth inlet of the mixing tank 2 through the combined medium slurry pump conveying pipeline 17. The combined medium tank 5 is used to mix the screen underflow water and medium with a higher concentration with the bottom flow pulp output from the thickening cyclone 7 and the ferrosilicon powder water output from the magnetic separator 8 into a mixed slurry, and convey the mixed slurry to the mixing tank 2.

[0036] During specific implementation, when the combined medium tank 5 conveys the mixed slurry into the mixing tank 2, the mixed slurry contains water. The mixed slurry is mixed with the medium and ferrosilicon powder with a first preset diameter to form a heavy suspension. At this time, no additional water needs to be added. The mixed slurry provides water, and then the third inlet of the mixing tank 2 no longer receives water.

[0037] See Figure 1, the medium ore beneficiation device of Zhongkuang also includes: a second treatment device. Among them, the second treatment device is connected to the second outlet of the sizing screen 1 and is used to treat the medium with a second preset diameter.

[0038] The second treatment device includes: a thickener 9 and a ball mill 10. Among them, the thickener 9 is connected to the sizing screen 1. Specifically, the inlet of the thickener 9 is connected to the second outlet of the sizing screen 1, and the thickener 9 is used to receive and concentrate the medium with a second preset diameter to obtain concentrated pulp.

[0039] The ball mill 10 is connected to the thickener 9. Specifically, the inlet of the ball mill 10 is connected to the outlet of the thickener 9 through a pump discharge pipeline 32, and the ball mill 10 is used to receive and grind the pulp and output the ground pulp.

[0040] The second treatment device also includes: a pulp tank 11. Among them, the first inlet of the pulp tank 11 is connected to the second outlet of the sizing screen 1 through a post-screen pulp pipeline 30, the second inlet of the pulp tank 11 is connected to the second outlet of the magnetic separator 8 through a magnetic tail water pipeline 29, and the outlet of the pulp tank 11 is connected to the inlet of the thickener 9 through a pump delivery pipeline 31. The pulp tank 11 is used to mix the medium with a second preset diameter with magnetic tail water and transport the mixed slurry into the thickener 9.

[0041] In summary, in this embodiment, the sizing screen 1 screens the medium ore after crushing and screening spodumene ore to screen out the medium with a first preset diameter. The mixing barrel 2 mixes the medium with a first preset diameter, water, and ferrosilicon powder into a heavy suspension. The heavy medium cyclone 3 separates the heavy suspension to separate out the concentrate. The medium removal device 4 screens and outputs the concentrate. This device does not require the addition of chemicals. Compared with the flotation method in the prior art, it greatly reduces costs and energy consumption, can protect the environment, avoid environmental pollution, can also improve the separation grade of the concentrate, improve the separation efficiency of the concentrate, and increase the safety of ore beneficiation.

[0042] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A medium ore heavy medium beneficiation device for spodumene ore, characterized in that, Comprising: A sizing screen (1), a mixing barrel (2), a heavy medium cyclone (3) and a medium removal device (4); wherein, The sizing screen (1) is used to receive the middlings after the spodumene ore is crushed and screened, screen the middlings, and screen out the medium with a first preset diameter; The mixing barrel (2) is connected to the sizing screen (1), used to receive the medium with the first preset diameter, also receive water and ferrosilicon powder, and mix the medium with the first preset diameter, water and ferrosilicon powder into a heavy suspension; The heavy medium cyclone (3) is connected to the mixing barrel (2), used to separate the heavy suspension to separate out concentrate; The medium removal device (4) is connected to the heavy medium cyclone (3), used to screen the concentrate and output the screened concentrate.

2. The medium ore heavy medium beneficiation device according to claim 1, characterized in that, Further comprising: A combined medium barrel (5) and a dilute medium barrel (6); wherein, The first outlet of the medium removal device (4) is used to output concentrate; The second outlet of the medium removal device (4) is connected to the combined medium barrel (5), used to convey the screened water and medium with a higher concentration to the combined medium barrel (5); The third outlet of the medium removal device (4) is connected to the dilute medium barrel (6), used to convey the screened water and medium with a lower concentration to the dilute medium barrel (6).

3. The medium ore heavy medium beneficiation device according to claim 2, characterized in that, Further comprising: A first treatment device; wherein, The first treatment device is connected to the dilute medium barrel (6), used to treat the water and medium with a lower concentration in the screened water.

4. The medium ore heavy medium beneficiation device according to claim 3, wherein, The first treatment device includes: a thickening cyclone (7); wherein, The inlet of the thickening cyclone (7) is connected to the dilute medium barrel (6), used to receive and thicken the water and medium with a lower concentration in the screened water to obtain floating flow and underflow pulp; The first outlet of the thickening cyclone (7) is used to output the floating flow; The second outlet of the thickening cyclone (7) is connected to the combined medium barrel (5), used to convey the underflow pulp to the combined medium barrel (5).

5. The medium ore heavy medium beneficiation device according to claim 4, wherein, The first treatment device further includes: a magnetic separator (8); wherein, The inlet of the magnetic separator (8) is connected to the first outlet of the thickening cyclone (7), used to separate the floating flow to obtain ferrosilicon powder water and magnetic tail water; The first outlet of the magnetic separator (8) is connected to the combined medium barrel (5), used to convey the ferrosilicon powder water to the combined medium barrel (5); The second outlet of the magnetic separator (8) is used to output the magnetic tail water.

6. The middlings heavy medium beneficiation device according to claim 5, characterized in that, The combined medium barrel (5) is connected to the mixing barrel (2), used to mix the water and medium with a higher concentration in the screened water with the underflow pulp output by the thickening cyclone (7) and the ferrosilicon powder water output by the magnetic separator (8) into a mixed pulp, and convey the mixed pulp to the mixing barrel (2).

7. The medium ore heavy medium beneficiation device according to claim 5, characterized in that Further comprising: A second treatment device; wherein, The sizing screen (1) is further used to screen out the medium with a second preset diameter; wherein, the second preset diameter is smaller than the first preset diameter; The second processing device is connected to the sizing screen (1) and is used for processing the medium having a second preset diameter.

8. The medium ore heavy medium beneficiation device according to claim 7, characterized in that, The second processing device includes: a thickener (9) and a ball mill (10); wherein, The thickener (9) is connected to the sizing screen (1) and is used for receiving and thickening the medium having a second preset diameter to obtain thickened pulp. The ball mill (10) is connected to the thickener (9) and is used for receiving and grinding the pulp and outputting the ground pulp.

9. The medium ore dense medium beneficiation device according to claim 7, wherein The second processing device further includes: a pulp tank (11); wherein, A first inlet of the pulp tank (11) is connected to the sizing screen (1), a second inlet of the pulp tank (11) is connected to a second outlet of the magnetic separator (8), an outlet of the pulp tank (11) is connected to the thickener (9), and the pulp tank (11) is used for mixing the medium having a second preset diameter with the magnetic tail water.

10. The middlings heavy medium beneficiation device according to claim 1, wherein A first inlet of the sizing screen (1) is used for receiving middlings. A second inlet of the sizing screen (1) is opened at the top of the sizing screen (1) and is used for receiving makeup water and spraying the middlings.

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