Water curtain ore unloading method and device for large efficient magnetic separator

Abstract

The invention discloses a water curtain ore unloading method and device for a large efficient magnetic separator, relates to the technical field of magnetic separators, and aims to solve the problem that the ore unloading mode of the magnetic separator needs to be improved. The method comprises the following steps of: pumping concentrated overflow circulating water of tailings of a dressing plant into a main power house and flowing through an ore unloading water pipe; a container with an overflow opening not smaller than the working face of the roller in length is arranged near the roller of the magnetic separator, and the overflow opening covers the working face of the roller; an adsorption layer is laid at the bottom in the water tank to adsorb impurities precipitated in the water tank; circulating water is fed into the water tank through the ore unloading water pipe, and after the water tank is full, overflow water flows downwards to wash the barrel, so that ore unloading is completed; the device is simple in structure, easy to transform existing equipment, low in cost and easy to implement; and the working efficiency is improved, meanwhile, ore unloading is clean and free of residues, and the effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic separators, in particular to a large-scale and efficient magnetic separator water curtain ore unloading method and a device thereof. Background Art

[0002] Magnetic separator is a separation equipment used to remove iron powder and other materials from recycled powder particles. After the slurry flows into the trough through the feed box, the ore particles enter the feeding area of ​​the trough in a loose state under the action of the water flow of the feed water pipe. Under the action of the magnetic field, the magnetic ore particles are magnetically gathered to form "magnetic clusters" or "magnetic chains". The "magnetic clusters" or "magnetic chains" are subjected to the magnetic force in the slurry and move toward the magnetic poles and are adsorbed on the cylinder. Since the polarity of the magnetic poles is arranged alternately along the rotation direction of the cylinder and is fixed during operation, the "magnetic clusters" or "magnetic chains" produce magnetic stirring due to the alternation of magnetic poles when the cylinder rotates. Non-magnetic minerals such as gangue mixed in the "magnetic clusters" or "magnetic chains" fall off during the turning and fall into the tailings trough; the "magnetic clusters" or "magnetic chains" finally absorbed on the surface of the cylinder are the concentrates, which are transferred to the weakest magnetic edge of the magnetic system with the cylinder and unloaded into the concentrate trough under the action of the unloading water curtain to complete the ore separation.

[0003] The traditional way of unloading magnetic separators is to use a rubber scraper to scrape the surface of the drum. When scraping off the magnetite powder, the scraper causes the magnetite powder to rub against the magnetic separator drum, which will cause deep or shallow grooves to be worn on the drum surface. When the grooves reach a certain depth, the wear-resistant leather on the surface of the magnetic separator drum needs to be replaced. Because the steps for replacing the wear-resistant leather are relatively cumbersome and the process is relatively difficult, it affects normal production and also costs a lot of money. In addition, some unloading water curtains will cause ore accumulation and malfunction due to unclean unloading. Therefore, a large-scale and efficient magnetic separator water curtain unloading method and device are urgently needed to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide a large-scale and efficient magnetic separator water curtain unloading method and device thereof, so as to solve the problem that the magnetic separator unloading method needs to be improved.

[0005] To achieve the above object, the present invention provides the following technical solution: a large-scale high-efficiency magnetic separator water curtain unloading method, including the following specific contents:

[0006] The overflow circulating water from the concentrated tailings of the dressing plant is pumped to the main powerhouse and flows through the unloading water pipe;

[0007] A container with an overflow opening length not less than the length of the working surface of the drum is arranged near the drum of the magnetic separator, so that the overflow opening covers the working surface of the drum;

[0008] An adsorption layer is laid at the bottom of the water tank to absorb impurities precipitated in the water tank;

[0009] The circulating water is fed into the water tank through the ore unloading water pipe. When the water tank is full, the overflow water flows down to flush the cylinder, completing the ore unloading.

[0010] Another technical solution provided by the present invention is: a large-scale high-efficiency magnetic separator water curtain unloading device, including an unloading water pipe connected to the water outlet end of the valve, and also including a water receiving trough, which is located above the plane where the center line of the magnetic separator drum is located, and the water receiving trough is fixedly connected or detachably fixedly connected to the magnetic separator body; a water outlet trough is opened on the upper part of one side of the water receiving trough close to the magnetic separator drum, the length of the water outlet trough is not less than the length of the working surface of the magnetic separator drum, and the vertical planes where the two ends of the working surface of the magnetic separator drum are located are located between the two ends of the water outlet trough, and the water outlet trough is parallel to the working surface of the magnetic separator drum; an adsorption layer is laid at the lower end of the water receiving trough for adsorbing some impurities in the unloading water; the water outlet of the unloading water pipe leads to the water receiving trough.

[0011] Preferably, a drainage plate is obliquely fixed at the water outlet of the water receiving trough, which gradually approaches the working surface of the magnetic separator drum from the upper end to the lower end. The length of the drainage plate is not less than the length of the working surface of the magnetic separator drum, and the vertical planes where the two ends of the working surface of the magnetic separator drum are located are both located between the two ends of the drainage plate.

[0012] Preferably, the angle between the guide plate and the vertical direction is 45°.

[0013] Preferably, a plurality of fixing plates are welded to the lower end of the ore unloading water pipe, and the fixing plates are fixedly connected to the magnetic separator body and / or the water receiving trough.

[0014] Preferably, the upper end surface of the adsorption layer is an uneven curved surface.

[0015] Preferably, the adsorption layer is made of sponge or activated carbon.

[0016] Preferably, the water receiving trough is detachably fixedly connected to the magnetic separator body, a mounting plate is welded and fixed on one side of the magnetic separator drum inside the magnetic separator body, a plurality of fixing plates are welded to the lower end of the ore unloading water pipe, the fixing plate is welded and fixed to the upper part of the mounting plate, a hanging groove is provided on the side of the lower part of the mounting plate close to the ore unloading water pipe, a hook matching the hanging groove is welded on the outer wall on the opposite side of the water outlet of the water receiving trough, and the water receiving trough is detachably hung on one side of the lower part of the mounting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The large-scale high-efficiency magnetic separator water curtain unloading method and device have a simple structure, are easy to modify on existing equipment, are low-cost and easy to implement; during use, circulating water can unload the concentrate covering the surface of the cylinder through the overflow water in the water receiving trough, and because the length of the water receiving trough is sufficient to cover the entire unloading area, it can ensure that the concentrate is completely unloaded, avoiding the situation of "running black belt", and at the same time is conducive to improving the concentrate recovery rate. The circulating water in the unloading process flows by gravity, does not require power, is conducive to energy saving and consumption reduction, and will not splash or clog, while improving work efficiency. At the same time, the unloading is clean and residue-free, the effect is good, and it is not easy to accumulate ore materials, which can indirectly reduce maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the internal structure of the ore unloading device of the present invention from a front view;

[0020] Figure 2 It is a schematic diagram of the positional relationship between the side view structure of the ore unloading device of the present invention and the magnetic separator;

[0021] Figure 3 It is a structural schematic diagram of another embodiment of the water receiving trough of the present invention.

[0022] In the figure: 1. valve; 2. magnetic separator body; 3. ore unloading water pipe; 4. fixed plate; 5. water receiving trough; 51. adsorption layer; 6. drainage plate; 7. magnetic separator drum. DETAILED DESCRIPTION

[0023] The water curtain ore unloading method provided by the present invention includes the following specific contents:

[0024] The overflow circulating water from the concentrated tailings of the dressing plant is pumped to the main powerhouse and flows through the unloading water pipe;

[0025] A container with an overflow opening length not less than the length of the working surface of the drum is arranged near the drum of the magnetic separator, so that the overflow opening covers the working surface of the drum;

[0026] An adsorption layer is laid at the bottom of the water tank to absorb impurities precipitated in the water tank;

[0027] The circulating water is fed into the water tank through the ore unloading water pipe. When the water tank is full, the overflow water flows down to flush the cylinder, completing the ore unloading.

[0028] In order to realize the above-mentioned water curtain unloading method, it is necessary to improve the existing equipment. The technical scheme in the embodiment of the present invention will be clearly and completely described below in combination with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1 and 2 A large-scale high-efficiency magnetic separator water curtain unloading device comprises an unloading water pipe 3 connected to the water outlet end of a valve 1, and also comprises a water receiving trough 5, which is located above the plane where the center line of a magnetic separator drum 7 is located, and the water receiving trough 5 is fixedly connected to a magnetic separator body 2; an outlet trough is provided on the upper part of the side of the water receiving trough 5 close to the magnetic separator drum 7, the length of the outlet trough is not less than the length of the working surface of the magnetic separator drum 7, and the vertical planes where the two ends of the working surface of the magnetic separator drum 7 are located are located between the two ends of the outlet trough, and the outlet trough is parallel to the working surface of the magnetic separator drum 7; an adsorption layer 51 is laid at the lower end of the water receiving trough 5 for adsorbing some impurities in the unloading water; the outlet of the unloading water pipe 3 is connected to the water receiving trough 5.

[0031] like Figure 2 As shown, in this embodiment, since the distance between the inner wall of the magnetic separator body 2 and the magnetic separator drum 7 is not suitable for direct water discharge from the water receiving trough 5, a drainage plate 6 is obliquely fixed at the water outlet of the water receiving trough 5. For reference, the angle between it and the vertical direction can be 45°, and it gradually approaches the working surface of the magnetic separator drum 7 from the upper end to the lower end. The length of the drainage plate 6 is not less than the length of the working surface of the magnetic separator drum 7, and the vertical planes where the two ends of the working surface of the magnetic separator drum 7 are located are both located between the two ends of the drainage plate 6.

[0032] In order to prevent the unloading water pipe 3 from rotating due to the impact of water flow when water flows through, a plurality of fixing plates 4 are welded to the lower end of the unloading water pipe 3, and the fixing plates 4 are fixedly connected to the magnetic separator body 2 and / or the water receiving trough 5. The specific form of the fixing plates 4 can be welded only to the lower end of the unloading water pipe 3 as shown in the figure, or can be welded and sleeved on the outer periphery of the unloading water pipe 3, etc., so as to achieve the effect of limiting the rotation of the unloading water pipe 3.

[0033] Embodiment 2:

[0034] On the basis of the above-mentioned embodiment 1, since the unloading water pipe 3 uses circulating water, which has undergone flocculation and other treatment processes, impurities occasionally remain in it. If a filter screen or other methods are used to intercept it, it may cause the water channel resistance to become larger. However, after adopting the above implementation method, the water receiving trough 5 can also play the role of settling impurities, so that the water for washing the concentrate can be cleaner. However, under the action of the water flow, impurities may still flow out from the water outlet. Therefore, in the above scheme, an adsorption layer 51 is laid at the lower end of the water receiving trough 5. In order to further increase the effect of the structure, in this embodiment, the upper end surface of the adsorption layer 51 is set to an uneven curved surface, which not only increases the adsorption area, but also makes it easier to retain impurities at the lower end of the water receiving trough 5, which can be cleaned and replaced during inspection and maintenance. The adsorption layer 51 is preferably made of sponge or activated carbon.

[0035] Embodiment 3:

[0036] like Figure 3 As shown, on the basis of the above-mentioned embodiment 2, in order to facilitate the cleaning and replacement of the adsorption layer 51, the water receiving trough 5 is detachably fixedly connected to the magnetic separator body 2 in this embodiment. Specifically, a mounting plate is welded and fixed at one side of the magnetic separator drum 7 inside the magnetic separator body 2, and a plurality of fixing plates 4 are welded to the lower end of the unloading water pipe 3. The fixing plate 4 is welded and fixed to the upper part of the mounting plate. A hanging groove is provided on one side of the lower part of the mounting plate close to the unloading water pipe 3, and a hook matching the hanging groove is welded on the outer wall on the opposite side of the water outlet of the water receiving trough 5. The water receiving trough 5 is detachably hung on one side of the lower part of the mounting plate.

[0037] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

[0038] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A large-scale high-efficiency magnetic separator water curtain unloading method, characterized in that: The specific contents include: The overflow circulating water from the concentrated tailings of the concentrator is pumped to the main powerhouse and flows through the unloading water pipe; A container with an overflow opening length not less than the length of the working surface of the drum is arranged near the drum of the magnetic separator, so that the overflow opening covers the working surface of the drum; An adsorption layer is laid at the bottom of the water tank to absorb impurities precipitated in the water tank; The circulating water is fed into the water tank through the ore unloading water pipe. When the water tank is full, the overflow water flows down to flush the cylinder, completing the ore unloading.

2. A large-scale high-efficiency magnetic separator water curtain unloading device for implementing the method described in claim 1, comprising an unloading water pipe (3) connected to the water outlet end of the valve (1), characterized in that: It also comprises a water receiving trough (5), which is located above the plane where the center line of the magnetic separator drum (7) is located, and the water receiving trough (5) is fixedly connected or detachably fixedly connected to the magnetic separator body (2); a water outlet trough is provided at the upper part of one side of the water receiving trough (5) close to the magnetic separator drum (7), the length of the water outlet trough is not less than the length of the working surface of the magnetic separator drum (7), and the vertical planes where the working surfaces of the magnetic separator drum (7) are located are located between the two ends of the water outlet trough, and the water outlet trough is parallel to the working surface of the magnetic separator drum (7); an adsorption layer (51) is laid at the lower end of the water receiving trough (5) for adsorbing some impurities in the unloading water; and the water outlet of the unloading water pipe (3) is connected to the water receiving trough (5).

3. The device according to claim 2, characterized in that: A drainage plate (6) is fixedly arranged at an angle at the outlet of the water receiving trough (5), and gradually approaches the working surface of the magnetic separator drum (7) from the upper end to the lower end. The length of the drainage plate (6) is not less than the length of the working surface of the magnetic separator drum (7), and the vertical planes where the two ends of the working surface of the magnetic separator drum (7) are located are both located between the two ends of the drainage plate (6).

4. The device according to claim 3, characterized in that: The included angle between the guide plate (6) and the vertical direction is 45°.

5. The device according to claim 2, characterized in that: A plurality of fixing plates (4) are welded to the lower end of the ore unloading water pipe (3), and the fixing plates (4) are fixedly connected to the magnetic separator body (2) and / or the water receiving trough (5).

6. The device according to claim 2, characterized in that: The upper end surface of the adsorption layer (51) is an uneven curved surface.

7. The device according to claim 2, characterized in that: The adsorption layer (51) is made of sponge or activated carbon.

8. The device according to any one of claims 2 to 7, characterized in that: The water receiving trough (5) is detachably fixedly connected to the magnetic separator body (2); a mounting plate is welded and fixedly arranged inside the magnetic separator body (2) at one side of the magnetic separator drum (7); a plurality of fixing plates (4) are welded to the lower end of the ore unloading water pipe (3); the fixing plates (4) are welded and fixedly arranged to the upper part of the mounting plate; a hanging groove is provided on the lower side of the mounting plate close to the ore unloading water pipe (3); a hook matching the hanging groove is welded to the outer wall on the opposite side of the water outlet of the water receiving trough (5); and the water receiving trough (5) is detachably hung on one side of the lower part of the mounting plate.

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