Iron tailing sand raw material screening device for concrete production

Abstract

The utility model relates to the technical field of iron tailing sand raw material screening, and discloses an iron tailing sand raw material screening device for concrete production, which comprises a screening groove body and a screening magnetic system, the screening tank body is used for mixing iron tailing sand and water and comprises a screening box, and a separation chamber and a tailing chamber are arranged in the screening box; the screening magnetic system comprises a transversely-arranged roller and a fixing rod, the fixing rod is fixed to the screening groove body, the roller is rotationally connected with the fixing rod, a magnet is fixedly arranged on the fixing rod, and the sector of the magnet points to the sector structure obliquely below. According to the device, iron tailing sand and water are mixed to form a liquid mixture, so that iron particles are fully dispersed in a liquid environment, and the contact area between the iron particles and a magnetic field is increased; the separation chamber is located in a high-intensity magnetic field area pointed by the center line of the magnet, the iron particles are adsorbed through the obliquely-downward magnetic field of the fan-shaped magnet, and compared with plane adsorption of a traditional fixed magnet, the adsorption rate and the separation effect of the iron particles are remarkably improved through combination of the liquid environment and the directional high-intensity magnetic field.

Description

Technical Field

[0001] This utility model relates to the field of iron tailings sand raw material screening technology, and in particular to an iron tailings sand raw material screening device for concrete production. Background Technology

[0002] Iron tailings are waste products from the mineral processing of ore. They are often used as a raw material in the preparation of concrete. After the mineral processing of various iron ores, the iron tailings obtained generally contain a small amount of iron powder that has not been recovered. Using this iron tailings directly as a raw material for concrete not only causes a serious waste of resources, but also has an adverse effect on the quality of concrete.

[0003] Chinese Utility Model Patent Publication No. CN218591055U discloses a screening device for iron tailings sand raw materials used in concrete production. The device includes: a hopper, vertically arranged; a conveyor belt, inclined, with its higher end located directly below the outlet of the hopper; two height-limiting mechanisms, spaced apart above the conveyor belt along its length; each height-limiting mechanism includes a portal frame and a baffle mounted above the portal frame, the bottom of which is placed on the ground and encloses the conveyor belt; and multiple magnets, spaced apart above the conveyor belt along its length. This invention utilizes the magnets above the conveyor belt to absorb iron particles from the raw material for recycling. The portal frame on the two height-limiting mechanisms limits the height of the raw material passing through the portal frame, ensuring the height is below the height within the frame and preventing excessive material thickness from affecting the efficiency of the magnets in absorbing the iron particles.

[0004] However, its efficiency in recovering iron particles from tailings is low. In order to improve the recovery rate of iron particles, a screening device for iron tailings sand raw materials for concrete production is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the low iron particle recovery efficiency in existing technologies, and to propose a screening device for iron tailings sand raw materials in concrete production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a screening device for iron tailings sand raw materials for concrete production, comprising: a screening tank, wherein the screening tank is used to mix iron tailings sand and water, and includes a screening box, wherein a separation chamber and a tailings chamber are provided inside the screening box;

[0007] The screening magnetic system includes a horizontally arranged roller and a fixed rod. The fixed rod is fixed to the screening trough. The roller is rotatably connected to the fixed rod. A magnet is fixedly installed on the fixed rod. The magnet has a fan-shaped structure with its fan surface pointing diagonally downward.

[0008] As a further description of the above technical solution:

[0009] The screening box is equipped with a mixing chamber, which is connected to the separation chamber.

[0010] As a further description of the above technical solution:

[0011] The separation chamber is connected to the tailings chamber, and the separation chamber is located at the position pointed to by the center line of the magnet.

[0012] As a further description of the above technical solution:

[0013] The screening box is equipped with a tailing pipe, which is connected to the tailing chamber.

[0014] As a further description of the above technical solution:

[0015] A magnetic frame is fixedly installed on the roller, and the magnet is fixed on the magnetic frame.

[0016] As a further description of the above technical solution:

[0017] A discharge pipe is fixedly installed on the screening box.

[0018] As a further description of the above technical solution:

[0019] The screening tank also includes a water spray pipe, which is fixedly installed in the mixing chamber.

[0020] As a further description of the above technical solution:

[0021] The drum is provided with a driven wheel, and the screening trough is provided with a rotary drive component, which is used to drive the driven wheel to rotate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by setting a water spray pipe in the mixing chamber of the screening tank, iron tailings sand and water are mixed to form a liquid mixture, so that the iron particles are fully dispersed in the liquid environment, increasing the contact area with the magnetic field; the separation chamber is located in the strong magnetic field area pointed to by the center line of the magnet, and the magnetic field of the fan-shaped magnet is used to adsorb the iron particles. Compared with the planar adsorption of the traditional fixed magnet, the combination of the liquid environment and the directional strong magnetic field significantly improves the adsorption rate and separation effect of the iron particles.

[0024] 2. In this utility model, the residual iron powder in the tailings is reduced, which not only realizes the recycling of waste resources, but also avoids the negative impact of iron powder on the performance of concrete, and ensures the purity and stability of concrete raw materials. Attached Figure Description

[0025] Figure 1 The three-dimensional iron tailings sand raw material screening device for concrete production proposed in this utility model Figure 1 ;

[0026] Figure 2 The three-dimensional iron tailings sand raw material screening device for concrete production proposed in this utility model Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the internal structure of the iron tailings sand raw material screening device for concrete production proposed in this utility model.

[0028] Figure 4 A schematic diagram illustrating the working principle of a screening device for iron tailings sand raw materials used in concrete production.

[0029] Legend:

[0030] 1. Screening tank; 11. Screening box; 12. Mixing chamber; 13. Water spray pipe; 14. Separation chamber; 15. Tail chamber; 16. Tail pipe; 2. Screening magnetic system; 21. Drum; 22. Fixed rod; 23. Magnetic frame; 24. Magnet; 25. Discharge pipe; 26. Guide chute; 27. Driven wheel; 28. Rotary drive component. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] As mentioned in the background section, in order to overcome the problem that iron tailings sand generally contains a small amount of unrecovered iron powder, which leads to resource waste, the relevant technology adopts a magnetic recycling method.

[0033] Specifically, multiple magnets are arranged on the conveyor belt to recover iron particles from the tailings.

[0034] However, when iron particles are mixed with tailings, the adsorption rate is low when using magnets directly.

[0035] To address the issue of low iron particle recovery efficiency in tailings, this application embodiment designs a screening device for iron tailings sand raw materials used in concrete production, comprising a screening trough 1 and a screening magnetic system 2; the screening trough 1 is used to mix iron tailings sand and water, and includes a screening box 11, which contains a separation chamber 14 and a tailings chamber 15; the screening magnetic system 2 includes a horizontally arranged roller 21 and a fixed rod 22, the fixed rod 22 is fixed on the screening trough 1, the roller 21 is rotatably connected to the fixed rod 22, and a magnet 24 is fixedly installed on the fixed rod 22, the magnet 24 having a fan-shaped structure with its fan surface pointing diagonally downward.

[0036] In this way, when separating iron particles, the mixed iron tailings sand and water can be combined, and then a magnetic structure can be used to separate and recover the iron particles, which can effectively improve the iron particle recovery rate.

[0037] See Figures 1-4 The screening box 11 is equipped with a mixing chamber 12, which is connected to the separation chamber 14. The separation chamber 14 is connected to the tail material chamber 15, and the separation chamber 14 is located at the position pointed to by the center line of the magnet 24. The screening box 11 is equipped with a tail material pipe 16, which is connected to the tail material chamber 15. A magnetic frame 23 is fixedly installed on the drum 21, and the magnet 24 is fixed on the magnetic frame 23. A discharge pipe 25 is fixedly installed on the screening box 11. The screening tank 1 also includes a water spray pipe 13, which is fixedly installed at the mixing chamber 12. A driven wheel 27 is provided on the drum 21, and a rotary drive component 28 is provided on the screening tank 1. The rotary drive component 28 is used to drive the driven wheel 27 to rotate.

[0038] The screening box 11 is also fixedly equipped with a guide chute 26, which is used to guide the discharged iron ore.

[0039] To better understand the working process of the iron tailings sand raw material screening device for concrete production according to the embodiments of this application, please refer to... Figures 1-4 The following is a specific embodiment:

[0040] First, the iron tailings sand raw material is fed into the screening box 11 from the mixing chamber 12. At the same time, water is sprayed from the water spray pipe 13 to mix with the iron tailings sand raw material to form a solution. Then, the mixture moves along the direction of mixing chamber 12-separation chamber 14-tailing chamber 15. At the junction of separation chamber 14 and tailing chamber 15, the iron particles are separated from the iron tailings sand tailings. The tailings enter the tailing pipe 16 along the tailing chamber 15 and are discharged. The iron particles move towards the discharge pipe 25 under the rotation of the drum 21. The water flow sprayed from the discharge pipe 25 washes the iron particles onto the guide trough 26 for collection.

[0041] During operation, the output end of the rotary drive 28 drives the driven wheel 27 to rotate, which in turn drives the drum 21 to rotate. Since the center line of the sector of the magnet 24 points to the junction of the separation chamber 14 and the tailing chamber 15, the magnetic field is strongest at the junction of the separation chamber 14 and the tailing chamber 15, and gradually weakens towards both sides. At the junction of the separation chamber 14 and the tailing chamber 15, the iron particles are adsorbed on the outer surface of the drum 21. When the drum 21 rotates, it carries the iron particles to the vicinity of the discharge pipe 25. At this time, the magnetic field gradually weakens, and the iron particles are easily detached under the impact of the water flow in the discharge pipe 25. At the same time, the tailings flow into the tailing pipe 16 along the tailing chamber 15, realizing the separation and screening of iron particles and tailings.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A raw material screening device for iron tailings sand used in concrete production, characterized in that, include: Screening tank (1), the screening tank (1) is used to mix iron tailings sand and water, and includes a screening box (11), which is provided with a separation chamber (14) and a tailings chamber (15). The screening magnetic system (2) includes a horizontally arranged roller (21) and a fixed rod (22). The fixed rod (22) is fixed on the screening tank (1). The roller (21) and the fixed rod (22) are rotatably connected. A magnet (24) is fixedly installed on the fixed rod (22). The magnet (24) has a fan-shaped structure with its fan surface pointing diagonally downward.

2. The iron tailings sand raw material screening device for concrete production according to claim 1, characterized in that, The screening box (11) is equipped with a mixing chamber (12), which is connected to the separation chamber (14).

3. The iron tailings sand raw material screening device for concrete production according to claim 2, characterized in that, The separation chamber (14) is connected to the tailings chamber (15), and the separation chamber (14) is located at the position pointed to by the center line of the magnet (24).

4. The iron tailings sand raw material screening device for concrete production according to claim 3, characterized in that, The screening box (11) is equipped with a tailing pipe (16), which is connected to the tailing chamber (15).

5. The iron tailings sand raw material screening device for concrete production according to claim 4, characterized in that, A magnetic frame (23) is fixedly installed on the roller (21), and the magnet (24) is fixed on the magnetic frame (23).

6. The iron tailings sand raw material screening device for concrete production according to claim 5, characterized in that, The screening box (11) is fixedly installed with a discharge pipe (25).

7. The iron tailings sand raw material screening device for concrete production according to claim 6, characterized in that, The screening tank (1) also includes a water spray pipe (13), which is fixedly installed in the mixing chamber (12).

8. The iron tailings sand raw material screening device for concrete production according to claim 7, characterized in that, The drum (21) is provided with a driven wheel (27), and the screening tank (1) is provided with a rotary drive (28), which is used to drive the driven wheel (27) to rotate.

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