Rotational flow magnetic dewatering tank for mineral separation

Abstract

The utility model discloses a rotational flow magnetic dewatering tank for mineral separation, which comprises a tank body, an ore feeding barrel is arranged in the tank body, a water feeding pipe is arranged at the bottom of the tank body from bottom to top, the top of the water feeding pipe is connected with a water diversion cap, and the water diversion cap is positioned right below the ore feeding barrel. The water distribution cap comprises a cap groove, a cap cover and a water outlet pipe. According to the design of the water distribution cap, water flow from bottom to top is converted into water flow sprayed out at a high speed at multiple points in the circumferential direction, and the water flow sprayed out at the high speed in the circumferential direction carries mineral aggregate to spirally rotate on the inner wall of the groove body; the rotary motion is beneficial for the mineral aggregate to stay in the tank body for a longer time, and generation of vortexes is remarkably reduced. Through the shunting effect of the cap, mineral aggregates can be uniformly distributed on the material mixing disc at the liquid outlet end of the water outlet pipe, the uniform distribution is beneficial to better flocculation of magnetic mineral particles in a magnetic field, and the mineral separation efficiency of the magnetic dehydration tank is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mineral processing equipment for mining, specifically a vortex magnetic dewatering tank for mineral processing. Background Technology

[0002] Magnetic dewatering tanks are key equipment in iron ore beneficiation plants used for magnetite separation. Their main function is to effectively separate magnetic minerals from the ore slurry through magnetic force. In traditional magnetic dewatering tanks, the ore slurry is fed in through a feed cylinder, passes through the magnetic system, and then merges with clean water to form a countercurrent, promoting the flocculation and sedimentation of magnetic minerals in the slurry. There are typically two methods for feeding clean water: one is from bottom to top through a multi-pipe feed cap, and the other is from top center feed through a backflow plate. However, existing feed cap or backflow plate designs have certain limitations.

[0003] Specifically, current designs of water-receiving caps or backflow trays cannot effectively ensure that the slurry rises in a laminar flow state uniformly. This is because the design of water-receiving caps often causes eddies to form during the upward flow of water. These eddies not only disrupt the laminar flow of the slurry but also lead to uneven distribution of mineral particles, thus affecting the beneficiation efficiency of the magnetic dewatering tank. Furthermore, due to the uneven distribution of water flow, the slurry velocity within the tank is also uneven, which further intensifies particle mixing and reduces the recovery rate of magnetic minerals.

[0004] While the design of the backflow tray can improve water flow distribution to some extent, its central water supply method still cannot avoid the formation of eddies and uneven flow velocity during the slurry's ascent. These problems limit the performance of the magnetic dewatering tank in practical applications, especially when processing fine-grained magnetic minerals, where its negative impact on beneficiation efficiency is more significant. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vortex magnetic dewatering tank for mineral processing, which solves the problems existing in the magnetic dewatering tanks in the background technology.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a vortex magnetic dewatering tank for mineral processing, comprising a tank body, a feed cylinder disposed in the tank body, a water supply pipe disposed from bottom to top at the bottom of the tank body, a water distribution cap connected to the top of the water supply pipe, and the water distribution cap being located directly below the feed cylinder;

[0007] The water-dividing cap includes:

[0008] Hat groove;

[0009] The cap is fastened to the cap groove, and the cap and the cap groove form a receiving space; the water supply pipe is connected to the cap groove and communicates with the receiving space;

[0010] The water outlet pipe is located circumferentially in the cap groove.

[0011] Preferably, the outlet of the water pipe is tangent to the circumferential direction of the cap groove.

[0012] Preferably, the cap groove is tapered when projected in the front view.

[0013] Preferably, a mixing disc is provided circumferentially around the cap groove and at the outlet of the water outlet pipe. The mixing disc is an arc-shaped disc body, including a first opening end for water inlet and a second opening end for water outlet. The first opening end is connected to the water outlet pipe.

[0014] Preferably, the opening width of the first opening end is smaller than the opening width of the second opening end.

[0015] Preferably, a plurality of baffles are equidistantly distributed at the top edge of the cap groove, and a flow trough is formed between two adjacent baffles, the flow trough being correspondingly arranged with the mixing disc.

[0016] The beneficial effects of this invention are as follows: By using the vortex magnetic dewatering tank for mineral processing provided by this invention, compared with the prior art, the design of the water-distributing cap transforms the upward water flow into a circumferentially multi-point high-speed water jet. The circumferentially high-speed water jet carries the ore material and rotates it in a spiral motion on the inner wall of the tank. This rotational motion helps the ore material stay in the tank for a longer time, significantly reduces the generation of eddies, ensures that the slurry remains in a laminar flow state when rising in the tank, improves the uniform distribution of the slurry, and thus enhances the dewatering effect. Through the diversion effect of the cap, the ore material can be evenly distributed onto the mixing plate at the liquid outlet end of the water pipe. This uniform distribution helps the magnetic mineral particles to flocculate better in the magnetic field, improving the mineral processing efficiency of the magnetic dewatering tank. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the tank structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the water-dividing cap structure of this utility model.

[0019] Explanation of reference numerals in the figure

[0020] 1. Tank body, 2. Feed cylinder, 3. Water supply pipe, 4. Water distribution cap, 41. Cap trough, 42. Cap cover, 43. Water outlet pipe, 5. Mixing plate, 6. Material retainer, 7. Flow trough. Detailed Implementation

[0021] The technical solutions of the present invention 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 invention, and not all embodiments. Various changes can be made to the implementation scheme as long as the effects of the present invention can be achieved.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Reference Figure 1-2 This embodiment describes a vortex magnetic dewatering tank for mineral processing. The dewatering tank includes a tank body 1, a feed cylinder 2 inside the tank body 1, and a water supply pipe 3 installed from bottom to top at the bottom of the tank body 1. A water distribution cap 4 is connected to the top of the water supply pipe 3. The water flowing out of the water supply pipe 3 enters the water distribution cap 4 and is then sprayed out circumferentially, forming a vortex on the inner wall of the tank body 1. The water distribution cap 4 is located directly below the feed cylinder 2. After the ore falls down along the feed cylinder 2, it falls onto the water distribution cap 4, and then the water sprayed out from the water distribution cap 4 mixes with the ore, flowing evenly in a rotating state on the inner wall of the tank body 1, which does not easily generate eddies. This ensures that the flow rate of the water and ore is uniform, ensuring that the high-density ore descends at a uniform speed and impurities rise at a uniform speed before being discharged.

[0024] In this embodiment, the water-dividing cap 4 is as follows Figure 2 The diagram shows a cap groove 41, a cap 42, and a water outlet pipe 43. The cap 42 is fastened to the cap groove 41, forming a receiving space. The water supply pipe 3 is connected to the cap groove 41 and communicates with the receiving space, allowing water supplied by the water supply pipe 3 to collect within the receiving space before being sprayed out through the water outlet pipe 43. The connection between the water supply pipe 3 and the cap groove 41 can be vertical or inclined. For example, when the water supply pipe 3 is vertically connected to the cap groove 41, the water naturally fills the receiving space. When it is inclined, the inclination direction must be consistent with the water outlet direction of the water outlet pipe 3 to ensure that the water enters the cap groove 41 in a swirling flow, flowing out through the water outlet pipe 43 during the swirling process, thus ensuring the maximum flow rate when water exits the water outlet pipe 43.

[0025] Furthermore, the aforementioned water outlet pipe 43, as... Figure 2 The water outlet pipe 43 is positioned circumferentially in the cap groove 41, and its outlet direction is tangential to the circumferential direction of the cap groove 41. This design allows the water to swirl after being sprayed out.

[0026] In this embodiment, the cap groove 41 is conical in the front view projection. A mixing plate 5 is provided circumferentially around the cap groove 41 and at the outlet of the water outlet pipe 3. After falling, the mineral material falls onto the conical cap groove 41, falls evenly along the conical outer wall of the cap groove 41, and finally falls onto the mixing plate 5. In one embodiment, the water flowing out of the water outlet pipe 43 and the mineral material flowing down from the cap groove 41 converge on the mixing plate 5, and the high-speed flowing water carries the mineral material on the mixing plate 5 to impact the inner wall of the tank 1.

[0027] Specifically, the aforementioned mixing pan 5 is an arc-shaped pan, comprising a first opening end for water inlet and a second opening end for water outlet. The first opening end is connected to the water outlet pipe 43, allowing the water flowing from the water outlet pipe 43 to smoothly impact the upper surface of the mixing pan 5. In a preferred embodiment, the opening width of the first opening end is smaller than the opening width of the second opening end, which facilitates the rapid outflow of the mixed liquid after the water from the water outlet pipe 43 and the mineral material are mixed.

[0028] In a preferred embodiment, a plurality of baffles 6 are evenly distributed at the top edge of the cap groove 41, and a flow channel 7 is formed between two adjacent baffles 6. The number of flow channels 7 and the number of mixing pans 5 are equal and they are arranged in a one-to-one correspondence. As the ore falls along the cap groove 41, it is blocked by the baffles 6 and gathers at the flow channel 7, and finally falls onto the mixing pan 5, preventing the ore from overflowing on the cap groove 41 and leaving the mixing pan 5.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cyclone magnetic dewatering tank for mineral processing, comprising a tank body, a feed cylinder disposed within the tank body, and a water supply pipe disposed from bottom to top at the bottom of the tank body, characterized in that: A water distribution cap is connected to the top of the water supply pipe, and the water distribution cap is located directly below the feed cylinder; The water-dividing cap includes: Hat groove; The cap is fastened to the cap groove, and the cap and the cap groove form a receiving space; the water supply pipe is connected to the cap groove and communicates with the receiving space; The water outlet pipe is located circumferentially in the cap groove.

2. The cyclone magnetic dewatering tank for mineral processing according to claim 1, characterized in that: The outlet of the water pipe is oriented tangent to the circumference of the cap groove.

3. The cyclone magnetic dewatering tank for mineral processing according to claim 1, characterized in that: The cap groove is tapered when projected in the main view.

4. The cyclone magnetic dewatering tank for mineral processing according to claim 1, characterized in that: A mixing disc is provided circumferentially around the cap groove and at the outlet of the water outlet pipe. The mixing disc is an arc-shaped disc body, including a first opening end for water inlet and a second opening end for water outlet. The first opening end is connected to the water outlet pipe.

5. A cyclone magnetic dewatering tank for mineral processing according to claim 4, characterized in that: The opening width of the first opening end is smaller than the opening width of the second opening end.

6. A cyclone magnetic dewatering tank for mineral processing according to claim 1, characterized in that: Several baffles are evenly distributed at the top edge of the cap groove, and a flow trough is formed between two adjacent baffles. The flow trough is correspondingly set with the mixing plate.

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