A flotation mixing tank

Abstract

The utility model belongs to the technical field of mineral processing equipment, and disclose a kind of flotation mixing tank, including mixing tank body, and static mixer and liquid outlet pipe respectively with the penetration of both sides of mixing tank body, static mixer and liquid outlet pipe are respectively located the water inlet end and water outlet end of mixing tank body, and static mixer is higher than the height of liquid outlet pipe, the inside of mixing tank body includes the baffle one and baffle two along the width direction of mixing tank body sequentially, and baffle one and baffle two are used to separate the internal space of mixing tank body, by above-mentioned scheme, it is only mixed to the slurry discharged by multiple pipelines in the process of using flotation mixing tank, and is discharged from single liquid outlet pipeline, there is different pipeline grade inconsistency of slurry discharge in this mode, when not fully mixed stirring, slurry will appear stratification, concentrate grade is different after each stage of flotation, it is prone to cause analysis test result and actual error greater problem.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing equipment technology, specifically a flotation mixing cell. Background Technology

[0002] The core purpose of the flotation mixing cell is to uniformly mix concentrate slurries of different grades and concentrations produced by multi-stage flotation without power, thereby eliminating fluctuations in slurry composition and providing stable quality raw materials for downstream processes.

[0003] In existing flotation mixing cells, the slurry discharged from multiple pipelines is simply mixed and discharged from a single outlet pipeline. This method results in inconsistent slurry grades from different pipelines. Without sufficient mixing, the slurry will stratify, leading to different concentrate grades after each flotation stage. This can easily cause significant discrepancies between analytical test results and actual values. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a flotation mixing cell, which has the advantage of forcibly mixing dispersed high-grade fine-grained slurry and low-grade coarse-grained slurry into a single slurry with uniform grade and stable concentration through internal static mixers, stepped guide walls and other structures, resulting in more accurate measurement results in subsequent measurements.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flotation mixing tank, comprising a mixing tank body, and a static mixer and a liquid outlet pipe respectively communicating with both sides of the mixing tank body, wherein the static mixer and the liquid outlet pipe are respectively located at the water inlet end and the water outlet end of the mixing tank body, and the static mixer is higher than the height of the liquid outlet pipe. The interior of the mixing tank body includes a first partition and a second partition arranged sequentially along the width direction of the mixing tank body, and the first partition and the second partition are used to divide the internal space of the mixing tank body; The mixing tank body is provided with a stepped flow guide wall inside. The stepped flow guide wall includes a top of the wall and a drain pipe inside the top of the wall. The drain pipe is inclined to the mixing tank body, and the outlet end of the drain pipe faces the bottom of the mixing tank body. The top of the wall is close to and parallel to the first partition. The bottom of the top of the wall has a certain gap with the bottom of the mixing tank body. Several sets of flow channels are opened at the bottom of the first partition near the highest point of the stepped flow guide wall.

[0006] Preferably, the drain pipes are provided in several groups, with drain pipes of different heights arranged in a staggered manner. The outlet of the drain pipe faces the bottom of the mixing tank body, which is used to guide the upper part of the thin slurry inside the stepped guide wall to the bottom, so as to realize vertical convection mixing.

[0007] Preferably, one side of the top of the wall has an arc, and a support frame is fixedly connected to the bottom of the top of the wall to support the top of the wall.

[0008] Preferably, the height of the first partition is higher than the height of the second partition, and the bottom end of the first partition has a liquid outlet groove.

[0009] Preferably, the static mixer includes a shell and cross-shaped blades. The cross-shaped blades are fixed inside the shell and are evenly distributed along the inner wall of the shell. Adjacent sets of cross-shaped blades are staggered at 90°. The cross-shaped blades are welded and fixed to the inner wall of the shell and are used to perform preliminary cutting and mixing of the concentrate entering the mixing tank.

[0010] Preferably, two stepped guide walls are provided, with their height decreasing from the feed end to the liquid outlet end.

[0011] Preferably, the bottom of the mixing tank body is inclined from the inlet end to the outlet end.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model incorporates a stepped guide wall inside the mixing tank. When the slurry flows from the filling end into the stepped guide wall, it flows from the top of the wall towards one side of the stepped surface and then towards the back of the wall. During this flow, the liquid flowing from the back of the wall accelerates towards the bottom under the influence of potential energy, thus mixing the slurry at the bottom. Another portion of the slurry permeates through the gaps at the bottom of the wall and the inclined drain pipe. The bottom gaps allow the concentrated slurry at the bottom of the tank to flow upwards, while the inclined guide pipe... The flow holes guide the upper dilute slurry downwards, forming vertical convection, which allows slurries of different concentrations to fully exchange on both sides of the wall, breaking up the upper and lower layers. Two sets of baffles of different heights are added inside the mixing tank. Part of the slurry flowing out from the bottom of baffle one enters between baffle one and baffle two, while the other part of the slurry crosses the top of baffle one and flows from the top of baffle one into the space between baffle one and baffle two. The upper and lower slurries are mixed. After the above three mixing processes, the concentrate is uniformly mixed, the mixing is more uniform, the sampling accuracy is improved, and it is significantly beneficial to save reagents and improve the recovery rate.

[0013] 2. This utility model adds a static mixer. The cross-shaped blades inside the static mixer can mix high-grade and low-grade slurries through vortex convection, and no power source is required in this process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the downward tilting drain pipe of this utility model; Figure 3 This is a schematic diagram showing the structure of the second partition being lower than the first partition of this utility model; Figure 4 This is a schematic diagram of the cross-shaped blade of this utility model; Figure 5 This is a schematic diagram of the static mixer of this utility model.

[0015] In the diagram: 1. The mixing tank body; 2. Static mixer; 21. Housing; 22. Cross-shaped blades; 3. Discharge pipe; 4. Partition 1; 5. Partition 2; 6. Stepped flow guide wall; 61. Wall top; 62. Drain pipe; 63. Support frame. Detailed Implementation

[0016] 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.

[0017] like Figures 1 to 5 As shown, this utility model provides a flotation mixing tank, including a mixing tank body 1, and a static mixer 2 and a liquid outlet pipe 3 that are respectively connected to both sides of the mixing tank body 1. The static mixer 2 and the liquid outlet pipe 3 are located at the water inlet end and the water outlet end of the mixing tank body 1, respectively, and the static mixer 2 is higher than the height of the liquid outlet pipe 3. The interior of the mixing tank body 1 includes a first partition 4 and a second partition 5 arranged sequentially along the width direction of the mixing tank body 1, and the first partition 4 and the second partition 5 are used to divide the internal space of the mixing tank body 1. The mixing tank body 1 is equipped with a stepped guide wall 6 inside. The stepped guide wall 6 includes a top wall 61 and a drain pipe 62 inside the top wall 61. The drain pipe 62 is inclined to the mixing tank body 1, and the outlet end of the drain pipe 62 faces the bottom of the mixing tank body 1. The top wall 61 is close to the partition 4 and parallel to the partition 4. The bottom of the top wall 61 has a certain gap with the bottom of the mixing tank body 1. Several sets of flow channels are opened at the bottom of the partition 4 on the side close to the highest point of the stepped guide wall 6.

[0018] In this example, there is a certain gap between the top of the wall 61 and the partition 4, and the height of the top of the wall 61 is lower than the height of the partition 4 to prevent the slurry from directly crossing the partition 4. The partition 4 is used to block the surging slurry. The slurry is diverted from the top of the wall 61, and a part of it flows from one end of the wall 61 near the partition 4. As the slurry flows from high to low, it has a certain potential energy. This potential energy impacts the bottom of the slurry, breaking the initial stratification of the upper and lower layers. This process allows the surface and middle layers of slurry to be mixed. At the other end of the wall 61, the slurry flows along the stepped wall 61 to the bottom of the mixing tank body 1. During the flow, the slurry at the horizontal position of the top of the wall 61 is injected into the drain pipe 62. The slurry is sprayed from the drain pipe 62 to the bottom of the mixing tank body 1, forming vertical convection, so that slurries of different concentrations can be fully exchanged on both sides of the wall.

[0019] Specifically, the drain pipes 62 are provided in several groups, and the drain pipes 62 at different heights are arranged in a staggered manner. The outlet of the drain pipes 62 faces the bottom of the mixing tank body 1, which is used to guide the upper part of the thin slurry inside the stepped guide wall 6 to the bottom, so as to realize vertical convection mixing.

[0020] Furthermore, an arc is provided on one side of the top of the wall 61, and each section of the wall 61 is rounded to reduce the impact and wear of the slurry. The edges of the flow guide holes on the wall surface are chamfered to prevent ore from getting stuck. A support frame 63 is fixedly connected to the bottom of the top of the wall 61 to support the top of the wall 61.

[0021] Furthermore, the height of partition 4 is higher than that of partition 5. A liquid outlet groove is opened at the bottom of partition 4. The height of partition 4 decreases from the feed end to the liquid outlet end. There is a certain gap between partition 4 and partition 5 to allow sufficient flow space for the subsequent slurry to form a circulation, and to avoid insufficient mixing due to excessive resistance during liquid mixing caused by too small a gap.

[0022] It is worth noting that the static mixer 2 includes a shell 21 and cross-shaped blades 22. The cross-shaped blades 22 are fixed inside the shell 21 and close to the water inlet end of the shell 21. The slurry discharged after mixing from the cross-shaped blades 22 flows along the inside of the shell 21 to the liquid outlet end, which can reduce the impact speed. The cross-shaped blades 22 are evenly distributed circumferentially along the inner wall of the shell 21. Adjacent sets of cross-shaped blades 22 are arranged at 90° staggered. The cross-shaped blades 22 are welded and fixed to the inner wall of the shell 21, and are used to perform preliminary cutting and mixing of the concentrate entering the mixing tank body 1.

[0023] Two stepped guide walls are set up, with a decreasing height distribution from the feed end to the liquid outlet end. This guides the slurry to form a complex flow of overturning and penetration, breaking up the upper and lower layers, and allowing slurries of different grades to be mixed more evenly.

[0024] The bottom of the mixing tank body 1 is inclined from the inlet end to the outlet end to avoid slurry backflow. The slurry flows along the inclined bottom end of the mixing tank body 1 towards the outlet end, which facilitates slurry flow.

[0025] The mixing tank body 1 is existing technology and will not be described in detail here. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this utility model and will not be described in detail here. The "front, rear, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0026] Working principle: When the slurry flows through the cross-shaped blades 22, it is forcibly divided into multiple sub-flows. High-grade and low-grade slurries are mixed through vortex convection, while coarse slurry can pass smoothly through the gaps between the baffles and flow along the outer shell 21 towards the feed end of the mixing tank body 1. The slurry flows out from the inlet end of the mixing tank body 1 and impacts the top of the wall 61. After the top of the wall 61 is blocked by the first high guide wall, part of the slurry flows over the top of the wall in the form of a "waterfall" and impacts the slurry layer below at high speed, breaking the initial stratification of thin upper and thick lower. Another part of the slurry seeps through the gap at the bottom of the wall and the inclined drain pipe 62. The gap at the bottom allows the thick slurry at the bottom of the tank to flow upward, and the inclined guide hole guides the thin slurry at the top to spray downward, forming vertical convection, so that the slurry of different concentrations can be fully exchanged on both sides of the wall. The slurry mixed by the first wall continues to flow to the bottom of the first baffle 4. When the slurry inflow is large, it flows from the top of the first baffle 4 to the second baffle 5 and stays between the first baffle 4 and the second baffle 5. When the slurry crosses the top of the second baffle 5, the slurry flows from one side of the second baffle 5 to the other side of the mixing tank body 1 and is discharged from the outlet pipe 3. The process of crossing and seeping over is repeated, forming a multi-stage circulating flow in the mixing tank body 1.

[0027] It should be noted that in utility models, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0028] 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 flotation mixing tank, comprising a mixing tank body (1), and a static mixer (2) and a liquid outlet pipe (3) respectively communicating with both sides of the mixing tank body (1), characterized in that: The static mixer (2) and the outlet pipe (3) are located at the inlet and outlet ends of the mixing tank body (1), respectively, and the static mixer (2) is higher than the outlet pipe (3). The interior of the mixing tank body (1) includes a first partition (4) and a second partition (5) arranged sequentially along the width direction of the mixing tank, and the first partition (4) and the second partition (5) are used to divide the interior space of the mixing tank body (1); The mixing tank body (1) is provided with a stepped guide wall (6) inside. The stepped guide wall (6) includes a top (61) and a drain pipe (62) inside the top (61). The drain pipe (62) is inclined to the mixing tank body (1), and the outlet end of the drain pipe (62) faces the bottom of the mixing tank body (1). The top (61) is close to the partition (4) and parallel to the partition (4). The bottom of the top (61) has a gap with the bottom of the mixing tank body (1). Several sets of flow channels are opened at the bottom of the partition (4) on the side close to the highest point of the stepped guide wall (6).

2. The flotation mixing tank according to claim 1, characterized in that: The drain pipe (62) is provided in several groups, and the drain pipes (62) at different heights are arranged in a staggered manner. The outlet of the drain pipe (62) faces the bottom of the mixing tank body (1) and is used to guide the upper part of the thin slurry inside the stepped guide wall (6) to the bottom to achieve vertical convection mixing.

3. The flotation mixing cell according to claim 1, characterized in that: The top of the wall (61) has an arc on one side, and a support frame (63) is fixedly connected to the bottom of the top of the wall (61) to support the top of the wall (61).

4. A flotation mixing cell according to claim 1, characterized in that: The height of the first partition (4) is higher than that of the second partition (5), and the bottom end of the first partition (4) is provided with a liquid outlet groove.

5. A flotation mixing tank according to claim 1, characterized in that: The static mixer (2) includes a shell (21) and cross-shaped blades (22). The cross-shaped blades (22) are fixed inside the shell (21). The cross-shaped blades (22) are evenly distributed along the inner wall of the shell (21). Two adjacent sets of cross-shaped blades (22) are arranged at 90° in an alternating pattern. The cross-shaped blades (22) are welded and fixed to the inner wall of the shell (21) for preliminary cutting and mixing of the concentrate entering the mixing tank body (1).

6. A flotation mixing cell according to claim 1, characterized in that: The stepped guide wall (6) is provided in two layers, with a decreasing height distribution from the feed end to the liquid outlet end.

7. A flotation mixing cell according to claim 1, characterized in that: The bottom of the mixing tank body (1) is inclined from the inlet end to the outlet end.

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