Multi-layer efficient thickener for copper slag mineral separation

Abstract

The utility model relates to a multi-layer efficient thickener for copper slag beneficiation, which comprises a plurality of layers of thickeners arranged along the longitudinal direction, the thickeners on each layer have the same structure, and a sealing device is arranged between the thickener on the upper layer and the thickener on the lower layer; each layer of thickener comprises a charging barrel, a conical hopper is arranged at the lower end of the charging barrel, a working platform is arranged in the center of the top end of the charging barrel, a liquid distribution mechanism is arranged in the center below the working platform, the liquid distribution mechanism comprises a cylinder, an annular liquid distribution plate is arranged in the cylinder, and a spiral flow guide groove is formed in the liquid distribution plate; a feeding pipe arranged in the radial direction is arranged below the working platform, one end of the feeding pipe is connected to an upstream ore pulp output port, the other end of the feeding pipe extends into the cylinder and is provided with a flow dividing connector, and an outlet of the flow dividing connector is aligned to the liquid distribution plate; two groups of flocculation stirring mechanisms are also arranged below the working platform and deviate from a central shaft of the charging barrel; the solid-liquid separation effect is obviously improved, the copper slag mineral separation efficiency can be obviously improved, the energy consumption is reduced, and the occupied area is reduced.

Description

Technical Field

[0001] This utility model relates to the field of thickeners, specifically a multi-layer high-efficiency thickener for copper slag beneficiation. Background Technology

[0002] With the rapid development of the non-ferrous metals industry, the output of copper slag is increasing daily. Copper slag beneficiation, as a crucial link in resource recycling and reuse, places stringent demands on its processing equipment. Traditional thickeners have revealed many shortcomings when dealing with copper slag slurry. On the one hand, copper slag particles have complex characteristics, with a high proportion of fine particles and unique surface properties, making it difficult for conventional flocculation methods to effectively agglomerate them, resulting in slow settling speeds and requiring large equipment volumes to accommodate settling time, thus occupying a large space. On the other hand, the underflow concentration fluctuates significantly, failing to consistently meet the requirements of subsequent dewatering equipment. This affects concentrate quality and disrupts the overall process flow continuity. Moreover, the equipment consumes a high amount of energy to maintain operation and barely achieve the required separation effect, greatly increasing beneficiation costs and energy consumption. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art and to provide a multi-layer high-efficiency thickener for copper slag beneficiation.

[0004] This utility model provides the following technical solution: a multi-layer high-efficiency thickener for copper slag beneficiation, comprising a multi-layer thickener arranged longitudinally, each layer of the thickener having the same structure, and a sealing device installed between the upper and lower layers of the thickener; each layer of the thickener includes a material cylinder, a conical hopper at the lower end of the material cylinder, a working platform at the center of the top of the material cylinder, and a liquid distribution mechanism at the center below the working platform, the liquid distribution mechanism including a cylinder, an annular liquid distribution plate inside the cylinder, and a spiral guide groove on the liquid distribution plate; a feed pipe arranged radially below the working platform, one end of the feed pipe connected to the upstream slurry outlet, and the other end extending into the cylinder and equipped with a diverter, the outlet of the diverter being aligned with the liquid distribution plate; two sets of flocculation and stirring mechanisms are also installed below the working platform, the two sets of flocculation and stirring mechanisms being offset from the central axis of the material cylinder.

[0005] Preferably, there are two liquid distribution plates, which are arranged coaxially with the cylinder. The diversion joint is located above the upper liquid distribution plate. Both liquid distribution plates are provided with a number of leakage holes along the spiral guide groove. The diameter of the leakage holes of the lower liquid distribution plate is smaller than that of the upper liquid distribution plate.

[0006] Preferably, each leakage hole on the liquid distribution plate is arranged at 5°-10° intervals along the center line.

[0007] Preferably, the two sets of flocculation and stirring mechanisms are located at different liquid level heights. The upper flocculation and stirring mechanism A includes a central rotating shaft, the top of which is connected to the working platform, and a horizontally arranged rake frame at the bottom of the central rotating shaft. The diameter of the rake frame is 1 / 3 to 1 / 2 of the material cylinder.

[0008] Furthermore, the flocculation and stirring mechanism B located below includes a central rotating shaft, the top of which is connected to the working platform, and a horizontally arranged support rod at the bottom of the central rotating shaft. Several vertically arranged serrated rods are evenly distributed on the support rod, and the rotation diameter of the support rod is 1 / 3 to 1 / 2 of the diameter of the rake frame.

[0009] Furthermore, the central shaft rotation speed of the flocculation stirring mechanism B is higher than that of the central shaft rotation speed of the flocculation stirring mechanism A.

[0010] Compared with the prior art, the beneficial effects of this utility model are: significantly improving the solid-liquid separation effect, significantly improving the efficiency of copper slag beneficiation, and reducing energy consumption; and reducing the footprint by setting up a multi-layer thickener. Attached Figure Description

[0011] Figure 1 This is a top view of the present invention;

[0012] Figure 2 yes Figure 1 AA view;

[0013] Figure 3 yes Figure 2 BB view;

[0014] Figure 4 yes Figure 2 Enlarged view of point V;

[0015] Figure 5 yes Figure 4 GG view;

[0016] Figure 6 yes Figure 4 HH view;

[0017] Figure 7 yes Figure 4 II view;

[0018] In the diagram: 1. Material cylinder; 2. Working platform; 3. Flocculation and stirring mechanism A; 4. Flocculation and stirring mechanism B; 5. Feed pipe; 6. Diverter joint; 7. Liquid distribution mechanism; 8. Liquid distribution plate A; 9. Liquid distribution plate B. Detailed Implementation

[0019] Please see Figure 1-7This embodiment is a multi-layer high-efficiency thickener for copper slag beneficiation, comprising a multi-layer thickener arranged longitudinally, each layer having the same structure, with a sealing device installed between the upper and lower thickeners; each thickener includes a material cylinder 1, which contains a clarification zone, a settling zone, and a compression zone arranged sequentially from top to bottom. A conical hopper is located at the lower end of the material cylinder 1, and a working platform 2 is mounted at the center of the top of the material cylinder 1. A liquid distribution mechanism 7 is located at the center below the working platform 2. The liquid distribution mechanism 7 includes a cylinder containing two annular liquid distribution plates, namely, liquid distribution plate A8 and liquid distribution plate B9, arranged coaxially with the cylinder. Each of the above is equipped with a spiral guide groove. The liquid distribution plate A8 has several φ10 leakage holes along the spiral guide groove, with one leakage hole every 5°-10° along the center line. The leakage holes of the liquid distribution plate B9 have a diameter of φ5 and are arranged every 5°-10° along the center line. Below the working platform 2, there is a radially arranged feed pipe 5. One end of the feed pipe 5 is connected to the upstream slurry outlet, and the other end extends into the cylinder and is equipped with a diverter 6. The outlet of the diverter 6 is aligned with the liquid distribution plate. Below the working platform 2, there are also two sets of flocculation and stirring mechanisms, which are set off from the central axis of the material cylinder 1. The diverter 6 is located above the upper liquid distribution plate.

[0020] The diversion connector 6 described in this embodiment is a Y-type connector. By setting the Y-type connector, the slurry is more dispersed when it enters the replenishment mechanism. After the slurry flows out of the outlet of the Y-type connector, it falls onto the distribution plate A8. The liquid flow is made into a spiral shape by the spiral guide groove and falls onto the distribution plate B9 through the leakage hole. It flows along the spiral guide groove of the distribution plate B9 and is evenly distributed to the clarification zone through the leakage hole.

[0021] Preferably, the two sets of flocculation and stirring mechanisms are located at different liquid level heights. The upper flocculation and stirring mechanism A3 includes a central rotating shaft, the top of which is connected to the working platform 2. The bottom of the central rotating shaft is provided with a horizontally arranged rake frame, the diameter of which is 1 / 3 to 1 / 2 of the material cylinder 1.

[0022] Furthermore, the flocculation and stirring mechanism B4 located below includes a central rotating shaft, the top of which is connected to the working platform 2, and a horizontally arranged support rod at the bottom of the central rotating shaft. Several vertically arranged serrated rods are evenly distributed on the support rod, and the rotation diameter of the support rod is 1 / 3 to 1 / 2 of the diameter of the rake frame.

[0023] Furthermore, the central shaft of the flocculation stirring mechanism B4 rotates at 80-120 rpm, and the lower serrated rod serves as a shearing paddle; the central shaft of the flocculation stirring mechanism A3 rotates at 10-30 rpm, and the rake frame serves as a propulsion paddle, made of flexible polyurethane material.

[0024] The working principle of this utility model is as follows: The slurry from the pre-process flows into the upper and lower thickeners through the feed pipe 5. The two thickeners operate independently. Each thickener has a clarification zone, a settling zone, and a compression zone. The slurry flows out from the diversion joint 6 at the end of the feed pipe 5 onto the distribution plate A8, then flows through the leakage hole of the guide groove onto the distribution plate B9, and finally flows into the clarification zone from the leakage hole. The flow velocity of the slurry entering the clarification zone is approximately 0.5-1.5 m / s. The slurry entering the clarification zone is pushed by the flocculation stirring mechanism A3 and sheared by the flocculation stirring mechanism B4, which allows the slurry to better agglomerate with the flocculant. Then, it passes through the settling zone and the compression zone to achieve concentration.

[0025] The underflow is discharged by an electric butterfly valve according to the concentration and pressure regulation, while the supernatant is collected and discharged through an overflow weir. Taking the processing of copper slag slurry with a copper content of about 1% and a particle size range of 0-200μm, and a processing capacity of 100-150m3 / h as an example, this thickener reduces the settling time by 30%-40% compared with traditional equipment, stabilizes the underflow concentration at 60%-70%, and reduces the solids content of the supernatant to below 0.5%. Compared with existing thickeners, the unit energy consumption is reduced by 25%-35%.

Claims

1. A multi-layer high-efficiency thickener for copper slag beneficiation, characterized in that: The application relates to a multi-layer thickener arranged along a longitudinal direction, each layer of the thickener having the same structure, and a sealing device arranged between the upper and lower layers of the thickener; each layer of the thickener comprises a barrel, a hopper arranged at the lower end of the barrel, a working platform arranged at the center of the top end of the barrel, a liquid distribution mechanism arranged at the center below the working platform, the liquid distribution mechanism comprising a cylinder, an annular liquid distribution plate arranged in the cylinder, and helical flow guide grooves arranged on the liquid distribution plate; a feeding pipe arranged along a radial direction is arranged below the working platform, one end of the feeding pipe is connected to an upstream slurry outlet, the other end of the feeding pipe extends into the cylinder and is provided with a flow distribution joint, and the outlet of the flow distribution joint is aligned with the liquid distribution plate; two groups of flocculation stirring mechanisms are further arranged below the working platform, and the two groups of flocculation stirring mechanisms are arranged away from the central axis of the barrel.

2. The multi-layer high-efficiency thickener for copper residue beneficiation according to claim 1, characterized in that: The liquid distribution plate is provided with two liquid distribution plates coaxially arranged with the cylinder, the flow distribution joint is arranged above the upper liquid distribution plate, and a plurality of liquid leakage holes are arranged along the helical flow guide grooves on the two liquid distribution plates; the diameter of the liquid leakage holes of the lower liquid distribution plate is smaller than that of the liquid leakage holes of the upper liquid distribution plate.

3. The multi-layer high-efficiency thickener for copper residue beneficiation according to claim 2, characterized in that: The liquid leakage holes on the liquid distribution plate are arranged at an interval of 5-10 degrees along a circle center line.

4. The multi-layer high-efficiency thickener for copper residue beneficiation according to claim 1, characterized in that: The two groups of flocculation stirring mechanisms are arranged at different liquid levels, the upper flocculation stirring mechanism A comprises a central shaft, the top of the central shaft is connected to the working platform, the bottom of the central shaft is provided with a horizontally arranged rake frame, and the diameter of the rake frame is 1 / 3-1 / 2 of the diameter of the barrel.

5. The multi-layer high-efficiency thickener for copper residue beneficiation according to claim 4, characterized in that: The lower flocculation stirring mechanism B comprises a central shaft, the top of the central shaft is connected to the working platform, the bottom of the central shaft is provided with a horizontally arranged support rod, a plurality of vertically arranged sawtooth rods are uniformly arranged on the support rod, and the rotating diameter of the support rod is 1 / 3-1 / 2 of the diameter of the rake frame.

6. A multi-deck high efficiency thickener for copper slag beneficiation according to claim 5, characterized in that: The rotating speed of the central shaft of the flocculation stirring mechanism B is higher than that of the central shaft of the flocculation stirring mechanism A.

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