Integrated system for recovering and processing tailings water

Abstract

The application provides a tailing water integrated recovery and treatment integrated system, which comprises a sedimentation tank, a homogenizing cavity integrated on one side of the upper portion of the sedimentation tank, a multi-channel sedimentation device arranged in the middle portion of the sedimentation tank, and a conical bottom collecting cavity arranged at the bottom of the sedimentation tank; the homogenizing cavity is connected with the inner cavity of the sedimentation tank through a first overflow port; the other side of the upper portion of the sedimentation tank is provided with a second overflow port; the conical bottom collecting cavity is provided with a discharge port at the bottom; a primary membrane filtration device is arranged and used for collecting tailing water flowing out of the second overflow port to perform solid-liquid separation treatment, and after the solid-liquid separation, the tailing water is divided into fine particle grade concentrate sand and filtrate which are discharged respectively; a water treatment module comprises a nano advanced oxidation device and a secondary membrane filtration device; a fine particle grade concentrate post-treatment system comprises a fine particle grade concentrate recovery device and a fine particle grade concentrate dressing and smelting system; the fine particle grade concentrate recovery device is used for collecting sediment and fine particle grade concentrate sand, and the collected material is low-grade concentrate; the fine particle grade concentrate dressing and smelting system is used for treating the low-grade concentrate to obtain high-grade concentrate.

Description

Technical Field

[0001] This invention relates to the field of tailings water recycling and treatment technology, and in particular to an integrated system for tailings water recycling and treatment. Background Technology

[0002] Mining, beneficiation, and smelting processes generate large amounts of tailings water, which typically contains a significant amount of solids. Previously, multi-stage physical sedimentation was used to treat this tailings water. The settled water was then chemically treated by a water treatment system before being discharged, while the sediment at the bottom was directly discharged into a tailings dam. However, this method cannot settle particles smaller than 10µm, which are discharged along with the water, leading to the discharge of fine-grained concentrate, increased water treatment difficulty, higher operating costs, and uncontrollable and unstable heavy metal contamination in the discharged water. Furthermore, the water supplied to the water treatment system contains a large amount of particles smaller than 10µm, resulting in low efficiency and high costs for conventional tailings water treatment. Therefore, improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated system for the recycling and treatment of tailings water to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An integrated system for the recycling and treatment of tailings water includes:

[0006] Sedimentation tank: A homogenization chamber is integrated on one side of the upper part, a multi-channel sedimentation device is provided in the middle, and a cone-bottom collection chamber is at the bottom; the homogenization chamber is used to receive tailings water that needs to be treated from the outside and to perform homogenization and conditioning treatment; the homogenization chamber is connected to the inner cavity of the sedimentation tank through a first overflow port; a second overflow port is provided on the other side of the upper part of the sedimentation tank; a discharge port is provided at the bottom of the cone-bottom collection chamber;

[0007] The primary membrane filtration unit is used to collect tailings water flowing out from the second overflow outlet and perform solid-liquid separation treatment. After solid-liquid separation, the water is separated into fine-grained concentrate and filtrate, which are discharged separately.

[0008] Water treatment module: includes a nano-advanced oxidation device and a secondary membrane filtration device; the nano-advanced oxidation device is used to collect the filtrate from the primary membrane filtration device and oxidize the filtrate, and the treated water is filtered through the secondary membrane filtration device.

[0009] The fine-grained concentrate post-processing system includes a fine-grained concentrate recovery device and a fine-grained concentrate beneficiation system. The fine-grained concentrate recovery device is used to collect the sediment discharged from the discharge port of the cone-bottom collection chamber and the fine-grained concentrate sand discharged from the primary membrane filtration device. The collected sediment and fine-grained concentrate sand are low-grade fine-grained concentrate. The fine-grained concentrate beneficiation system is used to process the low-grade fine-grained concentrate to obtain high-grade fine-grained concentrate.

[0010] According to a further description of the present invention, the homogenization chamber is provided with a stirring paddle; a mineral conditioning agent can be added to the homogenization chamber; the mineral conditioning agent is used to improve the solid-liquid dissociation degree of particulate matter in the tailings water.

[0011] According to a further description of the present invention, the multi-channel sedimentation device employs an inclined plate sedimentation device.

[0012] According to a further description of the present invention, the nano-advanced oxidation device integrates a nano-bubble generator, an oxygen generator, and an ozone generator.

[0013] According to a further description of the present invention, the water treated by the secondary membrane filtration device is used for reuse or discharge.

[0014] According to a further description of the present invention, the precipitate discharged from the discharge port of the cone-bottom collecting chamber and the fine-grained concentrate discharged from the primary membrane filtration device can also be directly supplied to the fine-grained concentrate beneficiation system.

[0015] The beneficial effects of this invention are as follows:

[0016] This design employs a sedimentation tank for pretreatment of tailings water. After homogenization and sedimentation, the precipitate is collected, and the supernatant is discharged to a primary membrane filtration unit for further filtration. Membrane filtration removes all solids from the water. The filtrate is then sent to the water treatment module for further processing. This water treatment module utilizes a nano-advanced oxidation device for advanced oxidation treatment. Because all solid particles are filtered out in the upstream process, water treatment costs are reduced and treatment efficiency is improved. The sediment collected in the sedimentation tank and the fine-grained concentrate sand filtered by the primary membrane filtration device are discharged to the fine-grained concentrate recovery device for collection. At this time, the ore sand collected by the fine-grained concentrate recovery device is a low-grade fine-grained concentrate with a grade of less than 5%. According to actual needs, the low-grade fine-grained concentrate can be sold externally, blended, or further processed by the fine-grained concentrate beneficiation system of this system to increase the grade of the fine-grained concentrate to obtain the required high-grade concentrate. This system can avoid ore loss and has high overall efficiency and low cost. Attached Figure Description

[0017] Figure 1This is a process flow diagram of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] like Figure 1 As shown, an integrated system for the recycling and treatment of tailings water includes:

[0020] Sedimentation tank 1: A homogenization chamber 11 is integrated on one side of the upper part, a multi-channel sedimentation device 13 is provided in the middle, and a conical bottom collection chamber 14 is located at the bottom. The homogenization chamber 11 is used to receive tailings water that needs to be treated externally and to homogenize and regulate it. The homogenization chamber 11 is connected to the inner cavity of sedimentation tank 1 through a first overflow port 111. A second overflow port 12 is provided on the other side of the upper part of sedimentation tank 1. A discharge port 141 is provided at the bottom of the conical bottom collection chamber 14. Tailings water is discharged into the homogenization chamber 11. In this embodiment, the homogenization chamber 11 is equipped with a stirring paddle to regulate the tailings water. The ore water is stirred and mixed evenly, and discharged from the first overflow port 111 into the sedimentation tank 1. The particulate matter is discharged into the cone bottom collection chamber 14 through the multi-channel sedimentation device 13. In this embodiment, the multi-channel sedimentation device 13 is an inclined plate sedimentation device 13. The upper clear liquid is discharged from the second overflow port 12. A mineral conditioning agent can be added to the homogenization chamber 11 of this design. For particulate matter that is not easy to settle, the mineral conditioning agent can improve the solid-liquid dissociation degree of particulate matter in the tailings water, accelerate the sedimentation efficiency, and perform preliminary filtration and collection of large particulate matter with a particle size greater than 20 μm.

[0021] Primary membrane filtration device 2: Used to collect tailings water flowing out from the second overflow port 12 for solid-liquid separation treatment. After solid-liquid separation, it is separated into fine-grained concentrate and filtrate and discharged separately. Small particles smaller than 20um in the liquid are filtered out by the primary membrane filtration device 2. The pore size of the filter membrane of the primary membrane filtration device 2 can reach 0.1um. In actual use, multi-layer filter membranes can also filter out particles as small as 0.02um. Therefore, the primary membrane filtration device 2 can collect all the required particles and prevent them from flowing out.

[0022] Water treatment module 3 includes a nano-advanced oxidation device 31 and a secondary membrane filtration device 32. The nano-advanced oxidation device 31 is used to collect the filtrate from the primary membrane filtration device 2 and oxidize the filtrate. The treated water is then filtered through the secondary membrane filtration device 32. The nano-advanced oxidation device 31 integrates a nano-bubble generator, an oxygen generator, and an ozone generator. The oxygen generator produces oxygen, which is then supplied to the ozone generator via the nano-bubble generator. The ozone generator produces nano-ozone bubbles to oxidize the water, significantly improving work efficiency. Furthermore, since all particulate matter in the water has been filtered and collected in the previous filtration process, the increased processing cost in the nano-advanced oxidation device 31 is avoided. The water oxidized by the nano-advanced oxidation device 31 is then filtered through the secondary membrane filtration device 32. The filtered water is collected in a water tank 33. The water filtered by the secondary membrane filtration device 32 meets the discharge standards. The filtrate is then reused within the system or discharged externally according to actual needs.

[0023] The fine-grained concentrate post-processing system 4 includes a fine-grained concentrate recovery device 41 and a fine-grained concentrate beneficiation system 42. The fine-grained concentrate recovery device 41 collects the sediment discharged from the discharge port 141 of the cone-bottom collection chamber 14 and the fine-grained concentrate sand discharged from the primary membrane filtration device 2. The collected sediment and fine-grained concentrate sand are low-grade fine-grained concentrate. The fine-grained concentrate beneficiation system 42 processes the low-grade fine-grained concentrate to obtain high-grade fine-grained concentrate. The sediment collected in the sedimentation tank 1 and the fine-grained concentrate sand filtered by the primary membrane filtration device 2 are discharged to the fine-grained concentrate recovery device 41 for collection. The ore collected by the ore recovery device 41 is a low-grade fine-grained concentrate with a grade of less than 5%. Depending on actual needs, this low-grade fine-grained concentrate can be sold externally, processed for blending, or further processed by the fine-grained concentrate beneficiation system 42 of this system. In the fine-grained concentrate beneficiation system 42, water or acid / alkali solution needs to be added for beneficiation and smelting processing according to mineral requirements. The fine-grained concentrate beneficiation system 42 is equipped with a three-stage filtration membrane. The three-stage filtration membrane purifies the solution after smelting. The filtered metal solution is then reduced to obtain the required high-grade concentrate, thereby increasing the grade of the fine-grained concentrate to obtain a high-grade concentrate with a grade of ≥20%. The filtered residue is then discharged.

[0024] The sediment discharged from the discharge port 141 of the cone-bottom collecting chamber 14 and the fine-grained concentrate discharged from the primary membrane filter 2 can be directly supplied to the fine-grained concentrate beneficiation system 42. According to actual needs, if further processing is required through this beneficiation, the sediment discharged from the discharge port 141 of the collecting chamber 14 and the fine-grained concentrate discharged from the primary membrane filter 2 can be supplied to the fine-grained concentrate beneficiation system 42 through system control. After the fine-grained concentrate beneficiation system 42 is full, it will be discharged to the fine-grained concentrate recovery device 41 for buffering and further processing.

[0025] The above description is not intended to limit the scope of the present invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. An integrated system for the recycling and treatment of tailings water, characterized in that: include: Sedimentation tank: One side of the upper part integrates a homogenization chamber, the middle part is equipped with a multi-channel sedimentation device, and the bottom is a conical bottom collection chamber; the homogenization chamber is used to receive and homogenize the tailings water that needs to be treated from outside; the homogenization chamber is connected to the inner cavity of the sedimentation tank through a first overflow port; the other side of the upper part of the sedimentation tank is equipped with a second overflow port; the bottom of the conical bottom collection chamber is equipped with a discharge port; Primary membrane filtration device: used to receive the tailings water flowing out from the second overflow port for solid-liquid separation treatment, after which it is separated into fine-grained concentrate sand and filtrate, which are discharged separately; Water treatment module: includes a nano-advanced oxidation device and a secondary membrane filtration device; the nano- The advanced oxidation unit is used to collect the filtrate from the primary membrane filtration unit and oxidize it. The treated water is then filtered through a secondary membrane filtration unit. The fine-particle concentrate post-processing system includes a fine-particle concentrate recovery unit and a fine-particle concentrate beneficiation system. The fine-particle concentrate recovery unit collects the sediment discharged from the discharge port of the cone-bottom collection chamber and the fine-particle concentrate sand discharged from the primary membrane filtration unit. The collected sediment and fine-particle concentrate sand are low-grade fine-particle concentrate. The fine-particle concentrate beneficiation system processes the low-grade fine-particle concentrate to obtain high-grade fine-particle concentrate.

2. The integrated tailings water recycling and treatment system according to claim 1, characterized in that: The homogenization chamber is equipped with a stirring paddle; a mineral conditioning agent can be added to the homogenization chamber; the mineral conditioning agent is used to improve the solid-liquid dissociation degree of particulate matter in the tailings water.

3. The integrated tailings water recycling and treatment system according to claim 1, characterized in that: The multi-channel sedimentation device adopts an inclined plate sedimentation device.

4. The integrated tailings water recycling and treatment system according to claim 1, characterized in that: The advanced nano-oxidation device integrates a nano-bubble generator, an oxygen generator, and an ozone generator.

5. The integrated tailings water recycling and treatment system according to claim 1, characterized in that: Water treated by the two-stage membrane filtration device is used for reuse or discharge.

6. The integrated tailings water recycling and treatment system according to claim 1, characterized in that: The sediment discharged from the discharge port of the cone-bottom collecting chamber and the fine-grained concentrate discharged from the primary membrane filtration device can be directly supplied to the fine-grained concentrate beneficiation system.

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