Continuous treatment device for metal ore flotation wastewater

Abstract

The invention discloses a continuous treatment device for metal ore flotation wastewater, which comprises a sedimentation tank and a fine washing tank connected through a circulation pipeline, and the bottom of the sedimentation tank is provided with a telescopic moving baffle plate to form tidal sealing so as to simultaneously neutralize and precipitate the wastewater. Heavy metal ions in the flotation wastewater are removed step by step through two chemical precipitation methods, and when a large amount of settled sludge is generated in a neutralization precipitation method, the telescopic and movable partition plate is adopted for tidal movement, so that two layers of settling spaces are formed in the settling pond from bottom to top, and the settling effect is improved. The sludge can be further attenuated in the sedimentation space at the bottom layer, so that the environmental problem caused by direct discharge of the settled sludge is avoided, the treatment efficiency of the sedimentation tank can be improved through the double-layer sedimentation space, and the settled sludge and wastewater can be fed into the sedimentation space at the bottom layer to be settled by opening the baffle after the neutralization is completed; and the three-dimensional space is fully utilized, and meanwhile, continuous precipitation can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a continuous treatment device for metal ore flotation wastewater. Background Art

[0002] Metal mine flotation wastewater is a major source of industrial wastewater, with emissions reaching 200 million tons per year. Due to the limitations of existing mineral processing technologies, large amounts of toxic heavy metal ions and collectors remain in flotation wastewater. However, these residual heavy metal ions and collectors can cause unintended mineral activation, altering the floatability and selectivity of target minerals and severely impacting the stable operation of flotation circuits.

[0003] In order to improve the separation index of flotation, the effective removal of heavy metal ions and collectors, two types of pollutants that coexist in flotation wastewater, is the only way to recycle and reuse flotation wastewater.

[0004] Since the components of flotation wastewater are complex and the components cross and react with each other, thus forming complex pollutants, the recycling and reuse of flotation wastewater is seriously affected. In the existing technology, the acid-base neutralization precipitation method is generally used for preliminary treatment. When removing heavy metal ions, this method adjusts the pH value of the flotation wastewater by adding acid-base agents to cause the heavy metal ions to precipitate. Although this method is simple to operate, it will produce a large amount of sludge. In addition, in a single treatment, the precipitate needs to be separated by natural sedimentation or centrifugal separation, which requires the special setting of a static tank or centrifugal facility for separation, which squeezes the already limited mining space. Summary of the Invention

[0005] The object of the present invention is to provide a continuous treatment device for metal ore flotation wastewater, so as to solve the technical problem in the prior art that a separate sedimentation space needs to be built when treating flotation wastewater by acid-base neutralization.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A continuous treatment device for metal ore flotation wastewater, comprising: Sedimentation tank, the bottom of which is tidally closed by a telescopic baffle, so as to simultaneously neutralize and precipitate wastewater. When the baffle closes the bottom of the sedimentation tank, the baffle closes the bottom of the sedimentation tank to form a sludge settling area. The sludge settled in the sludge settling area is directly discharged after treatment. At this time, the baffle acts as a temporary bottom plate to continue to receive new flotation wastewater, and the baffle is closed and scraped into the sludge settling area by friction with the side wall of the sedimentation tank; A fine washing tank is provided on one side of the sedimentation tank, and the sedimentation tank and the fine washing tank are connected via a flow pipe; The sedimentation tank adjusts the pH value of the flotation wastewater to neutralize and precipitate heavy metals at the bottom of the tank to reduce the heavy metal ion content. The flotation wastewater after neutralization and precipitation flows into the fine washing tank to produce ferrite through the co-precipitation method of iron salts.

[0007] Furthermore, when the flotation wastewater is subjected to acid-base neutralization treatment in the sedimentation tank, the baffle is closed. When the flotation wastewater needs to be left to settle after acid-base neutralization treatment, the baffle is opened to allow the settled wastewater to enter the sludge settling area for natural sedimentation. In the subsequent continuous treatment process, the baffle is opened tidally according to the cycle of acid-base neutralization treatment to complete the natural transfer of flotation wastewater and natural sedimentation of sludge. After the natural sedimentation is completed, the flotation wastewater enters the fine washing tank.

[0008] Furthermore, a raised layer is provided at the bottom of the sedimentation tank so that the bottom surface of the sedimentation tank is higher than the fine washing tank; A partition assembly is provided on the side of the sedimentation tank, a three-dimensional groove is provided on the partition assembly, and rectangular openings communicating with the three-dimensional groove are respectively provided on the four sides of the sedimentation tank; A movable plate is provided inside each three-dimensional slot of the partition assembly. The movable plates distributed around the sedimentation tank form baffles when the driven assembly drives the sedimentation tank to close the sedimentation tank.

[0009] Furthermore, an inner groove is provided on the outer side of the movable plate, and a guide strip is provided on the side wall of the sedimentation tank, and the movable plate is limited by the mutual engagement of the inner groove and the guide strip when it is extended or retracted; On the movable plates moving toward each other, one of the movable plates is provided with an extended ridge on its side, and the other movable plate is provided with an inner groove on its side. When the movable plates are fully extended, they are locked with each other to form a sealed baffle.

[0010] Furthermore, a sealing strip is provided inside the three-dimensional groove near the rectangular opening, and the sealing strip is used to completely seal the three-dimensional groove to prevent water from flowing into the three-dimensional groove; The side surface of the sedimentation tank is provided with pusher inclined plates at the upper and lower ends of the rectangular opening respectively, and the pusher inclined plates are used to push away the sludge on the movable plate when the movable plate moves inwardly.

[0011] Furthermore, at least one automatic reset support assembly is provided at the lower end of each movable plate. When the movable plate is retracted, the automatic reset support assembly rotates close to the movable plate to store the automatic reset support assembly. When the movable plate is extended, the automatic reset support assembly rotates to be perpendicular to the movable plate. At this time, the automatic reset support assembly is used to support the movable plate to bear the weight of the water. Wherein, the automatic reset support assembly includes a fixed pile mounted on the movable plate, and a rotating plate movably mounted on the fixed pile, and a supporting leg is mounted on the lower end of the rotating plate; A straight rod is installed between the two side plates of the fixed pile, and the two side plates of the rotating plate are movably installed on the straight rod and can rotate around the straight rod. A return spring is installed on the straight rod, and the return spring drives the supporting leg to rotate to a vertical state when the moving plate is extended.

[0012] Furthermore, the side surface of the supporting leg is flush with the side surface of the rotating plate, and the supporting leg rotates along with the rotating plate to be close to the moving plate when the moving plate retracts.

[0013] Furthermore, the partition assembly is provided with an open slot below the three-dimensional slot corresponding to the installation position of the automatic reset support assembly; A widening plate may be provided at the lower end of the support leg, wherein the size of the widening plate is larger than the cross-sectional size of the open slot; An elastic sealing plate that can move along the cavity of the open groove is provided inside the open groove. The inner side of the elastic sealing plate is installed on the inner end of the open groove through a compression spring. The elastic sealing plate closes the notch of the open groove when the movable plate is extended. When the movable plate is retracted, the elastic sealing plate is compressed by the supporting leg and retracts into the open groove.

[0014] Furthermore, input pipes are respectively provided around the bottom of the sedimentation tank.

[0015] Furthermore, the partition assembly is provided with a sewage extraction pipe on the side of the sludge settling area.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention removes heavy metal ions in flotation wastewater in steps through two chemical precipitation methods. When a large amount of settled sludge is generated by the neutralization precipitation method, a retractable and movable baffle is used for tidal movement, thereby forming two layers of settling space from bottom to top in the sedimentation tank. The sludge can be further detoxified in the sedimentation space at the bottom to avoid environmental problems caused by direct discharge of the settled sludge. The double-layered sedimentation space can improve the treatment efficiency of the sedimentation tank. After the neutralization is completed, the baffle can be opened to send the settled sludge and wastewater into the sedimentation space at the bottom for sedimentation, thereby fully utilizing the space on the three-dimensional surface and ensuring the continuous sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0018] Figure 1 Schematic diagram of the overall structure of a wastewater treatment device according to an embodiment of the present invention; Figure 2 Schematic diagram of the top view of the wastewater treatment device according to an embodiment of the present invention; Figure 3 Schematic diagram of the longitudinal structure of the partition assembly according to an embodiment of the present invention; Figure 4 Schematic diagram of the internal structure of a sedimentation tank according to an embodiment of the present invention; Figure 5 A schematic structural diagram of a movable plate and an inner groove on its side surface according to an embodiment of the present invention; Figure 6 A schematic structural diagram of a movable plate and extended ridges on its side surfaces according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of the automatic reset support assembly in a vertical state according to an embodiment of the present invention; Figure 8 This is a schematic longitudinal sectional view of the automatic reset support assembly in a horizontally stretched state according to an embodiment of the present invention; The numbers in the figure represent the following: 1- Sedimentation tank; 2- Fine washing tank; 3- Circulation pipe; 4- Baffle; 5- Separation assembly; 6- Inner groove; 7- Guide strip; 8- Sewage extraction pipe; 9- Sealing strip; 10- Pushing ramp; 11- Automatic reset support assembly; 12- Opening slot; 13- Elastic sealing plate; 14- Compression spring; 15- Injection pipe; 51-three-dimensional slot; 52-rectangular opening; 53-movable plate; 111 - fixed pile; 112 - rotating plate; 113 - supporting leg; 114 - straight rod; 115 - return spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1and Figure 2 As shown, the present invention provides a continuous treatment device for metal ore flotation wastewater, including a sedimentation tank 1 and a fine washing tank 2 arranged on one side of the sedimentation tank 1. The sedimentation tank 1 and the fine washing tank 2 are connected by a circulation pipe 3. The sedimentation tank 1 adjusts the pH value of the flotation wastewater to precipitate heavy metal ions at the bottom of the tank. After the sedimentation tank 1 reduces the heavy metal ions by a neutralization precipitation method, the low-concentration heavy metal ion flotation wastewater flows into the fine washing tank 2. Iron salt is added to the low-concentration heavy metal ion flotation wastewater in the fine washing tank 2, and ferrite powder is prepared from the wastewater by a co-precipitation method.

[0021] The sedimentation tank 1 is provided with a telescopic baffle 4 below the flow pipe 3. When the baffle 4 is extended, it forms a new bottom plate of the sedimentation tank 1. The baffle 4 and the bottom of the sedimentation tank 1 form a sludge settling area.

[0022] Specifically, injection pipes 15 are provided around the bottom of the sedimentation tank 1, and other secondary treatment materials are added into the sludge settling area through the injection pipes 15 to promote sedimentation and reduce the toxicity of the sludge. This part will not be described in detail in this embodiment.

[0023] The partition component 5 is provided with a sewage extraction pipe 8 on the side of the sludge settling area, and the sewage extraction pipe 8 is used to extract the sludge in the sludge settling area.

[0024] The baffle plate 4 serves as a temporary bottom plate and the sedimentation tank 1 above it serves as a temporary water collection tank to receive new flotation wastewater.

[0025] In this embodiment, both sedimentation tank 1 and fine washing tank 2 use chemical precipitation to remove heavy metals. Sedimentation tank 1 specifically uses a neutralization precipitation method to remove heavy metal ions. This is achieved by adding an alkaline agent to adjust the pH of the wastewater, causing the heavy metal ions to precipitate as hydroxides or carbonates. This method is simple to operate, but it produces a large amount of sludge.

[0026] The fine wash tank uses the ferrite method to remove heavy metal ions from wastewater. This involves adding iron salts to wastewater containing heavy metal ions and using co-precipitation to produce ferrite powder. This method can remove multiple heavy metal ions simultaneously, produces minimal sediment, is chemically stable, and is less likely to cause secondary pollution.

[0027] A telescopic baffle 4 is provided at the lower end of the sedimentation tank 1 . When the sludge at the bottom of the sedimentation tank 1 is to be settled, the baffle 4 is extended to form a sludge settling area at the bottom of the sedimentation tank 1 .

[0028] The sedimentation tank 1 above the baffle 4 can be used as a neutralization sedimentation tank again, and can carry out continuous sedimentation work. Specifically, it should be noted that the circulation pipe 3 is specifically arranged at the upper end of the baffle 4, and the position of the circulation pipe 3 is adjusted according to the weighing weight of the baffle 4, so that the baffle 4 serves as the top cover of the sludge settling area on the one hand, and as the bottom plate of the new sedimentation tank on the other hand.

[0029] like Figure 3 As shown, in order to enable the baffle 4 to telescopically move, a partition assembly 5 is provided around the lower end of the sedimentation tank 1, a three-dimensional groove 51 is provided inside the partition assembly 5, and rectangular openings 52 connected to the three-dimensional groove 51 are provided around the sedimentation tank 1.

[0030] A movable plate 53 is provided inside each three-dimensional slot 51 of the partition assembly 5. The movable plates 53 distributed around the sedimentation tank 1 are driven out by the driving assembly to form the entire baffle 4. The baffle 4 and the bottom of the sedimentation tank 1 form a sludge settling area.

[0031] The three-dimensional slot 51 serves as a space for accommodating the inward retraction of the movable plate 53. During normal use, the movable plate 53 is retracted into the three-dimensional slot 51 under the drive of the driving assembly. At this time, the flotation wastewater in the sedimentation tank 1 produces a large amount of sludge through the neutralization sedimentation method. When the amount of sludge reaches a certain height, it is necessary to push the movable plate 53 outward until all the movable plates 53 are fully extended to form a baffle 4.

[0032] At this time, the baffle plate 4 and the bottom of the sedimentation tank 1 form a sludge settling area for accommodating sludge. At this time, the sludge can be biologically treated in the sludge settling area to convert organic matter in the sludge into harmless substances.

[0033] The baffle 4 and the sedimentation tank above it form a new sedimentation space. After the flotation wastewater is poured into the new sedimentation space, sludge is formed on the upper surface of the baffle 4 by the neutralization sedimentation method, which does not hinder the normal wastewater treatment work. Since the circulation pipe 3 is above the baffle 4, the wastewater treatment work can be carried out normally above the baffle 4. After the neutralization sedimentation method, sludge is generated on the surface of the baffle 4, and the treated water flows to the fine washing tank 2 through the circulation pipe 3.

[0034] After the sludge in the sludge settling area is discharged, the driving assembly is used to retract the movable plate 53 into the three-dimensional slot 51. At the same time, during the retracting movement, the sludge on the movable plate 53 is pushed back to the bottom of the sedimentation tank 1, and then continues to be neutralized and precipitated at the bottom of the sedimentation tank 1. At this time, the sedimentation tank 1 resumes its operation as an initial state until the amount of sludge reaches a certain height. It is then necessary to push the movable plate 53 outward until all the movable plates 53 are fully extended to form a baffle 4. The above work is repeated to achieve the removal of heavy metals from flotation wastewater and the recycling of the generated sludge harmlessly.

[0035] like Figures 4 to 6 As shown, in order to ensure that all movable plates 53 are locked with each other to form a relatively sealed baffle 4, the two sides of two mutually parallel movable plates 53 are close to the other two parallel sides of the sedimentation tank 1, and the two sides of the movable plates 53 are respectively provided with inner grooves 6.

[0036] Guide bars 7 are provided on the other two parallel sides of the sedimentation tank 1 , and the movable plate 53 is limited in movement by the mutual locking action of the inner groove 6 and the guide bars 7 when it is extended or retracted.

[0037] The front sides of two mutually parallel moving plates 53 are also provided with inner grooves 6 . After the two mutually parallel moving plates 53 are extended, the other two mutually parallel moving plates 53 move along the space formed by the two moving plates 53 .

[0038] The other two parallel movable plates 53 are respectively provided with extended ridges on both sides. After the two parallel movable plates 53 are fully extended, the parallel movable plates 53 are mutually limited in movement by the locking action of the extended ridges and the inner grooves 6. When the four movable plates are fully extended, they are locked with each other to form a sealed baffle 4.

[0039] In this embodiment, two of the mutually parallel movable plates 53 are named plate No. 1 and plate No. 2, and the other two mutually parallel movable plates 53 are named plate No. 3 and plate No. 4. Inner grooves 6 are set on the sides of plate No. 1 and plate No. 2, and guide bars 7 are set on the parallel sides of the sedimentation tank 1 parallel to them. When plate No. 1 and plate No. 2 move, they can maintain a sealed state through the mutual locking action of the inner grooves 6 and the guide bars 7.

[0040] The front sides of plates No. 1 and No. 2 are also provided with inner grooves 6. After plates No. 1 and No. 2 are completely moved outward, plates No. 3 and No. 4 are pushed outward at the same time. The extended ridges of plates No. 3 and No. 4 are locked with the inner grooves 6, so plates No. 3 and No. 4 can maintain a sealed state with plates No. 1 and No. 2.

[0041] In order to further ensure the sealing state of plates No. 1 and No. 2, plates No. 3 and No. 4 when they are fully moved outward and fully retracted, a sealing strip 9 is provided inside the three-dimensional groove 51 near the rectangular opening 52. The sealing strip 9 is used to completely seal the three-dimensional groove 51 to prevent water from flowing into the three-dimensional groove 51.

[0042] In addition, if Figure 3As shown, after the movable plate 53 serves as the new bottom plate of the sedimentation tank 1, heavy metals are removed under the chemical action of the neutralization sedimentation method, which produces some sludge. When the organic matter in the sludge is converted into harmless substances through the biological treatment method in the sludge sedimentation area, the movable plate 53 will retract toward the partition component 5. In order to remove the sludge on the movable plate 53 during the retraction, the side of the sedimentation tank 1 is provided with a pusher inclined plate 10 at the upper and lower ends of the rectangular opening 52. The pusher inclined plate 10 is used to push away the sludge on the movable plate 53 when the movable plate 53 retracts.

[0043] Furthermore, in this embodiment, the movable plate 53 can extend outward toward the sedimentation tank 1 and can retract inward toward the partition assembly 5, so the driving assembly in this embodiment can drive the movable plate 53 to move inward and outward. The driving assembly is specifically a driving component that pushes the plate to move linearly. Therefore, the driving assembly in this embodiment is specifically a servo motor arranged above and below the movable plate 53, and the forward and reverse rotation of the servo motor is used to drive the movable plate 53 to move linearly inward and outward.

[0044] As another preferred embodiment of this embodiment, Figure 3 、 Figure 7 and Figure 8 As shown, in order to improve the weighing capacity of the entire baffle plate 4, at least one automatic reset support assembly 11 is provided at the lower end of each movable plate 53. The automatic reset support assembly 11 rotates close to the movable plate 53 when the movable plate 53 retracts to accommodate the automatic reset support assembly 11. The automatic reset support assembly 11 rotates to be perpendicular to the movable plate 53 when the movable plate 53 extends. At this time, the automatic reset support assembly 11 is used to support the movable plate 53 to bear the weight of the water.

[0045] The automatic reset support assembly 11 includes a fixed pile 111 mounted on the movable plate 53 , and a rotating plate 112 movably mounted on the fixed pile 111 , and a support leg 113 is mounted on the lower end of the rotating plate 112 .

[0046] A straight rod 114 is installed between the two side plates of the fixed pile 111, and the two side plates of the rotating plate 112 are movably installed on the straight rod 114 and can rotate around the straight rod 114. A return spring 115 is installed on the straight rod 114. The return spring 115 drives the supporting leg 113 to rotate to a vertical state when the moving plate 53 is extended.

[0047] The side surfaces of the support legs 113 are flush with the side surfaces of the rotating plate 112 . When the moving plate 53 retracts, the support legs 113 rotate along with the rotating plate 112 to be close to the moving plate 53 .

[0048] The partition assembly 5 is provided with an open slot 12 below the three-dimensional slot 51 , which corresponds to the installation position of the automatic reset support assembly 11 .

[0049] The specific implementation method of the automatic reset support assembly 11 to support the movable plate 53 is as follows: When the movable plate 53 is driven by the driving assembly to move toward the partition assembly 5, and the support leg 113 moves to the position of the open slot 12, the rotating plate 112 rotates around the straight rod 114, and the support leg 113 rotates to the lower surface close to the movable plate 53 under the resistance of the open slot 12. At this time, the return spring 115 is in a stretched state, and the support leg 113 and the movable plate 53 are retracted into the interior of the partition assembly 5.

[0050] When the movable plate 53 is driven by the driving assembly to move toward the sedimentation tank 1, the support leg 113 is automatically reset under the drive of the reset spring 115, and the reset spring 115 drives the rotating plate 112 to rotate in the opposite direction around the straight rod 114 until it rotates to be perpendicular to the movable plate 53. At this time, the lower end of the support leg 113 is against the bottom of the sedimentation tank 1. At this time, the movable plate 53 maintains a stable weighing capacity under the support of the support leg 113.

[0051] In order to ensure that wastewater does not flow into the slot, on the one hand, a widened plate can be provided at the lower end of the support leg 113. The size of the widened plate is larger than the cross-sectional size of the open slot 12. Therefore, the widened plate at the lower end of the support leg 113 can seal and block the slot opening of the open slot 12. Therefore, when the movable plate 53 and the support leg 113 are retracted into the three-dimensional slot 51 and the open slot 12 inside the partition component 5, the slot opening can be completely blocked to prevent wastewater from entering the slot.

[0052] On the other hand, an elastic sealing plate 13 capable of moving along the cavity of the open groove 12 is provided inside the open groove 12. The inner side surface of the elastic sealing plate 13 is installed at the inner end of the open groove 12 through a compression spring 14. The elastic sealing plate 13 closes the notch of the open groove 12 when the moving plate 53 is extended. When the moving plate 53 is retracted, the elastic sealing plate 13 is compressed by the support leg 113 and retracts into the open groove 12.

[0053] This embodiment uses two chemical precipitation methods to remove heavy metal ions in flotation wastewater, and the neutralization precipitation method will produce a large amount of sludge. In order to reduce the secondary pollution caused by sludge transfer, this embodiment specifically sets a retractable and movable baffle at the bottom of the neutralization sedimentation tank. The baffle can form a sludge sedimentation area at the bottom of the sedimentation tank. The sludge is settled and detoxified before being transferred to reduce the problem of secondary pollution. The baffle serves as a new bottom plate to ensure that the sedimentation tank can continue to treat wastewater. The sludge settled on the baffle can be transferred to the bottom of the sedimentation tank when the baffle is retracted, ensuring a continuous cycle of sedimentation and sludge treatment.

[0054] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A continuous treatment device for metal ore flotation wastewater, characterized in that: include: A sedimentation tank (1), wherein the bottom of the sedimentation tank (1) is tidally closed by providing a telescopic baffle (4) to simultaneously neutralize and precipitate wastewater. When the baffle (4) closes the bottom of the sedimentation tank (1), the baffle closes the bottom of the sedimentation tank (1) to form a sludge settling area. The sludge settled in the sludge settling area is directly discharged after being treated. At this time, the baffle (4) serves as a temporary bottom plate to continue to receive new flotation wastewater, and the baffle (4) is closed and scraped into the sludge settling area by friction with the side wall of the sedimentation tank (1); A fine washing tank (2) is arranged on one side of the sedimentation tank (1), and the sedimentation tank (1) and the fine washing tank (2) are connected via a flow pipe (3); The sedimentation tank (1) adjusts the pH value of the flotation wastewater to neutralize and precipitate heavy metals at the bottom of the tank to reduce the heavy metal ion content. The flotation wastewater after neutralization and precipitation flows into the fine washing tank (2) to produce ferrite through the co-precipitation method of iron salts.

2. The continuous treatment device for metal ore flotation wastewater according to claim 1, characterized in that: When the flotation wastewater is subjected to acid-base neutralization treatment in the sedimentation tank (1), the baffle plate (4) is closed. When the flotation wastewater is subjected to acid-base neutralization treatment and needs to be left to settle, the baffle plate (4) is opened to allow the settled wastewater to enter the sludge settling area for natural settling. In the subsequent continuous treatment process, the baffle (4) is tidally opened according to the cycle of the acid-base neutralization treatment to complete the natural transfer of the flotation wastewater and the natural sedimentation of the sludge. After the natural sedimentation is completed, the flotation wastewater enters the fine washing tank (2).

3. The continuous treatment device for metal ore flotation wastewater according to claim 2, characterized in that: The bottom of the sedimentation tank (1) is provided with a raised layer so that the bottom surface of the sedimentation tank (1) is higher than the fine washing tank (2); A partition assembly (5) is provided on the side of the sedimentation tank (1), a three-dimensional slot (51) is provided on the partition assembly (5), and rectangular openings (52) communicating with the three-dimensional slot (51) are respectively provided on the four sides of the sedimentation tank (1); A movable plate (53) is provided inside each three-dimensional slot (51) of the partition assembly (5). The movable plates (53) distributed around the sedimentation tank (1) form baffles (4) when the driven assembly drives the sedimentation tank (1) to close the sedimentation tank (1).

4. The continuous treatment device for metal ore flotation wastewater according to claim 3, characterized in that: An inner groove (6) is provided on the outer side of the movable plate (53), and a guide bar (7) is provided on the side wall of the sedimentation tank (1). When the movable plate (53) is extended or retracted, it is limited by the mutual engagement of the inner groove (6) and the guide bar (7); On the movable plates (53) that move toward each other, an extended ridge is provided on the side of one of the movable plates (53), and an inner groove (6) is provided on the side of the other movable plate (53). When the movable plates (53) are fully extended, they are locked with each other to form a sealed baffle (4).

5. The continuous treatment device for metal ore flotation wastewater according to claim 3, characterized in that: A sealing strip (9) is provided inside the three-dimensional slot (51) at a position close to the rectangular opening (52), and the sealing strip (9) is used to completely seal the three-dimensional slot (51) to prevent water from flowing into the three-dimensional slot (51); The side surface of the sedimentation tank (1) is provided with pusher inclined plates (10) at the upper and lower ends of the rectangular opening (52), respectively. The pusher inclined plates (10) are used to push away the sludge on the movable plate (53) when the movable plate (53) moves inwardly.

6. The continuous treatment device for metal ore flotation wastewater according to claim 2, characterized in that: At least one automatic reset support assembly (11) is provided at the lower end of each movable plate (53), and the automatic reset support assembly (11) rotates to be close to the movable plate (53) when the movable plate (53) is retracted so as to store the automatic reset support assembly (11), and the automatic reset support assembly (11) rotates to be perpendicular to the movable plate (53) when the movable plate (53) is extended, and at this time, the automatic reset support assembly (11) is used to support the movable plate (53) to bear the weight of the water body; The automatic reset support assembly (11) comprises a fixed pile (111) mounted on the movable plate (53), and a rotating plate (112) movably mounted on the fixed pile (111), and a supporting leg (113) is mounted on the lower end of the rotating plate (112); A straight rod (114) is installed between the two side plates of the fixed pile (111), and the two side plates of the rotating plate (112) are movably installed on the straight rod (114) and can rotate around the straight rod (114). A return spring (115) is installed on the straight rod (114), and the return spring (115) drives the supporting leg (113) to rotate to a vertical state when the movable plate (53) is extended.

7. The continuous treatment device for metal ore flotation wastewater according to claim 6, characterized in that: The side surface of the support leg (113) is flush with the side surface of the rotating plate (112), and the support leg (113) rotates along with the rotating plate (112) to approach the moving plate (53) when the moving plate (53) retracts.

8. The continuous treatment device for metal ore flotation wastewater according to claim 6, characterized in that: The partition assembly (5) is provided with an open slot (12) below the three-dimensional slot (51) corresponding to the installation position of the automatic reset support assembly (11); A widening plate may be provided at the lower end of the support leg (113), wherein the size of the widening plate is larger than the cross-sectional size of the open slot (12); An elastic sealing plate (13) is provided inside the open groove (12) and is movable along the cavity of the open groove (12). The inner side surface of the elastic sealing plate (13) is mounted on the inner end of the open groove (12) via a compression spring (14). When the movable plate (53) is extended, the elastic sealing plate (13) closes the notch of the open groove (12). When the movable plate (53) is retracted, the elastic sealing plate (13) is compressed by the supporting leg (113) and retracts into the open groove (12).

9. The continuous treatment device for metal ore flotation wastewater according to claim 2, characterized in that: Input pipes (15) are respectively provided around the bottom of the sedimentation tank (1).

10. The continuous treatment device for metal ore flotation wastewater according to claim 9, characterized in that: The partition assembly (5) is provided with a sewage extraction pipe (8) on the side of the sludge settling area.

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