Flotation machine beneficiation sewage treatment device

Abstract

The invention relates to the technical field of flotation treatment, and particularly discloses a flotation machine beneficiation sewage treatment device which comprises a reaction tank; the stirring assembly comprises a stirring shaft rotationally connected with the reaction tank, a plurality of paddles distributed on the side wall of the stirring shaft and a driving mechanism for driving the stirring shaft to rotate, the interiors of the stirring shaft and the stirring paddles are communicated with an oxidizing agent channel, and the stirring paddles are provided with a plurality of liquid injection ports; the liquid supply assembly comprises a storage tank capable of supplying an oxidizing agent to the oxidizing agent channel and a control mechanism for controlling the opening or closing of the liquid injection port, and the supply point positions of the oxidizing agent are arranged on all the stirring blades, so that the supply uniformity of the oxidizing agent in the circumferential direction of the reaction tank can be improved; and the uniformity of oxidant supply in the height direction of the reaction tank can be improved, so that the oxidant is more uniformly distributed in the reaction tank, local peroxidation or insufficient oxidation is avoided, the stability of beneficiation sewage treatment is improved, and the treatment precision is improved.

Description

Technical Field

[0001] This application relates to the field of flotation treatment technology, and specifically discloses a flotation machine wastewater treatment device. Background Technology

[0002] In the flotation process of ore, various flotation reagents, such as collectors, frothers, and modifiers, are often used to effectively separate the target minerals. After the flotation separation is completed, some of these reagents remain in the generated mineral processing wastewater. Subsequent treatment requires the degradation or removal of these residual organic reagents to achieve clean production and compliant emissions from the mineral processing plant.

[0003] Currently, advanced oxidation technology is one of the commonly used treatment methods for mineral processing wastewater containing recalcitrant organic matter. For example, oxidants such as hydrogen peroxide are used under specific conditions to generate highly oxidizing hydroxyl radicals, thereby non-selectively oxidizing and decomposing organic pollutants in the wastewater. A typical oxidation treatment process usually involves pumping the collected wastewater into a large mixing reactor, then adding a measured amount of oxidizing agent such as hydrogen peroxide to the reactor, and using a stirring device to mix the agent with the wastewater to carry out the oxidation reaction.

[0004] However, in current operations, oxidizing agents are typically introduced into the mixing reactor via single-point direct addition or intermittent feeding at a limited number of points. Due to the large volume of the reactor and the significant difference between the wastewater and reagent volumes, the local concentration at the initial addition point is extremely high, while the concentration in areas far from the addition point is very low. Even with a stirrer, limitations in fluid dynamics, particularly in areas where mixing dead zones or poor circulation easily exist along the height of the tank, make it difficult to achieve rapid and uniform dispersion of the oxidizing agent within the three-dimensional space of the mineral processing wastewater, especially along the height of the tank.

[0005] In areas with excessively high reagent concentrations, over-oxidation may occur, wasting expensive oxidizing agents and potentially generating unnecessary side reactions or intermediate products. Conversely, in areas with insufficient reagent concentrations, especially in the lower or corner areas of the tank, the oxidation reaction is incomplete, and residual reagents are not effectively degraded, leading to unstable overall treatment performance and reduced treatment precision. Even with intermittent multi-point oxidant addition, it is difficult to ensure uniform oxidant distribution along the height of the tank. Therefore, this invention provides a flotation machine wastewater treatment device to address these problems. Summary of the Invention

[0006] The purpose of this invention is to solve the problem in traditional mineral processing wastewater oxidation treatment where oxidants are added at single or multiple points, resulting in uneven distribution of the oxidant along the height of the tank, which can easily lead to local over-oxidation or insufficient oxidation.

[0007] To achieve the above objectives, the basic solution of the present invention provides a flotation machine wastewater treatment device, comprising: reaction vessel; The stirring assembly includes a stirring shaft rotatably connected to the reaction vessel, several blades distributed on the side wall of the stirring shaft, and a drive mechanism for driving the stirring shaft to rotate. The stirring shaft and the stirring blades are internally connected to an oxidant channel, and the stirring blades are provided with several liquid injection ports. The liquid supply assembly includes a storage tank for supplying oxidant to the oxidant channel and a control mechanism for controlling the opening or closing of the liquid injection port.

[0008] The principle and effect of this basic scheme are as follows: Compared to the traditional multi-point arrangement, this invention arranges the oxidant supply points on each stirring blade, which not only improves the uniformity of oxidant supply along the circumference of the reaction tank, but also improves the uniformity of oxidant supply along the height of the reaction tank. This makes the oxidant more evenly distributed in the reaction tank, avoids local over-oxidation or insufficient oxidation, increases the stability of mineral processing wastewater treatment, and improves treatment accuracy.

[0009] Furthermore, while driving the stirring shaft to rotate, the drive mechanism also drives the stirring shaft to move vertically reciprocating within the reaction tank. This method allows the stirring shaft and impeller to perform high-level mixing and stirring of the mineral processing wastewater within the reaction tank, further improving the uniformity of the distribution of the wastewater and oxidant. This ensures that residual reagents in the wastewater fully contact and react with the oxidant, further preventing problems such as localized over-oxidation or incomplete oxidation.

[0010] Furthermore, the drive mechanism includes: Power components; The rotating shaft is connected to the power component via a transmission. A drive shaft is splinedly connected to the rotating shaft. One end of the drive shaft is connected to the stirring shaft. The drive shaft is provided with a reciprocating thread groove, and the reaction vessel is provided with a nut seat that mates with the reciprocating thread groove.

[0011] The rotating shaft is driven by a power component, which in turn drives the transmission shaft to rotate synchronously. The reciprocating thread groove on the transmission shaft and the nut seat work together to make the transmission shaft rotate and also perform vertical reciprocating motion. This, in turn, drives the stirring shaft and stirring blades to rotate and perform vertical reciprocating motion, thereby improving the uniformity of the distribution of mineral processing wastewater and oxidant.

[0012] Furthermore, the liquid supply assembly also includes a liquid guiding sleeve. The top of the drive shaft extends into the liquid guiding sleeve and is equipped with a sealing plug that slides and seals with the inner wall of the liquid guiding sleeve. The storage tank and the oxidant channel are both connected to the liquid guiding sleeve. This arrangement allows the drive shaft to drive the sealing plug to slide back and forth within the liquid guiding sleeve, creating a positive or negative pressure environment that draws the oxidant from the storage tank. This automatically and conveniently introduces the oxidant into the oxidant channel, facilitating the introduction of the oxidant into the reaction vessel from various injection ports.

[0013] Furthermore, the control mechanism includes a sliding rod that is axially slidably connected to the drive shaft and the stirring shaft, and pressure plates respectively disposed on the side wall of the sliding rod. The pressure plates are slidably connected to each stirring blade, and the pressure plates are provided with plungers that can connect or disconnect each liquid injection port. The control mechanism also includes a limiting member that can push against the sliding rod and a sliding rod return spring that drives the sliding rod to reset.

[0014] This configuration allows the drive shaft to move vertically while simultaneously driving the sliding rod to move vertically in sync. This enables the plunger to engage with the injection port and the limiting component to engage with the sliding rod. Specifically, when the limiting component exerts a pushing force on the sliding rod, the plunger opens all the injection ports. Conversely, when the limiting component does not exert a pushing force on the sliding rod, the plunger blocks all the injection ports, thus allowing for convenient control of the opening and closing of the injection ports.

[0015] Furthermore, the stirring blade is equipped with a sealing sleeve located at the injection port. The end of the plunger is slidably and sealingly connected to the inner wall of the sealing sleeve. The side wall of the plunger is provided with an outlet groove, the length of which is greater than the width of the sealing sleeve. In this way, when the sliding rod is not compressed, the end of the plunger contacts the inner wall of the sealing sleeve to block the injection port. When the sliding rod is compressed, the end of the plunger extends out of the sealing groove, and the outlet groove connects the injection port with the inside of the reaction vessel, allowing the oxidant stored in the stirring blade to be forced into the reaction vessel.

[0016] Furthermore, the limiting member includes a limiting plate, a magnet disposed on the limiting plate, an electromagnet that can be attracted to the magnet, and a limiting plate reset spring that drives the limiting plate to reset. The limiting plate is provided with a through groove through which the sliding rod can pass. The electromagnet is electrically connected to a power source and is intermittently energized and de-energized.

[0017] By energizing and de-energizing the electromagnet, the position of the limiting plate is controlled, so that the limiting plate directly contacts the sliding rod or the through groove on the limiting plate contacts the sliding rod, thereby controlling whether the limiting plate exerts a pushing effect on the sliding rod.

[0018] Furthermore, it also includes a purification component, which includes a gas collection pipe connected to the reaction vessel, a gas pump installed on the gas collection pipe, and a purification box connected to the gas pump. The purification chamber is equipped with a packing tray, which is filled with a packing material that can adsorb carbon dioxide. A pressure sensing mechanism is provided between the packing disc and the purification box. The feedback value of the pressure sensing mechanism is used to intermittently control the electromagnet to be energized and de-energized.

[0019] This setup not only allows for the collection and treatment of carbon dioxide generated during the reaction process to reduce emissions, but also enables the determination of the amount of oxidant consumed in the reaction based on the amount of collected carbon dioxide, thereby controlling and adjusting the supply of oxidant.

[0020] Furthermore, the pressure sensing mechanism includes a pressure sensing element disposed between the packing disc and the purification chamber, and a controller that is signal-connected to the pressure sensing element; Alternatively, the pressure sensing mechanism may include a telescopic rod disposed between the packing disc and the purification chamber, a detection spring sleeved on the telescopic rod, and a plurality of contacts that enable the electromagnet to be electrically connected to the power supply between the packing disc and the purification chamber.

[0021] Pressure sensor plates offer higher detection accuracy and are suitable for small reaction vessels with low carbon dioxide emissions. By detecting the strain of the pressure sensor plate and the overall weight change of the packing disc, the amount of carbon dioxide collected can be determined, thereby determining the amount of oxidant consumed in the reaction and controlling the supply of oxidant. While detection springs have lower detection accuracy, they are suitable for large reaction vessels with high carbon dioxide emissions and can more conveniently and directly control the energization and de-energization of electromagnets, providing stable control at a lower cost.

[0022] Based on the same inventive concept, this invention provides a method for treating mineral processing wastewater from a flotation machine, comprising oxidizing the flotation wastewater using the aforementioned wastewater treatment equipment, the steps of which are as follows: Step S1: The wastewater generated after flotation is fed into the reaction tank; Step S2: The control mechanism intermittently controls the opening of each injection port to intermittently supply oxidant into the reaction tank, and the oxidizer oxidizes the residual reagent in the wastewater in the reaction tank. Step S3: After the reaction is complete, the oxidized wastewater is discharged from the reaction tank.

[0023] In the process of mineral processing wastewater treatment, this method arranges the oxidant supply points on each agitator blade, which not only improves the uniformity of oxidant supply along the circumference of the reaction tank, but also improves the uniformity of oxidant supply along the height of the reaction tank. This makes the oxidant more evenly distributed in the reaction tank, avoids local over-oxidation or insufficient oxidation, increases the stability of mineral processing wastewater treatment, and improves the treatment accuracy. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a flotation machine wastewater treatment device according to an embodiment of this application is shown; Figure 2 This paper shows a schematic diagram of the interior of a reaction tank in a flotation machine wastewater treatment device according to an embodiment of this application. Figure 3 This illustration shows a schematic diagram of the interior of the liquid guiding sleeve in a flotation machine wastewater treatment device according to an embodiment of this application; Figure 4 This paper shows a schematic diagram of the drive shaft in a flotation machine wastewater treatment device according to an embodiment of this application; Figure 5 This paper shows a schematic diagram of the stirring shaft connection in a flotation machine wastewater treatment device according to an embodiment of this application. Figure 6 It shows Figure 5 Enlarged view of section A in the middle; Figure 7 This paper shows a schematic diagram of the interior of the purification tank in a flotation machine wastewater treatment device according to an embodiment of this application. Figure 8 It shows Figure 7 Enlarged view of section B. Detailed Implementation

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0027] The reference numerals in the accompanying drawings include: reaction vessel 1, motor 2, nut seat 3, liquid guide sleeve 4, limiting sleeve 5, storage tank 6, purification box 7, power supply 8, fan 9, gas pipe 10, condenser 11, annular pipe 12, stirring shaft 13, stirring blade 14, baffle plate 15, driving gear 16, driven gear 17, transmission shaft 18, top smooth section 1801, middle threaded groove section 1802, bottom external spline section 1803, sealing plug 19, sliding rod 20, right piston 21, left piston 22. 23. Limiting plate return spring, 24. Electromagnetic sleeve, 25. Limiting plate, 26. Through groove, 27. Oxidant flow hole, 28. Pressure plate, 29. Plunger, 30. Sealing sleeve, 31. Liquid outlet, 32. Sliding rod return spring, 33. Fixed pipe, 34. Sliding pipe, 35. Packing disc, 36. Fixed part, 37. Sliding part, 38. Detection spring, 39. First connecting plate, 40. Second connecting plate, 41. Third connecting plate, 42. First conductive sheet, 43. Second conductive sheet, 44. Third conductive sheet, 45. Moving contact, 46. Stationary contact.

[0028] A flotation machine wastewater treatment device, implementing, for example Figure 1 As shown: It includes a reaction tank 1 for containing mineral processing wastewater and oxidant for mixing and reacting, a stirring assembly for stirring the mixture in the reaction tank 1, a liquid supply assembly for supplying oxidant into the reaction tank 1, and a purification assembly for purifying the carbon dioxide produced in the reaction tank 1.

[0029] The reaction vessel 1 is installed and supported by multiple legs. The side wall of the reaction vessel 1 is provided with a feed pipe, and the bottom of the reaction vessel 1 is provided with a discharge pipe.

[0030] like Figure 2 As shown, the stirring assembly includes a stirring shaft 13 rotatably connected to the reaction tank 1, several blades distributed on the side wall of the stirring shaft 13, and a drive mechanism. The stirring shaft 13 and the stirring blades 14 are internally connected to an oxidant channel. Several injection ports are provided on the stirring blades 14 to allow oxidant to be injected into the reaction tank 1 from each stirring blade 14. This improves the uniformity of oxidant supply along the circumference of the reaction tank 1 and along the height of the reaction tank 1, resulting in a more uniform distribution of oxidant within the reaction tank 1. This avoids localized over-oxidation or incomplete oxidation, increases the stability of the mineral processing wastewater treatment, and improves the treatment accuracy. While driving the stirring shaft 13 to rotate, the driving mechanism also drives the stirring shaft 13 to move vertically back and forth within the reaction tank 1. Specifically, a partition 15 is provided inside the reaction tank 1, which divides the reaction tank 1 into a driving chamber and a reaction chamber. The driving mechanism includes a power component on the top cover of the reaction tank 1, a rotating shaft rotatably connected in the driving chamber, and a transmission shaft 18 splinedly connected to the rotating shaft. The power component is a motor 2, and the output end of the motor 2 extends into the driving chamber and is provided with a drive gear 16. The outer wall of the rotating shaft is provided with a driven gear 17 that meshes with the drive gear 16. The inner wall of the rotating shaft is provided with an inner spline groove. The outer wall of the transmission shaft 18 is provided with an outer spline that matches the inner spline groove, and the bottom of the transmission shaft 18 extends into the reaction chamber and is connected to the stirring shaft 13.

[0031] When the motor 2 drives the rotating shaft to rotate through the driving gear 16 and the driven gear 17, the rotating shaft drives the transmission shaft 18 to rotate through the cooperation between the inner spline groove and the outer spline, thereby driving the stirring shaft 13 and the stirring blade 14 to rotate.

[0032] like Figure 3 and Figure 4 As shown, the drive shaft 18 includes a top smooth section 1801, a middle threaded groove section 1802, and a bottom external spline section 1803. The middle threaded groove has two threaded grooves with the same pitch but opposite directions connected by a transition curve to form a closed reciprocating threaded groove. A nut seat 3 is provided at the top of the reaction vessel 1, and a ball bearing or slider adapted to the reciprocating threaded groove is fixed inside the nut seat 3. This allows the drive shaft 18 to perform vertical reciprocating motion while rotating, thereby driving the stirring shaft 13 and the stirring blade 14 to rotate and perform vertical reciprocating motion simultaneously.

[0033] The liquid supply assembly includes a storage tank 6 located at the top of the reaction vessel 1, a liquid guiding sleeve 4, and a control mechanism for controlling whether or not oxidant is injected. The top of the drive shaft 18 extends into the liquid guiding sleeve 4 and is equipped with a sealing plug 19 that slides and seals with the inner wall of the liquid guiding sleeve 4. The storage tank 6 and the liquid guiding sleeve 4 are directly connected through an oxidant pipeline, and a one-way valve is provided on the oxidant pipeline, so that the oxidant can only flow from the storage tank 6 to the liquid guiding sleeve 4. The drive shaft 18 drives the sealing plug 19 to slide back and forth in the liquid guiding sleeve 4, so that a positive or negative pressure environment is formed in the liquid guiding sleeve 4, which plays a role in drawing the oxidant in the storage tank 6, thereby automatically and conveniently introducing the oxidant into the liquid guiding sleeve 4.

[0034] like Figure 4 As shown, multiple oxidant flow holes 27 are provided between the top and bottom of the drive shaft 18, so that the oxidant in the liquid guiding sleeve 4 can flow through the oxidant flow holes 27 to the oxidant channel in the stirring shaft 13 and the stirring blade 14.

[0035] like Figure 3As shown, the control mechanism includes a sliding rod 20 that is vertically slidably connected to the drive shaft 18 and a limiting member that can push the sliding rod 20. A limiting sleeve 5 is connected to the top of the liquid guiding sleeve 4. The limiting member includes a limiting plate 25 that is laterally slidably connected to the limiting sleeve 5 and an electromagnetic sleeve 24 located at one end of the limiting sleeve 5. The limiting plate 25 is provided with a through groove 26 that allows the sliding rod 20 to pass through. The two ends of the limiting rod are respectively provided with a left piston 22 and a right piston 21. A cavity is formed between the left piston 22 and the right piston 21 that communicates with the liquid guiding sleeve 4 to facilitate the suction of the oxidant. A magnet is provided on the left piston 22, and an electromagnet is provided inside the electromagnetic sleeve 24. A limiting plate return spring 23 is provided between the left piston 22 and the left end of the limiting sleeve 5.

[0036] By energizing and de-energizing the electromagnet, and in conjunction with the resetting action of the limit plate return spring 23, the limit plate 25 can be in different positions, thereby allowing the limit plate 25 to directly contact the sliding rod 20 or allowing the through groove 26 on the limit plate 25 to contact the sliding rod 20, thus controlling whether the limit plate 25 exerts a pushing effect on the sliding rod 20.

[0037] like Figure 5 and Figure 6 As shown, the sliding rod 20 extends into the stirring shaft 13, and multiple pressure plates 28 are provided on the side wall of the sliding rod 20, which are vertically slidably connected to the stirring blade 14. A sliding rod return spring 32 is provided between the bottom inner wall of the stirring shaft 13 and the bottom of the sliding rod 20. A sealing sleeve 30 is provided in the stirring blade 14 at the liquid injection port. A plunger 29 corresponding to the position of the sealing sleeve 30 is provided on the pressure plate 28. The end of the plunger 29 is slidably sealed to the inner wall of the sealing sleeve 30. A liquid outlet 31 is provided on the side wall of the plunger 29. The length of the liquid outlet 31 is greater than the width of the sealing sleeve 30.

[0038] When the sliding rod 20 is not compressed, the end of the plunger 29 contacts the inner wall of the sealing sleeve 30 to block the injection port. When the sliding rod 20 is compressed, the end of the plunger 29 extends out of the sealing groove, and the liquid outlet 31 connects the injection port with the inside of the reaction vessel 1, and the oxidant stored in the stirring blade 14 is squeezed into the reaction vessel 1.

[0039] like Figure 1 As shown, the purification assembly includes a purification box 7 located at the top of the reaction tank 1, an air pump for drawing gas from the reaction tank 1, an annular pipe 12 arranged around the circumference of the reaction tank 1, multiple suction nozzles connected to the inside of the reaction tank 1 on the annular pipe 12, and the annular pipe 12 is directly connected to the air inlet of the air pump through an air pipe 10, and a condenser 11 is provided on the air pipe 10 to allow water vapor to condense and flow back.

[0040] like Figure 7As shown, the purification chamber 7 is equipped with a packing disc 35, which is filled with solid lithium hydroxide particles. The air outlet of the air pump is connected to the purification chamber 7 through a fixed pipe 33 and a sliding pipe 34. The surface of the purification chamber 7 is provided with multiple air outlets. The top of the sliding pipe 34 is slidably sealed to the inner wall of the fixed pipe 33. The bottom of the sliding pipe 34 is fixed to the packing frame through a clamp. Multiple air outlets are provided on the bottom side wall of the sliding pipe 34.

[0041] An air pump extracts the gas from reaction tank 1, causing the carbon dioxide gas generated in the reaction to react with lithium hydroxide particles, thereby purifying the carbon dioxide gas.

[0042] A pressure sensing mechanism is provided between the packing disc 35 and the purification chamber 7 to detect the amount of carbon dioxide being purified, thereby determining the amount of oxidant consumed in the reaction, and thus controlling and adjusting the supply of oxidant.

[0043] For small reaction vessels 1 with low carbon dioxide emissions, the pressure sensing mechanism uses a pressure sensing element and feeds back the detection results through a signal connection to a controller, thereby using the controller to control the electromagnet to be energized or de-energized.

[0044] For large reaction vessels 1 with high carbon dioxide emissions, such as Figure 7 and Figure 8 As shown, the pressure sensing mechanism includes a telescopic rod disposed between the packing disc 35 and the purification box 7, and a detection spring 38 sleeved on the telescopic rod. The telescopic rod includes a fixed part 36 and a sliding part 37. The fixed part 36 is connected to the inner bottom of the purification box 7, and the sliding part 37 is connected to the bottom of the packing disc 35. The bottom of the sliding part 37 is slidably connected to the fixed part 36.

[0045] The bottom of the purification box 7 is provided with a first connecting plate 39 and a second connecting plate 40, while the bottom of the packing frame is provided with a third connecting plate 41 that is slidably connected to the second connecting plate 40. The first connecting plate 39, the second connecting plate 40, and the third connecting plate 41 are respectively provided with a first conductive sheet 42, a second conductive sheet 43, and a third conductive sheet 44. The negative terminal of the power supply 8 is directly connected to the negative terminal of the electromagnet, the positive terminal of the power supply 8 is connected to the second conductive sheet 43, and the positive terminal of the electromagnet is connected to the first conductive sheet 42. The second conductive sheet 43 and the third conductive sheet 44 are slidably engaged and in an electrically conductive state. The third conductive sheet 44 is provided with a moving contact 45, while the first conductive sheet 42 is provided with multiple stationary contacts 46. When the moving contact 45 contacts the stationary contact 46, the third conductive sheet 44 and the first conductive sheet 42 are electrically connected, that is, the power supply 8 supplies power to the electromagnet. Conversely, the third conductive sheet 44 and the first conductive sheet 42 are disconnected, and the power supply 8 cuts off power to the electromagnet.

[0046] In this embodiment, the motor 2 drives the rotating shaft to rotate through the driving gear 16 and the driven gear 17, which in turn causes the transmission shaft 18 to rotate and reciprocate. During this process, the transmission shaft 18 drives the sealing plug 19 to slide back and forth in the liquid guiding sleeve 4, so that a positive or negative pressure environment is formed in the liquid guiding sleeve 4, which draws the oxidant in the storage tank 6 into the liquid guiding sleeve 4, and enters the interior of the stirring shaft 13 and the interior of the stirring blade 14 through the oxidant flow hole 27. Simultaneously, when the electromagnet is energized, the attraction of the electromagnet to the magnet causes the limiting plate 25 to move. The plate of the limiting plate 25 is directly above the sliding rod 20. When the sliding rod 20 moves up and down under the drive of the transmission shaft 18, it is squeezed by the limiting plate 25, causing the sliding rod 20 to squeeze the sliding rod return spring 32. The pressure plates 28 on the sliding rod 20 move downward within the stirring blade 14, and the end of the plunger 29 extends out of the sealing groove. The liquid outlet 31 connects the liquid inlet with the inside of the reaction tank 1, and the oxidant stored in the stirring blade 14 is squeezed into the reaction tank 1. Conversely, when the electromagnet is de-energized, the through groove 26 of the limiting plate 25 is directly above the sliding rod 20, and the sliding rod 20 moves up and down under the drive of the transmission shaft 18 without being squeezed by the limiting plate 25.

[0047] After the reaction has been going on for a period of time, the carbon dioxide generated by the reaction is adsorbed by the lithium hydroxide particles, and the weight of the packing disc 35 increases, causing the pressure sensor to change vertically or the detection spring 38 to be compressed. This, in turn, controls the electromagnet to be energized or de-energized by the controller, or controls the electromagnet to be energized or de-energized by whether the moving contact 45 and the stationary contact 46 are in contact.

[0048] Based on the same inventive concept, another embodiment provides a method for treating flotation wastewater, including oxidizing the flotation wastewater using the aforementioned flotation wastewater treatment device, the steps of which are as follows: Step S1: The wastewater generated after flotation is fed into the reaction tank 1 through the feed pipe under the drive of the wastewater pump; In step S2, the mineral processing wastewater reacts with the oxidant in the reaction tank 1. During this process, the stirring blade 14 is rotated and reciprocated vertically by the drive mechanism; the oxidant is intermittently supplied to the reaction tank 1 by the control mechanism; and the carbon dioxide gas generated by the reaction is absorbed and measured by the purification component. Step S3: Sampling and testing until the reagent in the mineral processing wastewater is below the required value, then the oxidation treatment is considered complete, and the oxidized wastewater is discharged from the reaction tank.

[0049] In the treatment of mineral processing wastewater, the oxidant supply points are arranged on each stirring blade 14. This not only improves the uniformity of oxidant supply along the circumference of the reaction tank 1, but also improves the uniformity of oxidant supply along the height of the reaction tank 1. This makes the oxidant more evenly distributed in the reaction tank 1, avoids local over-oxidation or insufficient oxidation, increases the stability of mineral processing wastewater treatment, and improves the treatment accuracy.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A flotation cell for processing of ore slurry, characterized in that The application relates to a flotation machine for treating flotation wastewater, which comprises the following components: a reaction tank; a stirring assembly, which comprises a stirring shaft connected with the reaction tank, a plurality of stirring blades distributed on the side wall of the stirring shaft and a driving mechanism for driving the stirring shaft to rotate, wherein the stirring shaft and the stirring blades are internally communicated with an oxidant channel, and a plurality of liquid injection ports are arranged on the stirring blades; a liquid supply assembly, which comprises a storage tank for supplying the oxidant channel with oxidants and a control mechanism for controlling the opening and closing of the liquid injection ports.

2. A flotation cell according to claim 1, characterised in that The driving mechanism drives the stirring shaft to rotate and vertically reciprocate in the reaction tank.

3. A flotation cell according to claim 2, characterised in that The driving mechanism comprises: a power component; a rotating shaft connected with the power component; a transmission shaft connected with the rotating shaft through a spline, one end of the transmission shaft being connected with the stirring shaft, a reciprocating thread groove being arranged on the transmission shaft, and a nut seat matched with the reciprocating thread groove being arranged on the reaction tank.

4. A flotation cell according to claim 3, characterised in that The liquid supply assembly further comprises a liquid guide sleeve, the top of the transmission shaft extending into the liquid guide sleeve and being provided with a sealing plug in sliding sealing connection with the inner wall of the liquid guide sleeve, and the storage tank and the oxidant channel being communicated with the liquid guide sleeve.

5. A sewage treatment tank according to claim 3, wherein The control mechanism comprises a sliding rod in axial sliding connection with the transmission shaft and the stirring shaft, pressing plates arranged on the side wall of the sliding rod, the pressing plates being in sliding connection with the stirring blades respectively, and plungers arranged on the pressing plates and capable of connecting or disconnecting the liquid injection ports. The control mechanism further comprises a limiting component capable of pushing the sliding rod and a sliding rod reset spring for driving the sliding rod to reset.

6. A flotation cell according to claim 5, characterised in that A sealing sleeve is arranged in the stirring blade at the liquid injection port, the end of the plunger is in sliding sealing connection with the inner wall of the sealing sleeve, and a liquid outlet groove is arranged on the side wall of the plunger, the length of the liquid outlet groove being greater than the width of the sealing sleeve.

7. A flotation cell according to claim 5 or 6, c h a r a c t e r i z e d in that The limiting component comprises a limiting plate, a magnet arranged on the limiting plate, an electromagnet capable of being attracted to the magnet and a limiting plate reset spring for driving the limiting plate to reset, and a through groove capable of allowing the sliding rod to pass through is arranged on the limiting plate. The electromagnet is electrically connected with a power supply and is intermittently powered on and powered off.

8. A flotation cell according to claim 7, characterised in that The flotation machine further comprises a purification assembly, which comprises a gas collecting pipe communicated with the reaction tank, a gas pump arranged on the gas collecting pipe and a purification tank communicated with the gas pump. A filler tray is arranged in the purification tank, and filler substances capable of adsorbing carbon dioxide are filled in the filler tray. A pressure sensing mechanism is arranged between the filler tray and the purification tank, and the feedback value of the pressure sensing mechanism is used to intermittently control the power-on and power-off of the electromagnet.

9. A flotation cell according to claim 8, characterised in that The pressure sensing mechanism comprises a pressure sensing sheet arranged between the filler tray and the purification tank and a controller in signal connection with the pressure sensing sheet. Alternatively, the pressure sensing mechanism comprises an extension rod arranged between the filler tray and the purification tank and a detection spring sleeved on the extension rod, and a plurality of contacts capable of electrically connecting the electromagnet with the power supply are arranged between the filler tray and the purification tank.

10. A method for treating wastewater from a flotation plant, characterized in that, The flotation machine is used for oxidizing and treating flotation wastewater, and the treatment steps are as follows: Step S1: the flotation wastewater generated after flotation is introduced into the reaction tank. Step S2, the control mechanism intermittently controls the opening of each liquid injection port to intermittently supply the oxidant into the reaction tank, and the oxidizer oxidizes the residual medicament in the sewage in the reaction tank; Step S3, after the reaction is completed, the sewage after the oxidation treatment is discharged from the reaction tank.

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