Water pollution treatment equipment and copper sulfide ore cleaning flotation process without lime

Abstract

The application provides a water pollution treatment equipment and a lime-free clean flotation process of copper sulfide ore. The application relates to the field of water pollution treatment, and the water pollution treatment equipment comprises a base. The water pollution treatment equipment provided by the application can realize efficient decomposition of residual hydrogen peroxide through calcium gluconate catalytic oxidation in a reaction tank, avoid interference of the oxidant on subsequent treatment, guarantee stability of the treatment system, form a three-dimensional circulating flow through upturning of a lower impeller and pressing of an upper impeller in an adjusting tank, make sodium hydroxide rapidly and uniformly diffuse in wastewater, realize efficient pH adjustment of the whole tank without dead zones, greatly improve utilization rate of reagents and reaction efficiency, realize coagulation reaction of PAM and PAC through a reagent adding pipe, make fine suspended particles and colloidal substances highly destabilize and form large alunite flowers, and circulate clear liquid after solid-liquid separation in an inclined plate sedimentation tank back to production, recycle treated wastewater, reduce environmental pollution and protect the environment, and realize double benefits of water pollution treatment and resource recycling.

Description

Technical Field

[0001] This invention relates to the field of water pollution treatment, and more particularly to a water pollution treatment device and a lime-free clean flotation process for copper sulfide ore. Background Technology

[0002] In the flotation process of copper sulfide ore in mineral resources, lime has always been used as an inhibitor and pH adjuster. This traditional process can achieve the flotation of copper, but the process generates a large amount of wastewater that is directly discharged, causing water pollution. With increasingly stringent environmental regulations on wastewater discharge standards and higher requirements for clean production technologies, the development of a lime-free clean flotation process that can replace lime, along with the development of efficient water pollution treatment equipment, to achieve source treatment of flotation wastewater, has become an urgent need for the green development of the industry.

[0003] When treating mineral processing wastewater, existing water pollution treatment equipment requires the addition of solid sodium hydroxide to adjust the pH. To ensure that the solid sodium hydroxide is fully mixed with the wastewater and achieve uniform pH adjustment, the existing equipment uses mechanical stirring, which is driven by a motor to rotate the impeller and promote the mixing of solid sodium hydroxide with the wastewater.

[0004] However, in the process of adjusting pH, the existing water pollution treatment equipment, with its stirring shaft and single-layer impeller, can only create turbulence in a localized area. After sodium hydroxide solid is added, it cannot quickly diffuse to the entire pool and mix with the wastewater, resulting in an imbalance in the pH adjustment of the entire wastewater pool.

[0005] Therefore, it is necessary to provide a water pollution treatment device and a lime-free clean flotation process for copper sulfide ore to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a water pollution treatment device and a lime-free clean flotation process for copper sulfide ore, which solves the problem that after sodium hydroxide solid is added, it cannot quickly diffuse to the whole pool and mix with the wastewater, resulting in an imbalance in the pH adjustment of the wastewater in the whole pool.

[0007] To solve the above-mentioned technical problems, the present invention provides a water pollution treatment device, comprising: a base;

[0008] A reaction vessel, which is fixedly mounted on the top of the base by a bracket;

[0009] A collection mechanism for feeding the collected wastewater into the interior of the reaction tank;

[0010] An adjustment mechanism is fixedly installed on the top of the base. The adjustment mechanism includes an adjustment tank, which is fixedly installed on the top of the base. A top plate is fixedly installed on the inner wall of the adjustment tank. Two adjustment motors are fixedly installed on the top of the top plate. The output shafts of the two adjustment motors are fixedly connected to adjustment shafts. The bottom ends of the two adjustment shafts penetrate the top of the top plate and extend into the interior of the adjustment tank. An upper impeller and a lower impeller are fixedly installed on the surfaces of the two adjustment shafts inside the adjustment tank. Two dosing pipes are connected to the top of the top plate. A feed hopper is connected to the top of the top plate. An adjustment pump is connected to the bottom of the adjustment tank through a connecting pipe. The output end of the adjustment pump is connected to an adjustment pipe.

[0011] An inclined plate sedimentation tank is fixedly installed on the top of the base, and one side of the inclined plate sedimentation tank is connected to the end of the regulating pipe.

[0012] A transfer mechanism is used to transfer wastewater from inside the reaction tank to the inside of the equalization tank.

[0013] Preferably, the top of the reaction vessel is connected to an exhaust pipe, and the top of the reaction vessel has a through hole.

[0014] Preferably, the collection mechanism is fixedly installed on the top of the base by a bracket. The collection mechanism includes a collection pool, which is fixedly installed on the top of the base by a bracket. The bottom of the collection pool is connected to a collection pump through a connecting pipe. The output end of the collection pump is connected to a collection pipe, and the end of the collection pipe is connected to the top of the reaction vessel.

[0015] Preferably, the transfer mechanism is connected to the bottom of the reaction vessel. The transfer mechanism includes a transfer pipe one, which is connected to the bottom of the reaction vessel. One end of the transfer pipe one is connected to a transfer pump. The top of the transfer pump is connected to a three-way valve through a connecting pipe. One side of the three-way valve is connected to a transfer pipe two, and the end of the transfer pipe two is connected to the top of the top plate.

[0016] Preferably, a stirring mechanism is fixedly installed on the top of the reaction vessel. The stirring mechanism includes a stirring motor, which is fixedly installed on the top of the reaction vessel. The output shaft of the stirring motor passes through the through hole and extends into the interior of the reaction vessel. A stirring shaft is fixedly connected to the end of the output shaft of the stirring motor, and three sets of stirring blades are fixedly installed on the surface of the stirring shaft.

[0017] Preferably, a driving mechanism is fixedly mounted on the surface of the stirring shaft. The driving mechanism includes an upper driving ring and a lower driving ring. Both the upper driving ring and the lower driving ring are fixedly mounted on the surface of the stirring shaft. Four upper driving plates are symmetrically fixedly mounted on the surface of the upper driving ring. An upper pawl is fixedly mounted between every two upper driving plates through a torsion spring seat. Four lower driving plates are symmetrically fixedly mounted on the surface of the lower driving ring. A lower pawl is fixedly mounted between every two lower driving plates through a torsion spring seat.

[0018] Preferably, a discharge mechanism is fixedly installed on the top of the reaction vessel. The discharge mechanism includes a storage tank 1 and a storage tank 2. The storage tank 1 is fixedly installed on the top of the reaction vessel by a bracket. The bottom of the storage tank 1 is connected to a discharge pipe 1. The bottom end of the discharge pipe 1 passes through the top of the reaction vessel and extends into the interior. A discharge machine 1 is rotatably installed on the inner wall of the discharge pipe 1 through two bearing seats 1. A ratchet 1 is fixedly installed on the bottom end of the central shaft of the discharge machine 1. The storage tank 2 is fixedly installed on the top of the reaction vessel by a bracket. The bottom of the storage tank 2 is connected to a discharge pipe 2. The bottom end of the discharge pipe 2 passes through the top of the reaction vessel and extends into the interior. A discharge machine 2 is rotatably installed on the inner wall of the discharge pipe 2 through two bearing seats 2. A ratchet 2 is fixedly installed on the bottom end of the central shaft of the discharge machine 2. Two upper pawls engage the ratchet 1, and two lower pawls engage the ratchet 2.

[0019] Preferably, a flipping mechanism is fixedly installed on the surfaces of the first discharge pipe and the second discharge pipe, respectively. The flipping mechanism includes connecting members. Two connecting members are fixedly installed on the surfaces of the first discharge pipe and the second discharge pipe, respectively. Two connecting pipes are fixedly installed on one side of each of the two connecting members. The two connecting pipes are adapted to and installed with the first ratchet and the second ratchet, respectively. A motor is fixedly installed on the surface of each of the two connecting pipes through a support. The output shaft of the motor is fixedly connected to a flipping shaft. One end of the flipping shaft passes through the surface of the connecting pipe and extends into the interior. The other end of the flipping shaft is rotatably installed on the inner wall of the connecting pipe. A flipping plate is fixedly installed on the surface of the flipping shaft inside the connecting pipe.

[0020] Preferably, the top of the three-way valve is connected to a riser pipe, the end of the riser pipe passes through the top of the reaction tank and extends into the interior, and the end of the riser pipe is connected to an annular sprinkler pipe.

[0021] A lime-free clean flotation process for copper sulfide ore includes the following steps:

[0022] S1: Prepare inhibitor one and inhibitor two, wherein inhibitor one includes at least one of sodium sulfite, sodium thiosulfate, sodium sulfide, and calcium polysulfide, and inhibitor two includes at least one of carboxymethyl cellulose, gallnut tannin, cysteine, and chitosan quaternary ammonium salt, wherein the main collector in the combined collector is ethoxycarbonyl thiourea and the auxiliary collector is Z-200.

[0023] S2: The raw ore is crushed and screened, and then ball-milled.

[0024] S3: After adding the inhibitor one to the roughing slurry and stirring, add the inhibitor two and stir again. Add the combined collector and perform preferential copper selection to obtain copper roughing concentrate and copper roughing tailings. The copper roughing concentrate is cleaned three times to obtain copper concentrate, and the roughing tailings are scavenged twice to obtain sulfur-containing tailings for sulfur flotation.

[0025] S4: Add hydrogen peroxide and pyrite collector butyl xanthate to the sulfur-containing tailings, and perform sulfur roughing to obtain sulfur roughing concentrate and sulfur roughing tailings. Perform three cleaning and two scavenging processes to obtain sulfur concentrate and tailings.

[0026] S5: Wastewater generated from mineral processing is transferred to water pollution treatment equipment for treatment and reuse.

[0027] Compared with related technologies, the water pollution treatment equipment provided by the present invention has the following beneficial effects:

[0028] This invention provides a water pollution treatment device. It efficiently decomposes residual hydrogen peroxide through the catalytic oxidation of calcium gluconate in a reaction tank, avoiding interference from the oxidant in subsequent treatments and ensuring the stability of the treatment system. In the equalization tank, a three-dimensional circulating flow formed by the downward pressure of the upper impeller and the upward rotation of the lower impeller allows sodium hydroxide to rapidly and evenly diffuse in the wastewater, achieving efficient pH adjustment without dead zones throughout the tank. This significantly improves reagent utilization and reaction efficiency. PAM and PAC are added through a dosing pipe to carry out a coagulation reaction, efficiently destabilizing fine suspended particles and colloidal substances and forming large flocs. The clarified liquid after solid-liquid separation in an inclined plate sedimentation tank is recycled back to production, while the treated wastewater is reused, reducing environmental pollution and protecting the environment. This achieves the dual benefits of water pollution treatment and resource recycling. Attached Figure Description

[0029] Figure 1 A schematic diagram of a preferred embodiment of a water pollution treatment device provided by the present invention;

[0030] Figure 2 Another structural schematic diagram of a preferred embodiment of a water pollution treatment device;

[0031] Figure 3 for Figure 1 The diagram shows the structure of the collection mechanism.

[0032] Figure 4 for Figure 1 The diagram shows the structure of the transfer mechanism.

[0033] Figure 5 for Figure 1 The diagram shows the structure of the adjustment mechanism;

[0034] Figure 6 A schematic diagram of the structure of a second embodiment of a water pollution treatment device;

[0035] Figure 7 Another structural schematic diagram of a second embodiment of a water pollution treatment device;

[0036] Figure 8 for Figure 6 The diagram shows the installation of the stirring mechanism;

[0037] Figure 9 for Figure 8 The diagram shows the structure of the stirring mechanism.

[0038] Figure 10 for Figure 8 The diagram shows the structure of the drive mechanism.

[0039] Figure 11 for Figure 8 The diagram shown is a structural schematic of the discharge mechanism;

[0040] Figure 12 for Figure 8 Another schematic diagram of the discharge mechanism shown;

[0041] Figure 13 for Figure 8 The diagram shows the structure of the flipping mechanism.

[0042] Figure 14 This is a process flow diagram of a lime-free clean flotation process for copper sulfide ores.

[0043] Numbered in the diagram: 1. Base; 2. Collection mechanism; 201. Collection tank; 202. Collection pump; 203. Collection pipe; 3. Reaction tank; 4. Transfer mechanism; 401. Transfer pipe one; 402. Transfer pump; 403. Three-way valve; 404. Transfer pipe two; 5. Adjustment mechanism; 501. Adjustment tank; 502. Top plate; 503. Adjustment motor; 504. Adjustment shaft; 505. Upper impeller; 506. Lower impeller; 507. Dosing pipe; 508. Feed hopper; 509. Adjustment pump; 510. Adjustment pipe; 6. Inclined plate sedimentation tank; 7. Stirring mechanism; 701. Stirring motor; 702. Stirring shaft; 703. Stirring blade; 8. Drive mechanism; 801. 802. Upper drive ring; 803. Upper drive plate; 804. Upper pawl; 805. Lower drive plate; 806. Lower pawl; 9. Discharge mechanism; 901. Storage box one; 902. Discharge pipe one; 903. Discharge machine one; 904. Bearing seat one; 905. Ratchet one; 906. Storage box two; 907. Discharge pipe two; 908. Discharge machine two; 909. Bearing seat two; 910. Ratchet two; 10. Tilting mechanism; 1001. Connecting part; 1002. Connecting pipe; 1003. Motor; 1004. Tilting shaft; 1005. Tilting plate; 11. Exhaust pipe; 12. Through hole; 13. Lifting pipe; 14. Annular sprinkler pipe. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] First Embodiment

[0046] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A water pollution treatment device, comprising: a base 1;

[0047] The reaction vessel 3 is fixedly installed on the top of the base 1 by a bracket;

[0048] Collection mechanism 2, which is used to input the collected wastewater into the interior of the reaction tank 3;

[0049] An adjustment mechanism 5 is fixedly installed on the top of the base 1. The adjustment mechanism 5 includes an adjustment tank 501, which is fixedly installed on the top of the base 1. A top plate 502 is fixedly installed on the inner wall of the adjustment tank 501. Two adjustment motors 503 are fixedly installed on the top of the top plate 502. The output shafts of the two adjustment motors 503 are fixedly connected to adjustment shafts 504. The bottom ends of the two adjustment shafts 504 penetrate the top of the top plate 502 and extend into the interior of the adjustment tank 501. An upper impeller 505 and a lower impeller 506 are fixedly installed on the surfaces of the two adjustment shafts 504 inside the adjustment tank 501. Two dosing pipes 507 are connected to the top of the top plate 502. A feed hopper 508 is connected to the top of the top plate 502. An adjustment pump 509 is connected to the bottom of the adjustment tank 501 through a connecting pipe. The output end of the adjustment pump 509 is connected to an adjustment pipe 510.

[0050] Inclined plate sedimentation tank 6 is fixedly installed on the top of the base 1, and one side of the inclined plate sedimentation tank 6 is connected to the end of the regulating pipe 510.

[0051] Transfer mechanism 4 is used to transfer the wastewater inside the reaction tank 3 to the inside of the regulating tank 501.

[0052] The top of the reaction vessel 3 is connected to an exhaust pipe 11, and the top of the reaction vessel 3 is provided with a through hole 12.

[0053] The collection mechanism 2 is fixedly installed on the top of the base 1 by a bracket. The collection mechanism 2 includes a collection pool 201, which is fixedly installed on the top of the base 1 by a bracket. The bottom of the collection pool 201 is connected to a collection pump 202 through a connecting pipe. The output end of the collection pump 202 is connected to a collection pipe 203, and the end of the collection pipe 203 is connected to the top of the reaction vessel 3.

[0054] The transfer mechanism 4 is connected to the bottom of the reaction vessel 3. The transfer mechanism 4 includes a first transfer pipe 401, which is connected to the bottom of the reaction vessel 3. One end of the first transfer pipe 401 is connected to a transfer pump 402. The top of the transfer pump 402 is connected to a three-way valve 403 through a connecting pipe. One side of the three-way valve 403 is connected to a second transfer pipe 404. The end of the second transfer pipe 404 is connected to the top of the top plate 502.

[0055] In actual use, the upper impeller 505 is a downward-pressing type, and the lower impeller 506 is an upward-flipping type.

[0056] The working principle of the water pollution treatment equipment provided by this invention is as follows:

[0057] First, the wastewater after mineral processing is collected in the collection tank 201. Wastewater from different stages of mineral processing is collected, and the collection pump 202 is started to pump the wastewater through the collection pipe 203 into the reaction tank 3.

[0058] Then, after the wastewater is fed into the interior of the reaction tank 3, calcium gluconate is manually introduced through the through hole 12 to catalyze the decomposition of residual hydrogen peroxide. The residual hydrogen peroxide in the wastewater is decomposed into water and oxygen by catalytic oxidation reaction. After the catalysis is completed, the transfer pump 402 is started, and the decomposed wastewater is extracted through the first transfer pipe 401 and fed into the interior of the equalization tank 501 through the second transfer pipe 404 after passing through the three-way valve 403.

[0059] Finally, sodium hydroxide is manually added to the equalization tank 501 through the feed hopper 508. Two equalization motors 503 are started to drive two equalization shafts 504 to rotate. The equalization shafts 504 drive the upper impeller 505 and the lower impeller 506 to rotate. The upper impeller 505 is a downward-pressing type, and the lower impeller 506 is an upward-turning type, forming an up-and-down circulation to quickly diffuse the sodium hydroxide solid throughout the tank and fully mix it with the wastewater to adjust the pH. There are no dead zones in the entire tank, which improves the utilization efficiency. Then, PAM and PAC are added sequentially through two dosing pipes 507 to carry out a coagulation reaction, which destabilizes the fine suspended particles and colloidal substances in the wastewater and forms large flocs. After coagulation, the equalization pump 509 is started and the coagulated wastewater is fed into the inclined plate sedimentation tank 6 through the equalization pipe 510 for solid-liquid separation. The clear liquid is then recycled.

[0060] Compared with related technologies, the water pollution treatment equipment provided by the present invention has the following beneficial effects:

[0061] Residual hydrogen peroxide is efficiently decomposed by calcium gluconate catalytic oxidation in reaction tank 3, avoiding interference from the oxidant to subsequent treatment and ensuring the stability of the treatment system. In equalization tank 501, the three-dimensional circulating flow formed by the downward pressure of the upper impeller 505 and the upward flipping of the lower impeller 506 allows sodium hydroxide to diffuse rapidly and evenly in the wastewater, achieving efficient pH adjustment without dead zones in the entire tank, greatly improving the utilization rate of reagents and reaction efficiency. PAM and PAC are added through dosing pipe 507 to carry out coagulation reaction, which efficiently destabilizes fine suspended particles and colloidal substances and forms large flocs. The clear liquid after solid-liquid separation in inclined plate sedimentation tank 6 is recycled back to production. The wastewater is treated and reused, reducing environmental pollution and protecting the environment, while achieving the dual benefits of water pollution treatment and resource recycling.

[0062] Second Embodiment

[0063] Please refer to the following: Figures 6-13Based on the water pollution treatment device provided in the first embodiment of this application, the second embodiment of this application proposes another water pollution treatment device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0064] Specifically, the water pollution treatment device provided in the second embodiment of this application differs in that a stirring mechanism 7 is fixedly installed on the top of the reaction tank 3. The stirring mechanism 7 includes a stirring motor 701, which is fixedly installed on the top of the reaction tank 3. The output shaft of the stirring motor 701 passes through the through hole 12 and extends into the interior of the reaction tank 3. A stirring shaft 702 is fixedly connected to the end of the output shaft of the stirring motor 701. Three sets of stirring blades 703 are fixedly installed on the surface of the stirring shaft 702.

[0065] A drive mechanism 8 is fixedly mounted on the surface of the stirring shaft 702. The drive mechanism 8 includes an upper drive ring 801 and a lower drive ring 804. Both the upper drive ring 801 and the lower drive ring 804 are fixedly mounted on the surface of the stirring shaft 702. Four upper drive plates 802 are symmetrically fixedly mounted on the surface of the upper drive ring 801. An upper pawl 803 is fixedly mounted between every two upper drive plates 802 through a torsion spring seat. Four lower drive plates 805 are symmetrically fixedly mounted on the surface of the lower drive ring 804. A lower pawl 806 is fixedly mounted between every two lower drive plates 805 through a torsion spring seat.

[0066] A discharge mechanism 9 is fixedly installed on the top of the reaction vessel 3. The discharge mechanism 9 includes a storage tank 901 and a storage tank 906. The storage tank 901 is fixedly installed on the top of the reaction vessel 3 by a bracket. The bottom of the storage tank 901 is connected to a discharge pipe 902. The bottom end of the discharge pipe 902 passes through the top of the reaction vessel 3 and extends into the interior. A discharge machine 903 is rotatably mounted on the inner wall of the discharge pipe 902 through two bearing seats 904. A ratchet 90 is fixedly installed at the bottom end of the central shaft of the discharge machine 903. 5. The storage tank 2 906 is fixedly installed on the top of the reaction vessel 3 by a bracket. The bottom of the storage tank 2 906 is connected to the discharge pipe 2 907. The bottom end of the discharge pipe 2 907 passes through the top of the reaction vessel 3 and extends into the interior. The inner wall of the discharge pipe 2 907 is rotatably mounted with the discharge machine 2 908 through two bearing seats 2 909. The bottom end of the central shaft of the discharge machine 2 908 is fixedly mounted with the ratchet 2 910. The two upper pawls 803 engage the ratchet 1 905, and the two lower pawls 806 engage the ratchet 2 910.

[0067] A flipping mechanism 10 is fixedly installed on the surfaces of the first discharge pipe 902 and the second discharge pipe 907, respectively. The flipping mechanism 10 includes a connector 1001. Two connectors 1001 are fixedly installed on the surfaces of the first discharge pipe 902 and the second discharge pipe 907, respectively. Two connecting pipes 1002 are fixedly installed on one side of each of the two connectors 1001. The two connecting pipes 1002 are adapted to and installed with the first ratchet 905 and the second ratchet 910, respectively. A motor 1003 is fixedly installed on the surface of each of the two connecting pipes 1002 through a support. The output shaft of the motor 1003 is fixedly connected to a flipping shaft 1004. One end of the flipping shaft 1004 passes through the surface of the connecting pipe 1002 and extends into it. The other end of the flipping shaft 1004 is rotatably installed on the inner wall of the connecting pipe 1002. A flipping plate 1005 is fixedly installed on the surface of the flipping shaft 1004 located inside the connecting pipe 1002.

[0068] The top of the three-way valve 403 is connected to a riser pipe 13, the end of the riser pipe 13 passes through the top of the reaction tank 3 and extends into the interior, and the end of the riser pipe 13 is connected to an annular sprinkler pipe 14.

[0069] In actual use, both storage bin 1 (901) and storage bin 2 (906) contain a chemical agent, which is solid calcium gluconate; the bottom of the annular sprinkler pipe 14 is perforated.

[0070] The working principle of the water pollution treatment equipment provided in this embodiment is as follows:

[0071] First, after the collected wastewater is input into the reaction tank 3, the stirring motor 701 is started, which drives the three sets of stirring blades 703 to rotate clockwise via the stirring shaft 702. During the clockwise rotation of the stirring shaft 702, the upper drive ring 801 drives the upper drive plate 802 to rotate clockwise. As the upper drive plate 802 drives the upper pawl 803 to rotate clockwise, it engages with ratchet wheel 905. At this time, the lower pawl 806, which is rotating clockwise, does not engage with ratchet wheel 910. Ratchet wheel 905 drives the discharge machine 903 to rotate and discharge the wastewater. The calcium gluconate in the feed hopper 901 is discharged and sent to the top of the tilting plate 1005. The stirring motor 701 switches its rotation direction to counterclockwise. During the switching of the rotation direction, the motor 1003 at the discharge pipe 902 is turned on simultaneously. The motor 1003 drives the tilting shaft 1004 to rotate. At this time, the tilting plate 1005 sends the calcium gluconate into the wastewater. Then the connecting pipe 1002 is closed again to prevent the gas and moisture generated by decomposition from mixing and causing the calcium gluconate to clump. At this time, the stirring blade 703 stirs the wastewater and calcium gluconate counterclockwise.

[0072] Then, during the counterclockwise mixing of wastewater, the lower pawl 806 engages with ratchet 2 910, while the upper pawl 803 does not engage with ratchet 1 905. The discharge machine 2 908 conveys calcium gluconate to the top of another tilting plate 1005. After the counterclockwise mixing is completed, the rotation direction of the stirring motor 701 is switched to clockwise again. During the switching of the rotation direction, the motor 1003 at the discharge pipe 2 907 is simultaneously turned on to send calcium gluconate into the wastewater and mix it clockwise. Then the connecting pipe 1002 is closed again.

[0073] Repeat the above process until the calcium gluconate is completely decomposed into hydrogen peroxide. After the final rotation ends, do not switch the rotation direction of the stirring motor 701. At this time, one of the connecting pipes 1002 stores calcium gluconate. After the next round of wastewater is input, switch the rotation direction and put the calcium gluconate stored in the previous round into the wastewater to complete the cycle.

[0074] During the process of switching the mixing direction of wastewater and calcium gluconate to achieve complete mixing, automatic quantitative feeding is also realized. At the same time, the switching direction enables the rapid discharge of the flip plate 1005 and the sealing of the moisture passage.

[0075] Finally, during the process of switching the mixing direction and stirring, and coordinating with automatic quantitative feeding, the transfer pump 402, after passing through the three-way valve 403, inputs the wastewater into the interior of the annular sprinkler pipe 14 through the riser pipe 13, and sprays water from the bottom of the annular sprinkler pipe 14. The bubbles generated by the decomposition of hydrogen peroxide would originally accumulate a large amount of foam on the surface of the pool, but when the spray water falls from a height, the impact force of the water droplets continuously breaks the surface foam, eliminating the foam layer and also assisting in the efficient mixing of calcium gluconate and wastewater.

[0076] Compared with related technologies, the water pollution treatment equipment provided in this embodiment has the following beneficial effects:

[0077] The stirring motor 701 switches between forward and reverse rotation. When rotating clockwise, the stirring blade 703 rotates clockwise, driving the ratchet wheel 905 via the upper pawl 803, thus discharging and storing the material from the discharge machine 903. At this time, the discharge machine 908 discharges the stored calcium gluconate into the wastewater for quantitative addition, simultaneously completing the clockwise mixing of wastewater and calcium gluconate. When switching to counterclockwise rotation, the stirring blade 703 rotates counterclockwise, driving the ratchet wheel 910 via the lower pawl 806, thus discharging and storing the material from the discharge machine 908. At this time, the discharge machine 908 discharges and stores the material. 3. The stored calcium gluconate is quantitatively added to the wastewater, and the wastewater and calcium gluconate are mixed counterclockwise simultaneously. The electrical signal for switching the rotation direction of the stirring motor 701 is output to the two motors 1003 to tumble and discharge the material. After discharge, the connecting pipe 1002 is quickly sealed, preventing moisture and decomposition gases in the reaction tank 3 from flowing back into the storage tanks 901 and 906. This effectively prevents the calcium gluconate from clumping and becoming ineffective due to moisture absorption, ensuring the long-term storage stability of the reagent. During the alternating forward and reverse rotation of the stirring blades 703, the material is tumbled... The fixed-point feeding of the rotating plate 1005 allows the reagent and wastewater to mix repeatedly under different swirling directions, completely eliminating mixing dead zones and improving the efficiency and thoroughness of the catalytic decomposition reaction. Alternating discharge and dynamic sealing ensure reagent activity and mixing uniformity. At the end of a single batch treatment, calcium gluconate stored in one connecting pipe 1002 is retained. When the next batch of wastewater enters, the pre-stored calcium gluconate can be preferentially added by switching the rotation direction, eliminating the feeding waiting time at the start of each treatment cycle and achieving seamless batch-to-batch transitions, significantly improving wastewater treatment efficiency. The continuous operation efficiency is achieved by establishing a continuous circulation pre-storage and addition mode. While mixing and feeding are in progress, the wastewater is drawn to a high place by the transfer pump 402 for ring spraying. The impact force of the water droplets falling from the height continuously breaks up the foam accumulated on the surface of the pool due to the decomposition of hydrogen peroxide. There is no need to add additional defoamer or set up a mechanical defoaming device, which solves the problem of foam affecting the treatment environment. At the same time, as the spray water falls back into the reaction tank 3, it further mixes and circulates the calcium gluconate with the wastewater, which helps to enhance the mixing effect and achieves synergistic effect of spray defoaming and efficient mixing.

[0078] In another scenario, the aforementioned water pollution treatment equipment can also treat other wastewater containing hydrogen peroxide and discharge it in compliance with standards.

[0079] A lime-free clean flotation process for copper sulfide ore includes the following steps:

[0080] S1: Prepare inhibitor one and inhibitor two. Inhibitor one includes at least one of sodium sulfite, sodium thiosulfate, sodium sulfide, and calcium polysulfide. The mass ratio of inhibitor one is (1-5):(0-5):(0-3):(0-3). Inhibitor two includes at least one of carboxymethyl cellulose, gallnut tannin, cysteine, and chitosan quaternary ammonium salt. The mass ratio of carboxymethyl cellulose, gallnut tannin, cysteine, and chitosan quaternary ammonium salt in inhibitor two is (5-10):(0-5):(3-6):(2-5). The main collector of the combined collector is ethoxycarbonyl thiourea, and the auxiliary collector is Z-200. The mass ratio of the collectors is 1:(0.1-0.5).

[0081] S2: The raw ore is crushed and screened to meet the corresponding particle size requirements. 1 kg of the screened ore is then ball-milled.

[0082] S3: After adding the inhibitor one to the roughing slurry and stirring, add the inhibitor two and stir again. Add the combined collector and perform preferential copper selection to obtain copper roughing concentrate and copper roughing tailings. The copper roughing concentrate is cleaned three times to obtain copper concentrate, and the roughing tailings are scavenged twice to obtain sulfur-containing tailings for sulfur flotation.

[0083] S4: Add hydrogen peroxide and pyrite collector butyl xanthate to sulfur-containing tailings, and perform sulfur roughing to obtain sulfur roughing concentrate and sulfur roughing tailings. Perform three cleaning and two scavenging processes to obtain sulfur concentrate and tailings.

[0084] S5: Wastewater generated from mineral processing is transferred to water pollution treatment equipment for treatment and reuse.

[0085] In practical use, the particle size of the ore sample in S1 is ≤5mm, the ball milling time is 10-25min, the fineness is -200 mesh accounting for 40-70%, and the mass concentration of the slurry is 40-55%; in S2, the amount of inhibitor one added is 100-500g / t of raw ore, the amount of inhibitor two added is 100-500g / t of raw ore, the amount of beneficiation added is 10%-30% of roughing, the amount of collector is 50-200g / t of raw ore, and the amount of scavenging added is 10%-30% of roughing; in S3, the amount of hydrogen peroxide added is 100-300g / t of raw ore, the amount of butyl xanthate added is 100-500g / t of raw ore, and the amount of scavenging added is 10%-30% of roughing; in S4, the amount of calcium gluconate added is 0.1-0.5kg / t of beneficiation wastewater, and the reaction time is 0.5-2h.

[0086] First Embodiment

[0087] The raw copper sulfide ore was crushed to a particle size of ≤5mm, and a 1kg sample was ball-milled for 15min. The -200 mesh content was 60%, and the slurry concentration was 45%.

[0088] Inhibitor 1 has the following composition: 300g sodium sulfite, 150g sodium thiosulfate, 30g sodium sulfide, and 30g calcium polysulfide, in a mass ratio of 1:0.5:0.1:0.1. The amount added for rough selection is 300g / t, and the amount added for fine selection is 50g / t. Inhibitor 2 has the following composition: 300g carboxymethyl cellulose, 100g gallnut tannin, 50g cysteine, and 50g chitosan quaternary ammonium salt, in a mass ratio of 3:1:0.5:0.5. The amount added for rough selection is 200g / t, and the amount added for fine selection is 30g / t.

[0089] Combined collector: 100g of main collector ethoxycarbonylthiourea and 30g of auxiliary collector Z-200, with a mass ratio of 1:0.3 and an addition amount of 100g / t.

[0090] After activating the copper tailings with 200g / t of hydrogen peroxide for 10 minutes, add 300g / t of butyl xanthate to float sulfur.

[0091] The mineral processing wastewater is treated with 0.2 kg / t of calcium gluconate for 1 hour and then reused.

[0092] Second Embodiment

[0093] Inhibitor 1 ratio: sodium sulfite, sodium thiosulfate, sodium sulfide, and calcium polysulfide in a mass ratio of 1:0.4:0.2:0.2; Inhibitor 2 ratio: carboxymethyl cellulose, gallnut tannin, cysteine, and chitosan quaternary ammonium salt in a mass ratio of 3:2:1:1; Collector ratio: ethoxycarbonyl thiourea and Z-200 in a mass ratio of 1:0.4; other parameters are the same as in the first embodiment.

[0094] Third Embodiment

[0095] The amount of hydrogen peroxide used is 300g / t, and the activation time is 15min.

[0096] The dosage of butyl xanthate is 250 g / t, and the wastewater treatment uses 0.2 kg / t of calcium gluconate for a reaction time of 1.5 h. The parameters for selecting the copper segment are the same as in the first embodiment.

[0097] Fourth embodiment

[0098] The dosage of hydrogen peroxide was 150 g / t, butyl xanthate was 400 g / t, and calcium gluconate was added to the wastewater treatment solution for 0.1 kg / t, reacting for 1.5 h. The parameters for selecting the copper segment were the same as in the first embodiment.

[0099] parameter First Embodiment Second Embodiment Third Embodiment Fourth embodiment Copper concentrate grade (%) 25.8 28.5 25.3 22.9 Copper recovery rate (%) 92.3 88.5 91.6 88.6 Sulfur concentrate grade (%) 43.5 44.6 46.3 40.1 Sulfur recovery rate (%) 83.4 81.9 86.5 80.7

[0100] Table 1: Flotation Indicators of Examples

[0101] First comparison

[0102] Inhibitor 1 uses only sodium sulfite, and inhibitor 2 uses only carboxymethyl cellulose; other parameters are the same as in the first embodiment.

[0103] Second pair of proportions

[0104] The copper collector uses only ethoxycarbonylthiourea to eliminate the Z-200 synergistic effect, and other parameters are the same as in the first embodiment.

[0105] Third pair of proportions

[0106] The pH was adjusted to 5.0 using sulfuric acid for acid activation, and the amount of butyl xanthate was increased to 500 g / t. Other parameters were the same as in the first embodiment.

[0107] Fourth comparison

[0108] Wastewater is directly reused without the addition of calcium gluconate, and hydrogen peroxide residue accumulates. Other parameters are the same as in the first embodiment.

[0109] parameter First comparison Second pair of proportions Third pair of proportions Fourth comparison Copper concentrate grade (%) 18.7 23.3 22.6 18.2 Copper recovery rate (%) 79.2 72.5 84.1 76.8 Sulfur concentrate grade (%) 37.1 38.9 29.4 39.2 Sulfur recovery rate (%) 76.4 80.7 68.9 81.4

[0110] Table 2: Comparative Flotation Indicators

[0111] Compared with related technologies, the lime-free clean flotation process for copper sulfide ore provided by this invention has the following beneficial effects:

[0112] This invention achieves deep inhibition of pyrite and efficient separation of copper and sulfur under lime-free conditions through a combined inhibitor system. Compared with the comparative ratio of simplified inhibitor components, this system significantly improves the grade of copper concentrate and reduces sulfur inclusions. The dual collector system, ethoxycarbonyl thiourea and Z-200, significantly improves the recovery rate of fine copper particles in a natural pH environment through molecular synergy, solving the problem of insufficient selectivity of single collectors. The hydrogen peroxide oxidation activation technology simultaneously eliminates reagent residues and activates sulfur minerals, completely replacing the strong acid activation process and avoiding the risk of equipment corrosion.

[0113] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A water pollution treatment device, characterized in that, include: abutment; A reaction vessel, which is fixedly mounted on the top of the base by a bracket; A collection mechanism for feeding the collected wastewater into the interior of the reaction tank; An adjustment mechanism is fixedly installed on the top of the base. The adjustment mechanism includes an adjustment tank, which is fixedly installed on the top of the base. A top plate is fixedly installed on the inner wall of the adjustment tank. Two adjustment motors are fixedly installed on the top of the top plate. The output shafts of the two adjustment motors are fixedly connected to adjustment shafts. The bottom ends of the two adjustment shafts penetrate the top of the top plate and extend into the interior of the adjustment tank. An upper impeller and a lower impeller are fixedly installed on the surfaces of the two adjustment shafts inside the adjustment tank. Two dosing pipes are connected to the top of the top plate. A feed hopper is connected to the top of the top plate. An adjustment pump is connected to the bottom of the adjustment tank through a connecting pipe. The output end of the adjustment pump is connected to an adjustment pipe. An inclined plate sedimentation tank is fixedly installed on the top of the base, and one side of the inclined plate sedimentation tank is connected to the end of the regulating pipe. A transfer mechanism is used to transfer wastewater from inside the reaction tank to the inside of the equalization tank.

2. The water pollution treatment equipment according to claim 1, characterized in that, The top of the reaction vessel is connected to an exhaust pipe, and a through hole is provided at the top of the reaction vessel.

3. The water pollution treatment equipment according to claim 1, characterized in that, The collection mechanism is fixedly installed on the top of the base by a bracket. The collection mechanism includes a collection pool, which is fixedly installed on the top of the base by a bracket. The bottom of the collection pool is connected to a collection pump through a connecting pipe. The output end of the collection pump is connected to a collection pipe, and the end of the collection pipe is connected to the top of the reaction vessel.

4. The water pollution treatment equipment according to claim 1, characterized in that, The transfer mechanism is connected to the bottom of the reaction vessel. The transfer mechanism includes a transfer pipe one, which is connected to the bottom of the reaction vessel. One end of the transfer pipe one is connected to a transfer pump. The top of the transfer pump is connected to a three-way valve through a connecting pipe. One side of the three-way valve is connected to a transfer pipe two. The end of the transfer pipe two is connected to the top of the top plate.

5. A water pollution treatment device according to claim 2, characterized in that, A stirring mechanism is fixedly installed on the top of the reaction vessel. The stirring mechanism includes a stirring motor, which is fixedly installed on the top of the reaction vessel. The output shaft of the stirring motor passes through the through hole and extends into the interior of the reaction vessel. A stirring shaft is fixedly connected to the end of the output shaft of the stirring motor, and three sets of stirring blades are fixedly installed on the surface of the stirring shaft.

6. A water pollution treatment device according to claim 5, characterized in that, A drive mechanism is fixedly mounted on the surface of the stirring shaft. The drive mechanism includes an upper drive ring and a lower drive ring. Both the upper drive ring and the lower drive ring are fixedly mounted on the surface of the stirring shaft. Four upper drive plates are symmetrically fixedly mounted on the surface of the upper drive ring. An upper pawl is fixedly mounted between every two upper drive plates through a torsion spring seat. Four lower drive plates are symmetrically fixedly mounted on the surface of the lower drive ring. A lower pawl is fixedly mounted between every two lower drive plates through a torsion spring seat.

7. A water pollution treatment device according to claim 6, characterized in that, A discharge mechanism is fixedly installed on the top of the reaction vessel. The discharge mechanism includes a storage tank 1 and a storage tank 2. The storage tank 1 is fixedly installed on the top of the reaction vessel by a bracket. The bottom of the storage tank 1 is connected to a discharge pipe 1. The bottom end of the discharge pipe 1 passes through the top of the reaction vessel and extends into the interior. A discharge machine 1 is rotatably installed on the inner wall of the discharge pipe 1 through two bearing seats 1. A ratchet 1 is fixedly installed on the bottom end of the central shaft of the discharge machine 1. The storage tank 2 is fixedly installed on the top of the reaction vessel by a bracket. The bottom of the storage tank 2 is connected to a discharge pipe 2. The bottom end of the discharge pipe 2 passes through the top of the reaction vessel and extends into the interior. A discharge machine 2 is rotatably installed on the inner wall of the discharge pipe 2 through two bearing seats 2. A ratchet 2 is fixedly installed on the bottom end of the central shaft of the discharge machine 2. Two upper pawls engage the ratchet 1, and two lower pawls engage the ratchet 2.

8. A water pollution treatment device according to claim 7, characterized in that, A flipping mechanism is fixedly installed on the surfaces of discharge pipe one and discharge pipe two, respectively. The flipping mechanism includes connecting parts. Two connecting parts are fixedly installed on the surfaces of discharge pipe one and discharge pipe two, respectively. Two connecting pipes are fixedly installed on one side of each of the two connecting parts. The two connecting pipes are adapted to ratchet one and ratchet two, respectively. Motors are fixedly installed on the surfaces of the two connecting pipes through supports. The output shaft of the motor is fixedly connected to a flipping shaft. One end of the flipping shaft passes through the surface of the connecting pipe and extends into the interior. The other end of the flipping shaft is rotatably installed on the inner wall of the connecting pipe. A flipping plate is fixedly installed on the surface of the flipping shaft inside the connecting pipe.

9. A water pollution treatment device according to claim 4, characterized in that, The top of the three-way valve is connected to a riser pipe, the end of which passes through the top of the reaction tank and extends into the interior. The end of the riser pipe is connected to an annular sprinkler pipe.

10. A lime-free clean flotation process for copper sulfide ores, characterized in that, Includes the following steps: S1: Prepare inhibitor one and inhibitor two, wherein inhibitor one includes at least one of sodium sulfite, sodium thiosulfate, sodium sulfide, and calcium polysulfide, and inhibitor two includes at least one of carboxymethyl cellulose, gallnut tannin, cysteine, and chitosan quaternary ammonium salt, wherein the main collector in the combined collector is ethoxycarbonyl thiourea and the auxiliary collector is Z-200. S2: The raw ore is crushed and screened, and then ball-milled. S3: After adding the inhibitor one to the roughing slurry and stirring, add the inhibitor two and stir again. Add the combined collector and perform preferential copper selection to obtain copper roughing concentrate and copper roughing tailings. The copper roughing concentrate is cleaned three times to obtain copper concentrate, and the roughing tailings are scavenged twice to obtain sulfur-containing tailings for sulfur flotation. S4: Hydrogen peroxide and pyrite collector butyl xanthate are added to the sulfur-containing tailings to obtain sulfur roughing concentrate and sulfur roughing tailings. Sulfur concentrate and tailings are obtained by three cleaning processes and two scavenging processes. S5: Wastewater generated from mineral processing is transferred to a water pollution treatment device as described in any one of claims 1-9 for treatment and reuse.

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