Environment-friendly flotation method and system for flotation recovery of copper ore and gold ore

Abstract

The invention discloses an environment-friendly flotation method and system for flotation recovery of copper ore and gold ore, and relates to the technical field of wastewater treatment.The environment-friendly flotation method comprises the steps that minerals are prepared and treated, the treated minerals are subjected to rough flotation and fine flotation through a flotation machine, and water treatment is conducted on ore pulp obtained after rough flotation and an ore pulp mixture in the flotation machine; the treated water resource is conveyed into a flotation machine to participate in ore pulp concentration, the concentrated foam ore pulp is subjected to a follow-up recycling process, metal materials in the ore pulp are recycled and extracted, water treatment is conducted on the ore pulp with the metal materials extracted, the quality of ore pulp water treatment and quality inspection after waste water treatment are detected, and the treated waste water is discharged and used. According to the environment-friendly flotation method and system for flotation recovery of the copper ore and the gold ore, wastewater treatment and recycling are implemented in the flotation process, it is ensured that water resources in ore pulp can be reused, dependence on a new water source is reduced, and consumption of the water resources is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to an environmentally friendly flotation method and system for flotation recovery of copper and gold ores. Background Art

[0002] The purpose of mineral extraction is to extract valuable metals, compounds or other useful components from ores or minerals existing in nature through a series of physical and chemical processes. When extracting copper and gold ores, flotation is usually used.

[0003] Flotation of copper and gold ores is achieved by adding powdered minerals, reagents and water flow into the flotation machine, so that the gas in the flotation machine is introduced into the ore pulp, forming a large number of fine bubbles. The treated mineral particles have enhanced surface hydrophobicity and combine with the bubbles to form mineral-bubble complexes. These complexes float in the flotation tank to form a foam layer, while the unattached minerals settle to the bottom, allowing the effective components of the copper and gold ores to be separated and concentrated.

[0004] Since the flotation machine extracts copper and gold ores through bubbles and reagents, a certain proportion of water flow needs to be added, and both the bubble complex and the residual precipitation complex inside the flotation machine contain water, and the bubble complex still requires subsequent purification steps, and a large amount of wastewater will be generated when the copper and gold ores are refined. The minerals and added reagents will pollute water resources, and the direct discharge of the polluted wastewater will cause environmental pollution. When treating sewage, the sewage in the copper and gold refining process is usually collected and treated in a unified manner. However, when extracting copper and gold ores, the quality of the sewage generated is different, and unified treatment will increase the cost of sewage treatment, which has certain defects. Summary of the Invention

[0005] The object of the present invention is to provide an environmentally friendly flotation method and system for flotation recovery of copper and gold ores, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an environmentally friendly flotation method for flotation recovery of copper and gold ores, comprising the following specific steps:

[0007] S1: Preparation and processing of minerals, and use of flotation machines for roughing and concentrating of processed minerals;

[0008] S2: Treat the mixture of roughing pulp and pulp in the flotation machine with water, and transport the treated water to the flotation machine to participate in the pulp cleaning;

[0009] S3: Perform subsequent recovery process on the selected foam pulp to recover the metal materials in the pulp;

[0010] S4: treating the slurry after the metal material is extracted and testing the quality of the slurry water treatment;

[0011] S5: Quality inspection of wastewater after treatment, and discharge of treated wastewater for use.

[0012] Preferably, the preparation and processing of the mineral in S1 is to crush the mineral to 50-200 mesh, and transport the crushed mineral particles, flotation agent and water flow to the interior of the flotation machine. The flotation machine mixes and stirs the mineral particles, flotation agent and water flow to form a slurry mixture. The flotation machine stirs the slurry mixture at a speed of 30-100RPM. When the flotation machine stirs at a speed of 100RPM, it is used to mix and stir the mineral particles, flotation agent and water flow. The flotation agent is a mixture of a collector, a frother and an inhibitor.

[0013] Preferably, the sewage treatment equipment in S includes:

[0014] A bracket and a water tank, wherein the water tank is installed on the bracket and is used to store water required by the flotation machine for mineral flotation;

[0015] A first sedimentation tank and a second sedimentation tank, wherein the first sedimentation tank and the second sedimentation tank are both installed on the top of the bracket;

[0016] a first treatment tank and a second treatment tank, wherein the first treatment tank and the second treatment tank are installed on a bracket;

[0017] a first discharge pipe, the first discharge pipe being installed at the bottom of the side of the first treatment tank and the second treatment tank, one end of the first discharge pipe being connected to the water storage tank, and a first solenoid valve being installed on the first discharge pipe;

[0018] A sewage treatment tank, wherein the sewage treatment tank is installed on one side of the bracket;

[0019] a second discharge pipe, the second discharge pipe being installed at the bottom of one side of the first treatment tank and the second treatment tank, respectively, the second discharge pipe corresponding to the sewage treatment tank, and a second solenoid valve being installed on the second discharge pipe;

[0020] Filter boxes, the filter boxes are installed on the top of the first treatment tank and the top of the second treatment tank;

[0021] A drainage assembly is respectively installed on the first sedimentation tank and the second sedimentation tank, and the drainage assembly includes a drain pipe, which is respectively installed on the bottom of one side of the first sedimentation tank and the second sedimentation tank. One end of the drain pipe is connected to a bellows, and one end of the bellows is fixedly connected to a water inlet cover. The first sedimentation tank and the second sedimentation tank are fixedly connected with a mounting plate, and a driving cylinder is installed on the top of the mounting plate, and the output end of the driving cylinder is transmission-connected to the water inlet cover.

[0022] Preferably, when the roughing pulp and the pulp mixture in the flotation machine are subjected to water treatment in S2, the roughing pulp mixture and the pulp mixture in the flotation machine are first transported to a first sedimentation tank and a second sedimentation tank respectively, and a coagulant is added to the first sedimentation tank and the second sedimentation tank, and the roughing pulp mixture in the first sedimentation tank is stirred to break the bubbles in the roughing pulp mixture. After the bubbles in the first sedimentation tank are broken, the roughing pulp mixture in the first sedimentation tank is allowed to settle for a sedimentation time of -h, and the upper water flow in the first sedimentation tank is discharged to the first treatment tank, and a roughing precipitate is obtained in the first sedimentation tank, and the precipitate is transported to the flotation machine, and a flotation agent and water flow are added to the flotation machine to obtain a pulp-roughing mixture, and the pulp-roughing mixture is floated again to obtain a selected foam pulp.

[0023] Preferably, the S2 slurry mixture is transported to the second sedimentation tank, and the slurry mixture is precipitated in the second sedimentation tank, and then the upper water flow in the second sedimentation tank is discharged to the second treatment tank, and the content of dissolved salts, ions, heavy metal ions and organic matter in the sewage in the first treatment tank and the second treatment tank is detected. When the water flow in the first treatment tank and the second treatment tank meets the requirements of mineral selection, and the pH value in the first treatment tank and the second treatment tank is detected, acid and alkali solutions are added according to the pH value, and the pH value of the water flow in the first treatment tank and the second treatment tank is adjusted to make the pH value of the water flow between 6-10, and the water flow in the first treatment tank and the second treatment tank is transported through the first discharge pipe and discharged into the water storage tank for use by the flotation machine, so that the water flow in the water storage tank is selected with the roughing precipitate and the flotation agent. When the water flow in the first treatment tank and the second treatment tank does not meet the requirements of mineral selection, the water flow in the first treatment tank and the second treatment tank is discharged into the sewage treatment tank through the second discharge pipe.

[0024] Preferably, when recovering and extracting the metal material in the slurry in S3, the selected flotation foam is first transported to the first sedimentation tank again, and the slurry mixture in the flotation machine is transported to the second sedimentation tank for precipitation treatment again, so that the slurry mixture is precipitated in the first sedimentation tank for a precipitation time of -h, and the upper water flow in the first sedimentation tank is discharged to the first treatment tank, and the precipitate in the first treatment tank is filter-filtered to remove water in the precipitate. The discharged water is transported to the sewage treatment tank for treatment, and the precipitate is dried to reduce the moisture of roasting. The dried foam mineral is crushed using a ball mill, and a combustion aid is added for mixing to obtain a mixture to be roasted. The mixture to be roasted is placed in a roasting furnace for roasting. After the roasting is completed, the material in the furnace is cooled to room temperature by natural cooling. The roasted material is taken out of the furnace, and the roasted mineral is leached. The target gold and copper metals are dissolved in the liquid phase using volume, and the target metal is separated from the leachate by precipitation, filtration, and extraction to obtain the final metal pure product.

[0025] Preferably, the water treatment of the slurry in S4 is the treatment of sewage in the sewage treatment pool, including preliminary treatment, physical treatment, chemical treatment, biological treatment and deep treatment, and the quality of the slurry water treatment is tested including the pH value of the water, heavy metal content, suspended matter content, dissolved salt content and organic matter content.

[0026] Preferably, the preliminary treatment is to first perform wastewater sedimentation, use gravity to settle large particles of suspended matter, and use a grid to perform preliminary filtration on the wastewater before the wastewater is precipitated. The physical treatment is to further remove suspended matter and soluble pollutants in the water through sand filtration and activated carbon filtration, and use a flotation device to introduce fine bubbles into the wastewater so that the suspended matter and bubbles combine to form scum, which is separated from the water. The chemical treatment is to add chemical agents for coagulation and sedimentation according to the composition of the wastewater. Chemical agents include coagulants and flocculants. Coagulants help aggregate small particles to form large particles so that Sedimentation, flocculants further promote the coagulation and sedimentation of particles, and add alkaline solutions and acidic solutions to the pH value of the sewage to adjust the pH value of the sewage to a neutral range. The biological treatment removes organic matter and soluble pollutants in the water through the metabolism of microorganisms, and uses a biofilm reactor for treatment. The deep treatment includes oxidation treatment and reverse osmosis treatment. The oxidation treatment uses ozone oxidation and chlorine oxidation methods to deeply treat the water to remove difficult-to-degrade organic matter and heavy metal ions. Reverse osmosis membrane technology is used for deep treatment to remove dissolved ions and organic matter in the water.

[0027] Preferably, the post-treatment quality inspection of the wastewater in S5 is to test the water flow discharged after treatment, and test the pH value, heavy metal content, suspended solids content, dissolved salt content and organic matter content of the water until the water flow meets the discharge standards, and then perform resource recovery and discharge. The resource recovery and discharge is to reuse the treated water in flotation and other production processes to reduce the consumption of water resources, and by testing the data before and after the sewage treatment, the sewage removal rate is calculated by the following formula:

[0028]

[0029] Where E is the removal rate, C i is the concentration of pollutants in the influent, C f is the concentration of pollutants in the effluent.

[0030] The present invention also provides an environmentally friendly flotation system for flotation recovery of copper and gold ores, comprising:

[0031] A mineral flotation module is used to crush the minerals and put them into a flotation machine for flotation. During flotation, the mineral flotation module collects data information of the mineral flotation through an information collection sensor;

[0032] A sewage treatment system is used to treat wastewater generated by the mineral flotation module. The sewage treatment system includes a water quality detection module and a water quality treatment module. The water quality detection module is used to detect water flow quality, and the water quality treatment module is used to treat sewage.

[0033] Technical effects and advantages of the present invention:

[0034] (1) The present invention utilizes an environmentally friendly flotation method and system for flotation recovery of copper and gold ores, implements wastewater treatment and reuse during the flotation process, and ensures that water resources in the slurry can be reused. This not only reduces dependence on new water sources, but also reduces water resource consumption, meeting the requirements of sustainable development. The use of environmentally friendly agents and advanced water treatment technology reduces the pollution of wastewater and waste gas generated during the flotation process to the environment. In particular, by graded treatment of wastewater, it ensures that the discharged water quality meets national environmental protection standards, which helps to protect the ecological environment of the surrounding water bodies.

[0035] (2) The present invention utilizes an environmentally friendly flotation method and system for flotation recovery of copper and gold ores. By optimizing the flotation process and adopting precise reagent ratios and water flow control, the recovery rate of copper and gold ores is effectively improved. This method can extract more valuable metals from low-grade ores and maximize the use of natural resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1This is a flow chart of the environmentally friendly flotation method for flotation recovery of copper and gold ores of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure of the sewage treatment equipment of the present invention;

[0038] Figure 3 This is a schematic diagram of the internal structure of the first sedimentation box on the side of the present invention.

[0039] In the figure: 1. Bracket; 2. Water storage tank; 3. First sedimentation tank; 4. Second sedimentation tank; 5. Drain assembly; 51. Drain pipe; 52. Bellows; 53. Water inlet cover; 54. Mounting plate; 55. Drive cylinder; 6. First treatment tank; 7. Second treatment tank; 8. First discharge pipe; 9. Sewage treatment tank; 10. Second discharge pipe; 11. Filter box. DETAILED DESCRIPTION

[0040] 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.

[0041] The present invention provides Figure 1-3 An environmentally friendly flotation method for flotation recovery of copper and gold ores is shown, comprising the following specific steps:

[0042] S1: Preparation and processing of minerals, and the use of flotation machines to perform roughing and concentrating of the processed minerals to extract gold and copper metals from the minerals;

[0043] S2: Treat the mixture of roughing pulp and pulp in the flotation machine with water, and transport the treated water to the flotation machine to participate in the pulp cleaning, improve the utilization efficiency of water resources, and reduce the pollution of wastewater and exhaust gas generated during the flotation process to the environment;

[0044] S3: The selected foam pulp is subjected to a subsequent recovery process to recover and extract the metal materials in the pulp, thereby obtaining pure gold and copper metal materials;

[0045] S4: treating the slurry after the metal material is extracted and testing the quality of the slurry water treatment, thereby reducing water pollution and improving the quality of sewage treatment;

[0046] S5: Quality inspection of wastewater after treatment, and discharge of treated wastewater for reuse, thereby once again ensuring the quality of wastewater treatment and reducing water resource pollution.

[0047] Furthermore, the preparation and treatment of the minerals in S1 is to crush the minerals to 50-200 meshes, and transport the crushed mineral particles, flotation reagents and water flow to the interior of the flotation machine. The flotation machine mixes and stirs the mineral particles, flotation reagents and water flow to form a slurry mixture. The flotation machine stirs the slurry mixture at a speed of 30-100RPM. When the flotation machine stirs the slurry mixture at a speed of 100RPM, the mineral particles, flotation reagents and water flow are mixed and stirred. When the mineral particles After the flotation agent and water flow are mixed and stirred, the flotation machine stirs the pulp mixture at a speed of 30RPM to ensure that the flotation machine floats the minerals. The flotation stirring rate of the flotation machine is within the range of 30RPM-100RPM, which is a conventional technology and will not be introduced in detail here. When the flotation machine stirs at a speed of 100RPM, it is used to mix and stir the mineral particles, flotation agent and water flow. The flotation agent in S1 is a mixture of a collector, a frother and a depressant. When the pulp mixture is floated, a regulator is also added to adjust the pH value of the pulp mixture.

[0048] The sewage treatment equipment in S2 includes a bracket 1, a water storage tank 2, a first sedimentation tank 3, a second sedimentation tank 4, a first treatment tank 6, a second treatment tank 7, a first discharge pipe 8, a sewage treatment tank 9, a second discharge pipe 10, a filter box 11 and a drainage component 5. The water storage tank 2 is installed on the bracket 1. The water storage tank 2 is used to store the water flow required for the flotation machine to perform mineral flotation. The first sedimentation tank 3 and the second sedimentation tank 4 are both installed on the top of the bracket 1. The first treatment tank 6 and the second treatment tank 7 are installed on the bracket 1. The first discharge pipe 8 is respectively installed at the bottom of the side of the first treatment tank 6 and the second treatment tank 7. One end of the first discharge pipe 8 is connected to the water storage tank 2. The first discharge pipe 8 is installed with a first electromagnetic filter. Valve, so that when the water flow in the first treatment tank 6 and the second treatment tank 7 can be reused, the first solenoid valve is in an open state, and the water flow in the first treatment tank 6 and the second treatment tank 7 can flow to the water storage tank 2 through the first discharge pipe 8 for reuse. When the water flow in the first treatment tank 6 and the second treatment tank 7 cannot be reused, the second solenoid valve is in an open state, and the water flow in the first treatment tank 6 and the second treatment tank 7 is discharged to the sewage treatment tank 9 through the second discharge pipe 10 for treatment. The sewage treatment tank 9 is installed on one side of the bracket 1, and the height of the first sedimentation tank 3 and the second sedimentation tank 4 is higher than the first treatment tank 6 and the second treatment tank 7. The height of the first treatment tank 6 and the second treatment tank 7 is higher. In the sewage treatment tank 9, the sewage treatment tank 9 and the water storage tank 2 are at the same height, the second discharge pipe 10 is respectively installed at the bottom of the first treatment tank 6 and the second treatment tank 7, the second discharge pipe 10 corresponds to the sewage treatment tank 9, the second discharge pipe 10 is installed with a second solenoid valve, the filter box 11 is respectively installed at the top of the inner cavity of the first treatment tank 6 and the second treatment tank 7, the drainage assembly 5 is respectively installed on the first sedimentation tank 3 and the second sedimentation tank 4, the drainage assembly 5 includes a drain pipe 51, the drain pipe 51 is respectively installed at the bottom of one side of the first sedimentation tank 3 and the second sedimentation tank 4, one end of the drain pipe 51 is connected to the bellows 52, and one end of the bellows 52 is fixedly connected to the water inlet cover 53, the first A mounting plate 54 is fixedly connected to the sedimentation box 3 and the second sedimentation box 4, and a driving cylinder 55 is installed on the top of the mounting plate 54. The output end of the driving cylinder 55 is transmission-connected to the water inlet cover 53, so that when the solid-liquid precipitation in the first sedimentation box 3 and the second sedimentation box 4 is completed, the driving cylinder 55 can drive the water inlet cover 53 to descend, so that the floating liquid on the upper layer of the first sedimentation box 3 and the second sedimentation box 4 is discharged through the water inlet cover 53, the bellows 52 and the drain pipe 51, and the sides of the first sedimentation box 3 and the second sedimentation box 4 are provided with cylinder-driven side door panels, so that after the side door panels are opened, the sediment inside the first sedimentation box 3 and the second sedimentation box 4 can be taken out by auxiliary tools such as guide plates and scrapers.

[0049] Furthermore, when the roughing pulp and the pulp mixture in the flotation machine are subjected to water treatment in S2, the roughing pulp mixture and the pulp mixture in the flotation machine are first transported to the first sedimentation tank 3 and the second sedimentation tank 4 respectively, and a coagulant is added to the first sedimentation tank 3 and the second sedimentation tank 4, and the roughing pulp mixture in the first sedimentation tank 3 is stirred to break the bubbles in the roughing pulp mixture. After the bubbles in the first sedimentation tank 3 are broken, the roughing pulp mixture in the first sedimentation tank 3 is allowed to settle for 1-2 hours, so that the flotation pulp in the first sedimentation tank 3 is Solid-liquid precipitation and stratification are carried out, and the upper water flow in the first sedimentation tank 3 is discharged into the first treatment tank 6. A roughing precipitate is obtained in the first sedimentation tank 3 and transported to a flotation machine. Flotation reagents and water are added to the flotation machine to obtain a roughing mixture of ore pulp. After the coagulant added to the roughing precipitate is added to the flotation machine, the flotation machine stirs and breaks up the precipitate, and mixes and dilutes it with water and flotation reagents, so that the added coagulant does not affect the selection of mineral metals. The roughing mixture of ore pulp is floated again to obtain a selected foam ore pulp, thereby improving the purity of the metal material extracted from the mineral.

[0050] Furthermore, the S2 slurry mixture is transported to the second sedimentation tank 4, so that the slurry mixture is precipitated in the second sedimentation tank 4, so that the minerals and water flow are precipitated and stratified in the second sedimentation tank 4, and then the upper water flow in the second sedimentation tank 4 is discharged to the second treatment tank 7, and when the water flow in the first sedimentation tank 3 and the second sedimentation tank 4 is discharged to the first treatment tank 6 and the second treatment tank 7 respectively through the drain pipe 51, the filter box 11 can filter the water flow discharged from the drain pipe 51, thereby reducing the impurities in the water flow entering the first treatment tank 6 and the second treatment tank 7, and the filter mesh at the bottom of the filter box 11 is 50-200 microns, which can filter medium-sized suspended solids in the water flow, and detect the content of dissolved salts, ions, heavy metal ions and organic matter in the sewage in the first treatment tank 6 and the second treatment tank 7. When the water flow in the first treatment tank 6 and the second treatment tank 7 meets the requirements of mineral selection, and the pH value in the first treatment tank 6 and the second treatment tank 7 is detected, acid and alkali solutions are added according to the pH value to filter the first treatment tank 6 and the second treatment tank 7. The pH value of the water in the first treatment tank 6 and the second treatment tank 7 is adjusted to be between 6 and 10, and the water in the first treatment tank 6 and the second treatment tank 7 is transported to the first discharge pipe 8 and discharged into the water storage tank 2. That is, after the flotation machine is used, the content of dissolved salts, ions, heavy metal ions and organic matter in the discharged wastewater does not exceed the standard. The discharged wastewater is pH-adjusted and the particulate matter is coagulated and precipitated before it can be reused, thereby reducing the steps of wastewater treatment, reducing wastewater treatment costs, and improving water resource utilization efficiency. When the flotation machine is used, the water in the water storage tank 2 is refined with the roughing precipitate and the flotation reagent. When the water in the first treatment tank 6 and the second treatment tank 7 does not meet the requirements for mineral selection, the water in the first treatment tank 6 and the second treatment tank 7 is discharged to the sewage treatment tank 9 through the second discharge pipe 10. That is, when the content of dissolved salts, ions, heavy metal ions and organic matter in the wastewater discharged by the flotation machine exceeds the standard and needs further treatment, the wastewater is discharged to the sewage treatment tank 9 for unified sewage treatment.

[0051] Furthermore, when the metal material in the ore pulp is recovered and extracted in S3, the selected flotation foam is first transported to the first sedimentation tank 3 again, and the ore pulp mixture in the flotation machine is transported to the second sedimentation tank 4 for sedimentation treatment again, so that the ore pulp mixture is precipitated in the first sedimentation tank 3, and the upper water flow in the first sedimentation tank 3 is discharged to the first treatment tank 6, and the precipitate in the first treatment tank 6 is filtered to remove the water in the precipitate, and the discharged water is transported to the sewage treatment tank for treatment, and the precipitate is dried to reduce the water content of the roasting, and the dried foam mineral is crushed by a ball mill, and added. The combustion-supporting agent is mixed to obtain a mixture to be roasted, and the mixture to be roasted is placed in a roasting furnace for roasting. After the roasting is completed, the material in the furnace is cooled to room temperature by natural cooling. The roasted material is taken out of the furnace. In order to improve the efficiency of roasting extraction, the molten metal material in the furnace can be directly dripped into water for cooling during cooling to form particles for subsequent processing. The roasted mineral is leached, and the target gold and copper metals are dissolved in the liquid phase using volume. The target metals are separated from the leachate by precipitation, filtration, and extraction to obtain the final pure metal product.

[0052] Furthermore, the water treatment of the slurry in S4 is the treatment of the sewage in the sewage treatment tank 9, including preliminary treatment, physical treatment, chemical treatment, biological treatment and deep treatment. The quality of the slurry water treatment is detected, including the pH value, heavy metal content, suspended matter content, dissolved salt content and organic matter content of the water, so as to ensure the quality of sewage discharge treatment, and according to the water quality detection, it can be treated according to the corresponding treatment steps to reduce the steps of sewage treatment.

[0053] In particular, the preliminary treatment is to first precipitate the wastewater, use gravity to settle large suspended particles, and add alkaline solutions and acidic solutions to the pH value of the sewage to adjust the pH value of the sewage to the neutral range. Biological treatment is to remove organic matter and soluble pollutants in the water through the metabolism of microorganisms, and use biofilm reactors for treatment. Deep treatment includes oxidation treatment and reverse osmosis treatment. Oxidation treatment uses ozone oxidation and chlorine oxidation methods to deeply treat water to remove difficult-to-degrade organic matter and heavy metal ions. Reverse osmosis membrane technology is used for deep treatment to remove dissolved ions and organic matter in the water. Reverse osmosis is the process of using pressure difference to pass water through a semipermeable membrane. The reverse osmosis membrane is a thin film with selective permeability that can allow water molecules to pass through but prevents most dissolved salts and other impurities. In the reverse osmosis process, pollutants such as salts, heavy metals, organic matter, etc. are blocked by the membrane, and the purified water is collected to form treated water.

[0054] Furthermore, the post-treatment quality inspection of wastewater in S5 is to test the water discharged after treatment, testing the pH value, heavy metal content, suspended solids content, dissolved salt content and organic matter content of the water until the water meets the discharge standards and is recycled and discharged. Resource recycling and discharge means that the treated water is reused in flotation and other production processes to reduce water resource consumption and thus improve water resource utilization efficiency. By monitoring the data before and after sewage treatment, the sewage removal rate is calculated using the following formula:

[0055]

[0056] Where E is the removal rate, C i is the concentration of pollutants in the influent, C f The pollutant removal rate is calculated by the sewage removal rate formula. Under the condition that the sewage production and discharge conditions remain unchanged, that is, the mineral flotation extraction method remains unchanged, that is, the discharge sewage pollution quality remains the same, the sewage removal rate can be calculated to obtain the quality of sewage treatment and whether the sewage treatment equipment has any faults, that is, C i The value of remains unchanged, the value of E decreases, and the value of C f If the value increases, the sewage treatment quality will decrease, and the sewage treatment equipment will need to be inspected and maintained.

[0057] The present invention also provides an environmentally friendly flotation system for flotation recovery of copper and gold ores, comprising a mineral flotation module and a sewage treatment system. The mineral flotation module is used to crush the minerals and put them into a flotation machine for flotation. During flotation, the mineral flotation module collects mineral flotation data information through an information collection sensor. The mineral flotation module corresponds to the roughing and cleaning of the minerals in steps S1 to S3. The sewage treatment system is used to treat wastewater generated by the mineral flotation module. The sewage treatment system comprises a water quality detection module and a water quality treatment module. The water quality detection module is used to detect water quality. The water quality treatment module is used to treat sewage. The sewage treatment system corresponds to steps S2 to S5 in the environmentally friendly flotation method for flotation recovery of copper and gold ores.

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An environmentally friendly flotation method for flotation recovery of copper and gold ores, characterized in that: The specific steps include: S1: Preparation and processing of minerals, and use of flotation machines for roughing and concentrating of processed minerals; S2: Use sewage treatment equipment to treat the mixture of roughing pulp and pulp in the flotation machine, and transport the treated water to the flotation machine to participate in the pulp cleaning; S3: Perform subsequent recovery process on the selected foam pulp to recover the metal materials in the pulp; S4: treating the slurry after the metal material is extracted and testing the quality of the water after treatment by the sewage treatment equipment; S5: Quality inspection of wastewater after treatment, and discharge of treated wastewater for use.

2. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 1, characterized in that: The preparation and processing of the minerals in S1 is to crush the minerals, and transport the crushed mineral particles, flotation reagents and water flow to the interior of the flotation machine. The flotation machine mixes and stirs the mineral particles, flotation reagents and water flow to form a slurry mixture. The flotation machine stirs the slurry mixture at a speed of 30-100 RPM. When the flotation machine stirs at a speed of 100 RPM, it is used to mix and stir the mineral particles, flotation reagents and water flow. The flotation reagent is a mixture of a collector, a frother and a depressant.

3. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 2, characterized in that: The sewage treatment equipment in S2 includes: A support (1) and a water tank (2), wherein the water tank (2) is mounted on the support (1), and the water tank (2) is used to store water flow required for a flotation machine to perform mineral flotation; A first sedimentation tank (3) and a second sedimentation tank (4), wherein the first sedimentation tank (3) and the second sedimentation tank (4) are both installed on the top of the bracket (1); A first treatment tank (6) and a second treatment tank (7), wherein the first treatment tank (6) and the second treatment tank (7) are installed on the bracket (1); a first discharge pipe (8), the first discharge pipe (8) being installed at the bottom of the side of the first treatment tank (6) and the second treatment tank (7), one end of the first discharge pipe (8) being connected to the water storage tank (2), and a first solenoid valve being installed on the first discharge pipe (8); A sewage treatment tank (9), wherein the sewage treatment tank (9) is installed on one side of the bracket (1); a second discharge pipe (10), the second discharge pipe (10) being installed at the bottom of one side of the first treatment tank (6) and the second treatment tank (7), the second discharge pipe (10) corresponding to the sewage treatment tank (9), and a second solenoid valve being installed on the second discharge pipe (10); A filter box (11), the filter box (11) being installed at the top of the inner cavity of the first treatment tank (6) and the second treatment tank (7); A drainage assembly (5) is provided. The drainage assembly (5) is respectively installed on the first sedimentation tank (3) and the second sedimentation tank (4). The drainage assembly (5) comprises a drainage pipe (51). The drainage pipe (51) is respectively installed on the bottom of one side of the first sedimentation tank (3) and the second sedimentation tank (4). One end of the drainage pipe (51) is connected to a bellows (52). One end of the bellows (52) is fixedly connected to a water inlet cover (53). The first sedimentation tank (3) and the second sedimentation tank (4) are fixedly connected to a mounting plate (54). A driving cylinder (55) is installed on the top of the mounting plate (54). The output end of the driving cylinder (55) is transmission-connected to the water inlet cover (53).

4. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 3, characterized in that: When the roughing pulp and the pulp mixture in the flotation machine are subjected to water treatment in S2, the roughing pulp mixture and the pulp mixture in the flotation machine are first transported to a first sedimentation tank (3) and a second sedimentation tank (4) respectively, and a coagulant is added to the first sedimentation tank (3) and the second sedimentation tank (4), and the roughing pulp mixture in the first sedimentation tank (3) is stirred to break bubbles in the roughing pulp mixture. After the bubbles in the first sedimentation tank (3) are broken, the roughing pulp mixture in the first sedimentation tank (3) is allowed to settle, and the upper water flow of the first sedimentation tank (3) is discharged into the first treatment tank (6). A roughing precipitate is obtained in the first sedimentation tank (3), and the precipitate is transported to the flotation machine. A flotation agent and water flow are added to the flotation machine to obtain a pulp-roughing mixture. The pulp-roughing mixture is floated again to obtain a selected foam pulp.

5. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 4, characterized in that: The S2 slurry mixture is transported to the second sedimentation tank (4), and the slurry mixture is precipitated in the second sedimentation tank (4). Then, the upper water flow in the second sedimentation tank (4) is discharged to the second treatment tank (7), and the contents of dissolved salts, ions, heavy metal ions and organic matter in the sewage in the first treatment tank (6) and the second treatment tank (7) are detected. When the water flow in the first treatment tank (6) and the second treatment tank (7) meets the requirements of mineral selection, the pH value in the first treatment tank (6) and the second treatment tank (7) is detected, and an acid-base solution is added according to the pH value to treat the first treatment tank (6). ) and the second treatment tank (7) to adjust the pH value of the water flow so that the pH value of the water flow is between 6 and 10, and the water flow in the first treatment tank (6) and the second treatment tank (7) is transported through the first discharge pipe (8) and discharged into the water storage tank (2) to be used by the flotation machine, so that the water flow in the water storage tank (2) is finely selected with the rough sediment and the flotation reagent. When the water flow in the first treatment tank (6) and the second treatment tank (7) does not meet the requirements of mineral selection, the water flow in the first treatment tank (6) and the second treatment tank (7) is discharged into the sewage treatment tank (9) through the second discharge pipe (10).

6. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 5, characterized in that: When the metal material in the ore pulp is recovered and extracted in S3, the selected flotation foam is first transported to the first sedimentation tank (3) again, and the ore pulp mixture in the flotation machine is transported to the second sedimentation tank (4) for sedimentation treatment again, so that the ore pulp mixture is precipitated in the first sedimentation tank (3), and the upper water flow in the first sedimentation tank (3) is discharged to the first treatment tank (6), and the sediment in the first treatment tank (6) is filtered to remove water in the sediment, and the discharged water is transported to the sewage treatment tank for treatment, and the sediment is The process includes drying the minerals to reduce the moisture during roasting, crushing the dried foamed minerals with a ball mill, adding a combustion aid and mixing them to obtain a mixture to be roasted, placing the mixture to be roasted in a roasting furnace for roasting, and cooling the materials in the furnace to room temperature by natural cooling after roasting. The roasted materials are taken out of the furnace, and the roasted minerals are leached. The target gold and copper metals are dissolved in the liquid phase using a volumetric method, and the target metals are separated from the leachate by precipitation, filtration and extraction to obtain the final pure metal product.

7. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 6, characterized in that: The water treatment of the ore pulp in S4 is to treat the sewage in the sewage treatment tank (9), including preliminary treatment, physical treatment, chemical treatment, biological treatment and deep treatment. The quality of the ore pulp water treatment is tested including the pH value of the water, the content of heavy metals, the content of suspended matter, the content of dissolved salts and the content of organic matter.

8. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 7, characterized in that: The preliminary treatment is to first precipitate the wastewater, use gravity to settle large particles of suspended matter, and use a grid to preliminarily filter the wastewater before the wastewater is precipitated. The physical treatment is to further remove suspended matter and soluble pollutants in the water through sand filtration and activated carbon filtration, and use a flotation device to introduce fine bubbles into the wastewater so that the suspended matter combines with the bubbles to form scum and separate it from the water. The chemical treatment is to add chemical agents for coagulation and precipitation according to the composition of the wastewater. The chemical agents include coagulants and flocculants. Coagulants help aggregate small particles to form large particles for precipitation. Flocculants further promote the aggregation and sedimentation of particles, and add alkaline solutions and acidic solutions to the pH value of the sewage to adjust the pH value of the sewage to a neutral range. The biological treatment is to remove organic matter and soluble pollutants in the water through the metabolism of microorganisms, and use a biofilm reactor for treatment. The deep treatment includes oxidation treatment and reverse osmosis treatment. The oxidation treatment uses ozone oxidation and chlorine oxidation methods to deeply treat the water to remove refractory organic matter and heavy metal ions. The reverse osmosis membrane technology is used for deep treatment to remove dissolved ions and organic matter in the water.

9. The environmentally friendly flotation method for flotation recovery of copper and gold ores according to claim 1, characterized in that: The post-treatment quality inspection of wastewater in S5 is to test the water flow discharged after treatment, and test the pH value, heavy metal content, suspended solids content, dissolved salt content and organic matter content of the water until the water flow meets the discharge standards, and then carry out resource recovery and discharge. The resource recovery and discharge is to reuse the treated water in flotation and other production processes to reduce the consumption of water resources. By testing the data before and after the sewage treatment, the sewage removal rate is calculated by the following formula: Where E is the removal rate, C i is the concentration of pollutants in the influent, C f is the concentration of pollutants in the effluent.

10. An environmentally friendly flotation system for flotation recovery of copper and gold ores, implementing the environmentally friendly flotation method for flotation recovery of copper and gold ores according to any one of claims 1 to 9, characterized in that: include: A mineral flotation module is used to crush the minerals and put them into a flotation machine for flotation. During flotation, the mineral flotation module collects data information of the mineral flotation through an information collection sensor; A sewage treatment system is used to treat wastewater generated by the mineral flotation module. The sewage treatment system includes a water quality detection module and a water quality treatment module. The water quality detection module is used to detect water flow quality, and the water quality treatment module is used to treat sewage.

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