Preparation process of multifunctional rare and precious metal flotation reagent

Abstract

The present application relates to the technical field of mineral processing, and particularly relates to a preparation process of a multifunctional rare and precious metal flotation reagent, which comprises the following steps: S1: selecting sodium sulfide, polymeric ammonium chloride, a surfactant, a metal ion complexing agent, a stabilizer and water according to preset proportions; S2: respectively pretreating the selected sodium sulfide and polymeric ammonium chloride; S3: mixing and reacting the pretreated sodium sulfide, polymeric ammonium chloride and metal ion complexing agent in water; S4: adding the surfactant to the primary mixture; S5: performing secondary reaction treatment on the mixture A; S6: performing stabilization treatment to form a mixture B; and S7: using ultrasonic technology to treat the mixture B. Through accurate control of chemical components and optimization of operation steps, the present application significantly improves the flotation efficiency and selectivity of rare and precious metals, and also achieves remarkable effects in reducing environmental impact and production cost.

Description

Technical Field

[0001] This invention relates to the field of mineral processing technology, and in particular to a process for preparing a multifunctional rare and precious metal flotation reagent. Background Technology

[0002] In the field of rare and precious metal extraction and processing, flotation technology is a commonly used method for separating and purifying metal ores. This process relies on effective flotation reagents, the performance of which directly affects flotation efficiency and product quality. Traditional flotation reagents usually face a series of challenges, such as insufficient selectivity, significant environmental impact, and high cost. These challenges are particularly prominent when processing rare and precious metals, as the complexity and variability of rare and precious metal ores require more efficient and targeted flotation reagents.

[0003] Currently, there is still considerable room for improvement in flotation reagents on the market in terms of increasing metal recovery rate, reducing environmental impact, and cost-effectiveness. On the one hand, traditional reagents are often unsatisfactory in terms of selectivity and flotation efficiency for rare and precious metals; on the other hand, the preparation process of these reagents is often complex and lacks environmental friendliness.

[0004] Therefore, developing a new type of flotation reagent that can effectively improve the recovery rate and purity of rare and precious metals while reducing environmental impact and costs during the preparation process is a technical challenge that urgently needs to be solved in this field. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides a process for preparing multifunctional rare and precious metal flotation reagents.

[0006] A process for preparing a multifunctional rare and precious metal flotation reagent includes the following steps:

[0007] S1: Select sodium sulfide, polyammonium chloride, surfactant, metal ion complexing agent, stabilizer and water according to the preset ratio;

[0008] S2: Pretreatment is performed on the selected sodium sulfide and polyammonium chloride respectively. Specifically, sodium sulfide is purified and polyammonium chloride is micronized.

[0009] S3: Under preset temperature and pH conditions, pretreated sodium sulfide, polyammonium chloride and metal ion complexing agent are mixed and reacted in water to form a primary mixture;

[0010] S4: Add surfactant to the primary mixture and stir to form mixture A;

[0011] S5: Under preset conditions, mixture A undergoes a secondary reaction treatment;

[0012] S6: Add a stabilizer to mixture A after the secondary reaction for stabilization treatment to form mixture B;

[0013] S7: Use ultrasonic technology to process mixture B to achieve nanoscale uniform dispersion of the reagent in water, forming the final flotation reagent product.

[0014] Furthermore, the preset proportions in S1 are: sodium sulfide 10-55%, polyammonium chloride 20-30%, surfactant 10-20%, metal ion complexing agent 5-15%, stabilizer 2-8%, and water 8-17%.

[0015] Furthermore, the surfactant is sodium dodecyl sulfate or hexadecyltrimethylammonium bromide, and the stabilizer is polyvinyl alcohol or sodium polyacrylate.

[0016] Furthermore, the purification process of sodium sulfide in step S2 specifically includes:

[0017] S21: Dissolve the selected sodium sulfide in water to form a sodium sulfide solution, wherein the concentration of sodium sulfide is controlled at 50-55 g / L;

[0018] S22: Heat the dissolved sodium sulfide solution to 70-75℃ and stir continuously at this temperature for 45 minutes;

[0019] S23: Use a filter press to filter the heated sodium sulfide solution to remove precipitated impurities. The specific filtration pressure is set to 1.5-2.0 bar.

[0020] S24: Collect the filtered sodium sulfide solution and allow it to cool naturally to 20-25°C at room temperature for later use.

[0021] Furthermore, the micronization treatment of polyammonium chloride in step S2 includes:

[0022] S25: First, place the selected polyammonium chloride in a mechanical grinder and grind it for 1-3 hours to obtain polyammonium chloride powder with a particle size of 70-100 micrometers;

[0023] S26: Dry the ground polyammonium chloride particles in a dryer at 50-60℃ for 4-6 hours.

[0024] Furthermore, S3 specifically includes:

[0025] S31: Prepare a mixing reactor with temperature and pH control capabilities, and set the temperature of the mixing reactor to 45-55℃, and adjust the pH of the reaction mixture to 9-11;

[0026] S32: Add the pretreated sodium sulfide solution, polyammonium chloride particles, metal ion complexing agent and water to the mixing reactor according to the preset ratio;

[0027] S33: Turn on the stirring device to ensure that the raw materials are fully mixed in the reactor. The stirring speed is controlled at 200-300 rpm. Continue stirring and reacting for 30-45 minutes to form a primary mixture.

[0028] S34: After the reaction is complete, let the primary mixture stand in the reactor for 10-15 minutes to stabilize the primary mixture.

[0029] Furthermore, S4 specifically includes:

[0030] S41: Select a reaction vessel equipped with a stirring device and add the primary mixture to the reaction vessel;

[0031] S42: Gradually add surfactant to the reaction vessel;

[0032] S43: After adding the surfactant, turn on the stirring device, set the stirring speed to 250-350 rpm, and continue stirring for 20-30 minutes to gradually transform the mixture into mixture A.

[0033] Furthermore, S5 specifically includes:

[0034] S51: Select a secondary reaction vessel with temperature control and stirring functions, and set the temperature of the secondary reaction vessel to 60-70℃;

[0035] S52: Adjust the pH of mixture A to 8-10;

[0036] S53: Transfer mixture A to a secondary reaction vessel and turn on the stirring device, adjusting the stirring speed to 200-250 rpm;

[0037] S54: Under the above conditions, mixture A is continuously stirred to carry out a secondary reaction, and the reaction time is specifically 40-50 minutes.

[0038] S55: After the reaction is complete, turn off the stirring device and let mixture A stand in the reaction vessel for 15-20 minutes to complete the reaction process.

[0039] Furthermore, S6 specifically includes:

[0040] S61: Add the selected stabilizer to mixture A after the secondary reaction;

[0041] S62: After adding the stabilizer, continue mixing using a stirring device, maintaining the stirring speed at 100-150 rpm, and continue stirring mixture A for 15-20 minutes to form mixture B.

[0042] Furthermore, S7 specifically includes:

[0043] S71: Select an ultrasonic processing device with adjustable frequency and power, and set the frequency of the ultrasonic device to 20-40kHz and adjust the ultrasonic power to 50-70% of the maximum output power.

[0044] S72: Place mixture B in an ultrasonic treatment device and apply continuous ultrasonic treatment to mixture B for a treatment time of 30-45 minutes.

[0045] The beneficial effects of this invention are:

[0046] This invention significantly improves the flotation efficiency and selectivity of reagents for rare and precious metals by precisely controlling the chemical composition and operating steps. In particular, by adding specific metal ion complexing agents and optimizing the use of surfactants, the target metals can be separated more effectively, thereby improving the metal recovery rate and purity. This is especially important when processing complex or low-grade ores, and can significantly improve economic benefits.

[0047] This invention reduces environmental impact by using environmentally friendly raw materials and optimized preparation steps. The chemicals used are safer and easier to handle, reducing the risk of potential environmental pollution. At the same time, by simplifying the preparation process and using lower-cost raw materials, it also achieves significant results in reducing production costs. This makes the invention more attractive in practical applications, especially for mining companies under pressure from resources and the environment.

[0048] This invention achieves nanoscale dispersion of reagents using ultrasonic technology. This step not only improves the physical properties of the reagents but also enhances their performance in the flotation process. Furthermore, by precisely controlling the reaction conditions and raw material ratios, the invention improves reagent performance while ensuring high efficiency and repeatability of the preparation process. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the preparation process of the multifunctional rare and precious metal flotation reagent according to an embodiment of the present invention. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0052] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] Example 1

[0054] like Figure 1 As shown, a process for preparing a multifunctional rare and precious metal flotation reagent includes the following steps:

[0055] S1: Select sodium sulfide, polyammonium chloride, surfactant, metal ion complexing agent, stabilizer and water according to the preset ratio;

[0056] S2: The selected sodium sulfide and polyammonium chloride were pretreated respectively. Specifically, the sodium sulfide was purified and the polyammonium chloride was micronized to optimize its performance in subsequent reactions.

[0057] S3: Under preset temperature and pH conditions, pretreated sodium sulfide, polyammonium chloride and metal ion complexing agent are mixed and reacted in water to form a primary mixture;

[0058] S4: Add surfactant to the primary mixture and stir to form mixture A;

[0059] S5: Under preset conditions, mixture A undergoes a secondary reaction treatment;

[0060] S6: Add a stabilizer to mixture A after the secondary reaction for stabilization treatment to form mixture B;

[0061] S7: Use ultrasonic technology to process mixture B to achieve nanoscale uniform dispersion of the reagent in water, forming the final flotation reagent product.

[0062] The preset proportions in S1 are: sodium sulfide 35%, polyammonium chloride 25%, surfactant 15%, metal ion complexing agent 10%, stabilizer 5%, and water 10%.

[0063] The surfactant is sodium dodecyl sulfate, and the stabilizer is polyvinyl alcohol.

[0064] The purification process for sodium sulfide in S2 specifically includes:

[0065] S21: Dissolve the selected sodium sulfide in water to form a sodium sulfide solution, wherein the concentration of sodium sulfide is controlled at 52 g / L;

[0066] S22: Heat the dissolved sodium sulfide solution to 72°C and stir continuously at this temperature for 45 minutes to promote the precipitation of impurities;

[0067] S23: Use a filter press to filter the heated sodium sulfide solution to remove precipitated impurities. The specific filtration pressure is set to 1.75 bar.

[0068] S24: Collect the filtered sodium sulfide solution and allow it to cool naturally to 22°C at room temperature for later use.

[0069] The micronization process of polyammonium chloride in S2 includes:

[0070] S25: First, place the selected polyammonium chloride in a mechanical grinder and grind it for 1.5 hours to obtain polyammonium chloride powder with a particle size of 75 micrometers;

[0071] S26: Dry the ground polyammonium chloride particles in a dryer at 55°C for 5 hours to ensure that the particles are dry and free of moisture.

[0072] S3 specifically includes:

[0073] S31: Prepare a mixing reactor with temperature and pH control capabilities, set the temperature of the mixing reactor to 50°C, and adjust the pH of the reaction mixture to 10 to facilitate the reaction.

[0074] S32: Add the pretreated sodium sulfide solution, polyammonium chloride particles, metal ion complexing agent and water to the mixing reactor according to the preset ratio;

[0075] S33: Turn on the stirring device to ensure that the raw materials are fully mixed in the reactor. The stirring speed is controlled at 250 rpm, and the stirring reaction is continued for 40 minutes to form a primary mixture.

[0076] S34: After the reaction is complete, let the primary mixture stand in the reactor for 12 minutes to stabilize it.

[0077] S4 specifically includes:

[0078] S41: Select a reaction vessel equipped with a stirring device and add the primary mixture to the reaction vessel;

[0079] S42: Gradually add surfactant to the reaction vessel;

[0080] S43: After adding the surfactant, turn on the stirring device, set the stirring speed to 300 rpm, and continue stirring for 25 minutes to gradually transform the mixture into mixture A.

[0081] S5 specifically includes:

[0082] S51: Select a secondary reaction vessel with temperature control and stirring functions, and set the temperature of the secondary reaction vessel to 65℃;

[0083] S52: Adjust the pH of mixture A to 9;

[0084] S53: Transfer mixture A to a secondary reaction vessel and turn on the stirring device, adjusting the stirring speed to 225 rpm;

[0085] S54: Under the above conditions, mixture A is continuously stirred to carry out a secondary reaction, and the reaction time is specifically 45 minutes.

[0086] S55: After the reaction is complete, turn off the stirring device and let mixture A stand in the reaction vessel for 18 minutes to complete the reaction process.

[0087] S6 specifically includes:

[0088] S61: Add the selected stabilizer to mixture A after the secondary reaction;

[0089] S62: After adding the stabilizer, continue mixing using a stirring device at a speed of 125 rpm for 18 minutes to ensure that the stabilizer is fully incorporated into the mixture to form mixture B.

[0090] S7 specifically includes:

[0091] S71: Select an ultrasonic processing device with adjustable frequency and power, set the frequency of the ultrasonic device to 30kHz, and adjust the ultrasonic power to 60% of the maximum output power.

[0092] S72: Place mixture B in an ultrasonic treatment device and apply continuous ultrasonic treatment to mixture B for a treatment time of 38 minutes. Collect the ultrasonically treated mixture B, which is the final flotation reagent product.

[0093] Example 2

[0094] S1: Raw material preparation, including 55% sodium sulfide, 20% polyammonium chloride, 10% sodium hexadecyltrimethylammonium bromide (surfactant), 5% metal ion complexing agent, 2% sodium polyacrylate (stabilizer), and 8% water;

[0095] S2: Sodium sulfide is dissolved in water at a concentration of 50 g / L, heated to 70°C, stirred continuously for 45 minutes, filtered under a pressure of 1.5 bar, and then naturally cooled to 20°C at room temperature; polyammonium chloride is ground in a mechanical grinder for 1 hour to obtain powder with a particle size of 70 micrometers, and then dried at 50°C for 4 hours.

[0096] S3: Under the conditions of temperature 45℃ and pH value 9, the pretreated sodium sulfide solution, polyammonium chloride particles, metal ion complexing agent and water are added to the mixing reactor in a preset ratio, stirred at a speed of 200 rpm for 30 minutes, and after forming a primary mixture, it is allowed to stand for 10 minutes.

[0097] S4: Transfer the primary mixture to another reaction vessel, gradually add the surfactant, and then stir at 250 rpm for 20 minutes to form mixture A;

[0098] S5: Secondary reaction treatment. Adjust the pH of mixture A to 8 at 60℃, transfer it to a secondary reaction vessel, and stir at 200 rpm for 40 minutes. After the reaction is complete, let mixture A stand for 15 minutes.

[0099] S6: Stabilization treatment: Add sodium polyacrylate to mixture A after the secondary reaction, and stir at 100 rpm for 15 minutes to form mixture B;

[0100] S7: Use an ultrasonic treatment device set to 20kHz frequency and 50% maximum output power to treat mixture B for 30 minutes to achieve nanoscale uniform dispersion of the reagent in water, and finally obtain the flotation reagent product.

[0101] Example 3

[0102] S1: Raw material preparation, including 10% sodium sulfide, 30% polyammonium chloride, 20% sodium dodecyl sulfate (surfactant), 15% metal ion complexing agent, 8% polyvinyl alcohol (stabilizer), and 17% water;

[0103] S2: Sodium sulfide is dissolved in water at a concentration of 55 g / L, heated to 75°C, stirred continuously for 45 minutes, filtered under a pressure of 2.0 bar, and then naturally cooled to 25°C at room temperature; polyammonium chloride is ground in a mechanical grinder for 3 hours to obtain powder with a particle size of 100 micrometers, and then dried at 60°C for 6 hours.

[0104] S3: Under the conditions of temperature 55℃ and pH value 11, the pretreated sodium sulfide solution, polyammonium chloride particles, metal ion complexing agent and water are added to the mixing reactor in a preset ratio, stirred at 300 rpm for 45 minutes, and then allowed to stand for 15 minutes after forming a primary mixture.

[0105] S4: Transfer the primary mixture to another reaction vessel, gradually add the surfactant, and then stir at 350 rpm for 30 minutes to form mixture A;

[0106] S5: Secondary reaction treatment. Adjust the pH of mixture A to 10 at 70℃, transfer it to a secondary reaction vessel, and stir at 250 rpm for 50 minutes. After the reaction is complete, let mixture A stand for 20 minutes.

[0107] S6: Stabilization treatment: Polyvinyl alcohol is added to mixture A after the secondary reaction and stirred at 150 rpm for 20 minutes to form mixture B.

[0108] S7: Use an ultrasonic treatment device set to 40kHz frequency and 70% maximum output power to treat mixture B for 45 minutes to achieve nanoscale uniform dispersion of the reagent in water, and finally obtain the flotation reagent product.

[0109] Table 1 Comparison of Finished Product Parameters

[0110] Flotation efficiency (%) 92 86 83 Stability (hours) 48 36 30 Nanoparticle uniformity high middle Low Chemical consumption (g / ton) 500 550 600 Metal recovery rate (%) 95 90 88 Drug cost (RMB / ton) 1000 1100 1200

[0111] As can be seen from Table 1 above, Example 1 exhibits the highest flotation efficiency, reaching 92%, indicating that this scheme more effectively floats rare and precious metals while reducing metal loss. The reagents in Example 1 have longer stability, remaining effective for 48 hours, which reduces the need for frequent reagent replacement. Example 1 demonstrates high uniformity in nanoparticles, meaning the reagent is more evenly dispersed in water, improving flotation efficiency and consistency. Example 1 has the lowest reagent consumption, reducing production costs and mitigating environmental impact. Example 1 has the highest metal recovery rate, reaching 95%, which not only improves metal recovery efficiency but also enhances the economic benefits of the entire flotation process. Although the reagent cost of Example 1 is slightly higher, considering its high efficiency and low consumption, the overall cost-effectiveness remains optimal.

[0112] Table 2 Comparison of other performance aspects

[0113] Dissolution rate (minutes) 15 20 25 pH stability (hours) 72 60 55 Environmental Impact Rating Low middle high process complexity Low middle high Temperature resistance (°C) 100 95 90 Ease of use rating high middle Low

[0114] As can be seen from Table 2 above, the reagent in Example 1 has the fastest dissolution rate, requiring only 15 minutes, which helps to quickly start the flotation process and save time. The reagent in Example 1 has the highest pH stability, reaching 72 hours, indicating that the reagent can remain effective over a long period of time, reducing the need for frequent pH adjustments. The environmental impact rating of Example 1 is low, indicating that it has the least impact on the environment during use, which is particularly important considering the current emphasis on environmental protection. The process flow of Example 1 is relatively simple, easy to operate and maintain, reducing potential errors and costs in production. The reagent in Example 1 has higher temperature resistance, remaining stable in environments up to 100°C, and is suitable for a wider range of flotation conditions. Example 1 has a high rating in terms of ease of operation, indicating that it is more user-friendly from preparation to actual application, reducing the training costs and operational difficulties for operators.

[0115] Based on the above indicators, Example 1 not only performs well in terms of flotation efficiency and stability, but also has significant advantages in terms of environmental friendliness, process simplicity and ease of operation. Therefore, Example 1 is the best preparation scheme for multifunctional rare and precious metal flotation reagents.

[0116] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A process for preparing a multifunctional rare and precious metal flotation reagent, characterized in that, Includes the following steps: S1: Select sodium sulfide, polyammonium chloride, surfactant, metal ion complexing agent, stabilizer and water according to the preset ratio; S2: Pretreatment is performed on the selected sodium sulfide and polyammonium chloride respectively. Specifically, sodium sulfide is purified and polyammonium chloride is micronized. S3: Under preset temperature and pH conditions, pretreated sodium sulfide, polyammonium chloride and metal ion complexing agent are mixed and reacted in water to form a primary mixture; S4: Add a surfactant to the primary mixture and stir to form mixture A; the surfactant is sodium dodecyl sulfate or hexadecyltrimethylammonium bromide, and the stabilizer is polyvinyl alcohol or sodium polyacrylate; S5: Under preset conditions, mixture A undergoes a secondary reaction treatment; S6: Add a stabilizer to mixture A after the secondary reaction for stabilization treatment to form mixture B; S7: Use ultrasonic technology to process mixture B to achieve nanoscale uniform dispersion of the reagent in water, forming the final flotation reagent product.

2. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 1, characterized in that, The preset proportions in S1 are: sodium sulfide 10-55%, polyammonium chloride 20-30%, surfactant 10-20%, metal ion complexing agent 5-15%, stabilizer 2-8%, and water 8-17%.

3. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 2, characterized in that, The purification process of sodium sulfide in S2 specifically includes: S21: Dissolve the selected sodium sulfide in water to form a sodium sulfide solution, wherein the concentration of sodium sulfide is controlled at 50-55 g / L; S22: Heat the dissolved sodium sulfide solution to 70-75°C and stir continuously at this temperature for 45 minutes; S23: Use a filter press to filter the heated sodium sulfide solution to remove precipitated impurities. The specific filtration pressure is set to 1.5-2.0 bar. S24: Collect the filtered sodium sulfide solution and allow it to cool naturally to 20-25°C at room temperature for later use.

4. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 3, characterized in that, The micronization treatment of polyammonium chloride in S2 includes: S25: First, place the selected polyammonium chloride in a mechanical grinder and grind it for 1-3 hours to obtain polyammonium chloride powder with a particle size of 70-100 micrometers; S26: Dry the ground polyammonium chloride particles in a dryer at 50-60°C for 4-6 hours.

5. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 4, characterized in that, S3 specifically includes: S31: Prepare a mixing reactor with temperature and pH control capabilities, and set the temperature of the mixing reactor to 45-55°C and adjust the pH of the reaction mixture to 9-11; S32: Add the pretreated sodium sulfide solution, polyammonium chloride particles, metal ion complexing agent and water to the mixing reactor according to the preset ratio; S33: Turn on the stirring device to ensure that the raw materials are fully mixed in the reactor. The stirring speed is controlled at 200-300 rpm. Continue stirring and reacting for 30-45 minutes to form a primary mixture. S34: After the reaction is complete, let the primary mixture stand in the reactor for 10-15 minutes to stabilize the primary mixture.

6. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 5, characterized in that, S4 specifically includes: S41: Select a reaction vessel equipped with a stirring device and add the primary mixture to the reaction vessel; S42: Gradually add surfactant to the reaction vessel; S43: After adding the surfactant, turn on the stirring device, set the stirring speed to 250-350 rpm, and continue stirring for 20-30 minutes to gradually transform the mixture into mixture A.

7. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 6, characterized in that, S5 specifically includes: S51: Select a secondary reaction vessel with temperature control and stirring functions, and set the temperature of the secondary reaction vessel to 60-70°C; S52: Adjust the pH of mixture A to 8-10; S53: Transfer mixture A to a secondary reaction vessel and turn on the stirring device, adjusting the stirring speed to 200-250 rpm; S54: Under the above conditions, mixture A is continuously stirred to carry out a secondary reaction, and the reaction time is specifically 40-50 minutes. S55: After the reaction is complete, turn off the stirring device and let mixture A stand in the reaction vessel for 15-20 minutes to complete the reaction process.

8. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 7, characterized in that, S6 specifically includes: S61: Add the selected stabilizer to mixture A after the secondary reaction; S62: After adding the stabilizer, continue mixing using a stirring device, maintaining the stirring speed at 100-150 rpm, and continue stirring mixture A for 15-20 minutes to form mixture B.

9. The preparation process of a multifunctional rare and precious metal flotation reagent according to claim 8, characterized in that, Specifically, S7 includes: S71: Select an ultrasonic processing device with adjustable frequency and power, and set the frequency of the ultrasonic device to 20-40 kHz and adjust the ultrasonic power to 50-70% of the maximum output power. S72: Place mixture B in an ultrasonic treatment device and apply continuous ultrasonic treatment to mixture B for a treatment time of 30-45 minutes.

Images