A pyrrhotite collector

Abstract

The application relates to the field of mineral processing, and discloses a pyrrhotite collector, which comprises a mercaptan group collector, 5-30 parts, an amide group collector, 5-30 parts, a surfactant, 2-10 parts, an organic solvent, 20-50 parts, water, 20-60 parts, a collector aid, 1-15 parts, and a pH regulator, 1-10 parts. The pyrrhotite is efficiently collected by introducing the mercaptan group collector and the amide group collector into the collector. The collector molecules have high affinity with the active sites on the surface of the pyrrhotite, so that the collection efficiency of the mineral is greatly improved, and the technical purpose of significantly improving the ore recovery rate is achieved. Meanwhile, the amphiphilic molecules are used as the surfactant, including an anionic surfactant and a cationic surfactant. The surfactants can effectively adjust the properties of the mineral surface, and the selective separation of the pyrrhotite and other impurity minerals is realized.

Description

Technical Field

[0001] This invention relates to the field of mineral processing technology, specifically to a pyrrhotite collector. Background Technology

[0002] Pyrrhotite is an iron-bearing sulfide mineral widely found in various mineral deposits and is often used as an important raw material for extracting elements such as iron and sulfur. However, due to the complex forms in which pyrrhotite exists in ores, it is usually accompanied by other impurity minerals, such as pyrite and quartz. Therefore, effective collectors are needed in mineral processing to achieve efficient and selective separation of pyrrhotite. However, existing collector technologies have shortcomings in several aspects.

[0003] The shortcomings of existing technology:

[0004] Low collection efficiency: Existing pyrrhotite collectors have significant shortcomings in collection efficiency, resulting in low mineral recovery rates. Traditional collectors lack sufficient binding force with pyrrhotite, failing to fully capture active sites on the mineral surface, which affects the mineral flotation effect. Inefficient collection not only wastes resources but also reduces production efficiency.

[0005] Poor selectivity: Currently used collectors exhibit poor selectivity, making it difficult to effectively distinguish pyrrhotite from other associated minerals. This lack of selectivity leads to the collection of impurity minerals along with the pyrrhotite concentrate during flotation, reducing its purity. This poor selectivity complicates subsequent purification processes and increases separation costs.

[0006] High dosage: Traditional collectors require large dosages to achieve the desired effect. This not only increases production costs but also negatively impacts subsequent tailings treatment. Excessive use of chemical collectors can also cause environmental pollution, affecting the ecological environment of the mining area. High dosages of collectors can also increase equipment wear and maintenance costs.

[0007] Significant environmental impact: Many existing collectors contain harmful chemicals that can easily pollute water and soil during use. With increasingly stringent environmental regulations, finding low-toxicity, environmentally friendly collectors has become a crucial task for the mineral processing industry. Traditional collectors may release harmful substances during use and processing, posing a threat to surrounding ecosystems and human health.

[0008] Complex Processes: The preparation and application of traditional collectors are relatively complex, requiring multiple reaction steps and strict condition control. This increases operational difficulty and cost, hindering large-scale industrial application. The complex process not only reduces production efficiency but may also lead to unstable process parameters, affecting product quality consistency.

[0009] Therefore, this invention proposes a pyrrhotite collector to address the shortcomings of existing technologies. Summary of the Invention

[0010] To address the shortcomings of existing technologies, this invention provides a pyrrhotite collector, aiming to overcome the deficiencies of current pyrrhotite collectors, such as low collection efficiency, poor selectivity, large dosage, significant environmental impact, and complex processes. This collector, through improved component formulation and preparation process, achieves efficient and selective collection of pyrrhotite while reducing dosage and environmental pollution, simplifying the preparation process, and making it suitable for large-scale industrial applications.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a pyrrhotite collector, wherein the collector comprises the following components in parts by weight:

[0012] Thiol-based collector: 5-30 parts;

[0013] Amide-based collector: 5-30 parts;

[0014] Surfactant: 2-10 parts;

[0015] Organic solvent: 20-50 parts;

[0016] Water: 20-60 parts;

[0017] Trapping aid: 1-15 parts;

[0018] pH adjuster: 1-10 parts.

[0019] Preferably, the thiol-based collector has the specific structural formula R-SH, where R is a C8-C18 alkyl or aryl group.

[0020] Preferably, the amide-based collector has the specific structural formula R-CONH2, where R is a C8-C18 alkyl or aryl group.

[0021] Preferably, the surfactant is an amphiphilic molecule, including one or more of anionic surfactants and cationic surfactants, wherein the surfactant includes sodium dodecyl sulfate and quaternary ammonium salt compounds.

[0022] Preferably, the organic solvent is an alcohol solvent, which is one or more of ethanol, n-butanol, and isopropanol.

[0023] Preferably, the trapping agent is a fatty acid salt or xanthate, and the trapping agent includes sodium dodecyl sulfate or ethoxylated alkylphenol.

[0024] Preferably, the pH adjuster is one or more of sodium carbonate, sodium bicarbonate, or sodium hydroxide.

[0025] Preferably, a method for preparing a novel pyrrhotite collector includes the following steps:

[0026] (1) Dissolve the thiol-based collector and the amide-based collector in an organic solvent according to the specified ratio, and stir until homogeneous;

[0027] (2) Add surfactant and trapping agent, and continue stirring until dissolved;

[0028] (3) Gradually add water and pH adjuster to the mixture obtained in step (2), stir evenly, and obtain the collector.

[0029] Preferably, the stirring temperature in step (1) is 20-40℃ and the stirring time is 10-30 minutes; the stirring temperature in step (2) is 20-30℃ and the stirring time is 5-20 minutes.

[0030] Preferably, the water is added at a rate of 5-10 ml per minute in step (3) and kept evenly dispersed during stirring; the pH value is controlled between 7 and 9 during the addition of the pH adjuster in step (3) to optimize the effect of the collector.

[0031] Preferably, in step (1), the organic solvent is added in the following order: first ethanol, then n-butanol and isopropanol, and the mixture is stirred until dissolved after each addition.

[0032] Preferably, in step (1), the organic solvent is added in the following order: first ethanol, then n-butanol and isopropanol, and the mixture is stirred until dissolved after each addition.

[0033] This invention provides a pyrrhotite collector. It has the following beneficial effects:

[0034] 1. This invention achieves highly efficient collection of pyrrhotite by introducing thiol-based and amide-based collectors into the collector. These collector molecules have a high affinity for the active sites on the surface of pyrrhotite, thereby greatly improving the mineral collection efficiency and achieving the technical objective of significantly increasing ore recovery rate.

[0035] 2. This invention uses amphiphilic molecules as surfactants, including anionic and cationic surfactants. These surfactants can effectively adjust the properties of the mineral surface, achieving selective separation of pyrrhotite from other impurity minerals. By improving the selectivity for the target mineral during flotation, the technical objective of improving mineral purity and recovery quality is achieved.

[0036] 3. By adding a collector aid, such as sodium dodecyl sulfate or ethoxylated alkylphenol, the present invention can significantly enhance the collecting performance of the main collector, so that the collector can still maintain a high efficiency at a low concentration, thereby achieving the technical objective of reducing the amount of collector used, reducing production costs and improving economic benefits.

[0037] 4. This invention uses environmentally friendly organic solvents such as ethanol, n-butanol, and isopropanol to replace traditionally used environmentally harmful solvents. These organic solvents not only meet the performance requirements of the collector but also reduce environmental pollution during use, achieving the technical objective of creating an environmentally friendly collector and meeting the requirements of green mine construction. Attached Figure Description

[0038] Figure 1 This is a flowchart illustrating the preparation method of a novel pyrrhotite collector. Detailed Implementation

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0040] Please see the appendix Figure 1 :

[0041] Example 1: Flotation of ores with high sulfide content

[0042] step:

[0043] Dissolving the collector: Dissolve 15 parts of a thiol-based collector (R-SH, where R is a C8-C18 alkyl or aryl group) and 20 parts of an amide-based collector (R-CONH2, where R is a C8-C18 alkyl or aryl group) in 30 parts of ethanol. Stir until homogeneous, maintain the temperature at 25°C, and stir for 20 minutes to ensure complete dissolution and uniform distribution of the collector.

[0044] Add surfactants and trapping aids: Add 5 parts of anionic surfactant sodium dodecyl sulfate and 8 parts of ethoxylated alkylphenol. Continue stirring until completely dissolved, maintaining the temperature at 25°C for 10 minutes. Surfactants reduce interfacial tension, while trapping aids improve harvesting efficiency.

[0045] Adding water and adjusting pH: Gradually add 40 parts water and 5 parts sodium carbonate to the mixture obtained in step (2), and stir until homogeneous. The water is added at a rate of 7 ml per minute to maintain uniform dispersion and control the pH value at 8.5. Sodium carbonate acts as a pH adjuster to optimize the flotation environment.

[0046] In summary, this embodiment is suitable for processing ores with high sulfide content. By optimizing the formulation of collectors and aids, flotation efficiency and selectivity are improved, the mixing of impurity minerals is reduced, and the concentrate grade is increased.

[0047] Example 2: Flotation for low-grade ores

[0048] step:

[0049] Dissolving the collector: Dissolve 10 parts of thiol-based collector and 10 parts of amide-based collector in 40 parts of isopropanol. Stir until homogeneous, maintain the temperature at 30°C, and stir for 15 minutes. Isopropanol, as an organic solvent, can effectively dissolve and disperse the collector.

[0050] Add surfactant and collector aid: Add 3 parts of a cationic surfactant quaternary ammonium salt compound and 5 parts of sodium dodecyl sulfate. Continue stirring until completely dissolved, maintaining the temperature at 25°C for 10 minutes. The surfactant enhances the collector's adsorption capacity on the mineral surface.

[0051] Adding water and adjusting pH: Gradually add 50 parts water and 8 parts sodium bicarbonate to the mixture obtained in step (2), and stir well. The water is added at a rate of 8 ml per minute, and the pH value is controlled at 8. Sodium bicarbonate adjusts the pH value of the pulp to provide a suitable flotation environment.

[0052] In summary, this embodiment is applicable to low-grade ores. By adjusting the formulation of the collector and the collector aid, the recovery rate of low-grade ores during flotation is improved, and valuable minerals in the ore are effectively extracted.

[0053] Example 3: Flotation of iron ore

[0054] step:

[0055] Dissolving the collector: Dissolve 20 parts of thiol-based collector and 25 parts of amide-based collector in 25 parts of n-butanol. Stir until homogeneous, maintain the temperature at 35°C, and stir for 25 minutes. n-Butanol, as an organic solvent, provides good solubility and stability.

[0056] Add surfactant and trapping aid: Add 7 parts sodium dodecyl sulfate and 10 parts ethoxylated alkylphenol. Continue stirring until completely dissolved, maintaining the temperature at 30°C for 15 minutes. The trapping aid enhances the collecting performance of the collector.

[0057] Add water and adjust pH: Gradually add 30 parts water and 6 parts sodium hydroxide to the mixture obtained in step (2), and stir well. The water is added at a rate of 9 ml per minute, and the pH is controlled at 9. Sodium hydroxide is used to adjust the pH to ensure the optimal activity of the collector.

[0058] In summary, this embodiment is applicable to the flotation of iron ore. By optimizing the formulation of collectors and aids and selecting appropriate organic solvents, the flotation efficiency and selectivity are improved, and the mineral recovery rate and concentrate grade are significantly enhanced.

[0059] Example 4: Flotation of fine-grained ores

[0060] step:

[0061] Dissolving the collector: Dissolve 5 parts of thiol-based collector and 5 parts of amide-based collector in 50 parts of ethanol. Stir until homogeneous, maintain the temperature at 20°C, and stir for 10 minutes. Ethanol, as an organic solvent, provides good solubility and dispersion.

[0062] Add surfactant and trapping agent: Add 2 parts sodium dodecyl sulfate and 4 parts quaternary ammonium salt compound. Continue stirring until completely dissolved, maintaining the temperature at 25°C for 10 minutes. The combination of surfactant and trapping agent significantly improves the collection ability of fine-grained minerals.

[0063] Adding water and adjusting pH: Gradually add 60 parts water and 4 parts sodium carbonate to the mixture obtained in step (2), and stir well. The water is added at a rate of 10 ml per minute, and the pH value is controlled at 8.5. Sodium carbonate adjusts the pH value, improving the stability of the collector and the flotation efficiency.

[0064] In summary, this embodiment is specifically designed for fine-grained ores. By combining high-concentration organic solvents with low-concentration collectors, it improves the collection and separation capabilities for fine-grained minerals, ensuring efficient flotation.

[0065] Example 5: Flotation of high-oxide ores

[0066] step:

[0067] Dissolving the collector: Dissolve 25 parts of thiol-based collector and 30 parts of amide-based collector in 20 parts of n-butanol. Stir until homogeneous, maintain the temperature at 40°C, and stir for 30 minutes. n-Butanol, as an organic solvent, provides excellent dissolving properties.

[0068] Add surfactant and trapping aid: Add 10 parts sodium dodecyl sulfate and 15 parts ethoxylated alkylphenol. Continue stirring until completely dissolved, maintaining the temperature at 30°C for 20 minutes. The trapping aid enhances the collecting performance of the collector.

[0069] Adding water and adjusting pH: Gradually add 20 parts water and 10 parts sodium bicarbonate to the mixture obtained in step (2), and stir well. The water is added at a rate of 5 ml per minute, and the pH is controlled at 7.5. Sodium bicarbonate is used to adjust the pH and provide the optimal flotation environment.

[0070] In summary, this embodiment is applicable to high oxide ores. By combining high-concentration collectors and collector aids, it improves the flotation efficiency and selectivity of oxide ores, and significantly increases mineral recovery and concentrate purity.

[0071] Summary:

[0072] Through the five different embodiments described above, the novel pyrrhotite collector of the present invention demonstrates wide applicability and high efficiency under different ore types and flotation conditions. Each embodiment, through the scientific and rational selection and combination of collectors, aids, organic solvents, and pH adjusters, significantly improves collection efficiency and selectivity, optimizes the flotation process, reduces dosage and environmental impact, and ensures a simple and efficient preparation process. These embodiments fully demonstrate the innovation and practicality of the present invention, providing a reliable and efficient solution for the mineral processing field.

[0073] Comparative experiment:

[0074] Comparative Experiment 1: Comparison of Harvesting Efficiency

[0075] Existing technology:

[0076] Collector: Use a conventional xanthate collector (such as sodium butyl xanthate) at a dosage of 20 parts.

[0077] pH adjuster: Use ammonium sulfate to adjust the pH value to 8.0.

[0078] Experimental steps:

[0079] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0080] Add collector: Add 20 parts of sodium butyl xanthate to the slurry and stir for 10 minutes.

[0081] Adjust pH: Add ammonium sulfate to adjust the pH to 8.0, and continue stirring for 5 minutes.

[0082] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0083] This invention:

[0084] Collector: The novel pyrrhotite collector of this invention is formulated as follows:

[0085] Thiol-based collector: 15 parts

[0086] Amide-based collector: 15 parts

[0087] Surfactant: 5 parts

[0088] Organic solvent (ethanol): 30 parts

[0089] Water: 40 parts

[0090] Acquisition aid (sodium dodecyl sulfate): 10 parts

[0091] pH adjuster (sodium carbonate): 5 parts

[0092] pH value controlled at 8.5

[0093] Experimental steps:

[0094] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0095] Add collector: Add the new collector to the slurry and stir for 15 minutes.

[0096] Adjust pH: Add sodium carbonate to adjust the pH to 8.5, and continue stirring for 5 minutes.

[0097] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0098] Experimental data table:

[0099] Types of collectors Ore recovery rate (%) Mineral purity (%) Flotation time (minutes) Production cost (RMB / ton) Existing technology collectors 70.2 85.5 30 50 The collector of the present invention 92.8 97.1 25 35

[0100] In summary, the experimental results show that the ore recovery rate and mineral purity of the collector of this invention are significantly higher than those of the collectors of the prior art. At the same time, the flotation time is shorter and the production cost is lower, which proves the superiority of this invention in terms of collection efficiency.

[0101] Comparative Experiment 2: Selective Comparison

[0102] Existing technology:

[0103] Collector: A conventional butyl xanthate collector is used, with a dosage of 25 parts.

[0104] pH adjuster: Use sodium hydroxide to adjust the pH value to 7.5.

[0105] Experimental steps:

[0106] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0107] Add collector: Add 25 parts of sodium butyl xanthate to the slurry and stir for 10 minutes.

[0108] Adjust pH: Add sodium hydroxide to adjust the pH to 7.5, and continue stirring for 5 minutes.

[0109] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0110] This invention:

[0111] Collector: The novel pyrrhotite collector of this invention is formulated as follows:

[0112] Thiol-based collector: 20 parts

[0113] Amide-based collector: 10 parts

[0114] Surfactant: 4 parts

[0115] Organic solvent (n-butanol): 25 parts

[0116] Water: 30 parts

[0117] Acquisition aid (ethoxylated alkylphenol): 8 parts

[0118] pH adjuster (sodium bicarbonate): 6 parts

[0119] pH value controlled at 8.0

[0120] Experimental steps:

[0121] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0122] Add collector: Add the new collector to the slurry and stir for 15 minutes.

[0123] Adjust pH: Add sodium bicarbonate to adjust pH to 8.0, and continue stirring for 5 minutes.

[0124] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0125] Experimental data table:

[0126] In summary, the experimental results show that the collector of the present invention has higher selectivity for pyrrhotite during the flotation process, significantly reduces the content of impurity minerals, significantly improves mineral purity, and lowers production costs, demonstrating the obvious advantages of the present invention in terms of selectivity and economy.

[0127] Comparative Experiment 3: Dosage Comparison

[0128] Existing technology:

[0129] Collector: Use a conventional thiophosphate collector (such as dibutyl thiophosphate) at a dosage of 30 parts.

[0130] pH adjuster: Use sodium hydroxide to adjust the pH value to 9.0.

[0131] Experimental steps:

[0132] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0133] Add collector: Add 30 parts of dibutyl thiophosphate to the slurry and stir for 10 minutes.

[0134] Adjust pH: Add sodium hydroxide to adjust the pH to 9.0, and continue stirring for 5 minutes.

[0135] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0136] This invention:

[0137] Collector: The novel pyrrhotite collector of this invention is formulated as follows:

[0138] Thiol-based collector: 10 parts

[0139] Amide-based collector: 10 parts

[0140] Surfactant: 3 parts

[0141] Organic solvent (isopropanol): 40 parts

[0142] Water: 50 parts

[0143] Acquisition aid (sodium dodecyl sulfate): 7 parts

[0144] pH adjuster (sodium carbonate): 5 parts

[0145] pH value controlled at 8.5

[0146] Experimental steps:

[0147] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0148] Add collector: Add the new collector to the slurry and stir for 15 minutes.

[0149] Adjust pH: Add sodium carbonate to adjust the pH to 8.5, and continue stirring for 5 minutes.

[0150] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0151] Experimental data table:

[0152] Types of collectors Dosage of collector (parts) Ore recovery rate (%) Mineral purity (%) Production cost (RMB / ton) Existing technology collectors 30 75.4 83.7 60 The collector of the present invention 10 89.7 95.8 35

[0153] In summary, the experimental results show that the collector of the present invention can maintain a high ore recovery rate and mineral purity while significantly reducing the dosage, and at the same time, the production cost is greatly reduced, demonstrating the advantages of the present invention in terms of collector dosage and economic benefits.

[0154] Comparative Experiment 4: Environmental Comparison

[0155] Existing technology:

[0156] Collector: A traditional ethionine collector is used, with a dosage of 20 parts.

[0157] pH adjuster: Use sodium hydroxide to adjust the pH value to 8.0.

[0158] Experimental steps:

[0159] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0160] Add collector: Add 20 parts of ethionine to the slurry and stir for 10 minutes.

[0161] Adjust pH: Add sodium hydroxide to adjust the pH to 8.0, and continue stirring for 5 minutes.

[0162] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0163] This invention:

[0164] Collector: The novel pyrrhotite collector of this invention is formulated as follows:

[0165] Thiol-based collector: 10 parts

[0166] Amide-based collector: 10 parts

[0167] Surfactant: 3 parts

[0168] Organic solvent (n-butanol): 25 parts

[0169] Water: 35 parts

[0170] Acquisition aid (ethoxylated alkylphenol): 8 parts

[0171] pH adjuster (sodium bicarbonate): 6 parts

[0172] pH value controlled at 8.0

[0173] Experimental steps:

[0174] Slurry preparation: The ore is crushed to -74μm and the slurry concentration is adjusted to 30%.

[0175] Add collector: Add the new collector to the slurry and stir for 15 minutes.

[0176] Adjust pH: Add sodium bicarbonate to adjust pH to 8.0, and continue stirring for 5 minutes.

[0177] Flotation: Perform flotation, collect the foam product, dry it and weigh it.

[0178] Experimental data table:

[0179] Types of collectors COD (mg / L) BOD (mg / L) Water toxicity (EC50, mg / L) Production cost (RMB / ton) Existing technology collectors 250 180 25 55 The collector of the present invention 100 60 75 40

[0180] In summary, the experimental results show that the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) generated by the collector of the present invention are significantly reduced during use, the toxicity of water is reduced, and the production cost is lower. This indicates that the present invention is superior to the prior art in terms of environmental protection and economy, and reduces environmental pollution.

[0181] Summary:

[0182] Through the four comparative experiments described above, the novel pyrrhotite collector of this invention demonstrates significant advantages in various aspects. Experimental results show that this invention not only far surpasses existing technologies in collection efficiency and selectivity, but also exhibits significant superiority in reducing collector dosage, minimizing environmental pollution, and simplifying the preparation process. The specific experimental data fully demonstrate the innovation and practicality of this invention, providing a highly efficient, environmentally friendly, and economical solution for the mineral processing field.

[0183] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pyrrhotite collector characterized in that, The collector comprises the following components by weight parts: Thiol group collector: 5-30 parts, wherein the specific structural formula of the thiol group collector is R-SH, wherein R is C8-C18 alkyl or aryl; Amide group collector: 5-30 parts, wherein the specific structural formula of the amide group collector is R-CONH2, wherein R is C8-C18 alkyl or aryl; Surfactant: 2-10 parts, wherein the surfactant is an amphiphilic molecule, including one or more of anionic surfactants and cationic surfactants, and the surfactant includes sodium dodecyl sulfate and quaternary ammonium salt compounds; Organic solvent: 20-50 parts, wherein the organic solvent is an alcohol solvent, and the alcohol solvent is one or more of ethanol, n-butanol and isopropyl alcohol; Water: 20-60 parts; Collector aid: 1-15 parts, which includes sodium dodecyl sulfate or ethoxylated alkyl phenol; pH regulator: 1-10 parts.

2. A pyrrhotite collector according to claim 1, characterised in that, The pH regulator is one or more of sodium carbonate, sodium bicarbonate or sodium hydroxide.

3. A process for the preparation of the pyrrhotite collector of any one of claims 1 to 2, characterized in that, The method comprises the following steps: (1) Dissolve the thiol group collector and the amide group collector in the organic solvent according to the proportion, and stir uniformly; (2) Add the surfactant and the collector aid, and continue to stir until dissolved; (3) Gradually add water to the mixture obtained in step (2), and add the pH regulator, stir uniformly, to obtain the collector.

4. A process for the preparation of a pyrrhotite collector according to claim 3, characterized in that, The stirring temperature in step (1) is 20-40°C, and the stirring time is 10-30 minutes; the stirring temperature in step (2) is 20-30°C, and the stirring time is 5-20 minutes.

5. A process for the preparation of a pyrrhotite collector according to claim 3, characterized in that, The water adding speed in step (3) is 5-10 ml per minute, and uniform dispersion is maintained during stirring; the process of adding the pH regulator in step (3) controls the pH value between 7 and 9.

6. A process for the preparation of a pyrrhotite collector according to claim 3, characterized in that, The addition sequence of the organic solvent in step (1) is to add ethanol first, then add n-butanol and isopropyl alcohol in turn, and stir until dissolved after each addition.

7. A process for the preparation of a pyrrhotite collector according to claim 3, characterized by, The addition sequence of the surfactant and the collector aid in step (2) is to add the anionic surfactant first, then add the cationic surfactant, and finally add the collector aid, and stir uniformly after each addition.

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