A flotation separation depressor for copper-lead sulfide ore and a preparation method and application thereof

Abstract

The application provides a copper-lead sulfide ore flotation separation inhibitor and a preparation method and application thereof, and belongs to the technical field of ore-dressing reagents. The main components of the inhibitor are maleic acid acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite. In the preparation, the maleic acid acrylic acid copolymer, the trisodium nitrilotriacetate and the sodium sulfite are mixed at normal temperature, and then are added into a high-shear emulsifying machine to be emulsified and dispersed, so that a uniform viscous suspension inhibitor is obtained. In the application, after the raw ore is treated, preselected ore slurry is obtained; copper-lead mixed flotation is performed first to obtain copper-lead mixed concentrate and copper-lead tailings; active carbon and sodium sulfide are added into the copper-lead mixed concentrate first, and reagents are added to perform copper-lead separation flotation to obtain copper and lead concentrates. The inhibitor has the advantages of being cheap, easy to obtain and store and environment-friendly. The inhibition effect on galena is good, the copper-lead sulfide ore separation effect is good, and the ore-dressing indexes are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore-dressing reagent, in particular to a copper-lead sulfide ore flotation separation inhibitor, a preparation method and application thereof. BACKGROUND

[0002] Copper and lead are important non-ferrous metals, which are widely used in military industry, hard alloy manufacturing, modern communication technology, electronic computer, aerospace, nuclear radiation protection and other fields due to their physical and chemical properties. China has abundant copper and lead mineral resources. However, with the development of economy and technology in China, the demand and consumption of copper and lead have greatly increased. The extension and in-depth development of copper and lead mineral resources are easy to deplete the rich ore resources which are easy to separate. At present, the developed copper and lead mineral resources are mainly low-grade copper-lead sulfide ores which are difficult to separate. Therefore, it is increasingly important to realize the efficient development and utilization of such copper and lead resources.

[0003] At present, the method of froth flotation is mainly used in industry to recover chalcopyrite and galena. For a long time, the separation of chalcopyrite and galena has been a difficulty in the process of ore dressing and recovery. Because the surfaces of these two minerals have similar physical and chemical properties, resulting in similar floatability. At the same time, the minerals are closely intergrown, the embedded particle size is fine, and the mineral composition is complex, which makes it difficult to separate the two minerals, causing great influence on the ore dressing and recovery of chalcopyrite and galena.

[0004] Therefore, in the process of copper-lead separation, an inhibitor needs to be added to change the surface floatability of the two minerals and strengthen the flotation separation effect of the two minerals. At present, the most widely used and effective inhibitor in actual production is toxic inhibitors such as potassium dichromate and cyanide, which is not conducive to environmental safety. In the actual copper-lead separation flotation system, the galena is usually inhibited, and the commonly used inhibitor is potassium dichromate. To achieve effective inhibition of galena, the galena needs to be oxidized and pretreated in the flotation process to achieve the inhibition of galena. However, due to the need for oxidation pretreatment, the treatment capacity is reduced, which is not conducive to the expansion of production scale. And the use of dichromate also easily pollutes the water environment, increasing the cost of wastewater treatment. In order to reduce the amount of potassium dichromate, inorganic salts such as sodium persulfate and sulfite can be used together to inhibit the floatability of galena and strengthen its inhibition effect, thereby improving the ore dressing and recovery effect and improving the selectivity of the flotation process. In addition, macromolecular organic inhibitors such as gum and chitosan can also be used to inhibit galena. Although these inhibitors have the advantages of green, environmental protection and biodegradation, their solubility, dosage and production cost are poor, which hinders their large-scale industrial application.

[0005] Therefore, seeking a good environmental protection, strong inhibition, good selectivity of copper and lead separation inhibitor is the urgent demand of mine enterprises at present, and it has important significance for improving the utilization level of copper and lead resources in China. SUMMARY

[0006] The present application aims at the poor separation effect, strong toxicity and large pollution of the existing technology in the copper and lead separation flotation process, and provides a copper and lead sulfide ore flotation separation inhibitor, a preparation method and application thereof. The inhibitor can effectively reduce the content of lead in the concentrate product while ensuring the copper recovery rate in the copper and lead flotation separation process, so that the quality of copper concentrate product is significantly improved, and has the advantages of good separation effect, small environmental pollution, etc. and can be widely applied to the flotation process.

[0007] The inhibitor comprises maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite, and the contents of maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite are 65-75%, 10-20% and 5-15% respectively according to the mass ratio.

[0008] Preferably, the contents of maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite are 70%, 20% and 10% respectively.

[0009] The preparation method of the copper and lead sulfide ore flotation separation inhibitor comprises the following steps: mixing maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite in proportion at room temperature, then adding them into a high-shear emulsifying machine for emulsification and dispersion to obtain a uniform viscous suspension, which is the copper and lead separation inhibitor.

[0010] The rotation speed of the high-shear emulsifying machine is not less than 6000 rpm, and the emulsification and dispersion time is 30 minutes.

[0011] The copper and lead separation inhibitor is applied to copper and lead mixed concentrate. The specific application method comprises the following steps:

[0012] (1) adjusting the mass concentration of the ore pulp to 300-350 g / L after crushing and grinding the copper and lead sulfide ore raw ore to obtain preselected ore pulp, wherein the grinding is performed to a particle fineness of 75-85% of -0.074 mm;

[0013] (2) adding inhibitor zinc sulfate and calcium oxide, collector Z-200 and frother No. 2 oil into the preselected ore pulp to perform copper and lead mixed roughing operation to obtain copper and lead mixed concentrate and copper and lead mixed tailings;

[0014] (3) the copper-lead mixed floating tailings are subjected to two times of scavenging, collector Z-200 and frother No. 2 oil are added, the addition amount of the collector Z-200 in each time of copper-lead scavenging is 0.1-0.5 times of the copper-lead mixed floating roughing, the addition amount of the frother No. 2 oil is 0.1-0.5 times of the copper-lead mixed floating roughing, and the scavenging tailings are the mixed floating tailings;

[0015] (4) the copper-lead mixed concentrate in step (2) is added with activated carbon and sodium sulfide and stirred for 10-15 minutes to remove the residual reagents on the surface of the minerals, then a copper-lead separation inhibitor is added, and after stirring for 5-15 minutes, collector Z-200 and frother No. 2 oil are sequentially added to perform a copper-lead separation floating operation, and a copper rough concentrate and a lead rough concentrate are obtained through roughing;

[0016] (5) the copper rough concentrate obtained in step (4) is subjected to three times of cleaning, and only the copper-lead separation inhibitor is added in each time of cleaning, and the addition amount of the copper-lead separation inhibitor in each time of cleaning is 0.2-0.8 times of the roughing in step (4);

[0017] (6) the lead rough concentrate obtained in step (4) is subjected to two times of scavenging, collector Z-200 and frother No. 2 oil are added, the addition amount of the collector Z-200 in each time of scavenging is 0.1-0.6 times of the roughing in step (4), the addition amount of the frother No. 2 oil is 0.1-0.8 times of the roughing in step (4), and the scavenging tailings are the lead concentrate;

[0018] (7) the middlings in step (5) and step (6) are returned to the previous stage in turn to form a closed circuit.

[0019] In step (2), the zinc sulfate is used in an amount of 800-1300 g / t, the calcium oxide is used in an amount of 500-2000 g / t, the collector Z-200 is used in an amount of 50-100 g / t, and the frother No. 2 oil is used in an amount of 5-30 g / t.

[0020] In step (4), the activated carbon is used in an amount of 500-1500 g / t, the sodium sulfide is used in an amount of 400-1000 g / t, the copper-lead separation inhibitor is used in an amount of 500-1500 g / t, the collector Z-200 is used in an amount of 50-100 g / t, and the frother No. 2 oil is used in an amount of 10-60 g / t.

[0021] The beneficial effects of the above technical scheme of the present application are as follows:

[0022] The main component of the inhibitor is the maleic acid-acrylic acid copolymer which strongly inhibits galena, and the inhibitor also contains trisodium nitrilotriacetate and sodium sulfite to further strengthen the inhibiting effect and selectivity, and improve the separation effect of chalcopyrite and galena. Compared with the prior art, the main component of the copper-lead separation inhibitor in the application is the maleic acid-acrylic acid copolymer, and the content is 65% to 75%. The secondary component is trisodium nitrilotriacetate, and the content is 10% to 20%. Both of them are chelating agents and scale inhibitors, rich in carboxyl structure, and have strong ability to complex lead ions, which can achieve strong inhibition of galena, and the inhibiting performance is stronger than that of potassium dichromate. In addition, the surface of chalcopyrite is mainly composed of copper and sulfur ions, and the radius of sulfur ions is much larger than that of copper ions. Due to the electrostatic repulsion and steric hindrance effect, the combined inhibitor basically does not act on the surface of chalcopyrite, and does not inhibit chalcopyrite, and the selectivity is much better than that of potassium dichromate. Therefore, compared with the traditional copper-lead separation inhibitor, the present inhibitor has the excellent performances of strong inhibiting effect and good selectivity. At the same time, it is non-toxic, has good water solubility, and is cheap and easy to obtain. It not only has high safety in production and application, but also does not pollute the environment, and fully meets the requirements of industrial production. Therefore, compared with the traditional copper-lead separation inhibitor, the present inhibitor has the significant advantages of being cheap and easy to obtain, easy to store, non-toxic and harmless. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The application provides a copper-lead sulfide ore flotation separation inhibitor, a preparation method and application thereof. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and advantages of the present application clearer, specific embodiments will be described in detail below with reference to the drawings.

[0025] The present application provides a copper-lead sulfide ore flotation separation inhibitor, a preparation method and application thereof.

[0026] The inhibitor comprises maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite, and the contents of the maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite are 65% to 75%, 10% to 20% and 5% to 15% respectively.

[0027] The preparation method of the inhibitor comprises the following steps: under normal temperature conditions, the maleic acid-acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite are mixed in proportion, and then are added into a high-shear emulsifying machine for emulsification and dispersion to obtain a uniform viscous suspension, which is the copper-lead separation inhibitor.

[0028] The application method of the inhibitor comprises the following steps: Figure 1

[0029] ​(1) the copper-lead sulfide ore is crushed and ground, and the mass concentration of the ore slurry is adjusted to 300-350 g / L, and the grinding is performed to a particle size of 75-85% passing 0.074 mm;

[0030] (2) the pre-concentration slurry is added with a depressant of zinc sulfate and calcium oxide, a collector Z-200, and a frother No. 2 oil, and a copper-lead mixed roughing is performed to obtain a copper-lead mixed concentrate and a copper-lead mixed tailing;

[0031] (3) the copper-lead mixed tailing is subjected to 2 times of scavenging, and the collector Z-200 and the frother No. 2 oil are added, and the addition amount of the collector Z-200 is 0.1-0.5 times of that of the copper-lead mixed roughing, and the addition amount of the frother No. 2 oil is 0.1-0.5 times of that of the copper-lead mixed roughing, and the scavenging tailing is the mixed tailing;

[0032] (4) the copper-lead mixed concentrate of step (2) is added with active carbon and sodium sulfide for 10-15 minutes of stirring to remove the residual reagents on the surface of the minerals, and then a copper-lead separation depressant is added, and after 5-15 minutes of stirring, the collector Z-200 and the frother No. 2 oil are sequentially added to perform a copper-lead separation flotation, and a copper rough concentrate and a lead rough concentrate are obtained by roughing;

[0033] (5) the copper rough concentrate of step (4) is subjected to 3 times of cleaning, and only the copper-lead separation depressant is added, and the addition amount of the copper-lead separation depressant in each cleaning is 0.2-0.8 times of that of the roughing of step (4);

[0034] (6) the lead rough concentrate of step (4) is subjected to 2 times of scavenging, and the collector Z-200 and the frother No. 2 oil are added, and the addition amount of the collector Z-200 in each scavenging is 0.1-0.6 times of that of the roughing of step (4), and the addition amount of the frother No. 2 oil is 0.1-0.8 times of that of the roughing of step (4), and the scavenging tailing is the lead concentrate;

[0035] (7) the middlings of the cleaning of step (5) and the scavenging of step (6) are returned to the previous stage in turn to form a closed circuit.

[0036] The following will be described in combination with specific examples.

[0037] Example 1

[0038] The copper-lead separation inhibitor used in this example consists of the following components in mass fraction: 70% maleic acid acrylic acid copolymer, 20% trisodium nitrilotriacetate, and 10% sodium sulfite. The above-mentioned inhibitor is used for copper-lead mixed concentrate flotation. In this example, a certain copper-lead sulfide ore in Hunan Province contains 2.33% copper and 5.58% lead. Copper mainly exists in the form of chalcopyrite, and lead mainly exists in the form of galena. The ore contains a small amount of quartz, feldspar and other gangue minerals.

[0039] The specific steps are as follows:

[0040] (1) The raw ore is crushed and ground to a particle size of 75% passing 0.074 mm, and then water is added to the pre-concentrate powder to adjust the mass concentration of the ore slurry to 300 g / L, obtaining a pre-concentrate slurry; zinc sulfate inhibitor 600 g / t and lime 1000 g / t are added to the pre-concentrate slurry, the dosage of the collector Z-200 is 50 g / t, and the dosage of the frother No. 2 oil is 15 g / t for copper-lead mixed roughing, obtaining copper-lead mixed concentrate and copper-lead tailings.

[0041] The copper-lead mixed flotation tailings are subjected to scavenging, and during the copper-lead scavenging, the dosage of Z-200 in the first scavenging is 15 g / t, the dosage of Z-200 in the second scavenging is 5 g / t; the dosage of the frother No. 2 oil in the first scavenging is 10 g / t, and the dosage of the frother No. 2 oil in the second scavenging is 5 g / t.

[0042] (2) The obtained copper-lead mixed concentrate is first added with activated carbon 500 g / t and sodium sulfide 500 g / t and stirred for 15 minutes to remove the mixed flotation reagents remaining on the surface of the minerals, and then added with copper-lead separation inhibitor 1000 g / t and stirred for 5 minutes, and then added with collector Z-200 40 g / t and frother No. 2 oil 20 g / t, and the reagent action time is 3 minutes, and then copper roughing is carried out.

[0043] The copper rough concentrate and the lead rough concentrate obtained are subjected to 3 times of cleaning and 2 times of scavenging in a closed-circuit beneficiation process, and then copper concentrate and lead concentrate are obtained.

[0044] (3) In the cleaning process, the dosage of the copper-lead separation inhibitor in the first cleaning is 400 g / t, the dosage of the copper-lead separation inhibitor in the second cleaning is 200 g / t, and the dosage of the copper-lead separation inhibitor in the third cleaning is 100 g / t. In the scavenging process, the dosage of Z-200 in the first scavenging is 20 g / t, and the dosage of Z-200 in the second scavenging is 5 g / t; the dosage of the frother No. 2 oil in the first scavenging is 5 g / t, and the dosage of the frother No. 2 oil in the second scavenging is 5 g / t.

[0045] The results of Example 1 are shown in Table 1.

[0046] Table 1 Results of Example 1

[0047]

[0048] As shown in Table 1, the copper-lead separation inhibitor in the application is used for copper-lead separation flotation of a certain copper-lead sulfide ore in Hunan, and good beneficiation indexes can be obtained at a low dosage. In the laboratory closed-circuit test, a copper concentrate with a copper grade of 26.43% and a recovery rate of 83.16% is obtained, wherein the copper concentrate contains lead with a grade of 1.45%. A lead concentrate with a lead grade of 56.33% and a recovery rate of 86.35% is obtained, wherein the lead concentrate contains copper with a grade of 1.15%.

[0049] Example 2

[0050] The copper-lead separation inhibitor used in this example consists of the following components by mass fraction: 70% maleic acid-acrylic acid copolymer, 20% trisodium nitrilotriacetate, and 10% sodium sulfite. The above-mentioned inhibitor is used for copper-lead mixed concentrate flotation. In this example, a certain copper-lead sulfide ore in Yunnan contains 1.70% copper and 4.23% lead. Copper mainly exists in the form of chalcopyrite, and lead mainly exists in the form of galena. The ore contains a small amount of quartz, feldspar, and other gangue minerals.

[0051] The specific steps are as follows:

[0052] (1) The raw ore is crushed and ground to a particle size of 75% passing 0.074 mm, and then water is added to the pre-concentrate powder to adjust the mass concentration of the ore slurry to 350 g / L to obtain a pre-concentrate slurry. Zinc sulfate 800 g / t and lime 800 g / t are added to the pre-concentrate slurry, the dosage of the collector Z-200 is 60 g / t, and the dosage of the frother No. 2 oil is 15 g / t for copper-lead mixed roughing to obtain copper-lead mixed concentrate and copper-lead mixed flotation tailings.

[0053] The copper-lead mixed flotation tailings are subjected to scavenging, and the dosage of Z-200 in the first scavenging is 10 g / t, and the dosage of Z-200 in the second scavenging is 5 g / t. The dosage of frother No. 2 oil in the first scavenging is 10 g / t, and the dosage of frother No. 2 oil in the second scavenging is 5 g / t.

[0054] (2) The obtained copper-lead mixed concentrate is first stirred with 600 g / t of activated carbon and 600 g / t of sodium sulfide for 15 minutes to remove the mixed flotation reagents remaining on the surface of the minerals, and then 1200 g / t of the copper-lead separation inhibitor is added and stirred for 5 minutes. Then 40 g / t of the collector Z-200 and 15 g / t of the frother No. 2 oil are added, and the action time of the reagents is 3 minutes for copper roughing.

[0055] The copper rough concentrate and the lead rough concentrate obtained are subjected to 3 times of cleaning and 2 times of scavenging in a closed-circuit beneficiation process, and then copper concentrate and lead concentrate are obtained.

[0056] (3) In the process of cleaning, the copper-lead separation inhibitor added in cleaning 1 is 500 g / t, the copper-lead separation inhibitor added in cleaning 2 is 250 g / t, and the copper-lead separation inhibitor added in cleaning 3 is 120 g / t. In the process of scavenging, the dosage of Z-200 in scavenging 1 is 20 g / t, and the dosage of Z-200 in scavenging 2 is 5 g / t; the dosage of foaming agent No. 2 oil in scavenging 1 is 5 g / t, and the dosage of foaming agent No. 2 oil in scavenging 2 is 5 g / t.

[0057] Table 2 results of Example 2

[0058]

[0059] As can be seen from Table 2, the copper-lead separation inhibitor in the present application is used for copper-lead separation flotation of a certain copper-lead sulfide ore in Yunnan, and good beneficiation indexes can still be obtained at a lower dosage. In the laboratory closed-circuit test, a copper concentrate with a copper grade of 23.43% and a recovery rate of 87.02% can be obtained, wherein the lead grade of the copper concentrate is 1.35%. A lead concentrate with a lead grade of 59.43% and a recovery rate of 92.48% can be obtained, wherein the copper grade of the lead concentrate is 1.23%.

[0060] Example 3

[0061] The copper-lead separation inhibitor used in the present embodiment consists of the following components by mass fraction: 70% maleic acid acrylic acid copolymer, 20% trisodium nitrilotriacetate, and 10% sodium sulfite. The above-mentioned inhibitor is used for copper-lead mixed concentrate flotation. In the present embodiment, a certain complex polymetallic ore in Sichuan contains 1.58% copper and 4.55% lead. Copper mainly exists in the form of chalcopyrite and chalcocite, and lead mainly exists in the form of galena. The ore contains a small amount of quartz, feldspar and other gangue minerals.

[0062] The specific steps are as follows:

[0063] (1) The raw ore is crushed and ground to a particle size of 75% passing 0.074 mm, and then water is added to the pre-concentrate powder to adjust the mass concentration of the ore slurry to 350 g / L to obtain a pre-concentrate slurry; 100 g / t of zinc sulfate inhibitor and 100 g / t of lime are added to the pre-concentrate slurry, and 55 g / t of Z-200 collector and 15 g / t of foaming agent No. 2 oil are added for copper-lead mixed roughing to obtain copper-lead mixed concentrate and copper-lead mixed flotation tailings.

[0064] The copper-lead mixed flotation tailings are subjected to scavenging, and in the process of copper-lead scavenging, the dosage of Z-200 in scavenging 1 is 15 g / t, and the dosage of Z-200 in scavenging 2 is 5 g / t; the dosage of foaming agent No. 2 oil in scavenging 1 is 10 g / t, and the dosage of foaming agent No. 2 oil in scavenging 2 is 5 g / t.

[0065] (2) the obtained copper-lead mixed concentrate is first added with 800 g / t of activated carbon and 400 g / t of sodium sulfide and stirred for 15 minutes to remove the mixed flotation reagents remaining on the surface of the minerals, then 1000 g / t of copper-lead separation depressant is added and stirred for 5 minutes, then 30 g / t of collector Z-200 and 15 g / t of frother No. 2 oil are added, and the reagents are allowed to act for 3 minutes before copper roughing is performed.

[0066] The obtained copper rough concentrate and lead rough concentrate are respectively subjected to 3 times of cleaning and 2 times of scavenging in a closed-circuit beneficiation process, so that copper concentrate and lead concentrate are obtained.

[0067] (3) In the cleaning process, 300 g / t of copper-lead separation depressant is added in cleaning 1, 150 g / t of copper-lead separation depressant is added in cleaning 2, and 75 g / t of copper-lead separation depressant is added in cleaning 3. In the scavenging process, the dosage of Z-200 in scavenging 1 is 15 g / t, and the dosage of Z-200 in scavenging 2 is 10 g / t; the dosage of frother No. 2 oil in scavenging 1 is 5 g / t, and the dosage of frother No. 2 oil in scavenging 2 is 5 g / t.

[0068] Table 3 results of Example 3

[0069]

[0070] As shown in Table 3, the copper-lead separation depressant in the present application is used for copper-lead separation flotation of a certain complex polymetallic ore in Sichuan, and good beneficiation indexes can still be obtained at a low dosage. In the laboratory closed-circuit test, a copper concentrate with a copper grade of 25.43% and a recovery rate of 82.75% is obtained, and the copper concentrate contains lead with a grade of 1.23%. A lead concentrate with a lead grade of 55.43% and a recovery rate of 92.09% is obtained, and the lead concentrate contains copper with a grade of 1.18%.

[0071] The above describes preferred embodiments of the present application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A depressant for the flotation separation of copper-lead sulfide ores containing galena, characterized in that, It includes maleic acid-acrylic acid copolymer, trisodium trinitrile triacetate and sodium sulfite, with the contents of maleic acid-acrylic acid copolymer, trisodium trinitrile triacetate and sodium sulfite being 65%-75%, 10%-20% and 5%-15% by mass ratio, respectively; The main component of the separation inhibitor is the maleic acid-acrylic acid copolymer, which inhibits the inhibition of galena. It also contains trisodium triacetate and sodium sulfite to further enhance the inhibition and selectivity. Both the maleic acid-acrylic acid copolymer and the trisodium triacetate are chelating agents and scale inhibitors. They have a structure rich in carboxyl groups and have a strong ability to complex lead ions, thus inhibiting the inhibition of galena. The surface of chalcopyrite is mainly composed of copper and sulfur ions. At the same time, the radius of sulfur ions is much larger than that of copper ions. Due to electrostatic repulsion and steric hindrance, the separation inhibitor basically does not interact with the surface of chalcopyrite and will not inhibit the inhibition of chalcopyrite. The separation inhibitor is prepared by mixing maleic acid-acrylic acid copolymer, trisodium triacetate, and sodium sulfite in a certain proportion at room temperature, and then adding the mixture to a high-shear emulsifier for emulsification and dispersion. The rotation speed of the high-shear emulsifier is not less than 6000 rpm, resulting in a uniform and viscous suspension, which is the separation inhibitor.

2. The copper-lead sulfide ore flotation separation inhibitor according to claim 1, characterized in that, The contents of the maleic acid-acrylic acid copolymer, trisodium triacetate, and sodium sulfite are 70%, 20%, and 10%, respectively.

3. The copper-lead sulfide ore flotation separation inhibitor according to claim 1, characterized in that, The emulsification and dispersion process takes 30 minutes.

4. The application method of the copper-lead sulfide ore flotation separation inhibitor according to claim 1, characterized in that, Includes the following steps: (1) After crushing and grinding the raw copper-lead sulfide ore, the mass concentration of the slurry is adjusted to 300g / L to 350g / L to obtain a pre-selected slurry, of which 75% to 85% are ground to a particle size of -0.074mm. (2) Add zinc sulfate and calcium oxide inhibitors, collector Z-200 and frother No. 2 oil to the pre-selected slurry to carry out copper-lead mixed flotation roughing operation to obtain copper-lead mixed concentrate and copper-lead mixed flotation tailings. (3) The copper-lead mixed flotation tailings are scavenged twice, with collector Z-200 and frother No. 2 oil added. The amount of collector Z-200 added in each copper-lead scavenging is 0.1 to 0.5 times that of the copper-lead mixed flotation roughing, and the amount of frother No. 2 oil added is 0.1 to 0.5 times that of the copper-lead mixed flotation roughing. The scavenged tailings are the mixed flotation tailings. (4) Add activated carbon and sodium sulfide to the copper-lead mixed concentrate in step (2) and stir for 10-15 minutes to remove the residual reagents on the mineral surface. Then add copper-lead separation inhibitor and stir for 5-15 minutes. Then add collector Z-200 and frother No. 2 oil in sequence to carry out copper-lead separation flotation operation. Copper rough concentrate and lead rough concentrate are obtained by roughing. (5) The copper rough concentrate obtained in step (4) is cleaned three times. Only copper-lead separation inhibitor is added during the cleaning. The amount of copper-lead separation inhibitor added in each cleaning is 0.2 to 0.8 times that in the roughing in step (4). (6) The lead rough concentrate obtained in step (4) is subjected to two scavenging processes. Collector Z-200 and frother No. 2 oil are added during the scavenging process. The amount of collector Z-200 added in each scavenging process is 0.1 to 0.6 times that in the roughing process in step (4), and the amount of frother No. 2 oil added is 0.1 to 0.8 times that in the roughing process in step (4). The tailings from the scavenging process are the lead concentrate. (7) The middlings selected in step (5) and the middlings selected in step (6) are returned to the previous level in sequence to form a closed loop; In step (2), the amount of zinc sulfate used is 800-1300 g / t, the amount of calcium oxide used is 500-2000 g / t, the amount of collector Z-200 used is 50-100 g / t, and the amount of foaming agent No. 2 oil used is 5-30 g / t. In step (4), the amount of activated carbon used is 500-1500 g / t, the amount of sodium sulfide used is 400-1000 g / t, the amount of copper-lead separation inhibitor used is 500-1500 g / t, the amount of collector Z-200 used is 50-100 g / t, and the amount of foaming agent No. 2 oil used is 10-60 g / t.

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