Surfactant-containing flotation reagent for gold antimony ore and preparation method of surfactant-containing flotation reagent

Abstract

The invention relates to the technical field of flotation reagents, in particular to a gold antimony ore surfactant-containing flotation reagent and a preparation method thereof.The gold antimony ore surfactant-containing flotation reagent is prepared from, by mass, modified silicone oil, ethyl xanthate, ammonium dibutyl dithiophosphate, water glass, polyacrylamide, ethionine ester, methyl isobutyl carbinol, sodium carbonate, a composite surfactant and water; the flotation reagent containing the surface active agent for the gold antimony ore has obvious advantages in the aspects of improving the foam stabilizing effect and improving the gold recovery rate, and the flotation reagent is mainly achieved through the synergistic effect of all the components. The modified silicone oil is prepared, has a unique molecular structure and surface activity, and can effectively reduce the surface tension of bubbles and inhibit the merging and cracking of the bubbles.

Description

Technical Field

[0001] The present invention relates to the technical field of flotation reagents, and specifically to a flotation reagent containing a surfactant for gold-antimony ore and a preparation method thereof. Background Art

[0002] Gold-antimony ore is an important precious and non-ferrous metal resource. Due to its complex mineral characteristics and physical and chemical behaviors, many problems are faced in the flotation separation process, which restricts the further improvement of ore dressing efficiency and economic benefits.

[0003] Gold and antimony minerals often coexist with sulfide minerals such as pyrite and arsenopyrite. The surface chemical environment of such gangue minerals is relatively complex and forms strong chemical bonds with gold and antimony minerals. When the mineral surface undergoes oxidation, such as contacting oxygen free radicals or dissolved Fe in the pulp 3+ , it is easy to generate oxygen-containing phases such as SbO3 - or Au(OH)3. This hydrophilic film reduces the adsorption efficiency of xanthate reagents and affects the flotation efficiency.

[0004] Traditional surfactants act on the foaming interface of the pulp through electrostatic adsorption and hydrophobic adsorption. However, their stability is low under pulp shear and electrolyte environment, especially the stability of the foam system is insufficient. In addition, the conventional foam layer is extremely easy to break when the sorting pressure fluctuates, resulting in uncontrollable foam mineralization process and affecting the enrichment of gold and antimony and the separation effect of concentrate.

[0005] Therefore, it is of great significance to develop a flotation reagent containing a surfactant for gold-antimony ore. Summary of the Invention

[0006] Aiming at the problems existing in the prior art, the present invention provides a flotation reagent containing a surfactant for gold-antimony ore and a preparation method thereof.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A flotation reagent containing a surfactant for gold-antimony ore is made from the following raw materials in parts by mass: 8-15 parts of modified silicone oil, 12-20 parts of ethyl xanthate, 8-12 parts of ammonium butyl dithiophosphate, 15-20 parts of water glass, 3-5 parts of polyacrylamide, 3-5 parts of ethyl thionocarbamate, 5-8 parts of methyl isobutyl carbinol, 3-7 parts of sodium carbonate, 6-12 parts of a composite surfactant, and 200-210 parts of water.

[0009] As a further technical solution, the purity of the ethyl xanthate is not less than 90%, and the active ingredient content is not less than 85%.

[0010] As a further technical solution, the purity of the ammonium butyl dithiophosphate is not less than 92%, and the active ingredient content is not less than 88%.

[0011] As a further technical solution, the modulus of the sodium silicate is 2.4 - 3.0, and the Baume degree is 35 - 45°Bé.

[0012] As a further technical solution, the preparation method of the modified silicone oil is as follows:

[0013] Add the hydrogen-containing silicone oil and allyl polyether into the reaction kettle according to a molar ratio of 1:1 - 1.2, and then add a catalyst accounting for 0.2 - 0.3% of the total mass of the hydrogen-containing silicone oil and allyl polyether;

[0014] Under the protection of nitrogen, heat to 90 - 100 °C and stir and react for 3 - 6 hours;

[0015] After the reaction is completed, remove the unreacted allyl polyether by vacuum distillation to obtain allyl polyether modified silicone oil.

[0016] As a further technical solution, the catalyst is a chloroplatinic acid - isopropanol solution;

[0017] Among them, the mass fraction of chloroplatinic acid in the chloroplatinic acid - isopropanol solution is 20%.

[0018] As a further technical solution, the preparation method of the composite surfactant includes the following steps:

[0019] S1 Mix polyethylene glycol monomethyl ether and epichlorohydrin according to a molar ratio of 1:1.6 - 1.8, then add tetrabutylammonium bromide accounting for 0.3 - 0.5% of the total mass, adjust the temperature to 70 - 75 °C, and adjust the pH to 10.0 with tetrabutylammonium hydroxide, and stir and react for 4 - 6 hours to obtain an intermediate;

[0020] S2 Mix the intermediate obtained above with itaconic anhydride according to a mass ratio of 3:1.2 - 1.6, add 0.2 - 0.3% p-toluenesulfonic acid, and adjust the temperature to 110 - 115 °C for an esterification reaction for 3 hours to prepare a polyether polyol containing double bonds;

[0021] S3 Dissolve the polyether polyol containing double bonds obtained above and sodium bisulfite in deionized water according to a molar ratio of 1:1.4 - 1.8, react at 80 °C for 2 hours, and after separation and drying, obtain.

[0022] A preparation method of a flotation reagent containing a surfactant for gold-antimony ore includes the following steps:

[0023] First, weigh the modified silicone oil, ethyl xanthate, butylammonium black drug, sodium silicate, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant, and water according to the mass parts of each component;

[0024] Then, first add water glass into the reaction kettle, and then add water into the reaction kettle, and stir to dissolve it;

[0025] Sequentially add modified silicone oil, ethyl xanthate, butylammonium dibutyl dithiophosphate, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate and composite surfactant, and stir and mix at a constant temperature for 2 - 3 hours to obtain the flotation reagent for gold antimony ore containing surfactant.

[0026] As a further technical solution, the constant temperature is 35 - 40 °C.

[0027] As a further technical solution, the stirring speed is 750 r / min.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The flotation reagent for gold antimony ore containing surfactant provided by the present invention shows obvious advantages in improving the foam stability effect and gold recovery rate, which is mainly achieved through the synergistic effect among various components.

[0030] The present invention prepares modified silicone oil, which has a unique molecular structure and surface activity, can effectively reduce the surface tension of bubbles, and inhibit the merger and rupture of bubbles. During the flotation process, the stability of the foam can directly be manifested as the ability to continuously and efficiently carry gold antimony ore particles to the surface of the pulp, greatly improving the flotation efficiency. At the same time, by introducing methyl isobutyl carbinol, a large number of tiny bubbles are generated, providing sufficient attachment sites for gold antimony ore. The modified silicone oil and methyl isobutyl carbinol cooperate with each other, greatly prolonging the existence time of bubbles in the pulp, making the flotation process more stable, significantly improving the foam stability effect, and reducing the mineral loss caused by unstable bubbles.

[0031] The present invention uses ethyl xanthate and butylammonium dibutyl dithiophosphate as collectors, which can be highly selectively adsorbed on the surface of gold antimony ore. The combined use of the two broadens the collection range of gold antimony ore, enhances the hydrophobicity of the mineral surface, and makes the adhesion between gold antimony ore and bubbles more firm. At the same time, ethyl thionocarbamate is introduced as an enhanced collector to further enhance the hydrophobicity of the mineral surface, cooperate with ethyl xanthate and butylammonium dibutyl dithiophosphate to better play the collection role, and improve the adhesion efficiency between gold antimony ore and bubbles. And the introduced polyacrylamide as a flocculant can promote the fine-grained gold antimony ore in the pulp to flocculate into clusters, which is not only convenient for bubbles to carry, but also reduces the loss of fine-grained minerals, further improving the gold recovery rate.

[0032] By preparing the composite surfactant, its special molecular structure endows it with excellent surface activity, can significantly reduce the interfacial tension between minerals and bubbles, enhance the adhesion force between minerals and bubbles, and improve the flotation effect. At the same time, the composite surfactant cooperates with other components to further optimize the performance of the flotation reagent.

[0033] Attached drawings of the specification

[0034] Figure 1 is the statistical chart of the gold recovery rate in the experiment of the present invention. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative work shall fall within the protection scope of the present invention.

[0036] The present invention provides a flotation reagent containing a surfactant for gold-antimony ore and a preparation method thereof, and the specific content is as follows:

[0037] The flotation reagent containing a surfactant for gold-antimony ore of the present invention is made from the following raw materials in parts by mass: 8-15 parts of modified silicone oil, 12-20 parts of ethyl xanthate, 8-12 parts of butyl ammonium dithiophosphate, 15-20 parts of water glass, 3-5 parts of polyacrylamide, 3-5 parts of ethyl thionocarbamate, 5-8 parts of methyl isobutyl carbinol, 3-7 parts of sodium carbonate, 6-12 parts of a composite surfactant, and 200-210 parts of water.

[0038] Among them, the purity of ethyl xanthate is not less than 90%, and the active ingredient content is not less than 85%; the purity of butyl ammonium dithiophosphate is not less than 92%, and the active ingredient content is not less than 88%; the modulus of water glass is 2.4-3.0, and the Baume degree is 35-45°Bé.

[0039] The preparation method of the modified silicone oil is as follows:

[0040] Hydrogen-containing silicone oil and allyl polyether are added to a reaction kettle according to a molar ratio of 1:1-1.2, and a chloroplatinic acid-isopropanol solution accounting for 0.2-0.3% of the total mass of hydrogen-containing silicone oil and allyl polyether is added as a catalyst; the mass fraction of chloroplatinic acid is 20%.

[0041] Under the protection of nitrogen, it is heated to 90-100°C and stirred for reaction for 3-6 hours.

[0042] After the reaction is completed, the unreacted allyl polyether is removed by vacuum distillation to obtain allyl polyether modified silicone oil.

[0043] The preparation method of the composite surfactant includes the following steps:

[0044] S1: Mix polyethylene glycol monomethyl ether and epichlorohydrin at a molar ratio of 1:1.6 - 1.8, add tetrabutylammonium bromide accounting for 0.3 - 0.5% of the total mass, adjust the temperature to 70 - 75 °C, adjust the pH to 10.0 with tetrabutylammonium hydroxide, and stir and react for 4 - 6 hours to obtain an intermediate.

[0045] S2: Mix the intermediate obtained above and itaconic anhydride at a mass ratio of 3:1.2 - 1.6, add 0.2 - 0.3% p - toluenesulfonic acid, adjust the temperature to 110 - 115 °C for an esterification reaction for 3 hours to prepare a polyether polyol containing double bonds.

[0046] S3: Dissolve the polyether polyol containing double bonds and sodium bisulfite at a molar ratio of 1:1.4 - 1.8 in deionized water, react at 80 °C for 2 hours, and after separation and drying, obtain a composite surfactant.

[0047] The present invention also provides a preparation method of the flotation reagent, including the following steps:

[0048] First, weigh modified silicone oil, ethyl xanthate, butylammonium dibutyl dithiophosphate, water glass, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant, and water respectively according to the mass parts of each component.

[0049] Then, first add water glass to the reaction kettle, and then add water to the reaction kettle and stir to dissolve it. Sequentially add modified silicone oil, ethyl xanthate, butylammonium dibutyl dithiophosphate, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, and composite surfactant, and stir and mix at a constant temperature under the conditions of 35 - 40 °C and 750 r / min for 2 - 3 hours to obtain the flotation reagent containing surfactant for gold - antimony ore.

[0050] The following are specific examples:

[0051] Example 1

[0052] The flotation reagent containing surfactant for gold - antimony ore in this example is made from the following raw materials in mass parts: 8 parts of modified silicone oil, 12 parts of ethyl xanthate, 8 parts of butylammonium dibutyl dithiophosphate, 15 parts of water glass, 3 parts of polyacrylamide, 3 parts of ethyl thionocarbamate, 5 parts of methyl isobutyl carbinol, 3 parts of sodium carbonate, 6 parts of composite surfactant, and 200 parts of water.

[0053] Among them, the purity of ethyl xanthate is not less than 90%, and the active ingredient content is not less than 85%; the purity of butylammonium dibutyl dithiophosphate is not less than 92%, and the active ingredient content is not less than 88%; the modulus of water glass is 2.4, and the Baume degree is 35 °Bé.

[0054] The preparation method of the modified silicone oil is as follows:

[0055] Add hydrogen-containing silicone oil and allyl polyether into a reaction kettle in a molar ratio of 1:1, and add a chloroplatinic acid-isopropanol solution accounting for 0.2% of the total mass of hydrogen-containing silicone oil and allyl polyether as a catalyst; the mass fraction of chloroplatinic acid is 20%.

[0056] Under the protection of nitrogen, heat to 90 °C and stir and react for 3 hours.

[0057] After the reaction is completed, remove the unreacted allyl polyether by vacuum distillation to obtain allyl polyether-modified silicone oil.

[0058] The preparation method of the composite surfactant includes the following steps:

[0059] S1: Mix polyethylene glycol monomethyl ether and epichlorohydrin in a molar ratio of 1:1.6, add tetrabutylammonium bromide accounting for 0.3% of the total mass, adjust the temperature to 70 °C, adjust the pH to 10.0 with tetrabutylammonium hydroxide, stir and react for 4 hours, and adjust the pH to 10.0 with tetrabutylammonium hydroxide to obtain an intermediate. S2: Mix the above-obtained intermediate with itaconic anhydride in a mass ratio of 3:1.2, add 0.2% p-toluenesulfonic acid, adjust the temperature to 110 °C for esterification reaction for 3 hours to prepare a polyether polyol containing double bonds. S3: Dissolve the polyether polyol containing double bonds and sodium bisulfite in deionized water in a molar ratio of 1:1.4, react at 80 °C for 2 hours, and after separation and drying, obtain the composite surfactant.

[0060] The present invention also provides a preparation method of the flotation reagent, including the following steps:

[0061] First, weigh modified silicone oil, ethyl xanthate, butylammonium black drug, water glass, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant, and water according to the mass parts of each component.

[0062] Then, first add water glass into the reaction kettle, and then add water into the reaction kettle and stir to dissolve it. Sequentially add modified silicone oil, ethyl xanthate, butylammonium black drug, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, and composite surfactant, and stir and mix at a constant temperature of 35 °C and 750 r / min for 2 hours to obtain the flotation reagent containing surfactant for gold-antimony ore.

[0063] Example 2

[0064] The flotation reagent containing surfactant for gold-antimony ore in this example is made from the following raw materials in mass parts: 12 parts of modified silicone oil, 16 parts of ethyl xanthate, 10 parts of butylammonium black drug, 18 parts of water glass, 4 parts of polyacrylamide, 4 parts of ethyl thionocarbamate, 6 parts of methyl isobutyl carbinol, 5 parts of sodium carbonate, 10 parts of composite surfactant, and 205 parts of water.

[0065] Among them, the purity of ethyl xanthate is not less than 90%, and the active ingredient content is not less than 85%; the purity of dibutyl dithiophosphate is not less than 92%, and the active ingredient content is not less than 88%; the modulus of water glass is 2.4, and the Baume degree is 35°Bé.

[0066] The preparation method of the modified silicone oil is as follows:

[0067] Add hydrogen-containing silicone oil and allyl polyether into the reaction kettle according to the molar ratio of 1:1.1, and add a chloro-platinic acid-isopropanol solution accounting for 0.26% of the total mass of hydrogen-containing silicone oil and allyl polyether as a catalyst; the mass fraction of chloro-platinic acid is 20%.

[0068] Under the protection of nitrogen, heat to 95°C and stir and react for 4 hours.

[0069] After the reaction is completed, remove the unreacted allyl polyether by vacuum distillation to obtain allyl polyether modified silicone oil.

[0070] The preparation method of the composite surfactant includes the following steps:

[0071] S1: Mix polyethylene glycol monomethyl ether and epichlorohydrin according to the molar ratio of 1:1.7, add tetrabutylammonium bromide accounting for 0.4% of the total mass, adjust the temperature to 72°C, adjust the pH to 10.0 with tetrabutylammonium hydroxide, and stir and react for 5 hours to obtain an intermediate.

[0072] S2: Mix the above-obtained intermediate with itaconic anhydride according to the mass ratio of 3:1.5, add 0.24% p-toluenesulfonic acid, adjust the temperature to 112°C and carry out an esterification reaction for 3 hours to prepare a polyether polyol containing double bonds.

[0073] S3: Dissolve the polyether polyol containing double bonds and sodium bisulfite in deionized water according to the molar ratio of 1:1.5, react at 80°C for 2 hours, and after separation and drying, obtain the composite surfactant.

[0074] The present invention also provides a preparation method of the flotation reagent, including the following steps:

[0075] First, weigh the modified silicone oil, ethyl xanthate, dibutyl dithiophosphate, water glass, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant, and water according to the mass parts of each component.

[0076] Then, first add water glass to the reaction kettle, and then add water to the reaction kettle and stir to dissolve it. Add the modified silicone oil, ethyl xanthate, dibutyl dithiophosphate, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, and composite surfactant in sequence, and stir and mix at a constant temperature of 38°C and 750 r / min for 2 hours to obtain the flotation reagent containing surfactant for gold-antimony ore.

[0077] Example 3

[0078] The flotation reagent containing surfactant for gold-antimony ore in this example is made from the following raw materials in parts by mass: 15 parts of modified silicone oil, 20 parts of ethyl xanthate, 12 parts of butylammonium dithiophosphate, 20 parts of water glass, 5 parts of polyacrylamide, 5 parts of ethyl thionocarbamate, 8 parts of methyl isobutyl carbinol, 7 parts of sodium carbonate, 12 parts of composite surfactant, and 210 parts of water.

[0079] Among them, the purity of ethyl xanthate is not less than 90%, and the active ingredient content is not less than 85%; the purity of butylammonium dithiophosphate is not less than 92%, and the active ingredient content is not less than 88%; the modulus of water glass is 3.0, and the Baume degree is 45°Bé.

[0080] The preparation method of the modified silicone oil is as follows:

[0081] Add hydrogen-containing silicone oil and allyl polyether into the reaction kettle according to the molar ratio of 1:1.2, and add a solution of chloroplatinic acid-isopropanol accounting for 0.3% of the total mass of hydrogen-containing silicone oil and allyl polyether as a catalyst; the mass fraction of chloroplatinic acid is 20%.

[0082] Under the protection of nitrogen, heat to 100°C and stir and react for 6 hours.

[0083] After the reaction is completed, remove the unreacted allyl polyether by vacuum distillation to obtain allyl polyether modified silicone oil.

[0084] The preparation method of the composite surfactant includes the following steps:

[0085] S1: Mix polyethylene glycol monomethyl ether and epichlorohydrin according to the molar ratio of 1:1.8, add tetrabutylammonium bromide accounting for 0.5% of the total mass, adjust the temperature to 75°C, adjust the pH to 10.0 with tetrabutylammonium hydroxide, and stir and react for 6 hours to obtain an intermediate.

[0086] S2: Mix the above-obtained intermediate with itaconic anhydride according to the mass ratio of 3:1.6, add 0.3% of p-toluenesulfonic acid, adjust the temperature to 115°C for esterification reaction for 3 hours to prepare a polyether polyol containing double bonds.

[0087] S3: Dissolve the polyether polyol containing double bonds and sodium bisulfite in deionized water according to the molar ratio of 1:1.8, react at 80°C for 2 hours, and after separation and drying, obtain the composite surfactant.

[0088] The present invention also provides a preparation method of this flotation reagent, including the following steps:

[0089] First, weigh the modified silicone oil, ethyl xanthate, dibutyl dithiophosphate, water glass, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant, and water according to the mass parts of each component.

[0090] Then, first add the water glass into the reaction kettle, and then add water into the reaction kettle and stir to dissolve it. Sequentially add the modified silicone oil, ethyl xanthate, dibutyl dithiophosphate, polyacrylamide, ethyl thionocarbamate, methyl isobutyl carbinol, sodium carbonate, and composite surfactant, and stir and mix them at a constant temperature of 40 °C and 750 r / min for 3 hours to obtain the flotation reagent containing surfactant for gold-antimony ore.

[0091] Comparative Example 1:

[0092] Based on Example 1, the modified silicone oil is not added, and the other technical solutions are the same as those in Example 1.

[0093] Comparative Example 2:

[0094] Based on Example 1, the modified silicone oil is replaced with unmodified hydrogen-containing silicone oil, and the other technical solutions are the same as those in Example 1.

[0095] Comparative Example 3:

[0096] Based on Example 1, the composite surfactant is not added, and the other technical solutions are the same as those in Example 1.

[0097] Test:

[0098] Take the gold-antimony symbiotic ore (Au:Sb = 1:0.3 - 0.8) as the test object;

[0099] Process flow:

[0100] First, coarsely crush it to 3 mm, and then ball mill it to 200 mesh (70% passing rate). The dosage of the reagent in the examples and comparative examples is 3.2 kg / t, and the pulp concentration is 30%; after one roughing and one cleaning flotation, the thickness of the roughing foam layer is 8 - 10 cm; compare the foam stability of each group of samples, as shown in Table 1:

[0101] Table 1

[0102] Foam stability min Example 1 73.5 Example 2 72.8 Example 3 74.1 Comparative Example 1 55.9 Comparative Example 2 60.2 Comparative Example 3 47.6

[0103] As can be seen from Table 1, the flotation reagent containing surfactant for gold-antimony ore prepared by the present invention has high foam stability.

[0104] Compare the gold and antimony recovery rates of each group, as shown in Table 2:

[0105] Table 2

[0106]

[0107]

[0108] As can be seen from Table 2, the flotation reagent containing surfactant prepared by the present invention for stibnite can greatly improve the recovery rates of gold and antimony.

[0109] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification.

Claims

1. A flotation agent containing surfactant for gold-antimony ore, characterized in that: The invention is prepared from the following raw materials in parts by weight: 8-15 parts of modified silicone oil, 12-20 parts of ethyl xanthate, 8-12 parts of butyl ammonium black medicine, 15-20 parts of water glass, 3-5 parts of polyacrylamide, 3-5 parts of ethylthiocarbamate, 5-8 parts of methyl isobutyl carbinol, 3-7 parts of sodium carbonate, 6-12 parts of composite surfactant and 200-210 parts of water.

2. The flotation reagent containing surfactant for gold-antimony ore according to claim 1, characterized in that: The purity of the ethyl xanthate is not less than 90%, and the content of active ingredients is not less than 85%.

3. The flotation reagent containing surfactant for gold-antimony ore according to claim 1, characterized in that: The purity of the butyl ammonium black medicine is not less than 92%, and the active ingredient content is not less than 88%.

4. The flotation reagent containing surfactant for gold-antimony ore according to claim 1, characterized in that: The modulus of the water glass is 2.4-3.0, and the Baume degree is 35-45°Bé.

5. The flotation reagent containing surfactant for gold-antimony ore according to claim 1, characterized in that: The preparation method of the modified silicone oil is as follows: Add hydrogen-containing silicone oil and allyl polyether into a reaction kettle at a molar ratio of 1:1-1.2, and then add a catalyst accounting for 0.2-0.3% of the total mass of the hydrogen-containing silicone oil and allyl polyether; Under nitrogen protection, heat to 90-100°C and stir to react for 3-6 hours; After the reaction is completed, unreacted allyl polyether is removed by distillation under reduced pressure to obtain allyl polyether-modified silicone oil.

6. The flotation reagent containing surfactant for gold-antimony ore according to claim 5, characterized in that: The catalyst is chloroplatinic acid-isopropanol solution; Wherein, the mass fraction of chloroplatinic acid in the chloroplatinic acid-isopropanol solution is 20%.

7. The flotation reagent containing surfactant for gold-antimony ore according to claim 1, characterized in that: The method for preparing the composite surfactant comprises the following steps: S1: polyethylene glycol monomethyl ether and epichlorohydrin are mixed in a molar ratio of 1:1.6-1.8, and then 0.3-0.5% of tetrabutylammonium bromide is added, the temperature is adjusted to 70-75° C., the pH is adjusted to 10.0 with tetrabutylammonium hydroxide, and the reaction is stirred for 4-6 hours to obtain an intermediate; S2: mixing the intermediate obtained above with itaconic anhydride in a mass ratio of 3:1.2-1.6, adding 0.2-0.3% p-toluenesulfonic acid, adjusting the temperature to 110-115° C. for esterification reaction for 3 hours to obtain a polyether polyol containing a double bond; S3: dissolving the above-obtained double-bond polyether polyol and sodium bisulfite in deionized water at a molar ratio of 1:1.4-1.8, reacting at 80° C. for 2 hours, separating, and drying to obtain.

8. The method for preparing a flotation agent containing a surfactant for gold-antimony ore according to claim 1, characterized in that: The following steps are involved: Firstly, modified silicone oil, ethyl xanthate, butyl ammonium xanthate, water glass, polyacrylamide, ethylthiocarbamate, methyl isobutyl carbinol, sodium carbonate, composite surfactant and water were weighed respectively according to the mass fraction of each component; Then, first add water glass into the reactor, then add water into the reactor and stir to dissolve it; Modified silicone oil, ethyl xanthate, butyl ammonium black medicine, polyacrylamide, ethylthiocarbamate, methyl isobutyl carbinol, sodium carbonate and a composite surfactant are added in sequence, and stirred and mixed at a constant temperature for 2-3 hours to obtain the flotation agent containing surfactant for the gold-antimony ore.

9. The method for preparing a flotation agent containing a surfactant for gold-antimony ore according to claim 8, characterized in that: The constant temperature is 35-40°C.

10. The method for preparing a flotation agent containing a surfactant for gold-antimony ore according to claim 8, characterized in that: The stirring speed is 750 r / min.

Images