CN113102111A - Oxidized ore flotation agent and preparation method and application thereof - Google Patents
Oxidized ore flotation agent and preparation method and application thereof Download PDFInfo
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- CN113102111A CN113102111A CN202110305951.XA CN202110305951A CN113102111A CN 113102111 A CN113102111 A CN 113102111A CN 202110305951 A CN202110305951 A CN 202110305951A CN 113102111 A CN113102111 A CN 113102111A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
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Abstract
The invention discloses an oxidized ore flotation agent and a preparation method and application thereof, wherein the main raw materials of the oxidized ore flotation agent comprise sodium aliphatate, polyoxyethylene sorbitan fatty acid ester, alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer, amphoteric surfactant and alkyl sulfonate anionic surfactant. The method can efficiently recover the low-grade scheelite under the appropriate condition, is particularly suitable for the flotation recovery operation of the low-grade scheelite in the ore pulp environment with lower temperature (5-20 ℃) and higher pH value (10-12), and has strong adaptability to the ore pulp condition, strong hard water resistance and wide applicable ore pulp pH range.
Description
Technical Field
The invention relates to the field of oxidized ore flotation, in particular to a flotation agent for oxidized ore, especially scheelite, and a preparation method and application thereof.
Background
Tungsten is widely applied to the fields of chemistry and chemical engineering, military and national defense, photoelectric materials, social and civil life and the like. In nature, only wolframite and scheelite mining and utilization technologies are relatively mature, and the recycling value is relatively high. In recent years, with the growing demand for tungsten resources, the reserves of black tungsten resources, which are low in recycling cost, have been exhausted and depleted, and development and utilization of white tungsten resources have been in the spotlight. Scheelite is mainly recovered by flotation.
The scheelite recovered by flotation usually adopts fatty acid and soaps thereof as collecting agents, and the pH range of the ore pulp is suitable to be 8-9. The dispersing ability of the fatty acid collecting agent is poor in a low-temperature environment, so that the beneficiation efficiency is reduced, the dosage of the agent is increased, and the beneficiation cost is increased sharply while the beneficiation indexes are deteriorated. When the temperature of the ore pulp is lower than 30 ℃, the dispersing ability of the fatty acid is influenced, the fatty acid is saponified, the dispersing ability of the fatty acid in a low-temperature environment can be improved to a certain extent, the flotation effect in the low-temperature environment is improved, and when the temperature of the ore pulp is lower than 15 ℃, the dispersing ability of the sodium fatty acid can be greatly influenced. For example, in a certain locyang scheelite concentrating mill, the ore pulp temperature is reduced to below 8 ℃ due to the influence of extremely cold weather in 2017 in winter, the recovery rate is reduced by up to 5 percent, so that a large amount of resources are lost, the economic benefit of an enterprise is greatly reduced, the pressure of a tailing pond is increased, and the environmental protection pressure is increased; in addition, because the precipitation is reduced in winter, the cycle of water for beneficiation is shortened, inevitable ions in ore pulp are accumulated continuously, the pH value of the ore pulp is increased continuously, and timely adjustment is difficult, so that another important factor causing poorer beneficiation indexes in winter is also provided.
For a long time, in order to solve the defect of poor flotation effect of fatty acid and soap thereof in low-temperature environment, a plurality of improvement measures are proposed by related technicians, such as: the low-temperature flotation combined reagent for efficiently collecting scheelite and the preparation method thereof disclosed in the Chinese patent CN104984832 only achieve certain effects in laboratory small-sized pure mineral flotation tests, the applicable flotation temperature range is 18-25 ℃, the pH range of ore pulp is 6.5-8.0, and the scheelite flotation at lower temperature and higher ore pulp pH value cannot be met. In addition, liquid bromine which is dangerous, highly toxic and highly volatile is involved in the production process. According to the scheelite flotation collector and the preparation method thereof disclosed by the Chinese patent CN 108480055, the adopted hydroximic acid collector is expensive, the applicable temperature range is 12-20 ℃, the pH value of ore pulp is 9.5-10.0 in the use process, and the lower ore pulp temperature and the more complex ore pulp condition cannot be met.
Disclosure of Invention
The invention aims to provide an oxidized ore flotation agent, and a preparation method and application thereof, so as to solve the problem that the oxidized ore flotation agent such as scheelite, fluorite and the like has poor separation effect in a low-temperature high-alkali environment.
In order to accomplish the above objects, according to one aspect of the present invention, there is provided an oxidized ore flotation agent whose main raw materials include sodium fatty acid, polyoxyethylene sorbitan fatty acid ester, polymer of α -hydro- ω -hydroxy (oxy-1, 2-ethanediyl), amphoteric surfactant, and anionic surfactant of alkylsulfonate type.
Preferably, the oxidized ore flotation agent comprises, by weight, 86-95 parts of sodium fatty acid, 1-3 parts of polyoxyethylene sorbitan fatty acid ester, 1-3 parts of alpha-hydrogen-omega-hydroxyl (oxy-1, 2-ethanediyl) polymer, 1-5 parts of amphoteric surfactant and 1-3 parts of alkyl sulfonate anionic surfactant.
Preferably, the sodium fatty acid is prepared by mixing and saponifying one or two of soybean oil fatty acid, rapeseed oil fatty acid, cottonseed oil fatty acid, rice bran oil fatty acid and peanut oil fatty acid in any proportion.
Preferably, the sodium fatty acid is soybean oil fatty acid or peanut oil fatty acid, the oleic acid content of the two fatty acids is relatively high, and the collecting capacity is relatively strong.
Preferably, the polyoxyethylene sorbitan fatty acid ester comprises one or more of polyoxyethylene sorbitan laurate, polyoxyethylene sorbitan stearate and polyoxyethylene sorbitan oleate.
The polyoxyethylene sorbitan fatty acid ester is a nonionic surfactant and has good emulsifying and penetrating properties, and foaming, foam stabilizing and action; the stability is high, the water-soluble polymer is not ionized in aqueous solution, and is not influenced by strong electrolyte, strong acid and strong alkali, and is not influenced by calcium and magnesium ions in hard water; has good compatibility with other types of surfactants. The method can effectively improve the solubility of the sodium aliphatate in low-temperature ore pulp and the adaptability to different ore pulp conditions, and improve the stability of foam in the flotation process.
Preferably, the molecular weight of the alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer is 400-6000.
The alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer can enhance the foamability and foam toughness of the sodium aliphatate in the low-temperature flotation process and increase the separation interface.
Too high molecular weight of the alpha-hydrogen-omega-hydroxyl (oxy-1, 2-ethanediyl) polymer can affect the scheelite recovery rate; too low a molecular weight results in insufficient foaming capacity.
Preferably, the amphoteric surfactant has a quaternary ammonium inner salt structure and a carboxyl functional group.
Preferably, the amphoteric surfactant is one or more of alkyl dimethyl amine ethyl lactone, alkyl amidopropyl dimethyl amine ethyl lactone, alkyl dimethyl sulfopropyl ethyl lactone and alkyl dimethyl hydroxypropyl phosphate ethyl lactone
The amphoteric surfactant has a quaternary ammonium inner salt structure and a carboxyl functional group, has positive charges in molecules, can generate electrostatic attraction with fatty acid anions, and weakens the electrostatic repulsion between the anions and the anions in the hydrophilic groups of the fatty acid, so that the concentration of the surfactant adsorbed on the surface of the bubble-liquid is higher, the mechanical strength of a liquid film is enhanced, and meanwhile, the arrangement of the surfactant is more compact, so that gas is less prone to permeating from the liquid film, the foam breakage probability is lower, and the foam volume is increased. In addition, alkyl dimethylamine ethyl lactone, alkyl amide propyl dimethylamine ethyl lactone, alkyl dimethyl sulfopropyl amine ethyl lactone and alkyl dimethyl hydroxypropyl phosphoric acid amine ethyl lactone have excellent stability and compatibility. In the high pH value ore pulp, the buffering effect can be achieved, and the appropriate capacity of the collecting agent is improved.
Preferably, the amphoteric surfactant is an alkyl dimethyl amine ethyl lactone.
Preferably, the alkyl sulfonate anionic surfactant is one or more of petroleum sodium sulfonate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate.
The alkyl sulfonate anionic surfactant is easy to dissolve in water, and can effectively improve the dispersibility of the sodium aliphatate in low-temperature ore pulp.
Another object of the present invention is to provide a method for preparing an oxidized ore flotation agent, comprising the steps of: and (3) adding the components of the flotation reagent into a stirring barrel filled with warm water according to the weight ratio, and stirring for 0.5-1 h.
Preferably, the temperature of the warm water is 50-65 ℃.
The warm water improves the dissolving speed of the medicament, and simultaneously, the structure and the performance of the medicament cannot be damaged due to overhigh temperature.
Preferably, the ratio of the flotation reagent to the water in parts by weight is 5-20: 80-95.
Further preferably, the ratio of the flotation reagent to the water is 5:95 by weight.
The concentration of 5 percent is convenient to control the adding amount of the medicament while ensuring the medicament to be dissolved
The invention also aims to provide the application of the oxidized ore flotation agent, the oxidized ore flotation agent can be applied to the flotation of low-grade scheelite, and the WO3 content is 0.03-0.18%.
Preferably, the oxidized ore flotation agent can be applied to the flotation of low-temperature scheelite, and the pulp temperature is 5-20 ℃.
Preferably, the oxidized ore flotation agent can be applied to ore pulp with the pH value ranging from 4 to 12.
Preferably, the oxidized ore flotation agent is applied to ore pulp with the pH value ranging from 10 to 12.
Preferably, in the application of the oxidized ore flotation agent, the addition amount of the oxidized ore flotation agent is 150-450 g per ton of raw ore.
The invention is further explained below:
the oxidized ore flotation agent has good collecting capacity and foaming capacity under the condition of low temperature, and ensures that the recovery rate of the scheelite under the condition of low-temperature high-alkali ore pulp is greatly improved or the dosage of the medicament is lower than that of the fatty acid and the soap thereof which are used independently. The main principle is as follows:
1. the polyoxyethylene sorbitan fatty acid ester is not influenced by strong electrolyte, strong acid and strong base, can effectively improve the solubility of the sodium fatty acid in low-temperature pulp and the adaptability to different pulp conditions, and improves the stability of foam in the flotation process.
2. The alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer can enhance the foamability and foam toughness of the sodium aliphatate in the low-temperature flotation process and increase the separation interface.
3. The amphoteric surfactant has a quaternary ammonium inner salt structure and anion functional groups such as carboxylate radical and the like, so that the amphoteric surfactant has excellent stability and compatibility under acidic and alkaline conditions. In the high pH value ore pulp, the buffering effect can be achieved, and the appropriate capacity of the collecting agent is improved.
4. The alkyl sulfonate anionic surfactant is easy to dissolve in water, and can effectively improve the dispersibility of the sodium aliphatate in low-temperature ore pulp. When the sodium salt solution is used together with polyoxyethylene sorbitan fatty acid ester, a stronger positive synergistic effect can be generated between the polyoxyethylene sorbitan fatty acid ester and the polyoxyethylene sorbitan fatty acid ester, and the surface tension of the sodium salt solution is obviously reduced. In a low-temperature environment, molecules of alkyl sulfonate and polyoxyethylene sorbitan fatty acid ester are directionally arranged on a gas-liquid two-phase interface to replace water molecules and gas molecules, wherein hydrophilic groups in the molecules face a water phase, hydrophobic groups face a gas phase, the interaction between the water molecules on the interface and the gas molecules disappears, the interaction between the hydrophilic groups of the surfactant and the water molecules and the interaction between the hydrophobic groups of the surfactant and the gas molecules are newly generated, the two interactions are much larger than the interaction between the water molecules and the gas molecules, and the surface tension is greatly reduced finally. This means that the critical micelle concentration of the whole system is reduced, indicating that the interior of the collector solution is more likely to aggregate to form micelles. The reduction of the concentration value of the critical micelle means that the effects of solubilization, emulsification and the like of the collecting agent are enhanced, and the solubility and the dispersibility of the sodium aliphatate in low-temperature and high-alkali environments are improved more efficiently, so that the using amount of the capturing agent is reduced, and the recovery rate is improved.
The oxidized ore flotation agent has the following advantages:
the oxidized ore flotation agent is prepared by mixing raw materials of sodium fatty acid, polyoxyethylene sorbitan fatty acid ester, alpha-hydrogen-omega-hydroxyl (oxy-1, 2-ethanediyl) polymer, amphoteric surfactant and alkyl sulfonate anionic surfactant, and has the advantages of easily obtained raw materials, simple production process, low cost, and great practical popularization value and market potential.
Secondly, the oxidized ore flotation agent has good low-temperature solubility and dispersibility under the synergistic effect of different surfactants, and can effectively solve the problems of large consumption of the collecting agent and low recovery rate in the flotation process of oxidized ores such as scheelite and the like in a low-temperature environment.
And the nonionic surfactant and the amphoteric surfactant in the oxidized ore flotation agent have good adaptability to ore pulps with different pH values, so that the broad-spectrum applicability of the combined collecting agent is improved.
Drawings
FIG. 1 shows a flow of an oxidized ore flotation agent formulation;
FIG. 2 shows a scheelite roughing process.
Detailed Description
Example 1
According to the figure 1, the flotation agent is prepared by weighing 95 parts of soybean oil fatty acid sodium, 1 part of polyoxyethylene sorbitan laurate, 1 part of alpha-hydrogen-omega-hydroxy (oxygen-1, 2-ethanediyl) polymer (molecular weight 400), 1 part of alkyl dimethyl amine ethyl lactone and 1 part of sodium dodecyl benzene sulfonate. Adding the components of the flotation agent into a stirring tank filled with warm water at 65 ℃, and stirring for 1 h. The weight ratio of the flotation agent to the warm water is 5: 95. Adopting the flotation agent to carry out low-temperature roughing practice on the wolframite of Luoyang Hua mining company Limited according to the flow of figure 2, wherein WO in the raw ore3The content is 0.18%.
Table 1 example 1 flotation results
Under the environment of low-temperature high-alkali ore pulp with the pH value of 10.24 and the temperature of 5-8 ℃, the recovery rate of the flotation agent provided by the embodiment 1 of the invention is 10.86 percent higher than that of the conventional combined agent of oxidized paraffin soap and sodium oleate in the rough concentration of white tungsten, and the dosage of the agent is reduced by 130 g/t. The flotation agent prepared in the embodiment 1 of the invention has good collecting capacity under the environment of low-temperature high-alkali complex ore pulp.
Example 2
86 parts of sodium fatty acid obtained by mixing and saponifying rapeseed oil fatty acid and cottonseed oil fatty acid, 3 parts of polyoxyethylene sorbitan stearate, 3 parts of alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer (molecular weight 6000), 5 parts of alkyl dimethyl hydroxypropyl phosphate betaine and 3 parts of sodium dodecyl sulfate. Adding the components of the flotation agent into a stirring tank filled with warm water at 60 ℃, and stirring for 0.5 h. The weight ratio of the flotation agent to the warm water is 20: 80. The flotation agent is adopted to carry out low-temperature rough concentration practice on the scheelite of Lu-Ore limited company of Lu Yang, and the WO3 content in the raw ore is 0.034%.
Table 2 example 2 flotation results
Under the condition of normal ore pulp (25 ℃, pH: 9.51), the flotation index of the scheelite by taking sodium oleate as a collecting agent is that the recovery rate is 60.46 percent, and the grade is 1.02 percent; under the condition of normal pH value at low temperature (5 ℃, pH:9.55), the flotation index of sodium oleate which is used as a collecting agent scheelite is that the recovery rate is 43.59 percent, and the grade is 1.24 percent; under the conditions of low temperature and high pH value (5 ℃, pH:11.95), the flotation index of sodium oleate which is used as a collecting agent scheelite is 46.05 percent of recovery rate and 1.07 percent of grade; under the conditions of normal temperature and high pH value (25 ℃, pH:11.95), the flotation index of sodium oleate which is used as a collecting agent scheelite is 55.23 percent of recovery rate and 0.98 percent of grade.
Under the condition of normal ore pulp (25 ℃, pH: 9.51), the flotation agent of the example 2 has the index of recovery rate of 88.36 percent and the grade of 1.02 percent in scheelite flotation; under the condition of normal pH value at low temperature (5 ℃, pH:9.55), the flotation agent of the oil example 2 has the flotation index of 86.11 percent of recovery rate and 1.24 percent of grade in scheelite; under the conditions of low temperature and high pH value (5 ℃, pH:11.95), the flotation agent of the oil example 2 has the flotation index of 74.20 percent of recovery rate and 1.07 percent of grade in scheelite flotation; under normal temperature and high pH conditions (25 ℃, pH:11.95), the flotation agent of oil example 2 has a scheelite flotation index of recovery rate of 78.47% and grade of 0.98%.
According to the test results, the flotation indexes obtained by using the flotation agent in the embodiment 2 in the low-temperature high-alkali environment are all better than the indexes obtained by using sodium oleate in various complex ore pulp environments, and the using amount is 50g/t lower.
Example 3
90 parts of sodium fatty acid obtained by mixing and saponifying rice bran oil fatty acid and peanut oil fatty acid, 2 parts of polyoxyethylene sorbitan stearate, 2 parts of alpha-hydrogen-omega-hydroxy (oxygen-1, 2-ethanediyl) polymer (molecular weight 4000), 3 parts of alkyl amide propyl dimethyl aminolactone and 3 parts of sodium petroleum sulfonate. The components of the flotation agent and the components of the flotation agent in Table 3 are respectivelyAdding into a stirring tank filled with warm water of 50 ℃, and continuously stirring for 1 h. The weight ratio of the flotation agent to the warm water is 20: 80. The flotation agents are respectively adopted to carry out the rough concentration practice on the Luoyang molybdenum industry group scheelite in which WO is contained3The content is 0.12%, the temperature of the ore pulp in the flotation process is 5-8 ℃, the pH value of the ore pulp is 11.5, and the results are shown in Table 4.
TABLE 3 composition of flotation agents
Table 4 flotation results of example 4
| Flotation agent | Dosage per gram t-1 | WO3Percent recovery% | WO in rough concentrates3Grade/% |
| First flotation agent | 220 | 65.95 | 1.44 |
| Flotation agent II | 220 | 74.53 | 1.44 |
| Flotation agent III | 220 | 70.92 | 1.44 |
| Flotation agent No. four | 220 | 72.42 | 1.44 |
| No. five flotation agent | 220 | 73.20 | 1.44 |
| Flotation agent of example 3 | 220 | 88.25 | 1.44 |
The results of comparative tests show that the components of the polyoxyethylene sorbitan fatty acid ester, the alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer, the amphoteric surfactant and the alkyl sulfonate anionic surfactant are cooperated to use, so that the collecting capacity of the sodium fatty acid under the conditions of low temperature and high alkali is greatly improved, and the synergistic effect is the greatest when the specific addition amounts are added.
Example 4
88 parts of fatty acid sodium obtained by mixing and saponifying rapeseed oil fatty acid and soybean oil fatty acid, 3 parts of polyoxyethylene sorbitan oleate, 1 part of alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer (molecular weight 3000), 5 parts of alkyl dimethyl sulfopropyl betaine and 3 parts of sodium dodecyl benzene sulfonate. Adding the components of the flotation agent into a stirring tank filled with warm water at 55 ℃, and continuously stirring for 1 hour. The weight ratio of the flotation agent to the warm water is 10: 90. The flotation agent is adopted to carry out rough concentration practice on the scheelite of Luoyang Yulu company, and WO is contained in the crude ore3The content is 0.08%.
Table 5 flotation results of example 4
Under the condition of normal ore pulp (25 ℃, pH value: 9.50), the flotation index of the soybean oil sodium fatty acid as the collecting agent scheelite is 77.97 percent of recovery rate and 0.68 percent of grade; under the conditions of low temperature and high pH value (8 ℃, pH:11.48), the flotation index of the soybean oil sodium fatty acid used as a collector scheelite is reduced to 63.39 percent of recovery rate and 0.81 percent of grade; under the condition of normal ore pulp (25 ℃, pH: 9.50), the flotation agent of the example 4 has the flotation index of 88.52 percent of recovery rate and 0.68 percent of grade in scheelite; under the conditions of low temperature and high pH value (8 ℃, pH:11.48), the flotation index of the flotation agent of the example 4 in the scheelite flotation is 83.52 percent of recovery rate and 0.81 percent of grade. From the test results, it is understood that the recovery rate of scheelite can be effectively improved under the conditions of low temperature and high pH value by using the flotation agent of example 4, and the amount of the flotation agent of example 4 can be reduced by 100 g/t.
Claims (10)
1. The oxidized ore flotation agent is characterized in that main raw materials of the oxidized ore flotation agent comprise sodium fatty acid, polyoxyethylene sorbitan fatty acid ester, alpha-hydrogen-omega-hydroxyl (oxy-1, 2-ethanediyl) polymer, amphoteric surfactant and alkyl sulfonate anionic surfactant.
2. The oxidized ore flotation agent according to claim 1, wherein the raw materials of the oxidized ore flotation agent comprise, by weight, 86-95 parts of sodium fatty acid, 1-3 parts of polyoxyethylene sorbitan fatty acid ester, 1-3 parts of alpha-hydro-omega-hydroxy (oxy-1, 2-ethanediyl) polymer, 1-5 parts of amphoteric surfactant and 1-3 parts of alkyl sulfonate anionic surfactant.
3. The oxidized ore flotation agent according to claim 1, wherein the sodium fatty acid is prepared by mixing one or two of soybean oil fatty acid, rapeseed oil fatty acid, cottonseed oil fatty acid, rice bran oil fatty acid and peanut oil fatty acid in any proportion and then saponifying the mixture; further preferably, the sodium fatty acid is soybean oil fatty acid or peanut oil fatty acid.
4. The oxidized ore flotation agent of claim 1, wherein the polyoxyethylene sorbitan fatty acid ester comprises one or more of polyoxyethylene sorbitan laurate, polyoxyethylene sorbitan stearate, and polyoxyethylene sorbitan oleate; preferably, the molecular weight of the alpha-hydrogen-omega-hydroxyl (oxygen-1, 2-ethanediyl) polymer is 400-6000.
5. An oxidized ore flotation agent according to claim 1, characterized in that the amphoteric surfactant has an internal quaternary ammonium salt structure and anionic functional groups such as carboxylate; preferably, the amphoteric surfactant is one or more of alkyl dimethylamine caprolactone, alkyl amidopropyl dimethylamine caprolactone, alkyl dimethyl sulfopropyl amine caprolactone and alkyl dimethyl hydroxypropyl phosphate amine caprolactone; preferably, the amphoteric surfactant is alkyl dimethyl amine ethyl lactone; preferably, the alkyl sulfonate anionic surfactant is one or more of petroleum sodium sulfonate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate.
6. The process for producing an oxidized ore flotation agent according to any one of claims 1 to 5, characterized by comprising the steps of: adding the components of the flotation reagent into a stirring barrel filled with warm water according to the weight ratio, and stirring for 0.5-1 h; preferably, the temperature of the warm water is 50-65 ℃; preferably, the ratio of the flotation reagent to the water in parts by weight is 5-20: 80-95; further preferably, the ratio of the flotation reagent to the water in parts by weight is 5: 95.
7. use of an oxidized ore flotation agent according to any one of claims 1 to 5 in the flotation of scheelite.
8. The use according to claim 7, wherein the scheelite has a WO3 content of 0.03% to 0.18%.
9. The application of the oxidized ore flotation agent according to claim 7, wherein the oxidized ore flotation agent can be applied to the flotation of low-temperature scheelite, and the pulp temperature is 5-20 ℃; preferably, the oxidized ore flotation agent can be applied to high ore pulp with the pH value ranging from 4 to 12.
10. The use according to claim 7, wherein the oxidized ore flotation agent is added in an amount of 150-450 g per ton of raw ore.
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