Oxidized antimony ore flotation collecting agent and preparation method and application thereof

Abstract

The invention belongs to the technical field of mineral flotation, and particularly relates to a antimony oxide ore flotation collecting agent which comprises the following raw materials in parts by weight: 3-6 parts of fatty acid hydroximic acid salt, 2-4 parts of oleic acid, 1-2 parts of tall oil, 0.5-1 part of lauryl sodium sulfate and 0.5-1 part of fatty alcohol-polyoxyethylene ether. The fatty acid hydroximic acid salt is prepared according to the following method: adding fatty acid methyl ester into a hydroxylamine aqueous solution, controlling the temperature to be below 30 DEG C, slowly dropwise adding a sodium hydroxide aqueous solution, heating to 40-50 DEG C after dropwise adding, and reacting for 6-9 hours; the molar ratio of fatty acid methyl ester to hydroxylamine to sodium hydroxide is 1: (1.1-1.2): (2.2-2.3). The antimony oxide ore flotation collecting agent is applied to antimony oxide ore flotation, the grade and the recovery rate of antimony oxide ore can be remarkably improved, and the antimony oxide ore flotation collecting agent can be directly added into a flotation tank and is convenient to use.

Description

Technical Field

[0001] The invention belongs to the technical field of mineral flotation, and in particular relates to an antimony oxide ore flotation collector and a preparation method and application thereof. Background Art

[0002] Antimony resources, as an important mineral resource in my country, are widely used in flame retardants, batteries, metal alloys, chemicals and other fields. In recent years, with the rapid consumption of antimony sulfide resources, the crisis of antimony resources has gradually emerged. Therefore, the recovery of antimony oxide ore has received more and more attention. Flotation is a common method for recovering antimony oxide ore, but due to the low hardness of antimony oxide, it is fragile and severely muddy, has strong hydrophilicity, and has similar properties to gangue minerals such as quartz. Therefore, it is difficult to achieve efficient separation of antimony using conventional flotation agents. To this end, it is necessary to develop a collector that can efficiently recover antimony oxide ore in order to improve the flotation index of antimony ore. Summary of the invention

[0003] The present invention aims to provide a collector for the flotation step of antimony oxide ore, so as to efficiently recover the antimony oxide ore and obtain good flotation indexes.

[0004] In order to achieve the above object, the scheme of the present invention is: an antimony oxide ore flotation collector, the raw materials of which include the following components by weight: 3-6 parts of fatty acid hydroxamate, 2-4 parts of oleic acid, 1-2 parts of tall oil, 0.5-1 part of sodium lauryl sulfate, and 0.5-1 part of fatty alcohol polyoxyethylene ether.

[0005] The present invention also provides a method for preparing the above-mentioned antimony oxide ore flotation collector, comprising the following steps: weighing fatty acid hydroxamate, oleic acid, tall oil, sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether by weight, reacting at 40-50° C. for 1-3 hours, and obtaining the antimony oxide ore flotation collector.

[0006] The present invention also provides an application of the antimony oxide ore flotation collector in the flotation of antimony oxide ore.

[0007] Optionally, the fatty acid hydroxamate is prepared according to the following method: fatty acid methyl ester is added to a hydroxylamine aqueous solution, and a sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C., and after the addition is completed, the temperature is raised to 40-50° C. and the reaction is carried out for 6-9 hours to obtain fatty acid hydroxamate.

[0008] Optionally, the molar ratio between the fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:(1.1-1.2):(2.2-2.3).

[0009] Optionally, the concentration of the hydroxylamine aqueous solution is 20-40 wt %, and the concentration of the sodium hydroxide aqueous solution is 20-40 wt %.

[0010] Optionally, after grinding the antimony oxide ore until monomers are dissociated, sulfuric acid is added to adjust the pH value of the ore pulp to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the antimony oxide ore flotation collector is added to carry out flotation, and the antimony oxide concentrate product is obtained through the process of one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence.

[0011] Optionally, in the roughing process, the amount of water glass is 500-2000 g / t, the amount of sodium hexametaphosphate is 300-500 g / t, the amount of copper sulfate is 200-800 g / t, the amount of lead nitrate is 100-400 g / t, and the amount of antimony oxide ore flotation collector is 500-2000 g / t;

[0012] In the first scavenging process, the dosage of copper sulfate is 100-400 g / t, the dosage of lead nitrate is 50-200 g / t, and the dosage of antimony oxide ore flotation collector is 300-1000 g / t;

[0013] In the second scavenging process, the dosage of copper sulfate is 50-200g / t, the dosage of lead nitrate is 25-100g / t, and the dosage of antimony oxide ore flotation collector is 100-500g / t;

[0014] In the first concentration process, the amount of water glass used is 300-500g / t;

[0015] In the second concentration process, the amount of water glass used is 100-200g / t;

[0016] The dosage of the water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

[0017] Optionally, the antimony content in the antimony oxide ore is 2.1 wt%.

[0018] The working principle and beneficial effects of this solution are:

[0019] (1) Adding fatty acid hydroxamate to the flotation collector of antimony oxide ore, compared with the conventional hydroxamic acid collector, the long carbon chain fatty acid hydroxamate can take into account both the collection and selectivity, thereby selectively collecting Cu 2+ and Pb 2+ Activated antimony oxide ore. In addition, the synthesis process of fatty acid hydroxamate is simple and the raw material cost is low.

[0020] (2) When compounding the antimony oxide ore flotation collector, the alkaline aqueous solution of fatty acid hydroxamate is fully utilized to saponify oleic acid and tall oil, and sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether are added at the same time, which improves the solubility and dispersibility of the agent in water, produces a good agent synergistic effect, enhances the collection performance of the agent, and can significantly improve the grade and recovery rate of the antimony oxide ore. In addition, the antimony oxide ore flotation collector in this scheme can be directly added to the flotation tank, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the flotation process of antimony oxide ore in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] The invention provides an antimony oxide ore flotation collector. The raw materials of the antimony oxide ore flotation collector include the following components by weight: 3-6 parts of fatty acid hydroxamate, 2-4 parts of oleic acid, 1-2 parts of tall oil, 0.5-1 part of sodium lauryl sulfate and 0.5-1 part of fatty alcohol polyoxyethylene ether.

[0024] The preparation method of fatty acid hydroxamate is as follows: add fatty acid methyl ester to hydroxylamine aqueous solution, control the temperature below 30°C, slowly add sodium hydroxide aqueous solution, and after the addition is completed, heat to 40-50°C and react for 6-9 hours to obtain fatty acid hydroxamate. Moreover, the molar ratio of fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:(1.1-1.2):(2.2-2.3), the concentration of hydroxylamine aqueous solution is 20-40wt%, and the concentration of sodium hydroxide aqueous solution is 20-40wt%.

[0025] The present invention also provides a method for preparing an antimony oxide ore flotation collector, comprising the following steps: weighing fatty acid hydroxamate, oleic acid, tall oil, sodium lauryl sulfate and fatty alcohol polyoxyethylene ether by weight, reacting at 40 to 50° C. for 1 to 3 hours, and obtaining an antimony oxide ore flotation collector.

[0026] The present invention also provides the application of the antimony oxide ore flotation collector in the flotation of antimony oxide ore. When applied, the antimony oxide ore is ground to monomer dissociation, sulfuric acid is added to adjust the pH of the pulp to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the antimony oxide ore flotation collector is added to carry out flotation, and the antimony oxide concentrate product and tailings product are obtained through the process of one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence.

[0027] Moreover, in the roughing process, the dosage of water glass is 500-2000 g / t, the dosage of sodium hexametaphosphate is 300-500 g / t, the dosage of copper sulfate is 200-800 g / t, the dosage of lead nitrate is 100-400 g / t, and the dosage of antimony oxide ore flotation collector is 500-2000 g / t.

[0028] In the first scavenging process, the amount of copper sulfate used is 100-400 g / t, the amount of lead nitrate used is 50-200 g / t, and the amount of antimony oxide ore flotation collector used is 300-1000 g / t; in the second scavenging process, the amount of copper sulfate used is 50-200 g / t, the amount of lead nitrate used is 25-100 g / t, and the amount of antimony oxide ore flotation collector used is 100-500 g / t.

[0029] In the first selection process, the amount of water glass used is 300-500 g / t, and in the second selection process, the amount of water glass used is 100-200 g / t.

[0030] It should be noted that the dosage of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide flotation collector is based on the weight of antimony oxide. Moreover, the antimony oxide selected in the present invention has an antimony content of 2.1wt%, and the antimony-containing minerals are mainly antimony chalcanthite, yellow antimony chalcanthite, antimony ochre, etc., containing a small amount of stibnite, and the gangue minerals are mainly quartz, calcite, rhyme, kaolinite, montmorillonite, etc.

[0031] The following specific examples are given to illustrate the present invention in detail. It should also be understood that the following examples are only used to specifically illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention belong to the scope of protection of the present invention. The specific process parameters and the like in the following examples are also only examples within a suitable range, that is, those skilled in the art can make a selection within a suitable range according to the description herein, and are not limited to the specific values ​​​​exemplified below.

[0032] Example 1

[0033] This embodiment provides an antimony oxide ore flotation collector, and the preparation method of the antimony oxide ore flotation collector comprises the following steps:

[0034] (1) Preparation of fatty acid hydroxamate: A 20 wt% hydroxylamine aqueous solution is prepared with hydroxylamine as a raw material, fatty acid methyl ester is added to the hydroxylamine aqueous solution, and a 40 wt% sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C. After the sodium hydroxide aqueous solution is added dropwise, the temperature is raised to 50° C. and stirred for reaction for 8 hours to obtain fatty acid hydroxamate. The molar ratio of fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:1.2:2.3.

[0035] (2) Preparation of antimony oxide ore flotation collector: 3 parts by weight of fatty acid hydroxamate, 4 parts by weight of oleic acid, 1 part by weight of tall oil, 1 part by weight of sodium dodecyl sulfate and 1 part by weight of fatty alcohol polyoxyethylene ether (AEO-9) were reacted at 50° C. for 2 h to obtain an antimony oxide ore flotation collector.

[0036] This embodiment also provides the application of the above antimony oxide ore flotation collector in the flotation of antimony oxide ore. The process flow of the above antimony oxide ore flotation collector for flotation of antimony oxide ore is basically as follows: Figure 1 As shown, specifically, in the flotation process, the antimony oxide ore is ground to dissociate the mineral monomers, sulfuric acid is added to adjust the pH of the slurry to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the above antimony oxide ore flotation collector is added for flotation. After one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence, the antimony oxide concentrate product and tailings product are obtained.

[0037] Among them, in the roughing process, the amount of water glass is 1000g / t, the amount of sodium hexametaphosphate is 500g / t, the amount of copper sulfate is 800g / t, the amount of lead nitrate is 100g / t, and the amount of antimony oxide flotation collector is 1000g / t. In the first scavenging process, the amount of copper sulfate is 400g / t, the amount of lead nitrate is 50g / t, and the amount of antimony oxide flotation collector is 500g / t. In the second scavenging process, the amount of copper sulfate is 200g / t, the amount of lead nitrate is 25g / t, and the amount of antimony oxide flotation collector is 250g / t. In the first concentrating process, the amount of water glass is 500g / t, and in the second concentrating process, the amount of water glass is 200g / t. The dosage of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

[0038] Example 2

[0039] This embodiment provides an antimony oxide ore flotation collector, and the preparation method of the antimony oxide ore flotation collector comprises the following steps:

[0040] (1) Preparation of fatty acid hydroxamate: A 30 wt% hydroxylamine aqueous solution is prepared with hydroxylamine as a raw material, fatty acid methyl ester is added to the hydroxylamine aqueous solution, and a 30 wt% sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C. After the sodium hydroxide aqueous solution is added dropwise, the temperature is raised to 50° C. and stirred for reaction for 8 hours to obtain fatty acid hydroxamate. The molar ratio of fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:1.2:2.3.

[0041] (2) Preparation of antimony oxide ore flotation collector: 4 parts by weight of fatty acid hydroxamate, 3 parts by weight of oleic acid, 1 part by weight of tall oil, 1 part by weight of sodium dodecyl sulfate and 1 part by weight of fatty alcohol polyoxyethylene ether (AEO-9) were reacted at 50° C. for 2 h to obtain an antimony oxide ore flotation collector.

[0042] This embodiment also provides the application of the above antimony oxide ore flotation collector in the flotation of antimony oxide ore. The process flow of the above antimony oxide ore flotation collector for flotation of antimony oxide ore is basically as follows: Figure 1 As shown, specifically, in the flotation process, the antimony oxide ore is ground to dissociate the mineral monomers, sulfuric acid is added to adjust the pH of the slurry to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the above antimony oxide ore flotation collector is added for flotation. After one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence, the antimony oxide concentrate product and tailings product are obtained.

[0043] Among them, in the roughing process, the amount of water glass is 1000g / t, the amount of sodium hexametaphosphate is 500g / t, the amount of copper sulfate is 800g / t, the amount of lead nitrate is 100g / t, and the amount of antimony oxide flotation collector is 1000g / t. In the first scavenging process, the amount of copper sulfate is 400g / t, the amount of lead nitrate is 50g / t, and the amount of antimony oxide flotation collector is 500g / t. In the second scavenging process, the amount of copper sulfate is 200g / t, the amount of lead nitrate is 25g / t, and the amount of antimony oxide flotation collector is 250g / t. In the first concentrating process, the amount of water glass is 500g / t, and in the second concentrating process, the amount of water glass is 200g / t. The dosage of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

[0044] Example 3

[0045] This embodiment provides an antimony oxide ore flotation collector, and the preparation method of the antimony oxide ore flotation collector comprises the following steps:

[0046] (1) Preparation of fatty acid hydroxamate: A 40 wt% hydroxylamine aqueous solution is prepared with hydroxylamine as a raw material, fatty acid methyl ester is added to the hydroxylamine aqueous solution, and a 20 wt% sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C. After the sodium hydroxide aqueous solution is added dropwise, the temperature is raised to 50° C. and stirred for reaction for 8 hours to obtain fatty acid hydroxamate. The molar ratio of fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:1.1:2.25.

[0047] (2) Preparation of antimony oxide ore flotation collector: 5 parts by weight of fatty acid hydroxamate, 2 parts by weight of oleic acid, 2 parts by weight of tall oil, 0.5 parts by weight of sodium dodecyl sulfate and 0.5 parts by weight of fatty alcohol polyoxyethylene ether (AEO-9) were reacted at 50° C. for 2 h to obtain an antimony oxide ore flotation collector.

[0048] This embodiment also provides the application of the above antimony oxide ore flotation collector in the flotation of antimony oxide ore. The process flow of the above antimony oxide ore flotation collector for flotation of antimony oxide ore is basically as follows: Figure 1 As shown, specifically, in the flotation process, the antimony oxide ore is ground to dissociate the mineral monomers, sulfuric acid is added to adjust the pH of the slurry to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the above antimony oxide ore flotation collector is added for flotation. After one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence, the antimony oxide concentrate product and tailings product are obtained.

[0049] Among them, in the roughing process, the amount of water glass is 1000g / t, the amount of sodium hexametaphosphate is 500g / t, the amount of copper sulfate is 800g / t, the amount of lead nitrate is 100g / t, and the amount of antimony oxide flotation collector is 1000g / t. In the first scavenging process, the amount of copper sulfate is 400g / t, the amount of lead nitrate is 50g / t, and the amount of antimony oxide flotation collector is 500g / t. In the second scavenging process, the amount of copper sulfate is 200g / t, the amount of lead nitrate is 25g / t, and the amount of antimony oxide flotation collector is 250g / t. In the first concentrating process, the amount of water glass is 500g / t, and in the second concentrating process, the amount of water glass is 200g / t. The dosage of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

[0050] Example 4

[0051] This embodiment provides an antimony oxide ore flotation collector, and the preparation method of the antimony oxide ore flotation collector comprises the following steps:

[0052] (1) Preparation of fatty acid hydroxamate: A hydroxylamine aqueous solution with a concentration of 20 wt% is prepared using hydroxylamine as a raw material, fatty acid methyl ester is added to the hydroxylamine aqueous solution, and a 40 wt% sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C. After the sodium hydroxide aqueous solution is added dropwise, the temperature is raised to 50° C. and stirred for reaction for 8 hours to obtain fatty acid hydroxamate. The molar ratio of fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:1.1:2.2.

[0053] (2) Preparation of antimony oxide ore flotation collector: 6 parts by weight of fatty acid hydroxamate, 2 parts by weight of oleic acid, 1 part by weight of tall oil, 0.5 parts by weight of sodium dodecyl sulfate and 0.5 parts by weight of fatty alcohol polyoxyethylene ether (AEO-9) were reacted at 50° C. for 2 h to obtain an antimony oxide ore flotation collector.

[0054] This embodiment also provides the application of the above antimony oxide ore flotation collector in the flotation of antimony oxide ore. The process flow of the above antimony oxide ore flotation collector for flotation of antimony oxide ore is basically as follows: Figure 1 As shown, specifically, in the flotation process, the antimony oxide ore is ground to dissociate the mineral monomers, sulfuric acid is added to adjust the pH of the slurry to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the above antimony oxide ore flotation collector is added for flotation. After one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence, the antimony oxide concentrate product and tailings product are obtained.

[0055] Among them, in the roughing process, the amount of water glass is 1000g / t, the amount of sodium hexametaphosphate is 500g / t, the amount of copper sulfate is 800g / t, the amount of lead nitrate is 100g / t, and the amount of antimony oxide flotation collector is 1000g / t. In the first scavenging process, the amount of copper sulfate is 400g / t, the amount of lead nitrate is 50g / t, and the amount of antimony oxide flotation collector is 500g / t. In the second scavenging process, the amount of copper sulfate is 200g / t, the amount of lead nitrate is 25g / t, and the amount of antimony oxide flotation collector is 250g / t. In the first concentrating process, the amount of water glass is 500g / t, and in the second concentrating process, the amount of water glass is 200g / t. The dosage of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

[0056] Comparative Example 1

[0057] The difference between this comparative example and Example 1 is that oleic acid is used as the flotation collector of antimony oxide ore in this comparative example, and the total dosage of the reagent remains unchanged.

[0058] That is, this comparative example provides a flotation method for antimony oxide ore: after the antimony oxide ore is ground to dissociate the mineral monomers, sulfuric acid is added to adjust the pH value of the ore pulp to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, oleic acid is added for flotation, and the antimony oxide concentrate product and tailings product are obtained through the process of one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence.

[0059] Among them, in the roughing process, the amount of water glass is 1000g / t, the amount of sodium hexametaphosphate is 500g / t, the amount of copper sulfate is 800g / t, the amount of lead nitrate is 100g / t, and the amount of oleic acid is 1000g / t. In the first scavenging process, the amount of copper sulfate is 400g / t, the amount of lead nitrate is 50g / t, and the amount of oleic acid is 500g / t. In the second scavenging process, the amount of copper sulfate is 200g / t, the amount of lead nitrate is 25g / t, and the amount of oleic acid is 250g / t. In the first concentrating process, the amount of water glass is 500g / t, and in the second concentrating process, the amount of water glass is 200g / t. The amount of water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and oleic acid is based on the weight of antimony oxide ore.

[0060] Comparative Example 2

[0061] The difference between this comparative example and comparative example 2 is that in this comparative example, tall oil is used as a flotation collector for antimony oxide ore, and the total reagent dosage remains unchanged.

[0062] Comparative Example 3

[0063] The difference between this comparative example and comparative example 3 is that in this comparative example, oleic acid and tall oil are combined in a weight ratio of 1:1 as flotation collectors for antimony oxide ore, and the total dosage of reagents remains unchanged.

[0064] Comparative Example 4

[0065] The difference between this comparative example and comparative example 4 is that in this comparative example, fatty acid hydroxamate is used as the flotation collector for antimony oxide ore, and the total dosage of the reagent remains unchanged.

[0066] Comparative Example 5

[0067] The difference between this comparative example and comparative example 4 is that the antimony oxide ore flotation collector in this comparative example is obtained by the following method: 6 parts of sodium benzohydroxamate aqueous solution (30wt% effective content), 2 parts of oleic acid, 1 part of tall oil, 0.5 parts of sodium dodecyl sulfate and 0.5 parts of fatty alcohol polyoxyethylene ether (AEO-9) are reacted at 50°C for 2h to obtain an antimony oxide ore flotation collector; the total reagent dosage remains unchanged.

[0068] The results of the antimony concentrate yield, grade and recovery rate of Examples 1-4 and Comparative Examples 1-5 are shown in Table 1.

[0069] Table 1 Antimony oxide ore flotation test results

[0070]

[0071]

[0072] As shown in Table 1, compared with Comparative Example 1, the grade of antimony concentrate in Example 1 is 4.15% higher and the recovery rate is 7.5% higher. Compared with Comparative Example 2, the grade of antimony concentrate in Example 2 is 3.9% higher and the recovery rate is 13.1% higher. Compared with Comparative Example 3, the grade of antimony concentrate in Example 3 is 4.34% higher and the recovery rate is 10.07% higher. Compared with Comparative Example 4, the grade of antimony concentrate in Example 4 is 0.43% higher and the recovery rate is 8.01% higher. Compared with Comparative Example 5, the grade of antimony concentrate in Example 4 is 3.09% higher and the recovery rate is 5.46% higher. This shows that the flotation collector of antimony oxide ore in the present invention can significantly improve the grade and recovery rate of antimony oxide ore, and can be directly added to the flotation tank, which is convenient to use.

[0073] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the present invention. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A flotation collector for antimony oxide ore, characterized in that: The raw materials include the following components by weight: 3-6 parts of fatty acid hydroxamate, 2-4 parts of oleic acid, 1-2 parts of tall oil, 0.5-1 part of sodium lauryl sulfate, and 0.5-1 part of fatty alcohol polyoxyethylene ether.

2. The antimony oxide ore flotation collector according to claim 1, characterized in that: The fatty acid hydroxamate is prepared according to the following method: fatty acid methyl ester is added to a hydroxylamine aqueous solution, and a sodium hydroxide aqueous solution is slowly added dropwise at a temperature below 30° C. After the addition is completed, the temperature is raised to 40-50° C. and the reaction is carried out for 6-9 hours to obtain the fatty acid hydroxamate.

3. The antimony oxide ore flotation collector according to claim 2, characterized in that: The molar ratio of the fatty acid methyl ester, hydroxylamine and sodium hydroxide is 1:(1.1-1.2):(2.2-2.3).

4. The antimony oxide ore flotation collector according to claim 2, characterized in that: The concentration of the hydroxylamine aqueous solution is 20-40 wt %, and the concentration of the sodium hydroxide aqueous solution is 20-40 wt %.

5. The method for preparing the antimony oxide ore flotation collector according to claim 1, characterized in that: The following steps are involved: Fatty acid hydroxamate, oleic acid, tall oil, sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether are weighed by weight, reacted at 40-50° C. for 1-3 hours, and an antimony oxide ore flotation collector is obtained.

6. Use of the antimony oxide ore flotation collector as claimed in claim 1 in the flotation of antimony oxide ore.

7. The use according to claim 6, characterized in that: After grinding the antimony oxide ore until the monomers are dissociated, sulfuric acid is added to adjust the pH value of the pulp to 5-6, water glass and sodium hexametaphosphate are used as inhibitors, copper sulfate and lead nitrate are used as activators, and the antimony oxide ore flotation collector is added to carry out flotation, and the antimony oxide concentrate product is obtained through the process of one roughing, two sweeping and two refining, and the intermediate ore is returned in sequence.

8. The use according to claim 7, characterized in that: In the roughing process, the dosage of water glass is 500-2000g / t, the dosage of sodium hexametaphosphate is 300-500g / t, the dosage of copper sulfate is 200-800g / t, the dosage of lead nitrate is 100-400g / t, and the dosage of antimony oxide ore flotation collector is 500-2000g / t; In the first scavenging process, the dosage of copper sulfate is 100-400 g / t, the dosage of lead nitrate is 50-200 g / t, and the dosage of antimony oxide ore flotation collector is 300-1000 g / t; In the second scavenging process, the dosage of copper sulfate is 50-200g / t, the dosage of lead nitrate is 25-100g / t, and the dosage of antimony oxide ore flotation collector is 100-500g / t; In the first concentration process, the amount of water glass used is 300-500g / t; In the second concentration process, the amount of water glass used is 100-200g / t; The dosage of the water glass, sodium hexametaphosphate, copper sulfate, lead nitrate and antimony oxide ore flotation collector is based on the weight of the antimony oxide ore.

9. The use according to claim 6, characterized in that: The antimony content in the antimony oxide ore is 2.1 wt %.

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