Novel cation collecting agent, preparation method and use method

Abstract

The invention provides a novel cation collecting agent, a preparation method and a using method, and relates to the field of mineral flotation. The structural general formula of the novel cation collecting agent is # imgabs0 #, and R comprises any one of a substituted or non-substituted C5-C12 alkyl group, a substituted or non-substituted C5-C12 unsaturated alkyl group and a substituted or non-substituted C5-C12 cycloalkyl group. According to the novel cation collecting agent, magnetite, quartz and silicate can be separated more efficiently, meanwhile, the foam viscosity in the flotation process is reduced, and the cation collecting agent has important significance in improving the magnetite beneficiation efficiency, reducing the production cost and promoting sustainable development of the steel industry.

Description

Technical Field

[0001] This application relates to the field of mineral flotation, and particularly to a novel cationic collector, its preparation method and usage method. Background Art

[0002] In the iron and steel industry, magnetite, as an important iron ore resource, its efficient utilization plays a key role in the development of the industry. Magnetite often closely coexists with gangue minerals such as quartz and silicate. In the beneficiation process, it is crucial to effectively separate magnetite from these gangue minerals.

[0003] Currently, the flotation method is a common means of separating magnetite from quartz and silicate. During the flotation process, the performance of the collector directly affects the mineral separation effect. Traditional collectors have many problems when dealing with the separation of magnetite from quartz and silicate. On the one hand, the separation efficiency is not ideal enough, making it difficult to achieve high recovery rates of magnetite and the production of high-grade concentrates, resulting in resource waste and increased production costs. On the other hand, existing collectors are prone to generating relatively high foam viscosity during flotation. This not only hinders the effective attachment and separation of bubbles and minerals during flotation, reducing the flotation efficiency, but also increases the difficulty and cost of subsequent foam treatment.

[0004] Although existing cationic collectors can achieve mineral separation to a certain extent, their selectivity and collecting ability still need to be improved when facing complex ore compositions. And some anionic collectors have disadvantages such as a narrow application range and harsh requirements for the pulp environment. Therefore, developing a novel cationic collector that can more efficiently separate magnetite from quartz and silicate while reducing the foam viscosity during flotation is of great significance for improving the beneficiation efficiency of magnetite, reducing production costs, and promoting the sustainable development of the iron and steel industry. Summary of the Invention

[0005] The purpose of this application is to provide a novel cationic collector, its preparation method and usage method to solve the above problems.

[0006] To achieve the above purpose, this application adopts the following technical solutions: A novel cationic collector, its structural general formula is: ; Wherein, R includes any one of substituted or unsubstituted C5-C12 alkyl groups, substituted or unsubstituted C5-C12 unsaturated hydrocarbon groups, and substituted or unsubstituted C5-C12 cycloalkyl groups.

[0007] Optionally, the substituted or unsubstituted C5-C12 alkyl group includes: -CH 2 -, -(CH 2 ) nat least one of them, where n = 3, 4, 5, 6.

[0008] Optionally, the substituted or unsubstituted C5-C12 cycloalkyl group includes at least one of cyclobutane, cyclopentane, and cyclohexane.

[0009] Optionally, the substituted or unsubstituted C5-C12 unsaturated hydrocarbon group includes: -CH=CH-, -CH 2 -CH=CH-, -CH 2 -CH=CH-CH 2 -, -(CH 2 ) 2 -CH=CH-CH 2 - and at least one of them.

[0010] A preparation method of a novel cationic collector, comprising: After mixing raw materials including water, acyl chloride, hydrazine hydrate, and an alkaline compound for reaction, the novel cationic collector is obtained.

[0011] Optionally, the temperature of the reaction is 0°C - 5°C, and the time is 0.5 h - 8 h.

[0012] Optionally, the molar ratio of the acyl chloride, the hydrazine hydrate, and the alkaline compound is (1.05 - 1.25):1:(1.05 - 1.31); the mass ratio of the water and the hydrazine hydrate is 1:(2 - 9).

[0013] Optionally, the mixing includes a first mixing and a second mixing carried out in sequence; The first mixing includes: mixing the water, the hydrazine hydrate, and the alkaline compound to obtain a mixture; The second mixing includes: mixing the mixture and the acyl chloride.

[0014] Optionally, the structural general formula of the acyl chloride is: ; wherein, R includes any one of a substituted or unsubstituted C5-C12 alkyl group, a substituted or unsubstituted C5-C12 unsaturated hydrocarbon group, and a substituted or unsubstituted C5-C12 cycloalkyl group.

[0015] Optionally, the alkaline compound includes at least one of sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate.

[0016] Optionally, after the reaction, the novel cationic collector is obtained through drying and solid-liquid separation.

[0017] A method for using a novel cationic collector, comprising: grinding the magnetite raw ore and mixing it with water to obtain a magnetite raw ore pulp, and mixing the magnetite raw ore pulp with the novel cationic collector and then performing reverse flotation to separate quartz; The magnetite raw ore includes magnetite containing quartz and magnetite containing silicate.

[0018] Compared with the prior art, the beneficial effects of the present application include: The novel cationic collector provided by the present application has an amide beside the amino group, which can increase the water content in the foam during the reverse flotation desilication process of magnetite, reduce the viscosity of the foam, reduce the content of magnetite in quartz and silicate, and improve the recovery rate of magnetite.

[0019] The preparation method of the novel cationic collector provided by the present application is simple in operation, wide in source of preparation raw materials, stable in product quality, and suitable for large-scale industrial production.

[0020] The application of the novel cationic collector provided by the present application. Using the novel cationic collector provided by the present application can improve the economy of the sorting and enrichment process, reduce the environmental impact during the development and utilization of low-grade resources, enhance the comprehensive utilization rate of resources in minerals, and can be widely applied in the field of mineral flotation. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope of the present application.

[0022] Figure 1 1H NMR spectrum of the novel cationic collector prepared in Example 1; Figure 2 Mass spectrum of the cationic collector prepared in Example 1; Figure 3 1H NMR spectrum of the cationic collector prepared in Example 2; Figure 4 Mass spectrum of the cationic collector prepared in Example 2; Figure 5 1H NMR spectrum of the cationic collector prepared in Example 3; Figure 6 Mass spectrum of the cationic collector prepared in Example 3; Figure 7 1H NMR spectrum of the cationic collector prepared in Example 4; Figure 8 Mass spectrum of the cationic collector prepared in Example 4; Figure 9 1H NMR spectrum of the cationic collector prepared in Example 5; Figure 10 Mass spectrum of the cationic collector prepared in Example 5. Detailed Description of the Invention

[0023] As used herein: "prepared from" is synonymous with "comprising". As used herein, the terms "comprising", "including", "having", "containing" or any other variation thereof are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that comprises the recited elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0024] The connecting phrase "consisting of" excludes any unrecited element, step, or component. If used in a claim, this phrase will render the claim closed, excluding materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the claim body rather than immediately following the subject, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0025] When an equivalent, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values and lower preferred values, this should be understood to specifically disclose all ranges formed by any pairing of any upper range limit or preferred value with any lower range limit or preferred value, whether or not the ranges are separately disclosed. For example, when the range "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5", etc. When a numerical range is described herein, unless otherwise stated, the range is intended to include its end values and all integers and fractions within the range.

[0026] In these examples, unless otherwise specified, the parts and percentages are by mass.

[0027] "Parts by mass" refers to the basic measurement unit representing the mass ratio relationship of multiple components. One part can represent any unit mass, such as 1 g or 2.689 g, etc. If we say that the mass of component A is a parts by mass and the mass of component B is b parts by mass, it means the molar ratio of the mass of component A to that of component B is a:b. Or it means the mass of component A is aK and the mass of component B is bK (K is an arbitrary number representing a multiple factor). It should not be misunderstood that, different from the number of parts by mass, the sum of the parts by mass of all components is not limited to 100 parts.

[0028] "And / or" is used to indicate that either one or both of the described situations may occur. For example, A and / or B includes (A and B) and (A or B).

[0029] To better illustrate the technical solution provided by this application, a general statement of the technical solution is given before the embodiments.

[0030] In a first aspect, this application provides a novel cationic collector, and its structural general formula is: ; Wherein, R includes any one of a substituted or unsubstituted C5-C12 alkyl group, a substituted or unsubstituted C5-C12 unsaturated hydrocarbon group, and a substituted or unsubstituted C5-C12 cycloalkyl group.

[0031] In an optional embodiment, the substituted or unsubstituted C5-C12 alkyl group includes: -CH 2 -, -(CH 2 ) n -, at least one of which, where n = 3, 4, 5, 6. The substituted or unsubstituted C5-C12 alkyl group can be a substituted or unsubstituted pentyl group, a substituted or unsubstituted hexyl group, a substituted or unsubstituted heptyl group, a substituted or unsubstituted octyl group, a substituted or unsubstituted nonyl group, a substituted or unsubstituted decyl group, a substituted or unsubstituted C11 alkyl group, a substituted or unsubstituted C12 alkyl group, or any substituted or unsubstituted alkyl group between C5-C12.

[0032] In an optional embodiment, the substituted or unsubstituted C5-C12 cycloalkyl group includes: at least one of cyclobutane, cyclopentane, and cyclohexane. The substituted or unsubstituted C5-C12 cycloalkyl group can be a substituted or unsubstituted C5 cycloalkyl group, a substituted or unsubstituted C6 cycloalkyl group, a substituted or unsubstituted C7 cycloalkyl group, a substituted or unsubstituted C8 cycloalkyl group, a substituted or unsubstituted C9 cycloalkyl group, a substituted or unsubstituted C10 cycloalkyl group, a substituted or unsubstituted C11 cycloalkyl group, a substituted or unsubstituted C12 cycloalkyl group, or any substituted or unsubstituted cycloalkyl group between C5-C12.

[0033] In an alternative embodiment, the substituted or unsubstituted C5-C12 unsaturated hydrocarbon group includes: -CH=CH-, -CH 2 -CH=CH-, -CH 2 -CH=CH-CH 2 -, -(CH 2 ) 2 -CH=CH-CH 2 - and at least one of them. The substituted or unsubstituted C5-C12 unsaturated hydrocarbon group may be a substituted or unsubstituted C5 unsaturated hydrocarbon group, a substituted or unsubstituted C6 unsaturated hydrocarbon group, a substituted or unsubstituted C7 unsaturated hydrocarbon group, a substituted or unsubstituted C8 unsaturated hydrocarbon group, a substituted or unsubstituted C9 unsaturated hydrocarbon group, a substituted or unsubstituted C10 unsaturated hydrocarbon group, a substituted or unsubstituted C11 unsaturated hydrocarbon group, a substituted or unsubstituted C12 unsaturated hydrocarbon group, or any substituted or unsubstituted unsaturated hydrocarbon group between C5 and C12.

[0034] In a second aspect, the present application provides a preparation method of a novel cationic collector, including:

[0035] After mixing raw materials including water, acyl chloride, hydrazine hydrate and a basic compound for reaction, the novel cationic collector is obtained.

[0036] In an alternative embodiment, the temperature of the reaction is 0°C - 5°C, and the time is 0.5 h - 8 h.

[0037] In an alternative embodiment, the molar ratio of the acyl chloride, the hydrazine hydrate, and the basic compound is (1.05 - 1.25):1:(1.05 - 1.31); the mass ratio of the water and the hydrazine hydrate is 1:(2 - 9).

[0038] Optionally, the molar ratio of the basic compound to the hydrazine hydrate may be 1.05:1, 1.10:1, 1.15:1, 1.20:1, 1.25:1, 1.30:1, 1.31:1, or any value between (1.05 - 1.31):1; the molar ratio of the hydrazine hydrate to the acyl chloride may be 1:1.05, 1:1.10, 1:1.15, 1:1.20, 1:1.25, or any value between 1:(1.05 - 1.25); the mass ratio of the hydrazine hydrate to the water may be 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, or any value between 1:(2 - 9).

[0039] In an alternative embodiment, the mixing includes a first mixing and a second mixing carried out in sequence; The first mixing includes: mixing the water, the hydrazine hydrate, and the basic compound to obtain a mixture; The second mixing includes: mixing the mixture and the acyl chloride.

[0040] In an optional embodiment, the general structural formula of the acyl chloride is: ; wherein, R includes any one of a substituted or unsubstituted C5-C12 alkyl group, a substituted or unsubstituted C5-C12 unsaturated hydrocarbon group, and a substituted or unsubstituted C5-C12 cycloalkyl group.

[0041] In an optional embodiment, the basic compound includes at least one of sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate.

[0042] In an optional embodiment, after the reaction is completed, the novel cationic collector is obtained through drying and solid-liquid separation.

[0043] In a third aspect, the present application also provides a method for using a novel cationic collector, including: grinding magnetite raw ore and mixing it with water to obtain a magnetite raw ore pulp, and mixing the magnetite raw ore pulp with the novel cationic collector and then performing reverse flotation to separate quartz; The magnetite raw ore includes magnetite containing quartz and magnetite containing silicate.

[0044] The following will describe the implementation scheme of the present application in detail with specific examples. However, those skilled in the art will understand that the following examples are only used to illustrate the present application and should not be regarded as limiting the scope of the present application. For those not specified in the examples, they are carried out according to conventional conditions or conditions recommended by the manufacturer. For reagents or instruments not specified by the manufacturer, they are all conventional products that can be obtained through commercial purchase.

[0045] Example 1 In a first aspect, this example provides a novel cationic collector, and the specific preparation steps are as follows: The structural formula is:

[0046] Add 70 g of water to a four-necked flask, then add 10.0 g (0.2 mol) of hydrazine hydrate to the flask, then add 8.4 g of sodium hydroxide, lower the temperature to 0 °C, and then gradually dropwise add 34.8 g of octanoyl chloride for reaction. After the dropping is completed, stir for 4 hours. After the reaction is completed, subject the reaction solution to vacuum drying and filtration to obtain the final product, the novel cationic collector YJ-01.

[0047] In the second aspect, the present embodiment provides a method for using the novel cationic collector: The magnetic iron grade in the original magnetite ore used is 64.63%, the P element content is 0.027%, the S element content is 1.36%, the quartz content is 17.77%, the barite content is 6.56%, the ankerite content is 4.50%, and the mica content is 3.63%.

[0048] After the original magnetite ore is ground, it is mixed with water to obtain a magnetite ore pulp with a concentration of 27%. A novel cationic collector is added for a primary rough selection to obtain the tailings at the bottom of the flotation cell.

[0049] In this embodiment, the structure of the prepared novel cationic collector is determined and verified. The nuclear magnetic resonance hydrogen spectrum is as Figure 1 shown, and the mass spectrum is as Figure 2 shown.

[0050] Example 2 In the first aspect, the present embodiment provides a novel cationic collector, and the specific preparation steps are as follows: The structural formula is:

[0051] 120 g of water is added to a four-necked flask, then 10.0 g (0.2 mol) of hydrazine hydrate is added to the flask, and then 13.8 g of potassium hydroxide is added. The temperature is lowered to 5 °C, and then 65.8 g of palmitoyl chloride is gradually added dropwise for reaction. After the addition is completed, it is stirred for 8 hours. After the reaction is completed, the reaction solution is vacuum dried and filtered to obtain the final product, the novel cationic collector YJ-02.

[0052] In the second aspect, the present embodiment provides a method for using the novel cationic collector: The magnetic iron grade in the original magnetite ore used is 64.63%, the P element content is 0.027%, the S element content is 1.36%, the quartz content is 17.77%, the barite content is 6.56%, the ankerite content is 4.50%, and the mica content is 3.63%.

[0053] After the original magnetite ore is ground, it is mixed with water to obtain a magnetite ore pulp with a concentration of 27%. A novel cationic collector is added for a primary rough selection to obtain the tailings at the bottom of the flotation cell.

[0054] In this embodiment, the structure of the prepared novel cationic collector is determined and verified. The nuclear magnetic resonance hydrogen spectrum is as Figure 3 shown, and the mass spectrum is as Figure 4 shown.

[0055] Example 3 In the first aspect, the present embodiment provides a novel cationic collector, and the specific preparation steps are as follows: The structural formula is:

[0056] Add 1300 g of water into a four-necked flask, then add 10.0 g (0.2 mol) of hydrazine hydrate into the flask, then add 9.5 g of sodium hydroxide, cool the temperature to 0 °C, and then gradually add 33.7 g of benzoyl chloride dropwise for reaction. After the addition is completed, stir for 0.8 hours. After the reaction is completed, subject the reaction solution to vacuum drying and filtration to obtain the final product, the novel cationic collector YJ-03.

[0057] In the second aspect, this embodiment provides a method for using the novel cationic collector: The magnetic iron grade in the original magnetite ore used is 64.63%, the content of P element is 0.027%, the content of S element is 1.36%, the quartz content is 17.77%, the barite content is 6.56%, the ankerite content is 4.50%, and the mica content is 3.63%.

[0058] After the original magnetite ore is ground, it is mixed with water to obtain a magnetite ore pulp with a concentration of 27%. Add the novel cationic collector for a single rough selection to obtain the tailings at the bottom of the flotation cell.

[0059] This embodiment conducts structure determination and verification on the prepared novel cationic collector. The nuclear magnetic resonance hydrogen spectrum is as Figure 5 shown, and the mass spectrum is as Figure 6 shown.

[0060] Example 4 In the first aspect, this embodiment provides a novel cationic collector, and the specific preparation steps are as follows: The structural formula is:

[0061] Add 100 g of water into a four-necked flask, then add 10.0 g (0.2 mol) of hydrazine hydrate into the flask, then add 11.2 g of sodium hydroxide, cool the temperature to 3 °C, and then gradually add 28.1 g of valeryl chloride dropwise for reaction. After the addition is completed, stir for 2 hours. After the reaction is completed, subject the reaction solution to vacuum drying and filtration to obtain the final product, the novel cationic collector YJ-04.

[0062] In the second aspect, this embodiment provides a method for using the novel cationic collector: The magnetic iron grade in the original magnetite ore used is 64.63%, the content of P element is 0.027%, the content of S element is 1.36%, the quartz content is 17.77%, the barite content is 6.56%, the ankerite content is 4.50%, and the mica content is 3.63%.

[0063] After the magnetite raw ore is ground and mixed with water, a magnetite raw ore pulp with a concentration of 27% is obtained. A new cationic collector is added for a single rough selection to obtain the tailings at the bottom of the flotation cell.

[0064] In this example, the structure of the prepared new cationic collector was determined and verified. The nuclear magnetic resonance hydrogen spectrum is as Figure 7 shown, and the mass spectrum is as Figure 8 shown.

[0065] Example 5 First, this example provides a new cationic collector, and the specific preparation steps are as follows: The structural formula is:

[0066] Add 110 g of water to a four-necked flask, then add 10.0 g (0.2 mol) of hydrazine hydrate to the flask, then add 9.5 g of sodium hydroxide, lower the temperature to 0 °C, and then gradually add 37.2 g of 3-methylbenzoyl chloride for reaction. After the addition is complete, stir for 3 hours. After the reaction is completed, the reaction solution is vacuum dried and filtered to obtain the final product, the new cationic collector YJ-05.

[0067] Second, this example provides the usage method of the new cationic collector: The magnetic iron grade in the magnetite raw ore used is 64.63%, the P element content is 0.027%, the S element content is 1.36%, the quartz content is 17.77%, the barite content is 6.56%, the ankerite content is 4.50%, and the mica content is 3.63%.

[0068] After the magnetite raw ore is ground and mixed with water, a magnetite raw ore pulp with a concentration of 27% is obtained. A new cationic collector is added for a single rough selection to obtain the tailings at the bottom of the flotation cell.

[0069] In this example, the structure of the prepared new cationic collector was determined and verified. The nuclear magnetic resonance hydrogen spectrum is as Figure 9 shown, and the mass spectrum is as Figure 10 shown.

[0070] Comparative Example 1 First, this comparative example provides the application of a cationic collector: The difference from Example 1 is that the cationic collector in this comparative example is dodecylamine, which is purchased commercially (manufactured by Tieling Mineral Processing Reagent Factory, with a content of 97%).

[0071] Second, this comparative example provides the usage method of the new cationic collector: The magnetite ore used has a magnetic iron grade of 64.63%, a P element content of 0.027%, an S element content of 1.36%, a quartz content of 17.77%, a barite content of 6.56%, an ankerite content of 4.50%, and a mica content of 3.63%.

[0072] After grinding the magnetite ore and mixing it with water, a magnetite ore pulp with a concentration of 27% is obtained. A new cationic collector is added for one rough selection to obtain the tailings at the bottom of the flotation cell after flotation.

[0073] Comparative Example 2 First, this comparative example provides an application of a cationic collector: The difference from Example 1 is that the new cationic collector in this comparative example is octadecylamine, which is obtained by commercial purchase (manufacturer: Tieling Mineral Processing Reagent Factory, content: 97%).

[0074] Second, this comparative example provides a method for using the new cationic collector: The magnetite ore used has a magnetic iron grade of 64.63%, a P element content of 0.027%, an S element content of 1.36%, a quartz content of 17.77%, a barite content of 6.56%, an ankerite content of 4.50%, and a mica content of 3.63%.

[0075] After grinding the magnetite ore and mixing it with water, a magnetite ore pulp with a concentration of 27% is obtained. A new cationic collector is added for one rough selection to obtain the tailings at the bottom of the flotation cell after flotation.

[0076] Comparative Example 3 First, this comparative example provides an application of a cationic collector: The difference from Example 1 is that the cationic collector in this comparative example is coconut amine, which is obtained by commercial purchase (manufacturer: Tieling Mineral Processing Reagent Factory, content: 98%).

[0077] Second, this comparative example provides a method for using the new cationic collector: The magnetite ore used has a magnetic iron grade of 64.63%, a P element content of 0.027%, an S element content of 1.36%, a quartz content of 17.77%, a barite content of 6.56%, an ankerite content of 4.50%, and a mica content of 3.63%.

[0078] After grinding the magnetite ore and mixing it with water, a magnetite ore pulp with a concentration of 27% is obtained. A new cationic collector is added for one rough selection to obtain the tailings at the bottom of the flotation cell after flotation.

[0079] After flotation, the test data of the tailings at the bottom of the flotation cell are shown in Table 1: Table 1 Test Data of Tailings at the Bottom of Flotation Cell

[0080] As can be seen from the results in Table 1, compared with the use of dodecylamine, octadecylamine, and coconut oil amine as inhibitors, the novel cationic collector provided in this application has a good selective flotation effect on quartz during the flotation process, improving the separation effect between the target mineral and magnetite. The lead grade obtained by one-stage flotation is as high as about 80.52%, and the Fe recovery rate is as high as 90.63%.

[0081] Thus, it can be seen that the novel cationic collector provided in this application has a good selective flotation effect on quartz, can reduce the viscosity of flotation foam, realize the flotation separation of the target mineral and magnetite, improve the economy of separation and enrichment, reduce the impact on the environment during the development and utilization of low-grade resources, improve the comprehensive utilization rate of resources in minerals, and can be widely applied in the field of mineral flotation.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0083] In addition, those skilled in the art can understand that although some of the embodiments herein include some features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of this application and forms different embodiments. For example, in the claims above, any one of the claimed embodiments can be used in any combination. The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of this application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art.

Claims

1. A novel cationic collector, characterized in that: Its general structural formula is: ； Wherein, R includes any one of a substituted or unsubstituted C5-C12 alkyl group, a substituted or unsubstituted C5-C12 unsaturated hydrocarbon group, and a substituted or unsubstituted C5-C12 cycloalkyl group.

2. The novel cationic collector according to claim 1, characterized in that: At least one of the following conditions is met: a. The substituted or unsubstituted C5-C12 alkyl group includes :-CH2-、-(CH2) n -, at least one of, where n=3, 4, 5, 6; b. The substituted or unsubstituted C5-C12 cycloalkyl group includes at least one of cyclobutane, cyclopentane and cyclohexane; c. The substituted or unsubstituted C5-C12 unsaturated hydrocarbon group includes at least one of: -CH=CH-, -CH2-CH=CH-, -CH2-CH=CH-CH2-, and -(CH2)2-CH=CH-CH2-.

3. A method for preparing the novel cationic collector according to claim 1 or 2, characterized in that: include: The novel cationic collector is obtained by mixing raw materials including water, acyl chloride, hydrazine hydrate and alkaline compounds for reaction.

4. The preparation method according to claim 3, characterized in that: The reaction temperature is 0°C-5°C, and the reaction time is 0.5h-8h.

5. The preparation method according to claim 3, characterized in that: The molar ratio of the acyl chloride, the hydrazine hydrate and the alkaline compound is (1.05-1.25):1:(1.05-1.31); the mass ratio of the water to the hydrazine hydrate is 1:(2-9).

6. The preparation method according to claim 3, characterized in that: The mixing includes a first mixing and a second mixing performed sequentially; The first mixing comprises: mixing the water, the hydrazine hydrate, and the alkaline compound to obtain a mixture; The second mixing includes: mixing the mixture and the acid chloride.

7. The preparation method according to claim 3, characterized in that: The general structural formula of the acyl chloride is: ； Wherein, R includes any one of a substituted or unsubstituted C5-C12 alkyl group, a substituted or unsubstituted C5-C12 unsaturated hydrocarbon group, and a substituted or unsubstituted C5-C12 cycloalkyl group.

8. The preparation method according to claim 3, characterized in that: The alkaline compound includes at least one of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.

9. The preparation method according to any one of claims 3 to 8, characterized in that: After the reaction is completed, the novel cationic collector is obtained through drying and solid-liquid separation.

10. A method for using the novel cationic collector according to claim 1 or 2, characterized in that: include: Grinding the magnetite ore and mixing it with water to obtain magnetite ore slurry, and mixing the magnetite ore slurry with the novel cationic collector to perform reverse flotation to separate quartz; The magnetite ore includes quartz magnetite and silicate-containing magnetite.

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