Copper-lead-zinc-antimony sulfide ore flotation foaming agent and preparation method and application thereof

Abstract

The invention provides a copper-lead-zinc-antimony sulfide ore flotation foaming agent and a preparation method and application thereof, and belongs to the technical field of mineral flotation preparation synthesis. The foaming agent for mineral flotation is obtained by mixing 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and ethylene glycol according to a specific proportion, fully stirring and standing. The mineral flotation foaming agent prepared in the invention has the advantages of good flotation index, high concentrate grade and low unit consumption compared with the domestic common foaming agent pine oil and terpenic oil, and has the advantages of low use cost, wide raw material source and equivalent flotation index compared with the foreign common foaming agent methyl amyl alcohol. The foaming agent provided by the invention is wide in source and low in price, and can be suitable for flotation of sulphide ores of metals such as copper, lead, zinc and antimony with relatively high content of easily-argillized gangue.

Description

Technical Field

[0001] The invention relates to the technical field of mineral flotation agent synthesis, and in particular to a copper-lead-zinc-antimony sulfide ore flotation frother and a preparation method and application thereof. Background Art

[0002] The characteristics of my country's mineral resources are poor, fine and mixed, so the efficient recycling of fine minerals is particularly important. Flotation is the main separation technology, and foam flotation is one of the effective methods for separating fine minerals. As one of the most important flotation agents in the froth flotation process of mineral resources, the frother not only affects the quantity and quality of bubbles in mineral flotation, but also affects the contact between mineral particles. In addition, it can promote the separation of hydrophobic and hydrophilic mineral particles adhering to the bubbles in the foam layer. The quality of its performance directly affects the flotation index.

[0003] For the flotation of metal sulfides such as copper, lead, zinc, and antimony, there are relatively few types of artificially synthesized frothers in China. Pine oil or pine alcohol oil is often used as a frother. Methyl amyl alcohol (MIBC) is currently the most widely used frother abroad. White oil, cresol, and ether alcohol oil are rarely used in industrial production. Pine oil or pine alcohol oil can be applied to the flotation of most non-ferrous metal sulfides in China, but for ores with a high content of easily muddy gangue minerals, it is difficult to obtain qualified concentrates using pine oil or pine alcohol oil. Methyl amyl alcohol (MIBC) is beneficial to improving the flotation concentrate grade of high-mud ores, but because the agent is an imported product, it is expensive and the cost of using the agent is high, which restricts the application of MIBC in China. At present, the domestic market is in urgent need of a flotation frother that is affordable, has good flotation indicators, and can be applied to ores with a high content of easily muddy gangue minerals. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present application provides a copper, lead, zinc and antimony sulfide ore flotation frother and its preparation method and application, aiming to solve the problems that the flotation concentrate grade of existing domestic flotation frothers is poor and the foreign flotation frothers are expensive.

[0005] In a first aspect, the present application provides a flotation frother for copper, lead, zinc and antimony sulfide ores, comprising dodecyl alcohol ester and ethylene glycol, and the volume percentage ratio is 7-8:2-3.

[0006] In the technical solution of the embodiment of the present application, a mineral flotation frother is obtained by blending dodecanol ester and ethylene glycol in a specific ratio. The obtained frother has not only a simple composition ratio, but also good flotation index, high concentrate grade, low raw material cost and wide source.

[0007] In a second aspect, the present application provides a method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores, comprising the following steps:

[0008] S1. Add dodecyl alcohol ester and ethylene glycol to a container and stir to obtain a mixed solution;

[0009] S2. The mixed solution is sealed and allowed to stand to obtain a frother for mineral flotation.

[0010] In the technical solution of the embodiment of the present application, the flotation frother is obtained by blending dodecyl alcohol ester and ethylene glycol and letting the mixture stand. The production process of the frother is very simple.

[0011] In some embodiments, in step S1, the stirring time is more than 10 minutes; in step S2, the standing temperature is room temperature, and the standing time is more than 30 minutes.

[0012] In the technical solution of the embodiment of the present application, the raw materials are fully mixed and reacted by stirring and standing to obtain a flotation frother.

[0013] In a third aspect, an embodiment of the present application provides an application of a frothing agent for flotation of copper, lead, zinc and antimony sulfide ores. The frothing agent is applied to mineral flotation, and is particularly suitable for the flotation of metal sulfide ores such as copper, lead, zinc and antimony with high content of easily muddy gangue minerals, wherein the content of easily muddy gangue minerals in the metal sulfide ores is greater than 20%.

[0014] In the technical solution of the embodiment of the present application, the foaming agent has a wide range of applications.

[0015] In some embodiments, the flotation method of the copper, lead, zinc and antimony sulfide ore flotation frother is: the original ore is made into slurry, a suitable regulator and collector are added thereto, and then a frother is added to the slurry in an amount of 10 to 40 g / t relative to the original ore.

[0016] In this embodiment, the foaming agent obtained has a simple usage method and a small usage amount.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. DETAILED DESCRIPTION

[0018] The following is a detailed description of the embodiments of the technical solution of the present application. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] In order to solve the problem that the existing domestic flotation frothers have poor flotation concentrate grade and foreign flotation frothers are expensive, the present application provides a flotation frother for copper, lead, zinc and antimony sulfide ores and a preparation method and application thereof. Among them, the present application found that after mixing dodecyl alcohol ester and ethylene glycol in a specific ratio, a flotation frother suitable for copper, lead, zinc and antimony sulfide ores with high content of easily muddy gangue can be obtained. The flotation frother has a wide range of applications, high concentrate grade, low unit consumption, and can well meet the domestic demand for high-quality and low-price flotation frothers.

[0022] On the one hand, the present application provides a copper-lead-zinc-antimony sulfide ore flotation frother, comprising dodecyl alcohol ester and ethylene glycol, and the volume percentage ratio is 7-8:2-3.

[0023] In the technical solution of the embodiment of the present application, a mineral flotation frother is obtained by blending dodecanol ester and ethylene glycol in a specific ratio. The obtained frother has not only a simple composition ratio, but also good flotation index, high concentrate grade, low raw material cost and wide source.

[0024] In a second aspect, the present application provides a method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores, comprising the following steps:

[0025] S1. Add dodecyl alcohol ester and ethylene glycol to a container and stir to obtain a mixed solution;

[0026] S2. The mixed solution is sealed and allowed to stand to obtain a frother for mineral flotation.

[0027] In the technical solution of the embodiment of the present application, the flotation frother is obtained by blending dodecyl alcohol ester and ethylene glycol and letting the mixture stand. The production process of the frother is very simple.

[0028] Furthermore, in some embodiments, in step S1, the stirring time is more than 10 minutes; in step S2, the standing temperature is room temperature, and the standing time is more than 30 minutes.

[0029] In the technical solution of the embodiment of the present application, the raw materials are fully mixed and reacted by stirring and standing to obtain a flotation frother.

[0030] In a third aspect, an embodiment of the present application provides an application of a frothing agent for flotation of copper, lead, zinc and antimony sulfide ores. The frothing agent is applied to mineral flotation, and is particularly suitable for the flotation of metal sulfide ores such as copper, lead, zinc and antimony with high content of easily muddy gangue minerals, wherein the content of easily muddy gangue minerals in the metal sulfide ores is greater than 20%.

[0031] In the technical solution of the embodiment of the present application, the obtained flotation frother has a wide range of applications.

[0032] Furthermore, in some embodiments, the flotation method of the copper, lead, zinc and antimony sulfide ore flotation frother is: the original ore is made into slurry, and after the regulator and the collector are added to the slurry during the flotation process, the frother is added in an amount of 10 to 40 g / t relative to the original ore.

[0033] In the technical solution of the embodiment of the present application, the obtained foaming agent has a simple usage method and a small amount.

[0034] Some specific embodiments are listed below. It should be noted that the embodiments described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. If specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used without specifying the manufacturer are all conventional products that can be obtained commercially.

[0035] Example 1

[0036] This embodiment provides a method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores, which specifically comprises the following steps:

[0037] Measure 740L of dodecyl alcohol ester and 260L of ethylene glycol, pour into a glass container, stir for 15 minutes, seal and let stand for 30 minutes, and the finished new foaming agent is obtained. The stock solution is added during mineral processing.

[0038] In order to test the actual application effect of the frother prepared in this example, it was applied to the flotation of copper sulfide ore. The copper grade in the copper sulfide ore was 0.30%, and the total content of gangue mineral talc was 22%. The specific flotation steps were:

[0039] (1) Grind the raw ore to a particle size of -0.074 mm and a content of 80%, add water to adjust the slurry, and the slurry concentration is 30-40%;

[0040] (2) adding 2000 g / t of water glass as a talc inhibitor and 400 g / t of sodium carboxymethyl cellulose to the slurry, stirring for 5 minutes, adding 40 g / t of ethiocarbamate and 15 g / t of the copper, lead, zinc and antimony sulfide ore flotation frother prepared in this example, aerating and scraping the foam to obtain a rougher concentrate;

[0041] (3) The rougher concentrate is subjected to three rounds of concentrating to obtain copper concentrate.

[0042] The use of the copper-lead-zinc-antimony sulfide ore flotation frother prepared in this example in the flotation of copper ore and the flotation results are shown in Table 1.

[0043] Table 1 Example 1 Use of frothers in flotation of copper, lead, zinc and antimony sulfide ore and flotation results

[0044]

[0045] It can be seen from Table 1 that the flotation frother obtained in this embodiment has good flotation index for minerals and high concentrate grade.

[0046] Examples 2 to 3 and Comparative Examples 1 to 3

[0047] Examples 2 to 3 and Comparative Examples 1 to 3 provide a method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores. Compared with Example 1, the difference is that the ratio of dodecyl alcohol ester to ethylene glycol is different. The other steps are substantially the same as those in Example 1 and are not described again herein.

[0048] The raw material ratios of the copper, lead, zinc and antimony sulfide ore flotation frothers prepared in Examples 2 to 3 and Comparative Examples 1 to 3 and the flotation results are shown in Table 2.

[0049] Table 2 Raw material ratios of the flotation frothers for copper, lead, zinc and antimony sulfide ores prepared in Examples 2 to 3 and Comparative Examples 1 to 3 and the results of flotation

[0050]

[0051] It can be seen from the flotation results of Examples 2 to 3 in Table 2 that when the volume ratio of dodecyl alcohol ester to ethylene glycol is within the range of 7 to 8: 2 to 3, the obtained flotation frother has good flotation index for minerals and high concentrate grade. It can be seen from the flotation results of Comparative Examples 1 to 3 that when the volume ratio of dodecyl alcohol ester to ethylene glycol is outside the range of 7 to 8: 2 to 3, the grade and recovery rate of the obtained copper concentrate are reduced, and the content of harmful impurities is also increased, especially when only dodecyl alcohol ester is used, it cannot play a good foaming effect, resulting in a significant reduction in the grade and recovery rate of the copper concentrate and a significant increase in the content of harmful impurities.

[0052] In the present application, dodecanol ester is not a conventional foaming agent and cannot be used alone as a foaming agent for mineral flotation. Dodecanol ester and ethylene glycol need to be mixed in a specific ratio to obtain a qualified copper, lead, zinc and antimony sulfide ore flotation foaming agent. Its mechanism of action is that after ethylene glycol and dodecanol ester are mutually dissolved in a certain ratio, the solubility and dispersibility of a single component in water are changed, resulting in good foaming properties. In addition, the ratio of ethylene glycol to dodecanol ester is different, the solubility and dispersibility of the product in water are different, and the continuous foaming time and foam life are also different.

[0053] Comparative Examples 4-5

[0054] Comparative Examples 4-5 provide an application of a flotation frother for copper, lead, zinc and antimony sulfide ore. Compared with Example 1, the difference is that the flotation frother in Comparative Examples 4-5 is replaced by pine oil and MIBC respectively.

[0055] The use of mineral flotation frothers in copper ore flotation in Comparative Examples 4-5 and the flotation results are shown in Table 3.

[0056] Table 3 The use of mineral flotation frothers in copper ore flotation in comparative examples 4 to 5 and the results of flotation

[0057]

[0058] As can be seen from Table 3, the copper concentrate obtained by flotation in Comparative Example 4 does not meet the standard, and the impurity MgO content exceeds the standard; the flotation index of Comparative Example 5 is equivalent to that of Example 1, and the impurity MgO content meets the standard. However, the amount of frother used in Example 1 is less, and the unit price is only 52% of that in Comparative Example 5, and the cost of using the frother is low.

[0059] In summary, the present application provides a flotation frother for copper, lead, zinc and antimony sulfide ores, and a preparation method and application thereof, which belongs to the technical field of mineral flotation agent synthesis. The flotation frother for mineral flotation is obtained by mixing dodecyl alcohol ester and ethylene glycol in a specific proportion, stirring and standing them sufficiently. Compared with the commonly used domestic frothers pine oil and pine alcohol, the mineral flotation frother prepared by the present application has good flotation index, high concentrate grade and low unit consumption. Compared with the commonly used foreign frother methyl pentanol, the use cost is low, the raw material source is wide and the flotation index is equivalent. The frother provided by the present application has a wide source and a low price, and can be applied to the flotation of metal sulfide ores such as copper, lead, zinc and antimony with a high content of easily muddy gangue.

[0060] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A flotation frother for copper, lead, zinc and antimony sulfide ores, characterized in that: Includes dodecyl alcohol esters and ethylene glycol.

2. The copper, lead, zinc and antimony sulfide ore flotation frother according to claim 1, characterized in that: The volume percentage ratio of the dodecyl alcohol ester to the ethylene glycol is 7-8:2-3.

3. A method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores according to claim 1 or 2, characterized in that: The steps include: S1. Add dodecyl alcohol ester and ethylene glycol to a container and stir to obtain a mixed solution; S2. The mixed solution is sealed and allowed to stand to obtain a frother for mineral flotation.

4. The method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores according to claim 3, characterized in that: In step S1, the stirring time is 10 minutes or more.

5. The method for preparing a flotation frother for copper, lead, zinc and antimony sulfide ores according to claim 3, characterized in that: In step S2, the standing temperature is room temperature, and the standing time is more than 30 minutes.

6. An application of the flotation frother of copper, lead, zinc and antimony sulfide ore according to claim 1 or 2, characterized in that: Used in mineral flotation.

7. The use of the flotation frother of copper, lead, zinc and antimony sulfide ore according to claim 6, characterized in that: The mineral is a metal sulfide ore containing easily argillaceous gangue minerals.

8. The use of the flotation frother of copper, lead, zinc and antimony sulfide ore according to claim 7, characterized in that: The metal in the metal sulfide ore includes at least one of copper, lead, zinc and antimony, and the content of easily argillaceous gangue minerals in the metal sulfide ore is greater than 20%.

9. The use of the flotation frother of copper, lead, zinc and antimony sulfide ore according to claim 6, characterized in that: The method for applying the frother to mineral flotation comprises: preparing raw ore into pulp, adding a regulator and a collector into the pulp, and then adding a predetermined amount of the frother into the pulp.

10. The use of the flotation frother of copper, lead, zinc and antimony sulfide ore according to claim 9, characterized in that: During the flotation process, the amount of the frother used is 10-40 g / t relative to the original ore.

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