Superfine titanium iron ore flotation collector and application thereof

Abstract

The application discloses a super-fine particle grade ilmenite flotation collector and application thereof. The super-fine particle grade ilmenite flotation collector provided by the application comprises the following components in percentage by mass: octadecenoic acid 48-70%, fatty alcohol polyoxyethylene ether carboxylate 14-24%, polypropylene glycol 2-5%, octanoyl hydroxamic acid 5-8%, and fatty alcohol phosphate ester potassium salt 9-15%. The super-fine particle grade ilmenite flotation collector provided by the application has good dispersibility, utilizes the advantages of various chemical groups, and produces a co-adsorption effect between the groups and mineral surface particles. In the use process, the flotation collector can be rapidly dispersed in the ore pulp, and TiO2 grade 46.81%, yield 27.95% and recovery rate 81.16% of titanium concentrate products can be effectively selected from the super-fine particle grade ilmenite raw material, so that the utilization rate of titanium resources is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore dressing, in particular to a super-fine particle grade ilmenite flotation collector and application thereof. BACKGROUND

[0002] The titanium reserves in Panxi region of China ranks first in the world, including Panzhihua, Baima, Hongge and Taihe four mining areas. Since the 1990s, the Panxi ilmenite separation system has gradually improved, forming a relatively mature magnetic and flotation combined process. At present, the ilmenite flotation process has been basically mature, and qualified commercial titanium concentrate products can be obtained. However, the research on super-fine particle grade ilmenite flotation is relatively less. With the depletion, impurity and fine of primary ilmenite resources, the difficulty of mineral flotation is increasing day by day, and the adaptability of existing flotation reagents has appeared problems. The research and development of new flotation reagents for super-fine particle grade ilmenite has become the current main research direction.

[0003] The current research on ultra-fine titanium ore flotation collectors mainly faces the following problems: ① The beneficiation reagent contains harmful substances. At present, most enterprises use micro-fine titanium ore flotation collectors containing heavy metals, arsenic and other toxic and harmful substances. With the poor, fine and complex of primary ilmenite resources, the difficulty of mineral flotation is increasing day by day, and the dosage of flotation collector is increasing. These harmful substances will enter the concentrate and tailings with subsequent flotation, and the harmful elements contained in the wastewater will increase day by day, which has a certain impact on the ecological environment. ② A large amount of refractory fine-grained titanium ore is produced and cannot be effectively recovered. With the finer embedding size of useful minerals and gangue in primary ore, the grinding fineness of the ore must be improved to obtain single ilmenite, and a large amount of ultra-fine titanium ore is produced. This part of ultra-fine titanium ore has the characteristics of small quality, large specific surface, high surface energy, etc. In the flotation process, the probability of collision and adhesion of minerals and bubbles is reduced, fine gangue minerals are easily mixed with concentrate, resulting in poor selectivity of flotation collectors, and the selective separation of micro-fine titanium ore and gangue minerals cannot be realized. The single consumption of reagent increases, and the beneficiation cost is large. Therefore, most enterprises discard the-18 μm particle size minerals into the tailings pond, causing great resource waste. ③ The process of reagent use is complex and the cost is high. At present, due to the characteristics of large hardness, low titanium grade, multi-metal co-occurrence, and complex interweaving of various minerals in the raw ore, it is necessary to use fine grinding, deep selection and other separation methods to obtain qualified concentrate products. The ultra-fine titanium ore produced in the subsequent process contains a large amount of ultra-fine titanium ore, which has strong adsorption to the flotation collector. The flotation time is longer, the flotation foam is sticky, and the selectivity of the flotation collector is poor, which seriously affects the flotation efficiency. Therefore, the whole beneficiation production process is long, the cumulative metal loss of each separation operation is large, the beneficiation efficiency is not high, the beneficiation cost is high, and it is difficult to obtain economic benefits. ④ The recovery rate of ultra-fine titanium ore flotation is low. At present, a series of researches have been carried out on ultra-fine titanium ore in China, and certain achievements have been made. However, there are certain limitations. For the flotation of TiO2 with a grade of more than 17%, the TiO2 recovery rate can reach more than 70%. For the flotation of TiO2 with a grade of less than 17%, the TiO2 recovery rate is basically less than 70%. Part of the useful minerals is discharged into the tailings, causing loss of titanium resources, and it is difficult to effectively and completely recover and utilize ultra-fine titanium ore. ⑤ Poor selectivity for ultra-fine titanium ore. The conventional collector has poor selectivity for the titanium concentrate of this particle size, and the TiO2 grade of the concentrate can only reach 39-43%, which cannot obtain qualified products.

[0004] In order to solve the above problems, scientific researchers have carried out a series of research and practice, and research has found that in practical application, a single collector often cannot achieve good separation effect. Two or more reagents are combined to use the synergistic effect of the reagents, and the separation effect is often better than that of a single reagent, so the combination of reagents for flotation of ilmenite has become the main direction of research, and the commonly used flotation collectors at present are basically combined reagents, such as R-2, MOH-2, MPF, SY-1, Youtian-1, ROB, etc. These reagents have achieved certain results when applied to ultra-fine particle grade ilmenite beneficiation, but these combined reagents contain heavy metal harmful substances, which brings great trouble to the ecological environment.

[0005] The invention patent with application publication number CN113941457A discloses a method for obtaining ultra-fine particle grade titanium concentrate, and the flotation collector used is MOH-2, which can select ultra-fine particle grade ilmenite with TiO2 grade of 18% to 22% and titanium content of 50% to 65% at -18 μm to qualified titanium concentrate with TiO2 grade greater than 48%, and the flotation TiO2 yield is greater than 70%. The process requires high grade of flotation into floating ore, but the flotation titanium recovery rate is not high, causing waste of titanium resources, and the flotation reagent contains harmful substances, which is not friendly to the ecological environment; the invention patent with application publication number CN114832950A discloses a flotation collector for ilmenite minerals, wherein the flotation collector used is a composite collector mixed by styrene phosphonic acid, sodium oleate, water wave, kerosene and water in a certain proportion, which can select the TiO2 grade of 18% to 22% into floating ore to qualified titanium concentrate with TiO2 grade of 48% and TiO2 yield greater than 75%. The collector of the invention can effectively select qualified titanium concentrate, and does not contain harmful substances such as heavy metals and arsenic, but can only be used for normal particle size of flotation into floating ore, and the flotation index for ultra-fine particle grade ilmenite is poor; the invention patent with authorization publication number CN109433406B discloses a method for recovering ultra-fine particle ilmenite in overflow of inclined plate thickener, which contains a kind of ultra-fine particle grade ilmenite flotation composite collector, which is prepared by mixing commercial collector MOH, tal oil and commercial emulsifier OP-10 in a certain proportion, and can select ultra-fine particle grade ilmenite with TiO2 grade of 14% to 20% and titanium content of more than 95% at -38 μm to qualified titanium concentrate with TiO2 grade greater than 47%, and the flotation TiO2 yield is greater than 45%. The process does not require high grade of into floating ore, but the titanium recovery rate in the flotation process is low, and the composition of the reagent contains harmful substances, which is not conducive to environmental protection production.

[0006] Therefore, it is particularly important and urgent to find a safe, environmentally friendly and efficient new type of ultra-fine particle grade ilmenite collector in the current increasingly severe environmental situation and to promote sustainable development.

[0007] Therefore, the present application is proposed. SUMMARY

[0008] The present application aims to provide a super-fine particle grade ilmenite flotation collector and its application to overcome the defects of the prior art.

[0009] The present application solves its technical problems by using the following technical solutions.

[0010] The present application provides a super-fine particle grade ilmenite flotation collector, which comprises the following components in mass percentage: octadecenoic acid 48-70%, fatty alcohol polyoxyethylene ether carboxylate 14-24%, polypropylene glycol 2-5%, octanoyl hydroxamic acid 5-8%, and fatty alcohol phosphate ester potassium salt 9-15%.

[0011] In a second aspect, the present application also provides an application of the above-mentioned flotation collector in the flotation separation of super-fine particle grade ilmenite and gangue minerals.

[0012] The present application has the following beneficial effects:

[0013] The present application provides a super-fine particle grade ilmenite flotation collector and its application. The super-fine particle grade ilmenite flotation collector provided by the present application is a heavy metal element-free collector, which is convenient, safe and efficient in the flotation of super-fine particle grade ilmenite. The present application provides an environmentally friendly and efficient liquid type super-fine particle grade ilmenite composite collector with high grade and high recovery rate of super-fine particle grade ilmenite concentrate. The collector can be quickly dispersed in the slurry, effectively select TiO2 grade 46.81% from the super-fine particle grade ilmenite raw material, and obtain a titanium concentrate product with a yield of 27.95% and a recovery rate of 81.16%, thereby greatly improving the utilization rate of titanium resources. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0015] Figure 1 It is a super-fine particle grade ilmenite flotation process schematic diagram. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely. The specific conditions in the embodiments are not specified, which are carried out according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not specified by the manufacturer, which are conventional products that can be purchased in the market.

[0017] The application provides a super-fine particle grade ilmenite flotation collector and application thereof.

[0018] In a first aspect, the application provides a super-fine particle grade ilmenite flotation collector, which comprises the following components in percentage by mass: octadecenoic acid 48-70%, fatty alcohol polyoxyethylene ether carboxylate 14-24%, polypropylene glycol 2-5%, octanoyl hydroxamic acid 5-8%, and fatty alcohol phosphate potassium salt 9-15%.

[0019] The application provides a super-fine particle grade ilmenite flotation collector, which is a composite collector. After the components are compounded, a synergistic effect is generated: the fatty alcohol polyoxyethylene ether carboxylate and the fatty alcohol phosphate potassium salt promote the rapid dissolution of the octadecenoic acid, the polypropylene glycol promotes the dissolution of the octanoyl hydroxamic acid in water, the polypropylene glycol further enhances the dispersibility of the components, the foaming effect is good in the flotation process, the ore carrying capacity of the collector is increased, and in particular, the selectivity of the octanoyl hydroxamic acid to titanium is enhanced. The fatty alcohol polyoxyethylene ether carboxylate has the advantages of being not sensitive to hard water, having a small dosage, having a strong low-temperature collecting ability, and being stable in the polyoxyethylene ether bond, water-soluble, resistant to electrolytes, easily biodegradable, and having small foam. The fatty alcohol phosphate potassium salt and the octadecenoic acid are compounded, which greatly enhances the hydrophobicity of the super-fine particle ilmenite surface that has been complexed by the octanoyl hydroxamic acid, increases the viscosity and strength of the bubbles, reduces the brittleness of the bubbles, enhances the ore carrying capacity of the collector, and improves the selectivity and collecting ability of the collector, so that the super-fine particle ilmenite is quickly captured by the fine bubbles and floated to the water surface, the consumption of the collector is greatly reduced, and good flotation indexes are obtained.

[0020] In an optional embodiment, the fatty alcohol phosphate potassium salt is C 12 -C 18 The fatty alcohol phosphate potassium salt and the fatty alcohol polyoxyethylene ether carboxylate are C 18 -C 22 The saturated fatty alcohol polyoxyethylene ether carboxylate.

[0021] In an optional embodiment, the molecular weight of the polypropylene glycol is 200-600.

[0022] In an optional embodiment, the super-fine particle grade ilmenite flotation collector is prepared by the following method: octadecenoic acid, fatty alcohol polyoxyethylene ether carboxylate, polypropylene glycol, fatty alcohol phosphate, and octanoyl hydroxamic acid are stirred to be completely mixed and uniform, and the super-fine particle grade ilmenite flotation collector is obtained.

[0023] Preferably, the ultra-fine ilmenite flotation collector is prepared by the following method: mixing and stirring octadecenoic acid and fatty alcohol polyoxyethylene ether carboxylate, and then heating to obtain a first mixture; mixing and stirring polypropylene glycol and octanoyl hydroxamic acid, and then heating to obtain a second mixture; adding the second mixture into the first mixture and stirring to obtain a third mixture; mixing the third mixture with fatty alcohol phosphate potassium salt until completely mixed and uniform, thereby obtaining the ultra-fine ilmenite flotation collector.

[0024] More preferably, the heating temperature of the second mixture and the first mixture is 50-80℃, and the third mixture is mixed with the fatty alcohol phosphate potassium salt for 1-2 hours until completely mixed and uniform. The fatty alcohol polyoxyethylene ether carboxylate in the first mixture can saponify the octadecenoic acid, so that both of them can be dissolved in water. The polypropylene glycol in the second mixture is an organic solvent, which can quickly dissolve the octanoyl hydroxamic acid, and the mixture is easily soluble in water. The purpose of adding the second mixture into the first mixture and heating is to mix them uniformly into a uniform and stable third mixture. Mixing the third mixture with the fatty alcohol phosphate potassium salt can further emulsify the mixed system, and the system remains unchanged without delamination for a long time. If the components in the first mixture and the components in the second mixture are interchanged, the four components are prone to delamination when standing, and a uniform and stable system cannot be formed. Moreover, the water solubility of the system decreases, and the beneficiation effect is poor.

[0025] In a second aspect, the embodiments of the present application also provide an application of the above-mentioned flotation collector in the flotation separation of ultra-fine ilmenite and gangue minerals.

[0026] In an optional embodiment, the method comprises the following steps: taking ultra-fine ilmenite as raw material, stirring the raw material with water to obtain a slurry, and adding the flotation collector into the slurry to recover titanium concentrate by flotation.

[0027] In an optional embodiment, the flotation collector solution is obtained by mixing the flotation collector with water; preferably, the mass concentration of the flotation collector solution is 3-8%.

[0028] In an optional embodiment, the particle size of the ultra-fine ilmenite material mainly includes: -0.018mm and -0.038+0.018mm, and the proportion of -0.038mm particle size TiO2 is greater than 95%, and the proportion of -0.018mm particle size TiO2 is greater than 75%.

[0029] In an optional embodiment, the concentration of the slurry is 50%.

[0030] In an optional embodiment, the flotation process adopts a one-roughing two-scavenging four-cleaning operation process, wherein: the dosage of the collector is 15-25kg / t.

[0031] In the optional embodiment, the flotation of the floatation ore with TiO2 grade of 15%-17% is carried out to obtain the titanium concentrate with TiO2 grade of more than 46.5% and recovery rate of more than 80%.

[0032] As can be seen, the ultra-fine particle grade ilmenite flotation collector provided by the embodiment of the present application has the following advantages in use:

[0033] (1) Green and environmental protection. The ultra-fine particle grade ilmenite flotation collector provided by the embodiment of the present application does not contain heavy metals, arsenic and other toxic and harmful substances, and provides a new type of safe and environmentally friendly ultra-fine particle grade ilmenite flotation collector;

[0034] (2) Effective capture of ultra-fine particle ilmenite. Since the particle size of the floatation ore is very fine, the TiO2 content of the raw ore is more than 95% in the-0.038mm particle size, and the TiO2 content of the raw ore is more than 75% in the-0.018mm particle size, and the TiO2 is mainly concentrated in the fine particle size of-0.018mm, the flotation is difficult, and through the flotation collector provided by the embodiment of the present application, the flotation concentrate can effectively recover more than 80% of the titanium resources while meeting the grade standard, avoiding the waste of titanium resources;

[0035] (3) Convenient and efficient. The flotation collector provided by the embodiment of the present application is in the form of jelly, which only needs to be diluted to 5% solution before use in the flotation tank, which is convenient to use and greatly improves the use efficiency;

[0036] (4) High recovery rate. The flotation collector provided by the embodiment of the present application has high recovery rate and high stability in field use. The TiO2 grade of the collected ilmenite obtained by closed-circuit production can be more than 46.50% with a yield of 27.95% and a TiO2 recovery rate of more than 80% when the floatation ore with TiO2 grade of 15%-17% is used. Other types of collectors cannot efficiently capture ultra-fine particle ilmenite, and the recovery rate is less than 70%. The ultra-fine particle grade ilmenite flotation collector provided by the embodiment of the present application can effectively select the ultra-fine particle ilmenite to obtain qualified titanium concentrate products with high recovery rate and high utilization rate of titanium resources.

[0037] (5) Strong selectivity. The titanium concentrate obtained by the flotation collector provided by the embodiment of the present application has high grade, and the grade of the ilmenite obtained by the closed-circuit test is more than 46.50%. The conventional collector has poor selectivity for the ultra-fine particle ilmenite, and the TiO2 grade of the concentrate can only reach between 39-43%, which cannot obtain qualified products.

[0038] The present application will be further described below with reference to the embodiments.

[0039] Embodiment 1

[0040] An ultra-fine particle grade ilmenite flotation collector is composed of the following raw materials in mass percentage: octadecenoic acid 52%, fatty alcohol polyoxyethylene ether carboxylate 24%, polypropylene glycol 3%, octanoyl hydroxamic acid 8%, and fatty alcohol phosphate potassium salt 13%.

[0041] The preparation method of the ultra-fine particle grade ilmenite flotation collector comprises the following steps:

[0042] (1) Mix 52 kg of octadecenoic acid and 24 kg of fatty alcohol polyoxyethylene ether carboxylate, heat in a water bath to 50℃, and stir until uniform to obtain a first mixture.

[0043] (2) Mix 3 kg of polypropylene glycol and 8 kg of octanoyl hydroxamic acid, heat in a water bath to 50℃, and stir until the octanoyl hydroxamic acid is dissolved to obtain a second mixture.

[0044] (3) Mix the second mixture into the first mixture, mix well to obtain a third mixture, mix the third mixture with 13 kg of fatty alcohol phosphate potassium salt, and then stir for 0.5 hours to obtain the ultra-fine particle grade ilmenite flotation collector.

[0045] The product of the embodiment (hereinafter referred to as LB-T) was subjected to a flotation test in the Hongge ilmenite mine in the Panxi region, and the test process and related data are as follows:

[0046] The particle size composition and metal distribution of the material subjected to flotation in Example 1

[0047] Size fraction (mm) Yield Grade (%) Distribution rate (%) +0.074 1.35 5.22 0.44 -0.074+0.038 8.78 6.01 3.27 -0.038+0.018 23.85 11.79 17.45 -0.018 66.02 19.25 78.84 Total 100 16.12 100

[0048] The particle size of the raw ore varies greatly, mainly concentrated in the -0.018 mm and -0.038+0.018 mm particle sizes, with a yield of 66.02% and 23.85%, respectively; in terms of TiO2 distribution rate, only 3.71% in the +0.038 mm particle size, 96.29% in the -0.038 mm particle size, and 78.84% in the -0.018 mm particle size.

[0049] Under the condition of a raw ore with a TiO2 grade of 16.12%, a flotation slurry concentration of 50%, and a pre-desulfurization-one roughing-two scavenging-four cleaning process, a titanium concentrate with a TiO2 grade of 46.81% and a yield of 27.95% can be obtained, and the flotation operation recovery rate is 81.16%.

[0050] Comparative Example 1

[0051] Similar to the steps of Example 1, the only difference is that the collector does not contain octanoyl hydroxamic acid, and the result is that the titanium concentrate obtained by flotation contains Ti02 grade of 43.81%, yield of 28.36%, and flotation operation recovery rate of 83.66% of the separation index. The reason is that the selectivity of octanoyl hydroxamic acid is good, and without this component, the selectivity of the collector decreases, and the concentrate grade is unqualified.

[0052] Comparative Example 2

[0053] Similar to the steps of Example 1, the only difference is that the collector does not contain octadecenoic acid, and the result is that the titanium concentrate obtained by flotation contains Ti02 grade of 48.42%, yield of 19.36%, and flotation operation recovery rate of 69.51% of the separation index. The reason is that the collecting ability of octadecenoic acid is good, and without this component, the collecting ability of the collector decreases, and the concentrate recovery rate decreases significantly.

[0054] Comparative Example 3

[0055] Similar to the steps of Example 1, the only difference is that the amount of octadecenoic acid in the collector is reduced to 20%, and the result is that the titanium concentrate obtained by flotation contains Ti02 grade of 47.81%, yield of 21.36%, and flotation operation recovery rate of 73.66% of the separation index. The reason is that the collecting ability of octadecenoic acid is good, and reducing this component, the collecting ability of the collector decreases, and the recovery rate decreases significantly.

[0056] Comparative Example 4

[0057] Similar to the steps of Example 1, the only difference is that the amount of fatty alcohol phosphate potassium salt in the collector is reduced to 5%, and the result is that the titanium concentrate obtained by flotation contains Ti02 grade of 46.81%, yield of 26.36%, and flotation operation recovery rate of 79.42% of the separation index. The reason is that fatty alcohol phosphate potassium salt can improve the collecting ability of octadecenoic acid and strengthen the selectivity of octanoyl hydroxamic acid, and reducing this component, the collecting ability and selectivity of the collector decrease slightly, and the recovery rate decreases.

[0058] Comparative Example 5

[0059] Similar to the steps of Example 1, the only difference is that the pulp concentration in the flotation process is reduced from 50% to 25%, and the result is that the titanium concentrate obtained by flotation contains Ti02 grade of 47.36%, yield of 25.13%, and flotation operation recovery rate of 76.22% of the separation index. The reason is that the pulp concentration decreases, the concentration of reagents in unit volume of the pulp system decreases, the collision probability of the collector and the mineral particles decreases, the reaction rate decreases, the mineral recovery rate decreases, and the consumption of flotation reagents increases by 25%, and the flotation cost increases.

[0060] Comparative Example 6

[0061] Similar to the steps of example 1, the only difference is that the concentration of the ore pulp in the flotation process is increased from 50% to 70%, and the result is that the titanium concentrate obtained by flotation contains TiO2 grade of 44.72%, yield of 31.13%, and recovery rate of 86.12% in the flotation operation. The reason is that the concentration of the ore pulp is increased, the concentration of the reagent in the unit volume of the ore pulp system is increased, the collision probability of the collector and the mineral particles is increased, the reaction speed is increased, and the mineral recovery rate is increased. However, the viscosity of the ore pulp is increased, the gangue is seriously entrained, and the concentrate grade is unqualified.

[0062] From the above experimental results, it can be seen that octadecenoic acid, octanoyl hydroxamic acid and fatty alcohol phosphate potassium salt are important components of the collector formula. The flotation index decreases significantly if these components are missing or the amount of these components is changed. The change of the concentration of the flotation ore pulp directly affects the flotation performance of the collector.

[0063] Compared with the prior art, the ultra-fine particle grade ilmenite flotation collector provided by the embodiment of the present application has the following characteristics and advantages:

[0064] (1) Green and environmentally friendly. The use of the environmentally friendly collector for the flotation recovery of the ultra-fine particle grade ilmenite of-0.018 mm is realized. At present, the flotation collector for the ultra-fine particle grade ilmenite is mostly a composite collector, which has good collecting properties for ilmenite through the synergistic effect of multiple reagents on the surface of ilmenite. However, most of the ilmenite collectors currently used in industry contain toxic and harmful substances such as benzyl arsenic acid and lead nitrate, which cause certain pollution risk to the environment. The flotation composite collector provided by the present application does not contain harmful substances such as heavy metal arsenic compared with the traditional collector, which can effectively reduce the pollution to the environment and the harm to the human body in the production process, and can maintain strong collecting performance and green and environmentally friendly effect under strong acid conditions. The collector belongs to a green and environmentally friendly collector. The components of the collector can be naturally degraded, which has little disturbance to the mine environment and is conducive to ecological and environmental construction.

[0065] (2) Recovery of ultra-fine particle grade ilmenite. The particle size of the ore entering the flotation is very fine in the present application, the-0.038 mm particle size of the raw ore accounts for more than 95% of TiO2, and the-0.018 mm particle size of TiO2 accounts for more than 75%. Through the reagent of the present application, more than 80% of the titanium resources can be effectively recovered.

[0066] (3) Convenient and efficient. The ultra-fine particle grade ilmenite flotation collector provided by the present application is a composite collector, which has good synergistic effect. The flotation process is fast and efficient. The mutual interaction between the components makes the collector have good dispersibility, reasonably utilizes the advantages of each chemical group, and produces a co-adsorption effect between each group and the mineral surface. In the use process, the flotation composite collector can be quickly dispersed in the ore pulp. Therefore, the present application has the characteristics of hard water resistance, low temperature resistance, quick ore rising, small dosage, etc.

[0067] (4) High recovery rate. The ultra-fine particle grade ilmenite flotation collector provided by the application is a composite collector, and the application of the collector has a low requirement on the grade of the raw ore, and the flotation TiO2 recovery rate is high. Only the TiO2 grade of the flotation ore is 15% to 17%, and the TiO2 grade of the final titanium concentrate can reach more than 46.5%, and the TiO2 recovery rate is higher than 80%. The recovery rate of the conventional collector for ilmenite is not more than 70%. More titanium resources can be effectively recovered.

[0068] (5) Strong selectivity. The titanium concentrate obtained by the flotation collector provided by the embodiment of the application has a high grade, and the closed-circuit test can obtain an ilmenite grade of more than 46.50%. The conventional collector has poor selectivity for the ultra-fine particle grade ilmenite, and the concentrate TiO2 grade can only reach 39% to 43%, and qualified products cannot be obtained.

[0069] The above is only the preferred embodiment of the application, and is not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A super fine particle size ilmenite flotation collector, characterized in that, The components include the following mass percentages: octadecenoic acid 48-70%, fatty alcohol polyoxyethylene ether carboxylate 14-24%, polypropylene glycol 2-5%, octanoyl hydroxamic acid 5-8%, and fatty alcohol phosphate ester potassium salt 9-15%.

2. The ultrafine-grained ilmenite flotation collector according to claim 1, characterized in that, The fatty alcohol phosphate ester potassium salt is C 12 -C 18 The fatty alcohol phosphate ester potassium salt is C 18 -C 22 The fatty alcohol phosphate ester potassium salt is C 3. The ultrafine-grained ilmenite flotation collector according to claim 1, characterized in that, The molecular weight of the polypropylene glycol is 200-600.

4. A process for the preparation of an ultrafine-grained ilmenite flotation collector according to any one of claims 1 to 3, characterized in that, The octadecenoic acid and the fatty alcohol polyoxyethylene ether carboxylate are stirred and mixed, heated, and stirred until uniform to obtain a first mixture; the polypropylene glycol and the octanoyl hydroxamic acid are stirred and mixed, heated, and stirred until uniform to obtain a second mixture; the second mixture is added to the first mixture, and stirred until uniform to obtain a third mixture; the third mixture is mixed with the fatty alcohol phosphate ester potassium salt, and stirred until completely mixed and uniform. The heating temperature of the second mixture and the first mixture is 50-80 DEG C, and the third mixture is mixed with the fatty alcohol phosphate ester potassium salt, and stirred for 1-2 hours until completely mixed and uniform.

5. Use of the flotation collector according to any one of claims 1-3 in the flotation separation of ultra-fine-grained ilmenite and gangue minerals.

6. Use according to claim 5, characterized in that, The method includes the following steps: using ultra-fine-grained ilmenite as raw material, stirring the raw material with water to obtain a slurry, and adding a flotation collector solution to the slurry to recover ilmenite concentrate.

7. Use according to claim 6, characterized in that, The particle size of the ultra-fine-grained ilmenite raw ore mainly includes -0.018 mm and -0.038+0.018 mm, and the -0.038 mm particle size TiO2 accounts for more than 95%, and the -0.018 mm particle size TiO2 accounts for more than 75%; the concentration of the slurry is 50%.

8. Use according to claim 6, characterized in that, The flotation collector solution is obtained by mixing the flotation collector with water; the mass concentration of the flotation collector solution is 3-8%.

9. Use according to claim 6, characterized in that, The flotation process adopts a one-roughing two-scavenging four-cleaning operation process; the dosage of the collector is 15-25 kg / t.

10. Use according to claim 9, characterized in that, The flotation process adopts a one-roughing two-scavenging four-cleaning operation process; the dosage of the collector is 15-25 kg / t. The flotation process adopts a one-roughing two-scavenging four-cleaning operation process; the dosage of the collector is 15-25 kg / t.

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