Vanadium titano-magnetite titanium concentrate flotation reagent and flotation process

Abstract

The invention belongs to the field of vanadium titano-magnetite flotation, and particularly relates to a vanadium titano-magnetite titanium concentrate flotation reagent and a flotation process, and the vanadium titano-magnetite titanium concentrate flotation reagent is formed by mixing a titanium selection collecting agent B-1, superior titanium and MOH according to the weight ratio of (0.8-1.2): (0.8-1.2): (0.8-1.2). The flotation reagents of the specific combination are selected for synergistic effect, the grade and the recovery rate of the vanadium titano-magnetite titanium concentrate are improved, the effect is better than that of a single reagent and an existing combined reagent, the cost performance is higher, the flotation reagent cost can be reduced, the economic benefit is enhanced, the matched staged dosing flotation technology is matched with the particle size and component characteristics of flotation raw materials, and the flotation effect is better. And the sorting pertinence is high.

Description

Technical Field

[0001] This invention belongs to the field of vanadium-titanium magnetite flotation, and particularly relates to a flotation reagent and flotation process for vanadium-titanium magnetite titanium concentrate. Background Technology

[0002] In flotation, since a single reagent cannot achieve ideal flotation results, the principle of synergistic effect is utilized to combine two or more reagents to achieve better flotation performance and economic benefits. The synergistic effect refers to the fact that when multiple reagents are mixed in a certain proportion, their flotation performance on minerals is better than when any single reagent is used. In recent years, the synergistic use of collectors has become an important trend in the ilmenite flotation industry. Commonly used combinations include fatty acid-neutral oil and chelating collector-nonpolar hydrocarbon oil combinations.

[0003] Currently, there is comprehensive research on collectors for ilmenite. Widely used flotation reagents are mainly fatty acid-based, such as oleic acid and talc oil. In recent years, other ilmenite collectors have been researched and developed, such as hydroxamic acids, organophosphonic acids, and organoarsonic acids. In addition, combined collectors used in the ilmenite flotation industry include F968, R-2, ZY, and H717. Therefore, the combined use of flotation reagents is a major development trend in the mineral flotation industry. However, maximizing the effectiveness of combined flotation reagents remains a challenge for current research.

[0004] Therefore, existing technologies still need improvement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a flotation reagent and flotation process for vanadium-titanium magnetite titanium concentrate, specifically: According to one aspect of the present invention, a flotation reagent for vanadium-titanium magnetite titanium concentrate is provided, wherein the flotation reagent for vanadium-titanium magnetite titanium concentrate is composed of titanium collector B-1, high-quality titanium and MOH in a weight ratio of (0.8~1.2):(0.8~1.2):(0.8~1.2).

[0006] In an embodiment of the present invention, the amount of flotation reagent for vanadium-titanium magnetite titanium concentrate added in the flotation process is 2200~2600g / t.

[0007] In an embodiment of the present invention, the vanadium-titanium magnetite ore has a TFe grade of 10-14% and a TiO2 grade of 6-8%, wherein the contents of Ca, Mg and Al, in terms of oxide content, are 11-13 wt%, 9-11 wt% and 9-11 wt%, respectively.

[0008] In an embodiment of the present invention, the content of materials with a particle size of less than 100 mesh in the vanadium-titanium magnetite ore is not less than 94 wt%.

[0009] In an embodiment of the present invention, the content of material with a particle size of less than 400 mesh in the vanadium-titanium magnetite ore is not less than 29 wt%.

[0010] According to another aspect of the present invention, a flotation process for vanadium-titanium magnetite titanium concentrate using flotation reagents according to any one of the above technical solutions is provided, characterized by comprising the following steps: S1. Take vanadium-titanium magnetite ore, add dilute H2SO4 to it, and stir to adjust the pH value of the slurry. S2. Add butyl xanthate and No. 2 oil to the slurry for the first stage of flotation; S3. After the first stage of flotation is completed, butyl xanthate and No. 2 oil are added again to carry out the second stage of flotation; S4. After the second stage of flotation is completed, dilute H2SO4, vanadium-titanium magnetite titanium concentrate flotation reagent and diesel oil are added again to carry out the third stage of flotation to obtain titanium concentrate and tailings.

[0011] In an embodiment of the present invention, in step S1, the amount of H2SO4 added is 700~800 g / t; in step S4, the amount of H2SO4 added is 1800~2000 g / t.

[0012] In an embodiment of the present invention, in step S4, the amount of diesel fuel added is 190~200 g / t.

[0013] In an embodiment of the present invention, in step S2, the amount of butyl xanthate added is 70-80 g / t, and the amount of No. 2 oil added is 30-50 g / t; in step S3, the amount of butyl xanthate added is 20-30 g / t, and the amount of No. 2 oil added is 15-25 g / t.

[0014] In an embodiment of the present invention, the flotation time for the first stage flotation, the second stage flotation, and the third stage flotation is 3 to 5 minutes.

[0015] This invention utilizes a specific combination of flotation reagents to synergistically improve the grade and recovery rate of vanadium-titanium magnetite titanium concentrate. The effect is superior to that of single reagents and existing combinations of reagents, with a higher cost-performance ratio. It can reduce the cost of flotation reagents and enhance economic benefits. The accompanying staged dosing flotation process is adapted to the particle size and composition characteristics of the feed material, and the separation is highly targeted. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation examples of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A flowchart of a flotation process for vanadium-titanium magnetite titanium concentrate according to an exemplary embodiment of the present invention is shown. Detailed Implementation

[0018] The following detailed description of the embodiments is intended to exemplify the principles of the present invention, but should not be construed as limiting the scope of the invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0019] These embodiments are provided to make this disclosure thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0020] It should be noted that, in the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] It should also be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0022] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0023] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0024] This invention provides a flotation reagent for vanadium-titanium magnetite titanium concentrate, wherein the flotation reagent is composed of titanium collector B-1, high-quality titanium and MOH in a weight ratio of (0.8~1.2):(0.8~1.2):(0.8~1.2).

[0025] Specifically, the weight ratio of titanium collector B-1, titanium dioxide, and MOH is 1:1:1.

[0026] Specifically, titanium collector B-1 was purchased from Hebei Zeguang Mineral Processing Reagent Co., Ltd., titanium collector YouTi was purchased from Hubei Hongqiang Mining Technology Co., Ltd., and titanium collector MOH was purchased from Guanghan Jinxin Technology Co., Ltd.

[0027] Titanium collectors B-1, Uri-Titanium, and MOH all contain oxidized paraffin soap as their main component, and their state is ointment-like (similar to butter, cheese, etc.). This invention utilizes a specific combination of flotation reagents to synergistically improve the grade and recovery rate of vanadium-titanium magnetite titanium concentrate. The effect is superior to that of single reagents and existing combinations of reagents, with a higher cost-performance ratio. It can reduce the cost of flotation reagents and enhance economic benefits. The accompanying staged dosing flotation process is adapted to the particle size and composition characteristics of the feed material, and the separation is highly targeted.

[0028] In one embodiment, the addition amount of flotation reagent for vanadium-titanium magnetite titanium concentrate in the flotation process is 2200~2600 g / t. This addition range is suitable for the flotation requirements of vanadium-titanium magnetite titanium concentrate, and can form a good combination with other reagents in the process (such as dilute H2SO4, butyl xanthate, No. 2 oil and diesel oil), giving full play to the collecting effect of flotation reagents on titanium minerals and ensuring stable titanium concentrate separation effect.

[0029] Specifically, the amount added is 2400g / t.

[0030] Based on the above embodiments, in the vanadium-titanium magnetite ore, the TFe grade is 10~14%, the TiO2 grade is 6~8%, and the contents of Ca, Mg and Al, in terms of oxide content, are 11~13wt%, 9~11wt% and 9~11wt%, respectively.

[0031] The experimental subject selected in this invention is the flotation feedstock in the titanium beneficiation process of a titanium beneficiation plant in the Panxi region. The experimental feedstock was analyzed, and the relevant analysis results are as follows:

[0032] As shown in Table 1, the TFe grade in the raw ore fed into the mill is 12.00%, the TiO2 grade is 7.05%, and the contents of Ca, Mg and Al (calculated as oxide content) are 12.00%, 10.04% and 10.96% respectively, which are relatively high and have a significant impact on the subsequent utilization of titanium concentrate.

[0033] To better formulate the experimental plan, sieve analysis tests were conducted on the main influencing factor of flotation—mineral particle size distribution. The experimental equipment mainly utilized a multi-layer hydraulic sieve from the combined beneficiation and metallurgical laboratory, combined with manual inspection of the sieves. The sieve analysis results are shown in Table 2.

[0034] As shown in Table 2, the particle size distribution of the test raw ore is mainly concentrated below 100 mesh (0.15 mm), and the content of particles below 400 mesh (0.038 mm) accounts for 29.16%, indicating that the particle size of the raw material for flotation is relatively fine.

[0035] In one embodiment, the content of material with a particle size of less than 100 mesh in the vanadium-titanium magnetite ore is not less than 94 wt%.

[0036] Based on the above embodiments, the content of materials with a particle size of less than 400 mesh in the vanadium-titanium magnetite ore shall not be less than 29 wt%.

[0037] like Figure 1 The present invention also provides a flotation process for vanadium-titanium magnetite titanium concentrate using flotation reagents from any of the above technical solutions, comprising the following steps: S1. Take vanadium-titanium magnetite ore, add dilute H2SO4 to it, and stir to adjust the pH value of the slurry. S2. Add butyl xanthate and No. 2 oil to the slurry and carry out the first stage of flotation to obtain sulfur concentrate and the first stage of flotation tailings; S3. After the first stage of flotation is completed, butyl xanthate and No. 2 oil are added again (to the tailings of the first stage flotation) to carry out the second stage of flotation, and titanium concentrate and the tailings of the second stage flotation are obtained. S4. After the second stage of flotation is completed, add dilute H2SO4, vanadium-titanium magnetite titanium concentrate flotation reagent and diesel oil again (to the tailings of the second stage flotation) to carry out the third stage of flotation to obtain titanium concentrate and tailings.

[0038] This flotation process is compatible with the flotation reagents used for vanadium-titanium magnetite titanium concentrate. Through synergistic effects between reagents, it is specifically tailored to the particle size and composition characteristics of the vanadium-titanium magnetite feedstock in the Panxi region, effectively improving titanium concentrate separation, quality, and recovery efficiency—outperforming single-reagent flotation methods. The staged addition of reagents maintains a stable pulp environment during flotation, ensuring the collector's effectiveness. Simultaneously, the selected cost-effective reagent combination controls reagent costs, enhancing economic viability. Furthermore, this process can be extended to other titanium beneficiation plants in the Panxi region, helping to improve the utilization rate of regional vanadium-titanium resources.

[0039] In one embodiment, in step S1, the amount of H2SO4 added is 700~800 g / t; in step S4, the amount of H2SO4 added is 1800~2000 g / t.

[0040] The amount added in step S1 can initially adjust the pulp to a suitable acidic environment, laying the foundation for subsequent reagent action and mineral separation; the amount added in step S4 can further maintain the stability of the pulp pH during the flotation process, ensuring that the flotation reagents can fully exert their collection effect on titanium minerals and avoid affecting the separation efficiency due to pH fluctuations.

[0041] Based on the above embodiments, in step S4, the amount of diesel added is 190~200 g / t, which is suitable for the flotation process requirements of vanadium-titanium magnetite titanium concentrate. It can work synergistically with the combined collectors in the process to enhance the collection ability of titanium minerals, help improve the separation effect of titanium concentrate, and provide support for the effective separation of target minerals and gangue minerals.

[0042] In one embodiment, in step S2, the amount of butyl xanthate added is 70~80 g / t, and the amount of No. 2 oil added is 30~50 g / t; in step S3, the amount of butyl xanthate added is 20~30 g / t, and the amount of No. 2 oil added is 15~25 g / t.

[0043] The phased addition of butyl xanthate and No. 2 oil is adapted to the staged requirements of the flotation process for vanadium-titanium magnetite titanium concentrate. The dosage in step S2 can provide suitable auxiliary collection and foaming effects for the first stage of flotation, helping to initially separate some gangue minerals. The supplementary dosage in step S3 can maintain the stability of collection and foaming capabilities during the second stage of flotation, ensuring the quality and recovery efficiency of titanium concentrate beneficiation, and also making subsequent beneficiation continue to be effective.

[0044] Based on the above embodiments, the flotation time for the first, second, and third stages of flotation is 3-5 minutes, providing sufficient reaction time for each stage of flotation to ensure that the reagents and minerals in the pulp fully interact, thus facilitating the effective separation of the target titanium minerals from the gangue minerals.

[0045] The present invention will be further illustrated below through specific embodiments.

[0046] Example Flotation conditions: 10% dilute H2SO4, 2.5% butyl xanthate, 500g raw ore, 4% flotation reagent, and a reagent ratio of 1:1:1.

[0047] according to Figure 1 The flowchart was used for the experiment, and the results are as follows: Table 3 Flotation test results / %

[0048] As shown in Table 3, the titanium concentrate TiO2 grade of the combination of titanium collectors B-1 and MOH is 39.12%, and the recovery rate is 86.23%, indicating a better synergistic effect than other combinations. The field-selected combination is glutathione:MOH. Therefore, by comparing the market prices of glutathione and B-1, we can determine which combination offers better cost-effectiveness. The comparison results are as follows: Table 4. Results of the Pharmaceutical Market Research

[0049] The market research results for flotation reagents in Table 4 show that, based on a comprehensive comparison, B-1 offers better cost-effectiveness. Therefore, the B-1:MOH reagent combination has greater market and industrial application prospects.

[0050] Comparative example: Table 5 Results of MOH Single-Reagent Flotation Tests / %

[0051] Table 6 Results of flotation tests using single-reagent titanium dioxide (%)

[0052] Table 7B-1 Results of Single-Reagent Flotation Tests / %

[0053] As shown in Table 5-7, the TiO2 grades of titanium concentrate obtained by single reagents MOH, YouTi, and B-1 were 22.31%, 34.47%, and 39.05%, respectively, with TiO2 recoveries of 74.69%, 77.68%, and 68.29%, respectively. Their separation efficiency was significantly lower than that of combined reagents. Therefore, the synergistic effect of combined reagents is due to the action of individual reagents, which is also the mainstream trend in flotation reagent development.

[0054] Since the resource endowments in the Panxi region are not significantly different, this optimized process can be extended to other ore processing plants in the Panxi region, which can greatly improve the utilization rate of vanadium and titanium resources in the Panxi region, and provide technical reference and data support for the recovery of vanadium and titanium resources in China and even the world.

[0055] The mixed flotation reagent formulation described in this application, through the synergistic effect of titanium collector B-1, high-quality titanium, and MOH, enhances the targeting of titanium minerals in vanadium-titanium magnetite, improving the grade and recovery rate of titanium concentrate, and outperforming the use of any single collector. Furthermore, because B-1 offers better cost-effectiveness than high-quality titanium, this mixed formulation ensures flotation performance while controlling reagent costs, thus improving economic viability. This mixed reagent is suitable for the composition and particle size characteristics of vanadium-titanium magnetite feedstock in the Panzhihua-Xichang region, and can be adapted to relevant flotation processes, helping to improve the utilization rate of regional vanadium-titanium resources and providing a reference for reagent selection in the flotation of titanium concentrate from similar vanadium-titanium magnetite ores.

[0056] This invention improves titanium concentrate production by designing a new titanium-selecting reagent to replace the existing flotation reagent; it fully utilizes the existing process and combines reagents to further reduce flotation costs; the use of the new process improves grinding efficiency; and it fully utilizes tailings resources for secondary use, achieving tailings recycling.

[0057] The above are exemplary embodiments disclosed in this invention. The order of the disclosed embodiments is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. However, it should be noted that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the disclosed embodiments of this invention (including the claims) is limited to these examples. Various changes and modifications can be made without departing from the scope defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular.

[0058] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of the different aspects of the invention as described above exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A flotation reagent for vanadium-titanium magnetite titanium concentrate, characterized in that, The flotation reagents for vanadium-titanium magnetite titanium concentrate include titanium collector B-1, titanium collector Youti, and titanium collector MOH in a weight ratio of (0.8~1.2):(0.8~1.2):(0.8~1.2).

2. A flotation process for vanadium-titanium magnetite titanium concentrate using the flotation reagent of claim 1, characterized in that, Includes the following steps: S1. Take vanadium-titanium magnetite ore, add acid solution to it, and stir to adjust the pH value of the slurry; S2. Add butyl xanthate and No. 2 oil to the slurry for the first stage of flotation; S3. After the first stage of flotation is completed, butyl xanthate and No. 2 oil are added again to carry out the second stage of flotation; S4. After the second stage of flotation is completed, acid, the flotation reagent for the vanadium-titanium magnetite titanium concentrate, and diesel oil are added to carry out the third stage of flotation to obtain titanium concentrate and tailings.

3. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 2, characterized in that, The amount of the flotation reagent for vanadium-titanium magnetite titanium concentrate added in the flotation process is 2200~2600g / t.

4. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 2, characterized in that, In the raw vanadium-titanium magnetite ore, the TFe grade is 10-14% and the TiO2 grade is 6-8%. The contents of Ca, Mg and Al, in terms of oxide content, are 11-13 wt%, 9-11 wt% and 9-11 wt%, respectively.

5. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 1, characterized in that, In vanadium-titanium magnetite ore, the content of materials with a particle size of less than 100 mesh is not less than 94%.

6. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 1, characterized in that, In vanadium-titanium magnetite ore, the content of materials with a particle size of less than 400 mesh is not less than 29%.

7. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 6, characterized in that, In step S1, the amount of acid added is 700~800g / t; in step S4, the amount of acid added is 1800~2000g / t.

8. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 6, characterized in that, In step S4, the amount of diesel fuel added is 190~200 g / t.

9. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 6, characterized in that, In step S2, the amount of butyl xanthate added is 70~80 g / t, and the amount of No. 2 oil added is 30~50 g / t; in step S3, the amount of butyl xanthate added is 20~30 g / t, and the amount of No. 2 oil added is 15~25 g / t.

10. The flotation process for vanadium-titanium magnetite titanium concentrate according to claim 6, characterized in that, The flotation time for the first, second, and third stages of flotation is 3 to 5 minutes.

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