High-efficiency reusing system of titanium-containing tailings

Abstract

The utility model discloses a kind of titanium tailing high-efficiency recycling system titanium tailing high-efficiency recycling system, including the separation equipment for separating titanium tailing, separation equipment is sequentially provided with the magnetic separation equipment for selecting titanium tailing, the agglomerating or flocculation slurry tank for tailing slurry, the flotation equipment for making flocculation after titanium iron ore particle high-efficiency attachment and float, primary dewatering equipment and secondary dewatering equipment by conveying pipe, this system can carry out titanium concentrate recovery to tailing, for titanium white acidolysis, effectively improve metal resource utilization, improve the comprehensive recovery rate of titanium resource, the flotation environment of acidity effectively inhibits the floatation of calcium, magnesium, silicon and other gangue minerals and sulfur, phosphorus and other harmful impurities, improve the taste of the floated fine iron ore, impurity content significantly reduces, provides high-quality, pure raw material for subsequent acidolysis production titanium white, is conducive to acidolysis reaction stability, reduce sulfuric acid consumption and improve titanium white product quality.

Description

Technical Field

[0001] This utility model relates to the field of tailings recycling technology, specifically to a high-efficiency reuse system for titanium-containing tailings. Background Technology

[0002] Vanadium-titanium magnetite is a mineral resource of significant industrial value, and the titanium concentrate produced from it is a raw material for the widely used titanium dioxide. Tailings are one of the products of mineral processing, with the portion containing the lowest content of the useful target component. Tailings contain low levels of ilmenite, have fine-grained mineral distribution, and low degree of liberation, making them relatively difficult to process. Recovering titanium concentrate from titanium tailings and using it for titanium dioxide acid leaching is a key technology for improving the comprehensive utilization of resources. Utility Model Content

[0003] The technical problem to be solved by this invention is to overcome the existing defects and provide a highly efficient recycling system for titanium-containing tailings, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency reuse system for titanium-containing tailings, comprising a separation device for separating titanium tailings, and a magnetic separation device for finely separating titanium tailings, a slurry preparation tank for agglomerating or flocculating tailings slurry, a flotation device for efficiently attaching and floating flocculated ilmenite particles, a preliminary dewatering device, and a secondary dewatering device, all arranged sequentially through a conveying pipe after the separation device.

[0005] The mixing tank is equipped with a pH detection module and a chemical dosing module on its exterior.

[0006] As a preferred technical solution of this utility model, the separation device is a high-frequency fine screen or a hydrocyclone.

[0007] As a preferred embodiment of this utility model, the dosing module includes a sulfuric acid dosing module, an inhibitor dosing module, and a compound collector dosing module.

[0008] As a preferred technical solution of this utility model, the composite collector in the composite collector addition module is a compound of sodium oleate and the novel chelating collector TC-20.

[0009] As a preferred embodiment of this utility model, the primary dewatering equipment is a high-efficiency thickener, and the secondary dewatering equipment is either a belt filter press or a vacuum filter.

[0010] As a preferred embodiment of this utility model, the preliminary dehydration equipment and the secondary dehydration equipment are equipped with water treatment equipment.

[0011] As a preferred technical solution of this utility model, the magnetic separation equipment includes two-stage magnetic separation modules. The magnetic field strength of the first-stage magnetic separation module is 1.2-1.5T, which is used for coarse separation of materials. The magnetic field strength of the second-stage magnetic separation module is 0.7-0.8T, which is used for fine separation of materials.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This efficient recycling system for titanium-containing tailings can recover titanium concentrate from tailings for use in titanium dioxide acid lysis, effectively improving the utilization rate of metal resources. Fine classification is achieved through high-frequency fine screening or hydrocyclones, followed by pre-enrichment through a two-stage magnetic separation module. The combination of a non-drive flotation cell reduces the minimum particle size of recoverable titanium resources, meaning that a large amount of titanium resources can be recovered from previously abandoned tailings, improving the overall recovery rate of titanium resources. The acidic flotation environment effectively inhibits the flotation of gangue minerals such as calcium, magnesium, and silicon, as well as harmful impurities such as sulfur and phosphorus, improving the grade of the flotated iron ore concentrate and significantly reducing impurity content. This provides high-quality, pure raw materials for subsequent acid lysis production of titanium dioxide, which is beneficial for stable acid lysis reactions, reduced sulfuric acid consumption, and improved titanium dioxide product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1 Separation equipment, 2 Magnetic separation equipment, 3 Slurry mixing tank, 4 Flotation equipment, 5 Preliminary dewatering equipment, 6 Secondary dewatering equipment, 7 Water treatment equipment, 8 pH detection module, 9 Sulfuric acid addition module, 10 Inhibitor addition module, 11 Compound collector addition module. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1This utility model provides a technical solution: a high-efficiency reuse system for titanium-containing tailings, including a separation device 1 for separating titanium tailings. The separation device 1 is either a high-frequency fine screen or a hydrocyclone. The high-frequency fine screen is beneficial to improving the concentrate grade, while the hydrocyclone can improve the separation efficiency. It can be selected according to actual production needs. After the separation device 1, a magnetic separation device 2 for finely selecting titanium tailings, a slurry conditioning tank 3 for agglomerating or flocculating tailings slurry, a flotation device 4 for efficiently attaching and floating flocculated ilmenite particles, a preliminary dewatering device 5, and a secondary dewatering device 6 are arranged sequentially through a conveying pipe. The slurry conditioning tank 3 is equipped with a pH detection module 8 and a dosing module.

[0017] The magnetic separation equipment 2 includes two-stage magnetic separation modules. The magnetic field strength of the first-stage magnetic separation module is 1.2-1.5T, which is used for roughing the material. The magnetic field strength of the second-stage magnetic separation module is 0.7-0.8T, which is used for fine selection of the material. The two-stage magnetic separation modules can more fully separate the material and efficiently obtain pre-enriched titanium concentrate. The dosing module includes a sulfuric acid addition module 9, an inhibitor addition module 10, and a compound collector addition module 11. The compound collector in the compound collector addition module 11 is a compound of sodium oleate and a new chelating collector TC-20. The chelation effect enhances the collection ability of titanium resources. The primary dewatering equipment 5 is a high-efficiency thickener. The secondary dewatering equipment 6 is a belt filter press or a vacuum filter. The primary dewatering equipment 5 and the secondary dewatering equipment 6 are equipped with water treatment equipment 7.

[0018] In operation, tailings are magnetically separated to obtain pre-enriched ore. The pre-enriched slurry is then fed into a mixing tank 3, where sulfuric acid is added sequentially to control the pH at 2-4, along with inhibitors and a composite collector. These elements work together to create ideal conditions for efficient separation of ilmenite. Under specific stirring intensities, the reagents cause the fine ilmenite particles to selectively agglomerate or flocculate, increasing their apparent particle size. Subsequently, the slurry is pumped into a flotation device 4. The preferred flotation device is a non-drive flotation cell. The essence of a non-drive flotation cell lies in its multi-stage, efficient mineralization process, which ensures sufficient contact and adhesion between the fine ilmenite particles and air bubbles. Relying on the slurry's own pressure and air mixing, a large number of microbubbles are generated, allowing the flocculated ilmenite particles to adhere efficiently and float. The flotation concentrate then enters a high-efficiency thickener for preliminary dewatering. The underflow is then further dewatered by a belt filter press or vacuum filter to reduce moisture content, yielding titanium concentrate. Wastewater generated during the dewatering process, especially tailings dam overflow, is treated by the "neutralization-flocculation-sedimentation" process of water treatment equipment 7. After meeting the reuse standards, all wastewater is returned to the production process, reducing wastewater discharge.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency recycling system for titanium-containing tailings, characterized in that: It includes a separation device (1) for separating titanium tailings, and a magnetic separation device (2) for fine selection of titanium tailings, a slurry preparation tank (3) for agglomerating or flocculating tailings slurry, a flotation device (4) for efficiently attaching and floating flocculated ilmenite particles, a primary dewatering device (5) and a secondary dewatering device (6) after the separation device (1) is installed in sequence through a conveying pipe. The mixing tank (3) is equipped with a pH detection module (8) and a dosing module on the outside.

2. The high-efficiency recycling system for titanium-containing tailings according to claim 1, characterized in that: The separation device (1) is a type of high-frequency fine screen or hydrocyclone.

3. The high-efficiency recycling system for titanium-containing tailings according to claim 1, characterized in that: The magnetic separation device (2) includes two-stage magnetic separation modules. The magnetic field strength of the first-stage magnetic separation module is 1.2-1.5T, which is used for coarse separation of materials. The magnetic field strength of the second-stage magnetic separation module is 0.7-0.8T, which is used for fine separation of materials.

4. The efficient recycling system for titanium-containing tailings according to claim 1, characterized in that: The dosing module includes a sulfuric acid dosing module (9), an inhibitor dosing module (10), and a compound collector dosing module (11).

5. The efficient reuse system for titanium-containing tailings according to claim 4, characterized in that: The composite collector in the composite collector addition module (11) is a mixture of sodium oleate and the novel chelating collector TC-20.

6. The efficient reuse system for titanium-containing tailings according to claim 1, characterized in that: The primary dewatering equipment (5) is a high-efficiency thickener, and the secondary dewatering equipment (6) is either a belt filter press or a vacuum filter.

7. The efficient recycling system for titanium-containing tailings according to claim 1, characterized in that: The primary dewatering equipment (5) and the secondary dewatering equipment (6) are equipped with water treatment equipment (7).

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