Comprehensive treatment device for tantalum-niobium tailings and excellent molten slag

Abstract

The utility model belongs to the technical field of tailing treatment devices, and discloses a tantalum-niobium tailing and optimal molten slag comprehensive treatment device which comprises a fixing frame, a flotation mechanism, a rotary roasting mechanism and a magnetic separation mechanism are fixedly installed on the upper surface of the fixing frame, and the feeding end of the rotary roasting mechanism is connected with the bottom of a transfer bin. The flotation mechanism is arranged on the left side of the rotary roasting mechanism, the magnetic separation mechanism is arranged on the left side of the rotary roasting mechanism, and the discharging end of the rotary roasting mechanism is arranged right above one side of the rotary roasting mechanism. Minerals obtained through flotation enter the rotary roasting mechanism through a transfer bin, minerals generated through roasting enter the magnetic separation mechanism, magnetite in the roasted minerals is separated out through a low-intensity magnetic separation method, so that niobium-containing minerals are enriched in magnetic separation tailings, and iron ore and niobium-containing minerals in tantalum-niobium tailings and excellent molten slag are recycled.

Description

Technical Field

[0001] This utility model belongs to the technical field of tailings treatment devices, specifically a comprehensive treatment device for tantalum-niobium tailings and high-quality soluble residues. Background Technology

[0002] The rare metals tantalum and niobium belong to Group VB in the periodic table. Tantalum has an atomic number of 73, and niobium has an atomic number of 41. Tantalum and niobium possess a series of excellent properties, including high melting points, low vapor pressures, good cold working properties, high chemical stability, strong resistance to liquid metals and acid corrosion, and high dielectric constants of their surface oxide films. They are widely used in the electronics, steel, machinery, chemical, aerospace, computer, and superconducting technologies, and even in the medical field. Tantalum is mainly used in the electronics industry, hard alloys, and various high-temperature alloys, while niobium is mainly used in the steel industry. The smelting process of tantalum and niobium consists of two main parts: hydrometallurgy and pyrometallurgy. Hydrometallurgy generally uses acid decomposition of tantalum and niobium concentrate and organic extraction to separate tantalum and niobium from other impurities, producing products such as tantalum and niobium oxides and potassium fluorotantalate. Pyrometallurgy is the process of reducing tantalum and niobium oxides and potassium fluorotantalate to produce metal powders, ingots, rods, bars, wires, tubes, and sheets. These production processes generate three types of waste: waste gas, wastewater, and waste residue. This makes tantalum and niobium smelting one of the most polluting industries. The high-efficiency slag is an alkali cake after rare earth hydroxide precipitate is washed and filtered with water. The rare earth is preferentially dissolved with hydrochloric acid, and the filter residue after filtering out the high-efficiency solution still contains undissolved concentrate and impurities such as thorium and iron.

[0003] Existing tantalum and niobium ores contain radioactive elements such as uranium and thorium. The amount of residue generated during the production process generally accounts for 30%-40% of the input ore. For tantalum and niobium tailings, permanent radioactive tailings storage facilities are generally built, which results in the waste of tailings covers. In order to solve the above problems, a comprehensive treatment device for tantalum and niobium tailings and high-solution slag is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a comprehensive treatment device for tantalum-niobium tailings and high-efficiency slag in order to solve the above problems, including:

[0005] A fixed frame is provided, on the upper surface of which a flotation mechanism, a rotary roasting mechanism, and a magnetic separation mechanism are fixedly installed. A transfer chamber is fixedly installed on one side of the flotation mechanism. The rotary roasting mechanism is located directly below the transfer chamber. The feed end of the rotary roasting mechanism is connected to the bottom of the transfer chamber. The magnetic separation mechanism is located on the left side of the rotary roasting mechanism. The discharge end of the rotary roasting mechanism is located directly above one side of the rotary roasting mechanism.

[0006] The above technical solution involves placing tantalum-niobium tailings and high-efficiency slag into a flotation unit. The flotation unit separates iron and niobium minerals from the tailings. The flotated minerals are then transferred to a rotary roasting unit via a transfer bin. A carbonaceous reducing agent is added to the rotary roasting unit to convert hematite into magnetite. The roasted minerals are then transferred to a magnetic separation unit, where weak magnetic separation is used to separate the magnetite from the roasted minerals. This process enriches niobium-containing minerals in the magnetic tailings, thereby recovering the iron ore and niobium-containing minerals from the tantalum-niobium tailings and high-efficiency slag.

[0007] In a preferred embodiment, a fixed base is fixedly installed on one side of the upper end of the flotation mechanism, a rotating shaft is rotatably connected inside the fixed base, a stirring blade is fixedly installed at the bottom of the rotating shaft, a first motor is fixedly installed on one side of the fixed base, a transmission belt is provided between the output shaft of the first motor and the upper end of the rotating shaft, a scraper is rotatably connected to the other side of the upper end of the flotation mechanism, a transmission disk is fixedly installed on one side of the scraper, a second motor is fixedly installed on one side of the flotation mechanism, a transmission belt is provided between the second motor and the transmission disk, and an air supply port is fixedly installed on the front side of the flotation mechanism.

[0008] In a preferred embodiment, the rotary roasting mechanism further includes two connecting seats, with a rotary cylinder rotatably connected between the two connecting seats. A toothed disc is provided on the outer wall of the rotary cylinder. A third motor is fixedly installed on one side of the upper surface of the fixed frame. A gear is fixedly installed on the outer wall of the output shaft of the third motor, and the gear meshes with the toothed disc.

[0009] In a preferred embodiment, the magnetic separation mechanism further includes a belt conveyor, a connecting frame fixedly installed on one side of the belt conveyor, and a magnetic plate fixedly installed on one side of the connecting frame.

[0010] The above technical solution involves using a belt conveyor to transport roasted minerals. When the roasted minerals pass directly below a magnetic plate, the magnetic plate adsorbs the iron ore in the roasted minerals.

[0011] In a preferred embodiment, the interior of the transfer chamber has a sloping structure.

[0012] In a preferred embodiment, the flotation mechanism, the rotary roasting mechanism, and the magnetic separation mechanism are all controlled by a PLC.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are: this utility model proposes a comprehensive treatment device for tantalum-niobium tailings and high-quality soluble residue.

[0014] Tantalum-niobium tailings and superior slag are placed inside the flotation unit. The flotation unit separates iron and niobium minerals from the tailings. The flotated minerals are then transferred to a rotary roasting unit via a transfer bin. A carbonaceous reducing agent is added to the rotary roasting unit to convert hematite into magnetite. The roasted minerals are then transferred to a magnetic separation unit, where weak magnetic separation is used to separate the magnetite from the roasted minerals. This process enriches the niobium-containing minerals in the magnetic tailings, thereby recovering the iron ore and niobium-containing minerals from the tantalum-niobium tailings and superior slag. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the flotation mechanism in this utility model;

[0017] Figure 3 This utility model Figure 1 A magnified view of A in the middle.

[0018] The markings in the diagram are: 1-fixed frame; 2-flotation mechanism; 21-fixed seat; 22-rotating shaft; 23-stirring blade; 24-first motor; 25-scraper; 26-transmission disc; 27-second motor; 28-air supply port; 29-transfer chamber; 3-rotary roasting mechanism; 31-connecting seat; 32-rotating drum; 33-toothed disc; 34-third motor; 4-magnetic separation mechanism; 41-belt conveyor; 42-connecting frame; 43-magnetic plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] The following will combine Figure 1-3 A detailed description is provided of a comprehensive treatment device for tantalum-niobium tailings and high-quality soluble residue according to an embodiment of this utility model. Example

[0021] A comprehensive treatment device for tantalum-niobium tailings and highly soluble slag includes:

[0022] A fixed frame 1 has a flotation mechanism 2, a rotary roasting mechanism 3, and a magnetic separation mechanism 4 fixedly installed on its upper surface. A transfer chamber 29 is fixedly installed on one side of the flotation mechanism 2. The interior of the transfer chamber 29 has an inclined structure. A fixed seat 21 is fixedly installed on one side of the upper end of the flotation mechanism 2. A rotating shaft 22 is rotatably connected inside the fixed seat 21. A stirring blade 23 is fixedly installed at the bottom of the rotating shaft 22. A first motor 24 is fixedly installed on one side of the fixed seat 21. A transmission belt is provided between the output shaft of the first motor 24 and the upper end of the rotating shaft 22. A scraper 25 is rotatably connected to the other side of the upper end of the flotation mechanism 2. A transmission disk 26 is fixedly installed on one side of the scraper 25. A second motor 27 is fixedly installed on one side of the flotation mechanism 2. A transmission belt is provided between the second motor 27 and the transmission disk 26. An air supply port 28 is fixedly installed on the front side of the flotation mechanism 2. Tantalum and niobium tailings and soluble residues are put into the flotation mechanism 2. The iron and niobium minerals in the tailings are selected by the flotation mechanism 2.

[0023] The rotary roasting mechanism 3 is located directly below the transfer chamber 29. The feed end of the rotary roasting mechanism 3 is connected to the bottom of the transfer chamber 29. The rotary roasting mechanism 3 also includes a connecting seat 31. There are two connecting seats 31. The two connecting seats 31 are rotatably connected to the rotary drum 32. The outer wall of the rotary drum 32 is provided with a toothed disk 33. A third motor 34 is fixedly installed on one side of the upper surface of the fixed frame 1. A gear is fixedly installed on the outer wall of the output shaft of the third motor 34, and the gear meshes with the toothed disk 33. The minerals floated out enter the rotary roasting mechanism 3 through the transfer chamber 29. A carbonaceous reducing agent is added inside the rotary roasting mechanism 3 to transform the hematite into magnetite.

[0024] The magnetic separation mechanism 4 is located to the left of the rotary roasting mechanism 3. The flotation mechanism 2, the rotary roasting mechanism 3, and the magnetic separation mechanism 4 are all controlled by a PLC. The discharge end of the rotary roasting mechanism 3 is located directly above one side of the magnetic separation mechanism 4. The magnetic separation mechanism 4 also includes a belt conveyor 41. A connecting frame 42 is fixedly installed on one side of the belt conveyor 41, and a magnetic plate 43 is fixedly installed on one side of the connecting frame 42. The roasting minerals are transported by the belt conveyor 41. When the roasting minerals pass directly below the magnetic plate 43, the iron ore in the roasting minerals is adsorbed by the magnetic plate 43. The minerals produced by roasting enter the interior of the magnetic separation mechanism 4. The magnetite in the roasting minerals is separated by a weak magnetic separation method, thereby enriching the niobium-containing minerals in the magnetic separation tailings, thus recovering the iron ore and niobium-containing minerals in the tantalum-niobium tailings and the high-efficiency slag.

[0025] Working principle:

[0026] Tantalum-niobium tailings and superior slag are placed inside flotation unit 2. The iron and niobium minerals in the tailings are separated by flotation unit 2. The minerals are transferred to rotary roasting unit 3 through transfer bin 29. Carbonaceous reducing agent is added inside rotary roasting unit 3 to convert hematite into magnetite. The roasted minerals enter magnetic separation unit 4. The magnetite in the roasted minerals is separated by weak magnetic separation, thereby enriching the niobium-containing minerals in the magnetic tailings. Thus, the iron ore and niobium-containing minerals in the tantalum-niobium tailings and superior slag are recovered.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for comprehensive treatment of tantalum-niobium tailings and fluxed slag, characterized in that it comprises: Include: The upper surface of the fixed frame is fixedly installed with a flotation mechanism, a rotary roasting mechanism and a magnetic separation mechanism, one side of the flotation mechanism is fixedly installed with a transfer bin, the rotary roasting mechanism is located directly below the transfer bin, the feed end of the rotary roasting mechanism is connected with the bottom of the transfer bin, the magnetic separation mechanism is located on the left side of the rotary roasting mechanism, and the discharge end of the rotary roasting mechanism is located directly above the side of the rotary roasting mechanism.

2. The device for comprehensive treatment of tantalum-niobium tailings and superior-soluble slag according to claim 1, characterized in that: The upper end of the flotation mechanism is fixedly installed with a fixed seat on one side, the inside of the fixed seat is rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly installed with a stirring blade, one side of the fixed seat is fixedly installed with a first motor, a transmission belt is arranged between the output shaft of the first motor and the upper end of the rotating shaft, the upper end of the flotation mechanism is rotatably connected with a scraper on the other side, one side of the scraper is fixedly installed with a transmission disc, one side of the flotation mechanism is fixedly installed with a second motor, a transmission belt is arranged between the second motor and the transmission disc, and the front side of the flotation mechanism is fixedly installed with a gas supply port.

3. The device for comprehensive treatment of tantalum-niobium tailings and superior-soluble slag according to claim 1, characterized in that: The rotary roasting mechanism further comprises a connecting seat, the number of the connecting seat is two, a rotary cylinder is rotatably connected between the two connecting seats, the outer wall of the rotary cylinder is provided with a toothed disc, one side of the upper surface of the fixed frame is fixedly installed with a third motor, the output shaft of the third motor is fixedly installed with a gear on the outer wall, and the gear is engaged with the toothed disc.

4. The device for comprehensive treatment of tantalum-niobium tailings and superior-soluble slag according to claim 1, characterized in that: The magnetic separation mechanism further comprises a belt conveyor, one side of the belt conveyor is fixedly installed with a connecting frame, and one side of the connecting frame is fixedly installed with a magnetic plate.

5. The device for comprehensive treatment of tantalum-niobium tailings and flux residues according to claim 1, characterized in that it comprises: The inside of the transfer bin is a slope structure.

6. The device for comprehensive treatment of tantalum-niobium tailings and flux residues according to claim 1, characterized in that it comprises: The flotation mechanism, the rotary roasting mechanism and the magnetic separation mechanism are all controlled by PLC.

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