An intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore

Abstract

The present invention discloses an intelligent control device for a shaftless spiral continuous feeding of tantalum-niobium alloy ore, comprising a decomposition tank, a slurry mixing tank, a first motor, a second motor, a weight metering device, a third motor, a first pressure stabilizing barrel, and a second pressure stabilizing barrel. A discharge pipe is fixed to the bottom of the decomposition tank; a first stirring shaft is fixed to the output end of the third motor; a plurality of first stirring blades are fixed to the first stirring shaft; a second stirring shaft is connected to the output end of the first motor; the second stirring shaft extends into the slurry mixing tank; and a plurality of second stirring blades are fixed to the second stirring shaft. The beneficial effects of the present invention are that it not only solves the problems of continuous feeding, balanced reaction, and safe production, but also greatly improves mechanical efficiency, reduces manpower, and saves costs. The software system can be simply programmed, and the connecting equipment can be completed by simple mechanical manufacturing, making it easy to manufacture.

Description

Technical Field

[0001] The present invention relates to the technical fields of continuous feeding, balanced reaction and intelligent control of tantalum-niobium alloy mineral materials in tantalum-niobium hydrometallurgy, and in particular to an intelligent control device for continuous feeding of tantalum-niobium alloy ore without a shaft. Background Art

[0002] Tantalum and niobium, key elements in high-tech industries, are increasingly sought after worldwide. The United States, the European Union, and Japan have all designated tantalum and niobium as strategic minerals. Tantalum-niobium ore, a raw material for tantalum-niobium products, is a scarce, non-renewable resource. With increasing mining, its reserves are becoming increasingly scarce, driving its price ever higher. Tantalum-niobium alloy ore, another raw material for tantalum-niobium products, is abundant. However, its impurity composition is complex, containing a high concentration of metals and silicon, such as Nb, Ta, Fe, W, Si, Al, Mg, Ca, Mn, Sn, and Ti. During the acid leaching and decomposition stage of the tantalum-niobium hydrometallurgy process, the rate of hydrogen generation from the tantalum-niobium alloy ore is difficult to control, posing a significant explosion risk. Consequently, many tantalum-niobium hydrometallurgy manufacturers have essentially abandoned the use of tantalum-niobium alloy ore. Currently, the acid leaching and decomposition process in the tantalum-niobium hydrometallurgy process employs small, multiple, and discontinuous additions of ore to avoid the potential for hydrogen generation and explosions caused by excessive ore additions. Therefore, it is urgent to design a device to solve the problems of continuous ore feeding, balanced reaction, and controllable hydrogen production rate during the acid leaching decomposition process of the wet smelting process of tantalum-niobium alloy ore. At the same time, it can greatly improve mechanical efficiency, reduce manpower, save costs, and realize automated intelligent control. Summary of the Invention

[0003] The purpose of the present invention is to provide a shaftless spiral continuous feeding intelligent control device for tantalum-niobium alloy ore to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore, comprising a decomposition tank, a slurry mixing tank, a first motor, a second motor, a weight metering device, a third motor, a first pressure stabilizing barrel and a second pressure stabilizing barrel, wherein a discharge pipe is fixed to the bottom of the decomposition tank; a first stirring shaft is fixed to the output end of the third motor; a plurality of first stirring blades are fixed to the first stirring shaft; the output end of the first motor is connected to the second stirring shaft; the second stirring shaft extends into the slurry mixing tank; a plurality of second stirring blades are fixed to the second stirring shaft; a first arch-breaking nozzle and a second arch-breaking nozzle are provided at the bottom of the slurry mixing tank; the first arch-breaking nozzle and the second arch-breaking nozzle are respectively connected to a pulse-type arch breaker through a pipeline; the outlet end of the slurry mixing tank is connected to a shaftless screw feeder; the output end of the second motor is connected to a shaftless screw feeder; the other end of the shaftless screw feeder extends into the hopper; the weight metering device is provided on the shaftless screw feeder; the discharge pipe of the shaftless screw feeder A first switch valve is provided on the top; a first feed pipe is fixed on the hopper; a second switch valve is provided on the first feed pipe; the first feed pipe extends to the interior of the decomposition tank; a sulfuric acid pipe is connected to the first pressure-stabilizing barrel; a third feed pipe is fixed on the first pressure-stabilizing barrel; the other end of the third feed pipe extends to the first metering device; the first metering device is connected to the second feed pipe; the other end of the second feed pipe extends to the decomposition tank; the second pressure-stabilizing barrel is connected to the hydrofluoric acid pipe; the second pressure-stabilizing barrel is connected to the fourth feed pipe; the fourth feed pipe extends to the interior of the second metering device; the second metering device is connected to the fifth feed pipe; the fifth feed pipe extends to the interior of the decomposition tank; the third switch valve is provided on the fifth feed pipe; the second pneumatic control valve is provided on the fourth feed pipe; the second feed pipe is provided with a fourth switch valve; the third feed pipe is provided with a fifth switch valve; a fixed plate is fixed at the upper end of the interior of the decomposition tank; a water outlet structure and an exhaust pipe are provided on the decomposition tank; the water outlet structure and the exhaust pipe both extend to the interior of the decomposition tank.

[0005] Preferably, the fixed plate is provided with a first through hole for the first feed pipe to pass through; the fixed plate is provided with a second through hole for the second feed pipe to pass through; the fixed plate is provided with a third through hole for the fifth feed pipe to pass through; the fixed plate is provided with a fourth through hole for the water outlet structure to pass through; and the fixed plate is provided with a fifth through hole for the exhaust pipe to pass through.

[0006] Preferably, the weight measuring device, the hopper, the first meter and the second meter are made of transparent materials.

[0007] Preferably, the output end of the first motor is connected to the second stirring shaft via a first connecting flange.

[0008] Preferably, the output end of the third motor is connected to the first stirring shaft via a second connecting flange.

[0009] Preferably, the shaftless screw feeder is provided with a limiting hole for connecting to the outlet end of the slurry mixing tank.

[0010] Preferably, the water outlet structure includes a hollow rotating shaft mounted on a fixed plate through a sealed bearing, the lower end of the hollow rotating shaft extends to the inner upper part of the decomposition tank and is fixed with a water spray head, the upper end of the hollow rotating shaft extends to the outside and above the fixed plate and is connected to a sealed bearing flange connected to an external pipeline, a uniform speed electric motor is fixed on the fixed plate, a first transmission wheel is coaxially fixed to the output end of the uniform speed electric motor, a second transmission wheel is fixed on the hollow rotating shaft, and the first transmission wheel is connected to the second transmission wheel through a transmission belt.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The shaftless spiral continuous feeding, balanced reaction and intelligent control device for tantalum-niobium alloy minerals of the present invention integrates an ore feeding system, an acid adding system, a reaction system, an exhaust system, an emergency system and a control system. It not only solves the problems of continuous feeding, balanced reaction and controllable hydrogen generation rate in the acid leaching process of wet smelting of tantalum-niobium alloy minerals and safe production, but also greatly improves mechanical efficiency, reduces manpower and saves costs.

[0013] 2. The tantalum-niobium alloy mineral continuous feeding, balanced reaction and intelligent control device of the present invention has a simple structure, the software system can be completed by simple programming, and the connecting equipment can be completed by simple mechanical manufacturing, so it is easy to manufacture.

[0014] 3. The shaftless spiral continuous feeding, balanced reaction and intelligent control device of the tantalum-niobium alloy ore of the present invention make the rate of hydrogen generation from the tantalum-niobium alloy ore in the acid leaching decomposition section of the tantalum-niobium hydrometallurgy process controllable, thereby realizing the safe production of tantalum and niobium using tantalum-niobium alloy ore as raw material in large quantities by the tantalum-niobium hydrometallurgy.

[0015] 4. The shaftless spiral continuous feeding, balanced reaction and intelligent control device of the tantalum-niobium alloy ore of the present invention mixes water and tantalum-niobium alloy ore at a liquid-to-solid ratio of 1:4-1:10, which is different from the prior art in which water and tantalum-niobium alloy ore are fed at a liquid-to-solid ratio of 1:1-1:2. This reduces water usage, acid consumption, and production costs, while increasing production capacity and shortening production cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a shaftless spiral continuous feeding intelligent control device for tantalum-niobium alloy ore according to the present invention;

[0017] Figure 2 for Figure 1Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 3 This is a schematic diagram of the slurry mixing tank structure of a shaftless spiral continuous feeding intelligent control device for tantalum-niobium alloy ore of the present invention.

[0019] In the figure: 1-decomposition tank; 2-first stirring shaft; 3-first stirring blade; 4-slurry mixing tank; 5-first motor; 6-second stirring shaft; 7-second stirring blade; 8-first arch-breaking nozzle; 9-second arch-breaking nozzle; 10-second motor; 11-shaftless screw feeder; 12-weight measuring device; 13-hopper; 14-first feed pipe; 15-third motor; 16-second feed pipe; 17-first metering device; 18-third feed pipe; 19-fifth switch valve; 20-sulfuric acid pipe; 21-first pressure stabilizing tank; 22-hydrofluoric acid pipe; 23-second Pressure stabilizing barrel; 24-second pneumatic control valve; 25-fourth feed pipe; 26-second metering device; 27-fifth feed pipe; 28-fixed plate; 29-first switch valve; 30-second switch valve; 31-third switch valve; 32-fourth switch valve; 33-discharge pipe; 35-exhaust pipe; 36-pulse arch breaker; 38-water outlet structure; 381-hollow shaft; 382-sealed bearing; 383-spray head; 384-sealed bearing flange; 385-constant speed electric motor; 386-first transmission wheel; 387-second transmission wheel; 388-transmission belt. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "inclined," "oblique," "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features referred to. In addition, features defined as "first," "second," "third," "fourth," and "fifth" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "several" means one, two, or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] See also Figures 1 to 3As shown, the present invention provides a technical solution for a shaftless spiral continuous feeding intelligent control device for tantalum-niobium alloy ore: comprising a decomposition tank 1, a slurry mixing tank 4, a first motor 5, a second motor 10, a weight metering device 12, a third motor 15, a first pressure stabilizing tank 21 and a second pressure stabilizing tank 23, wherein a discharge pipe 33 is fixed to the bottom of the decomposition tank 1; a first stirring shaft 2 is fixed to the output end of the third motor 15; a plurality of first stirring blades 3 are fixed to the first stirring shaft 2; a second stirring shaft 6 is connected to the output end of the first motor 5; the second stirring shaft 6 extends into the slurry mixing tank 4; a plurality of first stirring blades 3 are fixed to the second stirring shaft 6 A plurality of second stirring blades 7; a first arch-breaking nozzle 8 and a second arch-breaking nozzle 9 are provided at the bottom of the slurry mixing tank 4; the first arch-breaking nozzle 8 and the second arch-breaking nozzle 9 are respectively connected to the pulse-type arch breaker 36 through pipelines; the outlet end of the slurry mixing tank 4 is connected to a shaftless screw feeder 11; the output end of the second motor 10 is connected to the shaftless screw feeder 11; the other end of the shaftless screw feeder 11 extends to the inside of the hopper 13; the shaftless screw feeder 11 is provided with a weight measuring device 12; the discharge pipe of the shaftless screw feeder 11 is provided with a first switch valve 29; the hopper 13 A first feed pipe 14 is fixed; a second switch valve 30 is provided on the first feed pipe 14; the first feed pipe 14 extends to the interior of the decomposition tank 1; a sulfuric acid pipe 20 is connected to the first pressure stabilizing tank 21; a third feed pipe 18 is fixed to the first pressure stabilizing tank 21; the other end of the third feed pipe 18 extends to the first metering device 17; the first metering device 17 is connected to the second feed pipe 16; the other end of the second feed pipe 16 extends to the decomposition tank 1; the second pressure stabilizing tank 23 is connected to the hydrofluoric acid pipe 22; the second pressure stabilizing tank 23 is connected to the fourth feed pipe 25; the fourth feed pipe 2 5 extends into the interior of the second metering device 26; the second metering device 26 is connected to a fifth feed pipe 27; the fifth feed pipe 27 extends into the interior of the decomposition tank 1; the fifth feed pipe 27 is provided with a third on-off valve 31; the fourth feed pipe 25 is provided with a second pneumatic control valve 24; the second feed pipe 16 is provided with a fourth on-off valve 32; the third feed pipe 18 is provided with a fifth on-off valve 19; a fixing plate 28 is fixed to the upper end of the interior of the decomposition tank 1; the decomposition tank 1 is provided with a water outlet structure 38 and an exhaust pipe 35; both the water outlet structure 38 and the exhaust pipe 35 extend into the interior of the decomposition tank 1.

[0024] In this embodiment, the fixing plate 28 is provided with a first through hole for the first feed pipe 14 to pass through; the fixing plate 28 is provided with a second through hole for the second feed pipe 16 to pass through; the fixing plate 28 is provided with a third through hole for the fifth feed pipe 27 to pass through; the fixing plate 28 is provided with a fourth through hole for the water outlet structure 38 to pass through; and the fixing plate 28 is provided with a fifth through hole for the exhaust pipe 35 to pass through.

[0025] In this embodiment, the weight measuring device 12 , the hopper 13 , the first meter 17 and the second meter 26 are made of transparent materials.

[0026] In this embodiment, the output end of the first motor 5 is connected to the second stirring shaft 6 via a first connecting flange.

[0027] In this embodiment, the output end of the third motor 15 is connected to the first stirring shaft 2 via a second connecting flange.

[0028] In this embodiment, a limiting hole for connecting to the outlet end of the slurry mixing tank 4 is provided on the shaftless screw feeder 11 .

[0029] In this embodiment, the water outlet structure 38 includes a hollow rotating shaft 381 mounted on the fixed plate 28 through a sealed bearing 382, the lower end of the hollow rotating shaft 381 extends to the inner upper part of the decomposition tank 1 and is fixed with a water spray head 383, the upper end of the hollow rotating shaft 381 extends to the outside of the fixed plate 28 and is connected to a sealed bearing flange 384 connected to the external pipeline, a uniform speed electric motor 385 is fixed on the fixed plate 28, and the output end of the uniform speed electric motor 385 is coaxially fixed with a first transmission wheel 386, and a second transmission wheel 387 is fixed on the hollow rotating shaft 381, and the first transmission wheel 386 is connected to the second transmission wheel 387 through a transmission belt 388.

[0030] The present invention's shaftless screw continuous feeding, balanced reaction, and intelligent control device for tantalum-niobium alloy ore comprises six components: an ore-feeding system, an acid-feeding system, a reaction system, an exhaust system, an emergency system, and a control system. The ore-feeding system includes a slurry mixing tank 4, a shaftless screw feeder 11, a weight metering device 12, a hopper 13, and a first feed pipe 14. The ore-feeding system controls the continuous and balanced addition of material to the decomposition tank 1 at a set rate. The acid-feeding system includes a sulfuric acid system and a hydrofluoric acid system. The sulfuric acid system includes a sulfuric acid pipe 20, a first pressure-stabilizing tank 21, a third feed pipe 18, a first meter 17, and a second feed pipe 16. The hydrofluoric acid system includes a hydrofluoric acid pipe 22, a second pressure-stabilizing tank 23, a fourth feed pipe 25, a second meter 26, and a fifth feed pipe 27. The acid-feeding system controls the continuous and balanced addition of sulfuric acid and hydrofluoric acid to the decomposition tank 1 at a set rate. The reaction system includes a decomposition tank 1, in which the tantalum-niobium alloy ore, sulfuric acid, and hydrofluoric acid react. The exhaust system includes an exhaust pipe 35, which is connected to the exhaust gas treatment system to promptly and quickly extract the exhaust gas generated in the decomposition tank 1. The emergency system includes a water outlet structure 38. When the amount of hydrogen in the decomposition tank 1 exceeds a critical value, the computer automatically controls the exhaust system to increase the exhaust volume and simultaneously activates the emergency system. The emergency system quickly sprays a large amount of tap water into the decomposition tank 1 through the water outlet structure 38, which rotates 360 degrees continuously. The tap water is evenly sprinkled into the decomposition tank 1. The control system uses the hydrogen content in the decomposition tank 1 as a dependent variable and is computer-controlled through software programming. It is connected to the ore adding system, acid adding system, reaction system, exhaust system, and emergency system. The specific working process is as follows: the top of the slurry mixing tank 4 is open, water and tantalum-niobium alloy ore are added to the slurry mixing tank 4 at a liquid-to-solid ratio of 1:4-1:10, and the first motor 5 is turned on to complete the mixing. Mixing water and tantalum-niobium alloy ore at a liquid-to-solid ratio of 1:4-1:10, unlike the prior art method of feeding water and tantalum-niobium alloy ore at a liquid-to-solid ratio of 1:1-1:2, reduces water usage, acid consumption, and production costs, while also increasing production capacity and shortening the production cycle. Mixing materials at a liquid-to-solid ratio of 1:4-1:10 results in dense materials with high specific gravity, prone to agglomeration and sedimentation, making mixing difficult and prone to bridging during feeding. To ensure smooth material feeding, a first arch-breaking nozzle 8 and a second arch-breaking nozzle 9 are installed in the slurry mixing tank 4. These first and second arch-breaking nozzles 8 and 9 vibrate simultaneously, breaking down the bridging phenomenon and ensuring smooth material feeding through the shaftless screw feeder 11. A weight metering device 12 accurately reflects the weight of the feed, and a hopper 13 with a weighing function reweighs the feed to ensure continuous and balanced material feeding. The weight metering device 12 and hopper 13 are made of transparent materials, allowing visualization of the feeding process. The first pressure stabilizing tank 21 and the second pressure stabilizing tank 23 independently maintain the same liquid level to ensure that the discharge speed of sulfuric acid and hydrofluoric acid is consistent.Confirm that the second motor 10, the first switch valve 29, the second switch valve 30, the second pneumatic valve 24, the third switch valve 31, the fourth switch valve 32, the fifth switch valve 19 and the third motor 15 are turned on. The switch valves are all electromagnetic control valves. At the same time, tantalum-niobium alloy mineral, sulfuric acid and hydrofluoric acid are added to the decomposition tank 1, and the acid leaching decomposition reaction of the tantalum-niobium alloy mineral wet smelting process begins. The hydrogen content in the decomposition tank 1 is the primary control factor. A hydrogen gas detector is provided in the decomposition tank 1 as a hydrogen detection point. When the hydrogen reaches a set maximum value (volume fraction of 3.8%), the computer automatically controls the ore adding system and the acid adding system to reduce the feed rate of the mineral and acid, and is equipped with corresponding metering pumps for control. The metering pumps are connected to a motor and are used to add sulfuric acid and hydrofluoric acid to the first pressure stabilizing tank 21 and the second pressure stabilizing tank 23, respectively. A PLC controller controls the relevant metering pumps, and the PLC controller signals are connected to a terminal such as a computer for operation to reduce the hydrogen content in the decomposition tank 1 to a reasonable range (volume fraction less than 3.8%). When the hydrogen content in the decomposition tank 1 is too low (volume fraction less than 1%), the computer automatically controls the ore adding system and the acid adding system to increase the feed rate of the mineral and acid, thereby improving the mineral decomposition efficiency. When the amount of hydrogen in the decomposition tank 1 exceeds the critical value, the computer automatically controls the exhaust system to increase the exhaust volume and simultaneously activates the emergency system. The emergency system quickly sprays a large amount of tap water into the decomposition tank 1. The tap water is evenly sprayed into the decomposition tank 1 to remove the large amount of foam generated and avoid overflowing. At the same time, it can reduce the concentration of acid and the temperature of the reaction materials in the decomposition tank 1, thereby reducing the mineral decomposition rate and the hydrogen concentration in the decomposition tank 1. When the hydrogen in the decomposition tank 1 is reduced to a reasonable range (volume fraction less than 3.8%), the emergency system automatically stops spraying tap water into the decomposition tank 1, and the exhaust system returns to its initial setting.

[0031] Working principle: The slurry mixing tank 4, the first motor 5, the second stirring shaft 6, the second stirring blade 7, the first arch breaking nozzle 8, the second arch breaking nozzle 9, the pulse arch breaker 36, the second motor 10, the shaftless screw feeder 11, the weight metering device 12, the first switch valve 29, the first feed pipe 14 and the hopper 13 of the device constitute the ore feeding system of the device, the second feed pipe 16, the first metering device 17, the third feed pipe 18, the fifth switch valve 19, the sulfuric acid pipe 20, the first pressure stabilizing tank 21, The hydrofluoric acid pipe 22, the second pressure stabilizing tank 23, the second pneumatic control valve 24, the fourth feed pipe 25, the second metering device 26 and the fifth feed pipe 27 constitute the acid adding system of this device. The third motor 15, the first stirring shaft 2 and the first stirring blade 3 of this device are the reaction system of this device. The combination of the water outlet structure 38 and the water pump is the emergency system of this device. The exhaust system of this device includes an exhaust pipe 35, which is connected to the exhaust gas treatment system to quickly and promptly extract the exhaust gas generated in the decomposition tank 1. The emergency system includes a water outlet structure 38. The control system of this device includes computer automatic control and PLC controller. This device includes six parts: ore adding system, acid adding system, reaction system, exhaust system, emergency system, and control system. The ore adding system, acid adding system, exhaust system, and emergency system are all connected to the reaction system. The control system controls all of the above links. The ore adding system consists of a slurry mixing tank 4, a first arch breaking nozzle 8, a second arch breaking nozzle 9, a pulse arch breaker 36, a second motor 10, a shaftless screw feeder 11, a weight metering device 12, a first feed pipe 14, and a hopper 13 to achieve continuous and balanced feeding of minerals, the acid adding system achieves continuous and balanced acid addition, and the reaction system achieves continuous and balanced reaction. The ore adding system, acid adding system, and reaction system can produce continuously, evenly, and stably. The rate of hydrogen generated after the reaction is controllable to achieve safe production. At the same time, under the action of the control system, the hydrogen content generated in the decomposition tank is used as the dependent variable to achieve intelligent linkage control, and an exhaust system and an emergency system are set to further improve the safety factor. Specifically, the hydrogen content in decomposition tank 1 is the primary control factor. When the hydrogen content in decomposition tank 1 reaches a set maximum value, the computer automatically controls the ore and acid feeding systems to reduce the feed rate of the ore and acid, reducing the hydrogen content in decomposition tank 1 to a reasonable range. When the hydrogen content in decomposition tank 1 is too low, the computer automatically controls the ore and acid feeding systems to increase the feed rate of the ore and acid, thereby improving the decomposition efficiency. When the hydrogen content in decomposition tank 1 exceeds a critical value, the computer automatically controls the exhaust system to increase the exhaust volume and activate the emergency system. The emergency system quickly sprays a large amount of tap water into the reaction tank, evenly distributing the water 360 degrees throughout the reaction tank. This aims to eliminate the excessive foaming and prevent overflowing. It also reduces the acid concentration in the reaction tank, thereby reducing the decomposition rate and the hydrogen concentration in the tank. When the hydrogen content in decomposition tank 1 drops to a reasonable range, the emergency system automatically stops spraying tap water, and the exhaust system returns to its initial setting.

[0032] Technical Effect: The present invention's shaftless spiral continuous feeding, balanced reaction, and intelligent control device for tantalum-niobium alloy minerals integrates an ore feeding system, an acid adding system, a reaction system, a ventilation system, an emergency system, and a control system. This device not only solves the problems of continuous feeding, balanced reaction, and safe production, but also significantly improves mechanical efficiency, reduces manpower, and saves costs. The continuous feeding, balanced reaction, and intelligent control device has a simple structure, and the software system can be easily programmed and the connecting equipment can be simply manufactured.

[0033] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore, characterized by: The invention comprises a decomposition tank (1), a slurry mixing tank (4), a first motor (5), a second motor (10), a weight metering device (12), a third motor (15), a first pressure stabilizing barrel (21) and a second pressure stabilizing barrel (23); a discharge pipe (33) is fixed to the bottom of the decomposition tank (1); a first stirring shaft (2) is fixed to the output end of the third motor (15); a plurality of first stirring blades (3) are fixed to the first stirring shaft (2); a second stirring shaft (6) is connected to the output end of the first motor (5); the second stirring shaft (6) extends into the interior of the slurry mixing tank (4); a plurality of second stirring blades (7) are fixed to the second stirring shaft (6); and a bottom portion of the interior of the slurry mixing tank (4) is provided with a plurality of second stirring blades (7). There are a first arch-breaking nozzle (8) and a second arch-breaking nozzle (9); the first arch-breaking nozzle (8) and the second arch-breaking nozzle (9) are respectively connected to a pulse-type arch breaker (36) through pipelines; the outlet end of the slurry mixing tank (4) is connected to a shaftless screw feeder (11); the output end of the second motor (10) is connected to the shaftless screw feeder (11); the other end of the shaftless screw feeder (11) extends into the interior of the hopper (13); a weight metering device (12) is provided on the shaftless screw feeder (11); a first switch valve (29) is provided on the discharge pipe of the shaftless screw feeder (11); a first delivery pipe (14) is fixed on the hopper (13); the first delivery pipe ( 14) is provided with a second switch valve (30); the first feed pipe (14) extends to the inside of the decomposition tank (1); the first pressure stabilizing tank (21) is connected to a sulfuric acid pipe (20); the first pressure stabilizing tank (21) is fixed with a third feed pipe (18); the other end of the third feed pipe (18) extends to the first metering device (17); the first metering device (17) is connected to a second feed pipe (16); the other end of the second feed pipe (16) extends to the decomposition tank (1); the second pressure stabilizing tank (23) is connected to a hydrofluoric acid pipe (22); the second pressure stabilizing tank (23) is connected to a fourth feed pipe (25); the fourth feed pipe (25) extends to the second metering device (2 6) inside; the second metering device (26) is connected to a fifth feed pipe (27); the fifth feed pipe (27) extends to the inside of the decomposition tank (1); the fifth feed pipe (27) is provided with a third switch valve (31); the fourth feed pipe (25) is provided with a second pneumatic control valve (24); the second feed pipe (16) is provided with a fourth switch valve (32); the third feed pipe (18) is provided with a fifth switch valve (19); a fixing plate (28) is fixed to the upper end of the inside of the decomposition tank (1); the decomposition tank (1) is provided with a water outlet structure (38) and an exhaust pipe (35); the water outlet structure (38) and the exhaust pipe (35) both extend to the inside of the decomposition tank (1).

2. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The fixing plate (28) is provided with a first through hole for the first material delivery pipe (14) to pass through; the fixing plate (28) is provided with a second through hole for the second material delivery pipe (16) to pass through; the fixing plate (28) is provided with a third through hole for the fifth material delivery pipe (27) to pass through; the fixing plate (28) is provided with a fourth through hole for the water outlet structure (38) to pass through; and the fixing plate (28) is provided with a fifth through hole for the exhaust pipe (35) to pass through.

3. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The weight measuring device (12), the hopper (13), the first meter (17) and the second meter (26) are made of transparent materials.

4. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The output end of the first motor (5) is connected to a second stirring shaft (6) via a first connecting flange.

5. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The output end of the third motor (15) is connected to the first stirring shaft (2) via a second connecting flange.

6. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The shaftless screw feeder (11) is provided with a limiting hole for connecting to the outlet end of the slurry mixing tank (4).

7. The intelligent control device for shaftless spiral continuous feeding of tantalum-niobium alloy ore according to claim 1, characterized in that: The water outlet structure (38) comprises a hollow rotating shaft (381) mounted on a fixed plate (28) via a sealed bearing (382); the lower end of the hollow rotating shaft (381) extends to the inner upper part of the decomposition tank (1) and is fixed with a water spray head (383); the upper end of the hollow rotating shaft (381) extends to the upper part of the outside of the fixed plate (28) and is connected with a sealed bearing flange (384) connected to an external pipeline; a uniform speed electric motor (385) is fixed on the fixed plate (28); a first transmission wheel (386) is coaxially fixed to the output end of the uniform speed electric motor (385); a second transmission wheel (387) is fixed on the hollow rotating shaft (381); the first transmission wheel (386) is transmission-connected to the second transmission wheel (387) via a transmission belt (388).

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