Tantalum and niobium natural sedimentation recovery system

Abstract

The utility model provides a natural tantalum and niobium settling and recycling system, which belongs to the technical field of tantalum and niobium hydrometallurgy wastewater treatment and comprises a tantalum washing water settling unit, a niobium washing water settling unit and a washing water caching unit. According to the natural settling and recycling system for tantalum and niobium, tantalum hydroxide in tantalum washing water is settled and recycled through the tantalum washing water settling unit, niobium hydroxide in niobium washing water is settled and recycled through the niobium washing water settling unit, on one hand, tantalum hydroxide / niobium hydroxide intermediate products with high economic value can be recycled, and on the other hand, the tantalum washing water settling unit and the niobium washing water settling unit can be recycled; and on the other hand, the blockage of the multi-stage membrane caused by tantalum hydroxide / niobium hydroxide in the washing water can be avoided, and the service life of the multi-stage membrane can be prolonged to more than one year. In addition, the washing water subjected to natural sedimentation treatment can be used for preparing an ammonium fluoride product with higher purity. After the tantalum-niobium natural sedimentation recovery system is started, the production cost of an enterprise can be obviously reduced, and the economic benefit of the enterprise can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tantalum niobium wet metallurgy wastewater treatment technical field, more specifically, relate to a kind of tantalum niobium natural sedimentation recovery system. BACKGROUND

[0002] In the tantalum niobium wet metallurgy process, generally, ammonia is added to fluoroniobate / fluorotantalate solution, and niobium hydroxide / tantalum hydroxide is obtained by neutralization and precipitation, then after pressure filtration and washing, niobium hydroxide / tantalum hydroxide intermediate product and washing water are obtained. The washing water also contains a certain amount of niobium hydroxide / tantalum hydroxide particulate matter. The conventional production process is to use the washing water containing the particulate matter for the preparation of ammonium fluoride product after multi-stage membrane concentration.

[0003] Then, due to the presence of a certain amount of niobium hydroxide / tantalum hydroxide particulate matter in the washing water, the multi-stage membrane is easily blocked, so the multi-stage membrane needs to be replaced every month or so, greatly increasing the production cost of the enterprise, and also causing the loss of the high economic value niobium hydroxide / tantalum hydroxide, and is not conducive to the subsequent preparation of high-purity ammonium fluoride product. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of tantalum niobium natural sedimentation recovery system to recover niobium hydroxide / tantalum hydroxide in washing water, while prolonging the service life of multi-stage membrane, reducing the production cost of enterprise and improving the economic benefit of enterprise, and also obtaining higher-purity ammonium fluoride product.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of tantalum niobium natural sedimentation recovery system, comprising:

[0006] The tantalum washing water sedimentation unit comprises a plurality of tantalum washing water sedimentation tanks connected in series, and a first balance liquid outlet pipe is installed in each tantalum washing water sedimentation tank. The first balance liquid outlet pipe comprises a first elbow pipe, a first vertical pipe and a first horizontal pipe connected with each other. The first connecting pipe is connected between adjacent two tantalum washing water sedimentation tanks. One end of the first connecting pipe is communicated with the first horizontal pipe, and the other end is communicated with the liquid inlet of the tantalum washing water sedimentation tank. A first drain pipe is connected to the lower side of each tantalum washing water sedimentation tank.

[0007] The niobium washing water sedimentation unit comprises a plurality of niobium washing water sedimentation tanks connected in series, and a second balance liquid outlet pipe is installed in each niobium washing water sedimentation tank. The second balance liquid outlet pipe comprises a second elbow pipe, a second vertical pipe and a second horizontal pipe connected with each other. The second connecting pipe is connected between adjacent two niobium washing water sedimentation tanks. One end of the second connecting pipe is communicated with the second horizontal pipe, and the other end is communicated with the liquid inlet of the niobium washing water sedimentation tank. A second drain pipe is connected to the lower side of each niobium washing water sedimentation tank.

[0008] The washing water buffer unit comprises a plurality of washing water buffer tanks connected in series, and a third drain pipe is connected to the lower side of each washing water buffer tank, and two adjacent washing water buffer tanks are communicated through a third connecting pipe.

[0009] A drain valve is arranged on each of the first drain pipe, the second drain pipe and the third drain pipe, and the first drain pipe, the second drain pipe and the third drain pipe are communicated with a washing water outlet pipeline.

[0010] The liquid outlet pipe of the tantalum washing water sedimentation unit and the liquid outlet pipe of the niobium washing water sedimentation unit are communicated with the liquid inlet pipe of the washing water buffer unit.

[0011] Further, a first manhole is arranged on each tantalum washing water sedimentation tank.

[0012] Further, a second manhole is arranged on each niobium washing water sedimentation tank.

[0013] Further, the height of the lower end of the first vertical pipe from the bottom of the tantalum washing water sedimentation tank is greater than the thickness of the maximum deposition layer in the tank.

[0014] Further, the height of the lower end of the second vertical pipe from the bottom of the niobium washing water sedimentation tank is greater than the thickness of the maximum deposition layer in the tank.

[0015] Further, a first bottom liquid discharge outlet is arranged on the lower side of each tantalum washing water sedimentation tank, and the first bottom liquid discharge outlet is located on the lower side of the first drain pipe.

[0016] Further, a second bottom liquid discharge outlet is arranged on the lower side of each niobium washing water sedimentation tank, and the second bottom liquid discharge outlet is located on the lower side of the second drain pipe.

[0017] Further, the first elbow pipe is a reverse U-shaped elbow pipe.

[0018] Further, the second elbow pipe is a reverse U-shaped elbow pipe.

[0019] Further, a third balance liquid outlet pipe is arranged in each washing water buffer tank, and the third balance liquid outlet pipe comprises a third elbow pipe, a third vertical pipe and a third horizontal pipe which are connected to each other; one end of the third connecting pipe is communicated with the third horizontal pipe, and the other end is communicated with the liquid outlet of the washing water buffer tank.

[0020] Further, a third manhole is arranged on each washing water buffer tank.

[0021] Compared with the prior art, the utility model has the following technical effects:

[0022] The tantalum-niobium natural sedimentation recovery system can recover and utilize the high economic value intermediate product of tantalum hydroxide / niobium hydroxide, avoid the multi-stage membrane blockage caused by the tantalum hydroxide / niobium hydroxide in the washing water, prolong the service life of the multi-stage membrane, and make the service life of the multi-stage membrane be prolonged to more than one year. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 A structure schematic view of the tantalum-niobium natural sedimentation recovery system provided by the embodiments of the present application is shown in the figure.

[0025] Figure 2 A structure schematic view of the first balance liquid outlet pipe provided by the embodiments of the present application is shown in the figure.

[0026] In the figure, various reference signs are as follows:

[0027] 1, tantalum washing water sedimentation tank, 2, first balance liquid outlet pipe, 3, first connecting pipe, 4, first drain pipe, 5, niobium washing water sedimentation tank, 6, second balance liquid outlet pipe, 7, second connecting pipe, 8, second drain pipe, 9, washing water buffer tank, 10, third drain pipe, 11, third connecting pipe, 12, washing water outlet pipeline, 13, liquid outlet pipe of the tantalum washing water sedimentation unit, 14, liquid outlet pipe of the niobium washing water sedimentation unit, 15, liquid inlet pipe of the washing water buffer unit, 16, third balance liquid outlet pipe, 101, first manhole, 102, first bottom liquid discharge outlet, 201, first elbow pipe, 202, first vertical pipe, 203, first horizontal pipe, 501, second manhole, 502, second bottom liquid discharge outlet, 901, third manhole. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0029] In the utility model, the term "and / or" describes the association relationship of the associated objects, and indicates that three relationships can exist, for example, A and / or B can indicate that A exists alone, A and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after it are in an "or" relationship.

[0030] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] The terms used in the embodiments of the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. The singular forms "a", "said" and "the" used in the embodiments of the utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0033] The terms "first", "second" are only for the purpose of description, used to distinguish objects such as substances from each other, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, without departing from the scope of the embodiments of the utility model, the first XX can also be referred to as the second XX, and similarly, the second XX can also be referred to as the first XX. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0034] Please refer to Figure 1 , Figure 2 Now a tantalum niobium natural sedimentation recovery system provided by the embodiments of the utility model will be described.

[0035] In one embodiment of this utility model, a tantalum-niobium natural sedimentation recovery system includes a tantalum wash water sedimentation unit, a niobium wash water sedimentation unit, and a wash water buffer unit. The tantalum wash water sedimentation unit includes multiple tantalum wash water sedimentation tanks 1 connected in series. Each tantalum wash water sedimentation tank 1 is equipped with a first balance outlet pipe 2, which includes a first elbow pipe 201, a first vertical pipe 202, and a first horizontal pipe 203 connected to each other. Adjacent tantalum wash water sedimentation tanks 1 are connected by a first connecting pipe 3, one end of which is connected to the first horizontal pipe 203, and the other end is connected to the inlet of the tantalum wash water sedimentation tank 1. A first drain pipe 4 is connected to the lower side of each tantalum wash water sedimentation tank 1.

[0036] The niobium wash water settling unit includes multiple niobium wash water settling tanks 5 connected in series. Each niobium wash water settling tank 5 is equipped with a second balance outlet pipe 6. The second balance outlet pipe 6 includes a second elbow pipe, a second vertical pipe and a second horizontal pipe connected to each other. Two adjacent niobium wash water settling tanks 5 are connected by a second connecting pipe 7. One end of the second connecting pipe 7 is connected to the second horizontal pipe and the other end is connected to the inlet of the niobium wash water settling tank 5. A second drain pipe 8 is connected to the lower side of each niobium wash water settling tank 5.

[0037] The wash water buffer unit includes multiple wash water buffer tanks 9 connected in series; each wash water buffer tank 9 is connected to a third drain pipe 10 on its lower side, and two adjacent wash water buffer tanks 9 are connected by a third connecting pipe 11.

[0038] Drain valves are installed on the first drain pipe 4, the second drain pipe 8, and the third drain pipe 10. The first drain pipe 4, the second drain pipe 8, and the third drain pipe 10 are all connected to the wash water outlet pipeline 12. The liquid outlet pipe 13 of the tantalum wash water settling unit and the liquid outlet pipe 14 of the niobium wash water settling unit are connected to the liquid inlet pipe 15 of the wash water buffer unit.

[0039] In this embodiment, the first balancing outlet pipe 2 has a three-way structure, with its first elbow pipe 201 extending outside the tantalum wash water settling tank 1 and exposed to the atmosphere to balance the air pressure inside the tank. The lower end of its first vertical pipe 202 is below the liquid surface inside the tantalum wash water settling tank 1. The wash water in the tantalum wash water settling tank 1 enters from the lower end of the first vertical pipe 202 and flows out from the first horizontal pipe 203, then flows through the first connecting pipe 3 into another adjacent tantalum wash water settling tank 1. The shape and structure of the second balancing outlet pipe 6 are the same as those of the first balancing outlet pipe 2. Both the first elbow pipe 201 and the second elbow pipe can be configured as inverted U-shaped bends.

[0040] The utility model embodiment's one tantalum niobium natural settlement recovery system in use, tantalum washes water from the first tantalum washes water settlement tank 1 on the import flows into the tantalum washes water settlement tank 1, then through the first connecting pipe 3 between the jar natural overflow in turn to the each tantalum washes water settlement tank 1 of the following series, finally through the liquid outlet pipe 13 of tantalum washes water settlement unit flows into the multiple washes water buffer tank 9 of washes water buffer unit, through the third drain pipe 10 of washes water buffer tank 9 lower side is converged into washes water outlet pipeline 12, enters the subsequent ammonium fluoride preparation process. Similarly, niobium washes water from the first niobium washes water settlement tank 5 on the import flows into the niobium washes water settlement tank 5, then through the second connecting pipe 7 between the jar natural overflow in turn to the each niobium washes water settlement tank 5 of the following series, finally through the liquid outlet pipe 14 of niobium washes water settlement unit flows into the multiple washes water buffer tank 9 of washes water buffer unit, through the third drain pipe 10 of washes water buffer tank 9 lower side is converged into washes water outlet pipeline 12, enters the subsequent ammonium fluoride preparation process.

[0041] When the utility model embodiment's one tantalum niobium natural settlement recovery system in settlement is enough in the tantalum hydroxide / niobium hydroxide, needs to clean out, close tantalum washes water settlement unit and niobium washes water settlement unit's washes water import, simultaneously opens the drain valve of first drain pipe 4, second drain pipe 8, third drain pipe 10 on setting, let upper washes water confluence to washes water outlet pipeline 12, enter the subsequent ammonium fluoride preparation process. After the upper washes water is drained, again clean out the tantalum hydroxide / niobium hydroxide that settles in the bottom of each tantalum washes water settlement tank 1 and niobium washes water settlement tank 5, recycle and utilize.

[0042] The utility model embodiment's one tantalum niobium natural settlement recovery system through tantalum washes water settlement unit and niobium washes water settlement unit respectively tantalum washes water in the tantalum hydroxide settlement recovery, niobium washes water in the niobium hydroxide settlement recovery, on the one hand can recycle and utilize the high economic value tantalum hydroxide / niobium hydroxide intermediate product, on the other hand can avoid the tantalum hydroxide / niobium hydroxide in washes water and cause multistage membrane blockage, prolong the service life of multistage membrane, so that the service life of multistage membrane can be prolonged to more than one year. In addition, the washes water after natural settlement treatment can prepare the ammonium fluoride product of higher purity. The utility model embodiment's one tantalum niobium natural settlement recovery system after starting, can reduce the enterprise production cost significantly and promote enterprise economic benefits.

[0043] Further, the first manhole 101 is installed on each tantalum washes water settlement tank 1, the settlement in the tantalum washes water settlement tank 1 can be observed through the first manhole 101 and the tantalum hydroxide that settles down can be cleaned out.

[0044] Further, the second manhole 501 is installed on each niobium washes water settlement tank 5, the settlement in the niobium washes water settlement tank 5 can be observed through the second manhole 501 and the niobium hydroxide that settles down can be cleaned out.

[0045] Further, the height of the lower end of the first vertical pipe 202 from the bottom of the tantalum washing water sedimentation tank 1 is greater than the thickness of the maximum deposition layer inside the tank. This ensures that the lower end of the first balanced liquid outlet pipe has sufficient distance from the bottom of the tantalum washing water sedimentation tank 1, avoiding the upper layer of tantalum hydroxide particles that have settled down from flowing away with the overflow, resulting in a decrease in the sedimentation effect.

[0046] Further, the height of the lower end of the second vertical pipe from the bottom of the niobium washing water sedimentation tank 5 is greater than the thickness of the maximum deposition layer inside the tank. This ensures that the lower end of the second balanced liquid outlet pipe has sufficient distance from the bottom of the niobium washing water sedimentation tank 5, avoiding the upper layer of niobium hydroxide particles that have settled down from flowing away with the overflow, resulting in a decrease in the sedimentation effect.

[0047] Further, the lower side of each tantalum washing water sedimentation tank 1 is also provided with a first bottom liquid discharge outlet 102, which is located on the lower side of the first drain pipe 4. The first bottom liquid discharge outlet 102 is used for the discharge of cleaning waste liquid during the cleaning of the interior of the tantalum washing water sedimentation tank 1.

[0048] Further, the lower side of each niobium washing water sedimentation tank 5 is also provided with a second bottom liquid discharge outlet 502, which is located on the lower side of the second drain pipe 8. The second bottom liquid discharge outlet 502 is used for the discharge of cleaning waste liquid during the cleaning of the interior of the niobium washing water sedimentation tank 5.

[0049] Further, the lower side of each washing water buffer tank 9 is also provided with a third bottom liquid discharge outlet, which is located on the lower side of the third drain pipe 10. The third bottom liquid discharge outlet is used for the discharge of cleaning waste liquid during the cleaning of the interior of the washing water buffer tank 9.

[0050] Further, each washing water buffer tank 9 is installed with a third balanced liquid outlet pipe 16, which includes a third elbow pipe, a third vertical pipe and a third horizontal pipe connected to each other; one end of the third connecting pipe 11 communicates with the third horizontal pipe, and the other end communicates with the liquid outlet of the washing water buffer tank 9. The shape and structure of the third balanced liquid outlet pipe 16 are the same as those of the first balanced liquid outlet pipe 2.

[0051] Further, each washing water buffer tank 9 is installed with a third manhole 901, through which the situation of the washing water in the washing water buffer tank 9 can be observed.

[0052] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A tantalum-niobium natural sedimentation recovery system, characterized by, The application relates to a tantalum washing water sedimentation unit, a niobium washing water sedimentation unit and a washing water buffer unit. The tantalum washing water sedimentation unit comprises a plurality of tantalum washing water sedimentation tanks connected in series, a first balance liquid outlet pipe is arranged in each of the tantalum washing water sedimentation tanks, the first balance liquid outlet pipe comprises a first elbow pipe, a first vertical pipe and a first horizontal pipe which are connected with each other, two adjacent tantalum washing water sedimentation tanks are communicated through a first connecting pipe, one end of the first connecting pipe is communicated with the first horizontal pipe, and the other end is communicated with a liquid inlet of the tantalum washing water sedimentation tank, and a first drain pipe is arranged at the lower side of each tantalum washing water sedimentation tank. The niobium washing water sedimentation unit comprises a plurality of niobium washing water sedimentation tanks connected in series, a second balance liquid outlet pipe is arranged in each of the niobium washing water sedimentation tanks, the second balance liquid outlet pipe comprises a second elbow pipe, a second vertical pipe and a second horizontal pipe which are connected with each other, two adjacent niobium washing water sedimentation tanks are communicated through a second connecting pipe, one end of the second connecting pipe is communicated with the second horizontal pipe, and the other end is communicated with a liquid inlet of the niobium washing water sedimentation tank, a second drain pipe is arranged at the lower side of each niobium washing water sedimentation tank, and a washing water buffer unit comprises a plurality of washing water buffer tanks connected in series. A third drain pipe is arranged at the lower side of each washing water buffer tank, and two adjacent washing water buffer tanks are communicated through a third connecting pipe. Drain valves are arranged on the first drain pipe, the second drain pipe and the third drain pipe, and the first drain pipe, the second drain pipe and the third drain pipe are communicated with a washing water outlet pipeline. Liquid outlet pipes of the tantalum washing water sedimentation unit, liquid outlet pipes of the niobium washing water sedimentation unit and liquid inlet pipes of the washing water buffer unit are communicated.

2. A tantalum-niobium natural settlement recovery system according to claim 1, characterized in that, A first manhole is arranged on each tantalum washing water sedimentation tank.

3. A tantalum-niobium natural settlement recovery system according to claim 1, characterized in that, A second manhole is arranged on each niobium washing water sedimentation tank.

4. A tantalum-niobium natural settlement recovery system according to claim 1, characterized in that, The lower end of the first vertical pipe is higher than the thickness of the maximum deposition layer in the tantalum washing water sedimentation tank.

5. A tantalum-niobium natural sedimentation recovery system as claimed in claim 1, characterized in that, The lower end of the second vertical pipe is higher than the thickness of the maximum deposition layer in the niobium washing water sedimentation tank.

6. A tantalum-niobium natural sedimentation recovery system as claimed in claim 1, characterized in that, A first bottom liquid discharge outlet is arranged at the lower side of each tantalum washing water sedimentation tank.

7. A tantalum-niobium natural sedimentation recovery system as claimed in claim 1, characterized in that, A second bottom liquid discharge outlet is arranged at the lower side of each niobium washing water sedimentation tank.

8. A tantalum-niobium natural settlement recovery system as claimed in claim 1, characterized in that, The first elbow pipe is a reverse U-shaped elbow pipe.

9. A tantalum-niobium natural sedimentation recovery system as claimed in claim 1, characterized in that, The second elbow pipe is a reverse U-shaped elbow pipe.

10. A tantalum-niobium natural sedimentation recovery system according to any one of claims 1 to 9, characterized in that, A third balance liquid outlet pipe is arranged in each washing water buffer tank, the third balance liquid outlet pipe comprises a third elbow pipe, a third vertical pipe and a third horizontal pipe which are connected with each other, one end of the third connecting pipe is communicated with the third horizontal pipe, and the other end is communicated with a liquid outlet of the washing water buffer tank, and / or A third manhole is arranged on each washing water buffer tank.

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