Ultrasonic-assisted ammonium perrhenate crystallization device

Abstract

The utility model discloses an ultrasonic-assisted ammonium perrhenate crystallization device which comprises a support, a crystallization tank is installed on the support, an ultrasonic generator is transversely arranged on the inner side wall of the vertical middle of the crystallization tank, and the tail end of the ultrasonic generator extends out of the side wall of the crystallization tank and is provided with an end cover. The ultrasonic generator which is transversely arranged is arranged on the inner side wall of the vertical middle part of the crystallizing tank for assisting crystallization, so that the contact area of the ultrasonic generator and liquid is maximized, the crystallizing speed is greatly increased, the granularity of a crystallized product is smaller, and meanwhile, the end cover is arranged at the tail end of the ultrasonic generator, so that the crystallization effect is better. The ultrasonic generator can be conveniently taken out of the crystallizing tank and is convenient to clean and maintain; the ultrasonic frequency of the ammonium perrhenate crystallization rate ultrasonic generator can be adjusted, the ammonium perrhenate crystallization rate ultrasonic generator can be suitable for different working conditions, and the ultrasonic generator is convenient to detach and convenient to clean and maintain. The technical problem that in the prior art, an ammonium perrhenate crystallization device is not high in efficiency is solved.

Description

Technical Field

[0001] The utility model belongs to the field of hydrometallurgical chemical product preparation and relates to a crystallization device, in particular to an ultrasound-assisted ammonium perrhenate crystallization device. Background Art

[0002] In the rhenium metal recovery system, controlling the crystallization process of rhenium-containing liquid is a key step in ensuring the quality of ammonium rhenate products. The existing industry generally adopts long-term static or mechanical stirring-assisted methods, which take a long time to crystallize, resulting in large product particle size and uncontrollable particle size range, which cannot meet the quality requirements of the back-end products. The defects of the existing technology are summarized as follows:

[0003] 1) The crystallization efficiency is low, and each crystallization takes more than 72 hours.

[0004] 2) The particle size of the crystallized product is uneven, and the general particle size is larger than the standard requirement.

[0005] 3) The crystallization process is uncontrollable and there is room for improvement in product quality. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an ultrasonic-assisted ammonium perrhenate crystallization device to solve the technical problem of low efficiency of the ammonium perrhenate crystallization device in the existing technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] An ultrasonic-assisted ammonium perrhenate crystallization device comprises a bracket on which a crystallization tank is mounted, wherein an ultrasonic generator arranged in a transverse direction is provided on the inner sidewall of the vertical middle portion of the crystallization tank, the distal end of the ultrasonic generator protruding from the sidewall of the crystallization tank and being provided with an end cap, and the ultrasonic generator is electrically connected to an external ultrasonic controller;

[0009] A conical crystallization groove is provided at the bottom of the crystallization tank, a discharge pipe is provided at the bottom outlet of the conical crystallization groove, and a discharge valve is provided on the discharge pipe.

[0010] The utility model also includes the following technical features:

[0011] A sight glass is provided on the upper part of the side wall of the crystallization tank.

[0012] A sealing cover is provided on the top of the crystallization tank.

[0013] A first sealing gasket is provided between the crystallization tank and the sealing cover.

[0014] A mounting hole is provided on the side wall of the crystallization tank, and the ultrasonic generator is arranged in the mounting hole.

[0015] A flange is provided on the mounting hole, and the flange is connected to the end cover with bolts.

[0016] A second sealing gasket is provided between the end cover and the flange.

[0017] The bottom outlet of the conical crystallization tank is connected to the discharge pipe through a clamp.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] In the present invention, an ultrasonic generator arranged laterally on the inner side wall of the vertical middle portion of the crystallization tank is provided to assist crystallization. This maximizes the contact area between the ultrasonic generator and the liquid, greatly improving the crystallization speed and reducing the particle size of the crystallized product. Furthermore, the end cap provided at the end of the ultrasonic generator facilitates removal of the ultrasonic generator from the crystallization tank for cleaning and maintenance. Furthermore, the ultrasonic frequency of the ultrasonic generator for ammonium perrhenate crystallization is adjustable, making it suitable for use in different working conditions. The ultrasonic generator is easily disassembled for easy cleaning and equipment maintenance. This solves the technical problem of low efficiency of ammonium perrhenate crystallization devices in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 A local enlarged schematic diagram in .

[0022] The meanings of the various numbers in the figure are: crystallization tank 1, sealing cover 2, sight glass 3, ultrasonic generator 4, flange 5, second sealing gasket 6, end cover 7, unloading valve 8, clamp 9, frequency modulation knob 10, power switch 11, bracket 12, ultrasonic controller 13, conical crystallization tank 14, discharge pipe 15.

[0023] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0024] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0025] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the scope of protection of the present invention.

[0026] The utility model provides an ultrasonic-assisted ammonium perrhenate crystallization device, comprising a bracket 12, a crystallization tank 1 is mounted on the bracket 12, an ultrasonic generator 4 arranged in a transverse direction is provided on the inner side wall of the vertical middle portion of the crystallization tank 1, the end of the ultrasonic generator 4 extends out of the side wall of the crystallization tank 1 and is mounted with an end cap 7, and an external ultrasonic controller 13 is electrically connected to the ultrasonic generator 4;

[0027] A conical crystallization tank 14 is provided at the bottom of the crystallization tank 1 , a discharge pipe 15 is provided at the bottom outlet of the conical crystallization tank 14 , and a discharge valve 8 is provided on the discharge pipe 15 .

[0028] In the above technical solution, the ultrasonic generator power switch 11 is first turned on. Then, ammonium rhenate is hot-melted and poured into the crystallization tank 1. The ultrasonic generator 4 is turned on and the ultrasonic power is set to 100% for the first hour. After observing the crystallization process, the ultrasonic frequency is reduced to 50% after 1 hour. After 12 hours, the ultrasonic power is reduced to 30%. Based on experience, samples are taken for testing after 24 hours. After the rhenium content in the liquid stabilizes, the output power is adjusted to 0 and the ultrasonic generator 4 is turned off. After crystallization is complete, the discharge valve 8 is opened and the crystallized product is discharged through the discharge pipe 15.

[0029] An ultrasonic generator 4 is arranged horizontally on the inner side wall of the vertical middle portion of the crystallizer 1 to assist in crystallization. This maximizes the contact area between the ultrasonic generator 4 and the liquid, greatly improving the crystallization speed and reducing the particle size of the crystallized product. Furthermore, an end cap is provided at the end of the ultrasonic generator, making it easy to remove the ultrasonic generator from the crystallizer for cleaning and maintenance. Furthermore, the ultrasonic frequency of the ultrasonic generator for ammonium perrhenate crystallization is adjustable, making it suitable for use in different working conditions. The ultrasonic generator is easily disassembled for easy cleaning and equipment maintenance. This solves the technical problem of low efficiency of ammonium perrhenate crystallization devices in the prior art.

[0030] A sight glass 3 is provided on the upper side wall of the crystallization tank 1 .

[0031] In the above technical solution, it is convenient to observe the crystallization process.

[0032] A sealing cover 2 is provided on the top of the crystallization tank 1 .

[0033] In the above technical solution, it is convenient to add materials.

[0034] A first sealing gasket is provided between the crystallization tank 1 and the sealing cover 2 .

[0035] In the above technical solution, it is used to prevent gas leakage during use.

[0036] A mounting hole is provided on the side wall of the crystallization tank 1 , and an ultrasonic generator 4 is arranged in the mounting hole.

[0037] A flange 5 is provided on the mounting hole, and the flange 5 is connected to the end cover 7 by bolts.

[0038] In the above technical solution, a flange bolt connection method is adopted to facilitate operators to clean and repair equipment.

[0039] A second sealing gasket 6 is provided between the end cover 7 and the flange 5 .

[0040] In the above technical solution, a polyfluorocarbon gasket is preferably used to prevent liquid leakage.

[0041] The bottom outlet of the conical crystallization tank 14 is connected to the discharge pipe 15 via a clamp 9 .

[0042] In the above technical solution, it is convenient for operators to disassemble, clean and repair.

[0043] Example:

[0044] From October to November 2023, based on on-site production needs, the rhenium purification team at the Jinduicheng Smelting Branch used new equipment to crystallize and purify 15kg of crude ammonium rhenate raw material. The ultrasonic frequency was set at 40kHz and the output power was maintained at 120W throughout the process. After approximately 39 hours of crystallization, the rhenium content in the solution stabilized, and the crystallization process was completed. The final crystallized product was dried and tested for particle size, revealing a 100% pass rate through a 200-mesh sieve. The calculated crystallization yield was 79.6%, achieving the desired results. A comparison of the results with conventional crystallization data under the same conditions revealed significant advantages in terms of production time, product particle size, and crystallization rate. The improvement in ammonium rhenate particle size was most significant.

Claims

1. An ultrasound-assisted ammonium perrhenate crystallization device, comprising a bracket (12), a crystallization tank (1) being mounted on the bracket (12), characterized in that: An ultrasonic generator (4) arranged in a transverse direction is provided on the inner side wall of the vertical middle portion of the crystallization tank (1), the end of the ultrasonic generator (4) extends out of the side wall of the crystallization tank (1) and is installed with an end cover (7), and the ultrasonic generator (4) is electrically connected to an external ultrasonic controller (13); The bottom of the crystallization tank (1) is provided with a conical crystallization tank (14), the bottom outlet of the conical crystallization tank (14) is provided with a discharge pipe (15), and the discharge pipe (15) is provided with a discharge valve (8).

2. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 1, wherein: A sight glass (3) is provided on the upper part of the side wall of the crystallization tank (1).

3. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 1, wherein: A sealing cover (2) is provided on the top of the crystallization tank (1).

4. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 3, wherein: A first sealing gasket is provided between the crystallization tank (1) and the sealing cover (2).

5. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 1, wherein: A mounting hole is provided on the side wall of the crystallization tank (1), and the ultrasonic generator (4) is arranged in the mounting hole.

6. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 5, characterized in that: A flange (5) is provided on the mounting hole, and the flange (5) is connected to the end cover (7) by bolts.

7. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 5, characterized in that: A second sealing gasket (6) is provided between the end cover (7) and the flange (5).

8. The ultrasonic-assisted ammonium perrhenate crystallization device according to claim 1, wherein: The bottom outlet of the conical crystallization tank (14) is connected to the discharge pipe (15) via a clamp (9).

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