CN216395314U - System for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater - Google Patents
System for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater Download PDFInfo
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- CN216395314U CN216395314U CN202122220737.2U CN202122220737U CN216395314U CN 216395314 U CN216395314 U CN 216395314U CN 202122220737 U CN202122220737 U CN 202122220737U CN 216395314 U CN216395314 U CN 216395314U
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- evaporator
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- magnesium chloride
- magnesium sulfate
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Abstract
The utility model discloses a system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater, which comprises the following steps: the device comprises a liquid storage tank, an evaporator, a condenser, a forced circulation pump and a rotary drum scraper discharging device; the liquid storage tank is used for storing mother liquor and is communicated with a feed inlet of the evaporator through a pipeline; a steam outlet of the evaporator is communicated with a condenser pipeline, and a discharge hole at the lower end of the evaporator is communicated with an internal pipeline of the evaporator through a forced circulation pump to form a loop; wherein, the lower end discharge port of the evaporator also feeds materials to the rotary drum scraper discharging device through a pipeline. According to the system for crystallizing the magnesium chloride from the rare earth magnesium sulfate wastewater, the existing equipment is reasonably integrated and optimized, and the magnesium chloride can be efficiently crystallized at least to a certain extent.
Description
Technical Field
The utility model relates to the technical field of magnesium chloride crystallization devices, in particular to a system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater.
Background
At present, the methods adopted by various processes for treating the magnesium sulfate wastewater in the rare earth smelting are summarized mainly by a chemical method, an ion exchange method, a distillation concentration method, a membrane technical treatment method and the like. The methods play a good role in treating rare earth smelting, but have the defects of complex structure, large investment, large occupied area, high operating cost, high energy consumption, difficult maintenance and operation, poor sewage purification effect, discharge after reaching the standard, incapability of recycling water and other resources, incapability of achieving final treatment, incapability of recycling magnesium sulfate and magnesium chloride and the like to different degrees. Therefore, the equipment and the device for crystallizing the magnesium chloride have larger room for improvement.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater, which can at least crystallize magnesium chloride to a certain extent by reasonably integrating the existing equipment.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater, which comprises the following steps: the device comprises a liquid storage tank, an evaporator, a condenser, a forced circulation pump and a rotary drum scraper discharging device;
the liquid storage tank is used for storing mother liquor and is communicated with a feed inlet of the evaporator through a pipeline; a steam outlet of the evaporator is communicated with a condenser pipeline, and a discharge hole at the lower end of the evaporator is communicated with an internal pipeline of the evaporator through a forced circulation pump to form a loop;
wherein, the lower end discharge port of the evaporator also feeds materials to the rotary drum scraper discharging device through a pipeline.
In some embodiments, the rotary drum blade outfeed device comprises: the rotary drum is rotatably erected on the rack around a transverse shaft, and the liquid containing groove is positioned below the rotary drum; the rack is obliquely provided with a scraping piece, the higher end of the scraping piece is abutted against the outer surface of the rotary drum, and the lower end of the scraping piece discharges materials.
In some embodiments, the scraping blade is rotatably arranged on the frame around a transverse shaft, and a balancing weight is connected to the bottom of the scraping blade and applies force to enable the higher end of the scraping blade to be tightly abutted against the outer surface of the rotary drum.
In some embodiments, the outer circumference of the drum is further provided with a plurality of annular fins arranged at intervals along the axial direction of the drum, and correspondingly, the higher end of the scraper is provided with a through groove matched with the annular fins.
In some embodiments, the annular fin has open slots radially disposed thereon.
In some embodiments, the higher end of the wiper blade is fitted with a rubber plate that abuts the outer circumference of the drum.
In some embodiments, further comprising: and the feed inlet of the spiral conveyor is positioned below the discharge position of the scraping piece.
In some embodiments, the drum is hollow, and the interior of the drum is connected with the cold air source pipeline after being connected with the rotary joint through one shaft end.
In some embodiments, the evaporator is a steam jacketed evaporator.
Compared with the prior art, the utility model has the beneficial effects that: the system for crystallizing the magnesium chloride from the rare earth magnesium sulfate wastewater provided by the utility model can be used for crystallizing the magnesium chloride at high efficiency to at least a certain extent by reasonably integrating the existing equipment.
In addition, the equipment layout formed by the system is more reasonable, and the magnesium chloride is crystallized from the rare earth magnesium sulfate wastewater more pertinently, so that the system is suitable for being popularized and used in a large quantity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a system connection according to an embodiment of the present invention;
FIG. 2 is a schematic main sectional view of the rotary drum scraper discharging device of FIG. 1 according to the present invention;
FIG. 3 is a schematic top view of FIG. 2 according to the present invention;
FIG. 4 is a left side view of the structure of FIG. 2 according to the present invention.
In the figure: 1. a liquid storage tank; 2. an evaporator; 3. a condenser; 4. a forced circulation pump; 5. a rotary drum scraper discharging device; 51. a drum; 52. a liquid containing groove; 53. scraping a blade; 54. a balancing weight; 55. an annular fin; 56. a swivel joint; 6. a screw conveyor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, fig. 1 is a schematic diagram of system connections according to an embodiment of the utility model; FIG. 2 is a schematic main sectional view of the rotary drum scraper discharging device of FIG. 1 according to the present invention; FIG. 3 is a schematic top view of FIG. 2 according to the present invention; FIG. 4 is a left side view of the structure of FIG. 2 according to the present invention.
In a specific embodiment, an embodiment of the present invention provides a system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater, including: a liquid storage tank 1, an evaporator 2, a condenser 3, a forced circulation pump 4 and a rotary drum scraper discharging device 5;
the liquid storage tank 1 is used for storing mother liquor and is communicated with a feed inlet of the evaporator 2 through a pipeline; a steam outlet of the evaporator 2 is communicated with a pipeline of the condenser 3, and a discharge hole at the lower end of the evaporator 2 is communicated with an internal pipeline of the evaporator 2 through a forced circulation pump 4 to form a loop;
wherein, the lower end discharge hole of the evaporator 2 also feeds materials to a rotary drum scraper discharging device 5 through a pipeline.
In the specific use process, after the rare earth magnesium sulfate wastewater concentrated solution is subjected to flash evaporation and crystallization in a crystal growth tank, heptahydrate magnesium sulfate solid is filtered out by a centrifuge, centrifuged magnesium sulfate and magnesium chloride mother liquor enters a liquid storage tank 1 and is pumped into an evaporator 2 by a pump, steam above the evaporator 2 condenses moisture in the mother liquor into a condensate water tank by a condenser 3, the mother liquor in the evaporator 2 is circulated by a forced circulation pump 4 to reach a certain concentration and then enters a rotary drum scraper discharging device 5 for condensation scraping to obtain crystallized magnesium chloride, and the crystallized magnesium chloride is packaged and weighed.
In order to realize efficient crystallization, in the present embodiment, the rotary drum scraper discharging device 5 optionally includes: the rotary drum type refrigerator comprises a cylindrical rotary drum 51 which is rotatably erected on a rack around a transverse shaft, and a liquid containing tank 52 which is positioned below the rotary drum 51, wherein two ends of the rotary drum 51 are rotatably installed on the rack through bearing assemblies, one end of the rotary drum 51 can be in transmission connection with a speed reducer, and a refrigeration source is arranged in the rotary drum 51; a scraping blade 53 is obliquely arranged on the frame, the higher end of the scraping blade 53 is abutted with the outer surface of the rotary drum 51, and the lower end of the scraping blade 53 discharges materials. The liquid tank 52 contains a certain concentration of mother liquid discharged from the evaporator 2, the outer circumference below the rotary drum 51 is immersed in the mother liquid in the liquid tank 52, when the rotary drum 51 rotates, the mother liquid adhered to the outer surface is cooled and crystallized into a sheet under the cooling effect of the cooling source, and then scraped off from the outer circumference of the rotary drum 51 under the effect of the scraper 53.
Further, the scraping blade 53 is rotatably arranged on the frame around a transverse shaft, the bottom of the scraping blade 53 is connected with a balancing weight 54, the balancing weight 54 applies force to enable the higher end of the scraping blade 53 to be abutted against the outer surface of the rotating drum 51, and when the scraping blade 53 is worn, the balancing weight 54 enables the scraping blade 53 to still have the abutting force with the outer surface of the rotating drum 51.
Still further, the outer circumference of the rotary drum 51 is further provided with a plurality of annular fins 55, the annular fins 55 are arranged at intervals along the axial direction of the rotary drum 51, and correspondingly, the higher end of the scraping blade 53 is provided with a through groove matched with the annular fins 55. The annular fin 55 can effectively increase the cooling area and improve the crystallization efficiency. Preferably, the ring-shaped fins 55 are provided with open slots along the radial direction, so that when the scraping blades 53 scrape the ring-shaped fins 55, the scraping force can be suddenly released through the open slots, thereby facilitating the blanking and preventing the long continuous material from being formed.
Still further, the higher end of the scraping blade 53 is provided with a rubber plate which is abutted with the outer circumference of the rotary drum 51, and the rubber plate is convenient to replace after being worn.
In addition, still include: and a feed inlet of the spiral conveyor 6 is positioned below the discharge position of the scraping blade 53, so that centralized material collection is facilitated.
Furthermore, the drum 51 is hollow, and the interior of the drum is connected to the swivel joint 56 through an axial end and then connected to a cold air source pipeline, and the cold air source continuously provides cold air to the interior of the drum 51 for crystallization.
The evaporator 2 is a steam jacketed evaporator.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the utility model using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the utility model.
Claims (9)
1. A system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater is characterized by comprising: a liquid storage tank (1), an evaporator (2), a condenser (3), a forced circulation pump (4) and a rotary drum scraper discharging device (5);
the liquid storage tank (1) is used for storing mother liquid and is communicated with a feed inlet of the evaporator (2) through a pipeline; a steam outlet of the evaporator (2) is communicated with a pipeline of the condenser (3), and a discharge hole at the lower end of the evaporator (2) is communicated with an internal pipeline of the evaporator (2) through a forced circulation pump (4) to form a loop;
wherein, the lower end discharge hole of the evaporator (2) also feeds materials to the rotary drum scraping sheet discharging device (5) through a pipeline.
2. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in claim 1, wherein the rotary drum scraper discharging device (5) comprises: the refrigerating device comprises a cylindrical rotary drum (51) which is rotatably erected on a rack around a transverse shaft, and a liquid containing tank (52) which is positioned below the rotary drum (51), wherein a refrigerating source is arranged in the rotary drum (51); a scraping blade (53) is obliquely arranged on the frame, the higher end of the scraping blade (53) is abutted against the outer surface of the rotary drum (51), and the lower end of the scraping blade is used for discharging.
3. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in claim 2, wherein the scraping blade (53) is rotatably arranged on the frame around a transverse shaft, the bottom of the scraping blade (53) is connected with a balancing weight (54), and the balancing weight (54) applies force to enable the higher end of the scraping blade (53) to be abutted against the outer surface of the rotating drum (51).
4. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in claim 2, wherein the outer circumference of the rotary drum (51) is further provided with a plurality of annular fins (55), the annular fins (55) are arranged at intervals along the axial direction of the rotary drum (51), and correspondingly, the higher end of the scraping blade (53) is provided with a through groove matched with the annular fins (55).
5. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in claim 4, wherein the annular fin (55) is provided with an open slot along the radial direction.
6. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in any one of claims 2 to 5, wherein a rubber plate abutting against the outer circumference of the rotary drum (51) is mounted at the higher end of the scraping blade (53).
7. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in any one of claims 2 to 5, further comprising: the feeding port of the spiral conveyor (6) is positioned below the discharging position of the scraping blade (53).
8. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in any one of claims 2 to 5, wherein the rotary drum (51) is hollow, and the interior of the rotary drum is connected with a cold air source pipeline after being connected with a rotary joint (56) through one shaft end.
9. The system for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater as claimed in any one of claims 1 to 5, wherein the evaporator (2) is a steam jacketed evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122220737.2U CN216395314U (en) | 2021-09-14 | 2021-09-14 | System for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122220737.2U CN216395314U (en) | 2021-09-14 | 2021-09-14 | System for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216395314U true CN216395314U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122220737.2U Active CN216395314U (en) | 2021-09-14 | 2021-09-14 | System for crystallizing magnesium chloride from rare earth magnesium sulfate wastewater |
Country Status (1)
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| CN (1) | CN216395314U (en) |
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2021
- 2021-09-14 CN CN202122220737.2U patent/CN216395314U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A system for crystallization of magnesium chloride from rare earth magnesium sulfate wastewater Effective date of registration: 20220721 Granted publication date: 20220429 Pledgee: Baotou Nanjiao Rural Credit Union Co.,Ltd. Pledgor: Baotou jiamengtai Environmental Protection Technology Co.,Ltd. Registration number: Y2022150000076 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |