Salt lake lithium extraction equipment

Abstract

The utility model relates to the technical field of material processing, in particular to salt lake lithium extraction equipment which comprises an equipment main body, and a brine collecting pump, a pretreatment case, a nano-filtration membrane filter, a reverse osmosis filter and an evaporation concentration tank are sequentially mounted at the top of the equipment main body from left to right. A purification and separation tank is mounted at the top of the equipment main body and located on the front side of the evaporation and concentration tank, a controller is mounted on the front side of the pretreatment case, a liquid supply pipe is mounted in the left side of the pretreatment case, one end of a brine collection pump is in through connection with the pretreatment case, and a filter cartridge is mounted at the top of the pretreatment case in an embedded manner; the whole equipment not only can be used for secondary circulation treatment of adsorption treatment discharge liquid and evaporation gas backflow, so that the purification utilization rate of lithium extracted by the equipment is improved, crystals in the evaporation concentration tank are convenient to clean, a precipitator is convenient to automatically meter and put into the purification separation tank, and solid-liquid separation is convenient to take out purified lithium and other solutions for use; therefore, the purification processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material processing, in particular to a salt lake lithium extraction device. Background Art

[0002] Salt lake is a kind of saltwater lake. It is a lake with high salinity in arid areas. It is the product of the development of lakes to old age. It is rich in sodium, potassium, magnesium, lithium and other salts. It is an important mineral resource. Salt lake lithium extraction equipment is used to extract and purify lithium from salt lake brine. Since lithium resources in salt lakes usually exist in the form of dissolved brine, specific technology and equipment are required to extract and purify lithium.

[0003] In the prior art, when lithium extraction is carried out by using salt lake lithium extraction equipment, brine containing lithium is usually collected from the salt lake using a pump and a conveying pipeline, and the collected brine is pretreated by a pretreatment box to remove impurities and suspended matter therein, and then lithium is extracted from the pretreated brine by adopting specific extraction technology, such as adsorption and evaporation concentration processing, and the lithium obtained by precipitation treatment of the concentrated liquid is further purified to remove impurities therein and achieve the required purity. In the existing adsorption extraction process, the secondary circulation treatment of the adsorption treatment discharge liquid and the evaporation gas reflux is not possible, thereby affecting the purification utilization rate of lithium extraction, and it is not convenient for the automatic metering of the crystal cleaning inside the evaporation concentration tank and the purification separation tank to add the precipitant and the convenient solid-liquid separation to remove the purified lithium and other solutions for use, thereby affecting the purification processing efficiency.

[0004] Therefore, it is necessary to design a salt lake lithium extraction equipment to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a salt lake lithium extraction device to improve the purification utilization rate and purification processing efficiency of the lithium extracted by the salt lake lithium extraction device, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A salt lake lithium extraction device comprises an equipment body, wherein a brine collection pump, a pretreatment chassis, a nanofiltration membrane filter, a reverse osmosis filter and an evaporation concentration tank are sequentially installed on the top of the equipment body from left to right, a purification separation tank is installed on the top of the equipment body and located in front of the evaporation concentration tank, a controller is installed on the front of the pretreatment chassis, one end of the brine collection pump is connected to the left side of the pretreatment chassis and a liquid supply pipe is installed inside, a filter cartridge is embedded in the top of the pretreatment chassis, a first electric control delivery pipe is installed at the bottom end of the inner wall of the pretreatment chassis, and the nanofiltration membrane filter is sequentially penetrated through the filter cartridge and the inside of the nanofiltration membrane filter, and the nanofiltration membrane filter is filtered. An electrically controlled discharge valve pipe is installed at the bottom of the device and located at the front edge of the built-in filter membrane assembly, a second electrically controlled delivery pipe is connected and penetrated between the nanometer filter and the back of the reverse osmosis filter, a first electrically controlled reflux pipe is installed on the front of the reverse osmosis filter and penetrated to the inside of the pretreatment chassis, a third electrically controlled delivery pipe is installed on the bottom of the reverse osmosis filter, which is located at the rear edge of the built-in filter membrane assembly and penetrates the left side of the evaporation and concentration tank, a second electrically controlled reflux pipe is installed on the back of the evaporation and concentration tank, which is connected to the rear edge of the top of the nanometer filter, and a fourth electrically controlled delivery pipe is installed on the front of the evaporation and concentration tank, which is connected to the rear edge of the top of the purification and separation tank.

[0008] As a preferred solution of the utility model, the other end of the brine collection pump extends to the interior of the salt lake and is equipped with a suction tube for collecting brine, and multiple brine collection pumps can be provided.

[0009] As a preferred solution of the utility model, electric heating plates are embedded and installed around the inner wall of the evaporation and concentration tank, a first electrically controlled discharge valve tube is installed on the right side of the evaporation and concentration tank, a first motor is embedded and installed at the center of the bottom end of the inner wall of the evaporation and concentration tank, a rotating scraper is installed at the top output end of the first motor, an electric lifting rod is embedded and installed around the top of the evaporation and concentration tank, and a ring-shaped scraper is installed at the bottom end of the electric lifting rod extending to the inside of the evaporation and concentration tank.

[0010] As a preferred solution of the utility model, a second motor is embedded and installed at the top center of the purification and separation tank, the bottom output end of the second motor extends through and extends to the interior of the purification and separation tank where an agitator is installed, a precipitant flow control valve tube is installed through and on the left side of the top of the purification and separation tank, an electrically-controlled drain valve tube is installed through and on the lower right edge of the purification and separation tank, a filter screen is embedded in and extended to the interior of the electrically-controlled drain valve tube, and a second electrically-controlled discharge valve is installed at the bottom center of the purification and separation tank.

[0011] As a preferred solution of the utility model, the controller is provided with multiple control display screens, a number of control buttons and a buzzer alarm, and the controller is electrically connected to the brine collection pump, the electric drainage valve tube, the electric heating plate, the first electric discharge valve tube, the first motor, the electric lifting rod, the second motor, the precipitant flow control valve tube, the electric drainage valve tube, the second electric discharge valve tube, the first electric delivery pipe, the electric discharge valve tube, the second electric delivery pipe, the third electric delivery pipe, the first electric reflux pipe, the second electric reflux pipe and the fourth electric delivery pipe.

[0012] As a preferred solution of the utility model, the electrically-controlled drain valve pipe and the first electrically-controlled discharge valve pipe, the electrically-controlled liquid discharge valve pipe, the second electrically-controlled discharge valve pipe and the electrically-controlled discharge valve pipe are all composed of electrically-controlled valves and connecting pipes, and the precipitant flow control valve pipe is composed of a flow meter, an electrically-controlled valve and a connecting pipe.

[0013] As a preferred solution of the utility model, the first electrically controlled delivery pipe, the second electrically controlled delivery pipe, the third electrically controlled delivery pipe, the first electrically controlled reflux pipe, the second electrically controlled reflux pipe and the fourth electrically controlled delivery pipe are all composed of an electrically controlled liquid pump and a circulation pipeline.

[0014] Beneficial effect: In view of the problem that the prior art cannot affect the efficiency of purification processing, in the utility model, brine containing lithium is collected from the salt lake by means of a brine collection pump, and the collected brine is pre-treated by a pre-treatment chassis equipped with a detachable filter cartridge to remove impurities and suspended matter therein, and then the brine is subjected to continuous adsorption and evaporation concentration processing under the automated transportation of the first electric-controlled delivery pipe, the second electric-controlled delivery pipe and the third electric-controlled delivery pipe through the nano-filtration membrane filter and the reverse osmosis filter and the evaporation concentration tank, lithium is extracted from the pre-treated brine, and the concentrated liquid is transported to the purification separation tank through the fourth electric-controlled delivery pipe for precipitation treatment, and the lithium obtained is further purified to remove impurities therein. and achieve the required purity, the first electrically-controlled reflux pipe is coordinated with the second reflux pipe to reflux the adsorption treatment discharge liquid and the evaporated gas in turn to the pretreatment chassis and the nano-filtration membrane filter for secondary circulation treatment, thereby improving the purification utilization rate of lithium extraction, and the annular scraper driven by the dynamic lifting rod is coordinated with the rotating scraper driven by the first motor to facilitate the cleaning of crystals inside the evaporation concentration tank, and the detachable filter screen plate is coordinated with the electrically-controlled drain valve pipe and the second electrically-controlled discharge valve pipe to conveniently separate the solid-liquid purified materials in the purification separation tank to take out the extracted solid pure lithium and other solutions for use, and the precipitant flow control valve pipe is automatically measured and accurately put into the purification separation tank, thereby improving the purification processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall stereogram of a salt lake lithium extraction device of the utility model;

[0016] Figure 2 This is a schematic diagram of the main internal structure of a salt lake lithium extraction device of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of a salt lake lithium extraction device viewed from above according to the utility model.

[0018] In the figure: 1. Equipment body; 2. Brine collection pump; 201. Liquid suction tube; 202. Liquid supply tube; 3. Pretreatment chassis; 301. Filter cartridge; 302. Electric drain valve tube; 4. Nanofiltration membrane filter; 5. Reverse osmosis filter; 6. Evaporation concentration tank; 601. Electric heating plate; 602. First electric discharge valve tube; 603. First motor; 604. Rotating scraper; 605. Electric lifting rod; 606. Annular scraper; 7. Pure separation tank; 701, second motor; 702, agitator; 703, precipitant flow control valve tube; 704, electric-controlled discharge valve tube; 705, filter screen; 706, second electric-controlled discharge valve tube; 8, controller; 9, first electric-controlled delivery pipe; 10, electric-controlled discharge valve tube; 11, second electric-controlled delivery pipe; 12, third electric-controlled delivery pipe; 13, first electric-controlled reflux pipe; 14, second electric-controlled reflux pipe; 15, fourth electric-controlled delivery pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0023] See also Figure 1-3 , the utility model provides a technical solution:

[0024] A salt lake lithium extraction device comprises a device body 1, wherein a brine collection pump 2, a pretreatment chassis 3, a nanofiltration membrane filter 4, a reverse osmosis filter 5 and an evaporation concentration tank 6 are sequentially installed on the top of the device body 1 from left to right, a purification separation tank 7 is installed on the top of the device body 1 and located in front of the evaporation concentration tank 6, a controller 8 is installed on the front of the pretreatment chassis 3, one end of the brine collection pump 2 is connected to the left side of the pretreatment chassis 3 and a liquid supply pipe 202 is installed, the other end of the brine collection pump 2 extends to the inside of the salt lake and a liquid suction pipe 201 for collecting brine is installed, and multiple brine collection pumps 2 can be provided, a filter cartridge 301 is embedded in the top of the pretreatment chassis 3, and the bottom end of the inner wall of the pretreatment chassis 3 sequentially passes through the filter cartridge 301 A first electrically controlled delivery pipe 9 is installed inside the nano-membrane filter 4, an electrically controlled discharge valve pipe 10 is installed at the bottom of the nano-membrane filter 4 and at the front edge of the built-in filter membrane assembly, a second electrically controlled delivery pipe 11 is connected and penetrated between the nano-membrane filter 4 and the back of the reverse osmosis filter 5, a first electrically controlled reflux pipe 13 is installed inside the front of the reverse osmosis filter 5 and is connected to the pre-treatment chassis 3, a third electrically controlled delivery pipe 12 is installed inside the bottom of the reverse osmosis filter 5 and is located at the rear edge of the built-in filter membrane assembly and penetrates the left side of the evaporation concentration tank 6, a second electrically controlled reflux pipe 14 is installed at the rear edge of the top of the nano-membrane filter 4 at the back of the evaporation concentration tank 6, and a front of the evaporation concentration tank 6 is connected to the rear of the top of the purification separation tank 7. A fourth electrically-controlled conveying pipe 15 is installed along the controller 8, and a plurality of control display screens, a plurality of control buttons and a buzzer alarm are provided on the controller 8. The controller 8 is electrically connected to the brine collection pump 2, the electrically-controlled drainage valve pipe 302, the electric heating plate 601, the first electrically-controlled discharge valve pipe 602, the first motor 603, the electric lifting rod 605, the second motor 701, the precipitant flow control valve pipe 703, the electrically-controlled discharge valve pipe 704, the second electrically-controlled discharge valve pipe 706, the first electrically-controlled conveying pipe 9, the electrically-controlled discharge valve pipe 10, the second electrically-controlled conveying pipe 11, the third electrically-controlled conveying pipe 12, the first electrically-controlled reflux pipe 13, the second electrically-controlled reflux pipe 14 and the fourth electrically-controlled conveying pipe 15. The electrically-controlled drainage valve pipe 302 is electrically connected to the first electrically-controlled discharge valve pipe 602, the electrically-controlled The discharge valve pipe 704, the second electrically controlled discharge valve pipe 706 and the electrically controlled discharge valve pipe 10 are all composed of electrically controlled valves and connecting pipes, and the precipitant flow control valve pipe 703 is composed of a flow meter, an electrically controlled valve and a connecting pipe. The first electrically controlled delivery pipe 9, the second electrically controlled delivery pipe 11, the third electrically controlled delivery pipe 12, the first electrically controlled reflux pipe 13, the second electrically controlled reflux pipe 14 and the fourth electrically controlled delivery pipe 15 are all composed of electrically controlled liquid pumps and circulation pipes. Through the nano-filtration membrane filter 4, the reverse osmosis filter 5 and the evaporation concentration tank 6, the adsorption and evaporation concentration continuous processing are carried out under the automatic transportation of the first electrically controlled delivery pipe 9, the second electrically controlled delivery pipe 11 and the third electrically controlled delivery pipe 12, so as to extract lithium from the pretreated brine.The concentrated liquid is transported to the purification separation tank 7 for precipitation treatment through the fourth electronically controlled delivery pipe 15, and the lithium obtained is further purified to remove impurities and achieve the required purity. The adsorption treatment discharge liquid and the evaporated gas are respectively refluxed and transported to the pretreatment box 3 and the nanofiltration membrane filter 4 in turn through the first electronically controlled reflux pipe 13 and the second reflux pipe 14 for secondary circulation treatment, thereby improving the purification utilization rate of lithium extraction.

[0025] Specifically, electric heating plates 601 are embedded and installed around the inner wall of the evaporation concentration tank 6, a first electrically controlled discharge valve tube 602 is installed on the right side of the evaporation concentration tank 6, a first motor 603 is embedded and installed at the center of the bottom end of the inner wall of the evaporation concentration tank 6, a rotating scraper 604 is installed at the top output end of the first motor 603, an electric lifting rod 605 is embedded and installed around the top of the evaporation concentration tank 6, and the bottom end of the electric lifting rod 605 extends to the inside of the evaporation concentration tank 6 and an annular scraper 606 is installed. The annular scraper driven by the moving lifting rod cooperates with the rotating scraper 604 driven by the first motor 603, so as to facilitate the cleaning of crystals inside the evaporation concentration tank 6.

[0026] Preferably, a second motor 701 is embedded and installed at the top center of the purification separation tank 7, and a stirrer 702 is installed at the bottom output end of the second motor 701 extending through and into the interior of the purification separation tank 7, a precipitant flow control valve tube 703 is installed through the left side of the top of the purification separation tank 7, and an electric-controlled drain valve tube 704 is installed through the lower right edge of the purification separation tank 7, a filter screen plate 705 is embedded in the top of the purification separation tank 7 and extends to the interior of the electric-controlled drain valve tube 704, and a second electric-controlled discharge valve is installed at the bottom center of the purification separation tank 7, and the purified material in the purification separation tank 7 can be conveniently separated into solid and liquid by the detachable filter screen plate 705 in conjunction with the electric-controlled drain valve tube 704 and the second electric-controlled discharge valve tube 706, so as to take out the purified solid pure lithium and other solutions for use, and the precipitant flow control valve tube 703 can be automatically and accurately measured to put the precipitant into the purification separation tank, thereby improving the purification processing efficiency.

[0027] In summary, the utility model can not only perform secondary circulation treatment of adsorption treatment discharge liquid and evaporation gas reflux, thereby improving the purification utilization rate of lithium extraction equipment, but also facilitates the automatic metering of precipitant into the crystallization cleaning inside the evaporation concentration tank and the purification separation tank, as well as convenient solid-liquid separation to remove purified lithium and other solutions for use, thereby improving the purification processing efficiency, which is very practical.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A salt lake lithium extraction device, comprising a device body (1), characterized in that The top of the equipment body (1) is provided with a brine collection pump (2), a pretreatment box (3), a nanofiltration membrane filter (4), a reverse osmosis filter (5) and an evaporation concentration tank (6) in sequence from left to right; a purification separation tank (7) is provided on the top of the equipment body (1) and located in front of the evaporation concentration tank (6); a controller (8) is provided on the front of the pretreatment box (3); one end of the brine collection pump (2) is connected to the left side of the pretreatment box (3) and a liquid supply pipe (202) is provided inside; a filter cartridge (301) is embedded in the top of the pretreatment box (3); a first electric control delivery pipe (9) is provided at the bottom end of the inner wall of the pretreatment box (3) and passes through the filter cartridge (301) and the inside of the nanofiltration membrane filter (4) in sequence; and the nanofiltration membrane filter (4) is provided with a first electric control delivery pipe (9) ) is installed at the bottom of the built-in filter membrane assembly and at the front edge of the built-in filter membrane assembly, a second electrically controlled delivery pipe (11) is installed between the nano-filtration membrane filter (4) and the back of the reverse osmosis filter (5), a first electrically controlled reflux pipe (13) is installed on the front of the reverse osmosis filter (5) and connected to the interior of the pretreatment cabinet (3), a third electrically controlled delivery pipe (12) is installed on the bottom of the reverse osmosis filter (5) and located at the rear edge of the built-in filter membrane assembly and connected to the left interior of the evaporation and concentration tank (6), a second electrically controlled reflux pipe (14) is installed on the back of the evaporation and concentration tank (6) and connected to the top rear edge of the nano-filtration membrane filter (4), and a fourth electrically controlled delivery pipe (15) is installed on the front of the evaporation and concentration tank (6) and connected to the top rear edge of the purification and separation tank (7).

2. A salt lake lithium extraction device according to claim 1, characterized in that: The other end of the brine collection pump (2) extends into the interior of the salt lake and is equipped with a suction pipe (201) for collecting brine, and a plurality of brine collection pumps (2) may be provided.

3. A salt lake lithium extraction device according to claim 1, characterized in that: An electric heating plate (601) is embedded and installed around the inner wall of the evaporation concentration tank (6); a first electrically controlled discharge valve tube (602) is installed on the right side of the evaporation concentration tank (6); a first motor (603) is embedded and installed at the center of the bottom end of the inner wall of the evaporation concentration tank (6); a rotating scraper (604) is installed at the top output end of the first motor (603); an electric lifting rod (605) is embedded and installed around the top of the evaporation concentration tank (6); and a ring-shaped scraper (606) is installed at the bottom end of the electric lifting rod (605) extending to the inside of the evaporation concentration tank (6).

4. A salt lake lithium extraction device according to claim 1, characterized in that: A second motor (701) is embedded and installed at the center of the top of the purification separation tank (7); the bottom output end of the second motor (701) extends through and extends to the interior of the purification separation tank (7) where an agitator (702) is installed; a precipitant flow control valve tube (703) is installed through the left side of the top of the purification separation tank (7); an electrically controlled drain valve tube (704) is installed through the lower right edge of the purification separation tank (7); a filter screen plate (705) is embedded in and extends to the interior of the electrically controlled drain valve tube (704) of the purification separation tank (7); and a second electrically controlled discharge valve is installed at the center of the bottom end of the purification separation tank (7).

5. The salt lake lithium extraction equipment according to claim 1, characterized in that: The controller (8) is provided with a plurality of control display screens and a plurality of control buttons and a buzzer alarm, and the controller (8) is electrically connected to the brine collection pump (2), the electrically controlled drainage valve tube (302), the electric heating plate (601), the first electrically controlled discharge valve tube (602), the first motor (603), the electric lifting rod (605), the second motor (701), the precipitant flow control valve tube (703), the electrically controlled discharge valve tube (704), the second electrically controlled discharge valve tube (706), the first electrically controlled delivery tube (9), the electrically controlled discharge valve tube (10), the second electrically controlled delivery tube (11), the third electrically controlled delivery tube (12), the first electrically controlled reflux tube (13), the second electrically controlled reflux tube (14) and the fourth electrically controlled delivery tube (15).

6. A salt lake lithium extraction device according to claim 5, characterized in that: The electrically controlled drain valve pipe (302), the first electrically controlled discharge valve pipe (602), the electrically controlled liquid discharge valve pipe (704), the second electrically controlled discharge valve pipe (706) and the electrically controlled discharge valve pipe (10) are all composed of electrically controlled valves and connecting pipes, and the precipitant flow control valve pipe (703) is composed of a flow meter, an electrically controlled valve and a connecting pipe.

7. The salt lake lithium extraction equipment according to claim 1, characterized in that: The first electrically controlled delivery pipe (9), the second electrically controlled delivery pipe (11), the third electrically controlled delivery pipe (12), the first electrically controlled return pipe (13), the second electrically controlled return pipe (14) and the fourth electrically controlled delivery pipe (15) are all composed of an electrically controlled liquid pump and a circulation pipeline.

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