Nickel sulfate airflow ultrasonic oxidation equipment

Abstract

The invention belongs to the technical field of chemistry and metallurgy, and particularly relates to nickel sulfate airflow ultrasonic oxidation equipment which comprises an oxygen leaching reaction kettle, an airflow ultrasonic oxidizer and a slurry pump, the upper side of one side wall of the oxygen leaching reaction kettle is fixedly communicated with a feeding valve, the outer end of the feeding valve is communicated with upstream equipment, and the two ends of the slurry pump are both communicated with circulation control valves. Wherein the outer end of one circulation control valve is communicated with the top of the airflow ultrasonic oxidizer through a guide pipe, and the output end of the other circulation control valve is communicated with the lower side of one side wall of the oxygen immersion reaction kettle through a guide pipe. The airflow ultrasonic generator is used for exciting the reed to vibrate by depending on gas as power, so that ultrasonic waves or strong sound waves are generated, and the cavitation effect of the ultrasonic waves in slurry is utilized, so that the speed of oxidation-reduction reaction is increased, the reaction efficiency is improved, deposited impurities are accelerated, and impurities in a nickel sulfate solution can be effectively removed; the dirt layer is dispersed and stripped through vibration and micro-jet impact force, and the cleaning effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of chemistry and metallurgy, and in particular to a nickel sulfate airflow ultrasonic oxidation device. Background Art

[0002] Nickel sulfate is an important inorganic salt. Nickel sulfate is widely used in many industries, including electroplating industry, catalytic industry, pharmaceutical industry, inorganic industry and printing and dyeing industry. With the rapid development of new energy industry, the demand for nickel sulfate is also increasing. In particular, with the popularization of new energy vehicles, as an important component of positive electrode materials for power batteries, the demand for nickel sulfate has increased significantly. For example, the increase in demand for ternary batteries has led to a sharp increase in demand for nickel sulfate as one of the indispensable raw materials in its manufacturing process. In addition, the production process of nickel sulfate is also constantly developing and optimizing to adapt to changes in market demand.

[0003] In the process of nickel sulfate oxygen leaching and iron removal, oxygen is directly introduced, and the nickel sulfate slurry is not in sufficient contact with oxygen, resulting in low catalytic efficiency and slow reaction rate. Sulfuric acid has low oxidizability and cannot oxidize elemental nickel into divalent nickel ions and combine with them to form nickel sulfate. Insufficient dissolution of nickel sulfate in oxygen will result in the product containing incompletely oxidized reducing substances, which will affect the chemical properties and uses of the product;

[0004] Although the nickel sulfate oxidizer uses electric ultrasonic waves for homogenization, it has a good homogenization effect, but it requires external electrical equipment, which is costly, consumes a lot of energy in long-term operation, and has a small processing capacity;

[0005] Nickel sulfate is a corrosive and irritating strong acidic substance. Electric ultrasonic waves cannot meet such working conditions and damage electrical components and contact parts, and the equipment cannot work normally.

[0006] It is very easy for debris to accumulate at the bottom of the nickel sulfate ultrasonic oxidizer. During use, it is easy to get clogged. The environment inside the cavity is harsh and manual cleaning is difficult.

[0007] Therefore, it is necessary to design a new technical solution. Summary of the invention

[0008] The purpose of the present invention is to provide a nickel sulfate airflow ultrasonic oxidation device to solve the problems raised in the background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a nickel sulfate airflow ultrasonic oxidation device, comprising an oxygen leaching reactor, an airflow ultrasonic oxidizer and a slurry pump, wherein a feed valve is fixedly connected to the upper side of one side wall of the oxygen leaching reactor, and the outer end of the feed valve is connected to an upstream device;

[0010] Both ends of the slurry pump are connected to circulation control valves, wherein the outer end of one of the circulation control valves is connected to the top of the airflow ultrasonic oxidizer through a conduit, and the output end of the other circulation control valve is connected to the lower side of a side wall of the oxygen impregnation reactor through a conduit. The tail end of the airflow ultrasonic oxidizer is fixedly connected to a discharge valve, and the output end of the discharge valve is connected to the side wall of the oxygen impregnation reactor through a conduit.

[0011] By adopting the above technical solution, nickel sulfate slurry is transported from the upstream equipment to the oxygen leaching reactor. When the slurry reaches the liquid level A, the feed valve is turned off, the circulation control valve and the slurry pump are opened, and the slurry enters the air flow ultrasonic oxidizer. At the same time, the discharge valve is opened, the slurry circulates continuously, and oxygen is introduced into the air flow ultrasonic oxidizer. After a circulation period of 3-6 hours, the slurry that meets the requirements can be discharged for filtration and impurity removal.

[0012] As a preferred embodiment of the present invention, the airflow ultrasonic oxidizer includes a cylinder, the top and bottom of the cylinder are respectively connected to an upper head and a lower head, both sides of the top of the upper head are fixedly connected to airflow ultrasonic reactors, one of the airflow ultrasonic reactors is connected to an oxygen supply pipe, a feed port is fixedly connected to the middle of the top of the upper head, four outlets are provided at the inner end of the feed port, the feed port is connected to the corresponding circulation control valve, a distributor is fixed on the upper side of the inner cavity of the cylinder, a discharge port assembly is fixedly connected to the tail end of the lower head, and the discharge port assembly is connected to the discharge valve.

[0013] By adopting the above technical scheme, the nickel sulfate slurry is transported to the feed port of the airflow ultrasonic oxidizer through a slurry pump. The feed port is evenly distributed on four outlets. The slurry is quickly evenly distributed on the distributor, and the liquid level quickly rises into the airflow ultrasonic reactor. The airflow ultrasonic reactor relies on gas as a power source to excite the reed to vibrate, thereby generating ultrasonic waves or strong sound waves. Oxygen is quickly dissolved in the nickel sulfate slurry, increasing the contact area between the nickel sulfate solution and oxygen, thereby accelerating the speed of the redox reaction, improving the reaction efficiency, and accelerating the deposition of impurities. Impurities in the nickel sulfate solution can be effectively removed because oxygen can promote the oxidation reaction of impurities, making it easier to separate impurities from the solution. This process not only improves the purity of the nickel sulfate solution, but also provides high-quality raw materials for subsequent nickel sulfate production.

[0014] As a preferred embodiment of the present invention, the discharge port assembly includes a lower barrel, which is connected to the tail end of the lower head, and the lower barrel is connected to a connecting pipe through a movable flange, and the connecting pipe is connected to the discharge valve, a nozzle is fixed on one side of the bottom of the lower barrel, and a reed whistle is fixed in one end of the nozzle inserted into the lower barrel, and an air intake control valve is connected between the nozzle and another of the airflow ultrasonic reactors.

[0015] By adopting the above technical scheme, during the continuous circulation of the nickel sulfate slurry between the oxygen immersion reactor and the airflow ultrasonic oxidizer, oxygen is introduced at a regular interval of 0.25-1 hour, and the air intake control valve is opened for 10 minutes of working time. Relying on gaseous oxygen as power, the reed whistle is stimulated to vibrate through the nozzle, thereby generating ultrasonic waves or strong sound waves. The nickel sulfate slurry at the discharge port is continuously mixed and stirred to clean impurities deposited at the discharge port, thereby preventing the nickel sulfate slurry from being blocked at the discharge port.

[0016] As a preferred embodiment of the present invention, the distributor includes a distribution plate and a bell mouth, the distribution plate is fixedly connected to the inner wall of the cylinder, the distribution plate is equipped with a bell mouth, there are multiple bell mouths, and the bell mouth is arranged facing the airflow ultrasonic reactor.

[0017] By adopting the above technical solution, the nickel sulfate slurry is fully in contact with oxygen and then enters the cylinder through the bell mouth.

[0018] As a preferred embodiment of the present invention, a manhole is provided on one side wall of the cylinder and the outer end of the manhole is detachably connected to a manhole cover.

[0019] As a preferred embodiment of the present invention, legs are fixed on both sides of the tail end of the lower head.

[0020] As a preferred embodiment of the present invention, one side of the top of the airflow ultrasonic oxidizer is connected to an oxygen supply pipe.

[0021] As a preferred embodiment of the present invention, the tail end of the oxygen immersion reactor is connected to a filtering and impurity removal container.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention adopts an airflow ultrasonic generator through an ultrasonic oxidizer, and the airflow ultrasonic reactor is directly opposite to the horn in the distributor, which is more conducive to the contact and dissolution of oxygen and nickel sulfate;

[0024] An airflow ultrasonic generator is set at the bottom of the ultrasonic oxidizer, which relies on gas (oxygen) as power to excite the reed to vibrate, thereby generating ultrasonic waves or strong sound waves. The cavitation effect of ultrasonic waves in the slurry is used to disperse and peel off the dirt layer through vibration and micro-jet impact force, thereby achieving a cleaning effect;

[0025] The recycling system process is adopted, and the material quality is controllable, providing high-quality raw materials for the subsequent nickel sulfate production;

[0026] The liquid level of the oxygen immersion reactor is maintained at A to ensure the circulating oxygen pressure conditions of the ultrasonic oxidizer, and to carry out oxygen pressure reaction, thereby improving the purity and yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of a nickel sulfate airflow ultrasonic oxidation device of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of an airflow ultrasonic oxidizer of an airflow ultrasonic oxidation device for nickel sulfate of the present invention;

[0030] Figure 3 It is a schematic diagram of the top view of the structure of a distributor of a nickel sulfate airflow ultrasonic oxidation device of the present invention;

[0031] Figure 4 The present invention is a schematic diagram of the discharge port structure of a nickel sulfate airflow ultrasonic oxidation device.

[0032] In the figure:

[0033] 1. Oxygen immersion reactor; 2. Feed valve; 3. Airflow ultrasonic oxidizer; 4. Discharge valve; 5. Inlet control valve; 6. Circulation control valve; 7. Slurry pump; 301. Upper head; 302. Airflow ultrasonic reactor; 303. Feed port; 304. Distributor; 30401. Distribution plate; 30402. Bell mouth; 305. Cylinder; 306. Manhole; 307. Lower head; 308. Leg; 309. Discharge port assembly; 30901. Lower barrel; 30902. Reed whistle; 30903. Movable flange; 30904. Nozzle. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The models of electrical appliances provided in the present invention are only for reference, and different models of electrical appliances with the same functions can be replaced according to actual usage.

[0037] See also Figure 1-4 The present invention provides a technical solution: a nickel sulfate airflow ultrasonic oxidation device, comprising an oxygen leaching reactor 1, an airflow ultrasonic oxidizer 3 and a slurry pump 7, wherein a feed valve 2 is fixedly connected to the upper side of one side wall of the oxygen leaching reactor 1, and the outer end of the feed valve 2 is connected to an upstream device;

[0038] Both ends of the slurry pump 7 are connected to circulation control valves 6, the outer end of one circulation control valve 6 is connected to the top of the airflow ultrasonic oxidizer 3 through a conduit, and the output end of the other circulation control valve 6 is connected to the lower side of a side wall of the oxygen immersion reactor 1 through a conduit. The tail end of the airflow ultrasonic oxidizer 3 is fixedly connected to a discharge valve 4, and the output end of the discharge valve 4 is connected to the side wall of the oxygen immersion reactor 1 through a conduit.

[0039] In actual use, nickel sulfate slurry is transported from the upstream equipment to the oxygen leaching reactor 1. When the slurry reaches the liquid level A, the feed valve 2 is turned off, the circulation control valve 6 and the slurry pump 7 are opened, and the slurry enters the airflow ultrasonic oxidizer 3. At the same time, the discharge valve 4 is opened, the slurry circulates continuously, and oxygen is introduced into the airflow ultrasonic oxidizer 3. After a circulation period of 3-6 hours, the slurry that meets the requirements is discharged for filtering and impurity removal.

[0040] Furthermore, the tail end of the oxygen immersion reactor 1 is connected to a filtering and impurity removal container, and the slurry that meets the requirements will be introduced into the filtering and impurity removal container for filtering and impurity removal treatment.

[0041] Furthermore, one side of the top of the airflow ultrasonic oxidizer 3 is connected to an oxygen supply pipe, and oxygen can be provided to the airflow ultrasonic oxidizer 3 through the oxygen supply pipe.

[0042] like Figure 1 and 2As shown in , 3 and 4, the airflow ultrasonic oxidizer 3 includes a cylinder 305, the top and bottom of the cylinder 305 are respectively connected to an upper head 301 and a lower head 307, both sides of the top of the upper head 301 are fixedly connected to airflow ultrasonic reactors 302, one of which is connected to the oxygen supply pipe, a feed port 303 is fixedly connected to the middle of the top of the upper head 301, and four outlets are arranged at the inner end of the feed port 303, and the feed port 303 is connected to the corresponding circulation control valve 6, a distributor 304 is fixedly provided on the upper side of the inner cavity of the cylinder 305, and a discharge port assembly 309 is fixedly connected to the tail end of the lower head 307, and the discharge port assembly 309 is connected to the discharge valve 4;

[0043] In actual use, the nickel sulfate slurry is transported to the feed port 303 of the airflow ultrasonic oxidizer 3 through the slurry pump 7. The feed port 303 is evenly distributed on four outlets. The slurry is quickly evenly distributed on the distributor 304, and the liquid level quickly rises into the airflow ultrasonic reactor 302. The airflow ultrasonic reactor 302 relies on gas as power to excite the reed to vibrate, thereby generating ultrasonic waves or strong sound waves. Oxygen is quickly dissolved in the nickel sulfate slurry, increasing the contact area between the nickel sulfate solution and oxygen, thereby accelerating the speed of the redox reaction, improving the reaction efficiency, and accelerating the deposition of impurities. Impurities in the nickel sulfate solution can be effectively removed because oxygen can promote the oxidation reaction of impurities, making it easier to separate impurities from the solution. This process not only improves the purity of the nickel sulfate solution, but also provides high-quality raw materials for subsequent nickel sulfate production.

[0044] Furthermore, legs 308 are fixed on both sides of the tail end of the lower head 307 . The arrangement of the legs 308 can ensure the stability of the airflow ultrasonic oxidizer 3 .

[0045] Furthermore, a manhole 306 is formed on one side wall of the cylinder 305 and a manhole cover is detachably connected to the outer end of the manhole 306 .

[0046] It is worth mentioning that the distributor 304 includes a distribution plate 30401 and a bell-mouth 30402. The distribution plate 30401 is fixedly connected to the inner wall of the cylinder 305. The distribution plate 30401 is equipped with a bell-mouth 30402. The number of the bell-mouths 30402 is 4, 6 or 8. The bell-mouths 30402 are arranged facing the airflow ultrasonic reactor 302. After the nickel sulfate slurry is fully in contact with oxygen, it enters the cylinder 305 through the bell-mouth 30402.

[0047] It should be noted that the discharge port assembly 309 includes a lower barrel 30901, the lower barrel 30901 is connected to the rear end of the lower head 307, the lower barrel 30901 is connected to a connecting pipe through a movable flange 30903, the connecting pipe is connected to the discharge valve 4, a nozzle 30904 is fixed through one side of the bottom of the lower barrel 30901, the nozzle 30904 is inserted into one end of the lower barrel 30901 and a reed whistle 30902 is fixed therein, and an air intake control valve 5 is connected between the nozzle 30904 and another airflow ultrasonic reactor 302;

[0048] During the continuous circulation of the nickel sulfate slurry between the oxygen immersion reactor 1 and the airflow ultrasonic oxidizer 3, oxygen is introduced at a regular interval of 0.25-1 hour / time. The air intake control valve 5 is opened for 10 minutes of working time. Relying on the gas oxygen as the power, the nozzle 30904 excites the reed whistle 30902 to vibrate, thereby generating ultrasonic waves or strong sound waves. The nickel sulfate slurry at the discharge port is continuously mixed and stirred to clean up impurities deposited at the discharge port to prevent the nickel sulfate slurry from being blocked at the discharge port.

[0049] The implementation principle of a nickel sulfate air flow ultrasonic oxidation device of the present application is as follows: in actual use, the nickel sulfate slurry is transported from the upstream equipment to the oxygen leaching reactor 1, the slurry reaches the liquid level A, the feed valve 2 is turned off, the circulation control valve 6 and the slurry pump 7 are opened, the slurry enters the air flow ultrasonic oxidizer 3, and the discharge valve 4 is opened at the same time, the slurry is continuously circulated, and oxygen is introduced into the air flow ultrasonic oxidizer 3, the nickel sulfate slurry is transported to the feed port 303 of the air flow ultrasonic oxidizer 3 through the slurry pump 7, the feed port 303 is evenly distributed at four outlets, the slurry is quickly evenly distributed on the distributor 304, the liquid level quickly rises to the air flow ultrasonic reactor 302, and the air flow ultrasonic reactor 302 depends on the air flow ultrasonic reactor 302. The body acts as a driving force to stimulate the reed to vibrate, thereby generating ultrasonic waves or strong sound waves. Oxygen quickly dissolves in the nickel sulfate slurry, increasing the contact area between the nickel sulfate solution and oxygen, thereby accelerating the speed of the redox reaction, improving the reaction efficiency, and accelerating the deposition of impurities. Impurities in the nickel sulfate solution can be effectively removed. When the nickel sulfate slurry is discharged from the airflow ultrasonic oxidizer 3, the reed whistle 30902 is stimulated to vibrate through the nozzle 30904, thereby generating ultrasonic waves or strong sound waves. The nickel sulfate slurry at the discharge port is continuously mixed and stirred to clean up impurities deposited at the discharge port to prevent the nickel sulfate slurry from being blocked at the discharge port. After a cycle of 3-6 hours, the slurry that meets the requirements can be discharged for filtration and impurity removal.

[0050] In addition, the components included in the nickel sulfate airflow ultrasonic oxidation equipment of the present invention are all universal standard parts or components known to technical personnel in this field. The structure and principle can be known to technical personnel through technical manuals or through conventional experimental methods. In the idle part of the device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adaptive monitoring computers and power supplies are connected through wires. The specific connection means should refer to the following working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A nickel sulfate air flow ultrasonic oxidation device, comprising an oxygen immersion reactor (1), an air flow ultrasonic oxidizer (3) and a slurry pump (7), characterized in that: A feed valve (2) is fixedly connected to the upper side of one side wall of the oxygen immersion reactor (1), and the outer end of the feed valve (2) is connected to the upstream equipment; Both ends of the slurry pump (7) are connected to circulation control valves (6), wherein the outer end of one of the circulation control valves (6) is connected to the top of the airflow ultrasonic oxidizer (3) through a conduit, and the output end of the other circulation control valve (6) is connected to the lower side of a side wall of the oxygen immersion reactor (1) through a conduit. The tail end of the airflow ultrasonic oxidizer (3) is fixedly connected to a discharge valve (4), and the output end of the discharge valve (4) is connected to the side wall of the oxygen immersion reactor (1) through a conduit.

2. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 1, characterized in that: The airflow ultrasonic oxidizer (3) comprises a cylinder (305), the top and bottom of the cylinder (305) are respectively connected to an upper head (301) and a lower head (307), both sides of the top of the upper head (301) are fixedly connected to airflow ultrasonic reactors (302), one of the airflow ultrasonic reactors (302) is connected to an oxygen supply pipe, a feed port (303) is fixedly connected to the middle of the top of the upper head (301), four outlets are arranged at the inner end of the feed port (303), the feed port (303) is connected to a corresponding circulation control valve (6), a distributor (304) is fixedly provided on the upper side of the inner cavity of the cylinder (305), a discharge port assembly (309) is fixedly connected to the tail end of the lower head (307), and the discharge port assembly (309) is connected to the discharge valve (4).

3. A nickel sulfate airflow ultrasonic oxidation device according to claim 2, characterized in that: The discharge port assembly (309) includes a lower barrel (30901), the lower barrel (30901) is connected to the rear end of the lower head (307), the lower barrel (30901) is connected to a connecting pipe via a movable flange (30903), the connecting pipe is connected to a discharge valve (4), a nozzle (30904) is fixed through one side of the bottom of the lower barrel (30901), a reed whistle (30902) is fixed inside one end of the nozzle (30904) inserted into the lower barrel (30901), and an air intake control valve (5) is connected between the nozzle (30904) and another of the airflow ultrasonic reactors (302).

4. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 2, characterized in that: The distributor (304) includes a distribution plate (30401) and a bell mouth (30402), wherein the distribution plate (30401) is fixedly connected to the inner wall of the cylinder (305), and a bell mouth (30402) is installed on the distribution plate (30401), and the number of the bell mouths (30402) is multiple, and the bell mouths (30402) are arranged directly facing the airflow ultrasonic reactor (302).

5. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 2, characterized in that: A manhole (306) is provided on one side wall of the cylinder (305), and the outer end of the manhole (306) is detachably connected to a manhole cover.

6. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 2, characterized in that: Support legs (308) are fixed on both sides of the tail end of the lower sealing head (307).

7. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 1, characterized in that: One side of the top of the airflow ultrasonic oxidizer (3) is connected to an oxygen supply pipe.

8. The nickel sulfate airflow ultrasonic oxidation equipment according to claim 1, characterized in that: The tail end of the oxygen immersion reactor (1) is connected to a filtering and impurity removal container.

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