A water atomization device for producing nickel-iron alloy powder

Abstract

This invention relates to the field of battery raw material pretreatment and processing technology, and specifically discloses a water atomization device for producing nickel-iron alloy powder, comprising: a smelting furnace; an intermediate ladle located below the smelting furnace and having an outlet; a melt filter located below the intermediate ladle, with the outlet opposite to the filter; a water atomizer located below the melt filter, comprising a water atomizing cylinder and a first opening and a second opening connecting the cylinder, the first opening being located at one end of the atomizer and the second opening at the other end; a water atomizing disc mounted on the atomizer, installed at the first opening, partially located within the water atomizing cylinder, with the disc opposite to the outlet of the melt filter; and a water atomizing cone located within the water atomizing cylinder, positioned near the second opening of the water atomizing disc. Through this method, this invention can obtain nickel-iron alloy powder, improving leaching efficiency.

Description

Technical Field

[0001] This invention relates to the field of battery raw material processing technology, and in particular to a water atomization device for producing nickel-iron alloy powder. Background Technology

[0002] Nickel-iron alloys are products of laterite nickel ore smelting. The raw material composition varies considerably, resulting in diverse alloy shapes. These alloys are characterized by high hardness and good ductility. A common pretreatment process involves mechanically impacting the alloy material to transform it into thin alloy flakes, followed by physical crushing to break the flakes.

[0003] The inventors of this invention have discovered that the pretreatment process in the prior art produces irregularly shaped lumps with a particle size greater than 20mm. This results in a long leaching process, insufficient reaction, the need for repeated leaching, low production efficiency, and high consumption of auxiliary materials and energy, which greatly affects the efficiency of the downstream synthesis process. Summary of the Invention

[0004] In view of the above problems, the present invention provides a water atomization device for producing nickel-iron alloy powder, which overcomes the problems of large particle size of the block material, long time consumption of subsequent leaching process, insufficient reaction, need for repeated leaching, low production efficiency, large consumption of auxiliary materials and energy, and the impact on the efficiency of downstream synthesis process.

[0005] According to one aspect of the present invention, a water atomization apparatus for producing nickel-iron alloy powder is provided, comprising: a smelting furnace for melting nickel-iron alloy into nickel-iron molten material; an intermediate ladle located below the smelting furnace, the intermediate ladle being used to hold the nickel-iron molten material, the intermediate ladle being provided with a liquid outlet; a melt strainer disposed below the intermediate ladle, the melt strainer being disposed opposite to the liquid outlet; and a water atomizer disposed below the melt strainer, the water atomizer being provided with a water atomizing cylinder and a first opening and a second opening communicating with the water atomizing cylinder. The water atomizer has two openings: a first opening at one end and a second opening at the other end; a water atomizing disc installed on the water atomizer and partially located within the water atomizing cylinder; and a water atomizing cone disposed within the water atomizing cylinder, positioned close to the second opening of the water atomizer, allowing at least a portion of the material sieved by the water atomizing cone to flow out from the second opening.

[0006] In one alternative embodiment, the water atomizing cone includes a sieving column, one end of which is connected to the second opening. The sieving column is provided with a hollow cavity and a plurality of sieving holes communicating with the hollow cavity. The plurality of sieving holes are disposed on the outer surface of the sieving column, and the hollow cavity communicates with the second opening.

[0007] In an alternative embodiment, the water atomizing cone further includes a buffer cone connected to the other end of the screening column, the buffer cone being disposed opposite to the water atomizing disc.

[0008] In one alternative embodiment, the water atomizer is provided with a slag outlet, which is connected to the water atomizing cylinder and is located near the other end of the water atomizer.

[0009] In one alternative embodiment, the water atomizer is provided with a feed inlet, which is located near one end of the water atomizer; the water atomizing device for producing nickel-iron alloy powder includes a conveying device for conveying the material flowing out of the slag outlet to the feed inlet.

[0010] In one alternative embodiment, the water atomizer is provided with a feed inlet, which is connected to the water atomizing cylinder and is located near one end of the water atomizer; the water atomizer is provided with a slag outlet, which is connected to the water atomizing cylinder and is located near the other end of the water atomizer; the water atomizer is also provided with a first switch door and a second switch door, the first switch door being used to open or close the slag outlet, and the second switch door being used to open or close the second opening.

[0011] In one optional embodiment, the water atomizing device for producing nickel-iron alloy powder further includes a liquid level regulating component. The liquid level regulating component is connected to the first and second switching doors. The liquid level regulating component includes a controller, a level gauge, and a U-shaped tube. The two ends of the U-shaped tube are spaced apart on the water atomizer, and the interior of the U-shaped tube communicates with the water atomizing cylinder. The level gauge is mounted on the U-shaped tube and connected to the controller. When the level gauge detects that the liquid level in the water atomizing cylinder is at the lower end of the U-shaped tube, the controller controls the first and second switching doors to be closed. When the level gauge detects that the liquid level in the water atomizing cylinder is at the upper end of the U-shaped tube, the controller controls the first and second switching doors to be open.

[0012] In one optional embodiment, the water atomizing device for producing nickel-iron alloy powder includes a flow regulating component that controls the flow rate of liquid exiting the outlet of the intermediate ladle. The liquid level regulating component further includes an alarm device connected to the flow regulating component. When the liquid level gauge detects that the liquid level inside the water atomizing cylinder is at the lower end of the U-shaped tube, the alarm device sounds an alarm, the controller controls the first and second switching doors to be closed, and the flow regulating component closes the outlet, stopping the pouring process.

[0013] In one alternative embodiment, the water atomizer includes a first barrel and a second barrel connected together. The first barrel is positioned close to the melt filter, the first opening is located on the first barrel, the water atomizing cone is at least partially located inside the second barrel, the second opening is located on the second barrel, and the internal diameter of the second barrel gradually decreases towards the second opening.

[0014] In one alternative embodiment, the water atomizing device for producing nickel-iron alloy powder includes a protective component with a fluid channel. The protective component is located between the melt inlet and the water atomizing disc. The inlet of the fluid channel is connected to the outlet of the melt inlet, and the outlet of the fluid channel is connected to the inlet of the water atomizing disc.

[0015] In one alternative embodiment, the water atomizing device for producing nickel-iron alloy powder includes a flow regulating component, which includes an regulating rod located at least partially within the intermediate jar. The regulating rod is capable of vertical movement, and one end of the regulating rod can be positioned near or away from the liquid outlet.

[0016] In one optional embodiment, the water atomization device for producing nickel-iron alloy powder further includes a molten ladle conveying device. This device conveys the molten ladle, and when the ladle reaches the end of its lifespan or a blockage occurs, the conveying device replaces the molten ladle.

[0017] In one optional embodiment, the water atomization device for producing nickel-iron alloy powder includes a moving component for moving the tundish horizontally. The moving component includes a moving track and a moving cart, the moving cart being mounted on the moving track and movable on the moving track, and the tundish being mounted on the moving cart. The molten nickel-iron produced by the smelting furnace is continuously injected into the molten melt ladle by the moving component, thereby achieving continuous water atomization.

[0018] In one alternative embodiment, a water cooling shroud is further provided inside the water atomizer, and the water cooling shroud is fitted over the outlet of the water atomizing disc.

[0019] The beneficial effects of the embodiments of the present invention are as follows: Unlike the prior art, the embodiments of the present invention are provided with a smelting furnace, a tundish, a melt auger, a water atomizer, and a water atomizing cone. The smelting furnace is used to melt nickel-iron alloy into molten nickel-iron. The tundish is located below the smelting furnace and is used to hold the molten nickel-iron. The tundish has an outlet. A molten metal drain is located below the tundish, opposite to the outlet. A water atomizer is located below the molten metal drain and includes a water atomizing cylinder and a first opening and a second opening connecting the cylinder. The first opening is located at one end of the water atomizer, and the second opening is located at the other end. A water atomizing disc is mounted on the water atomizer and installed at the first opening. The disc is partially located within the water atomizing cylinder and opposite to the outlet of the molten metal drain. A water atomizing cone is located within the water atomizing cylinder and is positioned near the second opening of the water atomizer. At least a portion of the material after being sieved by the water atomizing cone can flow out from the second opening. After the nickel-iron alloy is processed through a smelting furnace, tundish, and melt ladle, the nickel-iron alloy melt forms a powder-water mixture under the action of the water atomizing disc in the water atomizer. The water atomizing disc mainly uses high-pressure water to rapidly cool and break the nickel-iron melt into atomized powder. The mixture of atomized powder and water flows through the water atomizing cone and is sieved to obtain a target mixture of powder with a preset particle size. The target mixture flows out from the second opening, facilitating subsequent leaching processes. Compared to the pretreatment processes in the prior art, which easily result in irregularly shaped lumps, the processing process in this embodiment is less prone to irregular lumps. Furthermore, the target mixture of powder with a preset particle size obtained through the water atomizing cone facilitates subsequent leaching processes, resulting in a more complete reaction and improving the efficiency of the downstream synthesis process. This embodiment can achieve continuous water atomization of nickel-iron alloy raw materials, with low consumption of auxiliary materials and energy, and high production efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in specific embodiments of the present invention or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1This is a schematic diagram of the overall structure of the water atomization device for producing nickel-iron alloy powder according to an embodiment of the present invention;

[0022] Figure 2 This is a partial structural diagram of the water atomization device for producing nickel-iron alloy powder according to an embodiment of the present invention.

[0023] Figure 3 This is a partial structural diagram of the water atomization device for producing nickel-iron alloy powder according to an embodiment of the present invention, taken from another angle. Detailed Implementation

[0024] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0027] Please see Figure 1 A water atomization device 1000 for producing nickel-iron alloy powder includes a smelting furnace 10, an intermediate ladle 20, a melt strainer 30, a water atomizer 40, and a water atomizing cone 50. The smelting furnace 10 is used to melt the nickel-iron alloy into a nickel-iron molten substance. The intermediate ladle 20 is located below the smelting furnace 10 and is used to hold the nickel-iron molten substance. The melt strainer 30 is located below the intermediate ladle 20. The water atomizer 40 is located below the melt strainer 30, and the water atomizing cone 50 is located inside the water atomizer 40.

[0028] The water atomizing device 1000 for producing nickel-iron alloy powder further includes a liquid level regulating component 60, a protective component 70, a flow regulating component 80, a molten melt molten melt molten melt conveying device 90, a moving component 100, and a conveying device. The liquid level regulating component 60 is used to regulate the liquid level within the water atomizer 40. The protective component 70 is located between the molten melt molten melt molten melt 30 and the water atomizing disc 401. The flow regulating component 80 is partially disposed within the intermediate tundish 20 and can be used to regulate the outflow rate within the intermediate tundish 20. The molten melt molten melt conveying device 90 is used to convey the molten melt molten melt molten melt 30. The moving component 100 is used to move the intermediate tundish 20 horizontally. The conveying device is used to transport the slag separated from the water atomizer 40 to the feed inlet 402 of the water atomizer 40 for further sieving using the water atomizing cone 50. The following provides a detailed description of the smelting furnace 10, tundish 20, melt dripping ladle 30, water atomizer 40, water atomizing cone 50, liquid level regulating component 60, protective component 70, flow regulating component 80, dripping ladle conveying device 90, and moving component 100.

[0029] For the aforementioned smelting furnace 10, tundish 20, flow regulating component 80, and moving component 100, such as Figure 1 As shown, the smelting furnace 10 is used to melt nickel-iron alloy into nickel-iron molten material. The intermediate ladle 20 is located below the smelting furnace 10 and can be used to hold the nickel-iron molten material melted by the smelting furnace 10. The intermediate ladle 20 is provided with an outlet 201. The flow regulating component 80 is used to control the flow rate of the nickel-iron molten material flowing out of the outlet 201. The moving component 100 is used to drive the intermediate ladle 20 to move horizontally. Optionally, the moving component 100 includes a moving cart 1001 and a moving track 1002. The moving cart 1001 is mounted on the moving track 1002 and can move on the moving track 1002. The intermediate ladle 20 is mounted on the moving cart 1001. Optionally, the nickel-iron molten material smelted by the smelting furnace 10 can be continuously injected into the melt spout 30 by the moving component 100 driving the intermediate ladle 20, realizing continuous water atomization. Furthermore, when the intermediate package 20 needs to be replaced, the moving component 100 is used to move the intermediate package 20 to be replaced away from the current position, and the replacement is performed by moving the next set of moving components 100 to the current position.

[0030] Specifically, the flow regulation component 80 includes an regulating rod 801, at least partially located within the intermediate tundish 20. The regulating rod 801 can move vertically up and down, and one end of the regulating rod 801 can be positioned near or away from the outlet 201. Because the regulating rod 801 can move vertically up and down, when one end of the regulating rod 801 approaches the outlet 201 until it blocks the outlet 201, the distance between the regulating rod 801 and the outlet 201 gradually decreases until it reaches zero. At this time, the flow rate of molten nickel-iron from the outlet 201 gradually decreases until it stops. Conversely, when one end of the regulating rod 801 moves away from the outlet 201, the outlet 201 gradually opens, and the flow rate of molten nickel-iron from the outlet 201 gradually increases, thereby achieving regulation of the molten nickel-iron flow rate at the outlet 201. Optionally, one end of the adjusting rod 801 is arc-shaped, and an arc-shaped groove is provided at the corresponding liquid outlet 201 of the intermediate ladle 20. The arc-shaped groove is connected to the liquid outlet 201. When it is necessary to close the liquid outlet 201, one end of the arc-shaped adjusting rod 801 abuts against the arc-shaped groove, increasing the contact area between the two and preventing the nickel-iron molten metal from leaking out of the liquid outlet 201.

[0031] It should be noted that, to achieve vertical lifting and lowering of the adjusting rod 801, the adjusting rod 801 can be connected to a slider, which is mounted on a slide rail. The slider can slide on the slide rail, thereby driving the adjusting rod 801 to move vertically. It is understood that the method for achieving vertical lifting and lowering of the adjusting rod 801 is not limited to the above, and this application does not impose specific limitations.

[0032] Regarding the aforementioned melt dripping bag 30 and dripping bag conveying device 90, as Figure 1 As shown, the molten metal spout 30 is positioned below the intermediate ladle 20, and is opposite to the outlet 201. Molten nickel-iron flowing from the outlet 201 can flow into the molten metal spout 30. The spout conveying device 90 is used to transport the molten metal spout 30. When the molten metal spout 30 becomes clogged and needs replacement, the outlet 201 can be closed using the adjusting rod 801. Then, the spout is replaced using the spout conveying device 90. After replacement, the adjusting rod 801 is reopened to open the outlet 201, which is quite convenient. Optionally, the spout movement device is a transport vehicle.

[0033] Regarding the aforementioned water atomizer 40, protective component 70, and conveying device (not shown in the figure), such as Figure 1As shown, the water atomizer 40 is positioned below the melt filter 30, and the protective member 70 is located between the melt filter 30 and the water atomizing disc 401. The protective member 70 is used to prevent the melt filter 30 from contacting the water atomizing disc 401 on the water atomizer 40, thereby reducing damage to the water atomizing disc 401. The conveying device is used to transport the slag separated from the water atomizer 40 to the feed inlet 402 of the water atomizer 40 for further screening using the water atomizing cone 50, forming a cycle and reducing resource waste.

[0034] Specifically, the water atomizer 40 is provided with a water atomizing cylinder 40a and a first opening 40b and a second opening 40c connecting the water atomizing cylinder 40a. The first opening 40b is located at one end of the water atomizer 40, and the second opening 40c is located at the other end of the water atomizer 40. A water atomizing disc 401 is provided on the water atomizer 40, and the water atomizing disc 401 is installed in the first opening 40b. The water atomizing disc 401 is partially located inside the water atomizing cylinder 40a. The water atomizing disc 401 is positioned opposite to the outlet of the melt filter 30. The nickel-iron molten material in the melt filter 30 flows into the water atomizing disc 401. Under the action of high-pressure water on the water atomizing disc 401, the nickel-iron molten material is rapidly cooled and broken. The broken powder particles enter the water atomizing cylinder 40a and then flow through the water atomizing cone 50 for sieving. It should be noted that: one end of the water atomizer 40 refers to the end of the water atomizer 40 that is close to the liquid outlet 201, and the other end of the water atomizer 40 refers to the end of the water atomizer 40 that is away from the liquid outlet 201.

[0035] In some embodiments, the water atomizer 40 is provided with a feed inlet 402, which is located near one end of the water atomizer 40 and is used for feeding.

[0036] In some embodiments, the water atomizer 40 is provided with a slag outlet 403, which communicates with the water atomizing cylinder 40a and is located near the other end of the water atomizer 40. It should be noted that the water atomizing cone 50 in this application sieves the powder particles, typically obtaining fine particles. The mixture containing the fine particles flows out from the second opening 40c, while the larger particles flow out from the slag outlet 403. The specific particle size of the fine and large powder particles is not specifically limited in this application; users can set it according to actual needs. Optionally, a secondary filter is also provided at the slag outlet 403. The secondary filter can further sieve the slag flowing out of the slag outlet 403, removing large particles and separating the fine particles contained in the slag. The sieved fine particles are then transported to the feed inlet 402 using the aforementioned conveying device, thereby reducing resource waste.

[0037] In some embodiments, the slag outlet 403 is connected to one end of the conveying device, and the other end of the conveying device is connected to the feed inlet 402. The slag material flowing out through the slag outlet 403 is conveyed by the conveying device to the feed inlet 402 to achieve continuous screening.

[0038] In some embodiments, the water atomizer 40 is further provided with a first switch door (not shown) and a second switch door (not shown). The first switch door is used to open or close the slag outlet 403, and the second switch door is used to open or close the second opening 40c. The opening or closing status of the first and second switch doors can be set by the user according to actual needs. It is understood that, to facilitate better user control of the first and second switch doors, the first and second switch doors can be electrically controlled to open or close. The first and second switch doors can be installed on the water atomizer 40 by a rotating connection or a sliding connection; no specific limitation is made in this application.

[0039] In some embodiments, the water atomizer 40 includes a first barrel 41 and a second barrel 42, which are connected. The first barrel 41 is located near the melt filter 30. The first opening 40b is located on the first barrel 41. The water atomizing cone 50 is at least partially located inside the second barrel 42. The second opening 40c is located on the second barrel 42, and the internal diameter of the second barrel 42 gradually decreases towards the second opening 40c. With this configuration, the mixture processed by the water atomizing disc 401 flows through the first barrel 41 and the second barrel 42, and flows towards the water atomizing cone 50 under the guidance of the inclined sidewall of the second barrel 42, thereby improving the sieving efficiency of the water atomizing cone 50. It is understood that the first barrel 41 and the second barrel 42 can be integrally formed, or the first barrel 41 and the second barrel 42 can be detachably connected.

[0040] In some embodiments, the water atomizer 40 is further provided with a water cooling cover 404, which is fitted onto the outlet of the water atomizing disc 401. The water cooling cover 404 can cool the powder mixture flowing out of the water atomizing disc 401. Simultaneously, the low-pressure water flowing out of the water atomizing disc 401 forms a water curtain on the inner wall of the water cooling cover 404, which isolates air and prevents oxidation of the atomized solution droplets. Furthermore, the water cooling cover 404 can prevent the circulating liquid entering from the feed inlet 402 from directly contacting the atomized solution droplets, thus preventing accidents caused by excessive pressure.

[0041] In some embodiments, the protective member 70 is provided with a fluid channel 70a. The inlet of the fluid channel 70a is connected to the outlet of the melt spout 30, and the outlet of the fluid channel 70a is connected to the inlet of the water atomizing disc 401. The nickel-iron molten metal flowing out of the outlet of the melt spout 30 flows through the fluid channel 70a to the inlet of the water atomizing disc 401. The protective member 70 is used to prevent the water atomizing disc 401 from directly contacting the melt spout 30 and to prevent damage to the water atomizing disc 401, thereby protecting the water atomizing disc 401.

[0042] For the aforementioned liquid level regulating component 60, such as Figure 1 As shown, the liquid level regulating component 60 is disposed on the water atomizer 40. The liquid level regulating component 60 is used to regulate the liquid level in the water atomizer 40. The liquid level regulating component 60 is connected to the first switch door and the second switch door. The liquid level regulating component 60 can control the opening or closing of the first switch door and the second switch door.

[0043] Specifically, the liquid level regulating assembly 60 includes a controller (not shown), a liquid level gauge 601, and a U-shaped tube 602. The two ends of the U-shaped tube 602 are spaced apart on the water atomizer 40, and the interior of the U-shaped tube 602 communicates with the water atomizing cylinder 40a. The liquid level gauge 601 is mounted on the U-shaped tube 602 and connected to the controller. The end of the U-shaped tube 602 closest to the first opening 40b is defined as the upper liquid level end, and the end of the U-shaped tube 602 closest to the second opening 40c is defined as the lower liquid level end. When the level gauge 601 detects that the liquid level in the water atomizing cylinder 40a is at the lower end (i.e., the lower liquid level end) of the U-shaped tube 602, the controller controls the first and second switch doors to be closed. At this time, the slag outlet 403 is closed. When the level gauge 601 detects that the liquid level in the water atomizing cylinder 40a is at the upper end (i.e., the upper liquid level end) of the U-shaped tube 602, the controller controls the first and second switch doors to be open. At this time, the slag outlet 403 is open, which facilitates material discharge. This setting ensures that the liquid level in the water atomizer 40 is always at the standard liquid level, which is relatively safe.

[0044] The liquid level regulating component 60 also includes an alarm device connected to the flow regulating component. When the liquid level gauge 601 detects that the liquid level in the water atomizing cylinder 40a is at the lower end of the U-shaped tube 602, the alarm device sounds an alarm, the controller controls the first and second switch doors to be closed, and the flow regulating component 80 closes the liquid outlet 201 to stop pouring.

[0045] For the aforementioned water atomizing cone 50, such as Figure 1 As shown, the water atomizing cone 50 is disposed inside the water atomizing cylinder 40a. The water atomizing cone 50 is disposed near the second opening 40c of the water atomizer 40. At least a portion of the material after being screened by the water atomizing cone 50 can flow out from the second opening 40c.

[0046] Specifically, the water atomizing cone 50 includes a sieving column 501, one end of which is connected to the second opening 40c. The sieving column 501 is provided with a hollow cavity 501a and a plurality of sieving holes 501b communicating with the hollow cavity 501a. The plurality of sieving holes 501b are disposed on the outer surface of the sieving column 501. The hollow cavity 501a is connected to the second opening 40c. The powder mixture formed by the water atomizing disc 401 flows to the sieving column 501. Under the action of the sieving holes 501b, powder of the target particle size is sieved. The powder of the target particle size flows into the hollow cavity 501a along with the mixture. The mixture forms a vortex in the hollow cavity 501a, which has an adsorption force, adsorbing more powder of the target particle size into the hollow cavity 501a until it flows out from the second opening 40c. The specific size of the sieve hole 501b is not specifically limited in this application, and users can set it according to their actual needs.

[0047] The water atomizing cone 50 also includes a buffer cone 502, which is connected to the other end of the sieving column 501. The buffer cone 502 is arranged opposite to the water atomizing disc 401. The powder mixture formed by the water atomizing disc 401 flows toward the water atomizing cone 50. The powder mixture flows through the buffer cone 502 and then toward the sieving column 501. The buffer cone 502 can play a certain role in buffering and guiding. At the same time, larger particles in the powder mixture are deposited on the outside of the sieving column 501 due to their own gravity, while fine particles enter the hollow cavity 501a with the water flow.

[0048] In this embodiment of the invention, a smelting furnace 10, a tundish 20, a melt drain 30, a water atomizer 40, and a water atomizing cone 50 are provided. The smelting furnace 10 is used to melt nickel-iron alloy into nickel-iron molten material. The tundish 20 is located below the smelting furnace 10 and is used to hold the nickel-iron molten material. The tundish 20 is provided with an outlet 201. The melt drain 30 is located below the tundish 20 and is positioned opposite to the outlet 201. The water atomizer 40 is located below the melt drain 30 and includes a water atomizing cylinder 40a and a first opening 40 connecting the water atomizing cylinder 40a. b) and a second opening 40c, the first opening 40b is located at one end of the water atomizer 40, the second opening 40c is located at the other end of the water atomizer 40, a water atomizing disc 401 is provided on the water atomizer 40, the water atomizing disc 401 is installed in the first opening 40b, the water atomizing disc 401 is partially located inside the water atomizing cylinder 40a, the water atomizing disc 401 is arranged opposite to the outlet of the melt filter 30, and the water atomizing cone 50 is disposed inside the water atomizing cylinder 40a. The atomizer 40 is positioned near the second opening 40c of the water atomizer 40. At least a portion of the material after being screened by the water atomizing cone 50 can flow out from the second opening 40c. After the nickel-iron alloy is processed by the smelting furnace 10, tundish 20, and melt drain 30, the nickel-iron alloy melt is formed into a mixture of powder and water under the action of the water atomizing disc 401 in the water atomizer 40. The water atomizing disc 401 mainly uses high water pressure to rapidly cool and break the nickel-iron melt into atomized powder. The mixture of atomized powder and water flows through the water atomizer 40. The cone 50 sieves a target mixture of powder with a preset particle size, which flows out from the second opening 40c, facilitating subsequent leaching processing. Compared to existing pretreatment processes that easily result in irregularly shaped lumps, the processing in this embodiment is less prone to producing irregular lumps. Furthermore, the target mixture of powder with a preset particle size obtained through the water atomization cone 50 facilitates subsequent leaching, resulting in a more complete reaction, higher production efficiency, and lower consumption of auxiliary materials and energy, thus improving the efficiency of downstream synthesis processes. This embodiment enables continuous water atomization of nickel-iron alloy raw materials, with low consumption of auxiliary materials and energy and high production efficiency.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A water atomizing device for producing nickel-iron alloy powder, characterized in that, include: A smelting furnace (10) is used to melt nickel-iron alloy into nickel-iron melt; Intermediate ladle (20), the intermediate ladle (20) is located below the smelting furnace (10), the intermediate ladle (20) can be used to hold the nickel-iron melt, the intermediate ladle (20) is provided with a liquid outlet (201). A melt drain bag (30) is disposed below the intermediate ladle (20), and the melt drain bag (30) is disposed opposite to the liquid outlet (201); A water atomizer (40) is disposed below the melt filter (30). The water atomizer (40) is provided with a water atomizing cylinder (40a) and a first opening (40b) and a second opening (40c) communicating with the water atomizing cylinder (40a). The first opening (40b) is located at one end of the water atomizer (40), and the second opening (40c) is located at the other end of the water atomizer (40). A water atomizing disc (401) is disposed on the water atomizer (40). The water atomizing disc (401) is installed in the first opening (40b). The water atomizing disc (401) is partially located inside the water atomizing cylinder (40a). The water atomizing disc (401) is disposed opposite to the outlet of the melt filter (30). A water atomizing cone (50) is disposed inside the water atomizing cylinder (40a). The water atomizing cone (50) is disposed near the second opening (40c) of the water atomizer (40). At least a portion of the material after being screened by the water atomizing cone (50) can flow out from the second opening (40c). The water atomizing cone (50) includes a sieving column (501) and a buffer cone (502). One end of the sieving column (501) is connected to the second opening (40c). The sieving column (501) is provided with a hollow cavity (501a) and a plurality of sieving holes (501b) communicating with the hollow cavity (501a). The plurality of sieving holes (501b) are provided on the outer surface of the sieving column (501). The hollow cavity (501a) is communicating with the second opening (40c). The buffer cone (502) is connected to the other end of the sieving column (501). The outer periphery of the buffer cone (502) protrudes radially from the outer periphery of the sieving column (501). The buffer cone (502) is disposed opposite to the water atomizing disc (401).

2. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizer (40) is provided with a slag outlet (403), which is connected to the water atomizing cylinder (40a). The slag outlet (403) is located near the other end of the water atomizer (40).

3. The water atomizing device for producing nickel-iron alloy powder according to claim 2, characterized in that, The water atomizer (40) is provided with a feed inlet (402), and the feed inlet (402) is located at one end of the water atomizer (40); The water atomization device for producing nickel-iron alloy powder includes a conveying device, which is used to convey the material flowing out of the slag outlet (403) to the feed inlet (402).

4. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizer (40) is provided with a feed inlet (402), which is connected to the water atomizing cylinder (40a). The feed inlet (402) is located at one end of the water atomizer (40). The water atomizer (40) is provided with a slag outlet (403), which is connected to the water atomizing cylinder (40a). The slag outlet (403) is located near the other end of the water atomizer (40). The water atomizer (40) is also provided with a first switch door and a second switch door. The first switch door is used to open or close the slag outlet (403), and the second switch door is used to open or close the second opening (40c).

5. The water atomizing device for producing nickel-iron alloy powder according to claim 4, characterized in that, The water atomizing device for producing nickel-iron alloy powder further includes a liquid level regulating component (60), which is connected to the first switch door and the second switch door. The liquid level regulating component (60) includes a controller, a liquid level gauge (601), and a U-tube (602). The two ends of the U-tube (602) are spaced apart on the water atomizer (40), and the interior of the U-tube (602) is connected to the water atomizing cylinder (40a). The liquid level gauge (601) is installed on the U-tube (602) and is connected to the controller. When the level gauge (601) detects that the liquid level in the water atomizing cylinder (40a) is at the lower end of the U-tube (602), the controller controls the first switch door and the second switch door to be in the closed state. When the level gauge (601) detects that the liquid level in the water atomizing cylinder (40a) is at the upper end of the U-tube (602), the controller controls the first switch door and the second switch door to be in the open state.

6. The water atomizing device for producing nickel-iron alloy powder according to claim 5, characterized in that, The water atomizing device for producing nickel-iron alloy powder includes a flow regulating component (80), which can control the flow rate of liquid flowing out of the outlet (201) of the intermediate ladle (20). The liquid level regulating component (60) also includes an alarm device connected to the flow regulating component (80). When the liquid level gauge (601) detects that the liquid level in the water atomizing cylinder (40a) is at the lower end of the U-tube (602), the alarm device sounds an alarm, the controller controls the first and second switch doors to be closed, and the flow regulating component (80) closes the outlet (201) to stop pouring.

7. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizer (40) includes a first barrel (41) and a second barrel (42), the first barrel (41) and the second barrel (42) are connected, the first barrel (41) is located near the melt filter (30), the first opening (40b) is located on the first barrel (41), the water atomizing cone (50) is at least partially located inside the second barrel (42), the second opening (40c) is located on the second barrel (42), and the internal diameter of the second barrel (42) gradually decreases towards the second opening (40c).

8. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizing device for producing nickel-iron alloy powder includes a protective component (70), on which a fluid channel (70a) is provided. The protective component (70) is located between the melt inlet (30) and the water atomizing disc (401). The inlet of the fluid channel (70a) is connected to the outlet of the melt inlet (30), and the outlet of the fluid channel (70a) is connected to the inlet of the water atomizing disc (401).

9. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizing device for producing nickel-iron alloy powder includes a flow regulating component (80), which includes an regulating rod (801). The regulating rod (801) is at least partially located inside the intermediate jar (20). The regulating rod (801) can move up and down in the vertical direction. One end of the regulating rod (801) can be set close to or away from the liquid outlet (201).

10. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomization device for producing nickel-iron alloy powder also includes a molten foil conveying device (90), which is used to convey the molten foil (30). When the life of the foil reaches the end or a foil blockage occurs, the conveying device (90) replaces the molten foil (30).

11. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomization device for producing nickel-iron alloy powder includes a moving component (100), which is used to drive the intermediate jar (20) to move in the horizontal direction. The moving component (100) includes a moving track (1002) and a moving vehicle (1001). The moving vehicle (1001) is installed on the moving track (1002) and can move on the moving track (1002). The intermediate jar (20) is installed on the moving vehicle (1001). The nickel-iron melt smelted in the smelting furnace (10) can be continuously injected into the melt slurry (30) by the moving component (100) driving the intermediate ladle (20) to achieve continuous water atomization.

12. The water atomizing device for producing nickel-iron alloy powder according to claim 1, characterized in that, The water atomizer (40) is also provided with a water cooling cover (404), which is fitted onto the outlet of the water atomizing disc (401).

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