Structure for accelerating precipitation of metal powder on atomization equipment

Abstract

The utility model discloses atomization equipment for preparing metal powder. A coil capable of being powered on and powered off is arranged on the periphery of the atomization equipment. The method comprises the steps that molten metal liquid enters atomization equipment to form metal powder, the metal powder is mixed with a medium, accelerated movement is conducted under the action of a magnetic field, and the metal powder is discharged from the discharging end of the atomization equipment; according to the utility model, metal powder and atomized water in high-temperature molten alloy powder slurry are rapidly analyzed, the alloy powder is precipitated during production atomization, meanwhile, the contact time of the alloy powder and the atomized water is shortened, and the oxygen content of an alloy powder product is reduced, so that the production efficiency and quality of the product are improved, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder, in particular to a structure for accelerating the precipitation of metal powder on atomizing equipment. Background Art

[0002] With the increasing market demand for metal powder and customer product upgrades, the performance requirements for metal powder products are becoming increasingly higher, and higher requirements are also being placed on powder production efficiency. Metal powder is generally produced through a melting and atomization process, and reducing contact with oxygen has a significant impact on product performance.

[0003] Melting and casting are widely used in current industrial production. The principle is to add solid metal raw materials into the medium frequency furnace in a certain proportion, then melt them into liquid metal and tilt the medium frequency furnace. The tilting speed is slowly controlled to control the flow rate of the liquid into the tundish, and then it is atomized by high-pressure water or gas cutting to make powder.

[0004] In the production process after atomization, the metal powder is in direct contact with the atomized water over a large area and for a long time. The ultrafine powder produced each time settles slowly in the slurry, resulting in incomplete recovery of the ultrafine powder and affecting the particle size distribution of the product. At the same time, the longer the contact time between the powder and the atomized water, the more oxygen is introduced, causing the oxygen content to exceed the standard and affecting performance.

[0005] Existing technology, such as publication number CN213135050U, describes an atomization device for preparing copper alloy powder. This device continuously collects copper alloy powder and utilizes a distributor within the dryer to improve dryer efficiency and speed up drying. However, the issue of metal powder remaining during the atomization process remains unresolved. Utility Model Content

[0006] The purpose of the utility model is to provide a structure for accelerating the precipitation of metal powder on an atomizing device. This solves the problem in the prior art that the metal powder is in direct contact with the atomized water over a large area and for a long time. This causes the ultrafine powder produced each time to settle slowly in the slurry, resulting in incomplete ultrafine powder recovery and affecting the particle size distribution of the product. Furthermore, the longer the contact time between the powder and the atomized water, the more oxygen is introduced, causing the oxygen content to exceed the standard and affecting performance. The utility model is achieved by providing a structure for accelerating the precipitation of metal powder on an atomizing device, wherein the atomizing device is provided with a coil that can be turned on and off on its periphery.

[0007] The metal powder is in direct contact with the water in the atomizing equipment. The existing technology is to allow the metal powder to precipitate in the slurry under the gravity of the metal powder itself. The precipitation efficiency is low and the powder recovery rate is also low. It will also cause the oxygen content of the powder to exceed the standard, affecting the performance. Based on this technical problem, the utility model sets a coil on the periphery of the atomizing equipment, and guides the movement of the metal powder by energizing the coil. Compared with the existing technology in which the metal powder precipitates by its own gravity, the atomizing equipment of the utility model can effectively accelerate the precipitation of the metal powder and avoid the problems in the existing technology.

[0008] A further technical solution of the present invention is: the coil includes a traveling wave coil and / or a spiral coil, the traveling wave coil can be used to accelerate the movement of metal powder along the inner wall of the atomization device, and the spiral coil can be used to adsorb the metal powder on the inner wall of the atomization device.

[0009] A traveling wave coil is installed on the periphery of the atomizer, causing the metal powder to move downward along the inner wall of the atomizer. The spiral coil serves to adsorb the metal powder to the inner wall of the atomizer. When the spiral coil is de-energized, the metal powder falls and is discharged. Because the coil is installed on the periphery of the atomizer, the metal powder moves along the inner wall of the atomizer, reducing the contact area between the metal powder and the medium, further ensuring the performance of the metal powder.

[0010] A further technical solution of the present invention is: the atomizing device includes a conical portion and a cylindrical portion connected to the conical end of the conical portion, the traveling wave coil is placed on the outer periphery of the conical portion, and the spiral coil is placed on the outer periphery of the cylindrical portion.

[0011] The cylindrical part of the atomizing equipment is the discharge end of the atomizing equipment, and the metal powder first enters the conical part and then enters the cylindrical part; the cylindrical part is connected to the conical end of the conical part, so the diameter of the cylindrical part is less than or equal to the minimum diameter of the conical part, and the horizontal cross-sectional area of the conical part is larger than the horizontal cross-sectional area of the cylindrical part. The magnetic field has a greater effect on the metal powder in the cylindrical part than in the conical part. Considering that the cost of the traveling wave coil is greater than that of the spiral coil, and in order to ensure the acceleration effect of the metal powder, a traveling wave coil is provided in the conical part and a spiral coil is provided in the cylindrical part.

[0012] A further technical solution of the present invention is: the cylindrical portion is used to be connected to a collecting device, and the collecting device is provided with a spiral coil.

[0013] The cylindrical part of the atomizing equipment is the discharge end. After the metal powder comes out of the cylindrical part, it enters the collecting equipment for collection. In order to ensure the collection speed, a spiral coil is provided on the periphery of the collecting equipment to accelerate the movement of the metal powder.

[0014] A further technical solution of the present invention is that the coil is arranged along the discharge direction of the metal powder.

[0015] The coil is arranged along the discharge direction of the metal powder to guide the metal powder to move along the discharge direction and accelerate the discharge of the metal powder.

[0016] The utility model also provides a method for preparing metal powder, wherein molten metal liquid enters an atomizing device to form metal powder, the metal powder is mixed with a medium, and is accelerated under the action of a magnetic field, and the metal powder is discharged from a discharge end of the atomizing device.

[0017] As the high-pressure pump starts, the molten metal liquid enters the atomization chamber, and the broken metal powder mixes with water. Under the action of the magnetic field, the speed of the metal powder moving downward is accelerated, thereby reducing the mixing of metal powder and water.

[0018] A further technical solution of the present invention is: the magnetic field includes a traveling wave magnetic field and / or a spiral tube magnetic field, the traveling wave magnetic field is used to accelerate the movement of metal powder along the inner wall of the atomization device, and the spiral tube magnetic field is used to adsorb the metal powder on the inner wall of the atomization device.

[0019] In addition to accelerating the movement of metal powder, the magnetic field also causes the metal powder to move along the inner wall or / and be adsorbed on the inner wall of the atomization equipment, thereby reducing the contact area between the metal powder and the water medium, reducing the oxygen content of the metal powder, and ensuring the performance of the metal powder.

[0020] The beneficial effects of the present invention are as follows: the metal powder is in direct contact with the water in the atomizing equipment. The prior art is to allow the metal powder to precipitate in the slurry under the gravity of the metal powder itself. The precipitation efficiency is low and the powder recovery rate is also low. It will also cause the oxygen content of the powder to exceed the standard, affecting the performance. Based on this technical problem, the present invention sets a coil on the periphery of the atomizing equipment, and guides the movement of the metal powder by energizing the coil. Compared with the prior art in which the metal powder precipitates by its own gravity, the atomizing equipment of the present invention can effectively accelerate the precipitation of the metal powder and avoid the problems in the prior art.

[0021] The utility model realizes rapid analysis of metal powder and atomized water in high-temperature molten alloy powder slurry, and the alloy powder is precipitated during production atomization. At the same time, the contact time between the alloy powder and the atomized water is reduced, and the oxygen content of the alloy powder product is reduced, thereby improving the production efficiency and quality of the product and improving the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional view of a structure for accelerating the precipitation of metal powder on an atomizing device provided by the utility model;

[0023] Figure 2 This is an enlarged view of point A provided by the present utility model;

[0024] Figure 3 It is an enlarged view of point B provided by the present invention.

[0025] Reference numerals: 1. atomizing device, 11. conical portion, 12. cylindrical portion,

[0026] 2. Coil, 21. Traveling wave coil, 22. Spiral coil,

[0027] 3. Collect equipment. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0030] Example 1:

[0031] Figure 1-3 A structure for accelerating the precipitation of metal powder on an atomizing device is shown. The outer periphery of the atomizing device 1 is provided with a coil 2 that can be switched on and off.

[0032] The metal powder is in direct contact with the water in the atomizing equipment. The existing technology is to allow the metal powder to precipitate in the slurry under the gravity of the metal powder itself. The precipitation efficiency is low and the powder recovery rate is also low. It will also cause the oxygen content of the powder to exceed the standard, affecting the performance. Based on this technical problem, the utility model sets a coil on the periphery of the atomizing equipment, and guides the movement of the metal powder by energizing the coil. Compared with the existing technology in which the metal powder precipitates by its own gravity, the atomizing equipment of the utility model can effectively accelerate the precipitation of the metal powder and avoid the problems in the existing technology.

[0033] In this embodiment, the coil 2 includes a traveling wave coil 21 and / or a spiral coil 22 . The traveling wave coil 21 can be used to accelerate the movement of metal powder along the inner wall of the atomizing device 1 , and the spiral coil 22 can be used to adsorb the metal powder on the inner wall of the atomizing device 1 .

[0034] A traveling wave coil is installed on the periphery of the atomizer, causing the metal powder to move downward along the inner wall of the atomizer. The spiral coil serves to adsorb the metal powder to the inner wall of the atomizer. When the spiral coil is de-energized, the metal powder falls and is discharged. Because the coil is installed on the periphery of the atomizer, the metal powder moves along the inner wall of the atomizer, reducing the contact area between the metal powder and the medium, further ensuring the performance of the metal powder.

[0035] In this embodiment, the atomizing device 1 includes a conical portion 11 and a cylindrical portion 12 connected to the conical end of the conical portion 11 . The traveling wave coil 21 is placed on the outer periphery of the conical portion 11 , and the spiral coil 22 is placed on the outer periphery of the cylindrical portion 12 .

[0036] The cylindrical part of the atomizing equipment is the discharge end of the atomizing equipment, and the metal powder first enters the conical part and then enters the cylindrical part; the cylindrical part is connected to the conical end of the conical part, so the diameter of the cylindrical part is less than or equal to the minimum diameter of the conical part, and the horizontal cross-sectional area of the conical part is larger than the horizontal cross-sectional area of the cylindrical part. The magnetic field has a greater effect on the metal powder in the cylindrical part than in the conical part. Considering that the cost of the traveling wave coil is greater than that of the spiral coil, and in order to ensure the acceleration effect of the metal powder, a traveling wave coil is provided in the conical part and a spiral coil is provided in the cylindrical part.

[0037] In this embodiment, the cylindrical portion 12 is used to connect to the collecting device 3 , and the collecting device 3 is provided with a spiral coil 22 .

[0038] The cylindrical part of the atomizing equipment is the discharge end. After the metal powder comes out of the cylindrical part, it enters the collecting equipment for collection. In order to ensure the collection speed, a spiral coil is provided on the periphery of the collecting equipment to accelerate the movement of the metal powder.

[0039] In this embodiment, the cylindrical portion is detachably connected to the collecting device.

[0040] In this embodiment, the coil 2 is arranged along the metal powder discharging direction.

[0041] The coil is arranged along the discharge direction of the metal powder to guide the metal powder to move along the discharge direction and accelerate the discharge of the metal powder.

[0042] Example 2:

[0043] A method for preparing metal powder, wherein molten metal liquid enters an atomizing device to form metal powder, the metal powder is mixed with a medium, accelerated under the action of a magnetic field, and discharged from a discharge end of the atomizing device.

[0044] As the high-pressure pump starts, the molten metal liquid enters the atomization chamber, and the broken metal powder mixes with water. Under the action of the magnetic field, the speed of the metal powder moving downward is accelerated, thereby reducing the mixing of metal powder and water.

[0045] In this embodiment, the magnetic field includes a traveling wave magnetic field and / or a solenoid magnetic field. The traveling wave magnetic field is used to accelerate the movement of metal powder along the inner wall of the atomizing device, and the solenoid magnetic field is used to adsorb the metal powder on the inner wall of the atomizing device.

[0046] In addition to accelerating the movement of metal powder, the magnetic field also causes the metal powder to move along the inner wall or / and be adsorbed on the inner wall of the atomization equipment, thereby reducing the contact area between the metal powder and the water medium, reducing the oxygen content of the metal powder, and ensuring the performance of the metal powder.

[0047] The working principle of this utility model is as follows: After production begins, with the activation of the high-pressure pump, molten metal liquid enters the atomization chamber. The crushed metal powder mixes with water and falls into the atomization tower. At this time, the traveling wave coil and the spiral coil are both energized, and the traveling wave coil generates a traveling wave magnetic field. The alloy powder, which is mainly iron, is affected by the traveling wave magnetic field and moves from the top of the atomization tower cone to the bottom. The powder reaches the spiral tube magnetic field and is attracted by the spiral tube magnetic field and precipitated in the powder collection device. Atomization is completed, all coils are de-energized, and the powder collection device can be removed. The technology of this utility model shortens the original metal powder production time interval from 1 hour to 20 minutes; the oxygen content is reduced from 2300ppm to 1300ppm; and the crucible life is increased by 60 to more than 70 heats, with significant economic benefits.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A structure for accelerating the precipitation of metal powder on an atomizing device, characterized in that: A coil (2) that can be turned on and off is provided on the periphery of the atomizing device (1), and the coil (2) is extended along the metal powder discharge direction; the coil (2) includes a traveling wave coil (21) and / or a spiral coil (22), the traveling wave coil (21) can be used to accelerate the movement of the metal powder along the inner wall of the atomizing device (1), and the spiral coil (22) can be used to adsorb the metal powder on the inner wall of the atomizing device (1).

2. The structure for accelerating metal powder precipitation on an atomizing device according to claim 1, characterized in that: The atomizing device (1) comprises a conical portion (11) and a cylindrical portion (12) connected to the conical end of the conical portion (11); the traveling wave coil (21) is placed on the outer periphery of the conical portion (11); and the spiral coil (22) is placed on the outer periphery of the cylindrical portion (12).

3. The structure for accelerating metal powder precipitation on an atomizing device according to claim 2, characterized in that: The cylindrical portion (12) is used to be connected to a collecting device (3), and a spiral coil (22) is provided on the collecting device (3).

4. The structure for accelerating metal powder precipitation on an atomizing device according to claim 1, characterized in that: The coil (2) is arranged along the metal powder discharging direction.

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