Micro-oxidation stripping equipment for preparing spherical molybdenum powder

Abstract

The utility model belongs to the technical field of powder metallurgy, and particularly relates to micro-oxidation stripping equipment for preparing spherical molybdenum powder, which comprises a main shell and a feed port arranged at the top of the main shell, and a micro-oxidation reaction cavity and an ammonia stripping reaction cavity communicated with each other are arranged in the main shell. And a hot disc micro-oxidation mechanism for micro-oxidizing molybdenum powder is arranged in the micro-oxidation reaction cavity. According to the utility model, a micro-oxidation mode of rotating the micro-oxidation turntable is adopted, and the turntable not only ensures the overall uniformity of powder micro-oxidation and ensures that each corner angle of irregular molybdenum powder is uniformly oxidized, but also improves the dispersity of the powder, solves the problem that the powder is easy to agglomerate in the micro-oxidation process, and improves the quality of the molybdenum powder. The sphericity and fluidity of the finally obtained spherical molybdenum powder are enhanced, meanwhile, the continuity of the micro-oxidation process is guaranteed, the whole process is efficient and simple, and large-batch production and processing are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a micro-oxidation stripping device for preparing spherical molybdenum powder. Background Art

[0002] Molybdenum is a strategically important refractory rare metal, characterized by high-temperature strength and hardness, a high melting point, excellent electrical and thermal conductivity, a low coefficient of expansion, and excellent thermal shock and fatigue resistance. Spherical molybdenum powder, with its high fluidity and bulk density, is widely used in 3D printing, thermal spraying, cladding, contact material preparation, and powder metallurgy. Spherical molybdenum powder can be prepared using methods such as the rotating electrode method, spray granulation, and plasma spheroidization. The plasma spheroidization and rotating electrode methods require complex equipment and high energy consumption, while spherical molybdenum powders produced using methods such as spray granulation suffer from disadvantages such as high oxygen content, large powder size, and a wide particle size distribution. With technological advancements, spherical molybdenum powder must meet even better requirements for high sphericity, purity, fluidity, high tap density, high dispersibility, low energy consumption, and low cost. Therefore, the search for optimized equipment and methods for producing spherical molybdenum powder is imperative. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the main purpose of the utility model is to provide a micro-oxidation stripping device for preparing spherical molybdenum powder.

[0004] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0005] A micro-oxidation stripping device for preparing spherical molybdenum powder, comprising:

[0006] The main shell has a feed port arranged on the top of the main shell. The main shell is provided with a micro-oxidation reaction chamber and an ammonia stripping reaction chamber that are interconnected. The micro-oxidation reaction chamber is provided with a hot disk micro-oxidation mechanism that causes molybdenum powder to be micro-oxidized.

[0007] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the present invention, the micro-oxidation reaction chamber also includes a dispersion chamber located in the middle, a vibrating screen arranged above the dispersion chamber, and a hot plate micro-oxidation mechanism is arranged at the bottom of the dispersion chamber.

[0008] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the utility model, the hot disk micro-oxidation mechanism is a rotatable micro-oxidation turntable.

[0009] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the utility model, a controllable heating device is provided at the lower part of the rotatable micro-oxidation turntable.

[0010] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the present invention, the ammonia stripping reaction chamber includes a filter screen located in the middle and an ammonia solution pool arranged below the filter screen.

[0011] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the utility model, the filter screen can be moved up and down by a mechanical lifting platform.

[0012] As a preferred solution of the micro-oxidation stripping equipment for preparing spherical molybdenum powder described in the present invention, the filter screen can be disassembled and replaced.

[0013] The beneficial effects of the utility model are as follows:

[0014] The present invention provides a micro-oxidation stripping device for preparing spherical molybdenum powder, comprising a main housing, a feed port disposed at the top of the main housing, a micro-oxidation reaction chamber and an ammonia stripping reaction chamber interconnected within the main housing, and a hot-disk micro-oxidation mechanism disposed within the micro-oxidation reaction chamber for micro-oxidizing the molybdenum powder. The present invention utilizes a micro-oxidation method utilizing a rotating micro-oxidation turntable. The rotating turntable not only ensures the overall uniformity of powder micro-oxidation, ensuring uniform oxidation of every corner of the irregular molybdenum powder, but also improves the dispersion of the powder, resolving the problem of powder agglomeration during the micro-oxidation process, enhancing the sphericity and fluidity of the resulting spherical molybdenum powder, and ensuring the continuity of the micro-oxidation process. The entire process is efficient and simple, facilitating large-scale production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model equipment.

[0017] In the figure, 1-feeding port, 2-dispersion chamber, 3-rotatable micro-oxidation turntable, 4-filter screen, 5-mechanical lifting platform, 6-vibrating screen, 7-controllable heating device, 8-ammonia solution tank.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be a clear and complete description of the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a micro-oxidation exfoliation device for preparing spherical molybdenum powder comprises:

[0021] The main shell has a feed port 1 arranged on the top of the main shell. The main shell is provided with a micro-oxidation reaction chamber and an ammonia stripping reaction chamber that are interconnected. The micro-oxidation reaction chamber is provided with a hot disk micro-oxidation mechanism for micro-oxidation of molybdenum powder.

[0022] In one embodiment, the micro-oxidation reaction chamber further includes a dispersion chamber 2 located in the middle, a vibrating screen 6 arranged above the dispersion chamber 2, and a hot plate micro-oxidation mechanism is arranged at the lower part of the dispersion chamber 2.

[0023] In one embodiment, the hot disk micro-oxidation mechanism is a rotatable micro-oxidation turntable 3 .

[0024] In one embodiment, a controllable heating device 7 is provided at the lower portion of the rotatable micro-oxidation turntable 3 .

[0025] In one embodiment, the ammonia stripping reaction chamber includes a filter screen 4 located in the middle and an ammonia solution pool 8 disposed below the filter screen 4 .

[0026] In one embodiment, the filter screen 4 can be moved up and down by a mechanical lifting platform 5 .

[0027] In one embodiment, the filter screen 4 is removable and replaceable.

[0028] When the micro-oxidation stripping device for preparing spherical molybdenum powder described in the present invention is used, irregularly shaped raw molybdenum powder is poured into the micro-oxidation reaction chamber through the feed port 1, passes through the vibrating screen 6, and falls onto the rotatable micro-oxidation turntable 3 at the lower part of the dispersion chamber 2. The controllable heating device 7 heats the raw molybdenum powder to achieve micro-oxidation treatment. After being rotated out by the rotatable micro-oxidation turntable 3, it falls into the filter screen 4 and is driven down by the mechanical lifting platform 5. The micro-oxidized molybdenum powder is stripped of ammonia in the ammonia solution pool 8. Finally, the mechanical lifting platform 5 is driven up, the filter screen 4 is taken out, and the spherical molybdenum powder is collected after cleaning and drying.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A micro-oxidation stripping device for preparing spherical molybdenum powder, characterized in that: include: A main shell and a feed port (1) are arranged on the top of the main shell. A micro-oxidation reaction chamber and an ammonia stripping reaction chamber that are interconnected are arranged in the main shell. A hot disk micro-oxidation mechanism for micro-oxidizing molybdenum powder is arranged in the micro-oxidation reaction chamber.

2. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 1, characterized in that: The micro-oxidation reaction chamber further comprises a dispersion chamber (2) located in the middle, a vibrating screen (6) arranged above the dispersion chamber (2), and a hot plate micro-oxidation mechanism is arranged at the lower part of the dispersion chamber (2).

3. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 1, characterized in that: The hot disk micro-oxidation mechanism is a rotatable micro-oxidation turntable (3).

4. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 3, characterized in that: A controllable heating device (7) is provided at the lower part of the rotatable micro-oxidation turntable (3).

5. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 1, characterized in that: The ammonia stripping reaction chamber comprises a filter screen (4) located in the middle and an ammonia solution pool (8) arranged below the filter screen (4).

6. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 5, characterized in that: The filter screen (4) can be moved up and down by a mechanical lifting platform (5).

7. The micro-oxidation stripping device for preparing spherical molybdenum powder according to claim 5, characterized in that: The filter screen (4) can be disassembled and replaced.

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