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Separation and recovery device and method of micro-nano composite powder and its application

A micro-nano composite, separation and recovery technology, applied in solid separation, chemical instruments and methods, wet separation, etc., can solve the problems affecting the fluidity, bulk density, and high energy consumption of spherical powders, and achieve mass production. , Improve the fluid linear velocity, the effect of high ultrasonic utilization rate

Active Publication Date: 2020-05-08
GUANGDONG INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the high temperature of the plasma, partial gasification will occur during the powder spheroidization process, and the steam will condense to form nano-powders (1-500nm) that adhere to the micron spherical powder during the subsequent powder collection process. Part of the nano-powder accounts for about 2-5wt% of the mass fraction of the final product, and its existence will seriously affect the fluidity, bulk density and other properties of the spherical powder
The current method has the problem of high energy consumption and is not suitable for powders with insoluble nanopowders adhered to the surface

Method used

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  • Separation and recovery device and method of micro-nano composite powder and its application
  • Separation and recovery device and method of micro-nano composite powder and its application

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Effect test

Embodiment 1

[0059] This embodiment provides a method for separating and recovering micro-nano composite powder, which uses the separation and recovery device for micro-nano composite powder provided by the present invention for separation and recovery. mainly includes:

[0060] Raw material: spherical tungsten powder produced by plasma spheroidization technology, average particle size (D 50 ) Is 26μm.

[0061] Parameter setting: the inclination angle of the side wall of the fluidized bed is 10 degrees, the opening rate of the distribution plate is 1%, and the pore size of the filter screen is 1000 mesh.

[0062] Put 20kg spherical tungsten powder in the fluidized bed, turn on the water pump, make the water in the liquid storage device enter from the inlet of the fluidized bed, adjust the flow regulator so that the water flow rate is 2L / min, make the spherical tungsten powder in Fluidized state.

[0063] Place the ultrasonic vibrating rod and the water detection probe in the water in the fluidize...

Embodiment 2

[0067] This embodiment provides a method for separating and recovering micro-nano composite powder, which uses the separation and recovery device for micro-nano composite powder provided by the present invention for separation and recovery. mainly includes:

[0068] Raw material: spherical chromium powder produced by plasma spheroidization technology, average particle size (D 50 ) Is 16μm.

[0069] Parameter setting: the inclination angle of the side wall of the fluidized bed is 5 degrees, the opening rate of the distribution plate is 1.5%, and the pore size of the filter screen is 1500 mesh.

[0070] Put 1kg of spherical chromium powder in the fluidized bed, turn on the water pump, make the water in the liquid storage device enter from the inlet of the fluidized bed, adjust the flow regulator to make the water flow rate 0.5L / min, make the spherical chromium powder In a fluidized state.

[0071] Place the ultrasonic vibrating rod and the water detection probe in the water in the flui...

Embodiment 3

[0075] This embodiment provides a method for separating and recovering micro-nano composite powder, which uses the separation and recovery device for micro-nano composite powder provided by the present invention for separation and recovery. mainly includes:

[0076] Raw material: spherical Ti alloy powder produced by plasma spheroidization technology, average particle size (D 50 ) Is 30μm.

[0077] Parameter setting: the inclination angle of the side wall of the fluidized bed is 30 degrees, the opening rate of the distribution plate is 0.1%, and the pore size of the filter screen is 500 mesh.

[0078] Put 20kg spherical Ti alloy powder in the fluidized bed, turn on the water pump, make the water in the liquid storage device enter from the inlet of the fluidized bed, adjust the flow regulator so that the water flow rate is 1.5L / min, so that the spherical Ti The alloy powder is in a fluidized state.

[0079] Place the ultrasonic vibrating rod and the water detection probe in the water ...

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Abstract

The invention provides a separation and recovery device and method of micro and nano composite powder, and an application of the separation and recovery device, and relates to the technical field of plasma spheroidization milling. The separation and recovery device of the micro and nano composite powder comprises a fluidized bed, a nanofilter and an ultrasonic vibration assembly; a liquid inlet isformed in the bottom of the fluidized bed; a liquid outlet is formed in the top of the fluidized bed; a filter screen is arranged in the fluidized bed and is arranged below the liquid outlet; the nanofilter communicates with the liquid outlet and is used for filtering liquid flowing out of the fluidized bed; and the ultrasonic vibration assembly is configured to perform ultrasonic vibration on the liquid in the fluidized bed. The separation and recovery device is simple in structure and can fluidize the micro and nano composite powder so as to achieve efficient separation of micro powder andnano powder. The separation and recovery method of the micro and nano composite powder adopts the separation and recovery device of the micro and nano composite powder for separation and recovery. Theseparation and recovery method is simple to operate and high in controllability and can achieve batch separation and recovery.

Description

Technical field [0001] The invention relates to the technical field of plasma spheroidizing powder production, and particularly relates to a separation and recovery device and method for micro-nano composite powder and its application. Background technique [0002] Plasma spheroidization technology is to pass irregularly shaped micron-sized powder (20-300μm) through a high-temperature plasma torch from a carrier gas, and the particles are rapidly heated and melted. The molten particles form droplets with high sphericity under the action of surface tension, and solidify rapidly in a very short time, thereby obtaining high-quality spherical micron powder. At present, this technology can be used to prepare hundreds of spherical powders such as metals and composite metals, oxides, nitrides, etc. Its products are obtained in the fields of powder injection molding technology, gel injection molding technology, 3D printing rapid prototyping, thermal spraying, etc. It is widely used. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 雷超毛新华李克峰王健刘辛
Owner GUANGDONG INST OF NEW MATERIALS
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