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Method and device for manufacturing non-glomeration nano-oxide powder body

A technology for preparing nano-oxides and devices, applied in the direction of oxide/hydroxide preparation, chemical instruments and methods, inorganic chemistry, etc., can solve difficulties, hard agglomeration and other problems, achieve low cost, overcome hard agglomeration, and device structure reasonable effect

Inactive Publication Date: 2008-07-16
SHANGHAI UNIV
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Problems solved by technology

Its main disadvantage is that if the explosive RDX outside the nanoreactor is not cleaned (in fact, it is more difficult), hard agglomerated powder is likely to be obtained after the explosion, and the obtained solid solution nanopowder needs heat treatment to remove the residual components of the explosion

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  • Method and device for manufacturing non-glomeration nano-oxide powder body
  • Method and device for manufacturing non-glomeration nano-oxide powder body

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Embodiment Construction

[0029] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0030] Referring to Figure 4 and Figure 1, the preparation method of the non-agglomerated nano-oxide powder, the detailed process is as follows:

[0031] The electrospray-nano-flame method uses common inorganic salts as raw materials, and does not require complex chemical processes such as the preparation of sols. It has the advantages of simplicity and wide application range. By changing the solute ratio, powders with corresponding chemical compositions can be obtained; by changing the solute concentration and electrospray process parameters, the particle size of the prepared oxide powder can be adjusted. In addition, the powder output can be increased by adopting the array method.

[0032] The process of using this method to prepare ZnO nanopowder in this embodiment is described as follows, see Figure 5,

[0033] 1. Prepare Zn(NO 3 ) 2 ethanol soluti...

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Abstract

The invention relates to a method and a device for preparing nanometer oxide powders without agglomeration. The method combines an electron spraying and a combustion method, separates nanometer particles by charging the surfaces of aerosol particles which are generated during nanometer combustion with the same charge, and overcomes hard agglomeration existing in the combustion method. The preparation device comprises a combustor, a liquid pump, a bracket and a collecting board; an outlet of the liquid pump is connected with an electronic sprayer through a tube; a nozzle of the electronic sprayer aims at an inlet of the combustor, and an outlet of the combustor aims at the collecting board. The method and device of the invention can prepare and obtain the nanometer oxide powders without hard agglomeration.

Description

technical field [0001] The invention relates to a method and device for preparing a non-agglomerated nanometer oxide powder. Background technique [0002] At present, some methods for preparing nano-oxide powders, such as precipitation method, sol-gel method, combustion method, hydrothermal method, ultrasonic atomization pyrolysis, microwave-assisted pyrolysis, inverse emulsion method, spray pyrolysis method, etc., Has not been able to solve the problem of hard reunion very well. In addition, the preparation of nano-oxide solid solution powders without hard agglomeration is a more difficult task. [0003] To avoid the formation of hard agglomerates, Xia et al. proposed pyrolysis of salt-added aerosols. The formation of hard agglomerates is avoided due to the precipitation of the salt to wrap the generated nanoparticles. When Shen et al. prepared nano-ZnO by pyrolysis, the salt was directly mixed into the powder raw material before pyrolysis, which reduced the formation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/14C01G9/02C01G3/02C01F17/00
Inventor 李建林张攀易熙
Owner SHANGHAI UNIV
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