Preparation method of monodisperse rare earth oxide ultrafine powder

A rare earth oxide, monodisperse technology, applied in the preparation/processing of rare earth metal compounds, rare earth metal oxides/hydroxides, lanthanide oxides/hydroxides, etc., can solve the problem of crystal nucleus growth. Difficult to control conditions, high production cost, particle and particle adsorption and other problems, to achieve the effect of regular product morphology, less product pollution, and simple process
CN112174187AInactive Publication Date: 2021-01-05湖南威斯康新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南威斯康新材料科技有限公司
Publication Date
2021-01-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of monodisperse rare earth oxide ultrafine powder. The preparation method comprises the following steps: (1) adding rare earth oxide serving as a raw material into a mixing container, then adding deionized water into the mixing container, uniformly stirring the slurry, putting the mixed slurry into a sand mill for high-speed ball milling, and then discharging the slurry subjected to high-speed ball milling from the sand mill to obtain rare earth oxide slurry; (2) performing suction filtration on the rare earth oxide slurry prepared in the step (1)to obtain a rare earth oxide filter cake, putting the rare earth oxide filter cake into a vacuum drying oven for primary drying, and sieving the filter cake after drying for a certain time to obtain rare earth oxide powder; and (3) putting the rare earth oxide powder prepared in the step (2) into a blast drying oven for secondary drying. According to the preparation method, a physical method is adopted, hard agglomeration of the powder is avoided in a two-time drying mode, and the preparation method of the monodisperse rare earth oxide ultrafine powder is easy to operate, high in crystallinityand suitable for large-scale production.
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Description

technical field

[0001] The invention relates to the technical field of rare earth oxide powder preparation, in particular to a method for preparing ultrafine monodisperse rare earth oxide powder with simple operation and high crystallinity, which adopts a physical method and uses two drying methods to avoid hard agglomeration of powder. Background technique

[0002] Rare earth oxides show superior performance in aviation, aerospace, atomic energy, ceramics, magnetic materials, luminescent materials, and glass coloring applications. They are mainly used to manufacture magnetic materials for microwaves and single crystals of important materials for military industry. They can also be used to manufacture high-temperature heat-resistant materials. Alloys, aircraft nozzles, etc. Compared with conventional powders, rare earth oxide ultrafine powders have excellent physical and chemical properties, and have been widely used in high-tech materials, especially monodisperse rare earth ...

Claims

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