Preparation method for highly-dispersed fine lanthanum oxide slurry

Abstract

The invention relates to a preparation method for a highly-dispersed fine lanthanum oxide slurry. According to the slurry, marketized fine lanthanum oxide powder is adopted as a raw material, water is adopted as a solvent, the weight of the required lanthanum oxide is firstly calculated according to the mass fraction of the fine lanthanum oxide in the slurry; then the required lanthanum oxide is weighed, and placed in a ball mill pot; the balance of the water is added to the pot; a uniform stirring treatment is performed by a glass rod; the required large milling balls and the required small milling balls are weighed according to the milling ball and material ratio of 3:1-5:1 and the large milling ball and small milling ball ratio of 0:1-1:1; the large milling balls and the required smallmilling balls are added to the ball mill pot; the large milling balls, the required small milling balls and the slurry are uniformly mixed by the glass rod; finally the ball mill pot is installed on a ball mill to obtain the highly-dispersed fine lanthanum oxide slurry, wherein the rotation speed of the ball mill is 350-500 r / min, the ball milling time is 60-90 minutes. With the present invention, the highly-dispersed fine lanthanum oxide slurry is prepared in the water solvent, the economy is good, the process is simple, the treatment time is short, and the continuous batch production can beachieved.

Description

technical field [0001] The invention relates to a preparation method of a rare earth metal slurry, in particular to a preparation method of a high-performance coating material lanthanum oxide slurry, in particular to a preparation method of a highly dispersed fine lanthanum oxide slurry. Background technique [0002] As we all know, rare earth materials can not only modify, purify and strengthen metals and alloys, but also improve the high-temperature mechanical properties, high-temperature corrosion resistance and high-temperature oxidation resistance of metals and alloys. Lanthanum oxide is a cheap and extremely versatile rare earth oxide, which has been widely used in surface engineering, catalyst materials, electron emission materials, ceramic materials, luminescent materials, hydrogen storage materials, etc. [0003] Fine particles have large surface area, high surface energy, and high surface activity. When they exist in the form of single particles, they are in an uns...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the dispersion rate of the existing lanthanum oxide slurry is not high and the preparation is complicated, and to invent a method for preparing a highly dispersed fine lanthanum oxide slurry with a dispersion rate of more than 90%.