Method for classifying powder

摘要

A method for classifying a powder using a fluid classifier, which comprises a mixing step of mixing a powder and an assistant agent composed of an alcohol, an input step of inputting the powder mixed in the mixing step into the fluid classifier, a heating step of heating a gas, a supply step of supplying the gas heated in the heating step into the fluid classifier, and a classification step of classifying the powder according to particle diameters in the fluid classifier.

主权项

1. A method for classifying powder using a fluid classifier, the method comprising:
a mixing step of mixing a powder with an auxiliary agent made of an alcohol; a feeding step of feeding the powder mixed at the mixing step into the fluid classifier; a heating step of heating a gas; a supplying step of supplying the gas heated at the heating step to the fluid classifier; and a classifying step of classifying the powder dispersed as fine particles in the fluid classifier based on particle diameter, wherein: (i) the powder is dispersed as fine particles as a result of vaporization of the auxiliary agent which is mixed with the powder in the fluid classifier, (ii) the powder is classified by way of a spinning air current generated in the fluid classifier, and (iii) the fluid classifier is configured to alter a temperature and speed of the spinning air current.