Powder processing device using microwave torch plasma having high density in edge area

Abstract

A powder treating apparatus using microwave torch plasma having a high edge area density is disclosed. The powder treating apparatus includes a microwave waveguide, wherein when a dominant mode waveguide for transmitting an electromagnetic wave of a specific frequency is a, the microwave waveguide has a width of na, where n is an integer greater than or equal to 2; a discharge tube vertically extending through the waveguide such that all of two or more peaks of an electric field distribution within the waveguide are positioned in an inner space of the discharge tube; a plasma discharge gas injection unit disposed at a side of one end in a vertical direction of the discharge tube and configured to inject the plasma discharge gas into the discharge tube; and a treatment target powder injection unit disposed at a side of the other end in the vertical direction of the discharge tube and configured to inject the treatment target powder into the discharge tube.

Dependencies are inferred from the claim text.