Patent ID: 7323655

Claim:
A plasma reactor apparatus for producing nano-powder comprising: an upper body having a reaction pipe receiving a reactor extending vertically inside thereof, a high-frequency coil surrounding the outer periphery of the reaction pipe, and a ceramic inner wall provided inside the reaction pipe, the ceramic inner wall being formed with a plurality of gas passing bores and defining gas movement passage with the reaction pipe therebetween for allowing the inflow of argon gas from the outside into the reactor; and a cover mounted to an upper end of the reactor and adapted to seal the reactor, the cover being provided with a powder injection tube communicating with the reactor; wherein the upper body is provided with a permanent magnet assembly around the periphery of the high-frequency coil, the magnet assembly comprising a plurality of permanent magnets uniformly spaced apart from one another and combined by fixing means and having inner ends of the same polarity as one another disposed radially inwardly in contrast to opposite ends thereof being a different polarity and disposed radially outwardly so that they compress plasma inside the reactor, thereby preventing the plasma from being adsorbed to the wall of the reactor.