APPARATUS AND METHOD FOR PRODUCING METAL FINE POWDER

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for producing a metal fine powder, capable of collecting the metal fine powder by bringing liquid particles of a molten metal supplied by a gas atomization method into collision against a surface of a disk rotating at high speed to subject them to secondary fragmentation, and further by cooling the liquid particles with a small amount of cooling medium without hindering the fragmentation.SOLUTION: An apparatus for producing a metal fine powder comprises: a melting tank 1 for storing a molten metal A; an atomizing mechanism 2 for atomizing the molten metal A supplied from the melting tank 1 as liquid particles B by a gas atomization method; a molten metal fragmentation mechanism 4 for bringing the liquid particles B atomized by the atomizing mechanism 2 into collision into a surface of a disk 3 rotating at high speed with a highly pressurized gas 8 to subject them to fragmentation to make the particles finer; a cooling medium-supplying mechanism 5 for distributing and supplying the cooling medium C to each part of the apparatus; a collecting mechanism 6 for collecting cooled metal particles D; and a collecting tank 7 for storing the collected metal particles D and the cooling medium C.