METHOD FOR PRODUCING METAL POWDER

摘要

A method for producing a metal powder comprising contacting a metal chloride gas and a reducing gas at a temperature in a temperature range for reduction to form a metal powder and subsequently contacting the metal powder with an inert gas such as nitrogen to cool the powder, wherein the rate of cooling is 30 DEG C/sec or more at least for temperatures from the temperature range for reduction to 800 DEG C. A metal powder is rapidly cooled, which results in suppressing the agglomeration of particles of the metal powder and the growth thereof to secondary particles. The growth of particles of a metal powder formed in a reduction process to secondary particles through agglomeration after the reduction process is suppressed, and a superfine metal powder having a particle diameter of, for example, 1 mu m or less can be produced stably.