Patent ID: 8888889
Filing Date: 2014-11-18
Classification: B01J,B22F,Y10T

Abstract:
1. A method for the manufacture of spherical particles comprising one or more metals, comprising the steps: a. providing a precursor solution comprising a solvent and one or more thermally decomposable metal containing compounds; b. forming an aerosol comprising finely divided droplets of the precursor solution dispersed in a carrier gas; c. passing the aerosol through one or more diffusion dryers, wherein 10% to 50% of the solvent in the aerosol particles is removed; d. heating the aerosol wherein, upon heating, spherical metal particles are formed, e. quenching the metal particle aerosol, and f. collecting the spherical metal particles, wherein the time in the diffusion dryer is between 25% and 200% of the time the particles are being heated of step d, wherein the spherical metal particles collected are non-fragmented, non-hollow.