There is disclosed a process for coating fine powder of a metal, a ceramic, a plastic or an organic pigment with a metal or a ceramic comprising: (a) dispersing particles of said fine powder into primary particles by fluid jet mill treatment in an inert atmosphere; (b) heating the dispersed fine powder...http://www.google.fr/patents/US4940523?utm_source=gb-gplus-shareBrevet US4940523 - Process and apparatus for coating fine powders
