Method and apparatus for the rapid solidification of molten material in particulate form

摘要

Described are methods and apparati for the rapid solidification of molten materials into finely divided particulate form. Molten material is atomized by a centrifugal atomizer which includes a rotating member with vanes which accelerate and atomize the molten material. The mist of atomized molten material thus produced is introduced into a mist of atomized liquid coolant or a mist of finely divided volatile solid coolant or a mixture thereof. The heat of solidification of the mist of molten material is rapidly transferred to the mist of coolant whereby the molten material solidifies into fine particles.