Improved Method for Producing Small Hollow Spheres

摘要

An improved method and apparatus for producing small hollow spheres of glass having an outer diameter ranging from about 100 mu to about 500 mu with a substantially uniform wall thickness in the range of about 0.5 to 20 mu are described. The method involves introducing aqueous droplets of a glass-forming solution into a long vertical drop oven or furnace having varying temperature regions. (ERA citation 05:028549)