Patent ID: 7537746

Claim:
A process for producing inorganic spheres, which comprises injecting an aqueous liquid containing an inorganic compound comprising sodium silicate or potassium silicate into a laminar flow of an organic liquid which runs at a flow rate of from 0.001 to 2 m/s in a flow path compartmentalized by a partition wall through a plurality of inlet holes formed in one partition wall to form a W/O type emulsion containing the organic liquid as a dispersion medium and the aqueous liquid containing the inorganic compound as a dispersed phase, and solidifying the aqueous liquid containing an inorganic compound in the W/O type emulsion, wherein the partition wall having a plurality of inlet holes is made of a metal sheet having a surface subjected to water repellent treatment which is carried out using a solvent-soluble thermoplastic fluororesin, and wherein said laminar flow of the organic liquid is at a Reynolds number of at most 2,100.