MANUFACTURING METHOD OF SMALL CERAMIC BEAD

摘要

PURPOSE: Provided is a process for producing small ceramic bead, which is excellent in degree of sphericity, is applicable for in various materials and produce quickly 0.5-5.0mm size of the bead in large quantities by using sphericity zone composed of a hydrophobic sphericity agent and a hydrophilic curing agent. CONSTITUTION: The small ceramic bead is obtained by the steps of: i) dispersing ceramic powder and a binder into water to make ceramic slurry having 10-1.000 poise of viscosity and 30-90wt% of ceramic powder content; ii) dropping the ceramic slurry to a vessel having a two-phase solvent being a hydrophobic sphericity solvent of the upper layer and a hydrophilic solidification solvent of the lower layer, to form a spherical ceramic bead by being connected to the sphericity solvent and the solidification solvent by turns; iii) recovering the ceramic bead from the vessel; and then iv) drying and heating it.