| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing particles having a high density and a high sphericity, and whose internal composition is uniform by a gelling method. SOLUTION: In the method for producing gel grains by dropping a raw material liquid into a reaction liquid, the dropping is performed after the filtration of the raw material liquid. Preferably, the raw material liquid is dropped to the liquid face of the reaction liquid covered with a cushion layer after the filtration of the raw material liquid, so that gel grains, e.g., having a mean particle diameter of≤5,000μm and a sphericity of <1.4 are produced, and the gel grains are sintered to obtain the high density spherical sintered particles having a density of≥97% to the theoretical density. COPYRIGHT: (C)2005,JPO&NCIPI
|
