High generation factor, spherical synthetic kaolinite and its manufacturing method

摘要

PURPOSE: To produce spherical kaolinite having a high rate of formation, excellent in slurrying characteristics and compacting characteristics and incapable of production by the conventional method. ;CONSTITUTION: Spherical synthetic kaolinite having ≥95% rate of formation is produced by hydrothermally treating uniformly mixed silica-alumina gel in two stages at ≤220°C and at 220°C. The objective spherical synthetic kaolinite having a high rate of formation and applicable to ceramics, paper, pharmaceuticals, etc., can be produced.;COPYRIGHT: (C)1994,JPO&Japio