AN IMPROVED PROCESS FOR PREPARING ADSORBENT REFRACTORY OXIDES FOR USE IN REFINING FATTY MATERIALS

摘要

Adsorption agents such as silica gel used to remove impurities from fats and glyceride oils, are prepared by drying a hydrogel precipitate in two stages with an intervening stage in which the partially dried hydrogel is aggregated and dried without agitation in the second drying stage.