Process for producing a porous ceramic granular material for use as an adsorbent and/or absorbent, particularly as animal litter

Abstract From the Canadian patent

Process for the production of a porous ceramic granular material with pore sizes of ? 1 mm, in which the clay; calcite quartz sand, dolomite, feld-, spar, chamotte kieselguhr and/or sepiolite as additives; water; deflocculant and surfactant are mixed and foamed in known manner and subsequently the foamed mixture is optionally shaped into shaped clay bodies the latter, are dried at a temperature between ambient temperature and 200°C the dried, shaped clay bodies are optionally comminuted and accompanied by the return, of the fines to the starting mixture are screened and subsequently the, shaped clay bodies or the comminuted shaped clay bodies with a selected particle size range are baked at …