Process for producing a porous ceramic granular material for...

A - Human Necessities – 01 – K

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A01K 1/015 (2006.01) C04B 38/00 (2006.01) C04B 38/10 (2006.01) C09K 3/32 (2006.01)

Patent

CA 2051807

- 6 - ABSTRACT 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; deflocc- ulant 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 a product temperature above 600°C, for use as absorbents and/or absorbents, particularly animal litter or bedding, in which the starting substances are used in a specific mixing ratio and the shaped clay bodies or comminuted shaped clay bodies are fed with a residual moisture content of 5 to 25% into a preheated kiln and are baked at a predetermined product temperature in the range 750 to 1050°C, as well as products which can be produced according to it.

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