Process for producing granulated filter material for water purification

摘要

A process for producing a granulated filtering material for purification of naturally-occurring waters for the preparation of potable water comprises a fluidized-bed granulation of an aqueous suspension of china clay with an additive of powder- like dolomite in an amount of from 20 to 25% by mass of china clay, followed by calcination of the resulting granules at a temperature of from 900 to 950 DEG C inclusive.