Method of synthesizing zincosilicate or stannosilicate or titanosilicate material

Abstract From the Canadian patent

Sodium zinco/stanno/titano-silicate is synthesized by mixing a concentrated aqueous sodium zincate (stannate titanate) solution with a, source of silica (e.g. powdered glass or sodium metasilicate solution) in the ratio 60g sodium silicate to sodium zincate equivalent to 8.1g zinc oxide keeping the temperature at 40°C for 1/2 hour diluting threefold with water, of 20°C allowing a precipitate to form overnight and filtering and drying, the residue at 110°C. The resulting sodium zincosilicate may be used in its own right as a water softener or may be converted by cation exchange into any other desired zincosilicate.