Polymeric aluminum silicate-sulphate and process for producing s

Details Polymeric aluminum silicate-sulphate and process for producing s Polymeric aluminum silicate-sulphate and process for producing s

1992-08-13

1994-03-22

Langel, Wayne

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

4233271, 423556, C01B 3326, C01B 774, C01B 3320

Patent

active

052962130

ABSTRACT:
The invention relates to basic polynucleate aluminum hydroxy silicate sulfate compounds and to a process for their preparation. The process involves first mixing an alkali metal silicate and an alkali metal aluminate solution and optionally a third component under continuous stirring to form an alkaline intermediate mixture and slowly adding the resulting alkaline intermediate mixture to an acidic aluminum sulfate solution under high shear mixing conditions. Compared to processes of the prior art, the present invention leads directly to solution products having higher Al.sub.2 O.sub.3 concentrations. Moreover, the products prepared through this invention exhibit enhanced stability over time, and improved performance in flocculation-coagulation application.

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