Agglomerates of precipitated silica, method for their...

Details Agglomerates of precipitated silica, method for their... Agglomerates of precipitated silica, method for their...

2005-12-23

2010-06-15

Hill, Jr., Robert J (Department: 1797)

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C423S330100, C423S331000, C502S407000, C502S408000, C502S411000, C095S090000

Reexamination Certificate

active

07736611

ABSTRACT:
A method of producing a material including agglomerated particles of precipitated silica, including preparing a solution of at least two metal salts (Me), wherein the metal ions are divalent or polyvalent. A solution of alkali metal (M) silicate having a molar ratio SiO2/M2O of 1-4 is prepared. The solutions are mixed and the mixture stirred, allowing a coagulum to immediately form. The coagulum is rinsed, collected, dewatered, impregnated and processed to provide a material having a dry matter content of >75%, preferably >97%. A material obtainable by the process is also provided.

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