Preparation of sodium silicate solutions
AssigneeJ. M. Huber Corporation
InventorJohn A. Kostinko
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Abstract
Sodium silicate solutions are prepared by dissolving sand in sodium hydroxide solution at a pressure of at least 100 psig and at a temperature of at least 130.degree. C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of between 2.4:1 and 2.8:1, and activating said sodium silicate solution by reaction with from about 50 to 200 ppm of alumina.
Claims6
A method for the preparation of a sodium silicate solution which comprises dissolving sand in a sodium hydroxide solution at a pressure of at least 100 psig and a temperature of at least 130 degrees Celsius to produce a sodium silicate solution having a silica to sodium oxide molar ratio of between 2.4:1 and 2.8:1, and activating said sodium silicate solution by reaction with from about 50 to 2000 ppm of alumina.
Dependencies are inferred from the claim text.