Process of forming free-flowing, particulate mixtures of phosphates and silicates
Abstract
Abstract Free-flowing, fast-dissolving, completely soluble, strong, granular particles containing a mixture of a hydratable alkali metal phosphate and an alkali metal silicate wherein the SiO2 to said phosphate mole ratio is at least 1:1, were produced by maintaining the alkali metal phosphate at a temperature of 60* to 100* C., gradually adding an aqueous solution of alkali metal silicate to the alkali metal phosphate, continually evaporating water from the resulting mixture, controlling the rate of addition of the alkali metal silicate solution so that the resulting mixture is maintained in the form of discrete particles, continuing said alkali metal silicate addition until the discrete, granular particles have an SiO2 to said phosphate mole ratio of at least 1:1, and recovering dry-appearing, granular particles which yield a pH of at least 10.5 in an aqueous 1 percent solution.
Inventors
- 👤 Duncan Simmons Corliss
- 👤 Russell Raymond Keast
- 👤 Saxman Richard Lewis
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
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