Process for producing solutions of alkali metal silicate in a st

Details Process for producing solutions of alkali metal silicate in a st Process for producing solutions of alkali metal silicate in a st

1983-04-06

1985-05-28

Straub, Gary P.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C01B 3332

Patent

active

045200017

ABSTRACT:
The process for producing a clear solution of alkali metal silicate having an SiO.sub.2 /alkali metal oxide weight ratio of 2.5 or less which comprises passing an aqueous solution of an alkali metal hydroxide through a bed of crystallized silica having an average particle size of between about 0.1 mm and 2 mm formed in the bottom of a vertical tubular reactor without mechanical agitation, said silica and alkali metal hydroxide being fed from the top of the reactor, and recovering the resulting clear solution of alkali metal silicate from the bottom of the reactor.

REFERENCES:
patent: 2251515 (1941-08-01), Curll
patent: 4336235 (1982-01-01), Deabriges
Frederick C. Price, "New: Liquid-Process Sodium Silicate", Chemical Engineering, Feb. 5, 1962, pp. 76-78.
Vail, J. G., Soluble Silicates, vol. 1, p. 6, Reinhold Pub. Corp., (1952).
John C. Olsen, Unit Processes and Principles of Chemical Engineering, (D. Van Nostrand, Inc., New York, 1932), pp. 1-3.
Joseph A. Babor, Basic College Chemistry, (Thomas Y. Crowell Company, New York, 1953, second edition), p. 256.

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