Process for preparing a lightweight expanded silicate aggregate

Details Process for preparing a lightweight expanded silicate aggregate Process for preparing a lightweight expanded silicate aggregate

1983-01-24

1984-12-18

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

501 84, C04B 3100

Patent

active

044889089

ABSTRACT:
Disclosed is a process for making a lightweight silicate aggregate. The process includes the steps of mixing together dry rice hull ash, an alkali metal hydroxide, boric acid, and water; heating the mixture to a temperature sufficient to initiate reaction; curing the composition at a temperature less than the boiling point of water until the reaction is complete; comminuting the cured product and heating the comminuted product to form the expanded aggregate.

REFERENCES:
patent: 4308065 (1981-12-01), Walls-Muycelo

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