Rice hull ash compositions

Details Rice hull ash compositions Rice hull ash compositions

1984-02-13

1986-02-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Pore-forming

106 75, 501133, 501154, C04B 2100, C04B 3102, C04B 3514

Patent

active

045713898

ABSTRACT:
Disclosed is a lightweight silicate aggregate produced by 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. The expanded aggregate is useful as, inter alia, a sorbent, filler, energy insulator or filter.

REFERENCES:
patent: 4203773 (1980-05-01), Temple et al.
patent: 4308065 (1981-12-01), Wall-Muycelo

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