Increasing alumina slurry life

Details Increasing alumina slurry life Increasing alumina slurry life

1978-10-02

1980-03-04

Carter, Herbert T.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423265, 423625, C01F 700

Patent

active

041917375

ABSTRACT:
Alumina slurries (suspensions) can be stabilized against viscosity increases by treating with water which has been heated to temperatures of from about 40.degree. C. to about 100.degree. C., then cooling, decanting the water, and recovering a wet cake. Water is then added to the recovered wet cake alumina to obtain a slurry with a desired alumina content and CO.sub.2 is sparged through the finished slurry. Optionally, hot water saturated with carbon dioxide can be used for the treatment, to extend the stability of the slurry. Peptizing agents can be used as usual.

REFERENCES:
patent: 3653937 (1972-04-01), Koenig
patent: 4117105 (1978-09-01), Hertzenberg et al.

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