Method for the alteration of siliceous materials from bayer proc

Details Method for the alteration of siliceous materials from bayer proc Method for the alteration of siliceous materials from bayer proc

1993-11-22

1995-05-16

Hruskoci, Peter A.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210701, 210734, 210735, 210736, 423121, 423122, 423130, C01F 702

Patent

active

054157820

ABSTRACT:
Siliceous materials produced by thermally treating spent Bayer process liquors are obtained in modified form when produced in the presence of polymeric quaternary ammonium compounds, polyamine polymers, copolymers of acrylic acid and acrylamide, and polyacrylamides. These modified siliceous materials possess morphologies which confer upon them a reduced tendency to deposit on surfaces throughout the process.

REFERENCES:
patent: 4532047 (1985-07-01), Dubin
patent: 4578255 (1986-03-01), Roe et al.
patent: 4902425 (1990-02-01), Keeney
patent: 5133874 (1992-07-01), Spitzer et al.
patent: 5284634 (1994-02-01), Strominger et al.
patent: 5286391 (1994-02-01), Malito et al.
patent: 5314626 (1994-05-01), Dimas

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