Method of improving gypsum slurry filtration in the production o

Details Method of improving gypsum slurry filtration in the production o Method of improving gypsum slurry filtration in the production o

1991-10-15

1993-05-18

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423320, C01B 2516

Patent

active

052119289

ABSTRACT:
A method for improving gypsum slurry filtration in the production of wet process phosphoric acid wherein an effective amount of carboxylic-type polymer having a portion of sulfonic functionality is used as the filtration aid. Preferred polymers are high molecular weight polymers of acrylic acid and acrylamido methylpropyl sulfonic acid.

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Chemical Abstracts 83:181589 (1975).
Chemical Abstracts 86:123780 (1977).
Chemical Abstracts 91:195236 (1979).
Chemical Abstracts 96:8835 (1982).
Chemical Abstracts 99:214925 (1983).

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