Scale control in phosphoric acid manufacture

Details Scale control in phosphoric acid manufacture Scale control in phosphoric acid manufacture

1991-11-04

1992-06-09

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423320, C01B 2516

Patent

active

051205190

ABSTRACT:
High molecular weight copolymers of acrylamide which contain between 5-100 mole % of acrylic acid and have a molecular weight of at least 1,000,000 prevent scale adhering to surfaces in contact with digested phosphate rock and/or phosphoric acid produced from digestion.

REFERENCES:
patent: 3928551 (1975-12-01), Booth
Vol. 1, Parts 1 & 2, pp. 607-626 and pp. 159-209, Phosphoric Acid, Parts 1 & 2, A. U. Slack, M. Dekker, N.Y., Same as above, Ch. 4, pp. 331--359.

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