Process for the preparation of a coagulating chemical comprising

Details Process for the preparation of a coagulating chemical comprising Process for the preparation of a coagulating chemical comprising

1995-01-10

1997-09-02

Howard, Jacqueline V.

Compositions

Water-softening or purifying or scale-inhibiting agents

Water-insoluble base-exchange agent containing

210696, 502414, 502415, 502407, 502 60, 423700, 423711, C02F 152

Patent

active

056628269

ABSTRACT:
The present invention relates to a process for the preparation of a coagulant for water purification, in particular purification of sewage water, for pulp and paper manufacture, for dewatering organic matter, for concentrating minerals, and containing a metal salt and silicate, whereby a solid zeolite is dissolved in a solution of trivalent metal salt in a molar ratio Me.sup.3+ :Si of >2:1, preferably 2-500:1, as well as a coagulant.

REFERENCES:
patent: 2004257 (1935-06-01), Tschirner
patent: 4486314 (1984-12-01), Koppelmann et al.
patent: 4837396 (1989-06-01), Henbst et al.
patent: 4981675 (1991-01-01), Haaje et al.
patent: 5071587 (1991-12-01), Perman
patent: 5194413 (1993-03-01), Kumar
Donald W. Breck, Zeolite Molecular Sieves, 1974 pp. 502-507.
Combined Coagulating Agent, Murin, Josef et al, CA:116:11000q 15 Jul. 1991 (CS 267, 323) p. 283.
Chemical Treatment for Strength Increase of Granulated Absorbents, Spitzen Pavol et al CA:118:24574W 29 Oct. 1991 p. 138.

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