Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1982-01-08
1983-09-06
Kittle, John E.
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
252175, 252179, 2523635, 210710, 210716, 210717, 210722, 210726, 210738, C02F 510
Patent
active
044028512
ABSTRACT:
A pumpable water-purifying dispersion containing iron(II)sulphate, the iron(II)sulphate being dispersed in an aqueous phase with a dispersing agent containing an alkaline earth metal and a basic anion. The best dispersion properties are obtained when the dispersing agent is calcium carbonate or calcium hydroxide, whereby the resultant composition having a content of up to about 70% solid iron(II) sulphate, calculated as heptahydrate on the total weight of the composition, can be obtained and handled without difficulty. The aqueous phase can, to advantage, comprise metal ions active in water-purification, such as Fe.sup.2+, Fe.sup.3+ and Al.sup.3+.
The invention also provides a method for producing the composition.
REFERENCES:
patent: 1440253 (1922-12-01), Travers
patent: 2362409 (1944-11-01), Samuel
patent: 2771342 (1956-11-01), Lamanna
patent: 3082173 (1963-03-01), Horvitz
patent: 3097163 (1963-07-01), Riddick
patent: 3183186 (1965-05-01), Oster
patent: 4180459 (1979-12-01), Zievers
patent: 4292085 (1981-09-01), Piccolo et al.
Boliden Aktiebolag
Kittle John E.
Le Hoa Van
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