Method for separating particulate calcium hypochlorite and sodiu

Details Method for separating particulate calcium hypochlorite and sodiu Method for separating particulate calcium hypochlorite and sodiu

1982-05-03

1984-05-15

Straub, Gary P.

Chemistry of inorganic compounds

Halogen or compound thereof

Ternary compound

423499, C01B 1106

Patent

active

044487592

ABSTRACT:
Calcium hypochlorite particles and larger sodium chloride crystals are separated by passing an aqueous slurry containing such particles and crystals into a first classification zone comprising a two-stage substantially vertical elutriator-classifier. A first slurry in which the solid phase is predominantly calcium hypochlorite particles is removed from the upper stage of the first classification zone. A second slurry in which the solid phase is predominantly sodium chloride crystals is removed from the lower stage of the first classification zone and forwarded to a second classification zone comprising a two-stage substantially vertical elutriator-classifier. A slurry in which the solid phase is predominantly calcium hypochlorite particles is removed from the upper stage of the second classification zone and, in one embodiment, combined with overflow from the upper stage of the first classification zone. A slurry in which the solid phase is predominantly sodium chloride crystals is removed from the lower stage of the second classification zone. Elutriation fluid comprising a saturated solution of calcium hypochlorite and sodium chloride is introduced into the lower stages of each of the first and second classification zones.

REFERENCES:
patent: 1937190 (1933-11-01), Chance
patent: 3237767 (1966-03-01), Fowle
patent: 3251647 (1966-05-01), Nicolaisen
patent: 3767775 (1973-10-01), Tatara et al.
patent: 3950499 (1976-04-01), Miyashin et al.
patent: 4258024 (1981-03-01), Hoffer et al.
patent: 4328200 (1982-05-01), Welch

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