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US 6,036,935 AGranted
Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions
AssigneeDelta Chemical Corporation
InventorJames M. Dulko
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Abstract
The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
Claims12
A process for producing polyaluminum chloride comprising:
- (a) mixing a first solution comprising sodium aluminate with a second solution comprising basic aluminum chloride to produce a milky suspension wherein:
- (i) said mixing takes place under conditions of sufficiently high shear to prevent gel formation;
- (ii) said mixing is maintained below 50 degrees centigrade, and
- (b) obtaining a clear product solution comprising said polyaluminum chloride from said milky suspension.
1 more element
Dependencies are inferred from the claim text.