Settling out suspended solids in phosphoric acid product solutions
AssigneeAmerican Cyanamid Company
InventorsAndrew C. Poulos, Michael J. Thibodeau
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Abstract
For settling suspended solids in phosphoric acid product solutions, a copolymer of 95 mole percent ammonium acrylate monomer, 5% acrylamide monomer is shown to remove more solids than prior art flocculants when used in equivalent dosage, and to remove equivalent solids at much less dosage.
Claims4
In the process for manufacture of phosphoric acid by dissolving phosphate rock in aqueous sulfuric acid solution and separating solids comprising insoluble sulfates from said solution by means comprising flocculation of suspended solids with an organic polymeric flocculating agent, the improvement wherein said flocculating agent is a copolymer consisting essentially of a predominant proportion of polymeric acrylic acid or acrylate units and a minor porportion of acrylamide units.
Dependencies are inferred from the claim text.