Process for preparing medium density granular sodium phosphates
AssigneeMonsanto Company
InventorLouis A. Highfill
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Abstract
A method of producing medium density granular sodium phosphates by agglomerating STP fines with mineral acids, drying the agglomerated fines and screening to recover the dry agglomerated fines.
Claims7
A method of producing medium density granular sodium phosphates comprising agglomerating STP fines with mineral acids selected from the group consisting of phosphoric acid, hydrochloric acid and sulfuric acid, drying the agglomerated fines and separating the dry agglomerated fines to recover the granular sodium phosphates.
A method of producing medium density granular sodium phosphates comprising agglomerating STP fines with mineral acids selected from the group consisting of phosphoric acid and sulfuric acid, air drying the agglomerated fines at room temperature and separating the dry agglomerated fines by screening to recover the granular SP wherein the agglomerated fines contain 35 to 95 weight % STP, 0 to 10 weight % trimetaphosphate, 10 to 60 weight % pyrophosphate and 0 to 25 weight % orthophosphate.
Dependencies are inferred from the claim text.