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Process Tomanufacture Phosphoric Acid From Dicalcium Phosphate

Oct 26 1976 · The invention relates to a combined process for the manufacture of feed grade dicalcium phosphate and pure phosphoric acid The process comprises the reaction of an excess of phosphate rock with aqueous solutions of a mineral acid selected from hydrochloric acid phosphoric acid and nitric acid characterized by the fact that the free acidity of the dissolution liquor does not exceed 60

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