METHOD FOR OBTAINING PHOSPHO-NITROGENOUS PRODUCTS AND PRODUCTS THUS OBTAINED

METHOD FOR OBTAINING PHOSPHO-NITROGENOUS PRODUCTS AND PRODUCTS THUS OBTAINED

PCT No. PCT/FR91/00965 Sec. 371 Date Sep. 15, 1993 Sec. 102(e) Date Sep. 15, 1993 PCT Filed Dec. 4, 1991 PCT Pub. No. WO92/10443 PCT Pub. Date Jun. 25, 1992.The method relates to the production of phospho-nitrogenous products soluble in neutral ammonium citrate and wherein free urea does not remain...

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Hauptverfasser: LAURENT LIMOUSIN, JUAN ALFRED SCHWOB, PIERRE ILBIZIAN, BERNARD NEVEU, JEAN-BERNARD PEUDPIECE, PATRICK ACHARD
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
NITROGENOUS FERTILISERS
PHOSPHATIC FERTILISERS
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Zusammenfassung:PCT No. PCT/FR91/00965 Sec. 371 Date Sep. 15, 1993 Sec. 102(e) Date Sep. 15, 1993 PCT Filed Dec. 4, 1991 PCT Pub. No. WO92/10443 PCT Pub. Date Jun. 25, 1992.The method relates to the production of phospho-nitrogenous products soluble in neutral ammonium citrate and wherein free urea does not remain in significant amount in such products. Most of the free urea is involved in a ureic combination of calcium sulphate. Tricalcic phosphate is reacted with a reactant obtained by mixing sulfuric acid and urea. The process is particularly useful for the manufacture of fertilizers.