C - Chemistry – Metallurgy – 05 – B
Patent
C - Chemistry, Metallurgy
05
B
C05B 1/02 (2006.01) C05B 1/00 (2006.01) C05B 11/08 (2006.01) C05B 17/00 (2006.01)
Patent
CA 2097593
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. Utilization particularly for the fabrication of fertilisers.
Le procédé vise la fabrication de produits phospho-azotés solubles dans le citrate neutre d'ammonium et dans lesquels il ne subsiste pas d'urée libre en quantité significative. Cette dernière est en majeure partie engagée dans une combinaison uréique du sulfate de calcium. On fait réagir du phosphate tricalcique avec un réactif obtenu par mélange d'acide sulfurique et d'urée. Utilisation notamment pour la fabrication des engrais.
Achard Patrick
Ilbizian Pierre
Limousin Laurent
Neveu Bernard
Peudpiece Jean-Bernard
Fetherstonhaugh & Co.
Grande Paroisse S.a.
Transvalor
LandOfFree
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