FERTILIZER BASED ON MICRONIZED UREA AND METHOD FOR PRODUCING THE FERTILIZER

The present application defines a method for producing urea-based nitrogenated fertilizer, comprising the preliminary micronization of urea (to particles of less than 10 μn), and subsequent addition of an urease inhibitor (H3BO3, CuSO4 or N-(n-butyl)thiophosphoric triamide (NBPT)) and/or a clay mine...

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Bibliographische Detailangaben
Hauptverfasser:	POLIDORO, JOSÉ CARLOS, PAVINATO, PAULO SERGIO, RECH, IONÁ
Format:	Patent
Sprache:	eng ; fre ; por
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS NITROGENOUS FERTILISERS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present application defines a method for producing urea-based nitrogenated fertilizer, comprising the preliminary micronization of urea (to particles of less than 10 μn), and subsequent addition of an urease inhibitor (H3BO3, CuSO4 or N-(n-butyl)thiophosphoric triamide (NBPT)) and/or a clay mineral (zeolite), followed by granulation. The application also relates to the thus obtained fertilizer in the form of a granulate, pellets or tablets. La présente invention concerne un procédé de production d'engrais azoté à base d'urée, consistant d'abord à microniser l'urée (particules inférieures à 10 μm), puis à additionner un agent inhibiteur de l'uréase (H3BO3, CuSO4 ou N-(n-butyl)-triamide thiophosphorique (NBPT)) et/ou un minéral argileux (zéolite), le produit étant alors granulé. L'invention concerne également l'engrais en granules, pastilles ou comprimés ainsi obtenu. O pedido em questão define um processo de produção de fertilizante nitrogenado a base de ureia que compreende micronização prévia da ureia (partículas inferiores a Ι Ομπι) e posterior adição de um agente inibidor da urease (H3BO3, CuSO4 ou N-(n-butil)triamidatiofosfírico (NBPT)) e/ou argilomineral (zeólita), sendo então granulado. Consta também no pedido o fertilizante em grânulos, pastilhas ou tabletes obtido.