NPK-GJOEDNING MED REDUSERT TENDENS TIL SVELLING OG SAMMENKAKNING

The present invention relates to NPK-fertilizer manufactured during application of KC1 and or K2SO4 as potassium source and which also contains magnesium in an amount of 0,2-3,0% calculated as MgO and added in the product as MgO, and method for manufacture of this product The special features of the...

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Bibliographische Detailangaben
Hauptverfasser:	KJOEHL, OLAV, OBRESTAD, TORSTEIN, GROLAND, HANS
Format:	Patent
Sprache:	nor
Schlagworte:	CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM FERTILISERS PRODUCING CARBON DIOXIDE INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C 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
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Beschreibung
Zusammenfassung:	The present invention relates to NPK-fertilizer manufactured during application of KC1 and or K2SO4 as potassium source and which also contains magnesium in an amount of 0,2-3,0% calculated as MgO and added in the product as MgO, and method for manufacture of this product The special features of the method is that to an evaporated nitrogen, phosphorous solution 0,2-3,0% reactive MgO and potassium salts are added before prilling or before during granulation. MgO is preferably added as lightly calcined MgO having an average particle size of 0,2-3,0 mm, and is added in the mixer just before the prilling means. The new product has reduced tendency to swelling and caking.