Process for preparation of complex of human acids and urea

Process for preparation of complex of human acids and urea

A process for preparing the complex of humic acid and urea includes such technological steps as stirring 5-10% ammonia water (80-200 portions), low-grade coal (10-90) and urea (90-10) at 60-105 deg. C or 2-6 hrs for complex reaction, settling to separate solid from liquid and drying, and features si...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHAOXIN CHENG, YUQIN LIU, LIPING WU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
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Beschreibung
Zusammenfassung:A process for preparing the complex of humic acid and urea includes such technological steps as stirring 5-10% ammonia water (80-200 portions), low-grade coal (10-90) and urea (90-10) at 60-105 deg. C or 2-6 hrs for complex reaction, settling to separate solid from liquid and drying, and features simple technology and low cost. The obtained organic complex salt and carbonyl additive can effectively suppress the decomposition speed of urea in soil and plant and increase the utilization rate of N and crops yield.