Acid type solid urea-nitric fertilizer
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United States of America Patent
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Mar 26, 1985
Issued Date -
N/A
app pub date -
Oct 26, 1984
filing date -
May 21, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to the reaction of phosphate rock with nitric acid and urea to produce nitrogen-phosphorus containing slurries, which slurries, in turn, may be granulated and dried to produce solid N-P fertilizer products with agronomically advantageous low pHs (1.0-4.0). The products have excellent storage characteristics. The improved properties of these products result partially from the formation of a new compound, Ca(H.sub.2 PO.sub.4)(NO.sub.3).CO(NH.sub.2).sub.2, which was discovered during the course of the investigation that led to the instant invention.
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