Molten phosphorus-potassium fertilizer, and its preparation process
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United States of America Patent
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Aug 23, 2016
Grant Date -
Nov 27, 2014
app pub date -
Sep 12, 2012
filing date -
Nov 4, 2011
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Abstract
The present invention relates to an amorphous, vitreous phosphorus-potassium fertilizer obtained by melting raw materials containing phosphorus pentoxide (P2O5), potassium oxide (K2O), providers of SiO2 and silicates, and providers of MgO and CaO. The fertilizer of the present invention is produced by a process of melting the raw materials, followed by quenching, enabling the formation of a vitreous and amorphous material containing phases of phosphorus and of potassium, which are soluble in a weak acid.
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