Process for the partial solubilization of phosphate rock and obtaining acid and phosphate fertilizers therefrom

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United States of America Patent

PATENT NO 4469504
SERIAL NO

06411134

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Abstract

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A rapid, low temperature process for solubilizing phosphate rocks having high content of foreign matter or a low phosphorus content to obtain: (a) a slow release fertilizer of the NP type; (b) phosphoric acid of high concentration plus MAP; and (c) DAP.

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Patent Owner(s)

Patent OwnerAddress
PETTOLEO BRASILEIRO S APETRBRAS AVENIDA REPUBLICA DO CHILE 65 RIO DE JANEIRO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abdel-Hehim, Hossam Rio de Janeiro, BR 1 1
Coelho, Wagner C Rio de Janeiro, BR 2 2
Soares, Gloria M G Rio de Janeiro, BR 3 3

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