Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1984-03-26
1985-06-18
Heller, Gregory A.
Chemistry: fertilizers
Processes and products
Inorganic material
71 34, 423308, 423312, E05B 6732
Patent
active
045239410
ABSTRACT:
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.
REFERENCES:
patent: 988734 (1911-04-01), Peacock
patent: 1816051 (1931-07-01), Lloyd et al.
patent: 3635669 (1972-01-01), Rubin
Abdel-Hehim Hossam A. A.
Coelho Wagner C.
Soares Gloria M. G.
Heller Gregory A.
Petroleo Brasileiro S.A. - Petrobras
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