PROCESS FOR THE PARTIAL SOLUBILIZATION OF PHOSPHATE ROCK AND FOR THE OBTENTION OF PHOSPHORIC ACID AND PHOSPHATE FERTILIZERS THEREFROM

摘要

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.