phosphate rock dolomitic

CONTINUOUS EFICIATION OF DOLOMITIC PHOSPHATE OR By B. E. Davis,l T. O. Llewellyn/ and C. W. Smith3 ABSTRACT Over 80 pct of domestic phosphate rock. which is the starting material for phosphorus-containing fertilizers. comes from central Florida depos its. As higher grade deposits are depleted, lower grade phosphate ores

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