NIOSHTIC 2 Publications Search 10004102 Continuous
Over 80 pct of domestic phosphate rock, which is the starting material for phosphorus-containing fertilizers, comes from central Florida deposits. As higher grade deposits are depleted, lower grade phosphate ores containing mgo in the form of dolomite are encountered. Treating high-mgo ores with present beneficiation technology will not yield a concentrate meeting specifications for acidulation.
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