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Removal of magnesium impurities from phosphate rock concentrates
Economic availability of byproduct fluorine in the United States (in two sections).
Fluosilicic acid acidulation of phosphate rock
Hydrochloric acid digestion and solvent extraction of western phosphates
Fluorine recovery from phosphate rock concentrates
Direct preparation of phosphoric acid from intermediate-grade western phosphatic shale
Leaching of phosphate values from two central Florida ores using H₂SO₄-methanol mixtures
Phosphate availability and supply :a minerals availability appraisal