Superphosphates from Brazilian phosphate concentrates

作者: E. Cekinski , J. H. Thomassin

DOI: 10.1007/BF01048773

关键词: PhosphateWater solubleLaboratory scaleLiquid phaseCuring (chemistry)Inorganic chemistryWater insolubleChemistryFertilizerImpurity

摘要: Superphosphates were produced on a laboratory scale with two Brazilian phosphate concentrates from ARAXA and CATALAO. The evolution of reactions occurring during the synthesis was followed by analysis liquid phase (chemical analysis) solids (X-ray chemical analysis). Results acquired for distribution phosphorus among water soluble, citrate soluble insoluble compounds. They confirm low reactivity studied igneous rocks. determination phosphates Fe3 (H3O, K)H8(PO4)6.6H2O formed reaction curing processes underlined main role impurities in ore.

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