Kinetics of Estonian Phosphate Rock Dissolution in Hydrochloric Acid
Ruhany Sheherazad Azeez,
Kaia Tõnsuaadu,
Tiit Kaljuvee
et al.
Abstract:The kinetics of the dissolution of Estonian phosphate rock and the governing reaction mechanisms in hydrochloric acid in technological processes were investigated. The influences of particle size and acid concentrations of 0.5–1.5 M on the reaction rate and the pH variation during the process were studied at a dosage of 2.1 moles of HCl per mole of calcium for 60 min. The results indicated that the solubility of phosphorus reached 94%–100% for the fine samples and 82%–99% for the coarse samples. The time requi… Show more
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