Study of the process for obtaining special-purity potassium dihydrophosphate

Resumo

Method of radioactive tracers was used to study the coprecipitation of 3d-element impurities from KH₂PO₄ solutions on hydrated potassium-aluminum phosphate. The influence exerted by the mass of the collector, its contact duration with solution, pH value and concentration of KH₂PO₄ on the process efficiency was examined. The purification coefficients were calculated. The high efficiency of the process of KH₂PO₄ purification was demonstrated.