INVESTEGATION OF THE PROCESS OF PRECIPITATION DEGREE PRECIPIATE DEPENDING FROM NATURE OF PRECIPITATING AGENTS
Abstract
The influence of the nature of the precipitating agents on the degree of precipitation of
nitricphosphoric acid suspensions has been studied. The effects of the norm of precipitating agents and
concentration of nitric acid on the degree of precipitation and the degree of CaO passage into liquid phase
were also studied. The optimal precipitation parameters are defined. The obtained precipitates under optimal
conditions contain as 23.75-24.75% P2O5t, 20.95-21.92% P2O5ac.c.a., 25.16-28.19% CaOtotal, 22.60-23.70%
CaOac.c.a.. The degree of precipitation under optimal conditions is 93.92-100%. The rate of filtration of
precipitate suspension is within 350-500 kg/m3
an hour for wet precipitate