Phase changes in the syrian phosphorite–ammonium sulphate system.

With a complex of physico-chemical methods for analysis it is proved that in the course of mechanochemical treatment of a Syrian phosphorite and ammonium sulphate mixture new phases have been formed. The thermal analysis proves an increase in the reaction properties of the ammonium sulphate and the Syrian phosphorite which is a prerequisite for the increase in the content of P2O5 assimilated , in the activated phosphorite mixtures and the possibility to use them in the production of NP complex fertilizers. [ABSTRACT FROM AUTHOR]