INFLUENCE OF THE MECHANOCHEMICAL ACTIVATION UPON THE PHASE FORMATION IN THE SYSTEM SYRIAN PHOSPHORITE - AMMONIUM SULPHATE

摘要

The structural changes and the phase transformations of Syrian phosphorite and ammonium sulphate mixture in mass ratio 1:1 in the conditions of mechanochemical activation in a planet mill with steel milling bodies have been studied in the present paper. The thermal and spectroscopic research of the tribochemically activated mixtures proves that as a result of the treatment carried out, occur some considerable changes in the crystal structure of the initial phosphorite and the ammonium sulphate. The gas products precipitated during the process of mechanolysis of ammonium sulphate connect with areas with structural violations and facilitate their stabilisation. As a result of the occurred changes the content of the assimilated forms of phosphorus in the activated mixture is increased.