The effects of the phosphates mechanical activation

Abstract

The investigation was conducted with an aim to increase the reactivity of the comminuted phosphate ore and to establish the optimal mechanical activation period of the grain mixture. In order to obtain complete insight into the process and phenomena of the phosphate grain mixture activation, a good understanding of the theoretical principles of the activation operation is necessary. In the experiments, the vibratory and planetary mills were used as activators. The obtained results pointed out that both amorphous and crystallized forms appeared within the Lisina ore deposit mixture due to the specific genetic conditions which rarely occur in the deposits. Such a heterogenic composition of the useful phosphoric part of the ore gave a variety of the results during the leaching. For the first time, the experiments of phosphate (apatite) mechanochemical activation from Lisina ore deposit were performed in order to improve its reactivity.