Community Research and Development Information Service - CORDIS

Increasing the purification potential of drop formed granules by variation of the production parameters

The investigation of the size and shape of the pastilles in respect of their purification potential leads to optimised production parameters. The results will be used to adjust the process parameters of the granulation unit in such a way that the pastilles produced give an optimal purification behaviour in the subsequent wash column process. This knowledge will be published to third parties by seminars and congresses.

During pastille production, it was found that the purification potential of pastilles produced by a drop forming process from an impure melt can be influenced by the parameter settings. Different pastille properties are required according to the purification process namely sweating, rinsing, diffusion-washing, and crystallization. These can be either the pastilles' internal crystalline structure or their geometrical properties which in turn can both be influenced by the temperature of the pastillation surface and the initial impurity concentration of the melt.

Reported by

Martin-Luther-Universität Halle
Kurt-Mothes-Str. 1
06099 Wittenberg
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