Chemicals crystallisation process

Details Chemicals crystallisation process Chemicals crystallisation process

B - Operations, Transporting

01

D

B01D 9/00 (2006.01) B01J 2/00 (2006.01) C05G 5/00 (2006.01)

Patent

CA 2183774

In a chemicals crystallisation process, chemicals are at first molten then introduced into a container where they crystallise by heat extraction, are conveyed through the container and collected as a product. The process is characterised in that small, in particular monodisperse and at least partially solid particles are uniformly distributed in the container. The molten mass crystallises around said particles while they are conveyed through the container. The invention is useful for producing tablets of fertiliser.

Selon un procédé de cristallisation de substances chimiques, celles-ci sont d'abord fondues et introduites dans un récipient dans lequel elles se cristallisent par extraction de chaleur, puis traversent le récipient et sont prélevées sous forme d'un produit. Le procédé se caractérise en ce que l'on répartit uniformément dans le récipient de petites particules, notamment de la même taille, au moins en partie solides. La masse fondue se cristallise sur ces particules pendant qu'elles sont transportées à travers le récipient. L'invention sert à produire des engrais en pastilles.

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