CRYSTAL GROWTH IN A SOLUTION IN STATIONARY CONDITIONS

摘要

The present invention relates to a method for crystal growth in a solution adapted for the fast, controlled and efficient preparation of large-dimension crystals from a supersaturated solution into a compound. The crystal growth is carried out in stationary conditions. In order to do so, the growth is carried out in a crystallisation chamber maintained at a constant temperature Tc and in fluid communication with a saturation chamber at a temperature Ts that is also constant but different from Tc, the compound solubility at the Ts temperature being higher than compound solubility at the temperature Tc. A continuous solution circulation is established between the crystallisation and saturation chambers, thus maintaining a constant supersaturation ratio in the crystallisation chamber. The circulating solution is further submitted to a treatment for removing and inhibiting the formation of aggregates, thus inhibiting the nucleation of parasitic crystallites.