Crystallization - Main Crystallization Processes

Main Crystallization Processes

The main factors influencing solubility are, as we saw above:

• Concentration
• Temperature

So we may identify two main families of crystallization processes:

• Cooling crystallization
• Evaporative crystallization

This division is not really clear-cut, since hybrid systems exist, where cooling is performed through evaporation, thus obtaining at the same time a concentration of the solution.

A crystallization process often referred to in chemical engineering is the fractional crystallization. This is not a different process, rather a special application of one (or both) of the above.