Batch crystallization is a process used in chemical engineering and manufacturing to produce solid crystals from a liquid solution. In this process, the solution is heated until it becomes supersaturated, meaning it contains more solute than it can hold at that temperature. As the solution cools, the excess solute begins to crystallize out of the solution, forming solid crystals. This process is typically done in batches, with the crystals being separated from the remaining solution and dried before the next batch is started. Batch crystallization is used to produce a wide range of products, including pharmaceuticals, food additives, and industrial chemicals.