Salt ponds: Water evaporates and NaCl settles. Solution composition changes from A to B. When the solution is close to saturation (B) it is pumped into one of the carnallite ponds.
Carnallite pond: A mixture of NaCl and carnallite crystals settles. The solution composition changes from C to B. (Bromine is also concentrated in this stage). The settling crystals composition changes from C to H. At approximately the G point the mixture of NaCl and carnallite is harvested and is pumped to the plant.
The salt mixture is partially dissolved in a hot (105 Deg C) salt solution, and then in water (This is the major use of pure water in the process). The more soluble salt is MgCl2 and the crystal mixture composition moves in the direction of H.
The remaining crystal mixture of KCl and Nacl is separated by:
