In Bangladesh salt is produced from seawater by solar and lixiviation processes in the coastal areas.
The salt industry stands on the produced crude salt by the marginal salt farmers who use the solar evaporation method to produce crude salt in the summer season covering the months between November and May each year. Traditionally, salt was manufactured by vaporizing seawater with fire heat or sunlight.
Traditionally, salt was harvested from solar evaporation of saline water deposited on the salt beds. Salt evaporation clay beds are shallow in depth. A basin is designed to bring salty water from the sea and is deposited in a pond to make it clear. Then this water rinses on the clay salt bed and dries up the top of the bed through natural evaporation. As the water dries up, the salt crystals are harvested by raking.