The process begins by pumping in seawater with a salinity of between 3 and 4 degrees Baumé (density scale).
Distribution channels take the water to the evaporator tanks for the next phase of evaporation, which lasts approximately three months. Once a certain level of salinity has been reached, the water is pumped or conveyed by gravity to the concentrator tanks, where it reaches around 25 degrees Baumé.
In the next phase, salt crystals are formed by precipitation in crystallizers, where the density reaches around 28 degrees Baumé.
The crystallized and harvested salt is washed with saturated brine to remove impurities.
After washing, the salt is stacked on mats and exposed to the sun, wind and rain to reduce humidity and the presence of undesirable salts. This phase of the process is called curing and lasts approximately 90 days.
After being removed from the pile, the salt can be used in its raw form or sent to a processing plant (milling or refinery). SDB has a storage yard area of 6.3 hectares.