The harvested salt is loaded into trucks and transported to a wash plant located in Siwa, where the salt is washed with clean, nearly saturated brine to remove particulate matter and to replace magnesium-laden brine clinging to the salt crystals. Wash brine, made by dissolving fine salt in a settling pond, is free of magnesium and sulfate impurities.
The wash brine is recycled that dissolves the fine salt collected during washing. Weak brine is sometimes used as a final salt wash; however, production losses by dissolution are increased. After washing, the salt is stockpiled and allowed to drain.
solar salt will drain, with time, to a moisture level of _3.5%.
Further processing is making in Minya Factory to processing salt.by Hydromilling technique thereby the salt is washed,,centrifuged, drying kiln Dried , crushed, screened and separated into various grades .
Coarse solar salt is a premium product because of high purity and relatively large crystal size, making it quite suitable for use to regenerate cation-exchange water softener resins, textiles and laundry detergents.
Crushed, fine, dry, screened salt. Rewashed kiln dried and screened to capture extra fines.
Where the salt is used to make brines, it may be necessary to filter the brine.