In sea salt you find a lot of different ingredients. In addition to sodium and chloride, small amounts of minerals such as calcium, magnesium, potassium, iron, zinc and other trace elements such as, for example, manganese. This makes it better for our body.
When seawater evaporates due to heat (solar radiation) and wind, salt remains behind.
For this they install shallow basins, which are called salt gardens, in which seawater is introduced. Sun and wind evaporate the water, the salt remains behind and is mostly won by hand.
Salines of Janubio, Lanzarote, Canary Islands, Spain / Salt production in Carmargue, France
If salt flowers forms on the surface of the water during the evaporation, this salt flower, is known as "Fleur de Sel", and won by hand. This salt is slightly stickier than others, since the water content is higher.
Another method is the collection of salt crystals as deposits on rocks on the respective coasts by hand. This salt is formed in a natural process also by evaporation. However, the collection could be dangerous and the cost of extracting are high. This Salt is not a clean and white one - the crystals are darker, sometimes colored to grey ore different brown - but you get a unique salt with lots of minerals and trace elements.
This kind of salt is mined in salt mines. In giant deposits, the remnants of dried-up oceans, are brought to the surface by mechanical means.
Salt mine in Turda Romania / Underground salt deposits / gallery in a salt mine
- Saline liquid is collected where it comes from the soil
- Salty fluid is pumped over a well from the soil
- Water is pumped under pressure into the ground with salt sediments. The water dissolves the salt and comes back as a saline fluid.
These liquids, normally water, with different salt contents are then processed. There are essentially two processes for salt production as salt works.
brine concentrating house, Bad Soden, Germany
- The water is pumped up from basin and flow over flow aids back into the basin. While the water runs along the trickling surfaces towards back to the basin, it evaporates by the action of natural heat and wind. This increases the salt content of the water. If there is a high salt content in the fluid it would be heated
- The salty liquid is heated to such an extent that the part of water evaporates (as during cooking) and the salt remains. The only difference to the other way is changing the way of heat. The nature components with sun and wind would be changed against a commercial/ industrial process with heating by fire/ gas/ electricity. The quantities are based on the heating volume and this process is easier to plan and handle.
The conventional cooking salt undergoes a chemical refining process in which it is purified. But also the trace elements, important for the body, are filtered out and only sodium and chloride remain. Refined salt lacks valuable minerals, as Calcium, magnesium, potassium, iron, zinc and other vital trace elements.
By adding other substances the flow behavior is improved and processing is facilitated. But also health effects are possible. By adding iodine or fluorine, for consumers existing deficits can be compensated.