Salt products used by humans are a multi-species product category, including large, small, lumpy, iodized, ordinary, sea salt. The most common product is sodium chloride, which we salt food. But how do you get salt?
Ancient methods of salt mining
Earlier, people mined salt from the ash that formed after burning some plant species. Sea water was added to the ashes, then the mixture was dried and became a product suitable for salting the food.
Over time, this method was replaced by the lander method or the basin method, based on the creation of artificial reservoirs on the seashore where the water was poured. After some time, the suspension in the form of sand, clay and other pollutants was precipitated to the bottom, the water was poured into the second reservoir, and after evaporation of part of the water, a new portion of water was added to it and people waited for it to completely evaporate. As a result of these actions, a layer of salt was formed on the bottom, which was collected for use in food and other purposes.
On the shore of the pool, the salt mass was folded with a mountain and left for natural washing. This work was done by the rains . The self-assembly method is still used, with the only difference that all processes are mechanized, their duration is reduced to a minimum and the resulting volumes are much higher than with manual labor.
Modern mining methods
The property of salt is its precipitation. This process occurs without the help of man. In nature, it is present in sedimentary rocks in sufficient quantities. Geologists call it rock salt, it really is a rock conglomerate. But if this monolith is affected by high temperatures and pressure, then it becomes softened, and it becomes so consistency that it can be chosen from rocks with salt-combines. If the salt layers lie shallowly from the surface, then the development is carried out by the career method. This method is the lowest cost and applies to salt deposits around the world.
Another method of extraction is used in the occurrence of salt formations at a depth from the surface. Its principle is to drill a well and pour water into it to dissolve salt. The resulting salt solution is pumped to the surface, then the salt is boiled from brine. This method is called vacuum, it is used to produce fine ground salt of the "Extra" type.
In the presence of huge salt domes in the depths of the mine, a mine is built into it, combine harvesters are started for excavation, and salt is mined on the same principle as coal or other solid minerals.
About potash salt deposits
In addition to sodium chloride salt, potash salt is mined. This is a unique fertilizer for crops and raw materials used in the light, chemical industry, energy and medicine. The main reserves of this mineral occur in the Perm region. The Verkhnekamsk salt basin contains more than 15% of the world's potash salt reserves.
There are a large number of deposits of deposits on the West Siberian platform, here, according to expert estimates, up to 60% of Russian reserves of potash salt are located. Many West Siberian deposits have not yet begun to develop, they are still considered only proven, and are the property of future descendants of the Russians.