Mine salt, also known as "well salt", "well salt" or "underground salt", is a kind of salt extracted from underground salt mines, which generally refers to salt made from underground natural brine by drilling and salt made from underground rock salt by processing. Well-mineral salt resources in central and western China are very rich. According to statistics, the monopoly position of sea salt in edible salt is gradually replaced by well-mineral salt.
China is a big salt-producing country, surpassing the United States for the first time in 2005 and ranking first in the world. Sea, lake, well, mineral and salt are three pillars, and the world is divided into three parts. In 2007, the total output of raw salt in China reached 63.35 million tons, including 31640,000 tons of sea salt, 253 1 10,000 tons of well salt and 6.4 million tons of lake salt. Statistics from China Salt Yearbook show that the national crude salt output increased by 5.82 million tons every year from 2006 to 2007.
The origin of mine salt
1, asara mine salt: asara mine is located in Poland and is one of the most famous mine salt mines in the world. This mine salt mine can be traced back to13rd century, when the king of Poland ordered the mining of salt mines in this area. Due to the infiltration of groundwater, the movement of the earth's crust and the evaporation of salt water, a large number of salt layers have been formed in this mine.
2. Salt in Zahir Mine: In the past 200 years, the mine has been mining salt mines. The salt bed in this area is formed by waves attacking the coast and dissolving in underground water. Long-term evaporation and groundwater movement gradually coagulate salt mines. The salt in Zahir mine has formed a huge salt cave, which is famous for its beautiful structure and rich mineral resources.
3. Xushan Mine Salt Spring: This mine is formed by the infiltration and seepage of underground rock after the salt in groundwater is dissolved. Due to the high concentration of salt, the salt in the water gradually condenses and forms a salt mine. The salt spring in Xushan Mine is pure and rich in minerals, which provides valuable resources for the development of local salt industry.
Refer to Baidu Encyclopedia-Mine Salt for the above contents.