How is the salt mine formed?

Salt mine is sea salt crystallized after solar drying seawater. After 600 million years of geological extrusion and underground high temperature, underground minerals and sea salt combined to form a "salt fossil"-mineral salt, which can be said to have no pollution and is the cleanest and greenest of the three kinds of salts (mineral salt, sea salt and well salt). Mineral salts are rich in minerals.

Expand the data mining process of salt mine;

1. Because salt mines are buried 280 meters to 500 meters underground, we should drill wells first. After arriving at the location of the salt mine, water is injected into the pipeline to dissolve the salt mine into brine, and then the brine is pumped into the salt making device for evaporation, drying and a series of processes. Simply put, the production process of well salt is the process of dissolution and recrystallization.

2, get through the shaft and underground roadway, access to the coal seam, so that underground and ground constitute a complete transportation and ventilation system, directly extract rock salt from underground. There are three ways of mine development: vertical shaft, inclined shaft and adit.

3. The rock salt obtained by dry mining can be directly crushed and sieved to obtain the finished product if the grade is high; If the grade is low, the ore will be dissolved in brine, purified and then evaporated and crystallized into salt.

4, shaft development and utilization of shaft directly connected to the ground and the corresponding horizontal roadway mining rock salt. It has strong adaptability to rock salt deposits with various geological conditions. It is especially suitable for deposits with large dip angle, deep burial depth, unstable surrounding rock and large output.

5. Inclined shafts use inclined tunnels and horizontal tunnels directly connected with the ground to mine rock salt, which is suitable for deposits with small dip angle, shallow burial and stable surrounding rock.

6, adit development and utilization directly connected with the ground level roadway and up and down the mountain road for pioneering work. It is suitable for rock salt deposits with deep and steep terrain cutting and some ore bodies buried below the horizontal erosion datum.

References:

Baidu encyclopedia-mineral salt