The specific process of making salt is as follows:

1. Mining salt

First of all, salt needs to be obtained by mining salt. There are three main methods of collecting sea salt: one is sun salt, which uses sunlight and wind to evaporate seawater to dryness to obtain sea salt; the other is boiled salt, which is to dig some shallow pits in coastal areas, add seawater, and then cook it. , get sea salt; another way is to scrape salt, which is to scrape sea salt directly on the beach.

2. Crude processing

The obtained salt needs to be crudely processed. First, the collected salt is ground into fine salt particles. Then, put the salt granules into the water, boil and stir to dissolve the salt granules in the water. Next, let the solution cool down, and after the crystallization is complete, filter out the excess water to obtain crude salt.

3. Refining

Crude salt needs to be refined. First, grind the coarse salt to make the salt particles finer. Then, the ground salt particles are dissolved in water, and some chemicals, such as sodium hydroxide, hydrochloric acid, etc., are added to analyze and purify the salt. After many times of filtration and precipitation, the refined salt is finally obtained.

4. Packaging

The refined salt can be packaged. Before packaging, the salt needs to be dried to remove excess moisture. The salt grains are then placed into bags or boxes for sale. The salt production process also includes some auxiliary steps, such as cleaning equipment and testing quality. At the same time, different regions and different manufacturers may have different production techniques and processes.

In general, the salt production process includes the steps of salt mining, crude processing, refining and packaging. These steps are all aimed at extracting high-quality salt from raw materials to meet people's daily needs.

Extended knowledge:

Salt in chemistry refers to a type of compound in which metal ions or ammonium ions NH4+ are combined with acid ions, such as calcium sulfate, copper chloride, acetic acid Sodium, generally speaking, salt is the product of metathesis reaction, such as sulfuric acid and sodium hydroxide to generate sodium sulfate and water. There are also other reactions that can generate salt, such as displacement reaction, etc.