Industrial grade calcium chloride's Uses:
1. Oil drilling, drilling working fluid, completion fluid, petrochemical dewatering fluid. 
2, desiccant, such as nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide and other gases drying. 
3. Snow melting agent, using calcium chloride to melt heat and low freezing point as a road deicer and snow melting 
agent 4. Dehydrating agent, used as a dehydrating agent in the production of alcohols, esters, ethers and acrylic resins. 
5. Refrigerant, calcium chloride aqueous solution is an important refrigerant for refrigerators and ice making. 
6. Antifreeze agent can accelerate the hardening of concrete and increase the cold resistance of building mortar. It is an excellent building antifreeze. 
7. Early strength agent: early strength agent in construction industry, improving concrete strength, coagulant for living coatings 
8. Dust collector, used as antifogging agent for pavement and pavement dust collector and fabric fireproofing agent. 
9. Refining agent, used as a protective agent and refining agent for aluminum-magnesium metallurgy. 
10. Precipitant, a precipitant for the production of lake pigments. 
11. 
Coagulant: Inorganic chemical raw materials and sulfate removal agent for chemical industry, sodium alginate 12. Coagulant: latex coagulant for rubber industry. 
13. Used in the production of pigments and printing and dyeing industries. 
14. Used for waste paper processing and deinking. 
15. It is a raw material for the production of calcium salts.

Food grade calcium chloride 's uses
foods as a food additive calcium chloride is a widely used, general food calcium chloride for the food industry in the following situations: 
a beverage, as the electrolyte, enhancing the palatability 
2 pickled, calcium chloride It has a salty taste and can reduce the amount of salt in the 
cans. It can gelatinize and strengthen the consistency of the soup porridge 
, so that the soybeans can be emulsified and solidified. Improve the smoothness of tofu

Add regulation of food calcium
According to the "Food Sanitation Law of the People's Republic of China" and the "Administrative Measures for the Health of Food Additives", calcium chloride, a food additive, can be used as a stabilizer and coagulant, a nutrient enhancer and others, and the scope of use includes soy products, cream, Soft drinks, sweet sauce, jam, prepared water and processing aids for the food industry. 
Anhydrous calcium chloride as a food additive can improve the taste of food and is widely used in the food industry, according to the Food Sanitation Law of the People's Republic of China and The provisions of the "Food Additives Sanitary Management Measures", the use of food additives calcium chloride is as follows: 
1, soy products, cream: the maximum use of soy products, cream can be used in moderation according to production needs. 
2, soft drinks: the maximum use of soft drinks 0.44-3.7g / kg. 
3. Modulated water: The maximum amount of water used in the preparation is 100mg/kg or 100mg/1 (36mg/1 in terms of calcium). 
4, sweet sauce sweet sauce: the maximum use of sweet sauce sweet sauce 0.4g / kg. 
5, jam: the maximum use of jam in the 1.0g / kg. 
In particular, it is proposed to use the second-water powder for compound fertilizer, without the high content of calcium chloride, the high content of heat is not complete, and the next day will form a large block. The role of calcium chloride in the production process of compound fertilizer is granulation. Molding effect, using the viscosity of calcium chloride to achieve granulation, before the use of clay, clay is expensive, and the compound fertilizer is black, so it is replaced by calcium chloride. The dosage is determined according to the land situation, and some places are added. 20 kg / ton, some places plus 30, some places plus 50, less used in winter, more used in spring and summer

Three different differences between anhydrous calcium chloride and calcium chloride dihydrate
1 The form of existence, anhydrous calcium chloride and calcium chloride dihydrate are classified according to the form of calcium chloride molecules in the substance. Anhydrous calcium chloride has substantially no water, only a small amount of external moisture (about a few percent). Each calcium chloride molecule in the calcium chloride dihydrate exists in the form of two crystal waters, and the water content in the material is high. Does not mean that the quality is not good, only a form of existence of the material 
2 Appearance Anhydrous calcium chloride is generally spherical, 2-6 mm in diameter, calcium chloride dihydrate is generally flake, sheet thickness 1-2 mm, color purity The higher the color, the whiter the white, the lower the purity and the lower the whiteness. 
3 The net content of calcium chloride in anhydrous calcium chloride is 90% or more, and the calcium chloride content in calcium chloride dihydrate is 70% or 74%.

Production methods : There are two kinds of calcium chloride production processes, one acid method and one alkali method.
Acid process calcium production process
Most of the factories that produce calcium chloride by acid are located in mountainous areas. Using limestone and hydrochloric acid (generally by-produced hydrochloric acid at a concentration of 22-31), according to chemical reaction, the production principle of calcium chloride method is CaCO3 (marble/limestone) + 2 HCl (hydrochloric acid/hydrochloric acid) = CaCl2 (chlorination) Calcium) + CO2 (CO2) + H2O (water) 
acid method: 27% of liquid calcium is obtained by reacting 22% of dilute hydrochloric acid with limestone (about 52% of calcium), and the filter residue is discarded by filtration. Neutralization adjustment with lime milk, ph=8.9-9, precipitation of magnesium hydroxide, iron hydroxide, aluminum hydroxide, etc. in calcium chloride solution, filtration by filter press, filter cake as solid waste, filtrate for three Forced circulation vacuum evaporation (heated to 172 °C -174 °C evaporation, after crystallization, separation and drying at 200 °C -400 °C, dehydrated, obtained calcium chloride dihydrate, then heated calcium chloride dihydrate to 260 °C -300 °C, dry and dehydrated, that is, white anhydrous calcium chloride). Concentrate 27% calcium chloride solution to 68-69%, then enter the filming machine for tableting, flaky calcium chloride and then fluidized bed drying. % content of calcium chloride calcium chloride 
Process flow chart
 

Alkaline calcium production process
Alkali production of calcium chloride manufacturers are mostly located in the salinization base because the soda ash (waste liquid) is used in the soda ash plant 
to produce calcium chloride as a raw material process. 
1 Calcium chloride direct evaporation process, under normal circumstances The soda ash waste density is 1.12G/m3 - 1.13g / m3, of which CaCl2 content is 76.8g / L, NaCl content is 42.9g / L, and also contains a small amount of calcium hydroxide, gypsum, ammonium salt and suspension Impurities. After purification treatment, the multi-effect titanium plate evaporator is used for concentration, and when the calcium chloride concentration reaches about 40%, sodium chloride crystallizes. After high-efficiency salt separation, the solid phase is prepared into a refined industrial salt. After separating sodium chloride, the mass concentration of calcium chloride solution reaches 45%-50%, the density is about 1.45g/m3, and the lifting film evaporator continues to be rapidly concentrated, and when the concentration of calcium chloride is raised to about 50%, it is made. Tablet or granulation and drying to obtain dihydrate or anhydrous calcium chloride product 
2 calcium chloride salt field pre-evaporation process, calcium chloride in the area where natural evaporation is large, usually using salt field to spread the sun to the natural evaporation of soda ash waste liquid So that the waste liquid is settled and initially concentrated in the salt field. When the solution Baume degree is 29 ° b é, sodium chloride begins to precipitate. As the evaporation amount increases, the solution Baume degree can be raised to 32 °. b é -35 ° b é , at this time about 50% of sodium chloride is precipitated. After the initial precipitation, the calcium chloride solution enters the equipment for evaporation and salt precipitation, and the production operation is basically the same as the direct evaporation process. The process is very slow in the coastal areas of the interior, and it is difficult to naturally spread to above 29 ° b é. The natural evaporation efficiency of calcium chloride is very low. Suitable for places where dry and dry, natural evaporation and sufficient land area

Method flowchart of alkali calcium
salt ted, natural evaporation → alkali lye salt obtained in preliminary sedimentation concentrate, 29 ° b Baume sodium chloride began to precipitate when é → → increasing evaporation, solution Baume Can be raised to 32 ° b é -35 ° b é → pump the lye into the liquid pot, heat to evaporate to 41 Baume degree → cool in the tank for 24 hours, then evaporate to the calcium in the liquid pot The content is 74% → The semi-melt is placed in a stainless steel pan for cooling. 
Baume (° b é ) is a method for indicating the concentration of the solution. The Baume degree hydrometer is immersed in the measured solution, and the degree obtained is called Baume

The difference between the alkali method and the acid method:
The hardness of calcium chloride produced by the acid method is larger than that of the alkali method, the impurities are more, the color is unstable, and the taste is good. The acid method is cheaper than the alkali  method, the alkali method is thin and brittle, the purity is high, and the impurities are few. , the color is very white, tasteless