Current Location： Home > News > Chemical Knowledge > Production and manufacturing method and process of calcium chloride

[Chemical Knowledge]：Production and manufacturing method and process of calcium chloride

Read： 1622 Time：20months ago Source：Transform the World with Simplicity

Manufacturing method
of calcium chloride
Calcium chloride is a widely used chemical product, mainly used in the production of raw materials. There are a variety of manufacturing methods, and three common manufacturing methods will be described in detail here: acidolysis, alkaline solution and metathesis.

1. acidosis

acidosis is the reaction of limestone with hydrochloric acid to produce calcium chloride and water. This method has the advantages of simple process, convenient operation and low cost, but the resulting wastewater contains more chloride ions and needs to be treated before discharge. The specific steps of

are as follows:

1. Crush limestone to a certain particle size and mix it with hydrochloric acid in a certain proportion.
2. In the reaction kettle, control a certain temperature and pressure, so that limestone and hydrochloric acid fully react.
3. After completion of the reaction, unreacted limestone was removed by filtration to obtain a calcium chloride solution.
4. The calcium chloride solution is evaporated and concentrated, cooled and crystallized, and the calcium chloride product is isolated.

2. alkali solution

alkali solution is the reaction of calcium hydroxide with hydrochloric acid or chlorine to produce calcium chloride and water. The advantage of this method is that the resulting wastewater has a lower chloride concentration, but requires a higher consumption of calcium hydroxide. The specific steps of

are as follows:

1. Mix calcium hydroxide and water in a certain proportion to make a suspension.
2. Inlet hydrochloric acid or chlorine gas, control a certain temperature and pH value, so that calcium hydroxide and hydrochloric acid or chlorine gas fully react.
3. After completion of the reaction, unreacted calcium hydroxide was removed by filtration to obtain a calcium chloride solution.
4. The calcium chloride solution is evaporated and concentrated, cooled and crystallized, and the calcium chloride product is isolated.

3. metathesis

metathesis is the reaction of calcium carbonate with hydrochloric acid to produce calcium chloride, water and carbon dioxide. The advantage of this method is that the resulting wastewater has a lower chloride ion concentration, but requires a higher consumption of calcium carbonate. The specific steps of

are as follows:

1. Mix calcium carbonate and hydrochloric acid in a certain proportion to make a slurry mixture.
2. In the reaction kettle, control a certain temperature and stirring speed, so that calcium carbonate and hydrochloric acid fully react.
3. After completion of the reaction, unreacted calcium carbonate and carbon dioxide gas were removed by filtration to obtain a calcium chloride solution.
4. The calcium chloride solution is evaporated and concentrated, cooled and crystallized, and the calcium chloride product is isolated.

The above three methods have their own advantages and disadvantages. Which method to choose depends on factors such as the source of raw materials, production costs and environmental protection requirements. No matter which method is used, it is necessary to control the reaction conditions to ensure product quality and production safety. At the same time, the generated wastewater also needs to be properly treated to avoid environmental pollution.

In short, the manufacturing method of calcium chloride needs to be selected and optimized according to the specific situation to achieve the purpose of improving product quality, reducing production costs and protecting the environment.

Previous： Production and manufacturing method and process flow of sodium hypochlorite

Next： Manufacturing method and process flow of tin dioxide

News Categories