Send Message
Home News

company news about Production Method of Calcium Chloride​ Anhydrous

China Guangzhou Hongzheng Trade Co., Ltd. certification
China Guangzhou Hongzheng Trade Co., Ltd. certification
Customer Reviews
Our company have been cooperating with Hongzheng for 5 years, their service is good and the staffs are stable. Mr.Lam has served me for 5 years, we are like friends. We mainly purchasing calcium chloride dihydrate, it has very good performance on rubber glove industry. Worth working with them.

—— Tomo Visava

Hereby, we confirm that the quality of anhydrous ferric chloride barreled one is good. Thank you for all your suggestion, also good after sales service.

—— Syed Avais Ali

Under here with, we'd like to certified that anhydrous sodium sulfate of 500 tons supplied in 2020, works so well in textile and dyeing industry.

—— Torikul Zaman

Very appreciate for your professional service & very happy to know you. We trust the quality of your products. It always the best. Keep this going, and we will establish a long-term trade relationship with you.

—— Bill

I'm Online Chat Now
Company News
Production Method of Calcium Chloride​ Anhydrous
Latest company news about Production Method of Calcium Chloride​ Anhydrous

1. Production principle

It can be prepared by the reaction of limestone and hydrochloric acid. The main chemical reactions are as follows:



2. Operation process

1) Calcium chloride dihydrate (CaCl2· 2H2O): Put hydrochloric acid (31%) and limestone powder into the reaction tank at a ratio of 2.2:1, and react under stirring to produce an acidic calcium chloride solution. In the clarification tank. Add lime milk to adjust the pH of the solution to 8.9-9, at this time iron hydroxide and magnesium hydroxide precipitate out. After clarification and filtration, the filtrate is transferred in an evaporating dish and heated to 172~174℃ to evaporate. After crystallization and separation, it is dried and dehydrated at 200~240℃ to obtain calcium chloride dihydrate.
2) Preparation of anhydrous calcium chloride: reheat the dihydrate calcium chloride to 260~300℃, dry and dehydrate, and it will become white anhydrous calcium chloride.
The process of fluidized production of granular calcium chloride is characterized in that liquid calcium chloride is used as a raw material, and the atomized liquid calcium chloride forms a mixed fluidized state with high-temperature hot gas at a temperature of 380-420℃. Under the action of calcium seed crystals, granular anhydrous calcium chloride is obtained.


Pub Time : 2021-12-27 09:57:00 >> News list
Contact Details
Guangzhou Hongzheng Trade Co., Ltd.

Contact Person: Miss. Jessic

Tel: +86 13928889251

Fax: 86-020-22307821

Send your inquiry directly to us (0 / 3000)