Calcium bromide usage and production method

                                                         Calcium bromide usage and production method

usage

Calcium bromide can be used in petroleum drilling, as well as in the manufacture of ammonium bromide, photosensitive paper, fire extinguishing agents, refrigerants, and so on. Used as a central nervous system depressant in medicine, it has inhibitory and sedative effects and is used to treat conditions such as neurasthenia and epilepsy.

Production method

The ferrous bromide method is carried out in a reactor containing water. Iron filings are added, and bromine is added in batches under stirring. The reaction is carried out at 40 ° C to generate ferrous bromide. Calcium hydroxide is then added to adjust the pH value, heated to boiling, and cooled and separated to remove ferrous hydroxide. The filtrate is evaporated and cooled to 30 ° C and left to stand. After decolorization, filtration, and evaporation to around 210 ° C, it is cooled by Chemicalbook to obtain calcium bromide. The Fe+Br2 → FeBr2FBr2+ca (OH) 2 → CaBr2+Fe (OH) 2 ↓ direct method is used to pass ammonia gas into lime milk, add bromine, react at below 70 ℃, filter, keep the filtrate under alkaline conditions to remove ammonia, let it stand, decolorize, concentrate the filtrate, and obtain the finished product of calcium bromide.