producing purified salt from raw rock saltReading time:
Before undergoing electrolysis, the raw rock salt solution must go through the following steps :
- brine must be clarified and de-aerated;
- Mg2+ must be precipitated using lime and Ca2+ using sodium carbonate; this is carried out in Circulator, Turbocirculator, Densadeg type reactors;
- sulphates are partly removed using lime or calcium chloride, and the crystallization water stock solutions recycled in Densadeg type reactors.