Patent ID: 8282690

Claim:
A process for obtaining salt from brine, the said process comprising the steps of: (i) subjecting brine to solar evaporation to crystallize out carbonate salts and gypsum to obtain concentrated brine, (ii) mixing an alum solution with the above said concentrated brine, (iii) settling of suspended particles under gravity and subsequent clarification of brine in a pre-crystallizer, (iv) feeding the above said clarified brine into a crystallizer and while inhibiting flocs from entering into the crystallizer by maintaining adequate dead volume in the pre-crystallizer and also minimizing re-contamination of the clarified brine with clay/soil, and continuing solar evaporation to crystallize out salt, (v) repeating the steps of (ii) to (iv) to build up a salt layer in the crystallizer, (vi) draining out bittern from the crystallizer followed by charging fresh brine into the crystallizer, (vii) harvesting and washing of salt to obtain salt.