Patent ID: 8979948
Filing Date: 2015-03-17
Classification: A23L,C01D,Y02A

Abstract:
1. A process for preparing a salt product derived from sea water, comprising trace minerals from sea water, comprising the steps of (a) providing a concentrated brine from sea water, (b) transferring the concentrated brine to a crystalliser unit, (c) building up and maintaining a mother liquor substantially saturated in main salt constituents, including sodium chloride, magnesium chloride, magnesium sulphate, potassium chloride and potassium sulphate, (d) evaporating liquid from said crystalliser such that crystals of different salts form into particles with substantially homogeneous composition including double salts, (e) transferring crystals from said crystalliser through a wash unit such that said crystals are rinsed off mother liquor on the crystal surfaces that leaves the crystalliser with the crystals, said rinsing performed with a rinsing liquid which is transferred after the rinsing to the crystalliser, (f) collecting said rinsed crystals and transferring them to separating unit where excess liquid is removed from the crystals, and optionally drying the crystals, and (g) feeding back separated excess liquid to the crystalliser, thereby obtaining a salt product comprising trace minerals.