Title: | A Cost-effective Process for Recovery of Low Sodium Salt from Bittern |
Area: | Chemical Sciences |
Focus Area: | Recovery of Low Sodium Salt |
Patent: | AU2002232114, BR0215574, CA2473900, CN1304292, EP1470077, JP4509568, KR100804196, US6890509 |
Social Benefits: | The homogeneous mixture of sodium chloride and potassium chloride, which constitutes low sodium salt, can be produced directly from 29-30° Be'bittern instead of producing such salt through artificial mixing of the two solids as presently undertaken, The ratio of potassium chloride and sodium chloride can be adjusted in the range from 20% KCl to 70% KCl according to customer requirements by varying the baume density at which the carnallite crystallizer pan is charged, The process involves no heating or cooling except final drying of product in an oven and the production of crude carnallite is carried out under ambient conditions with the help of solar energy while subsequent processing of the carnallite for recovery of low sodium salt is also carried out under ambient conditions, Other nutrients like calcium and magnesium which are beneficial in small amounts are drawn from bittern itself and need not be added from outside, The supernatant liquor remaining after formation of low sodium salt can be recycled in the carnallite pan to boost yield of the process, A variety of calcium ion-containing raw material can be used for the desulphatation of bittern required for carnallite production when the bittern contains high levels of sulphate. |
Developing Agency: | CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Gujarat |
Technology Readiness Index: | Technology Development |
Email: | director@csmcri.res.in |
| Website Link : | http://www.csmcri.org |
| Source (more info) : | https://t.ly/l_sb |