Patent Profile
| Patent No: | IN267611 [India] | Application No: | 0057DEL2008 |
| Title: | An improved process of preparation of common salt of high purity from brines in solar salt pans | ||
| Issue Date: | 24-07-2015 | File Date: | 07-01-2008 |
| Inventor(s): | ARVIND KUMAR, PUSHPITO KUMAR GHOSH, VADAKKE PUTHOOR MOHANDAS, INDRAJIT MUKHOPADHYAY, JIGNESH JASVANTRAI SHUKLA, RAHUL JASVANTRAI SANGHAVI | ||
| IPC Classification: | C01D 3/00, B01D 1/22 | ||
| Abstract: | The process of the invention is an improvement over the existing process of producing salt of high purity from alum-treated brine disclosed recently in the prior art. More particularly, the invention rectifies the ratio of Ca2+ to Mg2+ from a value <1 to a value in the range of 2-3 desired by chlor-alkali and soda ash industries. The improved process involves the adjustment of pH of clarified brine with aqueous HC1 so as to carry out salt crystallization at a pH of 6.5 instead of at the natural pH of ca. 7. The pH adjustment reduces the Mg2+ impurity in salt while slightly raising the Ca2+ impurity in the salt and thereby achieving the desired ratio. | ||
| Licensing Option: | Technology development complete. Engineering package can be supplied. | ||
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: director[at]csmcri[dot]res[dot]in
:91-278- 2569496 Ext. 6000, 6010
:https://www.csmcri.res.in
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