Patent Profile
| Patent No: | IN260199 [India] | Application No: | 0258DEL2006 |
| Title: | An improved process for the preparation of magnesia (MgO) | ||
| Issue Date: | 04-04-2014 | File Date: | 31-01-2006 |
| Inventor(s): | GHOSH PUSHPITO KUMAR, JOSHI HIMANSHI LABHSHANKER, DERAIYA HASINA HAJIBHAI, GANDHI MAHESHKUMAR RAMNIKLAL, DAVE ROHIT HARSHDRAI, LANGALIA KAUSHIK JETHALAL, MOHANDAS VADAKKE PUTHOOR | ||
| IPC Classification: | C01F 5/00 | ||
| Abstract: | The present invention provides an improved process for the preparation of MgO of high purity >99% from salt bitterns via intermediate formation of Mg(OH)2 obtained from the reaction of MgCls and lime, albeit indirectly, i.e., MgCh is first reacted with NH in aqueous medium and the slurry is then filtered with ease. The resultant NH4Cl-containing filtrate is then treated with any lime, to regenerate NHs while the lime itself gets transformed into CaC that is used for desulphatation of bittern so as to recover carnallite and thereafter MgCla of desired quality required in the present invention. The crude Mg(OH)2 is dried and calcined directly to produce pure MgO, taking advantage of the fact that adhering impurities in the Mg(OH)2 either volatilize away or get transformed into the desired product, i.e., MgO. | ||
| Licensing Option: | License is already granted. Technology has already been Commercialized. Further license is possible. | ||
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Industrial Applications
Food Processes [Food,Beverages,Tobacco]
Marine [Biological Science]
Sustainable Development Goals (SDGs)
Industry, Innovation and Infrastructure
CSIR-Themes
Mining , Minerals, Metals And Materials