Patent Profile
| Patent No: | US7041268 [USA] | Application No: | 10/814778 |
| Title: | Process for recovery of sulphate of potash | ||
| Issue Date: | 09-05-2006 | File Date: | 30-03-2004 |
| Inventor(s): | PUSHPITO KUMAR GHOSH, KAUSHIK JETHALAL LANGALIA, MAHESHKUMAR RAMNIKLAL GANDHI, ROHIT HARSHADRAY DAVE, HIMANSHU LABHSHANKER JOSHI, RAJINDER NATH VOHRA, VADAKKE PUTHOOR MOHANDAS, SOHAN LAL DAGA, KOUSHIK HALDER, HASINA HAJIBHAI DERAIYA, RAMJIBHAI DEVJIBHAI RATHOD, ABDULHAMID USMANBHAI HAMIDANI | ||
| IPC Classification: | C01D5/00, C01D3/06 | ||
| Abstract: | The present invention is directed to a novel integrated for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The requires bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the bittern, and is converted to schoenite which is subsequently reacted with muriate of potash (MOP) for its conversion to SOP. End liquor from kainite to schoenite conversion (SEL) is desulphated and supplemented with MgCl2 using end bittern generated in the of making carnallite. Decomposed carnallite liquor produced is reacted with hydrated lime for preparing CaCl2 solution and high purity Mg(OH)2 having low boron content. It is shown that the liquid streams containing potash are recycled in the , and the recovery of potash in the form of SOP is quantitative. |
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| Licensing Option: | License is already granted. Technology has already been Commercialized. Further license is possible. | ||
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:91-278- 2569496 Ext. 6000, 6010
:https://www.csmcri.res.in
Industrial Applications
Agrochemicals [Agriculture]
Fertilizers [Agriculture]
Inorganic materials [Chemistry, Chemical Processes]