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 Patent Profile

Patent No: IN263979 [India] Application No: 2622DEL2006
Title: An improved process for preparation of magnesia (MgO) from crude Mg (OH)2
Issue Date: 28-12-2014 File Date: 31-01-2006
Inventor(s): GHOSH PUSHPITO KUMAR, JOSHI HIMANSHI LABHSHANKER, DERAIYA HASINA HAJIBHAI, GANDHI MAHESHKUMAR RAMNIKLAL, DAVE ROHIT HARS
IPC Classification: NA
Abstract: The present invention provides an improved process for the preparation of MgO from the reaction of magnesium salt and alkali/lime . The crude Mg(OH)2 is directly calcined and then treated with water to disintegrate the mass spontaneously to yield a slurry and dissolve away the soluble salts. This slurry is much easier to filter and wash than the original Mg(OH)2 slurry, which helps to speed up the purification operation and also conserve fresh water. Another important advantage of the present method is that even pasty or dough like reaction products that are processed using dough mixers and similar equipment can be worked up with ease. There is no compromise in the quality of MgO achieved in this manner.
Licensing Option: License is already granted. Technology has already been Commercialized. Further license is possible.
CSIR-Central Salt & Marine Chemicals Research Institute
CSIR-Central Salt & Marine Chemicals Research Institute[CSIR-CSMCRI]
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Industrial Applications Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes] Inorganic materials [Chemistry, Chemical Processes]

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CSIR-Themes Chemicals (including leather) and Petrochemicals