The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2006
Filed:
Mar. 30, 2004
Pushpito Kumar Ghosh, Bhavnagar, IN;
Kaushik Jethalal Langalia, Bhavnagar, IN;
Maheshkumar Ramniklal Gandhi, Bhavnagar, IN;
Rohit Harshadray Dave, Bhavnagar, IN;
Himanshu Labhshanker Joshi, Bhavnagar, IN;
Rajinder Nath Vohra, Bhavnagar, IN;
Vadakke Puthoor Mohandas, Bhavnagar, IN;
Sohan Lal Daga, Bhavnagar, IN;
Koushik Halder, Bhavnagar, IN;
Hasina Hajibhai Deraiya, Bhavnagar, IN;
Ramjibhai Devjibhai Rathod, Bhavnagar, IN;
Abdulhamid Usmanbhai Hamidani, Bhavnagar, IN;
Pushpito Kumar Ghosh, Bhavnagar, IN;
Kaushik Jethalal Langalia, Bhavnagar, IN;
Maheshkumar Ramniklal Gandhi, Bhavnagar, IN;
Rohit Harshadray Dave, Bhavnagar, IN;
Himanshu Labhshanker Joshi, Bhavnagar, IN;
Rajinder Nath Vohra, Bhavnagar, IN;
Vadakke Puthoor Mohandas, Bhavnagar, IN;
Sohan Lal Daga, Bhavnagar, IN;
Koushik Halder, Bhavnagar, IN;
Hasina Hajibhai Deraiya, Bhavnagar, IN;
Ramjibhai Devjibhai Rathod, Bhavnagar, IN;
Abdulhamid Usmanbhai Hamidani, Bhavnagar, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The present invention is directed to a novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The process 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 MgClusing end bittern generated in the process of making carnallite. Decomposed carnallite liquor produced is reacted with hydrated lime for preparing CaClsolution and high purity Mg(OH)2 having low boron content. It is shown that the liquid streams containing potash are recycled in the process, and the recovery of potash in the form of SOP is quantitative.