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. 13, 2014
Filed:
Mar. 29, 2010
Pushpito Kumar Ghosh, Bhavnagar, IN;
Haresh Mahipatlal Mody, Bhavnagar, IN;
Jatin Rameshchandra Chunawala, Bhavnagar, IN;
Maheshkumar Ramniklal Gandhi, Bhavnagar, IN;
Hari Chand Bajaj, Bhavnagar, IN;
Pratyush Maiti, Bhavnagar, IN;
Himanshu Labhshanker Joshi, Bhavnagar, IN;
Hasina Hajibhai Deraiya, Bhavnagar, IN;
Upendra Padmakant Saraiya, Bhavnagar, IN;
Pushpito Kumar Ghosh, Bhavnagar, IN;
Haresh Mahipatlal Mody, Bhavnagar, IN;
Jatin Rameshchandra Chunawala, Bhavnagar, IN;
Maheshkumar Ramniklal Gandhi, Bhavnagar, IN;
Hari Chand Bajaj, Bhavnagar, IN;
Pratyush Maiti, Bhavnagar, IN;
Himanshu Labhshanker Joshi, Bhavnagar, IN;
Hasina Hajibhai Deraiya, Bhavnagar, IN;
Upendra Padmakant Saraiya, Bhavnagar, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
Kainite mixed salt is treated with water to obtain solid schoenite and a schoenite end liquor. The latter is desulphated using recycled CaCland thereafter evaporated to obtain camallite crystals, from which KCl is recovered, and a liquor rich in MgCl. Gypsum produced during desulphatation is reacted with aqueous ammonia and COto produce ammonium sulphate and calcium carbonate. The calcium carbonate is calcined to obtained CaO and CO. The CaO is slaked and reacted with the MgCl-rich liquor generated above to produce slurry of Mg(OH)in aqueous CaCl. To this surface modifying agent is added while hot and, after cooling, the slurry yields surface modified Mg(OH). The filtrate rich in CaClis recycled for desulphatation process above. The solid surface modified Mg(OH)may he calcined to produced MgO. The schoenite and KCl are reacted to produce solid sulphate of potash.