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:
Oct. 09, 2012
Filed:
Dec. 09, 2005
Indrajit Mukhopadhyay, Gujarat, IN;
Pushpito Kumar Ghosh, Gujarat, IN;
Puthoor Mohandas Vadakke, Gujarat, IN;
Abdulhamid Usmanbhai Hamidani, Gujarat, IN;
Venkata Rama Krishna Sarma Susarla, Gujarat, IN;
Rahul Jasvantrai Sanghavi, Gujarat, IN;
Indrajit Mukhopadhyay, Gujarat, IN;
Pushpito Kumar Ghosh, Gujarat, IN;
Puthoor Mohandas Vadakke, Gujarat, IN;
Abdulhamid Usmanbhai Hamidani, Gujarat, IN;
Venkata Rama Krishna Sarma Susarla, Gujarat, IN;
Rahul Jasvantrai Sanghavi, Gujarat, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The process of the invention deals with significant improvements in salt purity and whiteness brought about through treatment of brine with alum prior to charging into crystallizers for solar salt production. The improvements realized are partly on account of elimination of suspended impurities like gypsum and clayey matter in the brine, which may otherwise be carried along with the brine in the crystallizer and finally end up in the salt, and partly due to the improved crystal size and morphology that minimizes embedded impurities in the salt. Rain washing of the heaped salt has resulted in a salt with greatly reduced calcium and sulphate impurity levels hitherto not achieved in solar salt production. Alum treatment by the process of the invention requires no additional time or infrastructure and the cost of the treatment works out to <3 U.S. cents per ton of salt. The process can be implemented in any solar salt works.