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:
Mar. 05, 2013
Filed:
Jun. 27, 2010
Michael Bonan, Rekhasim, IL;
Eyal Ginzberg, Zikhron-Yaakov, IL;
Akiva Mozes, Rishon Lezion, IL;
Eyal Barnea, Nesher, IL;
Hugo Keselman, Carmiel, IL;
Gideon Friedman, Haifa, IL;
Ron Frim, Haifa Bay, IL;
Cornelis Petrus Langeveld, Zuidoostbeemster, NL;
Michael Bonan, Rekhasim, IL;
Eyal Ginzberg, Zikhron-Yaakov, IL;
Akiva Mozes, Rishon Lezion, IL;
Eyal Barnea, Nesher, IL;
Hugo Keselman, Carmiel, IL;
Gideon Friedman, Haifa, IL;
Ron Frim, Haifa Bay, IL;
Cornelis Petrus Langeveld, Zuidoostbeemster, NL;
IMI Tami Institute for Research and Development, Haifa Bay, IL;
Abstract
A method for the production of KNOfrom polyhalite is provided. The method comprises steps of decomposing said polyhalite into syngenite, gypsum, and soluble components, treating the solid decomposition products sequentially with HNOand Ca basic compound, precipitating the CaSOthus formed, and crystallizing the KNOfrom the solution remaining. The method recovers up to 75% of the potassium present in the raw polyhalite as KNOand substantially all of the remainder as a potassium magnesium sulfate salt.