Invention Grant
- Patent Title: Process for production of commercial quality potassium nitrate from polyhalite
- Patent Title (中): 生产商用优质硝酸钾的方法
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Application No.: US13380550Application Date: 2010-06-27
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Publication No.: US08388916B2Publication Date: 2013-03-05
- Inventor: Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
- Applicant: Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
- Applicant Address: IL Haifa Bay
- Assignee: IMI Tami Institute for Research and Development
- Current Assignee: IMI Tami Institute for Research and Development
- Current Assignee Address: IL Haifa Bay
- Agency: The Law Office of Michael E. Kondoudis
- International Application: PCT/IL2010/000515 WO 20100627
- International Announcement: WO2010/150267 WO 20101229
- Main IPC: C01D9/00
- IPC: C01D9/00 ; C01D9/02 ; C05D1/00 ; C05D1/04
Abstract:
A method for the production of KNO3 from polyhalite is provided. The method comprises steps of decomposing said polyhalite into syngenite, gypsum, and soluble components, treating the solid decomposition products sequentially with HNO3 and Ca basic compound, precipitating the CaSO4 thus formed, and crystallizing the KNO3 from the solution remaining. The method recovers up to 75% of the potassium present in the raw polyhalite as KNO3 and substantially all of the remainder as a potassium magnesium sulfate salt.
Public/Granted literature
- US20120201737A1 Process For Production Of Commercial Quality Potassium Nitrate From Polyhalite Public/Granted day:2012-08-09
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