Invention Grant
- Patent Title: Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes
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Application No.: US16639503Application Date: 2018-08-17
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Publication No.: US11560318B2Publication Date: 2023-01-24
- Inventor: Gaurav N. Sant , Laurent G. Pilon , Erika Blanca Callagon La Plante , Bu Wang , Zongsu Wei , Sara Vallejo Castaño
- Applicant: The Regents of the University of California
- Applicant Address: US CA Oakland
- Assignee: The Regents of the University of California
- Current Assignee: The Regents of the University of California
- Current Assignee Address: US CA Oakland
- Agency: Foley Hoag LLP
- Agent David P. Halstead; Alexander J. Chatterley
- International Application: PCT/US2018/046981 WO 20180817
- International Announcement: WO2019/036676 WO 20190221
- Main IPC: C01F5/14
- IPC: C01F5/14 ; C01F5/22 ; C01F5/24 ; C01F11/00 ; C01F11/16 ; C01F11/18 ; C02F1/46 ; C02F1/44 ; C02F1/469 ; C02F1/52 ; C02F9/00 ; C02F1/66 ; C02F103/06 ; C02F103/08
Abstract:
Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.
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