- 专利标题: Li recovery processes and onsite chemical production for Li recovery processes
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申请号: US18130190申请日: 2023-04-03
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公开(公告)号: US11891710B2公开(公告)日: 2024-02-06
- 发明人: Saad Dara , Beniamin Zahiri
- 申请人: Mangrove Water Technologies LTD.
- 申请人地址: CA Vancouver
- 专利权人: MANGROVE WATER TECHNOLOGIES LTD.
- 当前专利权人: MANGROVE WATER TECHNOLOGIES LTD.
- 当前专利权人地址: CA Vancouver
- 代理机构: RatnerPrestia
- 主分类号: C25B9/17
- IPC分类号: C25B9/17 ; C25B9/23 ; C25B11/032 ; C25B11/052 ; C25B9/21 ; B01D69/02 ; C01D15/02 ; C01D15/04 ; C01D15/08 ; C01F5/24 ; C01F11/18 ; C02F1/461 ; C02F1/469 ; C25B1/16 ; C25C1/02 ; C25C7/02 ; C25C7/04 ; C25B11/048 ; C25B11/046 ; C25B9/19 ; C25B11/053 ; C25B13/00 ; B01D61/46 ; C02F101/10 ; C02F103/08 ; C02F103/10
摘要:
In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.
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