RU94032653A - Method of producing high-purity lithium hydroxide or salts thereof from natural brines - Google Patents
Method of producing high-purity lithium hydroxide or salts thereof from natural brinesInfo
- Publication number
- RU94032653A RU94032653A RU94032653/26A RU94032653A RU94032653A RU 94032653 A RU94032653 A RU 94032653A RU 94032653/26 A RU94032653/26 A RU 94032653/26A RU 94032653 A RU94032653 A RU 94032653A RU 94032653 A RU94032653 A RU 94032653A
- Authority
- RU
- Russia
- Prior art keywords
- lithium
- alkali
- magnesium
- earth metals
- exceed
- Prior art date
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
FIELD: industrial inorganic chemicals. SUBSTANCE: brine is set free from alkali metals, magnesium, and alkali-earth metals by way of passing through brine layer lithium selective inorganic sorbent. Sorbed lithium chloride is washed away with water and simultaneously concentrated 10-20-fold (residual content of alkali and alkali-earth metals do not exceed 0.05 g/l). Resultant lithium chloride solution is converted in electrodialysis apparatus at current density 0.5-2.3 A/sq.dm into lithium hydroxide solution. The latter is concentrated in electrodialysis apparatus and partially evaporated to give LiOH•HO (or LiCO) crystals. Summary impurity content in dry product does not exceed 0.113%. Method is applicable to any chloride solutions with high sodium, magnesium, and calcium content. EFFECT: achieved simplicity and versatility of procedure.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94032653/25A RU2090503C1 (en) | 1994-09-06 | 1994-09-06 | Method of preparing lithium hydroxide or salts thereof of high purity from mother liquors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94032653/25A RU2090503C1 (en) | 1994-09-06 | 1994-09-06 | Method of preparing lithium hydroxide or salts thereof of high purity from mother liquors |
Publications (2)
Publication Number | Publication Date |
---|---|
RU94032653A true RU94032653A (en) | 1997-05-20 |
RU2090503C1 RU2090503C1 (en) | 1997-09-20 |
Family
ID=20160283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU94032653/25A RU2090503C1 (en) | 1994-09-06 | 1994-09-06 | Method of preparing lithium hydroxide or salts thereof of high purity from mother liquors |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2090503C1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1312040C (en) * | 2005-06-22 | 2007-04-25 | 广州锐鑫锂能新材料科技有限公司 | Purification production technique for producing high pure and high clear lithium hydroxide from lithium hydroxide in industrial grade |
KR20110008227A (en) * | 2008-04-22 | 2011-01-26 | 케메탈 푸테 코포레이션 | Method of making high purity lithium hydroxide and hydrochloric acid |
WO2010056322A1 (en) * | 2008-11-17 | 2010-05-20 | Chemetall Foote Corporation | Recovery of lithium from aqueous solutions |
KR101700684B1 (en) * | 2015-04-30 | 2017-01-31 | 재단법인 포항산업과학연구원 | Method and apparatus for manufacturing lithium hydroxide, and lithium carbonate |
RU2751948C1 (en) * | 2021-02-09 | 2021-07-21 | Акционерное общество «Аксион - Редкие и Драгоценные Металлы» | Method for processing hydromineral lithium-containing raw materials |
-
1994
- 1994-09-06 RU RU94032653/25A patent/RU2090503C1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
RU2090503C1 (en) | 1997-09-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20050907 |