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Patent US4159311A successfully refreshed from Google Patents.
US4159311A
Expired / Lapsed
US
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Recovery of lithium from brines
Assignee: FMC Corp
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Filing: 1978-09-05
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Granted: 1979-06-26
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Expires: 1998-09-05
Abstract
Abstract Lithium is preferentially extracted from brine containing Li salts along with salts of other metals, e.g. Na, Ca, Mg, K, and/or B, by contacting the brine with a particulate anion exchange resin having suspended therein a microcrystalline form of LiX.sup.. 2A1 (OH) 3 , where X=halide.
Inventors
- 👤 John M. Lee
- 👤 William C. Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:13
CPC Classifications
C; C01; C01D; C01D15/00; B; B01; B01J; B01J47/00; B01J47/016; C01D3/00; C01D3/14; C01D3/145; C01F; C01F7/00; C01F7/78
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A process for removing Li + from aqueous brines, said process comprising, in sequence, the steps of: a. contacting a Li + -containing brine with an anion exchange resin having suspended therein a microcrystalline form of LiX.2Al(OH) 3 , where X is halogen; b. eluting Li + values from the resin by contacting it with an aqueous wash liquor; and c. repeating steps (a) and (b), sequentially, a plurality of times by using the resin from step (b) as the resin in step (a).
Claim 2
Dependent Claim
84 words
A process for removing Li + from aqueous brines, said process comprising, in sequence, the steps of: a. contacting a Li + -containing brine with an anion exchange resin having suspended therein a microcrystalline form of LiX.2Al(OH) 3 , where X is halogen; b. eluting Li + values from the resin by contacting it with an aqueous wash liquor; and c. repeating steps (a) and (b), sequentially, a plurality of times by using the resin from step (b) as the resin in step (a).
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the anion exchange resin is macroporous.
Claim 4
Dependent Claim
29 words
The process of claim 4 wherein the amount of lithium halide dissolved in the wash liquor is about 50 to about 200 mg. per liter, as Li + .
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein the aqueous wash liquor contains a small amount of lithium halide dissolved therein.
Claim 6
Dependent Claim
92 words
A process for recovering Li + values from Li + containing ores, said process comprising: providing the ore in particulate form and leaching water-solubles from the ore using an aqueous brine wash, thereby forming an aqueous brine solution containing Li + values, contacting the so-formed Li + -containing aqueous brine solution with an anion exchange resin having suspended therein a microcrystalline form of LiX.2Al(OH) 3 , where X is halogen, eluting Li + values from said exchange resin, by using an aqueous wash, and recovering Li + values from said aqueous wash.
Claim 7
Dependent Claim
92 words
A process for recovering Li + values from Li + containing ores, said process comprising: providing the ore in particulate form and leaching water-solubles from the ore using an aqueous brine wash, thereby forming an aqueous brine solution containing Li + values, contacting the so-formed Li + -containing aqueous brine solution with an anion exchange resin having suspended therein a microcrystalline form of LiX.2Al(OH) 3 , where X is halogen, eluting Li + values from said exchange resin, by using an aqueous wash, and recovering Li + values from said aqueous wash.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |