US4018865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent-extraction process for recovery and separation of metal values
Assignee: King Industries Inc
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Filing: 1976-03-29
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Granted: 1977-04-19
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Expires: 1996-03-29
Abstract
Abstract The metal value separation efficiencies of aliphatic alpha -hydroxy oximes in solvent-extraction processes are enhanced by the addition to the solvent-extractant of an alkyl aromatic sulfonic acid having a molecular weight of at least about 400, the mole % of the sulfonic acid in the combined sulfonic acid and hydroxy oxime being in the range of 10 to 80. Especially important applications for the improved solvent-extractant are in the separation and recovery of copper from iron, nickel from iron, nickel from cobalt, copper from cobalt, copper from nickel, copper from zinc, zinc from nickel, nickel from zinc, zinc from iron and cobalt from zinc in acidic aqueous media.
Inventors
- 👤 Lawrence V. Gallacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:55
CPC Classifications
C; C01; C01G; C01G9/00; C01G9/003; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0492; C01G51/00; C01G51/01; C01G53/00; C01G53/01; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/34; C22B3/40; C22B3/402; C22B3/404; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
172 words
A process for recovering a first metal value from an aqueous solution comprising a pair of said first metal value and a second metal value, said pair being selected from the group consisting of copper and iron, nickel and iron, nickel and cobalt, copper and cobalt, copper and nickel, copper and zinc, zinc and nickel, nickel and zinc, zinc and iron, and cobalt and zinc, said process comprising contacting said aqueous solution at a pH of below about 3 with a solvent-extractant consisting of (i) an aliphatic α-hydroxy oxime, (ii) an alkylaromatic sulfonic acid having a molecular weight of at least about 400 and (iii) a water-immiscible solvent for (i) and (ii) and metal complexes thereof to provide a solution of said first metal value in said solvent-extractant, the mole % of (ii) in the combined (i) and (ii) being in the range of 10 to 80; separating the solution thus formed from the aqueous raffinate depleted in said first metal value; and recovering said first metal value from said separated solution.
Claim 2
Dependent Claim
172 words
A process for recovering a first metal value from an aqueous solution comprising a pair of said first metal value and a second metal value, said pair being selected from the group consisting of copper and iron, nickel and iron, nickel and cobalt, copper and cobalt, copper and nickel, copper and zinc, zinc and nickel, nickel and zinc, zinc and iron, and cobalt and zinc, said process comprising contacting said aqueous solution at a pH of below about 3 with a solvent-extractant consisting of (i) an aliphatic α-hydroxy oxime, (ii) an alkylaromatic sulfonic acid having a molecular weight of at least about 400 and (iii) a water-immiscible solvent for (i) and (ii) and metal complexes thereof to provide a solution of said first metal value in said solvent-extractant, the mole % of (ii) in the combined (i) and (ii) being in the range of 10 to 80; separating the solution thus formed from the aqueous raffinate depleted in said first metal value; and recovering said first metal value from said separated solution.
Claim 3
Dependent Claim
36 words
A process as defined in claim 1 wherein component (i) comprises an aliphatic α-hydroxy oxime of the formula: ##STR3## wherein R' and R'" are organic hydrocarbon radicals and R"" is a hydrogen or a hydrocarbon radical.
Claim 4
Dependent Claim
15 words
A process as defined in claim 2 wherein said aliphatic α-hydroxy oxime is 5,-8-diethyl-7-hydroxydodecan-6-one oxime.
Claim 5
Dependent Claim
20 words
A process as defined in claim 1 wherein said alkyl aromatic sulfonic acid (ii) is a polyalkyl aromatic sulfonic acid.
Claim 6
Dependent Claim
15 words
A process as defined in claim 4 wherein said polysulfonic acid is dinonylnaphthalene sulfonic acid.
Claim 7
Dependent Claim
17 words
A process as defined in claim 4 wherein said polyalkyl aromatic sulfonic acid is didodecylnaphthalene sulfonic acid.
Claim 8
Dependent Claim
26 words
A process as defined in claim 1 wherein the mole % of (ii) in combined (i) and (ii) is in the range of 15 to 70.
Claim 9
Dependent Claim
26 words
A process as defined in claim 1 wherein the mole % of (ii) in combined (i) and (ii) is in the range of 15 to 55.
Claim 10
Dependent Claim
21 words
A process as defined in claim 1 wherein said first metal value is recovered from said separated solution by acid stripping.
Claim 11
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises copper and iron and said pH is in the range of 0.9 to 2.0.
Claim 12
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises nickel and iron and said pH is in the range of 1.0 to 2.0.
Claim 13
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises nickel and cobalt and said pH is in the range of 0.98 to 2.0.
Claim 14
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises copper and nickel and said pH is in the range of 1.0 to 2.5.
Claim 15
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises copper and cobalt and said pH is in the range of 1.0 to 2.5.
Claim 16
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises copper and zinc and said pH is in the range of 1.0 to 2.0.
Claim 17
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises nickel and zinc and said pH is in the range of 1.0 to 2.0.
Claim 18
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises zinc and nickel and said pH is in the range of 1.5 to 2.0.
Claim 19
Dependent Claim
25 words
A process as defined in claim 1 wherein said pair comprises zinc and iron and said pH is in the range of 1.0 to 2.3.
Claim 20
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and iron values, said process comprising contacting said aqueous solution at a pH of from 0.9 to about 2 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 10 to 70; separating the solution thus formed from the aqueous raffinate depleted in said copper values, and recovering said copper values from said separated solution by acid stripping.
Claim 21
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and iron values, said process comprising contacting said aqueous solution at a pH of from 0.9 to about 2 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 10 to 70; separating the solution thus formed from the aqueous raffinate depleted in said copper values, and recovering said copper values from said separated solution by acid stripping.
Claim 22
Dependent Claim
90 words
A process for recovering nickel values from an aqueous solution comprising nickel values and cobalt values, said process comprising contacting said aqueous solution at a pH of from 0.98 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 50; separating the solution thus formed from the aqueous raffinate depleted in said nickel values; and recovering said nickel values from said separated solution by acid stripping.
Claim 23
Dependent Claim
90 words
A process for recovering nickel values from an aqueous solution comprising nickel values and cobalt values, said process comprising contacting said aqueous solution at a pH of from 0.98 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 50; separating the solution thus formed from the aqueous raffinate depleted in said nickel values; and recovering said nickel values from said separated solution by acid stripping.
Claim 24
Dependent Claim
91 words
A process for recovering nickel values from an aqueous solution comprising nickel values and iron values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 70; separating the solution thus formed from the aqueous raffinate depleted in said nickel values; and recovering said nickel values from said separated solution by acid stripping.
Claim 25
Dependent Claim
91 words
A process for recovering nickel values from an aqueous solution comprising nickel values and iron values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 70; separating the solution thus formed from the aqueous raffinate depleted in said nickel values; and recovering said nickel values from said separated solution by acid stripping.
Claim 26
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and nickel values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.5 with a solvent-extractant consisting of (i), 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 27
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and nickel values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.5 with a solvent-extractant consisting of (i), 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 28
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and cobalt values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.5 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovered said copper values from said separated solution by acid stripping.
Claim 29
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and cobalt values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.5 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovered said copper values from said separated solution by acid stripping.
Claim 30
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and zinc values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 31
Dependent Claim
91 words
A process for recovering copper values from an aqueous solution comprising copper values and zinc values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 25 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 32
Dependent Claim
90 words
A process for recovering nickel values from an aqueous solution comprising nickel values and zinc values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 33
Dependent Claim
90 words
A process for recovering nickel values from an aqueous solution comprising nickel values and zinc values, said process comprising contacting said aqueous solution at a pH of from 1.0 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 34
Dependent Claim
90 words
A process for recovering zinc values from an aqueous solution comprising zinc values and nickel values, said process comprising contacting said aqueous solution at a pH of from 1.5 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 27; separating the solution thus formed from the aqueous raffinate depleted in said zinc values; and recovering said zinc values from said separated solution by acid stripping.
Claim 35
Dependent Claim
90 words
A process for recovering zinc values from an aqueous solution comprising zinc values and nickel values, said process comprising contacting said aqueous solution at a pH of from 1.5 to about 2.0 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of about 27; separating the solution thus formed from the aqueous raffinate depleted in said zinc values; and recovering said zinc values from said separated solution by acid stripping.
Claim 36
Dependent Claim
90 words
A process for recovering zinc values from an aqueous solution comprising zinc values and iron values, said process comprising contacting said aqueous solution at a pH of from 1.0 to 2.3 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 15 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said zinc values from said separated solution by acid stripping.
Claim 37
Dependent Claim
90 words
A process for recovering zinc values from an aqueous solution comprising zinc values and iron values, said process comprising contacting said aqueous solution at a pH of from 1.0 to 2.3 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) dinonylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 15 to 50; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said zinc values from said separated solution by acid stripping.
Claim 38
Dependent Claim
88 words
A process for recovering copper values from an aqueous solution comprising copper values and iron values, said process comprising contacting said aqueous solution at a pH of about 1.6 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) didodecylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 10 to 70; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
Claim 39
Dependent Claim
88 words
A process for recovering copper values from an aqueous solution comprising copper values and iron values, said process comprising contacting said aqueous solution at a pH of about 1.6 with a solvent-extractant consisting of (i) 5,8-diethyl-7-hydroxydodecan-6-one oxime, (ii) didodecylnaphthalene sulfonic acid and (iii) kerosene, the mole % of (ii) in combined (i) and (ii) being in the range of 10 to 70; separating the solution thus formed from the aqueous raffinate depleted in said copper values; and recovering said copper values from said separated solution by acid stripping.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |