Patent US4280839A successfully refreshed from Google Patents.
US4280839A
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US
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Recovery of metal values from a metal bearing source of nickel and vanadium
Assignee: Honeywell UOP LLC
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Filing: 1979-11-01
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Granted: 1981-07-28
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Expires: 1999-11-01
Abstract
Abstract Metal values may be recovered from metal bearing sources which contain at least two metals, at least one of which is in the form of a sulfide, by treating the aforesaid source with an oxidant at an elevated temperature in the range of from about 600° to about 1500° C. and in the presence of an added promoter comprising a sulfur-containing compound. The treatment will convert at least one metal value to an oxide and at least one metal value is converted to the elemental state which contains a relatively minor amount of a subsulfide. The addition of the sulfur-containing compound will result in an increase in the particle size of the elemental metal, thus permitting the recovery of said metal more readily.
Inventors
- 👤 William K. Tolley
- 👤 William C. Laughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:48
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/20; C22B34/22; C22B23/00; C22B23/005; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
A process for the recovery of both nickel and vanadium values from a source containing said metal wherein at least one of said nickel or vanadium is present in the form of a sulfide, which process comprises concomitantly treating said source at a temperature in the range of from about 600° C. to about 1500° C. with both (1) an oxidant selected from the group consisting of carbon dioxide and water and (2) a sulfur-containing compound to convert said vanadium to an oxide form and said nickel to a nickel-nickel subsulfide form, wherein said nickel-nickel subsulfide is physically larger than said vanadium oxide and wherein said vanadium oxide is separated from said nickel-nickel subsulfide by means of said difference in size of said nickel-nickel subsulfide and said vanadium oxide.
Claim 2
Dependent Claim
129 words
A process for the recovery of both nickel and vanadium values from a source containing said metal wherein at least one of said nickel or vanadium is present in the form of a sulfide, which process comprises concomitantly treating said source at a temperature in the range of from about 600° C. to about 1500° C. with both (1) an oxidant selected from the group consisting of carbon dioxide and water and (2) a sulfur-containing compound to convert said vanadium to an oxide form and said nickel to a nickel-nickel subsulfide form, wherein said nickel-nickel subsulfide is physically larger than said vanadium oxide and wherein said vanadium oxide is separated from said nickel-nickel subsulfide by means of said difference in size of said nickel-nickel subsulfide and said vanadium oxide.
Claim 3
Dependent Claim
15 words
The process as set forth in claim 1 in which said oxidant is carbon dioxide.
Claim 4
Dependent Claim
14 words
The process as set forth in claim 1 in which said oxidant is water.
Claim 5
Dependent Claim
16 words
The process as set forth in claim 1 in which said sulfur-containing compound is sulfur dioxide.
Claim 6
Dependent Claim
16 words
The process as set forth in claim 1 in which said sulfur-containing compound is elemental sulfur.
Claim 7
Dependent Claim
25 words
The process as set forth in claim 1 in which said separation of said nickel-nickel subsulfide from said vanadium oxide is effected by magnetic separation.
Claim 8
Dependent Claim
24 words
The process as set forth in claim 1 in which said separation of said nickel-nickel subsulfide from said vanadium oxide is effected by flotation.
Claim 9
Dependent Claim
24 words
The process as set forth in claim 1 in which said separation of said nickel-nickel subsulfide from said vanadium oxide is effected by elution.
References Cited (Backward Citations)
US4163709A
Cited
US4203759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |