US4276083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of metal values from a metal bearing source of nickel and vanadium
Assignee: Honeywell UOP LLC
•
Filing: 1979-11-01
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Granted: 1981-06-30
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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 a mild oxidant at an elevated temperature in the range of from about 600° to about 1500° C. whereby at least one metal value is converted to an oxide and at least one metal value is converted to the elemental state which contains a relatively minor amount of sulfur. Thereafter the metal compounds may be separated and recovered by conventional means.
Inventors
- 👤 William K. Tolley
- 👤 William C. Laughlin
- 👤 William Rostoker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/005; C22B34/00; C22B34/20; C22B34/22; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
74 words
A process for the recovery of metal values from a metal bearing source containing nickel and vanadium, the nickel being in the form of a sulfide, which comprises treating said source with a mild oxidant selected from the group consisting of carbon dioxide, water, sulfur dioxide, and mixtures thereof at conditions to convert the nickel sulfide to metal and the vanadium to an oxide, and separating the resultant metallic nickel from the vanadium oxide.
Claim 2
Dependent Claim
74 words
A process for the recovery of metal values from a metal bearing source containing nickel and vanadium, the nickel being in the form of a sulfide, which comprises treating said source with a mild oxidant selected from the group consisting of carbon dioxide, water, sulfur dioxide, and mixtures thereof at conditions to convert the nickel sulfide to metal and the vanadium to an oxide, and separating the resultant metallic nickel from the vanadium oxide.
Claim 3
Dependent Claim
32 words
The process as set forth in claim 1 in which said treatment with said mild oxidant is effected at a temperature in the range of from about 600° to about 1500° C.
Claim 4
Dependent Claim
16 words
The process as set forth in claim 1 in which said mild oxidant is carbon dioxide.
Claim 5
Dependent Claim
15 words
The process as set forth in claim 1 in which said mild oxidant is water.
Claim 6
Dependent Claim
21 words
The process as set forth in claim 1 in which said metal bearing source comprises a hydrocarbon feed containing metal contaminants.
Claim 7
Dependent Claim
19 words
The process as set forth in claim 5 in which said metal contaminants comprise nickel sulfide and vanadium sulfide.
Claim 8
Dependent Claim
27 words
The process as set forth in claim 5 in which said nickel bearing source is treated to remove volatile substituents prior to treatment with said mild oxidant.
Claim 9
Dependent Claim
18 words
The process as set forth in claim 7 in which said volatile substituents are removed by solvent extraction.
Claim 10
Dependent Claim
19 words
The process as set forth in claim 7 in which said volatile substituents are removed by distillation and pyrolysis.
Claim 11
Dependent Claim
29 words
The process as set forth in claim 9 in which said pyrolysis is effected at a temperature in the range of from about 350° C. to about 550° C.
Claim 12
Dependent Claim
25 words
The process as set forth in claim 1 in which the separation of the metallic nickel from the vanadium oxide is effected by magnetic separation.
Claim 13
Dependent Claim
24 words
The process as set forth in claim 1 in which the separation of the metallic nickel from the vanadium oxide is effected by flotation.
Claim 14
Dependent Claim
24 words
The process as set forth in claim 1 in which the separation of the metallic nickel from the 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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |