Patent JPS6318596A successfully refreshed from Google Patents.
Patent US2595076A successfully refreshed from Google Patents.
US2595076A
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Selective flotation of zinc
Assignee: Hudbay Minerals Inc
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Filing: 1949-09-19
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Granted: 1952-04-29
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Expires: 1969-09-19
Abstract
No abstract record available.
Inventors
- 👤 Luther G Hendrickson
- 👤 Percy L Dixon
- 👤 Burton E Lyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:40
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/08; B03D1/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR THE SEPARATION OF ZINC SULPHIDE MINERALS FROM PULPS CONTAINING SAID MINERALS AND OTHER METALLIC SULPHIDES AND NON-SULPHIDES COMPRISING: DE-ACTIVATING THE MINERAL PARTICLES IN THE PULP BY AERATION AT A TEMPERATURE OF FROM ABOUT 80* C. TO ABOUT 100* C. AND VIOLET AGITATION FOR AN EXTENDED PERIOD OF TIME; SELECTIVELY RE-ACTIVATING THE SULPHIDE MINERAL PARTICLES AT A TEMPERATURE OF FROM ABOUT 60* C. TO ABOUT 80* C. BY TREATMENT OF THE PULP WITH AN ALKALIZING AGENT WITH AERATION AND GENTLE AGITATION, AND ADDITION OF COPPER SULPHATE WITH GENTLE AGITATION; AND FLOATING THE ZINC SULPHIDE MINERALS UNDER CONDITIONS OF GENTLE AGITATION.
Claim 2
Dependent Claim
102 words
A PROCESS FOR THE SEPARATION OF ZINC SULPHIDE MINERALS FROM PULPS CONTAINING SAID MINERALS AND OTHER METALLIC SULPHIDES AND NON-SULPHIDES COMPRISING: DE-ACTIVATING THE MINERAL PARTICLES IN THE PULP BY AERATION AT A TEMPERATURE OF FROM ABOUT 80* C. TO ABOUT 100* C. AND VIOLET AGITATION FOR AN EXTENDED PERIOD OF TIME; SELECTIVELY RE-ACTIVATING THE SULPHIDE MINERAL PARTICLES AT A TEMPERATURE OF FROM ABOUT 60* C. TO ABOUT 80* C. BY TREATMENT OF THE PULP WITH AN ALKALIZING AGENT WITH AERATION AND GENTLE AGITATION, AND ADDITION OF COPPER SULPHATE WITH GENTLE AGITATION; AND FLOATING THE ZINC SULPHIDE MINERALS UNDER CONDITIONS OF GENTLE AGITATION.
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) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |