US3572504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the flotation of oxidic ores with calcareous and dolomitic gangue
Assignee: AUBY PROD CHIM
•
Filing: 1969-10-21
•
Granted: 1971-03-30
•
Expires: 1989-10-21
Abstract
Abstract A method for the flotation of minerals and ores with a calcareous and dolomitic gangue, such as oxidized ores, especially of copper, in which there are incorporated in the flotation pulps, when so required, together with modifying reagents acting on the minerals to be collected, modifying products acting on the gangues, especially on calcareous and dolomitic gangues, the said gangue-modifying products being preferably agents selected from the group comprising the polymers of acrylic acid, their derivatives and their equivalents which are soluble in water.
Inventors
- 👤 Jacques A Decuyper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:08
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D1/012; B03D2201/00; B03D2201/007; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; Y; Y10; Y10S; Y10S209/00; Y10S209/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
Method according to claim 1 which the material being treated is the residue from a primary flotation of a copper ore.
Claim 2
Dependent Claim
15 words
Method according to claim 1 in which the material being treated is a lead-bearing waste.
Claim 3
Dependent Claim
13 words
Method according to claim 1 in which the ore is an oxidized ore.
Claim 4
Dependent Claim
20 words
Method according to claim 4 in which the gangue is dolomitic and sulfurating agent is present in the flotation medium.
Claim 5
Dependent Claim
13 words
Method according to claim 5 in which the ore is a copper ore.
Claim 6
Dependent Claim
23 words
Method according to claim 4 in which the ore is a lead ore and a sulfurating agent is present in the flotation medium.
References Cited (Backward Citations)
US1312668A
Cited
GB378063A
Cited
US2740522A
Cited
US2980609A
Cited
US2955932A
Cited
SU141827A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |