Anionic acrylamide polymers as copper ore agglomeration aids
US4875935A · kind A · utility
36Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method for extracting copper from copper minerals by heap leaching with dilute sulfuric acid which comprises agglomerating the copper mineral fines prior to their being formed into an heap with an agglomerating agent comprising an anionic acrylamide polymer which contains at least 5 mole percent of carboxylate or sulfonate groups and has a molecular weight of least 100,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.