Compositions and methods for treatment of mine tailings
US11427487B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | May 9, 2019 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | May 9, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/16
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Compositions and methods for treating waste water produced by copper mining operations are described herein. Slag from steel making operations and other industrial waste materials that include alkali metal and/or alkaline earth elements have been found to both raise pH of the waste water and also reduce arsenic content. Following such treatment the spent slag or industrial waste can be utilized as a source of valuable metals or incorporated into stabilized building materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.