Process for treating precious metal ores
US6270555A · kind A · utility
6Cited by
13References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jul 28, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B11/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention provides a method to control the off gas emission of sulfur dioxide from a mineral ore roaster by grinding a sulfur-containing mineral ore, adding sodium sesquicarbonate to the mineral ore, and roasting the ore and sodium sesquicarbonate at an elevated temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.