Direct smelting or zinc concentrates and residues
US5443614A · kind A · utility
1Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jul 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is concerned with a process for the direct smelting of zinc containing materials. The process includes volatilizing zinc from zinc-containing materials into a gas phase, while sulphur is fixed as iron sulphide in a Fe-S-O matte. Thereafter, zinc is recovered in metallic form with a suitable condenser apparatus from a zinc laden gas consisting of Zn(g), CO, CO.sub.2 and N.sub.2. Other metals like silver, cadmium, mercury and lead may also be recovered in this manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.